linux_dsm_epyc7002/arch/arm/mach-at91/board-csb337.c

/*
 * linux/arch/arm/mach-at91/board-csb337.c
 *
 *  Copyright (C) 2005 SAN People
 *
 * 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/spi/spi.h>
#include <linux/mtd/physmap.h>
#include <linux/input.h>
#include <linux/gpio_keys.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 "at91_aic.h"
#include "board.h"
#include "generic.h"


static void __init csb337_init_early(void)
{
	/* Initialize processor: 3.6864 MHz crystal */
	at91_initialize(3686400);
}

static struct macb_platform_data __initdata csb337_eth_data = {
	.phy_irq_pin	= AT91_PIN_PC2,
	.is_rmii	= 0,
	/* The CSB337 bootloader stores the MAC the wrong-way around */
	.rev_eth_addr	= 1,
};

static struct at91_usbh_data __initdata csb337_usbh_data = {
	.ports		= 2,
	.vbus_pin	= {-EINVAL, -EINVAL},
	.overcurrent_pin= {-EINVAL, -EINVAL},
};

static struct at91_udc_data __initdata csb337_udc_data = {
	.pullup_pin	= AT91_PIN_PA24,
	.vbus_pin	= -EINVAL,
};

static struct i2c_board_info __initdata csb337_i2c_devices[] = {
	{
		I2C_BOARD_INFO("ds1307", 0x68),
	},
};

static struct at91_cf_data __initdata csb337_cf_data = {
	/*
	 * connector P4 on the CSB 337 mates to
	 * connector P8 on the CSB 300CF
	 */

	/* CSB337 specific */
	.det_pin	= AT91_PIN_PC3,

	/* CSB300CF specific */
	.irq_pin	= AT91_PIN_PA19,
	.vcc_pin	= AT91_PIN_PD0,
	.rst_pin	= AT91_PIN_PD2,
};

static struct mci_platform_data __initdata csb337_mci0_data = {
	.slot[0] = {
		.bus_width	= 4,
		.detect_pin	= AT91_PIN_PD5,
		.wp_pin		= AT91_PIN_PD6,
	},
};

static struct spi_board_info csb337_spi_devices[] = {
	{	/* CAN controller */
		.modalias	= "sak82c900",
		.chip_select	= 0,
		.max_speed_hz	= 6 * 1000 * 1000,
	},
};

#define CSB_FLASH_BASE	AT91_CHIPSELECT_0
#define CSB_FLASH_SIZE	SZ_8M

static struct mtd_partition csb_flash_partitions[] = {
	{
		.name		= "uMON flash",
		.offset		= 0,
		.size		= MTDPART_SIZ_FULL,
		.mask_flags	= MTD_WRITEABLE,	/* read only */
	}
};

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

static struct resource csb_flash_resources[] = {
	{
		.start	= CSB_FLASH_BASE,
		.end	= CSB_FLASH_BASE + CSB_FLASH_SIZE - 1,
		.flags	= IORESOURCE_MEM,
	}
};

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

/*
 * GPIO Buttons (on CSB300)
 */
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button csb300_buttons[] = {
	{
		.gpio		= AT91_PIN_PB29,
		.code		= BTN_0,
		.desc		= "sw0",
		.active_low	= 1,
		.wakeup		= 1,
	},
	{
		.gpio		= AT91_PIN_PB28,
		.code		= BTN_1,
		.desc		= "sw1",
		.active_low	= 1,
		.wakeup		= 1,
	},
	{
		.gpio		= AT91_PIN_PA21,
		.code		= BTN_2,
		.desc		= "sw2",
		.active_low	= 1,
		.wakeup		= 1,
	}
};

static struct gpio_keys_platform_data csb300_button_data = {
	.buttons	= csb300_buttons,
	.nbuttons	= ARRAY_SIZE(csb300_buttons),
};

static struct platform_device csb300_button_device = {
	.name		= "gpio-keys",
	.id		= -1,
	.num_resources	= 0,
	.dev		= {
		.platform_data	= &csb300_button_data,
	}
};

static void __init csb300_add_device_buttons(void)
{
	at91_set_gpio_input(AT91_PIN_PB29, 1);	/* sw0 */
	at91_set_deglitch(AT91_PIN_PB29, 1);
	at91_set_gpio_input(AT91_PIN_PB28, 1);	/* sw1 */
	at91_set_deglitch(AT91_PIN_PB28, 1);
	at91_set_gpio_input(AT91_PIN_PA21, 1);	/* sw2 */
	at91_set_deglitch(AT91_PIN_PA21, 1);

	platform_device_register(&csb300_button_device);
}
#else
static void __init csb300_add_device_buttons(void) {}
#endif

static struct gpio_led csb_leds[] = {
	{	/* "led0", yellow */
		.name			= "led0",
		.gpio			= AT91_PIN_PB2,
		.active_low		= 1,
		.default_trigger	= "heartbeat",
	},
	{	/* "led1", green */
		.name			= "led1",
		.gpio			= AT91_PIN_PB1,
		.active_low		= 1,
		.default_trigger	= "mmc0",
	},
	{	/* "led2", yellow */
		.name			= "led2",
		.gpio			= AT91_PIN_PB0,
		.active_low		= 1,
		.default_trigger	= "ide-disk",
	}
};


static void __init csb337_board_init(void)
{
	/* Serial */
	/* DBGU on ttyS0 */
	at91_register_uart(0, 0, 0);
	at91_add_device_serial();
	/* Ethernet */
	at91_add_device_eth(&csb337_eth_data);
	/* USB Host */
	at91_add_device_usbh(&csb337_usbh_data);
	/* USB Device */
	at91_add_device_udc(&csb337_udc_data);
	/* I2C */
	at91_add_device_i2c(csb337_i2c_devices, ARRAY_SIZE(csb337_i2c_devices));
	/* Compact Flash */
	at91_set_gpio_input(AT91_PIN_PB22, 1);		/* IOIS16 */
	at91_add_device_cf(&csb337_cf_data);
	/* SPI */
	at91_add_device_spi(csb337_spi_devices, ARRAY_SIZE(csb337_spi_devices));
	/* MMC */
	at91_add_device_mci(0, &csb337_mci0_data);
	/* NOR flash */
	platform_device_register(&csb_flash);
	/* LEDs */
	at91_gpio_leds(csb_leds, ARRAY_SIZE(csb_leds));
	/* Switches on CSB300 */
	csb300_add_device_buttons();
}

MACHINE_START(CSB337, "Cogent CSB337")
	/* Maintainer: Bill Gatliff */
	.timer		= &at91rm9200_timer,
	.map_io		= at91_map_io,
	.handle_irq	= at91_aic_handle_irq,
	.init_early	= csb337_init_early,
	.init_irq	= at91_init_irq_default,
	.init_machine	= csb337_board_init,
MACHINE_END