/*
* linux/arch/arm/plat-omap/devices.c
*
* Common platform device setup/initialization for OMAP1 and OMAP2
*
* 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/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>
#include <asm/arch/tc.h>
#include <asm/arch/board.h>
#include <asm/arch/mux.h>
#include <asm/arch/gpio.h>
void omap_nop_release(struct device *dev)
{
/* Nothing */
}
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
#define OMAP1_I2C_BASE 0xfffb3800
#define OMAP2_I2C_BASE1 0x48070000
#define OMAP_I2C_SIZE 0x3f
#define OMAP1_I2C_INT INT_I2C
#define OMAP2_I2C_INT1 56
static struct resource i2c_resources1[] = {
{
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM,
},
{
.start = 0,
.flags = IORESOURCE_IRQ,
},
};
/* DMA not used; works around erratum writing to non-empty i2c fifo */
static struct platform_device omap_i2c_device1 = {
.name = "i2c_omap",
.id = 1,
.dev = {
.release = omap_nop_release,
},
.num_resources = ARRAY_SIZE(i2c_resources1),
.resource = i2c_resources1,
};
/* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
static void omap_init_i2c(void)
{
if (cpu_is_omap24xx()) {
i2c_resources1[0].start = OMAP2_I2C_BASE1;
i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
i2c_resources1[1].start = OMAP2_I2C_INT1;
} else {
i2c_resources1[0].start = OMAP1_I2C_BASE;
i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
i2c_resources1[1].start = OMAP1_I2C_INT;
}
/* FIXME define and use a boot tag, in case of boards that
* either don't wire up I2C, or chips that mux it differently...
* it can include clocking and address info, maybe more.
*/
if (cpu_is_omap24xx()) {
omap_cfg_reg(M19_24XX_I2C1_SCL);
omap_cfg_reg(L15_24XX_I2C1_SDA);
} else {
omap_cfg_reg(I2C_SCL);
omap_cfg_reg(I2C_SDA);
}
(void) platform_device_register(&omap_i2c_device1);
}
#else
static inline void omap_init_i2c(void) {}
#endif
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
#ifdef CONFIG_ARCH_OMAP24XX
#define OMAP_MMC1_BASE 0x4809c000
#define OMAP_MMC1_INT 83
#else
#define OMAP_MMC1_BASE 0xfffb7800
#define OMAP_MMC1_INT INT_MMC
#endif
#define OMAP_MMC2_BASE 0xfffb7c00 /* omap16xx only */
static struct omap_mmc_conf mmc1_conf;
static u64 mmc1_dmamask = 0xffffffff;
static struct resource mmc1_resources[] = {
{
.start = IO_ADDRESS(OMAP_MMC1_BASE),
.end = IO_ADDRESS(OMAP_MMC1_BASE) + 0x7f,
.flags = IORESOURCE_MEM,
},
{
.start = OMAP_MMC1_INT,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mmc_omap_device1 = {
.name = "mmci-omap",
.id = 1,
.dev = {
.release = omap_nop_release,
.dma_mask = &mmc1_dmamask,
.platform_data = &mmc1_conf,
},
.num_resources = ARRAY_SIZE(mmc1_resources),
.resource = mmc1_resources,
};
#ifdef CONFIG_ARCH_OMAP16XX
static struct omap_mmc_conf mmc2_conf;
static u64 mmc2_dmamask = 0xffffffff;
static struct resource mmc2_resources[] = {
{
.start = IO_ADDRESS(OMAP_MMC2_BASE),
.end = IO_ADDRESS(OMAP_MMC2_BASE) + 0x7f,
.flags = IORESOURCE_MEM,
},
{
.start = INT_1610_MMC2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mmc_omap_device2 = {
.name = "mmci-omap",
.id = 2,
.dev = {
.release = omap_nop_release,
.dma_mask = &mmc2_dmamask,
.platform_data = &mmc2_conf,
},
.num_resources = ARRAY_SIZE(mmc2_resources),
.resource = mmc2_resources,
};
#endif
static void __init omap_init_mmc(void)
{
const struct omap_mmc_config *mmc_conf;
