linux/arch/arm/mach-omap1/mcbsp.c
Linus Torvalds d61b7a572b ARM: global cleanups
Quite a bit of code gets removed, and some stuff moved around, mostly
 the old samsung s3c24xx stuff. There should be no functional changes
 in this series otherwise. Some cleanups have dependencies on other
 arm-soc branches and will be sent in the second round.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: global cleanups" from Arnd Bergmann:
 "Quite a bit of code gets removed, and some stuff moved around, mostly
  the old samsung s3c24xx stuff.  There should be no functional changes
  in this series otherwise.  Some cleanups have dependencies on other
  arm-soc branches and will be sent in the second round.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fixed up trivial conflicts mainly due to #include's being changes on
both sides.

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (121 commits)
  ep93xx: Remove unnecessary includes of ep93xx-regs.h
  ep93xx: Move EP93XX_SYSCON defines to SoC private header
  ep93xx: Move crunch code to mach-ep93xx directory
  ep93xx: Make syscon access functions private to SoC
  ep93xx: Configure GPIO ports in core code
  ep93xx: Move peripheral defines to local SoC header
  ep93xx: Convert the watchdog driver into a platform device.
  ep93xx: Use ioremap for backlight driver
  ep93xx: Move GPIO defines to gpio-ep93xx.h
  ep93xx: Don't use system controller defines in audio drivers
  ep93xx: Move PHYS_BASE defines to local SoC header file
  ARM: EXYNOS: Add clock register addresses for EXYNOS4X12 bus devfreq driver
  ARM: EXYNOS: add clock registers for exynos4x12-cpufreq
  PM / devfreq: update the name of EXYNOS clock registers that were omitted
  PM / devfreq: update the name of EXYNOS clock register
  ARM: EXYNOS: change the prefix S5P_ to EXYNOS4_ for clock
  ARM: EXYNOS: use static declaration on regarding clock
  ARM: EXYNOS: replace clock.c for other new EXYNOS SoCs
  ARM: OMAP2+: Fix build error after merge
  ARM: S3C24XX: remove call to s3c24xx_setup_clocks
  ...
2012-03-27 16:03:32 -07:00

446 lines
8.9 KiB
C

/*
* linux/arch/arm/mach-omap1/mcbsp.c
*
* Copyright (C) 2008 Instituto Nokia de Tecnologia
* Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Multichannel mode not supported.
*/
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <plat/dma.h>
#include <plat/mux.h>
#include <plat/cpu.h>
#include <plat/mcbsp.h>
#include <mach/irqs.h>
#include "iomap.h"
#define DPS_RSTCT2_PER_EN (1 << 0)
#define DSP_RSTCT2_WD_PER_EN (1 << 1)
static int dsp_use;
static struct clk *api_clk;
static struct clk *dsp_clk;
static struct platform_device **omap_mcbsp_devices;
static void omap1_mcbsp_request(unsigned int id)
{
/*
* On 1510, 1610 and 1710, McBSP1 and McBSP3
* are DSP public peripherals.
*/
if (id == 0 || id == 2) {
if (dsp_use++ == 0) {
api_clk = clk_get(NULL, "api_ck");
dsp_clk = clk_get(NULL, "dsp_ck");
if (!IS_ERR(api_clk) && !IS_ERR(dsp_clk)) {
clk_enable(api_clk);
clk_enable(dsp_clk);
/*
* DSP external peripheral reset
* FIXME: This should be moved to dsp code
*/
__raw_writew(__raw_readw(DSP_RSTCT2) | DPS_RSTCT2_PER_EN |
DSP_RSTCT2_WD_PER_EN, DSP_RSTCT2);
}
}
}
}
static void omap1_mcbsp_free(unsigned int id)
{
if (id == 0 || id == 2) {
if (--dsp_use == 0) {
if (!IS_ERR(api_clk)) {
