kernel-hacking-2024-linux-steffo/arch/arm/mach-s3c64xx/mach-smartq7.c

/*
 * linux/arch/arm/mach-s3c64xx/mach-smartq7.c
 *
 * Copyright (C) 2010 Maurus Cuelenaere
 *
 * 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/fb.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
#include <linux/i2c-gpio.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/leds.h>
#include <linux/platform_device.h>

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

#include <mach/map.h>
#include <mach/regs-fb.h>
#include <mach/regs-gpio.h>
#include <mach/s3c6410.h>

#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/fb.h>
#include <plat/gpio-cfg.h>

#include "mach-smartq.h"

static void __init smartq7_lcd_setup_gpio(void)
{
	gpio_request(S3C64XX_GPM(0), "LCD CSB pin");
	gpio_request(S3C64XX_GPM(3), "LCD power");
	gpio_request(S3C64XX_GPM(4), "LCD power status");

	/* turn power off */
	gpio_direction_output(S3C64XX_GPM(0), 1);
	gpio_direction_output(S3C64XX_GPM(3), 0);
	gpio_direction_input(S3C64XX_GPM(4));
}

static struct i2c_gpio_platform_data smartq7_lcd_control = {
	.sda_pin		= S3C64XX_GPM(2),
	.scl_pin		= S3C64XX_GPM(1),
	.sda_is_open_drain	= 1,
	.scl_is_open_drain	= 1,
};

static struct platform_device smartq7_lcd_control_device = {
	.name			= "i2c-gpio",
	.id			= 1,
	.dev.platform_data	= &smartq7_lcd_control,
};

static struct gpio_led smartq7_leds[] __initdata = {
	{
		.name			= "smartq7:red",
		.active_low		= 1,
		.gpio			= S3C64XX_GPN(8),
	},
	{
		.name			= "smartq7:green",
		.active_low		= 1,
		.gpio			= S3C64XX_GPN(9),
	},
};

static struct gpio_led_platform_data smartq7_led_data = {
	.num_leds = ARRAY_SIZE(smartq7_leds),
	.leds = smartq7_leds,
};

static struct platform_device smartq7_leds_device = {
	.name			= "leds-gpio",
	.id			= -1,
	.dev.platform_data	= &smartq7_led_data,
};

/* Labels according to the SmartQ manual */
static struct gpio_keys_button smartq7_buttons[] = {
	{
		.gpio			= S3C64XX_GPL(14),
		.code			= KEY_POWER,
		.desc			= "Power",
		.active_low		= 1,
		.debounce_interval	= 5,
		.type                   = EV_KEY,
	},
	{
		.gpio			= S3C64XX_GPN(2),
		.code			= KEY_FN,
		.desc			= "Function",
		.active_low		= 1,
		.debounce_interval	= 5,
		.type                   = EV_KEY,
	},
	{
		.gpio			= S3C64XX_GPN(3),
		.code			= KEY_KPMINUS,
		.desc			= "Minus",
		.active_low		= 1,
		.debounce_interval	= 5,
		.type                   = EV_KEY,
	},
	{
		.gpio			= S3C64XX_GPN(4),
		.code			= KEY_KPPLUS,
		.desc			= "Plus",
		.active_low		= 1,
		.debounce_interval	= 5,
		.type                   = EV_KEY,
	},
	{
		.gpio			= S3C64XX_GPN(12),
		.code			= KEY_ENTER,
		.desc			= "Enter",
		.active_low		= 1,
		.debounce_interval	= 5,
		.type                   = EV_KEY,
	},
	{
		.gpio			= S3C64XX_GPN(15),
		.code			= KEY_ESC,
		.desc			= "Cancel",
		.active_low		= 1,
		.debounce_interval	= 5,
		.type                   = EV_KEY,
	},
};

static struct gpio_keys_platform_data smartq7_buttons_data  = {
	.buttons	= smartq7_buttons,
	.nbuttons	= ARRAY_SIZE(smartq7_buttons),
};

static struct platform_device smartq7_buttons_device  = {
	.name		= "gpio-keys",
	.id		= 0,
	.num_resources	= 0,
	.dev		= {
		.platform_data	= &smartq7_buttons_data,
	}
};

static struct s3c_fb_pd_win smartq7_fb_win0 = {
	.win_mode	= {
		.left_margin	= 3,
		.right_margin	= 5,
		.upper_margin	= 1,
		.lower_margin	= 20,
		.hsync_len	= 10,
		.vsync_len	= 3,
		.xres		= 800,
		.yres		= 480,
		.refresh	= 80,
	},
	.max_bpp	= 32,
	.default_bpp	= 16,
};

static struct s3c_fb_platdata smartq7_lcd_pdata __initdata = {
	.setup_gpio	= s3c64xx_fb_gpio_setup_24bpp,
	.win[0]		= &smartq7_fb_win0,
	.vidcon0	= VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
	.vidcon1	= VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC |
			  VIDCON1_INV_VCLK,
};

static struct platform_device *smartq7_devices[] __initdata = {
	&smartq7_leds_device,
	&smartq7_buttons_device,
	&smartq7_lcd_control_device,
};

static void __init smartq7_machine_init(void)
{
	s3c_fb_set_platdata(&smartq7_lcd_pdata);

	smartq_machine_init();
	smartq7_lcd_setup_gpio();

	platform_add_devices(smartq7_devices, ARRAY_SIZE(smartq7_devices));
}

MACHINE_START(SMARTQ7, "SmartQ 7")
	/* Maintainer: Maurus Cuelenaere <mcuelenaere AT gmail DOT com> */
	.phys_io	= S3C_PA_UART & 0xfff00000,
	.io_pg_offst	= (((u32)S3C_VA_UART) >> 18) & 0xfffc,
	.boot_params	= S3C64XX_PA_SDRAM + 0x100,
	.init_irq	= s3c6410_init_irq,
	.map_io		= smartq_map_io,
	.init_machine	= smartq7_machine_init,
	.timer		= &s3c24xx_timer,
MACHINE_END