const struct omap_mmc_conf *mmc;
/* NOTE: assumes MMC was never (wrongly) enabled */
mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
if (!mmc_conf)
return;
/* block 1 is always available and has just one pinout option */
mmc = &mmc_conf->mmc[0];
if (mmc->enabled) {
if (!cpu_is_omap24xx()) {
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->wire4) {
if (!cpu_is_omap24xx()) {
omap_cfg_reg(MMC_DAT1);
/* NOTE: DAT2 can be on W10 (here) or M15 */
if (!mmc->nomux)
omap_cfg_reg(MMC_DAT2);
omap_cfg_reg(MMC_DAT3);
}
}
mmc1_conf = *mmc;
(void) platform_device_register(&mmc_omap_device1);
}
#ifdef CONFIG_ARCH_OMAP16XX
/* block 2 is on newer chips, and has many pinout options */
mmc = &mmc_conf->mmc[1];
if (mmc->enabled) {
if (!mmc->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->wire4) {
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);
mmc2_conf = *mmc;
(void) platform_device_register(&mmc_omap_device2);
}
#endif
return;
}
#else
static inline void omap_init_mmc(void) {}
#endif
#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
#ifdef CONFIG_ARCH_OMAP24XX
#define OMAP_WDT_BASE 0x48022000
#else
#define OMAP_WDT_BASE 0xfffeb000
#endif
static struct resource wdt_resources[] = {
{
.start = OMAP_WDT_BASE,
.end = OMAP_WDT_BASE + 0x4f,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device omap_wdt_device = {
.name = "omap_wdt",
.id = -1,
.dev = {
.release = omap_nop_release,
},
.num_resources = ARRAY_SIZE(wdt_resources),
.resource = wdt_resources,
};
static void omap_init_wdt(void)
{
(void) platform_device_register(&omap_wdt_device);
}
#else
static inline void omap_init_wdt(void) {}
#endif
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_OMAP_RNG) || defined(CONFIG_OMAP_RNG_MODULE)
#ifdef CONFIG_ARCH_OMAP24XX
#define OMAP_RNG_BASE 0x480A0000
#else
#define OMAP_RNG_BASE 0xfffe5000
#endif
static struct resource rng_resources[] = {
{
.start = OMAP_RNG_BASE,
.end = OMAP_RNG_BASE + 0x4f,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device omap_rng_device = {
.name = "omap_rng",
.id = -1,
.dev = {
.release = omap_nop_release,
},
.num_resources = ARRAY_SIZE(rng_resources),
.resource = rng_resources,
};
static void omap_init_rng(void)
{
(void) platform_device_register(&omap_rng_device);
}
#else
static inline void omap_init_rng(void) {}
#endif
#if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
static struct omap_lcd_config omap_fb_conf;
static u64 omap_fb_dma_mask = ~(u32)0;
static struct platform_device omap_fb_device = {
.name = "omapfb",
.id = -1,
.dev = {
.release = omap_nop_release,
.dma_mask = &omap_fb_dma_mask,
.coherent_dma_mask = ~(u32)0,
.platform_data = &omap_fb_conf,
},
.num_resources = 0,
};
static inline void omap_init_fb(void)
{
const struct omap_lcd_config *conf;
conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
if (conf != NULL)
omap_fb_conf = *conf;
platform_device_register(&omap_fb_device);
}
#else
static inline void omap_init_fb(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 omap_init_devices(void)
{
/* please keep these calls, and their implementations above,
* in alphabetical order so they're easier to sort through.
*/
omap_init_fb();
omap_init_i2c();
omap_init_mmc();
omap_init_wdt();
omap_init_rng();
return 0;
}
arch_initcall(omap_init_devices);
