board-cpu9krea.c

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/*
 * linux/arch/arm/mach-at91/board-cpu9krea.c
 *
 *  Copyright (C) 2005 SAN People
 *  Copyright (C) 2006 Atmel
 *  Copyright (C) 2009 Eric Benard - [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/gpio.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/mtd/physmap.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/at91sam9260_matrix.h>
#include <mach/at91_matrix.h>

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

static void __init cpu9krea_init_early(void)
{
    /* Initialize processor: 18.432 MHz crystal */
    at91_initialize(18432000);
}

/*
 * USB Host port
 */
static struct at91_usbh_data __initdata cpu9krea_usbh_data = {
    .ports      = 2,
    .vbus_pin   = {-EINVAL, -EINVAL},
    .overcurrent_pin= {-EINVAL, -EINVAL},
};

/*
 * USB Device port
 */
static struct at91_udc_data __initdata cpu9krea_udc_data = {
    .vbus_pin   = AT91_PIN_PC8,
    .pullup_pin = -EINVAL,      /* pull-up driven by UDC */
};

/*
 * MACB Ethernet device
 */
static struct macb_platform_data __initdata cpu9krea_macb_data = {
    .phy_irq_pin    = -EINVAL,
    .is_rmii    = 1,
};

/*
 * NAND flash
 */
static struct atmel_nand_data __initdata cpu9krea_nand_data = {
    .ale        = 21,
    .cle        = 22,
    .rdy_pin    = AT91_PIN_PC13,
    .enable_pin = AT91_PIN_PC14,
    .bus_width_16   = 0,
    .det_pin    = -EINVAL,
    .ecc_mode   = NAND_ECC_SOFT,
};

#ifdef CONFIG_MACH_CPU9260
static struct sam9_smc_config __initdata cpu9krea_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,
};
#else
static struct sam9_smc_config __initdata cpu9krea_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,
};
#endif

static void __init cpu9krea_add_device_nand(void)
{
    sam9_smc_configure(0, 3, &cpu9krea_nand_smc_config);
    at91_add_device_nand(&cpu9krea_nand_data);
}

/*
 * NOR flash
 */
static struct physmap_flash_data cpuat9260_nor_data = {
    .width      = 2,
};

#define NOR_BASE    AT91_CHIPSELECT_0
#define NOR_SIZE    SZ_64M

static struct resource nor_flash_resources[] = {
    {
        .start  = NOR_BASE,
        .end    = NOR_BASE + NOR_SIZE - 1,
        .flags  = IORESOURCE_MEM,
    }
};

static struct platform_device cpu9krea_nor_flash = {
    .name       = "physmap-flash",
    .id     = 0,
    .dev        = {
        .platform_data  = &cpuat9260_nor_data,
    },
    .resource   = nor_flash_resources,
    .num_resources  = ARRAY_SIZE(nor_flash_resources),
};

#ifdef CONFIG_MACH_CPU9260
static struct sam9_smc_config __initdata cpu9krea_nor_smc_config = {
    .ncs_read_setup     = 0,
    .nrd_setup      = 1,
    .ncs_write_setup    = 0,
    .nwe_setup      = 1,

    .ncs_read_pulse     = 10,
    .nrd_pulse      = 10,
    .ncs_write_pulse    = 6,
    .nwe_pulse      = 6,

    .read_cycle     = 12,
    .write_cycle        = 8,

    .mode           = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
            | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
            | AT91_SMC_DBW_16,
    .tdf_cycles     = 2,
};
#else
static struct sam9_smc_config __initdata cpu9krea_nor_smc_config = {
    .ncs_read_setup     = 0,
    .nrd_setup      = 1,
    .ncs_write_setup    = 0,
    .nwe_setup      = 1,

    .ncs_read_pulse     = 13,
    .nrd_pulse      = 13,
    .ncs_write_pulse    = 8,
    .nwe_pulse      = 8,

    .read_cycle     = 15,
    .write_cycle        = 10,

    .mode           = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
            | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
            | AT91_SMC_DBW_16,
    .tdf_cycles     = 2,
};
#endif

static __init void cpu9krea_add_device_nor(void)
{
    unsigned long csa;

    csa = at91_matrix_read(AT91_MATRIX_EBICSA);
    at91_matrix_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_VDDIOMSEL_3_3V);

