2009-10-28 09:59:56 +00:00
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/*
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* linux/drivers/video/omap2/dss/dsi.c
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*
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* Copyright (C) 2009 Nokia Corporation
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* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define DSS_SUBSYS_NAME "DSI"
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/clk.h>
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/mutex.h>
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2010-01-11 14:33:56 +00:00
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#include <linux/semaphore.h>
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2009-10-28 09:59:56 +00:00
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#include <linux/seq_file.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/consumer.h>
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#include <linux/wait.h>
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2010-01-12 12:16:41 +00:00
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#include <linux/workqueue.h>
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2010-07-28 12:53:38 +00:00
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#include <linux/sched.h>
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2011-05-12 11:56:27 +00:00
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#include <linux/slab.h>
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2011-05-12 11:56:29 +00:00
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#include <linux/debugfs.h>
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2011-05-27 07:52:19 +00:00
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#include <linux/pm_runtime.h>
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2009-10-28 09:59:56 +00:00
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2011-05-11 11:05:07 +00:00
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#include <video/omapdss.h>
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2009-10-28 09:59:56 +00:00
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#include <plat/clock.h>
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#include "dss.h"
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2011-03-01 06:24:00 +00:00
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#include "dss_features.h"
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2009-10-28 09:59:56 +00:00
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/*#define VERBOSE_IRQ*/
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#define DSI_CATCH_MISSING_TE
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struct dsi_reg { u16 idx; };
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#define DSI_REG(idx) ((const struct dsi_reg) { idx })
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#define DSI_SZ_REGS SZ_1K
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/* DSI Protocol Engine */
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#define DSI_REVISION DSI_REG(0x0000)
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#define DSI_SYSCONFIG DSI_REG(0x0010)
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#define DSI_SYSSTATUS DSI_REG(0x0014)
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#define DSI_IRQSTATUS DSI_REG(0x0018)
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#define DSI_IRQENABLE DSI_REG(0x001C)
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#define DSI_CTRL DSI_REG(0x0040)
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2011-05-16 09:47:08 +00:00
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#define DSI_GNQ DSI_REG(0x0044)
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2009-10-28 09:59:56 +00:00
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#define DSI_COMPLEXIO_CFG1 DSI_REG(0x0048)
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#define DSI_COMPLEXIO_IRQ_STATUS DSI_REG(0x004C)
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#define DSI_COMPLEXIO_IRQ_ENABLE DSI_REG(0x0050)
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#define DSI_CLK_CTRL DSI_REG(0x0054)
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#define DSI_TIMING1 DSI_REG(0x0058)
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#define DSI_TIMING2 DSI_REG(0x005C)
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#define DSI_VM_TIMING1 DSI_REG(0x0060)
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#define DSI_VM_TIMING2 DSI_REG(0x0064)
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#define DSI_VM_TIMING3 DSI_REG(0x0068)
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#define DSI_CLK_TIMING DSI_REG(0x006C)
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#define DSI_TX_FIFO_VC_SIZE DSI_REG(0x0070)
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#define DSI_RX_FIFO_VC_SIZE DSI_REG(0x0074)
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#define DSI_COMPLEXIO_CFG2 DSI_REG(0x0078)
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#define DSI_RX_FIFO_VC_FULLNESS DSI_REG(0x007C)
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#define DSI_VM_TIMING4 DSI_REG(0x0080)
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#define DSI_TX_FIFO_VC_EMPTINESS DSI_REG(0x0084)
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#define DSI_VM_TIMING5 DSI_REG(0x0088)
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#define DSI_VM_TIMING6 DSI_REG(0x008C)
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#define DSI_VM_TIMING7 DSI_REG(0x0090)
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#define DSI_STOPCLK_TIMING DSI_REG(0x0094)
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#define DSI_VC_CTRL(n) DSI_REG(0x0100 + (n * 0x20))
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#define DSI_VC_TE(n) DSI_REG(0x0104 + (n * 0x20))
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#define DSI_VC_LONG_PACKET_HEADER(n) DSI_REG(0x0108 + (n * 0x20))
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#define DSI_VC_LONG_PACKET_PAYLOAD(n) DSI_REG(0x010C + (n * 0x20))
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#define DSI_VC_SHORT_PACKET_HEADER(n) DSI_REG(0x0110 + (n * 0x20))
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#define DSI_VC_IRQSTATUS(n) DSI_REG(0x0118 + (n * 0x20))
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#define DSI_VC_IRQENABLE(n) DSI_REG(0x011C + (n * 0x20))
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/* DSIPHY_SCP */
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#define DSI_DSIPHY_CFG0 DSI_REG(0x200 + 0x0000)
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#define DSI_DSIPHY_CFG1 DSI_REG(0x200 + 0x0004)
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#define DSI_DSIPHY_CFG2 DSI_REG(0x200 + 0x0008)
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#define DSI_DSIPHY_CFG5 DSI_REG(0x200 + 0x0014)
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2010-07-27 08:11:48 +00:00
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#define DSI_DSIPHY_CFG10 DSI_REG(0x200 + 0x0028)
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2009-10-28 09:59:56 +00:00
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/* DSI_PLL_CTRL_SCP */
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#define DSI_PLL_CONTROL DSI_REG(0x300 + 0x0000)
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#define DSI_PLL_STATUS DSI_REG(0x300 + 0x0004)
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#define DSI_PLL_GO DSI_REG(0x300 + 0x0008)
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#define DSI_PLL_CONFIGURATION1 DSI_REG(0x300 + 0x000C)
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#define DSI_PLL_CONFIGURATION2 DSI_REG(0x300 + 0x0010)
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2011-05-12 11:56:26 +00:00
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#define REG_GET(dsidev, idx, start, end) \
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FLD_GET(dsi_read_reg(dsidev, idx), start, end)
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2009-10-28 09:59:56 +00:00
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2011-05-12 11:56:26 +00:00
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#define REG_FLD_MOD(dsidev, idx, val, start, end) \
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dsi_write_reg(dsidev, idx, FLD_MOD(dsi_read_reg(dsidev, idx), val, start, end))
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2009-10-28 09:59:56 +00:00
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/* Global interrupts */
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#define DSI_IRQ_VC0 (1 << 0)
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#define DSI_IRQ_VC1 (1 << 1)
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#define DSI_IRQ_VC2 (1 << 2)
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#define DSI_IRQ_VC3 (1 << 3)
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#define DSI_IRQ_WAKEUP (1 << 4)
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#define DSI_IRQ_RESYNC (1 << 5)
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#define DSI_IRQ_PLL_LOCK (1 << 7)
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#define DSI_IRQ_PLL_UNLOCK (1 << 8)
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#define DSI_IRQ_PLL_RECALL (1 << 9)
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#define DSI_IRQ_COMPLEXIO_ERR (1 << 10)
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#define DSI_IRQ_HS_TX_TIMEOUT (1 << 14)
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#define DSI_IRQ_LP_RX_TIMEOUT (1 << 15)
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#define DSI_IRQ_TE_TRIGGER (1 << 16)
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#define DSI_IRQ_ACK_TRIGGER (1 << 17)
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#define DSI_IRQ_SYNC_LOST (1 << 18)
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#define DSI_IRQ_LDO_POWER_GOOD (1 << 19)
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#define DSI_IRQ_TA_TIMEOUT (1 << 20)
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#define DSI_IRQ_ERROR_MASK \
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(DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \
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DSI_IRQ_TA_TIMEOUT)
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#define DSI_IRQ_CHANNEL_MASK 0xf
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/* Virtual channel interrupts */
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#define DSI_VC_IRQ_CS (1 << 0)
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#define DSI_VC_IRQ_ECC_CORR (1 << 1)
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#define DSI_VC_IRQ_PACKET_SENT (1 << 2)
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#define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3)
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#define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4)
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#define DSI_VC_IRQ_BTA (1 << 5)
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#define DSI_VC_IRQ_ECC_NO_CORR (1 << 6)
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#define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7)
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#define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8)
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#define DSI_VC_IRQ_ERROR_MASK \
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(DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \
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DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \
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DSI_VC_IRQ_FIFO_TX_UDF)
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/* ComplexIO interrupts */
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#define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0)
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#define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1)
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#define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2)
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2011-03-24 14:30:17 +00:00
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#define DSI_CIO_IRQ_ERRSYNCESC4 (1 << 3)
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#define DSI_CIO_IRQ_ERRSYNCESC5 (1 << 4)
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2009-10-28 09:59:56 +00:00
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#define DSI_CIO_IRQ_ERRESC1 (1 << 5)
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#define DSI_CIO_IRQ_ERRESC2 (1 << 6)
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#define DSI_CIO_IRQ_ERRESC3 (1 << 7)
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2011-03-24 14:30:17 +00:00
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#define DSI_CIO_IRQ_ERRESC4 (1 << 8)
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#define DSI_CIO_IRQ_ERRESC5 (1 << 9)
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2009-10-28 09:59:56 +00:00
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#define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10)
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#define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11)
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#define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12)
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2011-03-24 14:30:17 +00:00
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#define DSI_CIO_IRQ_ERRCONTROL4 (1 << 13)
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#define DSI_CIO_IRQ_ERRCONTROL5 (1 << 14)
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2009-10-28 09:59:56 +00:00
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#define DSI_CIO_IRQ_STATEULPS1 (1 << 15)
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#define DSI_CIO_IRQ_STATEULPS2 (1 << 16)
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#define DSI_CIO_IRQ_STATEULPS3 (1 << 17)
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2011-03-24 14:30:17 +00:00
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#define DSI_CIO_IRQ_STATEULPS4 (1 << 18)
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#define DSI_CIO_IRQ_STATEULPS5 (1 << 19)
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2009-10-28 09:59:56 +00:00
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#define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20)
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#define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21)
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#define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22)
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#define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23)
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#define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24)
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#define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25)
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2011-03-24 14:30:17 +00:00
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#define DSI_CIO_IRQ_ERRCONTENTIONLP0_4 (1 << 26)
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#define DSI_CIO_IRQ_ERRCONTENTIONLP1_4 (1 << 27)
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#define DSI_CIO_IRQ_ERRCONTENTIONLP0_5 (1 << 28)
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#define DSI_CIO_IRQ_ERRCONTENTIONLP1_5 (1 << 29)
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2009-10-28 09:59:56 +00:00
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#define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30)
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#define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31)
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2010-05-10 11:35:33 +00:00
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#define DSI_CIO_IRQ_ERROR_MASK \
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(DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \
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2011-03-24 14:30:17 +00:00
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DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRSYNCESC4 | \
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DSI_CIO_IRQ_ERRSYNCESC5 | \
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DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \
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DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRESC4 | \
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DSI_CIO_IRQ_ERRESC5 | \
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DSI_CIO_IRQ_ERRCONTROL1 | DSI_CIO_IRQ_ERRCONTROL2 | \
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DSI_CIO_IRQ_ERRCONTROL3 | DSI_CIO_IRQ_ERRCONTROL4 | \
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DSI_CIO_IRQ_ERRCONTROL5 | \
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2010-05-10 11:35:33 +00:00
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DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \
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DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \
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2011-03-24 14:30:17 +00:00
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DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3 | \
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DSI_CIO_IRQ_ERRCONTENTIONLP0_4 | DSI_CIO_IRQ_ERRCONTENTIONLP1_4 | \
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DSI_CIO_IRQ_ERRCONTENTIONLP0_5 | DSI_CIO_IRQ_ERRCONTENTIONLP1_5)
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2009-10-28 09:59:56 +00:00
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#define DSI_DT_DCS_SHORT_WRITE_0 0x05
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#define DSI_DT_DCS_SHORT_WRITE_1 0x15
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#define DSI_DT_DCS_READ 0x06
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#define DSI_DT_SET_MAX_RET_PKG_SIZE 0x37
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#define DSI_DT_NULL_PACKET 0x09
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#define DSI_DT_DCS_LONG_WRITE 0x39
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#define DSI_DT_RX_ACK_WITH_ERR 0x02
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#define DSI_DT_RX_DCS_LONG_READ 0x1c
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#define DSI_DT_RX_SHORT_READ_1 0x21
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#define DSI_DT_RX_SHORT_READ_2 0x22
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2011-03-02 12:47:04 +00:00
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typedef void (*omap_dsi_isr_t) (void *arg, u32 mask);
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#define DSI_MAX_NR_ISRS 2
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struct dsi_isr_data {
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omap_dsi_isr_t isr;
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void *arg;
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u32 mask;
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};
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2009-10-28 09:59:56 +00:00
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enum fifo_size {
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DSI_FIFO_SIZE_0 = 0,
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DSI_FIFO_SIZE_32 = 1,
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DSI_FIFO_SIZE_64 = 2,
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DSI_FIFO_SIZE_96 = 3,
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DSI_FIFO_SIZE_128 = 4,
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};
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enum dsi_vc_mode {
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DSI_VC_MODE_L4 = 0,
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DSI_VC_MODE_VP,
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};
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2010-07-27 08:11:48 +00:00
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enum dsi_lane {
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DSI_CLK_P = 1 << 0,
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DSI_CLK_N = 1 << 1,
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DSI_DATA1_P = 1 << 2,
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DSI_DATA1_N = 1 << 3,
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DSI_DATA2_P = 1 << 4,
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DSI_DATA2_N = 1 << 5,
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2011-05-16 09:47:08 +00:00
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DSI_DATA3_P = 1 << 6,
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DSI_DATA3_N = 1 << 7,
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DSI_DATA4_P = 1 << 8,
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DSI_DATA4_N = 1 << 9,
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2010-07-27 08:11:48 +00:00
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};
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2009-10-28 09:59:56 +00:00
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struct dsi_update_region {
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u16 x, y, w, h;
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struct omap_dss_device *device;
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};
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2009-12-17 12:35:21 +00:00
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struct dsi_irq_stats {
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unsigned long last_reset;
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unsigned irq_count;
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unsigned dsi_irqs[32];
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unsigned vc_irqs[4][32];
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unsigned cio_irqs[32];
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};
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2011-03-02 12:47:04 +00:00
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struct dsi_isr_tables {
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struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS];
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struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS];
|
|
|
|
struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS];
|
|
|
|
};
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data {
|
2011-01-24 06:22:02 +00:00
|
|
|
struct platform_device *pdev;
|
2009-10-28 09:59:56 +00:00
|
|
|
void __iomem *base;
|
2011-05-27 07:52:19 +00:00
|
|
|
|
2011-02-23 08:41:03 +00:00
|
|
|
int irq;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
struct clk *dss_clk;
|
|
|
|
struct clk *sys_clk;
|
|
|
|
|
2010-07-30 08:57:57 +00:00
|
|
|
void (*dsi_mux_pads)(bool enable);
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
struct dsi_clock_info current_cinfo;
|
|
|
|
|
2010-07-30 09:39:34 +00:00
|
|
|
bool vdds_dsi_enabled;
|
2009-10-28 09:59:56 +00:00
|
|
|
struct regulator *vdds_dsi_reg;
|
|
|
|
|
|
|
|
struct {
|
|
|
|
enum dsi_vc_mode mode;
|
|
|
|
struct omap_dss_device *dssdev;
|
|
|
|
enum fifo_size fifo_size;
|
2011-03-02 07:05:53 +00:00
|
|
|
int vc_id;
|
2009-10-28 09:59:56 +00:00
|
|
|
} vc[4];
|
|
|
|
|
|
|
|
struct mutex lock;
|
2010-01-11 14:33:56 +00:00
|
|
|
struct semaphore bus_lock;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
unsigned pll_locked;
|
|
|
|
|
2011-03-02 12:47:04 +00:00
|
|
|
spinlock_t irq_lock;
|
|
|
|
struct dsi_isr_tables isr_tables;
|
|
|
|
/* space for a copy used by the interrupt handler */
|
|
|
|
struct dsi_isr_tables isr_tables_copy;
|
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
int update_channel;
|
2009-10-28 09:59:56 +00:00
|
|
|
struct dsi_update_region update_region;
|
|
|
|
|
|
|
|
bool te_enabled;
|
2010-07-28 12:53:38 +00:00
|
|
|
bool ulps_enabled;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
void (*framedone_callback)(int, void *);
|
|
|
|
void *framedone_data;
|
|
|
|
|
|
|
|
struct delayed_work framedone_timeout_work;
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
#ifdef DSI_CATCH_MISSING_TE
|
|
|
|
struct timer_list te_timer;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
unsigned long cache_req_pck;
|
|
|
|
unsigned long cache_clk_freq;
|
|
|
|
struct dsi_clock_info cache_cinfo;
|
|
|
|
|
|
|
|
u32 errors;
|
|
|
|
spinlock_t errors_lock;
|
|
|
|
#ifdef DEBUG
|
|
|
|
ktime_t perf_setup_time;
|
|
|
|
ktime_t perf_start_time;
|
|
|
|
#endif
|
|
|
|
int debug_read;
|
|
|
|
int debug_write;
|
2009-12-17 12:35:21 +00:00
|
|
|
|
|
|
|
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
|
|
|
|
spinlock_t irq_stats_lock;
|
|
|
|
struct dsi_irq_stats irq_stats;
|
|
|
|
#endif
|
2011-03-15 04:28:23 +00:00
|
|
|
/* DSI PLL Parameter Ranges */
|
|
|
|
unsigned long regm_max, regn_max;
|
|
|
|
unsigned long regm_dispc_max, regm_dsi_max;
|
|
|
|
unsigned long fint_min, fint_max;
|
|
|
|
unsigned long lpdiv_max;
|
2011-04-13 14:12:52 +00:00
|
|
|
|
2011-05-16 09:47:08 +00:00
|
|
|
int num_data_lanes;
|
|
|
|
|
2011-04-13 14:12:52 +00:00
|
|
|
unsigned scp_clk_refcount;
|
2011-05-12 11:56:27 +00:00
|
|
|
};
