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alistair23-linux/arch/arm/plat-omap/devices.c

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/*
* 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <mach/hardware.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>
#include <mach/tc.h>
#include <mach/board.h>
#include <mach/mmc.h>
#include <mach/mux.h>
#include <mach/gpio.h>
#include <mach/menelaus.h>
#include <mach/mcbsp.h>
#if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
#include "../plat-omap/dsp/dsp_common.h"
static struct dsp_platform_data dsp_pdata = {
.kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
};
static struct resource omap_dsp_resources[] = {
{
.name = "dsp_mmu",
.start = -1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device omap_dsp_device = {
.name = "dsp",
.id = -1,
.num_resources = ARRAY_SIZE(omap_dsp_resources),
.resource = omap_dsp_resources,
.dev = {
.platform_data = &dsp_pdata,
},
};
static inline void omap_init_dsp(void)
{
struct resource *res;
int irq;
if (cpu_is_omap15xx())
irq = INT_1510_DSP_MMU;
else if (cpu_is_omap16xx())
irq = INT_1610_DSP_MMU;
else if (cpu_is_omap24xx())
irq = INT_24XX_DSP_MMU;
res = platform_get_resource_byname(&omap_dsp_device,
IORESOURCE_IRQ, "dsp_mmu");
res->start = irq;
platform_device_register(&omap_dsp_device);
}
int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
{
static DEFINE_MUTEX(dsp_pdata_lock);
mutex_init(&kdev->lock);
mutex_lock(&dsp_pdata_lock);
list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
mutex_unlock(&dsp_pdata_lock);
return 0;
}
EXPORT_SYMBOL(dsp_kfunc_device_register);
#else
static inline void omap_init_dsp(void) { }
#endif /* CONFIG_OMAP_DSP */
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
static void omap_init_kp(void)
{
if (machine_is_omap_h2() || machine_is_omap_h3()) {
omap_cfg_reg(F18_1610_KBC0);
omap_cfg_reg(D20_1610_KBC1);
omap_cfg_reg(D19_1610_KBC2);
omap_cfg_reg(E18_1610_KBC3);
omap_cfg_reg(C21_1610_KBC4);
omap_cfg_reg(G18_1610_KBR0);
omap_cfg_reg(F19_1610_KBR1);
omap_cfg_reg(H14_1610_KBR2);
omap_cfg_reg(E20_1610_KBR3);
omap_cfg_reg(E19_1610_KBR4);
omap_cfg_reg(N19_1610_KBR5);
} else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
omap_cfg_reg(E2_730_KBR0);
omap_cfg_reg(J7_730_KBR1);
omap_cfg_reg(E1_730_KBR2);
omap_cfg_reg(F3_730_KBR3);
omap_cfg_reg(D2_730_KBR4);
omap_cfg_reg(C2_730_KBC0);
omap_cfg_reg(D3_730_KBC1);
omap_cfg_reg(E4_730_KBC2);
omap_cfg_reg(F4_730_KBC3);
omap_cfg_reg(E3_730_KBC4);
} else if (machine_is_omap_h4()) {
omap_cfg_reg(T19_24XX_KBR0);
omap_cfg_reg(R19_24XX_KBR1);
omap_cfg_reg(V18_24XX_KBR2);
omap_cfg_reg(M21_24XX_KBR3);
omap_cfg_reg(E5__24XX_KBR4);
if (omap_has_menelaus()) {
omap_cfg_reg(B3__24XX_KBR5);
omap_cfg_reg(AA4_24XX_KBC2);
omap_cfg_reg(B13_24XX_KBC6);
} else {
omap_cfg_reg(M18_24XX_KBR5);
omap_cfg_reg(H19_24XX_KBC2);
omap_cfg_reg(N19_24XX_KBC6);
}
omap_cfg_reg(R20_24XX_KBC0);
omap_cfg_reg(M14_24XX_KBC1);
omap_cfg_reg(V17_24XX_KBC3);
omap_cfg_reg(P21_24XX_KBC4);
omap_cfg_reg(L14_24XX_KBC5);
}
}
#else
static inline void omap_init_kp(void) {}
#endif
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
static struct platform_device **omap_mcbsp_devices;
void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
int size)
{
int i;
if (size > OMAP_MAX_MCBSP_COUNT) {
printk(KERN_WARNING "Registered too many McBSPs platform_data."