    /* configure chip-select 0 (NOR) */
    sam9_smc_configure(0, 0, &cpu9krea_nor_smc_config);

    platform_device_register(&cpu9krea_nor_flash);
}

/*
 * LEDs
 */
static struct gpio_led cpu9krea_leds[] = {
    {   /* LED1 */
        .name           = "LED1",
        .gpio           = AT91_PIN_PC11,
        .active_low     = 1,
        .default_trigger    = "timer",
    },
    {   /* LED2 */
        .name           = "LED2",
        .gpio           = AT91_PIN_PC12,
        .active_low     = 1,
        .default_trigger    = "heartbeat",
    },
    {   /* LED3 */
        .name           = "LED3",
        .gpio           = AT91_PIN_PC7,
        .active_low     = 1,
        .default_trigger    = "none",
    },
    {   /* LED4 */
        .name           = "LED4",
        .gpio           = AT91_PIN_PC9,
        .active_low     = 1,
        .default_trigger    = "none",
    }
};

static struct i2c_board_info __initdata cpu9krea_i2c_devices[] = {
    {
        I2C_BOARD_INFO("ds1339", 0x68),
    },
};

/*
 * GPIO Buttons
 */
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button cpu9krea_buttons[] = {
    {
        .gpio       = AT91_PIN_PC3,
        .code       = BTN_0,
        .desc       = "BP1",
        .active_low = 1,
        .wakeup     = 1,
    },
    {
        .gpio       = AT91_PIN_PB20,
        .code       = BTN_1,
        .desc       = "BP2",
        .active_low = 1,
        .wakeup     = 1,
    }
};

static struct gpio_keys_platform_data cpu9krea_button_data = {
    .buttons    = cpu9krea_buttons,
    .nbuttons   = ARRAY_SIZE(cpu9krea_buttons),
};

static struct platform_device cpu9krea_button_device = {
    .name       = "gpio-keys",
    .id     = -1,
    .num_resources  = 0,
    .dev        = {
        .platform_data  = &cpu9krea_button_data,
    }
};

static void __init cpu9krea_add_device_buttons(void)
{
    at91_set_gpio_input(AT91_PIN_PC3, 1);   /* BP1 */
    at91_set_deglitch(AT91_PIN_PC3, 1);
    at91_set_gpio_input(AT91_PIN_PB20, 1);  /* BP2 */
    at91_set_deglitch(AT91_PIN_PB20, 1);

    platform_device_register(&cpu9krea_button_device);
}
#else
static void __init cpu9krea_add_device_buttons(void)
{
}
#endif

/*
 * MCI (SD/MMC)
 */
static struct mci_platform_data __initdata cpu9krea_mci0_data = {
    .slot[0] = {
        .bus_width  = 4,
        .detect_pin = AT91_PIN_PA29,
        .wp_pin     = -EINVAL,
    },
};

static void __init cpu9krea_board_init(void)
{
    /* NOR */
    cpu9krea_add_device_nor();
    /* Serial */
    /* DGBU on ttyS0. (Rx & Tx only) */
    at91_register_uart(0, 0, 0);

    /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
    at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS |
        ATMEL_UART_RTS | ATMEL_UART_DTR | ATMEL_UART_DSR |
        ATMEL_UART_DCD | ATMEL_UART_RI);

    /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
    at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS |
        ATMEL_UART_RTS);

    /* USART2 on ttyS3. (Rx, Tx, RTS, CTS) */
    at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS |
        ATMEL_UART_RTS);

    /* USART3 on ttyS4. (Rx, Tx) */
    at91_register_uart(AT91SAM9260_ID_US3, 4, 0);

    /* USART4 on ttyS5. (Rx, Tx) */
    at91_register_uart(AT91SAM9260_ID_US4, 5, 0);

    /* USART5 on ttyS6. (Rx, Tx) */
    at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
    at91_add_device_serial();
    /* USB Host */
    at91_add_device_usbh(&cpu9krea_usbh_data);
    /* USB Device */
    at91_add_device_udc(&cpu9krea_udc_data);
    /* NAND */
    cpu9krea_add_device_nand();
    /* Ethernet */
    at91_add_device_eth(&cpu9krea_macb_data);
    /* MMC */
    at91_add_device_mci(0, &cpu9krea_mci0_data);
    /* I2C */
    at91_add_device_i2c(cpu9krea_i2c_devices,
        ARRAY_SIZE(cpu9krea_i2c_devices));
    /* LEDs */
    at91_gpio_leds(cpu9krea_leds, ARRAY_SIZE(cpu9krea_leds));
    /* Push Buttons */
    cpu9krea_add_device_buttons();
}

#ifdef CONFIG_MACH_CPU9260
MACHINE_START(CPUAT9260, "Eukrea CPU9260")
#else
MACHINE_START(CPUAT9G20, "Eukrea CPU9G20")
#endif
    /* Maintainer: Eric Benard - EUKREA Electromatique */
    .timer      = &at91sam926x_timer,
    .map_io     = at91_map_io,
    .handle_irq = at91_aic_handle_irq,
    .init_early = cpu9krea_init_early,
    .init_irq   = at91_init_irq_default,
    .init_machine   = cpu9krea_board_init,
MACHINE_END