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:28 +00:00
|
|
|
struct dsi_packet_sent_handler_data {
|
|
|
|
struct platform_device *dsidev;
|
|
|
|
struct completion *completion;
|
|
|
|
};
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static struct platform_device *dsi_pdev_map[MAX_NUM_DSI];
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
#ifdef DEBUG
|
|
|
|
static unsigned int dsi_perf;
|
|
|
|
module_param_named(dsi_perf, dsi_perf, bool, 0644);
|
|
|
|
#endif
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
static inline struct dsi_data *dsi_get_dsidrv_data(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
return dev_get_drvdata(&dsidev->dev);
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline struct platform_device *dsi_get_dsidev_from_dssdev(struct omap_dss_device *dssdev)
|
|
|
|
{
|
|
|
|
return dsi_pdev_map[dssdev->phy.dsi.module];
|
|
|
|
}
|
|
|
|
|
|
|
|
struct platform_device *dsi_get_dsidev_from_id(int module)
|
|
|
|
{
|
|
|
|
return dsi_pdev_map[module];
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
static int dsi_get_dsidev_id(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
/* TEMP: Pass 0 as the dsi module index till the time the dsi platform
|
|
|
|
* device names aren't changed to the form "omapdss_dsi.0",
|
|
|
|
* "omapdss_dsi.1" and so on */
|
|
|
|
BUG_ON(dsidev->id != -1);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline void dsi_write_reg(struct platform_device *dsidev,
|
|
|
|
const struct dsi_reg idx, u32 val)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
__raw_writel(val, dsi->base + idx.idx);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline u32 dsi_read_reg(struct platform_device *dsidev,
|
|
|
|
const struct dsi_reg idx)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
return __raw_readl(dsi->base + idx.idx);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
void dsi_bus_lock(struct omap_dss_device *dssdev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
down(&dsi->bus_lock);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_bus_lock);
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
void dsi_bus_unlock(struct omap_dss_device *dssdev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
up(&dsi->bus_lock);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_bus_unlock);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static bool dsi_bus_is_locked(struct platform_device *dsidev)
|
2010-01-18 14:27:52 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
return dsi->bus_lock.count == 0;
|
2010-01-18 14:27:52 +00:00
|
|
|
}
|
|
|
|
|
2011-03-02 12:48:41 +00:00
|
|
|
static void dsi_completion_handler(void *data, u32 mask)
|
|
|
|
{
|
|
|
|
complete((struct completion *)data);
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline int wait_for_bit_change(struct platform_device *dsidev,
|
|
|
|
const struct dsi_reg idx, int bitnum, int value)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
int t = 100000;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
while (REG_GET(dsidev, idx, bitnum, bitnum) != value) {
|
2009-10-28 09:59:56 +00:00
|
|
|
if (--t == 0)
|
|
|
|
return !value;
|
|
|
|
}
|
|
|
|
|
|
|
|
return value;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_perf_mark_setup(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
dsi->perf_setup_time = ktime_get();
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_perf_mark_start(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
dsi->perf_start_time = ktime_get();
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_perf_show(struct platform_device *dsidev, const char *name)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
ktime_t t, setup_time, trans_time;
|
|
|
|
u32 total_bytes;
|
|
|
|
u32 setup_us, trans_us, total_us;
|
|
|
|
|
|
|
|
if (!dsi_perf)
|
|
|
|
return;
|
|
|
|
|
|
|
|
t = ktime_get();
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
setup_time = ktime_sub(dsi->perf_start_time, dsi->perf_setup_time);
|
2009-10-28 09:59:56 +00:00
|
|
|
setup_us = (u32)ktime_to_us(setup_time);
|
|
|
|
if (setup_us == 0)
|
|
|
|
setup_us = 1;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
trans_time = ktime_sub(t, dsi->perf_start_time);
|
2009-10-28 09:59:56 +00:00
|
|
|
trans_us = (u32)ktime_to_us(trans_time);
|
|
|
|
if (trans_us == 0)
|
|
|
|
trans_us = 1;
|
|
|
|
|
|
|
|
total_us = setup_us + trans_us;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
total_bytes = dsi->update_region.w *
|
|
|
|
dsi->update_region.h *
|
|
|
|
dsi->update_region.device->ctrl.pixel_size / 8;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-11 14:41:10 +00:00
|
|
|
printk(KERN_INFO "DSI(%s): %u us + %u us = %u us (%uHz), "
|
|
|
|
"%u bytes, %u kbytes/sec\n",
|
|
|
|
name,
|
|
|
|
setup_us,
|
|
|
|
trans_us,
|
|
|
|
total_us,
|
|
|
|
1000*1000 / total_us,
|
|
|
|
total_bytes,
|
|
|
|
total_bytes * 1000 / total_us);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
#else
|
2011-05-23 13:36:09 +00:00
|
|
|
static inline void dsi_perf_mark_setup(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void dsi_perf_mark_start(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void dsi_perf_show(struct platform_device *dsidev,
|
|
|
|
const char *name)
|
|
|
|
{
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
static void print_irq_status(u32 status)
|
|
|
|
{
|
2011-03-02 13:53:07 +00:00
|
|
|
if (status == 0)
|
|
|
|
return;
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
#ifndef VERBOSE_IRQ
|
|
|
|
if ((status & ~DSI_IRQ_CHANNEL_MASK) == 0)
|
|
|
|
return;
|
|
|
|
#endif
|
|
|
|
printk(KERN_DEBUG "DSI IRQ: 0x%x: ", status);
|
|
|
|
|
|
|
|
#define PIS(x) \
|
|
|
|
if (status & DSI_IRQ_##x) \
|
|
|
|
printk(#x " ");
|
|
|
|
#ifdef VERBOSE_IRQ
|
|
|
|
PIS(VC0);
|
|
|
|
PIS(VC1);
|
|
|
|
PIS(VC2);
|
|
|
|
PIS(VC3);
|
|
|
|
#endif
|
|
|
|
PIS(WAKEUP);
|
|
|
|
PIS(RESYNC);
|
|
|
|
PIS(PLL_LOCK);
|
|
|
|
PIS(PLL_UNLOCK);
|
|
|
|
PIS(PLL_RECALL);
|
|
|
|
PIS(COMPLEXIO_ERR);
|
|
|
|
PIS(HS_TX_TIMEOUT);
|
|
|
|
PIS(LP_RX_TIMEOUT);
|
|
|
|
PIS(TE_TRIGGER);
|
|
|
|
PIS(ACK_TRIGGER);
|
|
|
|
PIS(SYNC_LOST);
|
|
|
|
PIS(LDO_POWER_GOOD);
|
|
|
|
PIS(TA_TIMEOUT);
|
|
|
|
#undef PIS
|
|
|
|
|
|
|
|
printk("\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_irq_status_vc(int channel, u32 status)
|
|
|
|
{
|
2011-03-02 13:53:07 +00:00
|
|
|
if (status == 0)
|
|
|
|
return;
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
#ifndef VERBOSE_IRQ
|
|
|
|
if ((status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
|
|
|
|
return;
|
|
|
|
#endif
|
|
|
|
printk(KERN_DEBUG "DSI VC(%d) IRQ 0x%x: ", channel, status);
|
|
|
|
|
|
|
|
#define PIS(x) \
|
|
|
|
if (status & DSI_VC_IRQ_##x) \
|
|
|
|
printk(#x " ");
|
|
|
|
PIS(CS);
|
|
|
|
PIS(ECC_CORR);
|
|
|
|
#ifdef VERBOSE_IRQ
|
|
|
|
PIS(PACKET_SENT);
|
|
|
|
#endif
|
|
|
|
PIS(FIFO_TX_OVF);
|
|
|
|
PIS(FIFO_RX_OVF);
|
|
|
|
PIS(BTA);
|
|
|
|
PIS(ECC_NO_CORR);
|
|
|
|
PIS(FIFO_TX_UDF);
|
|
|
|
PIS(PP_BUSY_CHANGE);
|
|
|
|
#undef PIS
|
|
|
|
printk("\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_irq_status_cio(u32 status)
|
|
|
|
{
|
2011-03-02 13:53:07 +00:00
|
|
|
if (status == 0)
|
|
|
|
return;
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
printk(KERN_DEBUG "DSI CIO IRQ 0x%x: ", status);
|
|
|
|
|
|
|
|
#define PIS(x) \
|
|
|
|
if (status & DSI_CIO_IRQ_##x) \
|
|
|
|
printk(#x " ");
|
|
|
|
PIS(ERRSYNCESC1);
|
|
|
|
PIS(ERRSYNCESC2);
|
|
|
|
PIS(ERRSYNCESC3);
|
|
|
|
PIS(ERRESC1);
|
|
|
|
PIS(ERRESC2);
|
|
|
|
PIS(ERRESC3);
|
|
|
|
PIS(ERRCONTROL1);
|
|
|
|
PIS(ERRCONTROL2);
|
|
|
|
PIS(ERRCONTROL3);
|
|
|
|
PIS(STATEULPS1);
|
|
|
|
PIS(STATEULPS2);
|
|
|
|
PIS(STATEULPS3);
|
|
|
|
PIS(ERRCONTENTIONLP0_1);
|
|
|
|
PIS(ERRCONTENTIONLP1_1);
|
|
|
|
PIS(ERRCONTENTIONLP0_2);
|
|
|
|
PIS(ERRCONTENTIONLP1_2);
|
|
|
|
PIS(ERRCONTENTIONLP0_3);
|
|
|
|
PIS(ERRCONTENTIONLP1_3);
|
|
|
|
PIS(ULPSACTIVENOT_ALL0);
|
|
|
|
PIS(ULPSACTIVENOT_ALL1);
|
|
|
|
#undef PIS
|
|
|
|
|
|
|
|
printk("\n");
|
|
|
|
}
|
|
|
|
|
2011-03-02 12:44:27 +00:00
|
|
|
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_collect_irq_stats(struct platform_device *dsidev, u32 irqstatus,
|
|
|
|
u32 *vcstatus, u32 ciostatus)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int i;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock(&dsi->irq_stats_lock);
|
2011-03-02 12:44:27 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->irq_stats.irq_count++;
|
|
|
|
dss_collect_irq_stats(irqstatus, dsi->irq_stats.dsi_irqs);
|
2011-03-02 12:44:27 +00:00
|
|
|
|
|
|
|
for (i = 0; i < 4; ++i)
|
2011-05-12 11:56:27 +00:00
|
|
|
dss_collect_irq_stats(vcstatus[i], dsi->irq_stats.vc_irqs[i]);
|
2011-03-02 12:44:27 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dss_collect_irq_stats(ciostatus, dsi->irq_stats.cio_irqs);
|
2011-03-02 12:44:27 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock(&dsi->irq_stats_lock);
|
2011-03-02 12:44:27 +00:00
|
|
|
}
|
|
|
|
#else
|
2011-05-12 11:56:26 +00:00
|
|
|
#define dsi_collect_irq_stats(dsidev, irqstatus, vcstatus, ciostatus)
|
2009-12-17 12:35:21 +00:00
|
|
|
#endif
|
|
|
|
|
2011-03-02 12:44:27 +00:00
|
|
|
static int debug_irq;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_handle_irq_errors(struct platform_device *dsidev, u32 irqstatus,
|
|
|
|
u32 *vcstatus, u32 ciostatus)
|
2011-03-02 12:44:27 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:44:27 +00:00
|
|
|
int i;
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
if (irqstatus & DSI_IRQ_ERROR_MASK) {
|
|
|
|
DSSERR("DSI error, irqstatus %x\n", irqstatus);
|
|
|
|
print_irq_status(irqstatus);
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock(&dsi->errors_lock);
|
|
|
|
dsi->errors |= irqstatus & DSI_IRQ_ERROR_MASK;
|
|
|
|
spin_unlock(&dsi->errors_lock);
|
2009-10-28 09:59:56 +00:00
|
|
|
} else if (debug_irq) {
|
|
|
|
print_irq_status(irqstatus);
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < 4; ++i) {
|
2011-03-02 12:44:27 +00:00
|
|
|
if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) {
|
|
|
|
DSSERR("DSI VC(%d) error, vc irqstatus %x\n",
|
|
|
|
i, vcstatus[i]);
|
|
|
|
print_irq_status_vc(i, vcstatus[i]);
|
|
|
|
} else if (debug_irq) {
|
|
|
|
print_irq_status_vc(i, vcstatus[i]);
|
|
|
|
}
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 12:44:27 +00:00
|
|
|
if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) {
|
|
|
|
DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus);
|
|
|
|
print_irq_status_cio(ciostatus);
|
|
|
|
} else if (debug_irq) {
|
|
|
|
print_irq_status_cio(ciostatus);
|
|
|
|
}
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 12:47:04 +00:00
|
|
|
static void dsi_call_isrs(struct dsi_isr_data *isr_array,
|
|
|
|
unsigned isr_array_size, u32 irqstatus)
|
|
|
|
{
|
|
|
|
struct dsi_isr_data *isr_data;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < isr_array_size; i++) {
|
|
|
|
isr_data = &isr_array[i];
|
|
|
|
if (isr_data->isr && isr_data->mask & irqstatus)
|
|
|
|
isr_data->isr(isr_data->arg, irqstatus);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables,
|
|
|
|
u32 irqstatus, u32 *vcstatus, u32 ciostatus)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
dsi_call_isrs(isr_tables->isr_table,
|
|
|
|
ARRAY_SIZE(isr_tables->isr_table),
|
|
|
|
irqstatus);
|
|
|
|
|
|
|
|
for (i = 0; i < 4; ++i) {
|
|
|
|
if (vcstatus[i] == 0)
|
|
|
|
continue;
|
|
|
|
dsi_call_isrs(isr_tables->isr_table_vc[i],
|
|
|
|
ARRAY_SIZE(isr_tables->isr_table_vc[i]),
|
|
|
|
vcstatus[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ciostatus != 0)
|
|
|
|
dsi_call_isrs(isr_tables->isr_table_cio,
|
|
|
|
ARRAY_SIZE(isr_tables->isr_table_cio),
|
|
|
|
ciostatus);
|
|
|
|
}
|
|
|
|
|
2011-03-02 12:44:27 +00:00
|
|
|
static irqreturn_t omap_dsi_irq_handler(int irq, void *arg)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev;
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi;
|
2011-03-02 12:44:27 +00:00
|
|
|
u32 irqstatus, vcstatus[4], ciostatus;
|
|
|
|
int i;
|
2009-12-17 12:35:21 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsidev = (struct platform_device *) arg;
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi = dsi_get_dsidrv_data(dsidev);
|
2011-05-12 11:56:26 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock(&dsi->irq_lock);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
irqstatus = dsi_read_reg(dsidev, DSI_IRQSTATUS);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 12:44:27 +00:00
|
|
|
/* IRQ is not for us */
|
2011-03-02 12:47:04 +00:00
|
|
|
if (!irqstatus) {
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock(&dsi->irq_lock);
|
2011-03-02 12:44:27 +00:00
|
|
|
return IRQ_NONE;
|
2011-03-02 12:47:04 +00:00
|
|
|
}
|
2010-06-09 12:31:01 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK);
|
2011-03-02 12:44:27 +00:00
|
|
|
/* flush posted write */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_read_reg(dsidev, DSI_IRQSTATUS);
|
2011-03-02 12:44:27 +00:00
|
|
|
|
|
|
|
for (i = 0; i < 4; ++i) {
|
|
|
|
if ((irqstatus & (1 << i)) == 0) {
|
|
|
|
vcstatus[i] = 0;
|
|
|
|
continue;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
vcstatus[i] = dsi_read_reg(dsidev, DSI_VC_IRQSTATUS(i));
|
2011-03-02 12:44:27 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VC_IRQSTATUS(i), vcstatus[i]);
|
2009-10-28 09:59:56 +00:00
|
|
|
/* flush posted write */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_read_reg(dsidev, DSI_VC_IRQSTATUS(i));
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) {
|
2011-05-12 11:56:26 +00:00
|
|
|
ciostatus = dsi_read_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS, ciostatus);
|
2009-10-28 09:59:56 +00:00
|
|
|
/* flush posted write */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_read_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS);
|
2011-03-02 12:44:27 +00:00
|
|
|
} else {
|
|
|
|
ciostatus = 0;
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 12:44:27 +00:00
|
|
|
#ifdef DSI_CATCH_MISSING_TE
|
|
|
|
if (irqstatus & DSI_IRQ_TE_TRIGGER)
|
2011-05-12 11:56:27 +00:00
|
|
|
del_timer(&dsi->te_timer);
|
2011-03-02 12:44:27 +00:00
|
|
|
#endif
|
|
|
|
|
2011-03-02 12:47:04 +00:00
|
|
|
/* make a copy and unlock, so that isrs can unregister
|
|
|
|
* themselves */
|
2011-05-12 11:56:27 +00:00
|
|
|
memcpy(&dsi->isr_tables_copy, &dsi->isr_tables,
|
|
|
|
sizeof(dsi->isr_tables));
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock(&dsi->irq_lock);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi_handle_isrs(&dsi->isr_tables_copy, irqstatus, vcstatus, ciostatus);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_handle_irq_errors(dsidev, irqstatus, vcstatus, ciostatus);
|
2011-03-02 12:44:27 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_collect_irq_stats(dsidev, irqstatus, vcstatus, ciostatus);
|
2009-12-17 12:35:21 +00:00
|
|
|
|
2011-02-23 08:41:03 +00:00
|
|
|
return IRQ_HANDLED;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
/* dsi->irq_lock has to be locked by the caller */
|
2011-05-12 11:56:26 +00:00
|
|
|
static void _omap_dsi_configure_irqs(struct platform_device *dsidev,
|
|
|
|
struct dsi_isr_data *isr_array,
|
2011-03-02 12:47:04 +00:00
|
|
|
unsigned isr_array_size, u32 default_mask,
|
|
|
|
const struct dsi_reg enable_reg,
|
|
|
|
const struct dsi_reg status_reg)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-03-02 12:47:04 +00:00
|
|
|
struct dsi_isr_data *isr_data;
|
|
|
|
u32 mask;
|
|
|
|
u32 old_mask;
|
2009-10-28 09:59:56 +00:00
|
|
|
int i;
|
|
|
|
|
2011-03-02 12:47:04 +00:00
|
|
|
mask = default_mask;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 12:47:04 +00:00
|
|
|
for (i = 0; i < isr_array_size; i++) {
|
|
|
|
isr_data = &isr_array[i];
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 12:47:04 +00:00
|
|
|
if (isr_data->isr == NULL)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
mask |= isr_data->mask;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
old_mask = dsi_read_reg(dsidev, enable_reg);
|
2011-03-02 12:47:04 +00:00
|
|
|
/* clear the irqstatus for newly enabled irqs */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, status_reg, (mask ^ old_mask) & mask);
|
|
|
|
dsi_write_reg(dsidev, enable_reg, mask);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
/* flush posted writes */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_read_reg(dsidev, enable_reg);
|
|
|
|
dsi_read_reg(dsidev, status_reg);
|
2011-03-02 12:47:04 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
/* dsi->irq_lock has to be locked by the caller */
|
2011-05-12 11:56:26 +00:00
|
|
|
static void _omap_dsi_set_irqs(struct platform_device *dsidev)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
u32 mask = DSI_IRQ_ERROR_MASK;
|
2009-10-28 09:59:56 +00:00
|
|
|
#ifdef DSI_CATCH_MISSING_TE
|
2011-03-02 12:47:04 +00:00
|
|
|
mask |= DSI_IRQ_TE_TRIGGER;
|
2009-10-28 09:59:56 +00:00
|
|
|
#endif
|
2011-05-12 11:56:27 +00:00
|
|
|
_omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table,
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table), mask,
|
2011-03-02 12:47:04 +00:00
|
|
|
DSI_IRQENABLE, DSI_IRQSTATUS);
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
/* dsi->irq_lock has to be locked by the caller */
|
2011-05-12 11:56:26 +00:00
|
|
|
static void _omap_dsi_set_irqs_vc(struct platform_device *dsidev, int vc)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
_omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table_vc[vc],
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table_vc[vc]),
|
2011-03-02 12:47:04 +00:00
|
|
|
DSI_VC_IRQ_ERROR_MASK,
|
|
|
|
DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc));
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
/* dsi->irq_lock has to be locked by the caller */
|
2011-05-12 11:56:26 +00:00
|
|
|
static void _omap_dsi_set_irqs_cio(struct platform_device *dsidev)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
_omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table_cio,
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table_cio),
|
2011-03-02 12:47:04 +00:00
|
|
|
DSI_CIO_IRQ_ERROR_MASK,
|
|
|
|
DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS);
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void _dsi_initialize_irq(struct platform_device *dsidev)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
unsigned long flags;
|
|
|
|
int vc;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
memset(&dsi->isr_tables, 0, sizeof(dsi->isr_tables));
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
_omap_dsi_set_irqs(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
for (vc = 0; vc < 4; ++vc)
|
2011-05-12 11:56:26 +00:00
|
|
|
_omap_dsi_set_irqs_vc(dsidev, vc);
|
|
|
|
_omap_dsi_set_irqs_cio(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock_irqrestore(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 12:47:04 +00:00
|
|
|
static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
|
|
|
|
struct dsi_isr_data *isr_array, unsigned isr_array_size)
|
|
|
|
{
|
|
|
|
struct dsi_isr_data *isr_data;
|
|
|
|
int free_idx;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
BUG_ON(isr == NULL);
|
|
|
|
|
|
|
|
/* check for duplicate entry and find a free slot */
|
|
|
|
free_idx = -1;
|
|
|
|
for (i = 0; i < isr_array_size; i++) {
|
|
|
|
isr_data = &isr_array[i];
|
|
|
|
|
|
|
|
if (isr_data->isr == isr && isr_data->arg == arg &&
|
|
|
|
isr_data->mask == mask) {
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (isr_data->isr == NULL && free_idx == -1)
|
|
|
|
free_idx = i;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (free_idx == -1)
|
|
|
|
return -EBUSY;
|
|
|
|
|
|
|
|
isr_data = &isr_array[free_idx];
|
|
|
|
isr_data->isr = isr;
|
|
|
|
isr_data->arg = arg;
|
|
|
|
isr_data->mask = mask;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
|
|
|
|
struct dsi_isr_data *isr_array, unsigned isr_array_size)
|
|
|
|
{
|
|
|
|
struct dsi_isr_data *isr_data;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < isr_array_size; i++) {
|
|
|
|
isr_data = &isr_array[i];
|
|
|
|
if (isr_data->isr != isr || isr_data->arg != arg ||
|
|
|
|
isr_data->mask != mask)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
isr_data->isr = NULL;
|
|
|
|
isr_data->arg = NULL;
|
|
|
|
isr_data->mask = 0;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_register_isr(struct platform_device *dsidev, omap_dsi_isr_t isr,
|
|
|
|
void *arg, u32 mask)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
unsigned long flags;
|
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table,
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table));
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
if (r == 0)
|
2011-05-12 11:56:26 +00:00
|
|
|
_omap_dsi_set_irqs(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock_irqrestore(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_unregister_isr(struct platform_device *dsidev,
|
|
|
|
omap_dsi_isr_t isr, void *arg, u32 mask)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
unsigned long flags;
|
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table,
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table));
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
if (r == 0)
|
2011-05-12 11:56:26 +00:00
|
|
|
_omap_dsi_set_irqs(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock_irqrestore(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_register_isr_vc(struct platform_device *dsidev, int channel,
|
|
|
|
omap_dsi_isr_t isr, void *arg, u32 mask)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
unsigned long flags;
|
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
r = _dsi_register_isr(isr, arg, mask,
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->isr_tables.isr_table_vc[channel],
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
if (r == 0)
|
2011-05-12 11:56:26 +00:00
|
|
|
_omap_dsi_set_irqs_vc(dsidev, channel);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock_irqrestore(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_unregister_isr_vc(struct platform_device *dsidev, int channel,
|
|
|
|
omap_dsi_isr_t isr, void *arg, u32 mask)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
unsigned long flags;
|
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
r = _dsi_unregister_isr(isr, arg, mask,
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->isr_tables.isr_table_vc[channel],
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
if (r == 0)
|
2011-05-12 11:56:26 +00:00
|
|
|
_omap_dsi_set_irqs_vc(dsidev, channel);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock_irqrestore(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_register_isr_cio(struct platform_device *dsidev,
|
|
|
|
omap_dsi_isr_t isr, void *arg, u32 mask)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
unsigned long flags;
|
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
if (r == 0)
|
2011-05-12 11:56:26 +00:00
|
|
|
_omap_dsi_set_irqs_cio(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock_irqrestore(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_unregister_isr_cio(struct platform_device *dsidev,
|
|
|
|
omap_dsi_isr_t isr, void *arg, u32 mask)
|
2011-03-02 12:47:04 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
unsigned long flags;
|
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
|
|
|
|
ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
if (r == 0)
|
2011-05-12 11:56:26 +00:00
|
|
|
_omap_dsi_set_irqs_cio(dsidev);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock_irqrestore(&dsi->irq_lock, flags);
|
2011-03-02 12:47:04 +00:00
|
|
|
|
|
|
|
return r;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static u32 dsi_get_errors(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
unsigned long flags;
|
|
|
|
u32 e;
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->errors_lock, flags);
|
|
|
|
e = dsi->errors;
|
|
|
|
dsi->errors = 0;
|
|
|
|
spin_unlock_irqrestore(&dsi->errors_lock, flags);
|
2009-10-28 09:59:56 +00:00
|
|
|
return e;
|
|
|
|
}
|
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
int dsi_runtime_get(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-27 07:52:19 +00:00
|
|
|
int r;
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
DSSDBG("dsi_runtime_get\n");
|
|
|
|
|
|
|
|
r = pm_runtime_get_sync(&dsi->pdev->dev);
|
|
|
|
WARN_ON(r < 0);
|
|
|
|
return r < 0 ? r : 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void dsi_runtime_put(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
int r;
|
|
|
|
|
|
|
|
DSSDBG("dsi_runtime_put\n");
|
|
|
|
|
|
|
|
r = pm_runtime_put(&dsi->pdev->dev);
|
|
|
|
WARN_ON(r < 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* source clock for DSI PLL. this could also be PCLKFREE */
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline void dsi_enable_pll_clock(struct platform_device *dsidev,
|
|
|
|
bool enable)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
if (enable)
|
2011-05-27 07:52:19 +00:00
|
|
|
clk_enable(dsi->sys_clk);
|
2009-10-28 09:59:56 +00:00
|
|
|
else
|
2011-05-27 07:52:19 +00:00
|
|
|
clk_disable(dsi->sys_clk);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (enable && dsi->pll_locked) {
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 1, 1) != 1)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("cannot lock PLL when enabling clocks\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
2011-05-12 11:56:26 +00:00
|
|
|
static void _dsi_print_reset_status(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
u32 l;
|
2010-10-07 10:27:42 +00:00
|
|
|
int b0, b1, b2;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
if (!dss_debug)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* A dummy read using the SCP interface to any DSIPHY register is
|
|
|
|