clk_disable(api_clk);
clk_put(api_clk);
}
if (!IS_ERR(dsp_clk)) {
clk_disable(dsp_clk);
clk_put(dsp_clk);
}
}
}
}
static struct omap_mcbsp_ops omap1_mcbsp_ops = {
.request = omap1_mcbsp_request,
.free = omap1_mcbsp_free,
};
#define OMAP7XX_MCBSP1_BASE 0xfffb1000
#define OMAP7XX_MCBSP2_BASE 0xfffb1800
#define OMAP1510_MCBSP1_BASE 0xe1011800
#define OMAP1510_MCBSP2_BASE 0xfffb1000
#define OMAP1510_MCBSP3_BASE 0xe1017000
#define OMAP1610_MCBSP1_BASE 0xe1011800
#define OMAP1610_MCBSP2_BASE 0xfffb1000
#define OMAP1610_MCBSP3_BASE 0xe1017000
#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
struct resource omap7xx_mcbsp_res[][6] = {
{
{
.start = OMAP7XX_MCBSP1_BASE,
.end = OMAP7XX_MCBSP1_BASE + SZ_256,
.flags = IORESOURCE_MEM,
},
{
.name = "rx",
.start = INT_7XX_McBSP1RX,
.flags = IORESOURCE_IRQ,
},
{
.name = "tx",
.start = INT_7XX_McBSP1TX,
.flags = IORESOURCE_IRQ,
},
{
.name = "rx",
.start = OMAP_DMA_MCBSP1_RX,
.flags = IORESOURCE_DMA,
},
{
.name = "tx",
.start = OMAP_DMA_MCBSP1_TX,
.flags = IORESOURCE_DMA,
},
},
{
{
.start = OMAP7XX_MCBSP2_BASE,
.end = OMAP7XX_MCBSP2_BASE + SZ_256,
.flags = IORESOURCE_MEM,
},
{
.name = "rx",
.start = INT_7XX_McBSP2RX,
.flags = IORESOURCE_IRQ,
},
{
.name = "tx",
.start = INT_7XX_McBSP2TX,
.flags = IORESOURCE_IRQ,
},
{
.name = "rx",
.start = OMAP_DMA_MCBSP3_RX,
.flags = IORESOURCE_DMA,
},
{
.name = "tx",
.start = OMAP_DMA_MCBSP3_TX,
.flags = IORESOURCE_DMA,
},
},
};
#define omap7xx_mcbsp_res_0 omap7xx_mcbsp_res[0]
static struct omap_mcbsp_platform_data omap7xx_mcbsp_pdata[] = {
{
.ops = &omap1_mcbsp_ops,
},
{
.ops = &omap1_mcbsp_ops,
},
};
#define OMAP7XX_MCBSP_RES_SZ ARRAY_SIZE(omap7xx_mcbsp_res[1])
#define OMAP7XX_MCBSP_COUNT ARRAY_SIZE(omap7xx_mcbsp_res)
#else
#define omap7xx_mcbsp_res_0 NULL
#define omap7xx_mcbsp_pdata NULL
#define OMAP7XX_MCBSP_RES_SZ 0
#define OMAP7XX_MCBSP_COUNT 0
#endif
#ifdef CONFIG_ARCH_OMAP15XX
struct resource omap15xx_mcbsp_res[][6] = {
{
{
.start = OMAP1510_MCBSP1_BASE,
.end = OMAP1510_MCBSP1_BASE + SZ_256,
.flags = IORESOURCE_MEM,
},
{
.name = "rx",
.start = INT_McBSP1RX,
.flags = IORESOURCE_IRQ,
},
{
.name = "tx",
.start = INT_McBSP1TX,
.flags = IORESOURCE_IRQ,
},
{
.name = "rx",
.start = OMAP_DMA_MCBSP1_RX,
.flags = IORESOURCE_DMA,
},
{
.name = "tx",
.start = OMAP_DMA_MCBSP1_TX,
.flags = IORESOURCE_DMA,
},
},
{
{
.start = OMAP1510_MCBSP2_BASE,
.end = OMAP1510_MCBSP2_BASE + SZ_256,
.flags = IORESOURCE_MEM,
},
{
.name = "rx",
.start = INT_1510_SPI_RX,
.flags = IORESOURCE_IRQ,
},
{
.name = "tx",
.start = INT_1510_SPI_TX,
.flags = IORESOURCE_IRQ,
},
{
.name = "rx",
.start = OMAP_DMA_MCBSP2_RX,
.flags = IORESOURCE_DMA,
},
{
.name = "tx",
.start = OMAP_DMA_MCBSP2_TX,
.flags = IORESOURCE_DMA,
},
},
{
{
.start = OMAP1510_MCBSP3_BASE,
.end = OMAP1510_MCBSP3_BASE + SZ_256,
.flags = IORESOURCE_MEM,
},
{
.name = "rx",
.start = INT_McBSP3RX,
.flags = IORESOURCE_IRQ,
},
{
.name = "tx",
.start = INT_McBSP3TX,
.flags = IORESOURCE_IRQ,
},
{
.name = "rx",
.start = OMAP_DMA_MCBSP3_RX,
.flags = IORESOURCE_DMA,
},
{
.name = "tx",
.start = OMAP_DMA_MCBSP3_TX,
.flags = IORESOURCE_DMA,
},
},
};
#define omap15xx_mcbsp_res_0 omap15xx_mcbsp_res[0]
static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
{
.ops = &omap1_mcbsp_ops,
},
{
.ops = &omap1_mcbsp_ops,
},
{
.ops = &omap1_mcbsp_ops,
},
