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board-sam9263ek.c

/*
 * 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/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/gpio.h>
#include <mach/at91sam9_smc.h>
#include <mach/at91_shdwc.h>

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


static void __init ek_map_io(void)
{
      /* Initialize processor: 16.367 MHz crystal */
      at91sam9263_initialize(16367660);

      /* 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);

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

static void __init ek_init_irq(void)
{
      at91sam9263_init_interrupts(NULL);
}


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

/*
 * USB Device port
 */
static struct at91_udc_data __initdata ek_udc_data = {
      .vbus_pin   = AT91_PIN_PA25,
      .pullup_pin = 0,        /* 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        = AT91SAM9263_ID_IRQ1,
      },
#endif
};


/*
 * MCI (SD/MMC)
 */
static struct at91_mmc_data __initdata ek_mmc_data = {
      .wire4            = 1,
      .det_pin    = AT91_PIN_PE18,
      .wp_pin           = AT91_PIN_PE19,
//    .vcc_pin    = ... not connected
};


/*
 * MACB Ethernet device
 */
static struct at91_eth_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 mtd_partition * __init nand_partitions(int size, int *num_partitions)
{
      *num_partitions = ARRAY_SIZE(ek_nand_partition);
      return ek_nand_partition;
}

static struct atmel_nand_data __initdata ek_nand_data = {
      .ale        = 21,
      .cle        = 22,
//    .det_pin    = ... not connected
      .rdy_pin    = AT91_PIN_PA22,
      .enable_pin = AT91_PIN_PD15,
      .partition_info   = nand_partitions,
#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
      .bus_width_16     = 1,
#else
      .bus_width_16     = 0,
#endif
};

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)
{
      /* 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(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 = {
};


/*
 * 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 */
      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_mmc(1, &ek_mmc_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 */
      .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           = ek_map_io,
      .init_irq   = ek_init_irq,
      .init_machine     = ek_board_init,
MACHINE_END

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