board-sam9263ek.c

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/*
 * linux/arch/arm/mach-at91/board-sam9263ek.c
 *
 *  Copyright (C) 2005 SAN People
 *  Copyright (C) 2007 Atmel Corporation.
 *
 * 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/spi/ads7846.h>
#include <linux/i2c/at24.h>
#include <linux/fb.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/leds.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 <mach/system_rev.h>

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


static void __init ek_init_early(void)
{
    /* Initialize processor: 16.367 MHz crystal */
    at91_initialize(16367660);
}

/*
 * USB Host port
 */
static struct at91_usbh_data __initdata ek_usbh_data = {
    .ports      = 2,
    .vbus_pin   = { AT91_PIN_PA24, AT91_PIN_PA21 },
    .vbus_pin_active_low = {1, 1},
    .overcurrent_pin= {-EINVAL, -EINVAL},
};

/*
 * USB Device port
 */
static struct at91_udc_data __initdata ek_udc_data = {
    .vbus_pin   = AT91_PIN_PA25,
    .pullup_pin = -EINVAL,      /* pull-up driven by UDC */
};


/*
 * ADS7846 Touchscreen
 */
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
static int ads7843_pendown_state(void)
{
    return !at91_get_gpio_value(AT91_PIN_PA15); /* 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,
    .x_plate_ohms       = 450,
    .y_plate_ohms       = 250,
    .pressure_max       = 15000,
    .debounce_max       = 1,
    .debounce_rep       = 0,
    .debounce_tol       = (~0),
    .get_pendown_state  = ads7843_pendown_state,
};

static void __init ek_add_device_ts(void)
{
    at91_set_B_periph(AT91_PIN_PA15, 1);    /* External IRQ1, with pullup */
    at91_set_gpio_input(AT91_PIN_PA31, 1);  /* Touchscreen BUSY signal */
}
#else
static void __init ek_add_device_ts(void) {}
#endif

/*
 * SPI devices.
 */
static struct spi_board_info ek_spi_devices[] = {
#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
    {   /* DataFlash card */
        .modalias   = "mtd_dataflash",
        .chip_select    = 0,
        .max_speed_hz   = 15 * 1000 * 1000,
        .bus_num    = 0,
    },
#endif
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
    {
        .modalias   = "ads7846",
        .chip_select    = 3,
        .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
        .bus_num    = 0,
        .platform_data  = &ads_info,
        .irq        = NR_IRQS_LEGACY + AT91SAM9263_ID_IRQ1,
    },
#endif
};


/*
 * MCI (SD/MMC)
 */
static struct mci_platform_data __initdata mci1_data = {
    .slot[0] = {
        .bus_width  = 4,
        .detect_pin = AT91_PIN_PE18,
        .wp_pin     = AT91_PIN_PE19,
    },
};


/*
 * MACB Ethernet device
 */
static struct macb_platform_data __initdata ek_macb_data = {
    .phy_irq_pin    = AT91_PIN_PE31,
    .is_rmii    = 1,
};


/*
 * NAND flash
 */
static struct mtd_partition __initdata ek_nand_partition[] = {
    {
        .name   = "Partition 1",
        .offset = 0,
        .size   = SZ_64M,
    },
    {
        .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_PA22,
    .enable_pin = AT91_PIN_PD15,
    .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,
    .tdf_cycles     = 2,
};

static void __init ek_add_device_nand(void)
{
    ek_nand_data.bus_width_16 = board_have_nand_16bit();
    /* setup bus-width (8 or 16) */
    if (ek_nand_data.bus_width_16)
        ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
    else
        ek_nand_smc_config.mode |= AT91_SMC_DBW_8;

    /* configure chip-select 3 (NAND) */
    sam9_smc_configure(0, 3, &ek_nand_smc_config);

    at91_add_device_nand(&ek_nand_data);
}


/*
 * I2C devices
 */
static struct at24_platform_data at24c512 = {
    .byte_len   = SZ_512K / 8,
    .page_size  = 128,
    .flags      = AT24_FLAG_ADDR16,
};


static struct i2c_board_info __initdata ek_i2c_devices[] = {
    {
        I2C_BOARD_INFO("24c512", 0x50),
        .platform_data = &at24c512,
    },
    /* more devices can be added using expansion connectors */
};