* required after DSIPHY reset to complete the reset of the DSI complex
|
|
|
|
* I/O. */
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_DSIPHY_CFG5);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
printk(KERN_DEBUG "DSI resets: ");
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_PLL_STATUS);
|
2009-10-28 09:59:56 +00:00
|
|
|
printk("PLL (%d) ", FLD_GET(l, 0, 0));
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG1);
|
2009-10-28 09:59:56 +00:00
|
|
|
printk("CIO (%d) ", FLD_GET(l, 29, 29));
|
|
|
|
|
2010-10-07 10:27:42 +00:00
|
|
|
if (dss_has_feature(FEAT_DSI_REVERSE_TXCLKESC)) {
|
|
|
|
b0 = 28;
|
|
|
|
b1 = 27;
|
|
|
|
b2 = 26;
|
|
|
|
} else {
|
|
|
|
b0 = 24;
|
|
|
|
b1 = 25;
|
|
|
|
b2 = 26;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_DSIPHY_CFG5);
|
2010-10-07 10:27:42 +00:00
|
|
|
printk("PHY (%x%x%x, %d, %d, %d)\n",
|
|
|
|
FLD_GET(l, b0, b0),
|
|
|
|
FLD_GET(l, b1, b1),
|
|
|
|
FLD_GET(l, b2, b2),
|
2009-10-28 09:59:56 +00:00
|
|
|
FLD_GET(l, 29, 29),
|
|
|
|
FLD_GET(l, 30, 30),
|
|
|
|
FLD_GET(l, 31, 31));
|
|
|
|
}
|
|
|
|
#else
|
2011-05-12 11:56:26 +00:00
|
|
|
#define _dsi_print_reset_status(x)
|
2009-10-28 09:59:56 +00:00
|
|
|
#endif
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline int dsi_if_enable(struct platform_device *dsidev, bool enable)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
DSSDBG("dsi_if_enable(%d)\n", enable);
|
|
|
|
|
|
|
|
enable = enable ? 1 : 0;
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_CTRL, enable, 0, 0); /* IF_EN */
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_CTRL, 0, enable) != enable) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("Failed to set dsi_if_enable to %d\n", enable);
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
return dsi->current_cinfo.dsi_pll_hsdiv_dispc_clk;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static unsigned long dsi_get_pll_hsdiv_dsi_rate(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
return dsi->current_cinfo.dsi_pll_hsdiv_dsi_clk;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static unsigned long dsi_get_txbyteclkhs(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
return dsi->current_cinfo.clkin4ddr / 16;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static unsigned long dsi_fclk_rate(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
unsigned long r;
|
2011-05-12 11:56:29 +00:00
|
|
|
int dsi_module = dsi_get_dsidev_id(dsidev);
|
2011-05-27 07:52:19 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
if (dss_get_dsi_clk_source(dsi_module) == OMAP_DSS_CLK_SRC_FCK) {
|
2011-02-24 08:47:30 +00:00
|
|
|
/* DSI FCLK source is DSS_CLK_FCK */
|
2011-05-27 07:52:19 +00:00
|
|
|
r = clk_get_rate(dsi->dss_clk);
|
2009-10-28 09:59:56 +00:00
|
|
|
} else {
|
2011-02-24 08:47:30 +00:00
|
|
|
/* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_get_pll_hsdiv_dsi_rate(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dsi_set_lp_clk_divisor(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
unsigned long dsi_fclk;
|
|
|
|
unsigned lp_clk_div;
|
|
|
|
unsigned long lp_clk;
|
|
|
|
|
2011-02-22 11:36:10 +00:00
|
|
|
lp_clk_div = dssdev->clocks.dsi.lp_clk_div;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (lp_clk_div == 0 || lp_clk_div > dsi->lpdiv_max)
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_fclk = dsi_fclk_rate(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
lp_clk = dsi_fclk / 2 / lp_clk_div;
|
|
|
|
|
|
|
|
DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk);
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->current_cinfo.lp_clk = lp_clk;
|
|
|
|
dsi->current_cinfo.lp_clk_div = lp_clk_div;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
/* LP_CLK_DIVISOR */
|
|
|
|
REG_FLD_MOD(dsidev, DSI_CLK_CTRL, lp_clk_div, 12, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
/* LP_RX_SYNCHRO_ENABLE */
|
|
|
|
REG_FLD_MOD(dsidev, DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0, 21, 21);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_enable_scp_clk(struct platform_device *dsidev)
|
2011-04-13 14:12:52 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
if (dsi->scp_clk_refcount++ == 0)
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 1, 14, 14); /* CIO_CLK_ICG */
|
2011-04-13 14:12:52 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_disable_scp_clk(struct platform_device *dsidev)
|
2011-04-13 14:12:52 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
WARN_ON(dsi->scp_clk_refcount == 0);
|
|
|
|
if (--dsi->scp_clk_refcount == 0)
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 14, 14); /* CIO_CLK_ICG */
|
2011-04-13 14:12:52 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
enum dsi_pll_power_state {
|
|
|
|
DSI_PLL_POWER_OFF = 0x0,
|
|
|
|
DSI_PLL_POWER_ON_HSCLK = 0x1,
|
|
|
|
DSI_PLL_POWER_ON_ALL = 0x2,
|
|
|
|
DSI_PLL_POWER_ON_DIV = 0x3,
|
|
|
|
};
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_pll_power(struct platform_device *dsidev,
|
|
|
|
enum dsi_pll_power_state state)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
int t = 0;
|
|
|
|
|
2011-04-15 07:42:59 +00:00
|
|
|
/* DSI-PLL power command 0x3 is not working */
|
|
|
|
if (dss_has_feature(FEAT_DSI_PLL_PWR_BUG) &&
|
|
|
|
state == DSI_PLL_POWER_ON_DIV)
|
|
|
|
state = DSI_PLL_POWER_ON_ALL;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
/* PLL_PWR_CMD */
|
|
|
|
REG_FLD_MOD(dsidev, DSI_CLK_CTRL, state, 31, 30);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* PLL_PWR_STATUS */
|
2011-05-12 11:56:26 +00:00
|
|
|
while (FLD_GET(dsi_read_reg(dsidev, DSI_CLK_CTRL), 29, 28) != state) {
|
2010-01-07 12:19:48 +00:00
|
|
|
if (++t > 1000) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("Failed to set DSI PLL power mode to %d\n",
|
|
|
|
state);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
2010-01-07 12:19:48 +00:00
|
|
|
udelay(1);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* calculate clock rates using dividers in cinfo */
|
2010-12-02 11:27:11 +00:00
|
|
|
static int dsi_calc_clock_rates(struct omap_dss_device *dssdev,
|
|
|
|
struct dsi_clock_info *cinfo)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
if (cinfo->regn == 0 || cinfo->regn > dsi->regn_max)
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (cinfo->regm == 0 || cinfo->regm > dsi->regm_max)
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (cinfo->regm_dispc > dsi->regm_dispc_max)
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (cinfo->regm_dsi > dsi->regm_dsi_max)
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
if (cinfo->use_sys_clk) {
|
2011-05-27 07:52:19 +00:00
|
|
|
cinfo->clkin = clk_get_rate(dsi->sys_clk);
|
2009-10-28 09:59:56 +00:00
|
|
|
/* XXX it is unclear if highfreq should be used
|
2011-02-24 08:47:30 +00:00
|
|
|
* with DSS_SYS_CLK source also */
|
2009-10-28 09:59:56 +00:00
|
|
|
cinfo->highfreq = 0;
|
|
|
|
} else {
|
2010-12-02 11:27:11 +00:00
|
|
|
cinfo->clkin = dispc_pclk_rate(dssdev->manager->id);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
if (cinfo->clkin < 32000000)
|
|
|
|
cinfo->highfreq = 0;
|
|
|
|
else
|
|
|
|
cinfo->highfreq = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
cinfo->fint = cinfo->clkin / (cinfo->regn * (cinfo->highfreq ? 2 : 1));
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (cinfo->fint > dsi->fint_max || cinfo->fint < dsi->fint_min)
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
cinfo->clkin4ddr = 2 * cinfo->regm * cinfo->fint;
|
|
|
|
|
|
|
|
if (cinfo->clkin4ddr > 1800 * 1000 * 1000)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
if (cinfo->regm_dispc > 0)
|
|
|
|
cinfo->dsi_pll_hsdiv_dispc_clk =
|
|
|
|
cinfo->clkin4ddr / cinfo->regm_dispc;
|
2009-10-28 09:59:56 +00:00
|
|
|
else
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->dsi_pll_hsdiv_dispc_clk = 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
if (cinfo->regm_dsi > 0)
|
|
|
|
cinfo->dsi_pll_hsdiv_dsi_clk =
|
|
|
|
cinfo->clkin4ddr / cinfo->regm_dsi;
|
2009-10-28 09:59:56 +00:00
|
|
|
else
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->dsi_pll_hsdiv_dsi_clk = 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
int dsi_pll_calc_clock_div_pck(struct platform_device *dsidev, bool is_tft,
|
|
|
|
unsigned long req_pck, struct dsi_clock_info *dsi_cinfo,
|
2009-10-28 09:59:56 +00:00
|
|
|
struct dispc_clock_info *dispc_cinfo)
|
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
struct dsi_clock_info cur, best;
|
|
|
|
struct dispc_clock_info best_dispc;
|
|
|
|
int min_fck_per_pck;
|
|
|
|
int match = 0;
|
2011-02-24 08:47:30 +00:00
|
|
|
unsigned long dss_sys_clk, max_dss_fck;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
dss_sys_clk = clk_get_rate(dsi->sys_clk);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-15 04:28:22 +00:00
|
|
|
max_dss_fck = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK);
|
2011-03-01 06:24:00 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (req_pck == dsi->cache_req_pck &&
|
|
|
|
dsi->cache_cinfo.clkin == dss_sys_clk) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("DSI clock info found from cache\n");
|
2011-05-12 11:56:27 +00:00
|
|
|
*dsi_cinfo = dsi->cache_cinfo;
|
2011-02-24 08:47:30 +00:00
|
|
|
dispc_find_clk_divs(is_tft, req_pck,
|
|
|
|
dsi_cinfo->dsi_pll_hsdiv_dispc_clk, dispc_cinfo);
|
2009-10-28 09:59:56 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
|
|
|
|
|
|
|
|
if (min_fck_per_pck &&
|
2011-03-01 06:24:00 +00:00
|
|
|
req_pck * min_fck_per_pck > max_dss_fck) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("Requested pixel clock not possible with the current "
|
|
|
|
"OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning "
|
|
|
|
"the constraint off.\n");
|
|
|
|
min_fck_per_pck = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
DSSDBG("dsi_pll_calc\n");
|
|
|
|
|
|
|
|
retry:
|
|
|
|
memset(&best, 0, sizeof(best));
|
|
|
|
memset(&best_dispc, 0, sizeof(best_dispc));
|
|
|
|
|
|
|
|
memset(&cur, 0, sizeof(cur));
|
2011-02-24 08:47:30 +00:00
|
|
|
cur.clkin = dss_sys_clk;
|
|
|
|
cur.use_sys_clk = 1;
|
2009-10-28 09:59:56 +00:00
|
|
|
cur.highfreq = 0;
|
|
|
|
|
|
|
|
/* no highfreq: 0.75MHz < Fint = clkin / regn < 2.1MHz */
|
|
|
|
/* highfreq: 0.75MHz < Fint = clkin / (2*regn) < 2.1MHz */
|
|
|
|
/* To reduce PLL lock time, keep Fint high (around 2 MHz) */
|
2011-05-12 11:56:27 +00:00
|
|
|
for (cur.regn = 1; cur.regn < dsi->regn_max; ++cur.regn) {
|
2009-10-28 09:59:56 +00:00
|
|
|
if (cur.highfreq == 0)
|
|
|
|
cur.fint = cur.clkin / cur.regn;
|
|
|
|
else
|
|
|
|
cur.fint = cur.clkin / (2 * cur.regn);
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (cur.fint > dsi->fint_max || cur.fint < dsi->fint_min)
|
2009-10-28 09:59:56 +00:00
|
|
|
continue;
|
|
|
|
|
|
|
|
/* DSIPHY(MHz) = (2 * regm / regn) * (clkin / (highfreq + 1)) */
|
2011-05-12 11:56:27 +00:00
|
|
|
for (cur.regm = 1; cur.regm < dsi->regm_max; ++cur.regm) {
|
2009-10-28 09:59:56 +00:00
|
|
|
unsigned long a, b;
|
|
|
|
|
|
|
|
a = 2 * cur.regm * (cur.clkin/1000);
|
|
|
|
b = cur.regn * (cur.highfreq + 1);
|
|
|
|
cur.clkin4ddr = a / b * 1000;
|
|
|
|
|
|
|
|
if (cur.clkin4ddr > 1800 * 1000 * 1000)
|
|
|
|
break;
|
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
/* dsi_pll_hsdiv_dispc_clk(MHz) =
|
|
|
|
* DSIPHY(MHz) / regm_dispc < 173MHz/186Mhz */
|
2011-05-12 11:56:27 +00:00
|
|
|
for (cur.regm_dispc = 1; cur.regm_dispc <
|
|
|
|
dsi->regm_dispc_max; ++cur.regm_dispc) {
|
2009-10-28 09:59:56 +00:00
|
|
|
struct dispc_clock_info cur_dispc;
|
2011-02-24 08:47:30 +00:00
|
|
|
cur.dsi_pll_hsdiv_dispc_clk =
|
|
|
|
cur.clkin4ddr / cur.regm_dispc;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* this will narrow down the search a bit,
|
|
|
|
* but still give pixclocks below what was
|
|
|
|
* requested */
|
2011-02-24 08:47:30 +00:00
|
|
|
if (cur.dsi_pll_hsdiv_dispc_clk < req_pck)
|
2009-10-28 09:59:56 +00:00
|
|
|
break;
|
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
if (cur.dsi_pll_hsdiv_dispc_clk > max_dss_fck)
|
2009-10-28 09:59:56 +00:00
|
|
|
continue;
|
|
|
|
|
|
|
|
if (min_fck_per_pck &&
|
2011-02-24 08:47:30 +00:00
|
|
|
cur.dsi_pll_hsdiv_dispc_clk <
|
2009-10-28 09:59:56 +00:00
|
|
|
req_pck * min_fck_per_pck)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
match = 1;
|
|
|
|
|
|
|
|
dispc_find_clk_divs(is_tft, req_pck,
|
2011-02-24 08:47:30 +00:00
|
|
|
cur.dsi_pll_hsdiv_dispc_clk,
|
2009-10-28 09:59:56 +00:00
|
|
|
&cur_dispc);
|
|
|
|
|
|
|
|
if (abs(cur_dispc.pck - req_pck) <
|
|
|
|
abs(best_dispc.pck - req_pck)) {
|
|
|
|
best = cur;
|
|
|
|
best_dispc = cur_dispc;
|
|
|
|
|
|
|
|
if (cur_dispc.pck == req_pck)
|
|
|
|
goto found;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
found:
|
|
|
|
if (!match) {
|
|
|
|
if (min_fck_per_pck) {
|
|
|
|
DSSERR("Could not find suitable clock settings.\n"
|
|
|
|
"Turning FCK/PCK constraint off and"
|
|
|
|
"trying again.\n");
|
|
|
|
min_fck_per_pck = 0;
|
|
|
|
goto retry;
|
|
|
|
}
|
|
|
|
|
|
|
|
DSSERR("Could not find suitable clock settings.\n");
|
|
|
|
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
/* dsi_pll_hsdiv_dsi_clk (regm_dsi) is not used */
|
|
|
|
best.regm_dsi = 0;
|
|
|
|
best.dsi_pll_hsdiv_dsi_clk = 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
if (dsi_cinfo)
|
|
|
|
*dsi_cinfo = best;
|
|
|
|
if (dispc_cinfo)
|
|
|
|
*dispc_cinfo = best_dispc;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->cache_req_pck = req_pck;
|
|
|
|
dsi->cache_clk_freq = 0;
|
|
|
|
dsi->cache_cinfo = best;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
int dsi_pll_set_clock_div(struct platform_device *dsidev,
|
|
|
|
struct dsi_clock_info *cinfo)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int r = 0;
|
|
|
|
u32 l;
|
2011-03-22 11:33:36 +00:00
|
|
|
int f = 0;
|
2011-03-15 04:28:23 +00:00
|
|
|
u8 regn_start, regn_end, regm_start, regm_end;
|
|
|
|
u8 regm_dispc_start, regm_dispc_end, regm_dsi_start, regm_dsi_end;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBGF();
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->current_cinfo.use_sys_clk = cinfo->use_sys_clk;
|
|
|
|
dsi->current_cinfo.highfreq = cinfo->highfreq;
|
2011-04-07 12:28:47 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->current_cinfo.fint = cinfo->fint;
|
|
|
|
dsi->current_cinfo.clkin4ddr = cinfo->clkin4ddr;
|
|
|
|
dsi->current_cinfo.dsi_pll_hsdiv_dispc_clk =
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->dsi_pll_hsdiv_dispc_clk;
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->current_cinfo.dsi_pll_hsdiv_dsi_clk =
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->dsi_pll_hsdiv_dsi_clk;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->current_cinfo.regn = cinfo->regn;
|
|
|
|
dsi->current_cinfo.regm = cinfo->regm;
|
|
|
|
dsi->current_cinfo.regm_dispc = cinfo->regm_dispc;
|
|
|
|
dsi->current_cinfo.regm_dsi = cinfo->regm_dsi;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBG("DSI Fint %ld\n", cinfo->fint);
|
|
|
|
|
|
|
|
DSSDBG("clkin (%s) rate %ld, highfreq %d\n",
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree",
|
2009-10-28 09:59:56 +00:00
|
|
|
cinfo->clkin,
|
|
|
|
cinfo->highfreq);
|
|
|
|
|
|
|
|
/* DSIPHY == CLKIN4DDR */
|
|
|
|
DSSDBG("CLKIN4DDR = 2 * %d / %d * %lu / %d = %lu\n",
|
|
|
|
cinfo->regm,
|
|
|
|
cinfo->regn,
|
|
|
|
cinfo->clkin,
|
|
|
|
cinfo->highfreq + 1,
|
|
|
|
cinfo->clkin4ddr);
|
|
|
|
|
|
|
|
DSSDBG("Data rate on 1 DSI lane %ld Mbps\n",
|
|
|
|
cinfo->clkin4ddr / 1000 / 1000 / 2);
|
|
|
|
|
|
|
|
DSSDBG("Clock lane freq %ld Hz\n", cinfo->clkin4ddr / 4);
|
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
DSSDBG("regm_dispc = %d, %s (%s) = %lu\n", cinfo->regm_dispc,
|
2011-04-12 08:22:23 +00:00
|
|
|
dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
|
|
|
|
dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->dsi_pll_hsdiv_dispc_clk);
|
|
|
|
DSSDBG("regm_dsi = %d, %s (%s) = %lu\n", cinfo->regm_dsi,
|
2011-04-12 08:22:23 +00:00
|
|
|
dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
|
|
|
|
dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->dsi_pll_hsdiv_dsi_clk);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-15 04:28:23 +00:00
|
|
|
dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGN, ®n_start, ®n_end);
|
|
|
|
dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM, ®m_start, ®m_end);
|
|
|
|
dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DISPC, ®m_dispc_start,
|
|
|
|
®m_dispc_end);
|
|
|
|
dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DSI, ®m_dsi_start,
|
|
|
|
®m_dsi_end);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
/* DSI_PLL_AUTOMODE = manual */
|
|
|
|
REG_FLD_MOD(dsidev, DSI_PLL_CONTROL, 0, 0, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION1);
|
2009-10-28 09:59:56 +00:00
|
|
|
l = FLD_MOD(l, 1, 0, 0); /* DSI_PLL_STOPMODE */
|
2011-03-15 04:28:23 +00:00
|
|
|
/* DSI_PLL_REGN */
|
|
|
|
l = FLD_MOD(l, cinfo->regn - 1, regn_start, regn_end);
|
|
|
|
/* DSI_PLL_REGM */
|
|
|
|
l = FLD_MOD(l, cinfo->regm, regm_start, regm_end);
|
|
|
|
/* DSI_CLOCK_DIV */
|
2011-02-24 08:47:30 +00:00
|
|
|
l = FLD_MOD(l, cinfo->regm_dispc > 0 ? cinfo->regm_dispc - 1 : 0,
|
2011-03-15 04:28:23 +00:00
|
|
|
regm_dispc_start, regm_dispc_end);
|
|
|
|
/* DSIPROTO_CLOCK_DIV */
|
2011-02-24 08:47:30 +00:00
|
|
|
l = FLD_MOD(l, cinfo->regm_dsi > 0 ? cinfo->regm_dsi - 1 : 0,
|
2011-03-15 04:28:23 +00:00
|
|
|
regm_dsi_start, regm_dsi_end);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION1, l);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
BUG_ON(cinfo->fint < dsi->fint_min || cinfo->fint > dsi->fint_max);
|
2011-03-22 11:33:36 +00:00
|
|
|
|
|
|
|
if (dss_has_feature(FEAT_DSI_PLL_FREQSEL)) {
|
|
|
|
f = cinfo->fint < 1000000 ? 0x3 :
|
|
|
|
cinfo->fint < 1250000 ? 0x4 :
|
|
|
|
cinfo->fint < 1500000 ? 0x5 :
|
|
|
|
cinfo->fint < 1750000 ? 0x6 :
|
|
|
|
0x7;
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION2);
|
2011-03-22 11:33:36 +00:00
|
|
|
|
|
|
|
if (dss_has_feature(FEAT_DSI_PLL_FREQSEL))
|
|
|
|
l = FLD_MOD(l, f, 4, 1); /* DSI_PLL_FREQSEL */
|
2011-02-24 08:47:30 +00:00
|
|
|
l = FLD_MOD(l, cinfo->use_sys_clk ? 0 : 1,
|
2009-10-28 09:59:56 +00:00
|
|
|
11, 11); /* DSI_PLL_CLKSEL */
|
|
|
|
l = FLD_MOD(l, cinfo->highfreq,
|
|
|
|
12, 12); /* DSI_PLL_HIGHFREQ */
|
|
|
|
l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
|
|
|
|
l = FLD_MOD(l, 0, 14, 14); /* DSIPHY_CLKINEN */
|
|
|
|
l = FLD_MOD(l, 1, 20, 20); /* DSI_HSDIVBYPASS */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION2, l);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_PLL_GO, 1, 0, 0); /* DSI_PLL_GO */
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_PLL_GO, 0, 0) != 0) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("dsi pll go bit not going down.\n");
|
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 1, 1) != 1) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("cannot lock PLL\n");
|
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->pll_locked = 1;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION2);
|
2009-10-28 09:59:56 +00:00
|
|
|
l = FLD_MOD(l, 0, 0, 0); /* DSI_PLL_IDLE */
|
|
|
|
l = FLD_MOD(l, 0, 5, 5); /* DSI_PLL_PLLLPMODE */
|
|
|
|
l = FLD_MOD(l, 0, 6, 6); /* DSI_PLL_LOWCURRSTBY */
|
|
|
|
l = FLD_MOD(l, 0, 7, 7); /* DSI_PLL_TIGHTPHASELOCK */
|
|
|
|
l = FLD_MOD(l, 0, 8, 8); /* DSI_PLL_DRIFTGUARDEN */
|
|
|
|
l = FLD_MOD(l, 0, 10, 9); /* DSI_PLL_LOCKSEL */
|
|
|
|
l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
|
|
|
|
l = FLD_MOD(l, 1, 14, 14); /* DSIPHY_CLKINEN */
|
|
|
|
l = FLD_MOD(l, 0, 15, 15); /* DSI_BYPASSEN */
|
|
|
|
l = FLD_MOD(l, 1, 16, 16); /* DSS_CLOCK_EN */
|
|
|
|
l = FLD_MOD(l, 0, 17, 17); /* DSS_CLOCK_PWDN */
|
|
|
|
l = FLD_MOD(l, 1, 18, 18); /* DSI_PROTO_CLOCK_EN */
|
|
|
|
l = FLD_MOD(l, 0, 19, 19); /* DSI_PROTO_CLOCK_PWDN */
|
|
|
|
l = FLD_MOD(l, 0, 20, 20); /* DSI_HSDIVBYPASS */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION2, l);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBG("PLL config done\n");
|
|
|
|
err:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
int dsi_pll_init(struct platform_device *dsidev, bool enable_hsclk,
|
|
|
|
bool enable_hsdiv)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int r = 0;
|
|
|
|
enum dsi_pll_power_state pwstate;
|
|
|
|
|
|
|
|
DSSDBG("PLL init\n");
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->vdds_dsi_reg == NULL) {
|
2011-03-02 08:06:48 +00:00
|
|
|
struct regulator *vdds_dsi;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
vdds_dsi = regulator_get(&dsi->pdev->dev, "vdds_dsi");
|
2011-03-02 08:06:48 +00:00
|
|
|
|
|
|
|
if (IS_ERR(vdds_dsi)) {
|
|
|
|
DSSERR("can't get VDDS_DSI regulator\n");
|
|
|
|
return PTR_ERR(vdds_dsi);
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vdds_dsi_reg = vdds_dsi;
|
2011-03-02 08:06:48 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_enable_pll_clock(dsidev, 1);
|
2011-04-13 14:12:52 +00:00
|
|
|
/*
|
|
|
|
* Note: SCP CLK is not required on OMAP3, but it is required on OMAP4.
|
|
|
|
*/
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_enable_scp_clk(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (!dsi->vdds_dsi_enabled) {
|
|
|
|
r = regulator_enable(dsi->vdds_dsi_reg);
|
2010-07-30 09:39:34 +00:00
|
|
|
if (r)
|
|
|
|
goto err0;
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vdds_dsi_enabled = true;
|
2010-07-30 09:39:34 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* XXX PLL does not come out of reset without this... */
|
|
|
|
dispc_pck_free_enable(1);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 0, 1) != 1) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("PLL not coming out of reset.\n");
|
|
|
|
r = -ENODEV;
|
2010-04-22 20:50:04 +00:00
|
|
|
dispc_pck_free_enable(0);
|
2009-10-28 09:59:56 +00:00
|
|
|
goto err1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* XXX ... but if left on, we get problems when planes do not
|
|
|
|
* fill the whole display. No idea about this */
|
|
|
|
dispc_pck_free_enable(0);
|
|
|
|
|
|
|
|
if (enable_hsclk && enable_hsdiv)
|
|
|
|
pwstate = DSI_PLL_POWER_ON_ALL;
|
|
|
|
else if (enable_hsclk)
|
|
|
|
pwstate = DSI_PLL_POWER_ON_HSCLK;
|
|
|
|
else if (enable_hsdiv)
|
|
|
|
pwstate = DSI_PLL_POWER_ON_DIV;
|
|
|
|
else
|
|
|
|
pwstate = DSI_PLL_POWER_OFF;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_pll_power(dsidev, pwstate);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
if (r)
|
|
|
|
goto err1;
|
|
|
|
|
|
|
|
DSSDBG("PLL init done\n");
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
err1:
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->vdds_dsi_enabled) {
|
|
|
|
regulator_disable(dsi->vdds_dsi_reg);
|
|
|
|
dsi->vdds_dsi_enabled = false;
|
2010-07-30 09:39:34 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
err0:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_disable_scp_clk(dsidev);
|
|
|
|
dsi_enable_pll_clock(dsidev, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
void dsi_pll_uninit(struct platform_device *dsidev, bool disconnect_lanes)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
dsi->pll_locked = 0;
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_pll_power(dsidev, DSI_PLL_POWER_OFF);
|
2010-07-30 09:39:34 +00:00
|
|
|
if (disconnect_lanes) {
|
2011-05-12 11:56:27 +00:00
|
|
|
WARN_ON(!dsi->vdds_dsi_enabled);
|
|
|
|
regulator_disable(dsi->vdds_dsi_reg);
|
|
|
|
dsi->vdds_dsi_enabled = false;
|
2010-07-30 09:39:34 +00:00
|
|
|
}
|
2011-04-13 14:12:52 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_disable_scp_clk(dsidev);
|
|
|
|
dsi_enable_pll_clock(dsidev, 0);
|
2011-04-13 14:12:52 +00:00
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("PLL uninit done\n");
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
static void dsi_dump_dsidev_clocks(struct platform_device *dsidev,
|
|
|
|
struct seq_file *s)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
struct dsi_clock_info *cinfo = &dsi->current_cinfo;
|
2011-04-12 08:22:23 +00:00
|
|
|
enum omap_dss_clk_source dispc_clk_src, dsi_clk_src;
|
2011-05-12 11:56:29 +00:00
|
|
|
int dsi_module = dsi_get_dsidev_id(dsidev);
|
2011-03-02 06:27:25 +00:00
|
|
|
|
|
|
|
dispc_clk_src = dss_get_dispc_clk_source();
|
2011-05-12 11:56:29 +00:00
|
|
|
dsi_clk_src = dss_get_dsi_clk_source(dsi_module);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
if (dsi_runtime_get(dsidev))
|
|
|
|
return;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
seq_printf(s, "- DSI%d PLL -\n", dsi_module + 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
seq_printf(s, "dsi pll source = %s\n",
|
2011-04-04 07:02:53 +00:00
|
|
|
cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree");
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
seq_printf(s, "Fint\t\t%-16luregn %u\n", cinfo->fint, cinfo->regn);
|
|
|
|
|
|
|
|
seq_printf(s, "CLKIN4DDR\t%-16luregm %u\n",
|
|
|
|
cinfo->clkin4ddr, cinfo->regm);
|
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
seq_printf(s, "%s (%s)\t%-16luregm_dispc %u\t(%s)\n",
|
2011-03-02 06:27:25 +00:00
|
|
|
dss_get_generic_clk_source_name(dispc_clk_src),
|
|
|
|
dss_feat_get_clk_source_name(dispc_clk_src),
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->dsi_pll_hsdiv_dispc_clk,
|
|
|
|
cinfo->regm_dispc,
|
2011-04-12 08:22:23 +00:00
|
|
|
dispc_clk_src == OMAP_DSS_CLK_SRC_FCK ?
|
2010-02-23 15:40:00 +00:00
|
|
|
"off" : "on");
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
seq_printf(s, "%s (%s)\t%-16luregm_dsi %u\t(%s)\n",
|
2011-03-02 06:27:25 +00:00
|
|
|
dss_get_generic_clk_source_name(dsi_clk_src),
|
|
|
|
dss_feat_get_clk_source_name(dsi_clk_src),
|
2011-02-24 08:47:30 +00:00
|
|
|
cinfo->dsi_pll_hsdiv_dsi_clk,
|
|
|
|
cinfo->regm_dsi,
|
2011-04-12 08:22:23 +00:00
|
|
|
dsi_clk_src == OMAP_DSS_CLK_SRC_FCK ?
