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board-cpu9krea.c

/*
 * linux/arch/arm/mach-at91/board-cpu9krea.c
 *
 *  Copyright (C) 2005 SAN People
 *  Copyright (C) 2006 Atmel
 *  Copyright (C) 2009 Eric Benard - eric@eukrea.com
 *
 * 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/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/gpio.h>
#include <mach/at91sam9_smc.h>
#include <mach/at91sam9260_matrix.h>

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

static void __init cpu9krea_map_io(void)
{
      /* Initialize processor: 18.432 MHz crystal */
      at91sam9260_initialize(18432000);

      /* 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);

      /* set serial console to ttyS0 (ie, DBGU) */
      at91_set_serial_console(0);
}

static void __init cpu9krea_init_irq(void)
{
      at91sam9260_init_interrupts(NULL);
}

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

/*
 * USB Device port
 */
static struct at91_udc_data __initdata cpu9krea_udc_data = {
      .vbus_pin   = AT91_PIN_PC8,
      .pullup_pin = 0,        /* pull-up driven by UDC */
};

/*
 * MACB Ethernet device
 */
static struct at91_eth_data __initdata cpu9krea_macb_data = {
      .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,
};

#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(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_sys_read(AT91_MATRIX_EBICSA);
      at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_VDDIOMSEL_3_3V);

      /* configure chip-select 0 (NOR) */
      sam9_smc_configure(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("rtc-ds1307", 0x68),
            .type = "ds1339",
      },
};

/*
 * 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 at91_mmc_data __initdata cpu9krea_mmc_data = {
      .slot_b           = 0,
      .wire4            = 1,
      .det_pin    = AT91_PIN_PA29,
};

static void __init cpu9krea_board_init(void)
{
      /* NOR */
      cpu9krea_add_device_nor();
      /* Serial */
      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_mmc(0, &cpu9krea_mmc_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 */
      .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           = cpu9krea_map_io,
      .init_irq   = cpu9krea_init_irq,
      .init_machine     = cpu9krea_board_init,
MACHINE_END

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