};
#define OMAP15XX_MCBSP_RES_SZ ARRAY_SIZE(omap15xx_mcbsp_res[1])
#define OMAP15XX_MCBSP_COUNT ARRAY_SIZE(omap15xx_mcbsp_res)
#else
#define omap15xx_mcbsp_res_0 NULL
#define omap15xx_mcbsp_pdata NULL
#define OMAP15XX_MCBSP_RES_SZ 0
#define OMAP15XX_MCBSP_COUNT 0
#endif
#ifdef CONFIG_ARCH_OMAP16XX
struct resource omap16xx_mcbsp_res[][6] = {
{
{
.start = OMAP1610_MCBSP1_BASE,
.end = OMAP1610_MCBSP1_BASE + SZ_256,
.flags = IORESOURCE_MEM,
},
{
.name = "rx",
.start = INT_McBSP1RX,
.flags = IORESOURCE_IRQ,
},
{
.name = "tx",
.start = INT_McBSP1TX,
.flags = IORESOURCE_IRQ,
},
{
.name = "rx",
.start = OMAP_DMA_MCBSP1_RX,
.flags = IORESOURCE_DMA,
},
{
.name = "tx",
.start = OMAP_DMA_MCBSP1_TX,
.flags = IORESOURCE_DMA,
},
},
{
{
.start = OMAP1610_MCBSP2_BASE,
.end = OMAP1610_MCBSP2_BASE + SZ_256,
.flags = IORESOURCE_MEM,
},
{
.name = "rx",
.start = INT_1610_McBSP2_RX,
.flags = IORESOURCE_IRQ,
},
{
.name = "tx",
.start = INT_1610_McBSP2_TX,
.flags = IORESOURCE_IRQ,
},
{
.name = "rx",
.start = OMAP_DMA_MCBSP2_RX,
.flags = IORESOURCE_DMA,
},
{
.name = "tx",
.start = OMAP_DMA_MCBSP2_TX,
.flags = IORESOURCE_DMA,
},
},
{
{
.start = OMAP1610_MCBSP3_BASE,
.end = OMAP1610_MCBSP3_BASE + SZ_256,
.flags = IORESOURCE_MEM,
},
{
.name = "rx",
.start = INT_McBSP3RX,
.flags = IORESOURCE_IRQ,
},
{
.name = "tx",
.start = INT_McBSP3TX,
.flags = IORESOURCE_IRQ,
},
{
.name = "rx",
.start = OMAP_DMA_MCBSP3_RX,
.flags = IORESOURCE_DMA,
},
{
.name = "tx",
.start = OMAP_DMA_MCBSP3_TX,
.flags = IORESOURCE_DMA,
},
},
};
#define omap16xx_mcbsp_res_0 omap16xx_mcbsp_res[0]
static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
{
.ops = &omap1_mcbsp_ops,
},
{
.ops = &omap1_mcbsp_ops,
},
{
.ops = &omap1_mcbsp_ops,
},
};
#define OMAP16XX_MCBSP_RES_SZ ARRAY_SIZE(omap16xx_mcbsp_res[1])
#define OMAP16XX_MCBSP_COUNT ARRAY_SIZE(omap16xx_mcbsp_res)
#else
#define omap16xx_mcbsp_res_0 NULL
#define omap16xx_mcbsp_pdata NULL
#define OMAP16XX_MCBSP_RES_SZ 0
#define OMAP16XX_MCBSP_COUNT 0
#endif
static void omap_mcbsp_register_board_cfg(struct resource *res, int res_count,
struct omap_mcbsp_platform_data *config, int size)
{
int i;
omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
GFP_KERNEL);
if (!omap_mcbsp_devices) {
printk(KERN_ERR "Could not register McBSP devices\n");
return;
}
for (i = 0; i < size; i++) {
struct platform_device *new_mcbsp;
int ret;
new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
if (!new_mcbsp)
continue;
platform_device_add_resources(new_mcbsp, &res[i * res_count],
res_count);
config[i].reg_size = 2;
config[i].reg_step = 2;
new_mcbsp->dev.platform_data = &config[i];
ret = platform_device_add(new_mcbsp);
if (ret) {
platform_device_put(new_mcbsp);
continue;
}
omap_mcbsp_devices[i] = new_mcbsp;
}
}
static int __init omap1_mcbsp_init(void)
{
if (!cpu_class_is_omap1())
return -ENODEV;
if (cpu_is_omap7xx())
omap_mcbsp_register_board_cfg(omap7xx_mcbsp_res_0,
OMAP7XX_MCBSP_RES_SZ,
omap7xx_mcbsp_pdata,
OMAP7XX_MCBSP_COUNT);
if (cpu_is_omap15xx())
omap_mcbsp_register_board_cfg(omap15xx_mcbsp_res_0,
OMAP15XX_MCBSP_RES_SZ,
omap15xx_mcbsp_pdata,
OMAP15XX_MCBSP_COUNT);
if (cpu_is_omap16xx())
omap_mcbsp_register_board_cfg(omap16xx_mcbsp_res_0,
OMAP16XX_MCBSP_RES_SZ,
omap16xx_mcbsp_pdata,
OMAP16XX_MCBSP_COUNT);
return 0;
}
arch_initcall(omap1_mcbsp_init);