|
2010-02-23 15:40:00 +00:00
|
|
|
"off" : "on");
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
seq_printf(s, "- DSI%d -\n", dsi_module + 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 06:27:25 +00:00
|
|
|
seq_printf(s, "dsi fclk source = %s (%s)\n",
|
|
|
|
dss_get_generic_clk_source_name(dsi_clk_src),
|
|
|
|
dss_feat_get_clk_source_name(dsi_clk_src));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate(dsidev));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
seq_printf(s, "DDR_CLK\t\t%lu\n",
|
|
|
|
cinfo->clkin4ddr / 4);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs(dsidev));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
seq_printf(s, "LP_CLK\t\t%lu\n", cinfo->lp_clk);
|
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
dsi_runtime_put(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
void dsi_dump_clocks(struct seq_file *s)
|
|
|
|
{
|
|
|
|
struct platform_device *dsidev;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < MAX_NUM_DSI; i++) {
|
|
|
|
dsidev = dsi_get_dsidev_from_id(i);
|
|
|
|
if (dsidev)
|
|
|
|
dsi_dump_dsidev_clocks(dsidev, s);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-12-17 12:35:21 +00:00
|
|
|
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
|
2011-05-12 11:56:29 +00:00
|
|
|
static void dsi_dump_dsidev_irqs(struct platform_device *dsidev,
|
|
|
|
struct seq_file *s)
|
2009-12-17 12:35:21 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-12-17 12:35:21 +00:00
|
|
|
unsigned long flags;
|
|
|
|
struct dsi_irq_stats stats;
|
2011-05-12 11:56:29 +00:00
|
|
|
int dsi_module = dsi_get_dsidev_id(dsidev);
|
2009-12-17 12:35:21 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_irqsave(&dsi->irq_stats_lock, flags);
|
2009-12-17 12:35:21 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
stats = dsi->irq_stats;
|
|
|
|
memset(&dsi->irq_stats, 0, sizeof(dsi->irq_stats));
|
|
|
|
dsi->irq_stats.last_reset = jiffies;
|
2009-12-17 12:35:21 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_unlock_irqrestore(&dsi->irq_stats_lock, flags);
|
2009-12-17 12:35:21 +00:00
|
|
|
|
|
|
|
seq_printf(s, "period %u ms\n",
|
|
|
|
jiffies_to_msecs(jiffies - stats.last_reset));
|
|
|
|
|
|
|
|
seq_printf(s, "irqs %d\n", stats.irq_count);
|
|
|
|
#define PIS(x) \
|
|
|
|
seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]);
|
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
seq_printf(s, "-- DSI%d interrupts --\n", dsi_module + 1);
|
2009-12-17 12:35:21 +00:00
|
|
|
PIS(VC0);
|
|
|
|
PIS(VC1);
|
|
|
|
PIS(VC2);
|
|
|
|
PIS(VC3);
|
|
|
|
PIS(WAKEUP);
|
|
|
|
PIS(RESYNC);
|
|
|
|
PIS(PLL_LOCK);
|
|
|
|
PIS(PLL_UNLOCK);
|
|
|
|
PIS(PLL_RECALL);
|
|
|
|
PIS(COMPLEXIO_ERR);
|
|
|
|
PIS(HS_TX_TIMEOUT);
|
|
|
|
PIS(LP_RX_TIMEOUT);
|
|
|
|
PIS(TE_TRIGGER);
|
|
|
|
PIS(ACK_TRIGGER);
|
|
|
|
PIS(SYNC_LOST);
|
|
|
|
PIS(LDO_POWER_GOOD);
|
|
|
|
PIS(TA_TIMEOUT);
|
|
|
|
#undef PIS
|
|
|
|
|
|
|
|
#define PIS(x) \
|
|
|
|
seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \
|
|
|
|
stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \
|
|
|
|
stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \
|
|
|
|
stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \
|
|
|
|
stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]);
|
|
|
|
|
|
|
|
seq_printf(s, "-- VC interrupts --\n");
|
|
|
|
PIS(CS);
|
|
|
|
PIS(ECC_CORR);
|
|
|
|
PIS(PACKET_SENT);
|
|
|
|
PIS(FIFO_TX_OVF);
|
|
|
|
PIS(FIFO_RX_OVF);
|
|
|
|
PIS(BTA);
|
|
|
|
PIS(ECC_NO_CORR);
|
|
|
|
PIS(FIFO_TX_UDF);
|
|
|
|
PIS(PP_BUSY_CHANGE);
|
|
|
|
#undef PIS
|
|
|
|
|
|
|
|
#define PIS(x) \
|
|
|
|
seq_printf(s, "%-20s %10d\n", #x, \
|
|
|
|
stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]);
|
|
|
|
|
|
|
|
seq_printf(s, "-- CIO interrupts --\n");
|
|
|
|
PIS(ERRSYNCESC1);
|
|
|
|
PIS(ERRSYNCESC2);
|
|
|
|
PIS(ERRSYNCESC3);
|
|
|
|
PIS(ERRESC1);
|
|
|
|
PIS(ERRESC2);
|
|
|
|
PIS(ERRESC3);
|
|
|
|
PIS(ERRCONTROL1);
|
|
|
|
PIS(ERRCONTROL2);
|
|
|
|
PIS(ERRCONTROL3);
|
|
|
|
PIS(STATEULPS1);
|
|
|
|
PIS(STATEULPS2);
|
|
|
|
PIS(STATEULPS3);
|
|
|
|
PIS(ERRCONTENTIONLP0_1);
|
|
|
|
PIS(ERRCONTENTIONLP1_1);
|
|
|
|
PIS(ERRCONTENTIONLP0_2);
|
|
|
|
PIS(ERRCONTENTIONLP1_2);
|
|
|
|
PIS(ERRCONTENTIONLP0_3);
|
|
|
|
PIS(ERRCONTENTIONLP1_3);
|
|
|
|
PIS(ULPSACTIVENOT_ALL0);
|
|
|
|
PIS(ULPSACTIVENOT_ALL1);
|
|
|
|
#undef PIS
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
static void dsi1_dump_irqs(struct seq_file *s)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_id(0);
|
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
dsi_dump_dsidev_irqs(dsidev, s);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi2_dump_irqs(struct seq_file *s)
|
|
|
|
{
|
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_id(1);
|
|
|
|
|
|
|
|
dsi_dump_dsidev_irqs(dsidev, s);
|
|
|
|
}
|
|
|
|
|
|
|
|
void dsi_create_debugfs_files_irq(struct dentry *debugfs_dir,
|
|
|
|
const struct file_operations *debug_fops)
|
|
|
|
{
|
|
|
|
struct platform_device *dsidev;
|
|
|
|
|
|
|
|
dsidev = dsi_get_dsidev_from_id(0);
|
|
|
|
if (dsidev)
|
|
|
|
debugfs_create_file("dsi1_irqs", S_IRUGO, debugfs_dir,
|
|
|
|
&dsi1_dump_irqs, debug_fops);
|
|
|
|
|
|
|
|
dsidev = dsi_get_dsidev_from_id(1);
|
|
|
|
if (dsidev)
|
|
|
|
debugfs_create_file("dsi2_irqs", S_IRUGO, debugfs_dir,
|
|
|
|
&dsi2_dump_irqs, debug_fops);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static void dsi_dump_dsidev_regs(struct platform_device *dsidev,
|
|
|
|
struct seq_file *s)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(dsidev, r))
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
if (dsi_runtime_get(dsidev))
|
|
|
|
return;
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_enable_scp_clk(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DUMPREG(DSI_REVISION);
|
|
|
|
DUMPREG(DSI_SYSCONFIG);
|
|
|
|
DUMPREG(DSI_SYSSTATUS);
|
|
|
|
DUMPREG(DSI_IRQSTATUS);
|
|
|
|
DUMPREG(DSI_IRQENABLE);
|
|
|
|
DUMPREG(DSI_CTRL);
|
|
|
|
DUMPREG(DSI_COMPLEXIO_CFG1);
|
|
|
|
DUMPREG(DSI_COMPLEXIO_IRQ_STATUS);
|
|
|
|
DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE);
|
|
|
|
DUMPREG(DSI_CLK_CTRL);
|
|
|
|
DUMPREG(DSI_TIMING1);
|
|
|
|
DUMPREG(DSI_TIMING2);
|
|
|
|
DUMPREG(DSI_VM_TIMING1);
|
|
|
|
DUMPREG(DSI_VM_TIMING2);
|
|
|
|
DUMPREG(DSI_VM_TIMING3);
|
|
|
|
DUMPREG(DSI_CLK_TIMING);
|
|
|
|
DUMPREG(DSI_TX_FIFO_VC_SIZE);
|
|
|
|
DUMPREG(DSI_RX_FIFO_VC_SIZE);
|
|
|
|
DUMPREG(DSI_COMPLEXIO_CFG2);
|
|
|
|
DUMPREG(DSI_RX_FIFO_VC_FULLNESS);
|
|
|
|
DUMPREG(DSI_VM_TIMING4);
|
|
|
|
DUMPREG(DSI_TX_FIFO_VC_EMPTINESS);
|
|
|
|
DUMPREG(DSI_VM_TIMING5);
|
|
|
|
DUMPREG(DSI_VM_TIMING6);
|
|
|
|
DUMPREG(DSI_VM_TIMING7);
|
|
|
|
DUMPREG(DSI_STOPCLK_TIMING);
|
|
|
|
|
|
|
|
DUMPREG(DSI_VC_CTRL(0));
|
|
|
|
DUMPREG(DSI_VC_TE(0));
|
|
|
|
DUMPREG(DSI_VC_LONG_PACKET_HEADER(0));
|
|
|
|
DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0));
|
|
|
|
DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0));
|
|
|
|
DUMPREG(DSI_VC_IRQSTATUS(0));
|
|
|
|
DUMPREG(DSI_VC_IRQENABLE(0));
|
|
|
|
|
|
|
|
DUMPREG(DSI_VC_CTRL(1));
|
|
|
|
DUMPREG(DSI_VC_TE(1));
|
|
|
|
DUMPREG(DSI_VC_LONG_PACKET_HEADER(1));
|
|
|
|
DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1));
|
|
|
|
DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1));
|
|
|
|
DUMPREG(DSI_VC_IRQSTATUS(1));
|
|
|
|
DUMPREG(DSI_VC_IRQENABLE(1));
|
|
|
|
|
|
|
|
DUMPREG(DSI_VC_CTRL(2));
|
|
|
|
DUMPREG(DSI_VC_TE(2));
|
|
|
|
DUMPREG(DSI_VC_LONG_PACKET_HEADER(2));
|
|
|
|
DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2));
|
|
|
|
DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2));
|
|
|
|
DUMPREG(DSI_VC_IRQSTATUS(2));
|
|
|
|
DUMPREG(DSI_VC_IRQENABLE(2));
|
|
|
|
|
|
|
|
DUMPREG(DSI_VC_CTRL(3));
|
|
|
|
DUMPREG(DSI_VC_TE(3));
|
|
|
|
DUMPREG(DSI_VC_LONG_PACKET_HEADER(3));
|
|
|
|
DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3));
|
|
|
|
DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3));
|
|
|
|
DUMPREG(DSI_VC_IRQSTATUS(3));
|
|
|
|
DUMPREG(DSI_VC_IRQENABLE(3));
|
|
|
|
|
|
|
|
DUMPREG(DSI_DSIPHY_CFG0);
|
|
|
|
DUMPREG(DSI_DSIPHY_CFG1);
|
|
|
|
DUMPREG(DSI_DSIPHY_CFG2);
|
|
|
|
DUMPREG(DSI_DSIPHY_CFG5);
|
|
|
|
|
|
|
|
DUMPREG(DSI_PLL_CONTROL);
|
|
|
|
DUMPREG(DSI_PLL_STATUS);
|
|
|
|
DUMPREG(DSI_PLL_GO);
|
|
|
|
DUMPREG(DSI_PLL_CONFIGURATION1);
|
|
|
|
DUMPREG(DSI_PLL_CONFIGURATION2);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_disable_scp_clk(dsidev);
|
2011-05-27 07:52:19 +00:00
|
|
|
dsi_runtime_put(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
#undef DUMPREG
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:29 +00:00
|
|
|
static void dsi1_dump_regs(struct seq_file *s)
|
|
|
|
{
|
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_id(0);
|
|
|
|
|
|
|
|
dsi_dump_dsidev_regs(dsidev, s);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi2_dump_regs(struct seq_file *s)
|
|
|
|
{
|
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_id(1);
|
|
|
|
|
|
|
|
dsi_dump_dsidev_regs(dsidev, s);
|
|
|
|
}
|
|
|
|
|
|
|
|
void dsi_create_debugfs_files_reg(struct dentry *debugfs_dir,
|
|
|
|
const struct file_operations *debug_fops)
|
|
|
|
{
|
|
|
|
struct platform_device *dsidev;
|
|
|
|
|
|
|
|
dsidev = dsi_get_dsidev_from_id(0);
|
|
|
|
if (dsidev)
|
|
|
|
debugfs_create_file("dsi1_regs", S_IRUGO, debugfs_dir,
|
|
|
|
&dsi1_dump_regs, debug_fops);
|
|
|
|
|
|
|
|
dsidev = dsi_get_dsidev_from_id(1);
|
|
|
|
if (dsidev)
|
|
|
|
debugfs_create_file("dsi2_regs", S_IRUGO, debugfs_dir,
|
|
|
|
&dsi2_dump_regs, debug_fops);
|
|
|
|
}
|
2010-10-06 12:18:13 +00:00
|
|
|
enum dsi_cio_power_state {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSI_COMPLEXIO_POWER_OFF = 0x0,
|
|
|
|
DSI_COMPLEXIO_POWER_ON = 0x1,
|
|
|
|
DSI_COMPLEXIO_POWER_ULPS = 0x2,
|
|
|
|
};
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_cio_power(struct platform_device *dsidev,
|
|
|
|
enum dsi_cio_power_state state)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
int t = 0;
|
|
|
|
|
|
|
|
/* PWR_CMD */
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG1, state, 28, 27);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* PWR_STATUS */
|
2011-05-12 11:56:26 +00:00
|
|
|
while (FLD_GET(dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG1),
|
|
|
|
26, 25) != state) {
|
2010-01-07 12:19:48 +00:00
|
|
|
if (++t > 1000) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("failed to set complexio power state to "
|
|
|
|
"%d\n", state);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
2010-01-07 12:19:48 +00:00
|
|
|
udelay(1);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-16 09:47:08 +00:00
|
|
|
/* Number of data lanes present on DSI interface */
|
|
|
|
static inline int dsi_get_num_data_lanes(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
/* DSI on OMAP3 doesn't have register DSI_GNQ, set number
|
|
|
|
* of data lanes as 2 by default */
|
|
|
|
if (dss_has_feature(FEAT_DSI_GNQ))
|
|
|
|
return REG_GET(dsidev, DSI_GNQ, 11, 9); /* NB_DATA_LANES */
|
|
|
|
else
|
|
|
|
return 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Number of data lanes used by the dss device */
|
|
|
|
static inline int dsi_get_num_data_lanes_dssdev(struct omap_dss_device *dssdev)
|
|
|
|
{
|
|
|
|
int num_data_lanes = 0;
|
|
|
|
|
|
|
|
if (dssdev->phy.dsi.data1_lane != 0)
|
|
|
|
num_data_lanes++;
|
|
|
|
if (dssdev->phy.dsi.data2_lane != 0)
|
|
|
|
num_data_lanes++;
|
|
|
|
if (dssdev->phy.dsi.data3_lane != 0)
|
|
|
|
num_data_lanes++;
|
|
|
|
if (dssdev->phy.dsi.data4_lane != 0)
|
|
|
|
num_data_lanes++;
|
|
|
|
|
|
|
|
return num_data_lanes;
|
|
|
|
}
|
|
|
|
|
2011-05-16 09:47:09 +00:00
|
|
|
static unsigned dsi_get_line_buf_size(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
int val;
|
|
|
|
|
|
|
|
/* line buffer on OMAP3 is 1024 x 24bits */
|
|
|
|
/* XXX: for some reason using full buffer size causes
|
|
|
|
* considerable TX slowdown with update sizes that fill the
|
|
|
|
* whole buffer */
|
|
|
|
if (!dss_has_feature(FEAT_DSI_GNQ))
|
|
|
|
return 1023 * 3;
|
|
|
|
|
|
|
|
val = REG_GET(dsidev, DSI_GNQ, 14, 12); /* VP1_LINE_BUFFER_SIZE */
|
|
|
|
|
|
|
|
switch (val) {
|
|
|
|
case 1:
|
|
|
|
return 512 * 3; /* 512x24 bits */
|
|
|
|
case 2:
|
|
|
|
return 682 * 3; /* 682x24 bits */
|
|
|
|
case 3:
|
|
|
|
return 853 * 3; /* 853x24 bits */
|
|
|
|
case 4:
|
|
|
|
return 1024 * 3; /* 1024x24 bits */
|
|
|
|
case 5:
|
|
|
|
return 1194 * 3; /* 1194x24 bits */
|
|
|
|
case 6:
|
|
|
|
return 1365 * 3; /* 1365x24 bits */
|
|
|
|
default:
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-10-06 12:18:13 +00:00
|
|
|
static void dsi_set_lane_config(struct omap_dss_device *dssdev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 r;
|
2011-05-16 09:47:08 +00:00
|
|
|
int num_data_lanes_dssdev = dsi_get_num_data_lanes_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
int clk_lane = dssdev->phy.dsi.clk_lane;
|
|
|
|
int data1_lane = dssdev->phy.dsi.data1_lane;
|
|
|
|
int data2_lane = dssdev->phy.dsi.data2_lane;
|
|
|
|
int clk_pol = dssdev->phy.dsi.clk_pol;
|
|
|
|
int data1_pol = dssdev->phy.dsi.data1_pol;
|
|
|
|
int data2_pol = dssdev->phy.dsi.data2_pol;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG1);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, clk_lane, 2, 0);
|
|
|
|
r = FLD_MOD(r, clk_pol, 3, 3);
|
|
|
|
r = FLD_MOD(r, data1_lane, 6, 4);
|
|
|
|
r = FLD_MOD(r, data1_pol, 7, 7);
|
|
|
|
r = FLD_MOD(r, data2_lane, 10, 8);
|
|
|
|
r = FLD_MOD(r, data2_pol, 11, 11);
|
2011-05-16 09:47:08 +00:00
|
|
|
if (num_data_lanes_dssdev > 2) {
|
|
|
|
int data3_lane = dssdev->phy.dsi.data3_lane;
|
|
|
|
int data3_pol = dssdev->phy.dsi.data3_pol;
|
|
|
|
|
|
|
|
r = FLD_MOD(r, data3_lane, 14, 12);
|
|
|
|
r = FLD_MOD(r, data3_pol, 15, 15);
|
|
|
|
}
|
|
|
|
if (num_data_lanes_dssdev > 3) {
|
|
|
|
int data4_lane = dssdev->phy.dsi.data4_lane;
|
|
|
|
int data4_pol = dssdev->phy.dsi.data4_pol;
|
|
|
|
|
|
|
|
r = FLD_MOD(r, data4_lane, 18, 16);
|
|
|
|
r = FLD_MOD(r, data4_pol, 19, 19);
|
|
|
|
}
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_COMPLEXIO_CFG1, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* The configuration of the DSI complex I/O (number of data lanes,
|
|
|
|
position, differential order) should not be changed while
|
|
|
|
DSS.DSI_CLK_CRTRL[20] LP_CLK_ENABLE bit is set to 1. In order for
|
|
|
|
the hardware to take into account a new configuration of the complex
|
|
|
|
I/O (done in DSS.DSI_COMPLEXIO_CFG1 register), it is recommended to
|
|
|
|
follow this sequence: First set the DSS.DSI_CTRL[0] IF_EN bit to 1,
|
|
|
|
then reset the DSS.DSI_CTRL[0] IF_EN to 0, then set
|
|
|
|
DSS.DSI_CLK_CTRL[20] LP_CLK_ENABLE to 1 and finally set again the
|
|
|
|
DSS.DSI_CTRL[0] IF_EN bit to 1. If the sequence is not followed, the
|
|
|
|
DSI complex I/O configuration is unknown. */
|
|
|
|
|
|
|
|
/*
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_CTRL, 1, 0, 0);
|
|
|
|
REG_FLD_MOD(dsidev, DSI_CTRL, 0, 0, 0);
|
|
|
|
REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 1, 20, 20);
|
|
|
|
REG_FLD_MOD(dsidev, DSI_CTRL, 1, 0, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
*/
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline unsigned ns2ddr(struct platform_device *dsidev, unsigned ns)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
/* convert time in ns to ddr ticks, rounding up */
|
2011-05-12 11:56:27 +00:00
|
|
|
unsigned long ddr_clk = dsi->current_cinfo.clkin4ddr / 4;
|
2009-10-28 09:59:56 +00:00
|
|
|
return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline unsigned ddr2ns(struct platform_device *dsidev, unsigned ddr)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
unsigned long ddr_clk = dsi->current_cinfo.clkin4ddr / 4;
|
2009-10-28 09:59:56 +00:00
|
|
|
return ddr * 1000 * 1000 / (ddr_clk / 1000);
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_cio_timings(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
u32 r;
|
|
|
|
u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit;
|
|
|
|
u32 tlpx_half, tclk_trail, tclk_zero;
|
|
|
|
u32 tclk_prepare;
|
|
|
|
|
|
|
|
/* calculate timings */
|
|
|
|
|
|
|
|
/* 1 * DDR_CLK = 2 * UI */
|
|
|
|
|
|
|
|
/* min 40ns + 4*UI max 85ns + 6*UI */
|
2011-05-12 11:56:26 +00:00
|
|
|
ths_prepare = ns2ddr(dsidev, 70) + 2;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* min 145ns + 10*UI */
|
2011-05-12 11:56:26 +00:00
|
|
|
ths_prepare_ths_zero = ns2ddr(dsidev, 175) + 2;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* min max(8*UI, 60ns+4*UI) */
|
2011-05-12 11:56:26 +00:00
|
|
|
ths_trail = ns2ddr(dsidev, 60) + 5;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* min 100ns */
|
2011-05-12 11:56:26 +00:00
|
|
|
ths_exit = ns2ddr(dsidev, 145);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* tlpx min 50n */
|
2011-05-12 11:56:26 +00:00
|
|
|
tlpx_half = ns2ddr(dsidev, 25);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* min 60ns */
|
2011-05-12 11:56:26 +00:00
|
|
|
tclk_trail = ns2ddr(dsidev, 60) + 2;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* min 38ns, max 95ns */
|
2011-05-12 11:56:26 +00:00
|
|
|
tclk_prepare = ns2ddr(dsidev, 65);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* min tclk-prepare + tclk-zero = 300ns */
|
2011-05-12 11:56:26 +00:00
|
|
|
tclk_zero = ns2ddr(dsidev, 260);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
|
2011-05-12 11:56:26 +00:00
|
|
|
ths_prepare, ddr2ns(dsidev, ths_prepare),
|
|
|
|
ths_prepare_ths_zero, ddr2ns(dsidev, ths_prepare_ths_zero));
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n",
|
2011-05-12 11:56:26 +00:00
|
|
|
ths_trail, ddr2ns(dsidev, ths_trail),
|
|
|
|
ths_exit, ddr2ns(dsidev, ths_exit));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), "
|
|
|
|
"tclk_zero %u (%uns)\n",
|
2011-05-12 11:56:26 +00:00
|
|
|
tlpx_half, ddr2ns(dsidev, tlpx_half),
|
|
|
|
tclk_trail, ddr2ns(dsidev, tclk_trail),
|
|
|
|
tclk_zero, ddr2ns(dsidev, tclk_zero));
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("tclk_prepare %u (%uns)\n",
|
2011-05-12 11:56:26 +00:00
|
|
|
tclk_prepare, ddr2ns(dsidev, tclk_prepare));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* program timings */
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG0);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, ths_prepare, 31, 24);
|
|
|
|
r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16);
|
|
|
|
r = FLD_MOD(r, ths_trail, 15, 8);
|
|
|
|
r = FLD_MOD(r, ths_exit, 7, 0);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_DSIPHY_CFG0, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG1);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, tlpx_half, 22, 16);
|
|
|
|
r = FLD_MOD(r, tclk_trail, 15, 8);
|
|
|
|
r = FLD_MOD(r, tclk_zero, 7, 0);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_DSIPHY_CFG1, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG2);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, tclk_prepare, 7, 0);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_DSIPHY_CFG2, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2010-10-06 12:18:13 +00:00
|
|
|
static void dsi_cio_enable_lane_override(struct omap_dss_device *dssdev,
|
2010-07-27 08:11:48 +00:00
|
|
|
enum dsi_lane lanes)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-16 09:47:08 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2010-07-27 08:11:48 +00:00
|
|
|
int clk_lane = dssdev->phy.dsi.clk_lane;
|
|
|
|
int data1_lane = dssdev->phy.dsi.data1_lane;
|
|
|
|
int data2_lane = dssdev->phy.dsi.data2_lane;
|
2011-05-16 09:47:08 +00:00
|
|
|
int data3_lane = dssdev->phy.dsi.data3_lane;
|
|
|
|
int data4_lane = dssdev->phy.dsi.data4_lane;
|
2010-07-27 08:11:48 +00:00
|
|
|
int clk_pol = dssdev->phy.dsi.clk_pol;
|
|
|
|
int data1_pol = dssdev->phy.dsi.data1_pol;
|
|
|
|
int data2_pol = dssdev->phy.dsi.data2_pol;
|
2011-05-16 09:47:08 +00:00
|
|
|
int data3_pol = dssdev->phy.dsi.data3_pol;
|
|
|
|
int data4_pol = dssdev->phy.dsi.data4_pol;
|
2010-07-27 08:11:48 +00:00
|
|
|
|
|
|
|
u32 l = 0;
|
2011-05-16 09:47:08 +00:00
|
|
|
u8 lptxscp_start = dsi->num_data_lanes == 2 ? 22 : 26;
|
2010-07-27 08:11:48 +00:00
|
|
|
|
|
|
|
if (lanes & DSI_CLK_P)
|
|
|
|
l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 0 : 1));
|
|
|
|
if (lanes & DSI_CLK_N)
|
|
|
|
l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 1 : 0));
|
|
|
|
|
|
|
|
if (lanes & DSI_DATA1_P)
|
|
|
|
l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 0 : 1));
|
|
|
|
if (lanes & DSI_DATA1_N)
|
|
|
|
l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 1 : 0));
|
|
|
|
|
|
|
|
if (lanes & DSI_DATA2_P)
|
|
|
|
l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 0 : 1));
|
|
|
|
if (lanes & DSI_DATA2_N)
|
|
|
|
l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 1 : 0));
|
|
|
|
|
2011-05-16 09:47:08 +00:00
|
|
|
if (lanes & DSI_DATA3_P)
|
|
|
|
l |= 1 << ((data3_lane - 1) * 2 + (data3_pol ? 0 : 1));
|
|
|
|
if (lanes & DSI_DATA3_N)
|
|
|
|
l |= 1 << ((data3_lane - 1) * 2 + (data3_pol ? 1 : 0));
|
|
|
|
|
|
|
|
if (lanes & DSI_DATA4_P)
|
|
|
|
l |= 1 << ((data4_lane - 1) * 2 + (data4_pol ? 0 : 1));
|
|
|
|
if (lanes & DSI_DATA4_N)
|
|
|
|
l |= 1 << ((data4_lane - 1) * 2 + (data4_pol ? 1 : 0));
|
2010-07-27 08:11:48 +00:00
|
|
|
/*
|
|
|
|
* Bits in REGLPTXSCPDAT4TO0DXDY:
|
|
|
|
* 17: DY0 18: DX0
|
|
|
|
* 19: DY1 20: DX1
|
|
|
|
* 21: DY2 22: DX2
|
2011-05-16 09:47:08 +00:00
|
|
|
* 23: DY3 24: DX3
|
|
|
|
* 25: DY4 26: DX4
|
2010-07-27 08:11:48 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
/* Set the lane override configuration */
|
2011-05-12 11:56:26 +00:00
|
|
|
|
|
|
|
/* REGLPTXSCPDAT4TO0DXDY */
|
2011-05-16 09:47:08 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, l, lptxscp_start, 17);
|
2010-07-27 08:11:48 +00:00
|
|
|
|
|
|
|
/* Enable lane override */
|
2011-05-12 11:56:26 +00:00
|
|
|
|
|
|
|
/* ENLPTXSCPDAT */
|
|
|
|
REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 1, 27, 27);
|
2010-07-27 08:11:48 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_cio_disable_lane_override(struct platform_device *dsidev)
|
2010-07-27 08:11:48 +00:00
|
|
|
{
|
|
|
|
/* Disable lane override */
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */
|
2010-07-27 08:11:48 +00:00
|
|
|
/* Reset the lane override configuration */
|
2011-05-12 11:56:26 +00:00
|
|
|
/* REGLPTXSCPDAT4TO0DXDY */
|
|
|
|
REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 0, 22, 17);
|
2010-07-27 08:11:48 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-10-07 10:59:22 +00:00
|
|
|
static int dsi_cio_wait_tx_clk_esc_reset(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2010-10-07 10:59:22 +00:00
|
|
|
int t;
|
|
|
|
int bits[3];
|
|
|
|
bool in_use[3];
|
|
|
|
|
|
|
|
if (dss_has_feature(FEAT_DSI_REVERSE_TXCLKESC)) {
|
|
|
|
bits[0] = 28;
|
|
|
|
bits[1] = 27;
|
|
|
|
bits[2] = 26;
|
|
|
|
} else {
|
|
|
|
bits[0] = 24;
|
|
|
|
bits[1] = 25;
|
|
|
|
bits[2] = 26;
|
|
|
|
}
|
|
|
|
|
|
|
|
in_use[0] = false;
|
|
|
|
in_use[1] = false;
|
|
|
|
in_use[2] = false;
|
|
|
|
|
|
|
|
if (dssdev->phy.dsi.clk_lane != 0)
|
|
|
|
in_use[dssdev->phy.dsi.clk_lane - 1] = true;
|
|
|
|
if (dssdev->phy.dsi.data1_lane != 0)
|
|
|
|
in_use[dssdev->phy.dsi.data1_lane - 1] = true;
|
|
|
|
if (dssdev->phy.dsi.data2_lane != 0)
|
|
|
|
in_use[dssdev->phy.dsi.data2_lane - 1] = true;
|
|
|
|
|
|
|
|
t = 100000;
|
|
|
|
while (true) {
|
|
|
|
u32 l;
|
|
|
|
int i;
|
|
|
|
int ok;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_DSIPHY_CFG5);
|
2010-10-07 10:59:22 +00:00
|
|
|
|
|
|
|
ok = 0;
|
|
|
|
for (i = 0; i < 3; ++i) {
|
|
|
|
if (!in_use[i] || (l & (1 << bits[i])))
|
|
|
|
ok++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ok == 3)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (--t == 0) {
|
|
|
|
for (i = 0; i < 3; ++i) {
|
|
|
|
if (!in_use[i] || (l & (1 << bits[i])))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
DSSERR("CIO TXCLKESC%d domain not coming " \
|
|
|
|
"out of reset\n", i);
|
|
|
|
}
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-10-06 12:18:13 +00:00
|
|
|
static int dsi_cio_init(struct omap_dss_device *dssdev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-04-15 08:58:41 +00:00
|
|
|
int r;
|
2011-05-16 09:47:08 +00:00
|
|
|
int num_data_lanes_dssdev = dsi_get_num_data_lanes_dssdev(dssdev);
|
2010-07-28 12:53:38 +00:00
|
|
|
u32 l;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-10-06 12:18:13 +00:00
|
|
|
DSSDBGF();
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->dsi_mux_pads)
|
|
|
|
dsi->dsi_mux_pads(true);
|
2010-07-30 08:57:57 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_enable_scp_clk(dsidev);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
/* A dummy read using the SCP interface to any DSIPHY register is
|
|
|
|
* required after DSIPHY reset to complete the reset of the DSI complex
|
|
|
|
* I/O. */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_read_reg(dsidev, DSI_DSIPHY_CFG5);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_DSIPHY_CFG5, 30, 1) != 1) {
|
2011-04-15 08:58:41 +00:00
|
|
|
DSSERR("CIO SCP Clock domain not coming out of reset.\n");
|
|
|
|
r = -EIO;
|
|
|
|
goto err_scp_clk_dom;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2010-10-06 12:18:13 +00:00
|
|
|
dsi_set_lane_config(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-07-28 12:53:38 +00:00
|
|
|
/* set TX STOP MODE timer to maximum for this operation */
|
2011-05-12 11:56:26 +00:00
|
|
|
l = dsi_read_reg(dsidev, DSI_TIMING1);
|
2010-07-28 12:53:38 +00:00
|
|
|
l = FLD_MOD(l, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
|
|
|
|
l = FLD_MOD(l, 1, 14, 14); /* STOP_STATE_X16_IO */
|
|
|
|
l = FLD_MOD(l, 1, 13, 13); /* STOP_STATE_X4_IO */
|
|
|
|
l = FLD_MOD(l, 0x1fff, 12, 0); /* STOP_STATE_COUNTER_IO */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_TIMING1, l);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->ulps_enabled) {
|
2011-05-16 09:47:08 +00:00
|
|
|
u32 lane_mask = DSI_CLK_P | DSI_DATA1_P | DSI_DATA2_P;
|
|
|
|
|
2011-04-15 08:58:41 +00:00
|
|
|
DSSDBG("manual ulps exit\n");
|
|
|
|
|
2010-07-28 12:53:38 +00:00
|
|
|
/* ULPS is exited by Mark-1 state for 1ms, followed by
|
|
|
|
* stop state. DSS HW cannot do this via the normal
|
|
|
|
* ULPS exit sequence, as after reset the DSS HW thinks
|
|
|
|
* that we are not in ULPS mode, and refuses to send the
|
|
|
|
* sequence. So we need to send the ULPS exit sequence
|
|
|
|
* manually.
