linux_kernel/arch/arm/mach-at91/board-cpuat91.c

/*
 * linux/arch/arm/mach-at91/board-cpuat91.c
 *
 *  Copyright (C) 2009 Eric Benard - eric@eukrea.com
 *
 * 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/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/plat-ram.h>

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

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


static struct gpio_led cpuat91_leds[] = {
	{
		.name			= "led1",
		.default_trigger	= "heartbeat",
		.active_low		= 1,
		.gpio			= AT91_PIN_PC0,
	},
};

static void __init cpuat91_init_early(void)
{
	/* Set cpu type: PQFP */
	at91rm9200_set_type(ARCH_REVISON_9200_PQFP);

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

static struct macb_platform_data __initdata cpuat91_eth_data = {
	.phy_irq_pin	= -EINVAL,
	.is_rmii	= 1,
};

static struct at91_usbh_data __initdata cpuat91_usbh_data = {
	.ports		= 1,
	.vbus_pin	= {-EINVAL, -EINVAL},
	.overcurrent_pin= {-EINVAL, -EINVAL},
};

static struct at91_udc_data __initdata cpuat91_udc_data = {
	.vbus_pin	= AT91_PIN_PC15,
	.pullup_pin	= AT91_PIN_PC14,
};

static struct mci_platform_data __initdata cpuat91_mci0_data = {
	.slot[0] = {
		.bus_width	= 4,
		.detect_pin	= AT91_PIN_PC2,
		.wp_pin		= -EINVAL,
	},
};

static struct physmap_flash_data cpuat91_flash_data = {
	.width		= 2,
};

static struct resource cpuat91_flash_resource = {
	.start		= AT91_CHIPSELECT_0,
	.end		= AT91_CHIPSELECT_0 + SZ_16M - 1,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device cpuat91_norflash = {
	.name		= "physmap-flash",
	.id		= 0,
	.dev	= {
		.platform_data	= &cpuat91_flash_data,
	},
	.resource	= &cpuat91_flash_resource,
	.num_resources	= 1,
};

#ifdef CONFIG_MTD_PLATRAM
struct platdata_mtd_ram at91_sram_pdata = {
	.mapname	= "SRAM",
	.bankwidth	= 2,
};

static struct resource at91_sram_resource[] = {
	[0] = {
		.start = AT91RM9200_SRAM_BASE,
		.end   = AT91RM9200_SRAM_BASE + AT91RM9200_SRAM_SIZE - 1,
		.flags = IORESOURCE_MEM,
	},
};

static struct platform_device at91_sram = {
	.name		= "mtd-ram",
	.id		= 0,
	.resource	= at91_sram_resource,
	.num_resources	= ARRAY_SIZE(at91_sram_resource),
	.dev	= {
		.platform_data = &at91_sram_pdata,
	},
};
#endif /* MTD_PLATRAM */

static struct platform_device *platform_devices[] __initdata = {
	&cpuat91_norflash,
#ifdef CONFIG_MTD_PLATRAM
	&at91_sram,
#endif /* CONFIG_MTD_PLATRAM */
};

static void __init cpuat91_board_init(void)
{
	/* Serial */
	/* DBGU on ttyS0. (Rx & Tx only) */
	at91_register_uart(0, 0, 0);

	/* USART0 on ttyS1. (Rx, Tx, CTS, RTS) */
	at91_register_uart(AT91RM9200_ID_US0, 1, ATMEL_UART_CTS |
		ATMEL_UART_RTS);

	/* USART1 on ttyS2. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
	at91_register_uart(AT91RM9200_ID_US1, 2, ATMEL_UART_CTS |
		ATMEL_UART_RTS | ATMEL_UART_DTR | ATMEL_UART_DSR |
		ATMEL_UART_DCD | ATMEL_UART_RI);

	/* USART2 on ttyS3 (Rx, Tx) */
	at91_register_uart(AT91RM9200_ID_US2, 3, 0);

	/* USART3 on ttyS4 (Rx, Tx, CTS, RTS) */
	at91_register_uart(AT91RM9200_ID_US3, 4, ATMEL_UART_CTS |
		ATMEL_UART_RTS);
	at91_add_device_serial();
	/* LEDs. */
	at91_gpio_leds(cpuat91_leds, ARRAY_SIZE(cpuat91_leds));
	/* Ethernet */
	at91_add_device_eth(&cpuat91_eth_data);
	/* USB Host */
	at91_add_device_usbh(&cpuat91_usbh_data);
	/* USB Device */
	at91_add_device_udc(&cpuat91_udc_data);
	/* MMC */
	at91_add_device_mci(0, &cpuat91_mci0_data);
	/* I2C */
	at91_add_device_i2c(NULL, 0);
	/* Platform devices */
	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}

MACHINE_START(CPUAT91, "Eukrea")
	/* Maintainer: Eric Benard - EUKREA Electromatique */
	.init_time	= at91rm9200_timer_init,
	.map_io		= at91_map_io,
	.handle_irq	= at91_aic_handle_irq,
	.init_early	= cpuat91_init_early,
	.init_irq	= at91_init_irq_default,
	.init_machine	= cpuat91_board_init,
MACHINE_END