board-usb-a926x.c

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/*
 * linux/arch/arm/mach-at91/board-usb-a926x.c
 *
 *  Copyright (C) 2005 SAN People
 *  Copyright (C) 2007 Atmel Corporation.
 *  Copyright (C) 2007 Calao-systems
 *  Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
 *
 * 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/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/gpio_keys.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/spi/mmc_spi.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: 12.00 MHz crystal */
    at91_initialize(12000000);
}

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

/*
 * USB Device port
 */
static struct at91_udc_data __initdata ek_udc_data = {
    .vbus_pin   = AT91_PIN_PB11,
    .pullup_pin = -EINVAL,      /* pull-up driven by UDC */
};

static void __init ek_add_device_udc(void)
{
    if (machine_is_usb_a9260() || machine_is_usb_a9g20())
        ek_udc_data.vbus_pin = AT91_PIN_PC5;

    at91_add_device_udc(&ek_udc_data);
}

#if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
#define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
static int at91_mmc_spi_init(struct device *dev,
    irqreturn_t (*detect_int)(int, void *), void *data)
{
    /* Configure Interrupt pin as input, no pull-up */
    at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
    return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
        IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
        "mmc-spi-detect", data);
}

static void at91_mmc_spi_exit(struct device *dev, void *data)
{
    free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
}

static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
    .init = at91_mmc_spi_init,
    .exit = at91_mmc_spi_exit,
    .detect_delay = 100, /* msecs */
};
#endif

/*
 * SPI devices.
 */
static struct spi_board_info usb_a9263_spi_devices[] = {
    {   /* DataFlash chip */
        .modalias   = "mtd_dataflash",
        .chip_select    = 0,
        .max_speed_hz   = 15 * 1000 * 1000,
        .bus_num    = 0,
    }
};

static struct spi_board_info usb_a9g20_spi_devices[] = {
#if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
    {
        .modalias = "mmc_spi",
        .max_speed_hz = 20000000,   /* max spi clock (SCK) speed in HZ */
        .bus_num = 1,
        .chip_select = 0,
        .platform_data = &at91_mmc_spi_pdata,
        .mode = SPI_MODE_3,
    },
#endif
};

static void __init ek_add_device_spi(void)
{
    if (machine_is_usb_a9263())
        at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
    else if (machine_is_usb_a9g20())
        at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
}

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

static void __init ek_add_device_eth(void)
{
    if (machine_is_usb_a9260() || machine_is_usb_a9g20())
        ek_macb_data.phy_irq_pin = AT91_PIN_PA31;

    at91_add_device_eth(&ek_macb_data);
}

/*
 * NAND flash
 */
static struct mtd_partition __initdata ek_nand_partition[] = {
    {
        .name   = "barebox",
        .offset = 0,
        .size   = 3 * SZ_128K,
    }, {
        .name   = "bareboxenv",
        .offset = MTDPART_OFS_NXTBLK,
        .size   = SZ_128K,
    }, {
        .name   = "bareboxenv2",
        .offset = MTDPART_OFS_NXTBLK,
        .size   = SZ_128K,
    }, {
        .name   = "oftree",
        .offset = MTDPART_OFS_NXTBLK,
        .size   = SZ_128K,
    }, {
        .name   = "kernel",
        .offset = MTDPART_OFS_NXTBLK,
        .size   = 4 * SZ_1M,
    }, {
        .name   = "rootfs",
        .offset = MTDPART_OFS_NXTBLK,
        .size   = 120 * SZ_1M,
    }, {
        .name   = "data",
        .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 usb_a9260_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 struct sam9_smc_config __initdata usb_a9g20_nand_smc_config = {
    .ncs_read_setup     = 0,
    .nrd_setup      = 2,
    .ncs_write_setup    = 0,
    .nwe_setup      = 2,

    .ncs_read_pulse     = 4,
    .nrd_pulse      = 4,
    .ncs_write_pulse    = 4,
    .nwe_pulse      = 4,

    .read_cycle     = 7,
    .write_cycle        = 7,

    .mode           = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
    .tdf_cycles     = 3,
};

static void __init ek_add_device_nand(void)
{
    if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {
        ek_nand_data.rdy_pin    = AT91_PIN_PC13;
        ek_nand_data.enable_pin = AT91_PIN_PC14;
    }

    /* configure chip-select 3 (NAND) */
    if (machine_is_usb_a9g20())
        sam9_smc_configure(0, 3, &usb_a9g20_nand_smc_config);
    else
        sam9_smc_configure(0, 3, &usb_a9260_nand_smc_config);

    at91_add_device_nand(&ek_nand_data);
}


/*
 * GPIO Buttons
 */
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button ek_buttons[] = {
    {   /* USER PUSH BUTTON */
        .code       = KEY_ENTER,
        .gpio       = AT91_PIN_PB10,
        .active_low = 1,
        .desc       = "user_pb",
        .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_PB10, 1); /* user push button, pull up enabled */
    at91_set_deglitch(AT91_PIN_PB10, 1);

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

/*
 * LEDs
 */
static struct gpio_led ek_leds[] = {
    {   /* user_led (green) */
        .name           = "user_led",
        .gpio           = AT91_PIN_PB21,
        .active_low     = 1,
        .default_trigger    = "heartbeat",
    }
};

static struct i2c_board_info __initdata ek_i2c_devices[] = {
    {
        I2C_BOARD_INFO("rv3029c2", 0x56),
    },
};

static void __init ek_add_device_leds(void)
{
    if (machine_is_usb_a9260() || machine_is_usb_a9g20())
        ek_leds[0].active_low = 0;

    at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
}

static void __init ek_board_init(void)
{
    /* Serial */
    /* DBGU on ttyS0. (Rx & Tx only) */
    at91_register_uart(0, 0, 0);
    at91_add_device_serial();
    /* USB Host */
    at91_add_device_usbh(&ek_usbh_data);
    /* USB Device */
    ek_add_device_udc();
    /* SPI */
    ek_add_device_spi();
    /* Ethernet */
    ek_add_device_eth();
    /* NAND */
    ek_add_device_nand();
    /* Push Buttons */
    ek_add_device_buttons();
    /* LEDs */
    ek_add_device_leds();

    if (machine_is_usb_a9g20()) {
        /* I2C */
        at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
    } else {
        /* I2C */
        at91_add_device_i2c(NULL, 0);
        /* shutdown controller, wakeup button (5 msec low) */
        at91_shdwc_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
                | AT91_SHDW_WKMODE0_LOW
                | AT91_SHDW_RTTWKEN);
    }
}

MACHINE_START(USB_A9263, "CALAO USB_A9263")
    /* Maintainer: calao-systems */
    .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

MACHINE_START(USB_A9260, "CALAO USB_A9260")
    /* Maintainer: calao-systems */
    .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

MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
    /* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
    .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