|
|
|
|
*/
|
|
|
|
|
2011-05-16 09:47:08 +00:00
|
|
|
if (num_data_lanes_dssdev > 2)
|
|
|
|
lane_mask |= DSI_DATA3_P;
|
|
|
|
|
|
|
|
if (num_data_lanes_dssdev > 3)
|
|
|
|
lane_mask |= DSI_DATA4_P;
|
|
|
|
|
|
|
|
dsi_cio_enable_lane_override(dssdev, lane_mask);
|
2010-07-28 12:53:38 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_ON);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r)
|
2011-04-15 08:58:41 +00:00
|
|
|
goto err_cio_pwr;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_COMPLEXIO_CFG1, 29, 1) != 1) {
|
2011-04-15 08:58:41 +00:00
|
|
|
DSSERR("CIO PWR clock domain not coming out of reset.\n");
|
|
|
|
r = -ENODEV;
|
|
|
|
goto err_cio_pwr_dom;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_if_enable(dsidev, true);
|
|
|
|
dsi_if_enable(dsidev, false);
|
|
|
|
REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-10-07 10:59:22 +00:00
|
|
|
r = dsi_cio_wait_tx_clk_esc_reset(dssdev);
|
|
|
|
if (r)
|
|
|
|
goto err_tx_clk_esc_rst;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->ulps_enabled) {
|
2010-07-28 12:53:38 +00:00
|
|
|
/* Keep Mark-1 state for 1ms (as per DSI spec) */
|
|
|
|
ktime_t wait = ns_to_ktime(1000 * 1000);
|
|
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
|
|
schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
|
|
|
|
|
|
|
|
/* Disable the override. The lanes should be set to Mark-11
|
|
|
|
* state by the HW */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_cio_disable_lane_override(dsidev);
|
2010-07-28 12:53:38 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* FORCE_TX_STOP_MODE_IO */
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_TIMING1, 0, 15, 15);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_cio_timings(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->ulps_enabled = false;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBG("CIO init done\n");
|
2011-04-15 08:58:41 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
2010-10-07 10:59:22 +00:00
|
|
|
err_tx_clk_esc_rst:
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 20, 20); /* LP_CLK_ENABLE */
|
2011-04-15 08:58:41 +00:00
|
|
|
err_cio_pwr_dom:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_OFF);
|
2011-04-15 08:58:41 +00:00
|
|
|
err_cio_pwr:
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->ulps_enabled)
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_cio_disable_lane_override(dsidev);
|
2011-04-15 08:58:41 +00:00
|
|
|
err_scp_clk_dom:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_disable_scp_clk(dsidev);
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->dsi_mux_pads)
|
|
|
|
dsi->dsi_mux_pads(false);
|
2009-10-28 09:59:56 +00:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_cio_uninit(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_OFF);
|
|
|
|
dsi_disable_scp_clk(dsidev);
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->dsi_mux_pads)
|
|
|
|
dsi->dsi_mux_pads(false);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_config_tx_fifo(struct platform_device *dsidev,
|
|
|
|
enum fifo_size size1, enum fifo_size size2,
|
2009-10-28 09:59:56 +00:00
|
|
|
enum fifo_size size3, enum fifo_size size4)
|
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 r = 0;
|
|
|
|
int add = 0;
|
|
|
|
int i;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vc[0].fifo_size = size1;
|
|
|
|
dsi->vc[1].fifo_size = size2;
|
|
|
|
dsi->vc[2].fifo_size = size3;
|
|
|
|
dsi->vc[3].fifo_size = size4;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
|
|
u8 v;
|
2011-05-12 11:56:27 +00:00
|
|
|
int size = dsi->vc[i].fifo_size;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
if (add + size > 4) {
|
|
|
|
DSSERR("Illegal FIFO configuration\n");
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
|
|
|
|
v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
|
|
|
|
r |= v << (8 * i);
|
|
|
|
/*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */
|
|
|
|
add += size;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_TX_FIFO_VC_SIZE, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_config_rx_fifo(struct platform_device *dsidev,
|
|
|
|
enum fifo_size size1, enum fifo_size size2,
|
2009-10-28 09:59:56 +00:00
|
|
|
enum fifo_size size3, enum fifo_size size4)
|
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 r = 0;
|
|
|
|
int add = 0;
|
|
|
|
int i;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vc[0].fifo_size = size1;
|
|
|
|
dsi->vc[1].fifo_size = size2;
|
|
|
|
dsi->vc[2].fifo_size = size3;
|
|
|
|
dsi->vc[3].fifo_size = size4;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
|
|
u8 v;
|
2011-05-12 11:56:27 +00:00
|
|
|
int size = dsi->vc[i].fifo_size;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
if (add + size > 4) {
|
|
|
|
DSSERR("Illegal FIFO configuration\n");
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
|
|
|
|
v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
|
|
|
|
r |= v << (8 * i);
|
|
|
|
/*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */
|
|
|
|
add += size;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_RX_FIFO_VC_SIZE, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_force_tx_stop_mode_io(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
u32 r;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_TIMING1);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_TIMING1, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_TIMING1, 15, 0) != 0) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("TX_STOP bit not going down\n");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static bool dsi_vc_is_enabled(struct platform_device *dsidev, int channel)
|
2011-03-23 09:59:34 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
return REG_GET(dsidev, DSI_VC_CTRL(channel), 0, 0);
|
2011-03-23 09:59:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi_packet_sent_handler_vp(void *data, u32 mask)
|
|
|
|
{
|
2011-05-12 11:56:28 +00:00
|
|
|
struct dsi_packet_sent_handler_data *vp_data =
|
|
|
|
(struct dsi_packet_sent_handler_data *) data;
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(vp_data->dsidev);
|
2011-05-12 11:56:27 +00:00
|
|
|
const int channel = dsi->update_channel;
|
|
|
|
u8 bit = dsi->te_enabled ? 30 : 31;
|
2011-03-23 09:59:34 +00:00
|
|
|
|
2011-05-12 11:56:28 +00:00
|
|
|
if (REG_GET(vp_data->dsidev, DSI_VC_TE(channel), bit, bit) == 0)
|
|
|
|
complete(vp_data->completion);
|
2011-03-23 09:59:34 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_sync_vc_vp(struct platform_device *dsidev, int channel)
|
2011-03-23 09:59:34 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-05-12 11:56:28 +00:00
|
|
|
DECLARE_COMPLETION_ONSTACK(completion);
|
|
|
|
struct dsi_packet_sent_handler_data vp_data = { dsidev, &completion };
|
2011-03-23 09:59:34 +00:00
|
|
|
int r = 0;
|
|
|
|
u8 bit;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
bit = dsi->te_enabled ? 30 : 31;
|
2011-03-23 09:59:34 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_register_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp,
|
2011-05-12 11:56:28 +00:00
|
|
|
&vp_data, DSI_VC_IRQ_PACKET_SENT);
|
2011-03-23 09:59:34 +00:00
|
|
|
if (r)
|
|
|
|
goto err0;
|
|
|
|
|
|
|
|
/* Wait for completion only if TE_EN/TE_START is still set */
|
2011-05-12 11:56:26 +00:00
|
|
|
if (REG_GET(dsidev, DSI_VC_TE(channel), bit, bit)) {
|
2011-03-23 09:59:34 +00:00
|
|
|
if (wait_for_completion_timeout(&completion,
|
|
|
|
msecs_to_jiffies(10)) == 0) {
|
|
|
|
DSSERR("Failed to complete previous frame transfer\n");
|
|
|
|
r = -EIO;
|
|
|
|
goto err1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp,
|
2011-05-12 11:56:28 +00:00
|
|
|
&vp_data, DSI_VC_IRQ_PACKET_SENT);
|
2011-03-23 09:59:34 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
err1:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp,
|
2011-05-12 11:56:28 +00:00
|
|
|
&vp_data, DSI_VC_IRQ_PACKET_SENT);
|
2011-03-23 09:59:34 +00:00
|
|
|
err0:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi_packet_sent_handler_l4(void *data, u32 mask)
|
|
|
|
{
|
2011-05-12 11:56:28 +00:00
|
|
|
struct dsi_packet_sent_handler_data *l4_data =
|
|
|
|
(struct dsi_packet_sent_handler_data *) data;
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(l4_data->dsidev);
|
2011-05-12 11:56:27 +00:00
|
|
|
const int channel = dsi->update_channel;
|
2011-03-23 09:59:34 +00:00
|
|
|
|
2011-05-12 11:56:28 +00:00
|
|
|
if (REG_GET(l4_data->dsidev, DSI_VC_CTRL(channel), 5, 5) == 0)
|
|
|
|
complete(l4_data->completion);
|
2011-03-23 09:59:34 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_sync_vc_l4(struct platform_device *dsidev, int channel)
|
2011-03-23 09:59:34 +00:00
|
|
|
{
|
|
|
|
DECLARE_COMPLETION_ONSTACK(completion);
|
2011-05-12 11:56:28 +00:00
|
|
|
struct dsi_packet_sent_handler_data l4_data = { dsidev, &completion };
|
|
|
|
int r = 0;
|
2011-03-23 09:59:34 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_register_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4,
|
2011-05-12 11:56:28 +00:00
|
|
|
&l4_data, DSI_VC_IRQ_PACKET_SENT);
|
2011-03-23 09:59:34 +00:00
|
|
|
if (r)
|
|
|
|
goto err0;
|
|
|
|
|
|
|
|
/* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */
|
2011-05-12 11:56:26 +00:00
|
|
|
if (REG_GET(dsidev, DSI_VC_CTRL(channel), 5, 5)) {
|
2011-03-23 09:59:34 +00:00
|
|
|
if (wait_for_completion_timeout(&completion,
|
|
|
|
msecs_to_jiffies(10)) == 0) {
|
|
|
|
DSSERR("Failed to complete previous l4 transfer\n");
|
|
|
|
r = -EIO;
|
|
|
|
goto err1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4,
|
2011-05-12 11:56:28 +00:00
|
|
|
&l4_data, DSI_VC_IRQ_PACKET_SENT);
|
2011-03-23 09:59:34 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
err1:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4,
|
2011-05-12 11:56:28 +00:00
|
|
|
&l4_data, DSI_VC_IRQ_PACKET_SENT);
|
2011-03-23 09:59:34 +00:00
|
|
|
err0:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_sync_vc(struct platform_device *dsidev, int channel)
|
2011-03-23 09:59:34 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
WARN_ON(!dsi_bus_is_locked(dsidev));
|
2011-03-23 09:59:34 +00:00
|
|
|
|
|
|
|
WARN_ON(in_interrupt());
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (!dsi_vc_is_enabled(dsidev, channel))
|
2011-03-23 09:59:34 +00:00
|
|
|
return 0;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
switch (dsi->vc[channel].mode) {
|
2011-03-23 09:59:34 +00:00
|
|
|
case DSI_VC_MODE_VP:
|
2011-05-12 11:56:26 +00:00
|
|
|
return dsi_sync_vc_vp(dsidev, channel);
|
2011-03-23 09:59:34 +00:00
|
|
|
case DSI_VC_MODE_L4:
|
2011-05-12 11:56:26 +00:00
|
|
|
return dsi_sync_vc_l4(dsidev, channel);
|
2011-03-23 09:59:34 +00:00
|
|
|
default:
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_vc_enable(struct platform_device *dsidev, int channel,
|
|
|
|
bool enable)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2010-01-11 14:12:31 +00:00
|
|
|
DSSDBG("dsi_vc_enable channel %d, enable %d\n",
|
|
|
|
channel, enable);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
enable = enable ? 1 : 0;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), enable, 0, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_VC_CTRL(channel),
|
|
|
|
0, enable) != enable) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("Failed to set dsi_vc_enable to %d\n", enable);
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_vc_initial_config(struct platform_device *dsidev, int channel)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
u32 r;
|
|
|
|
|
|
|
|
DSSDBGF("%d", channel);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_VC_CTRL(channel));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
if (FLD_GET(r, 15, 15)) /* VC_BUSY */
|
|
|
|
DSSERR("VC(%d) busy when trying to configure it!\n",
|
|
|
|
channel);
|
|
|
|
|
|
|
|
r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */
|
|
|
|
r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */
|
|
|
|
r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */
|
|
|
|
r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */
|
|
|
|
r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */
|
|
|
|
r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */
|
|
|
|
r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */
|
2011-03-22 11:33:36 +00:00
|
|
|
if (dss_has_feature(FEAT_DSI_VC_OCP_WIDTH))
|
|
|
|
r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */
|
|
|
|
r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VC_CTRL(channel), r);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_vc_config_l4(struct platform_device *dsidev, int channel)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
if (dsi->vc[channel].mode == DSI_VC_MODE_L4)
|
2010-04-30 08:24:33 +00:00
|
|
|
return 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBGF("%d", channel);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_sync_vc(dsidev, channel);
|
2011-03-23 09:59:34 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_enable(dsidev, channel, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-30 08:24:33 +00:00
|
|
|
/* VC_BUSY */
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_VC_CTRL(channel), 15, 0) != 0) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("vc(%d) busy when trying to config for L4\n", channel);
|
2010-04-30 08:24:33 +00:00
|
|
|
return -EIO;
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 0, 1, 1); /* SOURCE, 0 = L4 */
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-22 11:33:36 +00:00
|
|
|
/* DCS_CMD_ENABLE */
|
|
|
|
if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC))
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 0, 30, 30);
|
2011-03-22 11:33:36 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_enable(dsidev, channel, 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vc[channel].mode = DSI_VC_MODE_L4;
|
2010-04-30 08:24:33 +00:00
|
|
|
|
|
|
|
return 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_vc_config_vp(struct platform_device *dsidev, int channel)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
if (dsi->vc[channel].mode == DSI_VC_MODE_VP)
|
2010-04-30 08:24:33 +00:00
|
|
|
return 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBGF("%d", channel);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_sync_vc(dsidev, channel);
|
2011-03-23 09:59:34 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_enable(dsidev, channel, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-30 08:24:33 +00:00
|
|
|
/* VC_BUSY */
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_VC_CTRL(channel), 15, 0) != 0) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("vc(%d) busy when trying to config for VP\n", channel);
|
2010-04-30 08:24:33 +00:00
|
|
|
return -EIO;
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
/* SOURCE, 1 = video port */
|
|
|
|
REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 1, 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-22 11:33:36 +00:00
|
|
|
/* DCS_CMD_ENABLE */
|
|
|
|
if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC))
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 30, 30);
|
2011-03-22 11:33:36 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_enable(dsidev, channel, 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vc[channel].mode = DSI_VC_MODE_VP;
|
2010-04-30 08:24:33 +00:00
|
|
|
|
|
|
|
return 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
void omapdss_dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel,
|
|
|
|
bool enable)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
WARN_ON(!dsi_bus_is_locked(dsidev));
|
2010-01-12 14:00:30 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_enable(dsidev, channel, 0);
|
|
|
|
dsi_if_enable(dsidev, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), enable, 9, 9);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_enable(dsidev, channel, 1);
|
|
|
|
dsi_if_enable(dsidev, 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_force_tx_stop_mode_io(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
2010-01-12 14:00:30 +00:00
|
|
|
EXPORT_SYMBOL(omapdss_dsi_vc_enable_hs);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_vc_flush_long_data(struct platform_device *dsidev, int channel)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
while (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) {
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 val;
|
2011-05-12 11:56:26 +00:00
|
|
|
val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel));
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n",
|
|
|
|
(val >> 0) & 0xff,
|
|
|
|
(val >> 8) & 0xff,
|
|
|
|
(val >> 16) & 0xff,
|
|
|
|
(val >> 24) & 0xff);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi_show_rx_ack_with_err(u16 err)
|
|
|
|
{
|
|
|
|
DSSERR("\tACK with ERROR (%#x):\n", err);
|
|
|
|
if (err & (1 << 0))
|
|
|
|
DSSERR("\t\tSoT Error\n");
|
|
|
|
if (err & (1 << 1))
|
|
|
|
DSSERR("\t\tSoT Sync Error\n");
|
|
|
|
if (err & (1 << 2))
|
|
|
|
DSSERR("\t\tEoT Sync Error\n");
|
|
|
|
if (err & (1 << 3))
|
|
|
|
DSSERR("\t\tEscape Mode Entry Command Error\n");
|
|
|
|
if (err & (1 << 4))
|
|
|
|
DSSERR("\t\tLP Transmit Sync Error\n");
|
|
|
|
if (err & (1 << 5))
|
|
|
|
DSSERR("\t\tHS Receive Timeout Error\n");
|
|
|
|
if (err & (1 << 6))
|
|
|
|
DSSERR("\t\tFalse Control Error\n");
|
|
|
|
if (err & (1 << 7))
|
|
|
|
DSSERR("\t\t(reserved7)\n");
|
|
|
|
if (err & (1 << 8))
|
|
|
|
DSSERR("\t\tECC Error, single-bit (corrected)\n");
|
|
|
|
if (err & (1 << 9))
|
|
|
|
DSSERR("\t\tECC Error, multi-bit (not corrected)\n");
|
|
|
|
if (err & (1 << 10))
|
|
|
|
DSSERR("\t\tChecksum Error\n");
|
|
|
|
if (err & (1 << 11))
|
|
|
|
DSSERR("\t\tData type not recognized\n");
|
|
|
|
if (err & (1 << 12))
|
|
|
|
DSSERR("\t\tInvalid VC ID\n");
|
|
|
|
if (err & (1 << 13))
|
|
|
|
DSSERR("\t\tInvalid Transmission Length\n");
|
|
|
|
if (err & (1 << 14))
|
|
|
|
DSSERR("\t\t(reserved14)\n");
|
|
|
|
if (err & (1 << 15))
|
|
|
|
DSSERR("\t\tDSI Protocol Violation\n");
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static u16 dsi_vc_flush_receive_data(struct platform_device *dsidev,
|
|
|
|
int channel)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
/* RX_FIFO_NOT_EMPTY */
|
2011-05-12 11:56:26 +00:00
|
|
|
while (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) {
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 val;
|
|
|
|
u8 dt;
|
2011-05-12 11:56:26 +00:00
|
|
|
val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel));
|
2010-03-16 14:19:06 +00:00
|
|
|
DSSERR("\trawval %#08x\n", val);
|
2009-10-28 09:59:56 +00:00
|
|
|
dt = FLD_GET(val, 5, 0);
|
|
|
|
if (dt == DSI_DT_RX_ACK_WITH_ERR) {
|
|
|
|
u16 err = FLD_GET(val, 23, 8);
|
|
|
|
dsi_show_rx_ack_with_err(err);
|
|
|
|
} else if (dt == DSI_DT_RX_SHORT_READ_1) {
|
2010-03-16 14:19:06 +00:00
|
|
|
DSSERR("\tDCS short response, 1 byte: %#x\n",
|
2009-10-28 09:59:56 +00:00
|
|
|
FLD_GET(val, 23, 8));
|
|
|
|
} else if (dt == DSI_DT_RX_SHORT_READ_2) {
|
2010-03-16 14:19:06 +00:00
|
|
|
DSSERR("\tDCS short response, 2 byte: %#x\n",
|
2009-10-28 09:59:56 +00:00
|
|
|
FLD_GET(val, 23, 8));
|
|
|
|
} else if (dt == DSI_DT_RX_DCS_LONG_READ) {
|
2010-03-16 14:19:06 +00:00
|
|
|
DSSERR("\tDCS long response, len %d\n",
|
2009-10-28 09:59:56 +00:00
|
|
|
FLD_GET(val, 23, 8));
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_flush_long_data(dsidev, channel);
|
2009-10-28 09:59:56 +00:00
|
|
|
} else {
|
|
|
|
DSSERR("\tunknown datatype 0x%02x\n", dt);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_vc_send_bta(struct platform_device *dsidev, int channel)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
if (dsi->debug_write || dsi->debug_read)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("dsi_vc_send_bta %d\n", channel);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
WARN_ON(!dsi_bus_is_locked(dsidev));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
/* RX_FIFO_NOT_EMPTY */
|
|
|
|
if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("rx fifo not empty when sending BTA, dumping data:\n");
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_flush_receive_data(dsidev, channel);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_send_bta_sync(struct omap_dss_device *dssdev, int channel)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-03-02 12:48:41 +00:00
|
|
|
DECLARE_COMPLETION_ONSTACK(completion);
|
2009-10-28 09:59:56 +00:00
|
|
|
int r = 0;
|
|
|
|
u32 err;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_register_isr_vc(dsidev, channel, dsi_completion_handler,
|
2011-03-02 12:48:41 +00:00
|
|
|
&completion, DSI_VC_IRQ_BTA);
|
|
|
|
if (r)
|
|
|
|
goto err0;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_register_isr(dsidev, dsi_completion_handler, &completion,
|
2010-10-08 13:15:25 +00:00
|
|
|
DSI_IRQ_ERROR_MASK);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r)
|
2011-03-02 12:48:41 +00:00
|
|
|
goto err1;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_vc_send_bta(dsidev, channel);
|
2010-10-08 13:15:25 +00:00
|
|
|
if (r)
|
|
|
|
goto err2;
|
|
|
|
|
2011-03-02 12:48:41 +00:00
|
|
|
if (wait_for_completion_timeout(&completion,
|
2009-10-28 09:59:56 +00:00
|
|
|
msecs_to_jiffies(500)) == 0) {
|
|
|
|
DSSERR("Failed to receive BTA\n");
|
|
|
|
r = -EIO;
|
2010-10-08 13:15:25 +00:00
|
|
|
goto err2;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
err = dsi_get_errors(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (err) {
|
|
|
|
DSSERR("Error while sending BTA: %x\n", err);
|
|
|
|
r = -EIO;
|
2010-10-08 13:15:25 +00:00
|
|
|
goto err2;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
2010-10-08 13:15:25 +00:00
|
|
|
err2:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_unregister_isr(dsidev, dsi_completion_handler, &completion,
|
2010-10-08 13:15:25 +00:00
|
|
|
DSI_IRQ_ERROR_MASK);
|
2011-03-02 12:48:41 +00:00
|
|
|
err1:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_unregister_isr_vc(dsidev, channel, dsi_completion_handler,
|
