linux-stable-rt/arch/arm/mach-s5p64x0/mach-smdk6440.c

/* linux/arch/arm/mach-s5p64x0/mach-smdk6440.c
 *
 * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
 *		http://www.samsung.com
 *
 * 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.
*/

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/pwm_backlight.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/irq.h>
#include <asm/mach-types.h>

#include <mach/hardware.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <mach/i2c.h>
#include <mach/regs-gpio.h>

#include <plat/regs-serial.h>
#include <plat/gpio-cfg.h>
#include <plat/s5p6440.h>
#include <plat/clock.h>
#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/iic.h>
#include <plat/pll.h>
#include <plat/adc.h>
#include <plat/ts.h>
#include <plat/s5p-time.h>

#define SMDK6440_UCON_DEFAULT	(S3C2410_UCON_TXILEVEL |	\
				S3C2410_UCON_RXILEVEL |		\
				S3C2410_UCON_TXIRQMODE |	\
				S3C2410_UCON_RXIRQMODE |	\
				S3C2410_UCON_RXFIFO_TOI |	\
				S3C2443_UCON_RXERR_IRQEN)

#define SMDK6440_ULCON_DEFAULT	S3C2410_LCON_CS8

#define SMDK6440_UFCON_DEFAULT	(S3C2410_UFCON_FIFOMODE |	\
				S3C2440_UFCON_TXTRIG16 |	\
				S3C2410_UFCON_RXTRIG8)

static struct s3c2410_uartcfg smdk6440_uartcfgs[] __initdata = {
	[0] = {
		.hwport		= 0,
		.flags		= 0,
		.ucon		= SMDK6440_UCON_DEFAULT,
		.ulcon		= SMDK6440_ULCON_DEFAULT,
		.ufcon		= SMDK6440_UFCON_DEFAULT,
	},
	[1] = {
		.hwport		= 1,
		.flags		= 0,
		.ucon		= SMDK6440_UCON_DEFAULT,
		.ulcon		= SMDK6440_ULCON_DEFAULT,
		.ufcon		= SMDK6440_UFCON_DEFAULT,
	},
	[2] = {
		.hwport		= 2,
		.flags		= 0,
		.ucon		= SMDK6440_UCON_DEFAULT,
		.ulcon		= SMDK6440_ULCON_DEFAULT,
		.ufcon		= SMDK6440_UFCON_DEFAULT,
	},
	[3] = {
		.hwport		= 3,
		.flags		= 0,
		.ucon		= SMDK6440_UCON_DEFAULT,
		.ulcon		= SMDK6440_ULCON_DEFAULT,
		.ufcon		= SMDK6440_UFCON_DEFAULT,
	},
};

static int smdk6440_backlight_init(struct device *dev)
{
	int ret;

	ret = gpio_request(S5P6440_GPF(15), "Backlight");
	if (ret) {
		printk(KERN_ERR "failed to request GPF for PWM-OUT1\n");
		return ret;
	}

	/* Configure GPIO pin with S5P6440_GPF15_PWM_TOUT1 */
	s3c_gpio_cfgpin(S5P6440_GPF(15), S3C_GPIO_SFN(2));

	return 0;
}

static void smdk6440_backlight_exit(struct device *dev)
{
	s3c_gpio_cfgpin(S5P6440_GPF(15), S3C_GPIO_OUTPUT);
	gpio_free(S5P6440_GPF(15));
}

static struct platform_pwm_backlight_data smdk6440_backlight_data = {
	.pwm_id		= 1,
	.max_brightness	= 255,
	.dft_brightness	= 255,
	.pwm_period_ns	= 78770,
	.init		= smdk6440_backlight_init,
	.exit		= smdk6440_backlight_exit,
};

static struct platform_device smdk6440_backlight_device = {
	.name		= "pwm-backlight",
	.dev		= {
		.parent		= &s3c_device_timer[1].dev,
		.platform_data	= &smdk6440_backlight_data,
	},
};

static struct platform_device *smdk6440_devices[] __initdata = {
	&s3c_device_adc,
	&s3c_device_rtc,
	&s3c_device_i2c0,
	&s3c_device_i2c1,
	&s3c_device_ts,
	&s3c_device_wdt,
	&samsung_asoc_dma,
	&s5p6440_device_iis,
	&s3c_device_timer[1],
	&smdk6440_backlight_device,
};

static struct s3c2410_platform_i2c s5p6440_i2c0_data __initdata = {
	.flags		= 0,
	.slave_addr	= 0x10,
	.frequency	= 100*1000,
	.sda_delay	= 100,
	.cfg_gpio	= s5p6440_i2c0_cfg_gpio,
};

static struct s3c2410_platform_i2c s5p6440_i2c1_data __initdata = {
	.flags		= 0,
	.bus_num	= 1,
	.slave_addr	= 0x10,
	.frequency	= 100*1000,
	.sda_delay	= 100,
	.cfg_gpio	= s5p6440_i2c1_cfg_gpio,
};

static struct i2c_board_info smdk6440_i2c_devs0[] __initdata = {
	{ I2C_BOARD_INFO("24c08", 0x50), },
	{ I2C_BOARD_INFO("wm8580", 0x1b), },
};

static struct i2c_board_info smdk6440_i2c_devs1[] __initdata = {
	/* To be populated */
};

static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = {
	.delay			= 10000,
	.presc			= 49,
	.oversampling_shift	= 2,
};

static void __init smdk6440_map_io(void)
{
	s5p_init_io(NULL, 0, S5P64X0_SYS_ID);
	s3c24xx_init_clocks(12000000);
	s3c24xx_init_uarts(smdk6440_uartcfgs, ARRAY_SIZE(smdk6440_uartcfgs));
	s5p_set_timer_source(S5P_PWM3, S5P_PWM4);
}

static void __init smdk6440_machine_init(void)
{
	s3c24xx_ts_set_platdata(&s3c_ts_platform);

	s3c_i2c0_set_platdata(&s5p6440_i2c0_data);
	s3c_i2c1_set_platdata(&s5p6440_i2c1_data);
	i2c_register_board_info(0, smdk6440_i2c_devs0,
			ARRAY_SIZE(smdk6440_i2c_devs0));
	i2c_register_board_info(1, smdk6440_i2c_devs1,
			ARRAY_SIZE(smdk6440_i2c_devs1));

	platform_add_devices(smdk6440_devices, ARRAY_SIZE(smdk6440_devices));
}

MACHINE_START(SMDK6440, "SMDK6440")
	/* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
	.boot_params	= S5P64X0_PA_SDRAM + 0x100,

	.init_irq	= s5p6440_init_irq,
	.map_io		= smdk6440_map_io,
	.init_machine	= smdk6440_machine_init,
	.timer		= &s5p_timer,
MACHINE_END