aiot/efElectricAgingTrendMining/main.c

/*
 * linux/arch/arm/mach-at91/board-yl-9200.c
 *
 * Adapted from various board files in arch/arm/mach-at91
 *
 * Modifications for YL-9200 platform:
 *  Copyright (C) 2007 S. Birtles
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/types.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/mtd/physmap.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>

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

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

#include <mach/hardware.h>
#include <mach/at91rm9200_mc.h>
#include <mach/at91_ramc.h>
#include <mach/cpu.h>

#include "at91_aic.h"
#include "board.h"
#include "generic.h"


static void __init yl9200_init_early(void)
{
	/* Set cpu type: PQFP */
	at91rm9200_set_type(ARCH_REVISON_9200_PQFP);

	/* Initialize processor: 18.432 MHz crystal */
	at91_initialize(18432000);
}

/*
 * LEDs
 */
static struct gpio_led yl9200_leds[] = {
	{	/* D2 */
		.name			= "led2",
		.gpio			= AT91_PIN_PB17,
		.active_low		= 1,
		.default_trigger	= "timer",
	},
	{	/* D3 */
		.name			= "led3",
		.gpio			= AT91_PIN_PB16,
		.active_low		= 1,
		.default_trigger	= "heartbeat",
	},
	{	/* D4 */
		.name			= "led4",
		.gpio			= AT91_PIN_PB15,
		.active_low		= 1,
	},
	{	/* D5 */
		.name			= "led5",
		.gpio			= AT91_PIN_PB8,
		.active_low		= 1,
	}
};

/*
 * Ethernet
 */
static struct macb_platform_data __initdata yl9200_eth_data = {
	.phy_irq_pin		= AT91_PIN_PB28,
	.is_rmii		= 1,
};

/*
 * USB Host
 */
static struct at91_usbh_data __initdata yl9200_usbh_data = {
	.ports			= 1,	/* PQFP version of AT91RM9200 */
	.vbus_pin		= {-EINVAL, -EINVAL},
	.overcurrent_pin= {-EINVAL, -EINVAL},
};

/*
 * USB Device
 */
static struct at91_udc_data __initdata yl9200_udc_data = {
	.pullup_pin		= AT91_PIN_PC4,
	.vbus_pin		= AT91_PIN_PC5,
	.pullup_active_low	= 1,	/* Active Low due to PNP transistor (pg 7) */

};

/*
 * MMC
 */
static struct mci_platform_data __initdata yl9200_mci0_data = {
	.slot[0] = {
		.bus_width	= 4,
		.detect_pin	= AT91_PIN_PB9,
		.wp_pin		= -EINVAL,
	},
};

/*
 * NAND Flash
 */
static struct mtd_partition __initdata yl9200_nand_partition[] = {
	{
		.name	= "AT91 NAND partition 1, boot",
		.offset	= 0,
		.size	= SZ_256K
	},
	{
		.name	= "AT91 NAND partition 2, kernel",
		.offset	= MTDPART_OFS_NXTBLK,
		.size	= (2 * SZ_1M) - SZ_256K
	},
	{
		.name	= "AT91 NAND partition 3, filesystem",
		.offset	= MTDPART_OFS_NXTBLK,
		.size	= 14 * SZ_1M
	},
	{
		.name	= "AT91 NAND partition 4, storage",
		.offset	= MTDPART_OFS_NXTBLK,
		.size	= SZ_16M
	},
	{
		.name	= "AT91 NAND partition 5, ext-fs",
		.offset	= MTDPART_OFS_NXTBLK,
		.size	= SZ_32M
	}
};

static struct atmel_nand_data __initdata yl9200_nand_data = {
	.ale		= 6,
	.cle		= 7,
	.det_pin	= -EINVAL,
	.rdy_pin	= AT91_PIN_PC14,	/* R/!B (Sheet10) */
	.enable_pin	= AT91_PIN_PC15,	/* !CE  (Sheet10) */
	.ecc_mode	= NAND_ECC_SOFT,
	.parts		= yl9200_nand_partition,
	.num_parts	= ARRAY_SIZE(yl9200_nand_partition),
};

