board-sam9rlek.c

linux 内核源代码

/*
 *  Copyright (C) 2005 SAN People
 *  Copyright (C) 2007 Atmel Corporation
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive for
 * more details.
 */

#include <linux/types.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/fb.h>
#include <linux/clk.h>

#include <video/atmel_lcdc.h>

#include <asm/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 <asm/arch/board.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91sam926x_mc.h>

#include "generic.h"


/*
 * Serial port configuration.
 *    0 .. 3 = USART0 .. USART3
 *    4      = DBGU
 */
static struct at91_uart_config __initdata ek_uart_config = {
	.console_tty	= 0,				/* ttyS0 */
	.nr_tty		= 2,
	.tty_map	= { 4, 0, -1, -1, -1 }		/* ttyS0, ..., ttyS4 */
};

static void __init ek_map_io(void)
{
	/* Initialize processor: 12.000 MHz crystal */
	at91sam9rl_initialize(12000000);

	/* Setup the serial ports and console */
	at91_init_serial(&ek_uart_config);
}

static void __init ek_init_irq(void)
{
	at91sam9rl_init_interrupts(NULL);
}


/*
 * MCI (SD/MMC)
 */
static struct at91_mmc_data __initdata ek_mmc_data = {
	.wire4		= 1,
	.det_pin	= AT91_PIN_PA15,
//	.wp_pin		= ... not connected
//	.vcc_pin	= ... not connected
};


/*
 * NAND flash
 */
static struct mtd_partition __initdata ek_nand_partition[] = {
	{
		.name	= "Partition 1",
		.offset	= 0,
		.size	= 256 * 1024,
	},
	{
		.name	= "Partition 2",
		.offset	= 256 * 1024 ,
		.size	= MTDPART_SIZ_FULL,
	},
};

static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
{
	*num_partitions = ARRAY_SIZE(ek_nand_partition);
	return ek_nand_partition;
}

static struct at91_nand_data __initdata ek_nand_data = {
	.ale		= 21,
	.cle		= 22,
//	.det_pin	= ... not connected
	.rdy_pin	= AT91_PIN_PD17,
	.enable_pin	= AT91_PIN_PB6,
	.partition_info	= nand_partitions,
	.bus_width_16	= 0,
};


/*
 * SPI devices
 */
static struct spi_board_info ek_spi_devices[] = {
	{	/* DataFlash chip */
		.modalias	= "mtd_dataflash",
		.chip_select	= 0,
		.max_speed_hz	= 15 * 1000 * 1000,
		.bus_num	= 0,
	},
};


/*
 * LCD Controller
 */
#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
static struct fb_videomode at91_tft_vga_modes[] = {
	{
		.name		= "TX09D50VM1CCA @ 60",
		.refresh	= 60,
		.xres		= 240,		.yres		= 320,
		.pixclock	= KHZ2PICOS(4965),

		.left_margin	= 1,		.right_margin	= 33,
		.upper_margin	= 1,		.lower_margin	= 0,
		.hsync_len	= 5,		.vsync_len	= 1,

		.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
		.vmode		= FB_VMODE_NONINTERLACED,
	},
};

static struct fb_monspecs at91fb_default_monspecs = {
	.manufacturer	= "HIT",
	.monitor	= "TX09D50VM1CCA",

	.modedb		= at91_tft_vga_modes,
	.modedb_len	= ARRAY_SIZE(at91_tft_vga_modes),
	.hfmin		= 15000,
	.hfmax		= 64000,
	.vfmin		= 50,
	.vfmax		= 150,
};

#define AT91SAM9RL_DEFAULT_LCDCON2	(ATMEL_LCDC_MEMOR_LITTLE \
					| ATMEL_LCDC_DISTYPE_TFT \
					| ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)

static void at91_lcdc_power_control(int on)
{
	if (on)
		at91_set_gpio_value(AT91_PIN_PA30, 0);	/* power up */
	else
		at91_set_gpio_value(AT91_PIN_PA30, 1);	/* power down */
}

/* Driver datas */
static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
	.default_bpp			= 16,
	.default_dmacon			= ATMEL_LCDC_DMAEN,
	.default_lcdcon2		= AT91SAM9RL_DEFAULT_LCDCON2,
	.default_monspecs		= &at91fb_default_monspecs,
	.atmel_lcdfb_power_control	= at91_lcdc_power_control,
	.guard_time			= 1,
};

#else
static struct atmel_lcdfb_info __initdata ek_lcdc_data;
#endif


static void __init ek_board_init(void)
{
	/* Serial */
	at91_add_device_serial();
	/* I2C */
	at91_add_device_i2c(NULL, 0);
	/* NAND */
	at91_add_device_nand(&ek_nand_data);
	/* SPI */
	at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
	/* MMC */
	at91_add_device_mmc(0, &ek_mmc_data);
	/* LCD Controller */
	at91_add_device_lcdc(&ek_lcdc_data);
}

MACHINE_START(AT91SAM9RLEK, "Atmel AT91SAM9RL-EK")
	/* Maintainer: Atmel */
	.phys_io	= AT91_BASE_SYS,
	.io_pg_offst	= (AT91_VA_BASE_SYS >> 18) & 0xfffc,
	.boot_params	= AT91_SDRAM_BASE + 0x100,
	.timer		= &at91sam926x_timer,
	.map_io		= ek_map_io,
	.init_irq	= ek_init_irq,
	.init_machine	= ek_board_init,
MACHINE_END