2011-03-02 12:48:41 +00:00
|
|
|
&completion, DSI_VC_IRQ_BTA);
|
|
|
|
err0:
|
2009-10-28 09:59:56 +00:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_send_bta_sync);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline void dsi_vc_write_long_header(struct platform_device *dsidev,
|
|
|
|
int channel, u8 data_type, u16 len, u8 ecc)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 val;
|
|
|
|
u8 data_id;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
WARN_ON(!dsi_bus_is_locked(dsidev));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
data_id = data_type | dsi->vc[channel].vc_id << 6;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) |
|
|
|
|
FLD_VAL(ecc, 31, 24);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VC_LONG_PACKET_HEADER(channel), val);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static inline void dsi_vc_write_long_payload(struct platform_device *dsidev,
|
|
|
|
int channel, u8 b1, u8 b2, u8 b3, u8 b4)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
u32 val;
|
|
|
|
|
|
|
|
val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0;
|
|
|
|
|
|
|
|
/* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n",
|
|
|
|
b1, b2, b3, b4, val); */
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VC_LONG_PACKET_PAYLOAD(channel), val);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_vc_send_long(struct platform_device *dsidev, int channel,
|
|
|
|
u8 data_type, u8 *data, u16 len, u8 ecc)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
/*u32 val; */
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int i;
|
|
|
|
u8 *p;
|
|
|
|
int r = 0;
|
|
|
|
u8 b1, b2, b3, b4;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_write)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("dsi_vc_send_long, %d bytes\n", len);
|
|
|
|
|
|
|
|
/* len + header */
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->vc[channel].fifo_size * 32 * 4 < len + 4) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("unable to send long packet: packet too long.\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_config_l4(dsidev, channel);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_write_long_header(dsidev, channel, data_type, len, ecc);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
p = data;
|
|
|
|
for (i = 0; i < len >> 2; i++) {
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_write)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("\tsending full packet %d\n", i);
|
|
|
|
|
|
|
|
b1 = *p++;
|
|
|
|
b2 = *p++;
|
|
|
|
b3 = *p++;
|
|
|
|
b4 = *p++;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_write_long_payload(dsidev, channel, b1, b2, b3, b4);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
i = len % 4;
|
|
|
|
if (i) {
|
|
|
|
b1 = 0; b2 = 0; b3 = 0;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_write)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("\tsending remainder bytes %d\n", i);
|
|
|
|
|
|
|
|
switch (i) {
|
|
|
|
case 3:
|
|
|
|
b1 = *p++;
|
|
|
|
b2 = *p++;
|
|
|
|
b3 = *p++;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
b1 = *p++;
|
|
|
|
b2 = *p++;
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
b1 = *p++;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_write_long_payload(dsidev, channel, b1, b2, b3, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_vc_send_short(struct platform_device *dsidev, int channel,
|
|
|
|
u8 data_type, u16 data, u8 ecc)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 r;
|
|
|
|
u8 data_id;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
WARN_ON(!dsi_bus_is_locked(dsidev));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_write)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
|
|
|
|
channel,
|
|
|
|
data_type, data & 0xff, (data >> 8) & 0xff);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_config_l4(dsidev, channel);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (FLD_GET(dsi_read_reg(dsidev, DSI_VC_CTRL(channel)), 16, 16)) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("ERROR FIFO FULL, aborting transfer\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
data_id = data_type | dsi->vc[channel].vc_id << 6;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
r = (data_id << 0) | (data << 8) | (ecc << 24);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel), r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_send_null(struct omap_dss_device *dssdev, int channel)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
u8 nullpkg[] = {0, 0, 0, 0};
|
2011-05-12 11:56:26 +00:00
|
|
|
|
|
|
|
return dsi_vc_send_long(dsidev, channel, DSI_DT_NULL_PACKET, nullpkg,
|
|
|
|
4, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_send_null);
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel,
|
|
|
|
u8 *data, int len)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int r;
|
|
|
|
|
|
|
|
BUG_ON(len == 0);
|
|
|
|
|
|
|
|
if (len == 1) {
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_vc_send_short(dsidev, channel, DSI_DT_DCS_SHORT_WRITE_0,
|
2009-10-28 09:59:56 +00:00
|
|
|
data[0], 0);
|
|
|
|
} else if (len == 2) {
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_vc_send_short(dsidev, channel, DSI_DT_DCS_SHORT_WRITE_1,
|
2009-10-28 09:59:56 +00:00
|
|
|
data[0] | (data[1] << 8), 0);
|
|
|
|
} else {
|
|
|
|
/* 0x39 = DCS Long Write */
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_vc_send_long(dsidev, channel, DSI_DT_DCS_LONG_WRITE,
|
2009-10-28 09:59:56 +00:00
|
|
|
data, len, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_dcs_write_nosync);
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data,
|
|
|
|
int len)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
r = dsi_vc_dcs_write_nosync(dssdev, channel, data, len);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r)
|
2010-02-26 09:32:56 +00:00
|
|
|
goto err;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
r = dsi_vc_send_bta_sync(dssdev, channel);
|
2010-02-26 09:32:56 +00:00
|
|
|
if (r)
|
|
|
|
goto err;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
/* RX_FIFO_NOT_EMPTY */
|
|
|
|
if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) {
|
2010-04-09 10:20:57 +00:00
|
|
|
DSSERR("rx fifo not empty after write, dumping data:\n");
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_flush_receive_data(dsidev, channel);
|
2010-04-09 10:20:57 +00:00
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
2010-02-26 09:32:56 +00:00
|
|
|
return 0;
|
|
|
|
err:
|
|
|
|
DSSERR("dsi_vc_dcs_write(ch %d, cmd 0x%02x, len %d) failed\n",
|
|
|
|
channel, data[0], len);
|
2009-10-28 09:59:56 +00:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_dcs_write);
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_dcs_write_0(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd)
|
2009-12-16 12:53:15 +00:00
|
|
|
{
|
2011-05-12 11:56:24 +00:00
|
|
|
return dsi_vc_dcs_write(dssdev, channel, &dcs_cmd, 1);
|
2009-12-16 12:53:15 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_dcs_write_0);
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_dcs_write_1(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
|
|
|
|
u8 param)
|
2009-12-16 12:53:15 +00:00
|
|
|
{
|
|
|
|
u8 buf[2];
|
|
|
|
buf[0] = dcs_cmd;
|
|
|
|
buf[1] = param;
|
2011-05-12 11:56:24 +00:00
|
|
|
return dsi_vc_dcs_write(dssdev, channel, buf, 2);
|
2009-12-16 12:53:15 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_dcs_write_1);
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
|
|
|
|
u8 *buf, int buflen)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 val;
|
|
|
|
u8 dt;
|
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_read)
|
2009-12-03 11:38:04 +00:00
|
|
|
DSSDBG("dsi_vc_dcs_read(ch%d, dcs_cmd %x)\n", channel, dcs_cmd);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_vc_send_short(dsidev, channel, DSI_DT_DCS_READ, dcs_cmd, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r)
|
2010-02-26 09:32:56 +00:00
|
|
|
goto err;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
r = dsi_vc_send_bta_sync(dssdev, channel);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r)
|
2010-02-26 09:32:56 +00:00
|
|
|
goto err;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* RX_FIFO_NOT_EMPTY */
|
2011-05-12 11:56:26 +00:00
|
|
|
if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20) == 0) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("RX fifo empty when trying to read.\n");
|
2010-02-26 09:32:56 +00:00
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel));
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_read)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("\theader: %08x\n", val);
|
|
|
|
dt = FLD_GET(val, 5, 0);
|
|
|
|
if (dt == DSI_DT_RX_ACK_WITH_ERR) {
|
|
|
|
u16 err = FLD_GET(val, 23, 8);
|
|
|
|
dsi_show_rx_ack_with_err(err);
|
2010-02-26 09:32:56 +00:00
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
} else if (dt == DSI_DT_RX_SHORT_READ_1) {
|
|
|
|
u8 data = FLD_GET(val, 15, 8);
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_read)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("\tDCS short response, 1 byte: %02x\n", data);
|
|
|
|
|
2010-02-26 09:32:56 +00:00
|
|
|
if (buflen < 1) {
|
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
buf[0] = data;
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
} else if (dt == DSI_DT_RX_SHORT_READ_2) {
|
|
|
|
u16 data = FLD_GET(val, 23, 8);
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_read)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("\tDCS short response, 2 byte: %04x\n", data);
|
|
|
|
|
2010-02-26 09:32:56 +00:00
|
|
|
if (buflen < 2) {
|
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
buf[0] = data & 0xff;
|
|
|
|
buf[1] = (data >> 8) & 0xff;
|
|
|
|
|
|
|
|
return 2;
|
|
|
|
} else if (dt == DSI_DT_RX_DCS_LONG_READ) {
|
|
|
|
int w;
|
|
|
|
int len = FLD_GET(val, 23, 8);
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_read)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("\tDCS long response, len %d\n", len);
|
|
|
|
|
2010-02-26 09:32:56 +00:00
|
|
|
if (len > buflen) {
|
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* two byte checksum ends the packet, not included in len */
|
|
|
|
for (w = 0; w < len + 2;) {
|
|
|
|
int b;
|
2011-05-12 11:56:26 +00:00
|
|
|
val = dsi_read_reg(dsidev,
|
|
|
|
DSI_VC_SHORT_PACKET_HEADER(channel));
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->debug_read)
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("\t\t%02x %02x %02x %02x\n",
|
|
|
|
(val >> 0) & 0xff,
|
|
|
|
(val >> 8) & 0xff,
|
|
|
|
(val >> 16) & 0xff,
|
|
|
|
(val >> 24) & 0xff);
|
|
|
|
|
|
|
|
for (b = 0; b < 4; ++b) {
|
|
|
|
if (w < len)
|
|
|
|
buf[w] = (val >> (b * 8)) & 0xff;
|
|
|
|
/* we discard the 2 byte checksum */
|
|
|
|
++w;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return len;
|
|
|
|
} else {
|
|
|
|
DSSERR("\tunknown datatype 0x%02x\n", dt);
|
2010-02-26 09:32:56 +00:00
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
2010-02-26 09:32:56 +00:00
|
|
|
|
|
|
|
BUG();
|
|
|
|
err:
|
|
|
|
DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n",
|
|
|
|
channel, dcs_cmd);
|
|
|
|
return r;
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_dcs_read);
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_dcs_read_1(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
|
|
|
|
u8 *data)
|
2009-12-16 12:53:15 +00:00
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
r = dsi_vc_dcs_read(dssdev, channel, dcs_cmd, data, 1);
|
2009-12-16 12:53:15 +00:00
|
|
|
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
if (r != 1)
|
|
|
|
return -EIO;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_dcs_read_1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_dcs_read_2(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
|
|
|
|
u8 *data1, u8 *data2)
|
2010-02-25 09:38:13 +00:00
|
|
|
{
|
2010-06-09 12:19:29 +00:00
|
|
|
u8 buf[2];
|
2010-02-25 09:38:13 +00:00
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
r = dsi_vc_dcs_read(dssdev, channel, dcs_cmd, buf, 2);
|
2010-02-25 09:38:13 +00:00
|
|
|
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
if (r != 2)
|
|
|
|
return -EIO;
|
|
|
|
|
2010-06-09 12:19:29 +00:00
|
|
|
*data1 = buf[0];
|
|
|
|
*data2 = buf[1];
|
|
|
|
|
2010-02-25 09:38:13 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_dcs_read_2);
|
|
|
|
|
2011-05-12 11:56:24 +00:00
|
|
|
int dsi_vc_set_max_rx_packet_size(struct omap_dss_device *dssdev, int channel,
|
|
|
|
u16 len)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
|
|
|
|
return dsi_vc_send_short(dsidev, channel, DSI_DT_SET_MAX_RET_PKG_SIZE,
|
2009-10-28 09:59:56 +00:00
|
|
|
len, 0);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(dsi_vc_set_max_rx_packet_size);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static int dsi_enter_ulps(struct platform_device *dsidev)
|
2010-07-28 12:53:38 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2010-07-28 12:53:38 +00:00
|
|
|
DECLARE_COMPLETION_ONSTACK(completion);
|
|
|
|
int r;
|
|
|
|
|
|
|
|
DSSDBGF();
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
WARN_ON(!dsi_bus_is_locked(dsidev));
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
WARN_ON(dsi->ulps_enabled);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->ulps_enabled)
|
2010-07-28 12:53:38 +00:00
|
|
|
return 0;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (REG_GET(dsidev, DSI_CLK_CTRL, 13, 13)) {
|
2010-07-28 12:53:38 +00:00
|
|
|
DSSERR("DDR_CLK_ALWAYS_ON enabled when entering ULPS\n");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_sync_vc(dsidev, 0);
|
|
|
|
dsi_sync_vc(dsidev, 1);
|
|
|
|
dsi_sync_vc(dsidev, 2);
|
|
|
|
dsi_sync_vc(dsidev, 3);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_force_tx_stop_mode_io(dsidev);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_enable(dsidev, 0, false);
|
|
|
|
dsi_vc_enable(dsidev, 1, false);
|
|
|
|
dsi_vc_enable(dsidev, 2, false);
|
|
|
|
dsi_vc_enable(dsidev, 3, false);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (REG_GET(dsidev, DSI_COMPLEXIO_CFG2, 16, 16)) { /* HS_BUSY */
|
2010-07-28 12:53:38 +00:00
|
|
|
DSSERR("HS busy when enabling ULPS\n");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
if (REG_GET(dsidev, DSI_COMPLEXIO_CFG2, 17, 17)) { /* LP_BUSY */
|
2010-07-28 12:53:38 +00:00
|
|
|
DSSERR("LP busy when enabling ULPS\n");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_register_isr_cio(dsidev, dsi_completion_handler, &completion,
|
2010-07-28 12:53:38 +00:00
|
|
|
DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
|
|
|
|
if (r)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
/* Assert TxRequestEsc for data lanes and TxUlpsClk for clk lane */
|
|
|
|
/* LANEx_ULPS_SIG2 */
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, (1 << 0) | (1 << 1) | (1 << 2),
|
|
|
|
7, 5);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
|
|
|
if (wait_for_completion_timeout(&completion,
|
|
|
|
msecs_to_jiffies(1000)) == 0) {
|
|
|
|
DSSERR("ULPS enable timeout\n");
|
|
|
|
r = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_unregister_isr_cio(dsidev, dsi_completion_handler, &completion,
|
2010-07-28 12:53:38 +00:00
|
|
|
DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
|
|
|
|
|
2011-05-31 13:55:47 +00:00
|
|
|
/* Reset LANEx_ULPS_SIG2 */
|
|
|
|
REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, (0 << 0) | (0 << 1) | (0 << 2),
|
|
|
|
7, 5);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_ULPS);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_if_enable(dsidev, false);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->ulps_enabled = true;
|
2010-07-28 12:53:38 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_unregister_isr_cio(dsidev, dsi_completion_handler, &completion,
|
2010-07-28 12:53:38 +00:00
|
|
|
DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_set_lp_rx_timeout(struct platform_device *dsidev,
|
|
|
|
unsigned ticks, bool x4, bool x16)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
unsigned long fck;
|
2010-04-12 07:40:12 +00:00
|
|
|
unsigned long total_ticks;
|
|
|
|
u32 r;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
BUG_ON(ticks > 0x1fff);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
/* ticks in DSI_FCK */
|
2011-05-12 11:56:26 +00:00
|
|
|
fck = dsi_fclk_rate(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_TIMING2);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */
|
2010-04-12 07:40:12 +00:00
|
|
|
r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */
|
|
|
|
r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_TIMING2, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
|
|
|
|
|
|
|
|
DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n",
|
|
|
|
total_ticks,
|
|
|
|
ticks, x4 ? " x4" : "", x16 ? " x16" : "",
|
|
|
|
(total_ticks * 1000) / (fck / 1000 / 1000));
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_set_ta_timeout(struct platform_device *dsidev, unsigned ticks,
|
|
|
|
bool x8, bool x16)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
unsigned long fck;
|
2010-04-12 07:40:12 +00:00
|
|
|
unsigned long total_ticks;
|
|
|
|
u32 r;
|
|
|
|
|
|
|
|
BUG_ON(ticks > 0x1fff);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* ticks in DSI_FCK */
|
2011-05-12 11:56:26 +00:00
|
|
|
fck = dsi_fclk_rate(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_TIMING1);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, 1, 31, 31); /* TA_TO */
|
2010-04-12 07:40:12 +00:00
|
|
|
r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */
|
|
|
|
r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_TIMING1, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1);
|
|
|
|
|
|
|
|
DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n",
|
|
|
|
total_ticks,
|
|
|
|
ticks, x8 ? " x8" : "", x16 ? " x16" : "",
|
|
|
|
(total_ticks * 1000) / (fck / 1000 / 1000));
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_set_stop_state_counter(struct platform_device *dsidev,
|
|
|
|
unsigned ticks, bool x4, bool x16)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
unsigned long fck;
|
2010-04-12 07:40:12 +00:00
|
|
|
unsigned long total_ticks;
|
|
|
|
u32 r;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
BUG_ON(ticks > 0x1fff);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
/* ticks in DSI_FCK */
|
2011-05-12 11:56:26 +00:00
|
|
|
fck = dsi_fclk_rate(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_TIMING1);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
|
2010-04-12 07:40:12 +00:00
|
|
|
r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */
|
|
|
|
r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_TIMING1, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
|
|
|
|
|
|
|
|
DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n",
|
|
|
|
total_ticks,
|
|
|
|
ticks, x4 ? " x4" : "", x16 ? " x16" : "",
|
|
|
|
(total_ticks * 1000) / (fck / 1000 / 1000));
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_set_hs_tx_timeout(struct platform_device *dsidev,
|
|
|
|
unsigned ticks, bool x4, bool x16)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
|
|
|
unsigned long fck;
|
2010-04-12 07:40:12 +00:00
|
|
|
unsigned long total_ticks;
|
|
|
|
u32 r;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
BUG_ON(ticks > 0x1fff);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
/* ticks in TxByteClkHS */
|
2011-05-12 11:56:26 +00:00
|
|
|
fck = dsi_get_txbyteclkhs(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_TIMING2);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */
|
2010-04-12 07:40:12 +00:00
|
|
|
r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */
|
|
|
|
r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_TIMING2, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-04-12 07:40:12 +00:00
|
|
|
total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
|
|
|
|
|
|
|
|
DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n",
|
|
|
|
total_ticks,
|
|
|
|
ticks, x4 ? " x4" : "", x16 ? " x16" : "",
|
|
|
|
(total_ticks * 1000) / (fck / 1000 / 1000));
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
static int dsi_proto_config(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 r;
|
|
|
|
int buswidth = 0;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_config_tx_fifo(dsidev, DSI_FIFO_SIZE_32,
|
2009-12-16 14:49:03 +00:00
|
|
|
DSI_FIFO_SIZE_32,
|
|
|
|
DSI_FIFO_SIZE_32,
|
|
|
|
DSI_FIFO_SIZE_32);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_config_rx_fifo(dsidev, DSI_FIFO_SIZE_32,
|
2009-12-16 14:49:03 +00:00
|
|
|
DSI_FIFO_SIZE_32,
|
|
|
|
DSI_FIFO_SIZE_32,
|
|
|
|
DSI_FIFO_SIZE_32);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* XXX what values for the timeouts? */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_set_stop_state_counter(dsidev, 0x1000, false, false);
|
|
|
|
dsi_set_ta_timeout(dsidev, 0x1fff, true, true);
|
|
|
|
dsi_set_lp_rx_timeout(dsidev, 0x1fff, true, true);
|
|
|
|
dsi_set_hs_tx_timeout(dsidev, 0x1fff, true, true);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
switch (dssdev->ctrl.pixel_size) {
|
|
|
|
case 16:
|
|
|
|
buswidth = 0;
|
|
|
|
break;
|
|
|
|
case 18:
|
|
|
|
buswidth = 1;
|
|
|
|
break;
|
|
|
|
case 24:
|
|
|
|
buswidth = 2;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_CTRL);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */
|
|
|
|
r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */
|
|
|
|
r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */
|
|
|
|
r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/
|
|
|
|
r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */
|
|
|
|
r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */
|
|
|
|
r = FLD_MOD(r, 2, 13, 12); /* LINE_BUFFER, 2 lines */
|
|
|
|
r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */
|
|
|
|
r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */
|
2011-03-22 11:33:36 +00:00
|
|
|
if (!dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) {