" Using maximum (%d) available.\n",
OMAP_MAX_MCBSP_COUNT);
size = OMAP_MAX_MCBSP_COUNT;
}
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;
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;
}
}
#else
void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
int size)
{ }
#endif
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
#define OMAP_MMC1_BASE 0x4809c000
#define OMAP_MMC1_END (OMAP_MMC1_BASE + 0x1fc)
#define OMAP_MMC1_INT INT_24XX_MMC_IRQ
#define OMAP_MMC2_BASE 0x480b4000
#define OMAP_MMC2_END (OMAP_MMC2_BASE + 0x1fc)
#define OMAP_MMC2_INT INT_24XX_MMC2_IRQ
#else
#define OMAP_MMC1_BASE 0xfffb7800
#define OMAP_MMC1_END (OMAP_MMC1_BASE + 0x7f)
#define OMAP_MMC1_INT INT_MMC
#define OMAP_MMC2_BASE 0xfffb7c00 /* omap16xx only */
#define OMAP_MMC2_END (OMAP_MMC2_BASE + 0x7f)
#define OMAP_MMC2_INT INT_1610_MMC2
#endif
static struct omap_mmc_platform_data mmc1_data;
static u64 mmc1_dmamask = 0xffffffff;
static struct resource mmc1_resources[] = {
{
.start = OMAP_MMC1_BASE,
.end = OMAP_MMC1_END,
.flags = IORESOURCE_MEM,
},
{
.start = OMAP_MMC1_INT,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mmc_omap_device1 = {
.name = "mmci-omap",
.id = 1,
.dev = {
.dma_mask = &mmc1_dmamask,
.platform_data = &mmc1_data,
},
.num_resources = ARRAY_SIZE(mmc1_resources),
.resource = mmc1_resources,
};
#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
defined(CONFIG_ARCH_OMAP34XX)
static struct omap_mmc_platform_data mmc2_data;
static u64 mmc2_dmamask = 0xffffffff;
static struct resource mmc2_resources[] = {
{
.start = OMAP_MMC2_BASE,
.end = OMAP_MMC2_END,
.flags = IORESOURCE_MEM,
},
{
.start = OMAP_MMC2_INT,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mmc_omap_device2 = {
.name = "mmci-omap",
.id = 2,
.dev = {
.dma_mask = &mmc2_dmamask,
.platform_data = &mmc2_data,
},
.num_resources = ARRAY_SIZE(mmc2_resources),
.resource = mmc2_resources,
};
#endif
static inline void omap_init_mmc_conf(const struct omap_mmc_config *mmc_conf)
{
if (cpu_is_omap2430() || cpu_is_omap34xx())
return;
if (mmc_conf->mmc[0].enabled) {
if (cpu_is_omap24xx()) {
omap_cfg_reg(H18_24XX_MMC_CMD);
omap_cfg_reg(H15_24XX_MMC_CLKI);
omap_cfg_reg(G19_24XX_MMC_CLKO);
omap_cfg_reg(F20_24XX_MMC_DAT0);
omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
} 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_conf->mmc[0].wire4) {
if (cpu_is_omap24xx()) {
omap_cfg_reg(H14_24XX_MMC_DAT1);
omap_cfg_reg(E19_24XX_MMC_DAT2);
omap_cfg_reg(D19_24XX_MMC_DAT3);
omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
} else {
omap_cfg_reg(MMC_DAT1);
/* NOTE: DAT2 can be on W10 (here) or M15 */
if (!mmc_conf->mmc[0].nomux)
omap_cfg_reg(MMC_DAT2);
omap_cfg_reg(MMC_DAT3);
}
}
#if defined(CONFIG_ARCH_OMAP2420)
if (mmc_conf->mmc[0].internal_clock) {
/*
* Use internal loop-back in MMC/SDIO
* Module Input Clock selection
*/
if (cpu_is_omap24xx()) {
u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
v |= (1 << 24); /* not used in 243x */
omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
}
}
#endif
}
#ifdef CONFIG_ARCH_OMAP16XX
/* block 2 is on newer chips, and has many pinout options */
if (mmc_conf->mmc[1].enabled) {
if (!mmc_conf->mmc[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_conf->mmc[1].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);
}
#endif
}
static void __init omap_init_mmc(void)
{
const struct omap_mmc_config *mmc_conf;
/* NOTE: assumes MMC was never (wrongly) enabled */
mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
if (!mmc_conf)
return;
omap_init_mmc_conf(mmc_conf);
if (mmc_conf->mmc[0].enabled) {
mmc1_data.conf = mmc_conf->mmc[0];
(void) platform_device_register(&mmc_omap_device1);
}
#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
defined(CONFIG_ARCH_OMAP34XX)
if (mmc_conf->mmc[1].enabled) {
mmc2_data.conf = mmc_conf->mmc[1];
(void) platform_device_register(&mmc_omap_device2);
}
#endif
}
void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info)
{
switch (host) {
case 1:
mmc1_data = *info;
break;
#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
defined(CONFIG_ARCH_OMAP34XX)
case 2:
mmc2_data = *info;
break;
#endif
default:
BUG();
}
}
#else
static inline void omap_init_mmc(void) {}
void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info) {}
#endif
/*-------------------------------------------------------------------------*/
/* Numbering for the SPI-capable controllers when used for SPI:
* spi = 1
* uwire = 2
* mmc1..2 = 3..4
* mcbsp1..3 = 5..7
*/
#if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
#define OMAP_UWIRE_BASE 0xfffb3000
static struct resource uwire_resources[] = {
{
.start = OMAP_UWIRE_BASE,
.end = OMAP_UWIRE_BASE + 0x20,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device omap_uwire_device = {
.name = "omap_uwire",
.id = -1,
.num_resources = ARRAY_SIZE(uwire_resources),
.resource = uwire_resources,
};
static void omap_init_uwire(void)
{
/* FIXME define and use a boot tag; not all boards will be hooking
* up devices to the microwire controller, and multi-board configs
* mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
*/
/* board-specific code must configure chipselects (only a few
* are normally used) and SCLK/SDI/SDO (each has two choices).
*/
(void) platform_device_register(&omap_uwire_device);
}
#else
static inline void omap_init_uwire(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,
.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_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_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,
.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
/*
* 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)
{
/*
* Need to enable relevant once for 2430 SDP
*/
#ifndef CONFIG_MACH_OMAP_2430SDP
/* please keep these calls, and their implementations above,
* in alphabetical order so they're easier to sort through.
*/
omap_init_dsp();
omap_init_kp();
omap_init_mmc();
omap_init_uwire();
omap_init_wdt();
omap_init_rng();
#endif
return 0;
}
arch_initcall(omap_init_devices);
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