board-sam9rlek.c

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/*
 *  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/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/fb.h>
#include <linux/clk.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>

#include <video/atmel_lcdc.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/board.h>
#include <mach/at91_aic.h>
#include <mach/at91sam9_smc.h>
#include <mach/at91_shdwc.h>

#include "sam9_smc.h"
#include "generic.h"


static void __init ek_init_early(void)
{
    /* Initialize processor: 12.000 MHz crystal */
    at91_initialize(12000000);
}

/*
 * USB HS Device port
 */
static struct usba_platform_data __initdata ek_usba_udc_data = {
    .vbus_pin   = AT91_PIN_PA8,
};


/*
 * MCI (SD/MMC)
 */
static struct mci_platform_data __initdata mci0_data = {
    .slot[0] = {
        .bus_width  = 4,
        .detect_pin = AT91_PIN_PA15,
        .wp_pin     = -EINVAL,
    },
};


/*
 * NAND flash
 */
static struct mtd_partition __initdata ek_nand_partition[] = {
    {
        .name   = "Partition 1",
        .offset = 0,
        .size   = SZ_256K,
    },
    {
        .name   = "Partition 2",
        .offset = MTDPART_OFS_NXTBLK,
        .size   = MTDPART_SIZ_FULL,
    },
};

static struct atmel_nand_data __initdata ek_nand_data = {
    .ale        = 21,
    .cle        = 22,
    .det_pin    = -EINVAL,
    .rdy_pin    = AT91_PIN_PD17,
    .enable_pin = AT91_PIN_PB6,
    .ecc_mode   = NAND_ECC_SOFT,
    .on_flash_bbt   = 1,
    .parts      = ek_nand_partition,
    .num_parts  = ARRAY_SIZE(ek_nand_partition),
};

static struct sam9_smc_config __initdata ek_nand_smc_config = {
    .ncs_read_setup     = 0,
    .nrd_setup      = 1,
    .ncs_write_setup    = 0,
    .nwe_setup      = 1,

    .ncs_read_pulse     = 3,
    .nrd_pulse      = 3,
    .ncs_write_pulse    = 3,
    .nwe_pulse      = 3,

    .read_cycle     = 5,
    .write_cycle        = 5,

    .mode           = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
    .tdf_cycles     = 2,
};

static void __init ek_add_device_nand(void)
{
    /* configure chip-select 3 (NAND) */
    sam9_smc_configure(0, 3, &ek_nand_smc_config);

    at91_add_device_nand(&ek_nand_data);
}


/*
 * 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_PC1, 0);   /* power up */
    else
        at91_set_gpio_value(AT91_PIN_PC1, 1);   /* power down */
}

/* Driver datas */
static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
    .lcdcon_is_backlight            = true,
    .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,
    .lcd_wiring_mode        = ATMEL_LCDC_WIRING_RGB,
};

#else
static struct atmel_lcdfb_info __initdata ek_lcdc_data;
#endif


/*
 * AC97
 * reset_pin is not connected: NRST
 */
static struct ac97c_platform_data ek_ac97_data = {
    .reset_pin  = -EINVAL,
};


/*
 * LEDs
 */
static struct gpio_led ek_leds[] = {
    {   /* "bottom" led, green, userled1 to be defined */
        .name           = "ds1",
        .gpio           = AT91_PIN_PD15,
        .active_low     = 1,
        .default_trigger    = "none",
    },
    {   /* "bottom" led, green, userled2 to be defined */
        .name           = "ds2",
        .gpio           = AT91_PIN_PD16,
        .active_low     = 1,
        .default_trigger    = "none",
    },
    {   /* "power" led, yellow */
        .name           = "ds3",
        .gpio           = AT91_PIN_PD14,
        .default_trigger    = "heartbeat",
    }
};


/*
 * Touchscreen
 */
static struct at91_tsadcc_data ek_tsadcc_data = {
    .adc_clock      = 1000000,
    .pendet_debounce    = 0x0f,
    .ts_sample_hold_time    = 0x03,
};


/*
 * GPIO Buttons
 */
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button ek_buttons[] = {
    {
        .gpio       = AT91_PIN_PB0,
        .code       = BTN_2,
        .desc       = "Right Click",
        .active_low = 1,
        .wakeup     = 1,
    },
    {
        .gpio       = AT91_PIN_PB1,
        .code       = BTN_1,
        .desc       = "Left Click",
        .active_low = 1,
        .wakeup     = 1,
    }
};

static struct gpio_keys_platform_data ek_button_data = {
    .buttons    = ek_buttons,
    .nbuttons   = ARRAY_SIZE(ek_buttons),
};

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

static void __init ek_add_device_buttons(void)
{
    at91_set_gpio_input(AT91_PIN_PB1, 1);   /* btn1 */
    at91_set_deglitch(AT91_PIN_PB1, 1);
    at91_set_gpio_input(AT91_PIN_PB0, 1);   /* btn2 */
    at91_set_deglitch(AT91_PIN_PB0, 1);

    platform_device_register(&ek_button_device);
}
#else
static void __init ek_add_device_buttons(void) {}
#endif


static void __init ek_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(AT91SAM9RL_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS);
    at91_add_device_serial();
    /* USB HS */
    at91_add_device_usba(&ek_usba_udc_data);
    /* I2C */
    at91_add_device_i2c(NULL, 0);
    /* NAND */
    ek_add_device_nand();
    /* SPI */
    at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
    /* MMC */
    at91_add_device_mci(0, &mci0_data);
    /* LCD Controller */
    at91_add_device_lcdc(&ek_lcdc_data);
    /* AC97 */
    at91_add_device_ac97(&ek_ac97_data);
    /* Touch Screen Controller */
    at91_add_device_tsadcc(&ek_tsadcc_data);
    /* LEDs */
    at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
    /* Push Buttons */
    ek_add_device_buttons();
}

MACHINE_START(AT91SAM9RLEK, "Atmel AT91SAM9RL-EK")
    /* Maintainer: Atmel */
    .timer      = &at91sam926x_timer,
    .map_io     = at91_map_io,
    .handle_irq = at91_aic_handle_irq,
    .init_early = ek_init_early,
    .init_irq   = at91_init_irq_default,
    .init_machine   = ek_board_init,
MACHINE_END