296 lines
6.1 KiB
C
296 lines
6.1 KiB
C
/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/time.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/delay.h>
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#include <mach/hardware.h>
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#include <linux/io.h>
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#include <asm/system.h>
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#include <asm/mach-types.h>
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#include <linux/semaphore.h>
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#include <linux/uaccess.h>
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#include <linux/clk.h>
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#include <linux/platform_device.h>
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#include <linux/pm_qos_params.h>
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#define TVENC_C
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#include "tvenc.h"
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#include "msm_fb.h"
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static int tvenc_probe(struct platform_device *pdev);
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static int tvenc_remove(struct platform_device *pdev);
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static int tvenc_off(struct platform_device *pdev);
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static int tvenc_on(struct platform_device *pdev);
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static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
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static int pdev_list_cnt;
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static struct clk *tvenc_clk;
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static struct clk *tvdac_clk;
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static struct platform_driver tvenc_driver = {
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.probe = tvenc_probe,
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.remove = tvenc_remove,
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.suspend = NULL,
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// .suspend_late = NULL,
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// .resume_early = NULL,
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.resume = NULL,
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.shutdown = NULL,
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.driver = {
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.name = "tvenc",
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},
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};
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static struct tvenc_platform_data *tvenc_pdata;
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static int tvenc_off(struct platform_device *pdev)
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{
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int ret = 0;
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ret = panel_next_off(pdev);
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clk_disable(tvenc_clk);
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clk_disable(tvdac_clk);
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if (tvenc_pdata && tvenc_pdata->pm_vid_en)
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ret = tvenc_pdata->pm_vid_en(0);
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//pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
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// PM_QOS_DEFAULT_VALUE);
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if (ret)
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printk(KERN_ERR "%s: pm_vid_en(off) failed! %d\n",
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__func__, ret);
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return ret;
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}
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static int tvenc_on(struct platform_device *pdev)
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{
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int ret = 0;
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// pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
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// 128000);
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if (tvenc_pdata && tvenc_pdata->pm_vid_en)
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ret = tvenc_pdata->pm_vid_en(1);
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if (ret) {
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printk(KERN_ERR "%s: pm_vid_en(on) failed! %d\n",
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__func__, ret);
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return ret;
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}
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clk_enable(tvenc_clk);
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clk_enable(tvdac_clk);
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ret = panel_next_on(pdev);
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return ret;
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}
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void tvenc_gen_test_pattern(struct msm_fb_data_type *mfd)
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{
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uint32 reg = 0, i;
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reg = readl(MSM_TV_ENC_CTL);
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reg |= TVENC_CTL_TEST_PATT_EN;
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for (i = 0; i < 3; i++) {
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TV_OUT(TV_ENC_CTL, 0); /* disable TV encoder */
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switch (i) {
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/*
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* TV Encoder - Color Bar Test Pattern
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*/
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case 0:
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reg |= TVENC_CTL_TPG_CLRBAR;
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break;
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/*
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* TV Encoder - Red Frame Test Pattern
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*/
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case 1:
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reg |= TVENC_CTL_TPG_REDCLR;
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break;
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/*
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* TV Encoder - Modulated Ramp Test Pattern
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*/
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default:
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reg |= TVENC_CTL_TPG_MODRAMP;
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break;
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}
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TV_OUT(TV_ENC_CTL, reg);
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mdelay(5000);
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switch (i) {
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/*
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* TV Encoder - Color Bar Test Pattern
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*/
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case 0:
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reg &= ~TVENC_CTL_TPG_CLRBAR;
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break;
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/*
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* TV Encoder - Red Frame Test Pattern
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*/
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case 1:
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reg &= ~TVENC_CTL_TPG_REDCLR;
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break;
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/*
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* TV Encoder - Modulated Ramp Test Pattern
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*/
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default:
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reg &= ~TVENC_CTL_TPG_MODRAMP;
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break;
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}
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}
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}
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static int tvenc_resource_initialized;
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static int tvenc_probe(struct platform_device *pdev)
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{
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struct msm_fb_data_type *mfd;
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struct platform_device *mdp_dev = NULL;
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struct msm_fb_panel_data *pdata = NULL;
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int rc;
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if (pdev->id == 0) {
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tvenc_base = ioremap(pdev->resource[0].start,
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pdev->resource[0].end -
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pdev->resource[0].start + 1);
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if (!tvenc_base) {
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printk(KERN_ERR
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"tvenc_base ioremap failed!\n");
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return -ENOMEM;
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}
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tvenc_pdata = pdev->dev.platform_data;
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tvenc_resource_initialized = 1;
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return 0;
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}
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if (!tvenc_resource_initialized)
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return -EPERM;
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mfd = platform_get_drvdata(pdev);
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if (!mfd)
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return -ENODEV;
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if (mfd->key != MFD_KEY)
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return -EINVAL;
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if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
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return -ENOMEM;
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if (tvenc_base == NULL)
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return -ENOMEM;
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mdp_dev = platform_device_alloc("mdp", pdev->id);
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if (!mdp_dev)
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return -ENOMEM;
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/*
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* link to the latest pdev
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*/
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mfd->pdev = mdp_dev;
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mfd->dest = DISPLAY_TV;
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/*
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* alloc panel device data
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*/
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if (platform_device_add_data
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(mdp_dev, pdev->dev.platform_data,
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sizeof(struct msm_fb_panel_data))) {
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printk(KERN_ERR "tvenc_probe: platform_device_add_data failed!\n");
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platform_device_put(mdp_dev);
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return -ENOMEM;
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}
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/*
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* data chain
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*/
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pdata = mdp_dev->dev.platform_data;
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pdata->on = tvenc_on;
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pdata->off = tvenc_off;
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pdata->next = pdev;
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/*
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* get/set panel specific fb info
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*/
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mfd->panel_info = pdata->panel_info;
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mfd->fb_imgType = MDP_YCRYCB_H2V1;
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/*
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* set driver data
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*/
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platform_set_drvdata(mdp_dev, mfd);
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/*
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* register in mdp driver
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*/
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rc = platform_device_add(mdp_dev);
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if (rc)
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goto tvenc_probe_err;
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pdev_list[pdev_list_cnt++] = pdev;
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return 0;
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tvenc_probe_err:
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platform_device_put(mdp_dev);
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return rc;
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}
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static int tvenc_remove(struct platform_device *pdev)
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{
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// pm_qos_remove_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc");
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return 0;
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}
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static int tvenc_register_driver(void)
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{
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return platform_driver_register(&tvenc_driver);
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}
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static int __init tvenc_driver_init(void)
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{
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tvenc_clk = clk_get(NULL, "tv_enc_clk");
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tvdac_clk = clk_get(NULL, "tv_dac_clk");
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if (IS_ERR(tvenc_clk)) {
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printk(KERN_ERR "error: can't get tvenc_clk!\n");
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return IS_ERR(tvenc_clk);
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}
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if (IS_ERR(tvdac_clk)) {
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printk(KERN_ERR "error: can't get tvdac_clk!\n");
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return IS_ERR(tvdac_clk);
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}
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// pm_qos_add_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
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// PM_QOS_DEFAULT_VALUE);
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return tvenc_register_driver();
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}
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module_init(tvenc_driver_init);
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