/*
 * NOR Flash
 */
#define YL9200_FLASH_BASE	AT91_CHIPSELECT_0
#define YL9200_FLASH_SIZE	SZ_16M

static struct mtd_partition yl9200_flash_partitions[] = {
	{
		.name		= "Bootloader",
		.offset		= 0,
		.size		= SZ_256K,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
	{
		.name		= "Kernel",
		.offset		= MTDPART_OFS_NXTBLK,
		.size		= (2 * SZ_1M) - SZ_256K
	},
	{
		.name		= "Filesystem",
		.offset		= MTDPART_OFS_NXTBLK,
		.size		= MTDPART_SIZ_FULL
	}
};

static struct physmap_flash_data yl9200_flash_data = {
	.width		= 2,
	.parts		= yl9200_flash_partitions,
	.nr_parts	= ARRAY_SIZE(yl9200_flash_partitions),
};

static struct resource yl9200_flash_resources[] = {
	{
		.start	= YL9200_FLASH_BASE,
		.end	= YL9200_FLASH_BASE + YL9200_FLASH_SIZE - 1,
		.flags	= IORESOURCE_MEM,
	}
};

static struct platform_device yl9200_flash = {
	.name		= "physmap-flash",
	.id		= 0,
	.dev		= {
				.platform_data	= &yl9200_flash_data,
			},
	.resource	= yl9200_flash_resources,
	.num_resources	= ARRAY_SIZE(yl9200_flash_resources),
};

/*
 * I2C (TWI)
 */
static struct i2c_board_info __initdata yl9200_i2c_devices[] = {
	{	/* EEPROM */
		I2C_BOARD_INFO("24c128", 0x50),
	}
};

/*
 * GPIO Buttons
*/
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button yl9200_buttons[] = {
	{
		.gpio		= AT91_PIN_PA24,
		.code		= BTN_2,
		.desc		= "SW2",
		.active_low	= 1,
		.wakeup		= 1,
	},
	{
		.gpio		= AT91_PIN_PB1,
		.code		= BTN_3,
		.desc		= "SW3",
		.active_low	= 1,
		.wakeup		= 1,
	},
	{
		.gpio		= AT91_PIN_PB2,
		.code		= BTN_4,
		.desc		= "SW4",
		.active_low	= 1,
		.wakeup		= 1,
	},
	{
		.gpio		= AT91_PIN_PB6,
		.code		= BTN_5,
		.desc		= "SW5",
		.active_low	= 1,
		.wakeup		= 1,
	}
};

static struct gpio_keys_platform_data yl9200_button_data = {
	.buttons	= yl9200_buttons,
	.nbuttons	= ARRAY_SIZE(yl9200_buttons),
};

static struct platform_device yl9200_button_device = {
	.name		= "gpio-keys",
	.id		= -1,
	.num_resources	= 0,
	.dev		= {
		.platform_data	= &yl9200_button_data,
	}
};

static void __init yl9200_add_device_buttons(void)
{
	at91_set_gpio_input(AT91_PIN_PA24, 1);	/* SW2 */
	at91_set_deglitch(AT91_PIN_PA24, 1);
	at91_set_gpio_input(AT91_PIN_PB1, 1);	/* SW3 */
	at91_set_deglitch(AT91_PIN_PB1, 1);
	at91_set_gpio_input(AT91_PIN_PB2, 1);	/* SW4 */
	at91_set_deglitch(AT91_PIN_PB2, 1);
	at91_set_gpio_input(AT91_PIN_PB6, 1);	/* SW5 */
	at91_set_deglitch(AT91_PIN_PB6, 1);

	/* Enable buttons (Sheet 5) */
	at91_set_gpio_output(AT91_PIN_PB7, 1);

	platform_device_register(&yl9200_button_device);
}
#else
static void __init yl9200_add_device_buttons(void) {}
#endif

/*
 * Touchscreen
 */
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
static int ads7843_pendown_state(void)
{
	return !at91_get_gpio_value(AT91_PIN_PB11);	/* Touchscreen PENIRQ */
}

static struct ads7846_platform_data ads_info = {
	.model			= 7843,
	.x_min			= 150,
	.x_max			= 3830,
	.y_min			= 190,
	.y_max			= 3830,
	.vref_delay_usecs	= 100,

	/* For a 8" touch-screen */