/*
 * 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    = "TX09D70VM1CCA",

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

#define AT91SAM9263_DEFAULT_LCDCON2     (ATMEL_LCDC_MEMOR_LITTLE \
                    | ATMEL_LCDC_DISTYPE_TFT \
                    | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)

static void at91_lcdc_power_control(int on)
{
    at91_set_gpio_value(AT91_PIN_PA30, on);
}

/* 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        = AT91SAM9263_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


/*
 * GPIO Buttons
 */
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button ek_buttons[] = {
    {   /* BP1, "leftclic" */
        .code       = BTN_LEFT,
        .gpio       = AT91_PIN_PC5,
        .active_low = 1,
        .desc       = "left_click",
        .wakeup     = 1,
    },
    {   /* BP2, "rightclic" */
        .code       = BTN_RIGHT,
        .gpio       = AT91_PIN_PC4,
        .active_low = 1,
        .desc       = "right_click",
        .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_periph(AT91_PIN_PC5, 1);  /* left button */
    at91_set_deglitch(AT91_PIN_PC5, 1);
    at91_set_GPIO_periph(AT91_PIN_PC4, 1);  /* right button */
    at91_set_deglitch(AT91_PIN_PC4, 1);

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


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


/*
 * LEDs ... these could all be PWM-driven, for variable brightness
 */
static struct gpio_led ek_leds[] = {
    {   /* "right" led, green, userled2 (could be driven by pwm2) */
        .name           = "ds2",
        .gpio           = AT91_PIN_PC29,
        .active_low     = 1,
        .default_trigger    = "nand-disk",
    },
    {   /* "power" led, yellow (could be driven by pwm0) */
        .name           = "ds3",
        .gpio           = AT91_PIN_PB7,
        .default_trigger    = "heartbeat",
    }
};

/*
 * PWM Leds
 */
static struct gpio_led ek_pwm_led[] = {
    /* For now only DS1 is PWM-driven (by pwm1) */
    {
        .name           = "ds1",
        .gpio           = 1,    /* is PWM channel number */
        .active_low     = 1,
        .default_trigger    = "none",
    }
};

/*
 * CAN
 */
static void sam9263ek_transceiver_switch(int on)
{
    if (on) {
        at91_set_gpio_output(AT91_PIN_PA18, 1); /* CANRXEN */
        at91_set_gpio_output(AT91_PIN_PA19, 0); /* CANRS */
    } else {
        at91_set_gpio_output(AT91_PIN_PA18, 0); /* CANRXEN */
        at91_set_gpio_output(AT91_PIN_PA19, 1); /* CANRS */
    }
}

static struct at91_can_data ek_can_data = {
    .transceiver_switch = sam9263ek_transceiver_switch,
};

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, RTS, CTS) */
    at91_register_uart(AT91SAM9263_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS);
    at91_add_device_serial();
    /* USB Host */
    at91_add_device_usbh(&ek_usbh_data);
    /* USB Device */
    at91_add_device_udc(&ek_udc_data);
    /* SPI */
    at91_set_gpio_output(AT91_PIN_PE20, 1);     /* select spi0 clock */
    at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
    /* Touchscreen */
    ek_add_device_ts();
    /* MMC */
    at91_add_device_mci(1, &mci1_data);
    /* Ethernet */
    at91_add_device_eth(&ek_macb_data);
    /* NAND */
    ek_add_device_nand();
    /* I2C */
    at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
    /* LCD Controller */
    at91_add_device_lcdc(&ek_lcdc_data);
    /* Push Buttons */
    ek_add_device_buttons();
    /* AC97 */
    at91_add_device_ac97(&ek_ac97_data);
    /* LEDs */
    at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
    at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led));
    /* CAN */
    at91_add_device_can(&ek_can_data);
}

MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-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