|
|
|
|
r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */
|
|
|
|
/* DCS_CMD_CODE, 1=start, 0=continue */
|
|
|
|
r = FLD_MOD(r, 0, 25, 25);
|
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_CTRL, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_initial_config(dsidev, 0);
|
|
|
|
dsi_vc_initial_config(dsidev, 1);
|
|
|
|
dsi_vc_initial_config(dsidev, 2);
|
|
|
|
dsi_vc_initial_config(dsidev, 3);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi_proto_timings(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
unsigned tlpx, tclk_zero, tclk_prepare, tclk_trail;
|
|
|
|
unsigned tclk_pre, tclk_post;
|
|
|
|
unsigned ths_prepare, ths_prepare_ths_zero, ths_zero;
|
|
|
|
unsigned ths_trail, ths_exit;
|
|
|
|
unsigned ddr_clk_pre, ddr_clk_post;
|
|
|
|
unsigned enter_hs_mode_lat, exit_hs_mode_lat;
|
|
|
|
unsigned ths_eot;
|
|
|
|
u32 r;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG0);
|
2009-10-28 09:59:56 +00:00
|
|
|
ths_prepare = FLD_GET(r, 31, 24);
|
|
|
|
ths_prepare_ths_zero = FLD_GET(r, 23, 16);
|
|
|
|
ths_zero = ths_prepare_ths_zero - ths_prepare;
|
|
|
|
ths_trail = FLD_GET(r, 15, 8);
|
|
|
|
ths_exit = FLD_GET(r, 7, 0);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG1);
|
2009-10-28 09:59:56 +00:00
|
|
|
tlpx = FLD_GET(r, 22, 16) * 2;
|
|
|
|
tclk_trail = FLD_GET(r, 15, 8);
|
|
|
|
tclk_zero = FLD_GET(r, 7, 0);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG2);
|
2009-10-28 09:59:56 +00:00
|
|
|
tclk_prepare = FLD_GET(r, 7, 0);
|
|
|
|
|
|
|
|
/* min 8*UI */
|
|
|
|
tclk_pre = 20;
|
|
|
|
/* min 60ns + 52*UI */
|
2011-05-12 11:56:26 +00:00
|
|
|
tclk_post = ns2ddr(dsidev, 60) + 26;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-16 09:47:08 +00:00
|
|
|
ths_eot = DIV_ROUND_UP(4, dsi_get_num_data_lanes_dssdev(dssdev));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
|
|
|
|
4);
|
|
|
|
ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot;
|
|
|
|
|
|
|
|
BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
|
|
|
|
BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_read_reg(dsidev, DSI_CLK_TIMING);
|
2009-10-28 09:59:56 +00:00
|
|
|
r = FLD_MOD(r, ddr_clk_pre, 15, 8);
|
|
|
|
r = FLD_MOD(r, ddr_clk_post, 7, 0);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_CLK_TIMING, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n",
|
|
|
|
ddr_clk_pre,
|
|
|
|
ddr_clk_post);
|
|
|
|
|
|
|
|
enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
|
|
|
|
DIV_ROUND_UP(ths_prepare, 4) +
|
|
|
|
DIV_ROUND_UP(ths_zero + 3, 4);
|
|
|
|
|
|
|
|
exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
|
|
|
|
|
|
|
|
r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
|
|
|
|
FLD_VAL(exit_hs_mode_lat, 15, 0);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VM_TIMING7, r);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n",
|
|
|
|
enter_hs_mode_lat, exit_hs_mode_lat);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#define DSI_DECL_VARS \
|
|
|
|
int __dsi_cb = 0; u32 __dsi_cv = 0;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
#define DSI_FLUSH(dsidev, ch) \
|
2009-10-28 09:59:56 +00:00
|
|
|
if (__dsi_cb > 0) { \
|
|
|
|
/*DSSDBG("sending long packet %#010x\n", __dsi_cv);*/ \
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VC_LONG_PACKET_PAYLOAD(ch), __dsi_cv); \
|
2009-10-28 09:59:56 +00:00
|
|
|
__dsi_cb = __dsi_cv = 0; \
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
#define DSI_PUSH(dsidev, ch, data) \
|
2009-10-28 09:59:56 +00:00
|
|
|
do { \
|
|
|
|
__dsi_cv |= (data) << (__dsi_cb * 8); \
|
|
|
|
/*DSSDBG("cv = %#010x, cb = %d\n", __dsi_cv, __dsi_cb);*/ \
|
|
|
|
if (++__dsi_cb > 3) \
|
2011-05-12 11:56:26 +00:00
|
|
|
DSI_FLUSH(dsidev, ch); \
|
2009-10-28 09:59:56 +00:00
|
|
|
} while (0)
|
|
|
|
|
|
|
|
static int dsi_update_screen_l4(struct omap_dss_device *dssdev,
|
|
|
|
int x, int y, int w, int h)
|
|
|
|
{
|
|
|
|
/* Note: supports only 24bit colors in 32bit container */
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int first = 1;
|
|
|
|
int fifo_stalls = 0;
|
|
|
|
int max_dsi_packet_size;
|
|
|
|
int max_data_per_packet;
|
|
|
|
int max_pixels_per_packet;
|
|
|
|
int pixels_left;
|
|
|
|
int bytespp = dssdev->ctrl.pixel_size / 8;
|
|
|
|
int scr_width;
|
|
|
|
u32 __iomem *data;
|
|
|
|
int start_offset;
|
|
|
|
int horiz_inc;
|
|
|
|
int current_x;
|
|
|
|
struct omap_overlay *ovl;
|
|
|
|
|
|
|
|
debug_irq = 0;
|
|
|
|
|
|
|
|
DSSDBG("dsi_update_screen_l4 (%d,%d %dx%d)\n",
|
|
|
|
x, y, w, h);
|
|
|
|
|
|
|
|
ovl = dssdev->manager->overlays[0];
|
|
|
|
|
|
|
|
if (ovl->info.color_mode != OMAP_DSS_COLOR_RGB24U)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (dssdev->ctrl.pixel_size != 24)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
scr_width = ovl->info.screen_width;
|
|
|
|
data = ovl->info.vaddr;
|
|
|
|
|
|
|
|
start_offset = scr_width * y + x;
|
|
|
|
horiz_inc = scr_width - w;
|
|
|
|
current_x = x;
|
|
|
|
|
|
|
|
/* We need header(4) + DCSCMD(1) + pixels(numpix*bytespp) bytes
|
|
|
|
* in fifo */
|
|
|
|
|
|
|
|
/* When using CPU, max long packet size is TX buffer size */
|
2011-05-12 11:56:27 +00:00
|
|
|
max_dsi_packet_size = dsi->vc[0].fifo_size * 32 * 4;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* we seem to get better perf if we divide the tx fifo to half,
|
|
|
|
and while the other half is being sent, we fill the other half
|
|
|
|
max_dsi_packet_size /= 2; */
|
|
|
|
|
|
|
|
max_data_per_packet = max_dsi_packet_size - 4 - 1;
|
|
|
|
|
|
|
|
max_pixels_per_packet = max_data_per_packet / bytespp;
|
|
|
|
|
|
|
|
DSSDBG("max_pixels_per_packet %d\n", max_pixels_per_packet);
|
|
|
|
|
|
|
|
pixels_left = w * h;
|
|
|
|
|
|
|
|
DSSDBG("total pixels %d\n", pixels_left);
|
|
|
|
|
|
|
|
data += start_offset;
|
|
|
|
|
|
|
|
while (pixels_left > 0) {
|
|
|
|
/* 0x2c = write_memory_start */
|
|
|
|
/* 0x3c = write_memory_continue */
|
|
|
|
u8 dcs_cmd = first ? 0x2c : 0x3c;
|
|
|
|
int pixels;
|
|
|
|
DSI_DECL_VARS;
|
|
|
|
first = 0;
|
|
|
|
|
|
|
|
#if 1
|
|
|
|
/* using fifo not empty */
|
|
|
|
/* TX_FIFO_NOT_EMPTY */
|
2011-05-12 11:56:26 +00:00
|
|
|
while (FLD_GET(dsi_read_reg(dsidev, DSI_VC_CTRL(0)), 5, 5)) {
|
2009-10-28 09:59:56 +00:00
|
|
|
fifo_stalls++;
|
|
|
|
if (fifo_stalls > 0xfffff) {
|
|
|
|
DSSERR("fifo stalls overflow, pixels left %d\n",
|
|
|
|
pixels_left);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_if_enable(dsidev, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EIO;
|
|
|
|
}
|
2010-01-07 12:19:48 +00:00
|
|
|
udelay(1);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
#elif 1
|
|
|
|
/* using fifo emptiness */
|
2011-05-12 11:56:26 +00:00
|
|
|
while ((REG_GET(dsidev, DSI_TX_FIFO_VC_EMPTINESS, 7, 0)+1)*4 <
|
2009-10-28 09:59:56 +00:00
|
|
|
max_dsi_packet_size) {
|
|
|
|
fifo_stalls++;
|
|
|
|
if (fifo_stalls > 0xfffff) {
|
|
|
|
DSSERR("fifo stalls overflow, pixels left %d\n",
|
|
|
|
pixels_left);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_if_enable(dsidev, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#else
|
2011-05-12 11:56:26 +00:00
|
|
|
while ((REG_GET(dsidev, DSI_TX_FIFO_VC_EMPTINESS,
|
|
|
|
7, 0) + 1) * 4 == 0) {
|
2009-10-28 09:59:56 +00:00
|
|
|
fifo_stalls++;
|
|
|
|
if (fifo_stalls > 0xfffff) {
|
|
|
|
DSSERR("fifo stalls overflow, pixels left %d\n",
|
|
|
|
pixels_left);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_if_enable(dsidev, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
pixels = min(max_pixels_per_packet, pixels_left);
|
|
|
|
|
|
|
|
pixels_left -= pixels;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_write_long_header(dsidev, 0, DSI_DT_DCS_LONG_WRITE,
|
2009-10-28 09:59:56 +00:00
|
|
|
1 + pixels * bytespp, 0);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
DSI_PUSH(dsidev, 0, dcs_cmd);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
while (pixels-- > 0) {
|
|
|
|
u32 pix = __raw_readl(data++);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
DSI_PUSH(dsidev, 0, (pix >> 16) & 0xff);
|
|
|
|
DSI_PUSH(dsidev, 0, (pix >> 8) & 0xff);
|
|
|
|
DSI_PUSH(dsidev, 0, (pix >> 0) & 0xff);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
current_x++;
|
|
|
|
if (current_x == x+w) {
|
|
|
|
current_x = x;
|
|
|
|
data += horiz_inc;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
DSI_FLUSH(dsidev, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi_update_screen_dispc(struct omap_dss_device *dssdev,
|
|
|
|
u16 x, u16 y, u16 w, u16 h)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
unsigned bytespp;
|
|
|
|
unsigned bytespl;
|
|
|
|
unsigned bytespf;
|
|
|
|
unsigned total_len;
|
|
|
|
unsigned packet_payload;
|
|
|
|
unsigned packet_len;
|
|
|
|
u32 l;
|
OMAP: DSS2: DSI: use a private workqueue
Using the shared workqueue led to to a deadlock in the case where the
display was unblanked via keyboard.
What happens is something like this:
- User presses a key
context 1:
- drivers/char/keyboard.c calls schedule_console_callback()
- fb_unblank takes the console semaphore
- dsi bus lock is taken, and frame transfer is started (dsi bus lock is
left on)
- Unblank code tries to set the panel backlight, which tries to take dsi
bus lock, but is blocked while the frame transfer is going on
context 2, shared workqueue, console_callback in drivers/char/vt.c:
- Tries to take console semaphore
- Blocks, as console semaphore is being held by context 1
- No other shared workqueue work can be run
context 3, HW irq, caused by FRAMEDONE interrupt:
- Interrupt handler schedules framedone-work in shared workqueue
- Framedone-work is never ran, as the shared workqueue is blocked. This
means that the unblank thread stays blocked, which means that context 2
stays blocked.
While I think the real problem is in keyboard/virtual terminal code, using
a private workqueue in the DSI driver is perhaps safer and more robust
than using the shared one. The DSI works should not be delayed more than a
millisecond or so, and even if the private workqueue gives us no hard
promise of doing so, it's still safer bet than the shared workqueue.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
2010-04-12 06:57:19 +00:00
|
|
|
int r;
|
2011-05-12 11:56:27 +00:00
|
|
|
const unsigned channel = dsi->update_channel;
|
2011-05-16 09:47:09 +00:00
|
|
|
const unsigned line_buf_size = dsi_get_line_buf_size(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-11 14:12:31 +00:00
|
|
|
DSSDBG("dsi_update_screen_dispc(%d,%d %dx%d)\n",
|
|
|
|
x, y, w, h);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_config_vp(dsidev, channel);
|
2010-01-12 12:16:41 +00:00
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
bytespp = dssdev->ctrl.pixel_size / 8;
|
|
|
|
bytespl = w * bytespp;
|
|
|
|
bytespf = bytespl * h;
|
|
|
|
|
|
|
|
/* NOTE: packet_payload has to be equal to N * bytespl, where N is
|
|
|
|
* number of lines in a packet. See errata about VP_CLK_RATIO */
|
|
|
|
|
|
|
|
if (bytespf < line_buf_size)
|
|
|
|
packet_payload = bytespf;
|
|
|
|
else
|
|
|
|
packet_payload = (line_buf_size) / bytespl * bytespl;
|
|
|
|
|
|
|
|
packet_len = packet_payload + 1; /* 1 byte for DCS cmd */
|
|
|
|
total_len = (bytespf / packet_payload) * packet_len;
|
|
|
|
|
|
|
|
if (bytespf % packet_payload)
|
|
|
|
total_len += (bytespf % packet_payload) + 1;
|
|
|
|
|
|
|
|
l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VC_TE(channel), l);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_write_long_header(dsidev, channel, DSI_DT_DCS_LONG_WRITE,
|
|
|
|
packet_len, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->te_enabled)
|
2009-10-28 09:59:56 +00:00
|
|
|
l = FLD_MOD(l, 1, 30, 30); /* TE_EN */
|
|
|
|
else
|
|
|
|
l = FLD_MOD(l, 1, 31, 31); /* TE_START */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_write_reg(dsidev, DSI_VC_TE(channel), l);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* We put SIDLEMODE to no-idle for the duration of the transfer,
|
|
|
|
* because DSS interrupts are not capable of waking up the CPU and the
|
|
|
|
* framedone interrupt could be delayed for quite a long time. I think
|
|
|
|
* the same goes for any DSS interrupts, but for some reason I have not
|
|
|
|
* seen the problem anywhere else than here.
|
|
|
|
*/
|
|
|
|
dispc_disable_sidle();
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_perf_mark_start(dsidev);
|
2010-01-12 12:16:41 +00:00
|
|
|
|
2011-05-16 09:47:07 +00:00
|
|
|
r = schedule_delayed_work(&dsi->framedone_timeout_work,
|
|
|
|
msecs_to_jiffies(250));
|
OMAP: DSS2: DSI: use a private workqueue
Using the shared workqueue led to to a deadlock in the case where the
display was unblanked via keyboard.
What happens is something like this:
- User presses a key
context 1:
- drivers/char/keyboard.c calls schedule_console_callback()
- fb_unblank takes the console semaphore
- dsi bus lock is taken, and frame transfer is started (dsi bus lock is
left on)
- Unblank code tries to set the panel backlight, which tries to take dsi
bus lock, but is blocked while the frame transfer is going on
context 2, shared workqueue, console_callback in drivers/char/vt.c:
- Tries to take console semaphore
- Blocks, as console semaphore is being held by context 1
- No other shared workqueue work can be run
context 3, HW irq, caused by FRAMEDONE interrupt:
- Interrupt handler schedules framedone-work in shared workqueue
- Framedone-work is never ran, as the shared workqueue is blocked. This
means that the unblank thread stays blocked, which means that context 2
stays blocked.
While I think the real problem is in keyboard/virtual terminal code, using
a private workqueue in the DSI driver is perhaps safer and more robust
than using the shared one. The DSI works should not be delayed more than a
millisecond or so, and even if the private workqueue gives us no hard
promise of doing so, it's still safer bet than the shared workqueue.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
2010-04-12 06:57:19 +00:00
|
|
|
BUG_ON(r == 0);
|
2010-01-12 12:16:41 +00:00
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
dss_start_update(dssdev);
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->te_enabled) {
|
2009-10-28 09:59:56 +00:00
|
|
|
/* disable LP_RX_TO, so that we can receive TE. Time to wait
|
|
|
|
* for TE is longer than the timer allows */
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_send_bta(dsidev, channel);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
#ifdef DSI_CATCH_MISSING_TE
|
2011-05-12 11:56:27 +00:00
|
|
|
mod_timer(&dsi->te_timer, jiffies + msecs_to_jiffies(250));
|
2009-10-28 09:59:56 +00:00
|
|
|
#endif
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DSI_CATCH_MISSING_TE
|
|
|
|
static void dsi_te_timeout(unsigned long arg)
|
|
|
|
{
|
|
|
|
DSSERR("TE not received for 250ms!\n");
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_handle_framedone(struct platform_device *dsidev, int error)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
/* SIDLEMODE back to smart-idle */
|
|
|
|
dispc_enable_sidle();
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->te_enabled) {
|
2010-01-12 12:16:41 +00:00
|
|
|
/* enable LP_RX_TO again after the TE */
|
2011-05-12 11:56:26 +00:00
|
|
|
REG_FLD_MOD(dsidev, DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->framedone_callback(error, dsi->framedone_data);
|
2010-06-09 12:31:01 +00:00
|
|
|
|
|
|
|
if (!error)
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_perf_show(dsidev, "DISPC");
|
2010-01-12 12:16:41 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-06-09 12:31:01 +00:00
|
|
|
static void dsi_framedone_timeout_work_callback(struct work_struct *work)
|
2010-01-12 12:16:41 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = container_of(work, struct dsi_data,
|
|
|
|
framedone_timeout_work.work);
|
2010-06-09 12:31:01 +00:00
|
|
|
/* XXX While extremely unlikely, we could get FRAMEDONE interrupt after
|
|
|
|
* 250ms which would conflict with this timeout work. What should be
|
|
|
|
* done is first cancel the transfer on the HW, and then cancel the
|
|
|
|
* possibly scheduled framedone work. However, cancelling the transfer
|
|
|
|
* on the HW is buggy, and would probably require resetting the whole
|
|
|
|
* DSI */
|
2010-01-12 12:16:41 +00:00
|
|
|
|
2010-06-09 12:31:01 +00:00
|
|
|
DSSERR("Framedone not received for 250ms!\n");
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi_handle_framedone(dsi->pdev, -ETIMEDOUT);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2010-06-09 12:31:01 +00:00
|
|
|
static void dsi_framedone_irq_callback(void *data, u32 mask)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct omap_dss_device *dssdev = (struct omap_dss_device *) data;
|
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2010-06-09 12:31:01 +00:00
|
|
|
/* Note: We get FRAMEDONE when DISPC has finished sending pixels and
|
|
|
|
* turns itself off. However, DSI still has the pixels in its buffers,
|
|
|
|
* and is sending the data.
|
|
|
|
*/
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
__cancel_delayed_work(&dsi->framedone_timeout_work);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_handle_framedone(dsidev, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-23 09:59:34 +00:00
|
|
|
#ifdef CONFIG_OMAP2_DSS_FAKE_VSYNC
|
|
|
|
dispc_fake_vsync_irq();
|
|
|
|
#endif
|
2010-01-12 12:16:41 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
int omap_dsi_prepare_update(struct omap_dss_device *dssdev,
|
2010-06-09 12:31:34 +00:00
|
|
|
u16 *x, u16 *y, u16 *w, u16 *h,
|
|
|
|
bool enlarge_update_area)
|
2010-01-12 12:16:41 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2010-01-12 12:16:41 +00:00
|
|
|
u16 dw, dh;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
dssdev->driver->get_resolution(dssdev, &dw, &dh);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
if (*x > dw || *y > dh)
|
|
|
|
return -EINVAL;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
if (*x + *w > dw)
|
|
|
|
return -EINVAL;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
if (*y + *h > dh)
|
|
|
|
return -EINVAL;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
if (*w == 1)
|
|
|
|
return -EINVAL;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
if (*w == 0 || *h == 0)
|
|
|
|
return -EINVAL;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_perf_mark_setup(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
|
2010-06-09 12:31:34 +00:00
|
|
|
dss_setup_partial_planes(dssdev, x, y, w, h,
|
|
|
|
enlarge_update_area);
|
2010-12-02 11:27:10 +00:00
|
|
|
dispc_set_lcd_size(dssdev->manager->id, *w, *h);
|
2010-01-12 12:16:41 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(omap_dsi_prepare_update);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
int omap_dsi_update(struct omap_dss_device *dssdev,
|
|
|
|
int channel,
|
|
|
|
u16 x, u16 y, u16 w, u16 h,
|
|
|
|
void (*callback)(int, void *), void *data)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-05-12 11:56:26 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->update_channel = channel;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-05-25 14:01:28 +00:00
|
|
|
/* OMAP DSS cannot send updates of odd widths.
|
|
|
|
* omap_dsi_prepare_update() makes the widths even, but add a BUG_ON
|
|
|
|
* here to make sure we catch erroneous updates. Otherwise we'll only
|
|
|
|
* see rather obscure HW error happening, as DSS halts. */
|
|
|
|
BUG_ON(x % 2 == 1);
|
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->framedone_callback = callback;
|
|
|
|
dsi->framedone_data = data;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->update_region.x = x;
|
|
|
|
dsi->update_region.y = y;
|
|
|
|
dsi->update_region.w = w;
|
|
|
|
dsi->update_region.h = h;
|
|
|
|
dsi->update_region.device = dssdev;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 12:16:41 +00:00
|
|
|
dsi_update_screen_dispc(dssdev, x, y, w, h);
|
|
|
|
} else {
|
2010-07-14 12:11:50 +00:00
|
|
|
int r;
|
|
|
|
|
|
|
|
r = dsi_update_screen_l4(dssdev, x, y, w, h);
|
|
|
|
if (r)
|
|
|
|
return r;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_perf_show(dsidev, "L4");
|
2010-01-12 12:16:41 +00:00
|
|
|
callback(0, data);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2010-01-12 12:16:41 +00:00
|
|
|
EXPORT_SYMBOL(omap_dsi_update);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
/* Display funcs */
|
|
|
|
|
|
|
|
static int dsi_display_init_dispc(struct omap_dss_device *dssdev)
|
|
|
|
{
|
|
|
|
int r;
|
2011-05-12 11:56:29 +00:00
|
|
|
u32 irq;
|
|
|
|
|
|
|
|
irq = dssdev->manager->id == OMAP_DSS_CHANNEL_LCD ?
|
|
|
|
DISPC_IRQ_FRAMEDONE : DISPC_IRQ_FRAMEDONE2;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = omap_dispc_register_isr(dsi_framedone_irq_callback, (void *) dssdev,
|
2011-05-12 11:56:29 +00:00
|
|
|
irq);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r) {
|
|
|
|
DSSERR("can't get FRAMEDONE irq\n");
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2010-12-02 11:27:10 +00:00
|
|
|
dispc_set_lcd_display_type(dssdev->manager->id,
|
|
|
|
OMAP_DSS_LCD_DISPLAY_TFT);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-12-02 11:27:10 +00:00
|
|
|
dispc_set_parallel_interface_mode(dssdev->manager->id,
|
|
|
|
OMAP_DSS_PARALLELMODE_DSI);
|
|
|
|
dispc_enable_fifohandcheck(dssdev->manager->id, 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-12-02 11:27:10 +00:00
|
|
|
dispc_set_tft_data_lines(dssdev->manager->id, dssdev->ctrl.pixel_size);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
{
|
|
|
|
struct omap_video_timings timings = {
|
|
|
|
.hsw = 1,
|
|
|
|
.hfp = 1,
|
|
|
|
.hbp = 1,
|
|
|
|
.vsw = 1,
|
|
|
|
.vfp = 0,
|
|
|
|
.vbp = 0,
|
|
|
|
};
|
|
|
|
|
2010-12-02 11:27:10 +00:00
|
|
|
dispc_set_lcd_timings(dssdev->manager->id, &timings);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi_display_uninit_dispc(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:29 +00:00
|
|
|
u32 irq;
|
|
|
|
|
|
|
|
irq = dssdev->manager->id == OMAP_DSS_CHANNEL_LCD ?
