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OpenCloudOS-Kernel/arch/arm/mach-omap1/devices.c

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/*
* linux/arch/arm/mach-omap1/devices.c
*
* OMAP1 platform device setup/initialization
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/spi/spi.h>
#include <mach/hardware.h>
#include <asm/mach/map.h>
#include <plat/tc.h>
#include <plat/board.h>
#include <plat/mux.h>
#include <mach/gpio.h>
#include <plat/mmc.h>
#include <plat/omap7xx.h>
#include <plat/mcbsp.h>
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
#define OMAP_RTC_BASE 0xfffb4800
static struct resource rtc_resources[] = {
{
.start = OMAP_RTC_BASE,
.end = OMAP_RTC_BASE + 0x5f,
.flags = IORESOURCE_MEM,
},
{
.start = INT_RTC_TIMER,
.flags = IORESOURCE_IRQ,
},
{
.start = INT_RTC_ALARM,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device omap_rtc_device = {
.name = "omap_rtc",
.id = -1,
.num_resources = ARRAY_SIZE(rtc_resources),
.resource = rtc_resources,
};
static void omap_init_rtc(void)
{
(void) platform_device_register(&omap_rtc_device);
}
#else
static inline void omap_init_rtc(void) {}
#endif
static inline void omap_init_mbox(void) { }
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
int controller_nr)
{
if (controller_nr == 0) {
if (cpu_is_omap7xx()) {
omap_cfg_reg(MMC_7XX_CMD);
omap_cfg_reg(MMC_7XX_CLK);
omap_cfg_reg(MMC_7XX_DAT0);
} else {
omap_cfg_reg(MMC_CMD);
omap_cfg_reg(MMC_CLK);
omap_cfg_reg(MMC_DAT0);
}
if (cpu_is_omap1710()) {
omap_cfg_reg(M15_1710_MMC_CLKI);
omap_cfg_reg(P19_1710_MMC_CMDDIR);
omap_cfg_reg(P20_1710_MMC_DATDIR0);
}
if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
omap_cfg_reg(MMC_DAT1);
/* NOTE: DAT2 can be on W10 (here) or M15 */
if (!mmc_controller->slots[0].nomux)
omap_cfg_reg(MMC_DAT2);
omap_cfg_reg(MMC_DAT3);
}
}
/* Block 2 is on newer chips, and has many pinout options */
if (cpu_is_omap16xx() && controller_nr == 1) {
if (!mmc_controller->slots[1].nomux) {
omap_cfg_reg(Y8_1610_MMC2_CMD);
omap_cfg_reg(Y10_1610_MMC2_CLK);
omap_cfg_reg(R18_1610_MMC2_CLKIN);
omap_cfg_reg(W8_1610_MMC2_DAT0);
if (mmc_controller->slots[1].wires == 4) {
omap_cfg_reg(V8_1610_MMC2_DAT1);
omap_cfg_reg(W15_1610_MMC2_DAT2);
omap_cfg_reg(R10_1610_MMC2_DAT3);
}
/* These are needed for the level shifter */
omap_cfg_reg(V9_1610_MMC2_CMDDIR);
omap_cfg_reg(V5_1610_MMC2_DATDIR0);
omap_cfg_reg(W19_1610_MMC2_DATDIR1);
}
/* Feedback clock must be set on OMAP-1710 MMC2 */
if (cpu_is_omap1710())
omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
MOD_CONF_CTRL_1);
}
}
void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
int nr_controllers)
{
int i;
for (i = 0; i < nr_controllers; i++) {
unsigned long base, size;
unsigned int irq = 0;
if (!mmc_data[i])
continue;
omap1_mmc_mux(mmc_data[i], i);
switch (i) {
case 0:
base = OMAP1_MMC1_BASE;
irq = INT_MMC;
break;
case 1:
if (!cpu_is_omap16xx())
return;
base = OMAP1_MMC2_BASE;
irq = INT_1610_MMC2;
break;
default:
continue;
}
size = OMAP1_MMC_SIZE;
omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
};
}
#endif
/*-------------------------------------------------------------------------*/
/* OMAP7xx SPI support */
#if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
struct platform_device omap_spi1 = {
.name = "omap1_spi100k",
.id = 1,
};
struct platform_device omap_spi2 = {
.name = "omap1_spi100k",
.id = 2,
};
static void omap_init_spi100k(void)
{
omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
if (omap_spi1.dev.platform_data)
platform_device_register(&omap_spi1);
omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
if (omap_spi2.dev.platform_data)
platform_device_register(&omap_spi2);
}
#else
static inline void omap_init_spi100k(void)
{
}
#endif
#define OMAP1_CAMERA_BASE 0xfffb6800
#define OMAP1_CAMERA_IOSIZE 0x1c
static struct resource omap1_camera_resources[] = {
[0] = {
.start = OMAP1_CAMERA_BASE,
.end = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = INT_CAMERA,
.flags = IORESOURCE_IRQ,
},
};
static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
static struct platform_device omap1_camera_device = {
.name = "omap1-camera",
.id = 0, /* This is used to put cameras on this interface */
.dev = {
.dma_mask = &omap1_camera_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = ARRAY_SIZE(omap1_camera_resources),
.resource = omap1_camera_resources,
};
void __init omap1_camera_init(void *info)
{
struct platform_device *dev = &omap1_camera_device;
int ret;
dev->dev.platform_data = info;
ret = platform_device_register(dev);
if (ret)
dev_err(&dev->dev, "unable to register device: %d\n", ret);
}
/*-------------------------------------------------------------------------*/
static inline void omap_init_sti(void) {}
#if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
static struct platform_device omap_pcm = {
.name = "omap-pcm-audio",
.id = -1,
};
OMAP_MCBSP_PLATFORM_DEVICE(1);
OMAP_MCBSP_PLATFORM_DEVICE(2);
OMAP_MCBSP_PLATFORM_DEVICE(3);
static void omap_init_audio(void)
{
platform_device_register(&omap_mcbsp1);
platform_device_register(&omap_mcbsp2);
if (!cpu_is_omap7xx())
platform_device_register(&omap_mcbsp3);
platform_device_register(&omap_pcm);
}
#else
static inline void omap_init_audio(void) {}
#endif
/*-------------------------------------------------------------------------*/
/*
* This gets called after board-specific INIT_MACHINE, and initializes most
* on-chip peripherals accessible on this board (except for few like USB):
*
* (a) Does any "standard config" pin muxing needed. Board-specific
* code will have muxed GPIO pins and done "nonstandard" setup;
* that code could live in the boot loader.
* (b) Populating board-specific platform_data with the data drivers
* rely on to handle wiring variations.
* (c) Creating platform devices as meaningful on this board and
* with this kernel configuration.
*
* Claiming GPIOs, and setting their direction and initial values, is the
* responsibility of the device drivers. So is responding to probe().
*
* Board-specific knowlege like creating devices or pin setup is to be
* kept out of drivers as much as possible. In particular, pin setup
* may be handled by the boot loader, and drivers should expect it will
* normally have been done by the time they're probed.
*/
static int __init omap1_init_devices(void)
{
/* please keep these calls, and their implementations above,
* in alphabetical order so they're easier to sort through.
*/
omap_init_mbox();
omap_init_rtc();
omap_init_spi100k();
omap_init_sti();
omap_init_audio();
return 0;
}
arch_initcall(omap1_init_devices);
#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
static struct resource wdt_resources[] = {
{
.start = 0xfffeb000,
.end = 0xfffeb07F,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device omap_wdt_device = {
.name = "omap_wdt",
.id = -1,
.num_resources = ARRAY_SIZE(wdt_resources),
.resource = wdt_resources,
};
static int __init omap_init_wdt(void)
{
if (!cpu_is_omap16xx())
return -ENODEV;
return platform_device_register(&omap_wdt_device);
}
subsys_initcall(omap_init_wdt);
#endif
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