mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 01:04:19 +08:00
d052d1beff
Convert everyone who uses platform_bus_type to include linux/platform_device.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
352 lines
8.6 KiB
C
352 lines
8.6 KiB
C
/*
|
|
* 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/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>
|
|
|
|
|
|
static void omap_nop_release(struct device *dev)
|
|
{
|
|
/* Nothing */
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
|
|
|
|
#define OMAP_I2C_BASE 0xfffb3800
|
|
|
|
static struct resource i2c_resources[] = {
|
|
{
|
|
.start = OMAP_I2C_BASE,
|
|
.end = OMAP_I2C_BASE + 0x3f,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
{
|
|
.start = INT_I2C,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
/* DMA not used; works around erratum writing to non-empty i2c fifo */
|
|
|
|
static struct platform_device omap_i2c_device = {
|
|
.name = "i2c_omap",
|
|
.id = -1,
|
|
.dev = {
|
|
.release = omap_nop_release,
|
|
},
|
|
.num_resources = ARRAY_SIZE(i2c_resources),
|
|
.resource = i2c_resources,
|
|
};
|
|
|
|
static void omap_init_i2c(void)
|
|
{
|
|
/* 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.
|
|
*/
|
|
omap_cfg_reg(I2C_SCL);
|
|
omap_cfg_reg(I2C_SDA);
|
|
|
|
(void) platform_device_register(&omap_i2c_device);
|
|
}
|
|
#else
|
|
static inline void omap_init_i2c(void) {}
|
|
#endif
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#if defined(CONFIG_OMAP1610_IR) || defined(CONFIG_OMAP161O_IR_MODULE)
|
|
|
|
static u64 irda_dmamask = 0xffffffff;
|
|
|
|
static struct platform_device omap1610ir_device = {
|
|
.name = "omap1610-ir",
|
|
.id = -1,
|
|
.dev = {
|
|
.release = omap_nop_release,
|
|
.dma_mask = &irda_dmamask,
|
|
},
|
|
};
|
|
|
|
static void omap_init_irda(void)
|
|
{
|
|
/* FIXME define and use a boot tag, members something like:
|
|
* u8 uart; // uart1, or uart3
|
|
* ... but driver only handles uart3 for now
|
|
* s16 fir_sel; // gpio for SIR vs FIR
|
|
* ... may prefer a callback for SIR/MIR/FIR mode select;
|
|
* while h2 uses a GPIO, H3 uses a gpio expander
|
|
*/
|
|
if (machine_is_omap_h2()
|
|
|| machine_is_omap_h3())
|
|
(void) platform_device_register(&omap1610ir_device);
|
|
}
|
|
#else
|
|
static inline void omap_init_irda(void) {}
|
|
#endif
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
|
|
|
|
#define OMAP_MMC1_BASE 0xfffb7800
|
|
#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 = INT_MMC,
|
|
.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) {
|
|
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) {
|
|
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_RTC) || defined(CONFIG_OMAP_RTC)
|
|
|
|
#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,
|
|
.dev = {
|
|
.release = omap_nop_release,
|
|
},
|
|
.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
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#if defined(CONFIG_OMAP16XX_WATCHDOG) || defined(CONFIG_OMAP16XX_WATCHDOG_MODULE)
|
|
|
|
#define OMAP_WDT_BASE 0xfffeb000
|
|
|
|
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 = "omap1610_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
|
|
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/*
|
|
* 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_i2c();
|
|
omap_init_irda();
|
|
omap_init_mmc();
|
|
omap_init_rtc();
|
|
omap_init_wdt();
|
|
|
|
return 0;
|
|
}
|
|
arch_initcall(omap_init_devices);
|
|
|