|
|
|
|
DISPC_IRQ_FRAMEDONE : DISPC_IRQ_FRAMEDONE2;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
omap_dispc_unregister_isr(dsi_framedone_irq_callback, (void *) dssdev,
|
2011-05-12 11:56:29 +00:00
|
|
|
irq);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
struct dsi_clock_info cinfo;
|
|
|
|
int r;
|
|
|
|
|
2011-02-24 08:47:30 +00:00
|
|
|
/* we always use DSS_CLK_SYSCK as input clock */
|
|
|
|
cinfo.use_sys_clk = true;
|
2011-02-22 11:36:10 +00:00
|
|
|
cinfo.regn = dssdev->clocks.dsi.regn;
|
|
|
|
cinfo.regm = dssdev->clocks.dsi.regm;
|
|
|
|
cinfo.regm_dispc = dssdev->clocks.dsi.regm_dispc;
|
|
|
|
cinfo.regm_dsi = dssdev->clocks.dsi.regm_dsi;
|
2010-12-02 11:27:11 +00:00
|
|
|
r = dsi_calc_clock_rates(dssdev, &cinfo);
|
2010-04-22 20:50:05 +00:00
|
|
|
if (r) {
|
|
|
|
DSSERR("Failed to calc dsi clocks\n");
|
2009-10-28 09:59:56 +00:00
|
|
|
return r;
|
2010-04-22 20:50:05 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_pll_set_clock_div(dsidev, &cinfo);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r) {
|
|
|
|
DSSERR("Failed to set dsi clocks\n");
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
struct dispc_clock_info dispc_cinfo;
|
|
|
|
int r;
|
|
|
|
unsigned long long fck;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
fck = dsi_get_pll_hsdiv_dispc_rate(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-04-12 08:22:24 +00:00
|
|
|
dispc_cinfo.lck_div = dssdev->clocks.dispc.channel.lck_div;
|
|
|
|
dispc_cinfo.pck_div = dssdev->clocks.dispc.channel.pck_div;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
r = dispc_calc_clock_rates(fck, &dispc_cinfo);
|
|
|
|
if (r) {
|
|
|
|
DSSERR("Failed to calc dispc clocks\n");
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2010-12-02 11:27:11 +00:00
|
|
|
r = dispc_set_clock_div(dssdev->manager->id, &dispc_cinfo);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r) {
|
|
|
|
DSSERR("Failed to set dispc clocks\n");
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dsi_display_init_dsi(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:29 +00:00
|
|
|
int dsi_module = dsi_get_dsidev_id(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int r;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
r = dsi_pll_init(dsidev, true, true);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r)
|
|
|
|
goto err0;
|
|
|
|
|
|
|
|
r = dsi_configure_dsi_clocks(dssdev);
|
|
|
|
if (r)
|
|
|
|
goto err1;
|
|
|
|
|
2011-04-12 08:22:24 +00:00
|
|
|
dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src);
|
2011-05-12 11:56:29 +00:00
|
|
|
dss_select_dsi_clk_source(dsi_module, dssdev->clocks.dsi.dsi_fclk_src);
|
2011-03-22 11:33:36 +00:00
|
|
|
dss_select_lcd_clk_source(dssdev->manager->id,
|
2011-04-12 08:22:24 +00:00
|
|
|
dssdev->clocks.dispc.channel.lcd_clk_src);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
DSSDBG("PLL OK\n");
|
|
|
|
|
|
|
|
r = dsi_configure_dispc_clocks(dssdev);
|
|
|
|
if (r)
|
|
|
|
goto err2;
|
|
|
|
|
2010-10-06 12:18:13 +00:00
|
|
|
r = dsi_cio_init(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r)
|
|
|
|
goto err2;
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
_dsi_print_reset_status(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
dsi_proto_timings(dssdev);
|
|
|
|
dsi_set_lp_clk_divisor(dssdev);
|
|
|
|
|
|
|
|
if (1)
|
2011-05-12 11:56:26 +00:00
|
|
|
_dsi_print_reset_status(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
r = dsi_proto_config(dssdev);
|
|
|
|
if (r)
|
|
|
|
goto err3;
|
|
|
|
|
|
|
|
/* enable interface */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_vc_enable(dsidev, 0, 1);
|
|
|
|
dsi_vc_enable(dsidev, 1, 1);
|
|
|
|
dsi_vc_enable(dsidev, 2, 1);
|
|
|
|
dsi_vc_enable(dsidev, 3, 1);
|
|
|
|
dsi_if_enable(dsidev, 1);
|
|
|
|
dsi_force_tx_stop_mode_io(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
err3:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_cio_uninit(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
err2:
|
2011-04-12 08:22:23 +00:00
|
|
|
dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
|
2011-05-12 11:56:29 +00:00
|
|
|
dss_select_dsi_clk_source(dsi_module, OMAP_DSS_CLK_SRC_FCK);
|
2009-10-28 09:59:56 +00:00
|
|
|
err1:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_pll_uninit(dsidev, true);
|
2009-10-28 09:59:56 +00:00
|
|
|
err0:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2010-07-30 09:39:34 +00:00
|
|
|
static void dsi_display_uninit_dsi(struct omap_dss_device *dssdev,
|
2010-10-11 08:33:30 +00:00
|
|
|
bool disconnect_lanes, bool enter_ulps)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-05-12 11:56:29 +00:00
|
|
|
int dsi_module = dsi_get_dsidev_id(dsidev);
|
2011-05-12 11:56:26 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (enter_ulps && !dsi->ulps_enabled)
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_enter_ulps(dsidev);
|
2010-07-28 12:53:38 +00:00
|
|
|
|
2010-04-22 20:50:09 +00:00
|
|
|
/* disable interface */
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_if_enable(dsidev, 0);
|
|
|
|
dsi_vc_enable(dsidev, 0, 0);
|
|
|
|
dsi_vc_enable(dsidev, 1, 0);
|
|
|
|
dsi_vc_enable(dsidev, 2, 0);
|
|
|
|
dsi_vc_enable(dsidev, 3, 0);
|
2010-04-22 20:50:09 +00:00
|
|
|
|
2011-04-12 08:22:23 +00:00
|
|
|
dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
|
2011-05-12 11:56:29 +00:00
|
|
|
dss_select_dsi_clk_source(dsi_module, OMAP_DSS_CLK_SRC_FCK);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_cio_uninit(dsidev);
|
|
|
|
dsi_pll_uninit(dsidev, disconnect_lanes);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2010-01-12 13:12:07 +00:00
|
|
|
int omapdss_dsi_display_enable(struct omap_dss_device *dssdev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
int r = 0;
|
|
|
|
|
|
|
|
DSSDBG("dsi_display_enable\n");
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
WARN_ON(!dsi_bus_is_locked(dsidev));
|
2010-01-12 13:12:07 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
mutex_lock(&dsi->lock);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
r = omap_dss_start_device(dssdev);
|
|
|
|
if (r) {
|
|
|
|
DSSERR("failed to start device\n");
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_start_dev;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
r = dsi_runtime_get(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
if (r)
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_get_dsi;
|
|
|
|
|
|
|
|
dsi_enable_pll_clock(dsidev, 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
_dsi_initialize_irq(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
r = dsi_display_init_dispc(dssdev);
|
|
|
|
if (r)
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_init_dispc;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
r = dsi_display_init_dsi(dssdev);
|
|
|
|
if (r)
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_init_dsi;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
mutex_unlock(&dsi->lock);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
err_init_dsi:
|
2010-01-12 13:12:07 +00:00
|
|
|
dsi_display_uninit_dispc(dssdev);
|
2011-05-27 07:52:19 +00:00
|
|
|
err_init_dispc:
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_enable_pll_clock(dsidev, 0);
|
2011-05-27 07:52:19 +00:00
|
|
|
dsi_runtime_put(dsidev);
|
|
|
|
err_get_dsi:
|
2009-10-28 09:59:56 +00:00
|
|
|
omap_dss_stop_device(dssdev);
|
2011-05-27 07:52:19 +00:00
|
|
|
err_start_dev:
|
2011-05-12 11:56:27 +00:00
|
|
|
mutex_unlock(&dsi->lock);
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("dsi_display_enable FAILED\n");
|
|
|
|
return r;
|
|
|
|
}
|
2010-01-12 13:12:07 +00:00
|
|
|
EXPORT_SYMBOL(omapdss_dsi_display_enable);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-07-30 09:39:34 +00:00
|
|
|
void omapdss_dsi_display_disable(struct omap_dss_device *dssdev,
|
2010-10-11 08:33:30 +00:00
|
|
|
bool disconnect_lanes, bool enter_ulps)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-05-12 11:56:26 +00:00
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("dsi_display_disable\n");
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
WARN_ON(!dsi_bus_is_locked(dsidev));
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
mutex_lock(&dsi->lock);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-06-16 11:34:06 +00:00
|
|
|
dsi_sync_vc(dsidev, 0);
|
|
|
|
dsi_sync_vc(dsidev, 1);
|
|
|
|
dsi_sync_vc(dsidev, 2);
|
|
|
|
dsi_sync_vc(dsidev, 3);
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
dsi_display_uninit_dispc(dssdev);
|
|
|
|
|
2010-10-11 08:33:30 +00:00
|
|
|
dsi_display_uninit_dsi(dssdev, disconnect_lanes, enter_ulps);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
dsi_runtime_put(dsidev);
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_enable_pll_clock(dsidev, 0);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-12 13:12:07 +00:00
|
|
|
omap_dss_stop_device(dssdev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
mutex_unlock(&dsi->lock);
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
2010-01-12 13:12:07 +00:00
|
|
|
EXPORT_SYMBOL(omapdss_dsi_display_disable);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2010-01-11 13:11:01 +00:00
|
|
|
int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
dsi->te_enabled = enable;
|
2010-01-11 13:11:01 +00:00
|
|
|
return 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
2010-01-11 13:11:01 +00:00
|
|
|
EXPORT_SYMBOL(omapdss_dsi_enable_te);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
void dsi_get_overlay_fifo_thresholds(enum omap_plane plane,
|
2011-06-21 06:35:36 +00:00
|
|
|
u32 fifo_size, u32 burst_size,
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 *fifo_low, u32 *fifo_high)
|
|
|
|
{
|
2011-06-21 06:35:36 +00:00
|
|
|
*fifo_high = fifo_size - burst_size;
|
|
|
|
*fifo_low = fifo_size - burst_size * 2;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int dsi_init_display(struct omap_dss_device *dssdev)
|
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-05-16 09:47:08 +00:00
|
|
|
int dsi_module = dsi_get_dsidev_id(dsidev);
|
2011-05-12 11:56:27 +00:00
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSDBG("DSI init\n");
|
|
|
|
|
|
|
|
/* XXX these should be figured out dynamically */
|
|
|
|
dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE |
|
|
|
|
OMAP_DSS_DISPLAY_CAP_TEAR_ELIM;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->vdds_dsi_reg == NULL) {
|
2011-02-22 13:53:46 +00:00
|
|
|
struct regulator *vdds_dsi;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
vdds_dsi = regulator_get(&dsi->pdev->dev, "vdds_dsi");
|
2011-02-22 13:53:46 +00:00
|
|
|
|
|
|
|
if (IS_ERR(vdds_dsi)) {
|
|
|
|
DSSERR("can't get VDDS_DSI regulator\n");
|
|
|
|
return PTR_ERR(vdds_dsi);
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vdds_dsi_reg = vdds_dsi;
|
2011-02-22 13:53:46 +00:00
|
|
|
}
|
|
|
|
|
2011-05-16 09:47:08 +00:00
|
|
|
if (dsi_get_num_data_lanes_dssdev(dssdev) > dsi->num_data_lanes) {
|
|
|
|
DSSERR("DSI%d can't support more than %d data lanes\n",
|
|
|
|
dsi_module + 1, dsi->num_data_lanes);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-03-02 07:05:53 +00:00
|
|
|
int omap_dsi_request_vc(struct omap_dss_device *dssdev, int *channel)
|
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
2011-03-02 07:05:53 +00:00
|
|
|
int i;
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
|
|
|
|
if (!dsi->vc[i].dssdev) {
|
|
|
|
dsi->vc[i].dssdev = dssdev;
|
2011-03-02 07:05:53 +00:00
|
|
|
*channel = i;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
DSSERR("cannot get VC for display %s", dssdev->name);
|
|
|
|
return -ENOSPC;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(omap_dsi_request_vc);
|
|
|
|
|
|
|
|
int omap_dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id)
|
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2011-03-02 07:05:53 +00:00
|
|
|
if (vc_id < 0 || vc_id > 3) {
|
|
|
|
DSSERR("VC ID out of range\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (channel < 0 || channel > 3) {
|
|
|
|
DSSERR("Virtual Channel out of range\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->vc[channel].dssdev != dssdev) {
|
2011-03-02 07:05:53 +00:00
|
|
|
DSSERR("Virtual Channel not allocated to display %s\n",
|
|
|
|
dssdev->name);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vc[channel].vc_id = vc_id;
|
2011-03-02 07:05:53 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(omap_dsi_set_vc_id);
|
|
|
|
|
|
|
|
void omap_dsi_release_vc(struct omap_dss_device *dssdev, int channel)
|
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2011-03-02 07:05:53 +00:00
|
|
|
if ((channel >= 0 && channel <= 3) &&
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->vc[channel].dssdev == dssdev) {
|
|
|
|
dsi->vc[channel].dssdev = NULL;
|
|
|
|
dsi->vc[channel].vc_id = 0;
|
2011-03-02 07:05:53 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(omap_dsi_release_vc);
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
void dsi_wait_pll_hsdiv_dispc_active(struct platform_device *dsidev)
|
2010-06-09 12:28:12 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 7, 1) != 1)
|
2011-03-02 06:27:25 +00:00
|
|
|
DSSERR("%s (%s) not active\n",
|
2011-04-12 08:22:23 +00:00
|
|
|
dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
|
|
|
|
dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC));
|
2010-06-09 12:28:12 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
void dsi_wait_pll_hsdiv_dsi_active(struct platform_device *dsidev)
|
2010-06-09 12:28:12 +00:00
|
|
|
{
|
2011-05-12 11:56:26 +00:00
|
|
|
if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 8, 1) != 1)
|
2011-03-02 06:27:25 +00:00
|
|
|
DSSERR("%s (%s) not active\n",
|
2011-04-12 08:22:23 +00:00
|
|
|
dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
|
|
|
|
dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI));
|
2010-06-09 12:28:12 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
static void dsi_calc_clock_param_ranges(struct platform_device *dsidev)
|
2011-03-15 04:28:23 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
dsi->regn_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGN);
|
|
|
|
dsi->regm_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM);
|
|
|
|
dsi->regm_dispc_max =
|
|
|
|
dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DISPC);
|
|
|
|
dsi->regm_dsi_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DSI);
|
|
|
|
dsi->fint_min = dss_feat_get_param_min(FEAT_PARAM_DSIPLL_FINT);
|
|
|
|
dsi->fint_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_FINT);
|
|
|
|
dsi->lpdiv_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_LPDIV);
|
2011-03-15 04:28:23 +00:00
|
|
|
}
|
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
static int dsi_get_clocks(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
struct clk *clk;
|
|
|
|
|
|
|
|
clk = clk_get(&dsidev->dev, "fck");
|
|
|
|
if (IS_ERR(clk)) {
|
|
|
|
DSSERR("can't get fck\n");
|
|
|
|
return PTR_ERR(clk);
|
|
|
|
}
|
|
|
|
|
|
|
|
dsi->dss_clk = clk;
|
|
|
|
|
2011-08-01 11:32:23 +00:00
|
|
|
if (cpu_is_omap34xx() || cpu_is_omap3630())
|
|
|
|
clk = clk_get(&dsidev->dev, "dss2_alwon_fck");
|
|
|
|
else
|
|
|
|
clk = clk_get(&dsidev->dev, "sys_clk");
|
2011-05-27 07:52:19 +00:00
|
|
|
if (IS_ERR(clk)) {
|
|
|
|
DSSERR("can't get sys_clk\n");
|
|
|
|
clk_put(dsi->dss_clk);
|
|
|
|
dsi->dss_clk = NULL;
|
|
|
|
return PTR_ERR(clk);
|
|
|
|
}
|
|
|
|
|
|
|
|
dsi->sys_clk = clk;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dsi_put_clocks(struct platform_device *dsidev)
|
|
|
|
{
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
|
|
|
if (dsi->dss_clk)
|
|
|
|
clk_put(dsi->dss_clk);
|
|
|
|
if (dsi->sys_clk)
|
|
|
|
clk_put(dsi->sys_clk);
|
|
|
|
}
|
|
|
|
|
2011-05-16 10:52:51 +00:00
|
|
|
/* DSI1 HW IP initialisation */
|
|
|
|
static int omap_dsi1hw_probe(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2010-07-30 08:57:57 +00:00
|
|
|
struct omap_display_platform_data *dss_plat_data;
|
|
|
|
struct omap_dss_board_info *board_info;
|
2009-10-28 09:59:56 +00:00
|
|
|
u32 rev;
|
2011-05-12 11:56:27 +00:00
|
|
|
int r, i, dsi_module = dsi_get_dsidev_id(dsidev);
|
2011-01-24 06:22:04 +00:00
|
|
|
struct resource *dsi_mem;
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi;
|
|
|
|
|
|
|
|
dsi = kzalloc(sizeof(*dsi), GFP_KERNEL);
|
|
|
|
if (!dsi) {
|
|
|
|
r = -ENOMEM;
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_alloc;
|
2011-05-12 11:56:27 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->pdev = dsidev;
|
|
|
|
dsi_pdev_map[dsi_module] = dsidev;
|
|
|
|
dev_set_drvdata(&dsidev->dev, dsi);
|
2011-05-12 11:56:26 +00:00
|
|
|
|
|
|
|
dss_plat_data = dsidev->dev.platform_data;
|
2010-07-30 08:57:57 +00:00
|
|
|
board_info = dss_plat_data->board_data;
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->dsi_mux_pads = board_info->dsi_mux_pads;
|
2010-07-30 08:57:57 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_init(&dsi->irq_lock);
|
|
|
|
spin_lock_init(&dsi->errors_lock);
|
|
|
|
dsi->errors = 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2009-12-17 12:35:21 +00:00
|
|
|
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
|
2011-05-12 11:56:27 +00:00
|
|
|
spin_lock_init(&dsi->irq_stats_lock);
|
|
|
|
dsi->irq_stats.last_reset = jiffies;
|
2009-12-17 12:35:21 +00:00
|
|
|
#endif
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
mutex_init(&dsi->lock);
|
|
|
|
sema_init(&dsi->bus_lock, 1);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
r = dsi_get_clocks(dsidev);
|
|
|
|
if (r)
|
|
|
|
goto err_get_clk;
|
|
|
|
|
|
|
|
pm_runtime_enable(&dsidev->dev);
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
INIT_DELAYED_WORK_DEFERRABLE(&dsi->framedone_timeout_work,
|
2010-01-12 12:16:41 +00:00
|
|
|
dsi_framedone_timeout_work_callback);
|
|
|
|
|
2009-10-28 09:59:56 +00:00
|
|
|
#ifdef DSI_CATCH_MISSING_TE
|
2011-05-12 11:56:27 +00:00
|
|
|
init_timer(&dsi->te_timer);
|
|
|
|
dsi->te_timer.function = dsi_te_timeout;
|
|
|
|
dsi->te_timer.data = 0;
|
2009-10-28 09:59:56 +00:00
|
|
|
#endif
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi_mem = platform_get_resource(dsi->pdev, IORESOURCE_MEM, 0);
|
2011-01-24 06:22:04 +00:00
|
|
|
if (!dsi_mem) {
|
|
|
|
DSSERR("can't get IORESOURCE_MEM DSI\n");
|
|
|
|
r = -EINVAL;
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_ioremap;
|
2011-01-24 06:22:04 +00:00
|
|
|
}
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->base = ioremap(dsi_mem->start, resource_size(dsi_mem));
|
|
|
|
if (!dsi->base) {
|
2009-10-28 09:59:56 +00:00
|
|
|
DSSERR("can't ioremap DSI\n");
|
|
|
|
r = -ENOMEM;
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_ioremap;
|
2009-10-28 09:59:56 +00:00
|
|
|
}
|
2011-05-12 11:56:27 +00:00
|
|
|
dsi->irq = platform_get_irq(dsi->pdev, 0);
|
|
|
|
if (dsi->irq < 0) {
|
2011-02-23 08:41:03 +00:00
|
|
|
DSSERR("platform_get_irq failed\n");
|
|
|
|
r = -ENODEV;
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_get_irq;
|
2011-02-23 08:41:03 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
r = request_irq(dsi->irq, omap_dsi_irq_handler, IRQF_SHARED,
|
|
|
|
dev_name(&dsidev->dev), dsi->pdev);
|
2011-02-23 08:41:03 +00:00
|
|
|
if (r < 0) {
|
|
|
|
DSSERR("request_irq failed\n");
|
2011-05-27 07:52:19 +00:00
|
|
|
goto err_get_irq;
|
2011-02-23 08:41:03 +00:00
|
|
|
}
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-03-02 07:05:53 +00:00
|
|
|
/* DSI VCs initialization */
|
2011-05-12 11:56:27 +00:00
|
|
|
for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
|
|
|
|
dsi->vc[i].mode = DSI_VC_MODE_L4;
|
|
|
|
dsi->vc[i].dssdev = NULL;
|
|
|
|
dsi->vc[i].vc_id = 0;
|
2011-03-02 07:05:53 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
dsi_calc_clock_param_ranges(dsidev);
|
2011-03-15 04:28:23 +00:00
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
r = dsi_runtime_get(dsidev);
|
|
|
|
if (r)
|
|
|
|
goto err_get_dsi;
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:26 +00:00
|
|
|
rev = dsi_read_reg(dsidev, DSI_REVISION);
|
|
|
|
dev_dbg(&dsidev->dev, "OMAP DSI rev %d.%d\n",
|
2009-10-28 09:59:56 +00:00
|
|
|
FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
|
|
|
|
|
2011-05-16 09:47:08 +00:00
|
|
|
dsi->num_data_lanes = dsi_get_num_data_lanes(dsidev);
|
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
dsi_runtime_put(dsidev);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
|
|
|
return 0;
|
2011-05-27 07:52:19 +00:00
|
|
|
|
|
|
|
err_get_dsi:
|
|
|
|
free_irq(dsi->irq, dsi->pdev);
|
|
|
|
err_get_irq:
|
2011-05-16 09:47:07 +00:00
|
|
|
iounmap(dsi->base);
|
2011-05-27 07:52:19 +00:00
|
|
|
err_ioremap:
|
|
|
|
pm_runtime_disable(&dsidev->dev);
|
|
|
|
err_get_clk:
|
2011-05-12 11:56:27 +00:00
|
|
|
kfree(dsi);
|
2011-05-27 07:52:19 +00:00
|
|
|
err_alloc:
|
2009-10-28 09:59:56 +00:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2011-05-16 10:52:51 +00:00
|
|
|
static int omap_dsi1hw_remove(struct platform_device *dsidev)
|
2009-10-28 09:59:56 +00:00
|
|
|
{
|
2011-05-12 11:56:27 +00:00
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
|
|
|
|
|
2011-05-16 10:52:51 +00:00
|
|
|
WARN_ON(dsi->scp_clk_refcount > 0);
|
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
pm_runtime_disable(&dsidev->dev);
|
|
|
|
|
|
|
|
dsi_put_clocks(dsidev);
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
if (dsi->vdds_dsi_reg != NULL) {
|
|
|
|
if (dsi->vdds_dsi_enabled) {
|
|
|
|
regulator_disable(dsi->vdds_dsi_reg);
|
|
|
|
dsi->vdds_dsi_enabled = false;
|
2010-12-20 14:26:22 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
regulator_put(dsi->vdds_dsi_reg);
|
|
|
|
dsi->vdds_dsi_reg = NULL;
|
2011-01-24 06:22:02 +00:00
|
|
|
}
|
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
free_irq(dsi->irq, dsi->pdev);
|
|
|
|
iounmap(dsi->base);
|
2009-10-28 09:59:56 +00:00
|
|
|
|
2011-05-12 11:56:27 +00:00
|
|
|
kfree(dsi);
|
OMAP: DSS2: DSI: use a private workqueue
Using the shared workqueue led to to a deadlock in the case where the
display was unblanked via keyboard.
What happens is something like this:
- User presses a key
context 1:
- drivers/char/keyboard.c calls schedule_console_callback()
- fb_unblank takes the console semaphore
- dsi bus lock is taken, and frame transfer is started (dsi bus lock is
left on)
- Unblank code tries to set the panel backlight, which tries to take dsi
bus lock, but is blocked while the frame transfer is going on
context 2, shared workqueue, console_callback in drivers/char/vt.c:
- Tries to take console semaphore
- Blocks, as console semaphore is being held by context 1
- No other shared workqueue work can be run
context 3, HW irq, caused by FRAMEDONE interrupt:
- Interrupt handler schedules framedone-work in shared workqueue
- Framedone-work is never ran, as the shared workqueue is blocked. This
means that the unblank thread stays blocked, which means that context 2
stays blocked.
While I think the real problem is in keyboard/virtual terminal code, using
a private workqueue in the DSI driver is perhaps safer and more robust
than using the shared one. The DSI works should not be delayed more than a
millisecond or so, and even if the private workqueue gives us no hard
promise of doing so, it's still safer bet than the shared workqueue.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
2010-04-12 06:57:19 +00:00
|
|
|
|
2011-01-24 06:22:02 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-27 07:52:19 +00:00
|
|
|
static int dsi_runtime_suspend(struct device *dev)
|
|
|
|
{
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(to_platform_device(dev));
|
|
|
|
|
|
|
|
clk_disable(dsi->dss_clk);
|
|
|
|
|
|
|
|
dispc_runtime_put();
|
|
|
|
dss_runtime_put();
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dsi_runtime_resume(struct device *dev)
|
|
|
|
{
|
|
|
|
struct dsi_data *dsi = dsi_get_dsidrv_data(to_platform_device(dev));
|
|
|
|
int r;
|
|
|
|
|
|
|
|
r = dss_runtime_get();
|
|
|
|
if (r)
|
|
|
|
goto err_get_dss;
|
|
|
|
|
|
|
|
r = dispc_runtime_get();
|
|
|
|
if (r)
|
|
|
|
goto err_get_dispc;
|
|
|
|
|
|
|
|
clk_enable(dsi->dss_clk);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_get_dispc:
|
|
|
|
dss_runtime_put();
|
|
|
|
err_get_dss:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct dev_pm_ops dsi_pm_ops = {
|
|
|
|
.runtime_suspend = dsi_runtime_suspend,
|
|
|
|
.runtime_resume = dsi_runtime_resume,
|
|
|
|
};
|
|
|
|
|
2011-01-24 06:22:02 +00:00
|
|
|
static struct platform_driver omap_dsi1hw_driver = {
|
|
|
|
.probe = omap_dsi1hw_probe,
|
|
|
|
.remove = omap_dsi1hw_remove,
|
|
|
|
.driver = {
|
|
|
|
.name = "omapdss_dsi1",
|
|
|
|
.owner = THIS_MODULE,
|
2011-05-27 07:52:19 +00:00
|
|
|
.pm = &dsi_pm_ops,
|
2011-01-24 06:22:02 +00:00
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
int dsi_init_platform_driver(void)
|
|
|
|
{
|
|
|
|
return platform_driver_register(&omap_dsi1hw_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
void dsi_uninit_platform_driver(void)
|
|
|
|
{
|
|
|
|
return platform_driver_unregister(&omap_dsi1hw_driver);
|
|
|
|
}
|