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board-sam9261ek.c

/*
 * linux/arch/arm/mach-at91/board-sam9261ek.c
 *
 *  Copyright (C) 2005 SAN People
 *  Copyright (C) 2006 Atmel
 *
 * 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/dm9000.h>
#include <linux/fb.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>

#include <video/atmel_lcdc.h>

#include <asm/hardware.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 <asm/arch/board.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91sam926x_mc.h>

#include "generic.h"


/*
 * Serial port configuration.
 *    0 .. 2 = USART0 .. USART2
 *    3      = DBGU
 */
static struct at91_uart_config __initdata ek_uart_config = {
      .console_tty      = 0,                    /* ttyS0 */
      .nr_tty           = 1,
      .tty_map    = { 3, -1, -1, -1 }           /* ttyS0, ..., ttyS3 */
};

static void __init ek_map_io(void)
{
      /* Initialize processor: 18.432 MHz crystal */
      at91sam9261_initialize(18432000);

      /* Setup the LEDs */
      at91_init_leds(AT91_PIN_PA13, AT91_PIN_PA14);

      /* Setup the serial ports and console */
      at91_init_serial(&ek_uart_config);
}

static void __init ek_init_irq(void)
{
      at91sam9261_init_interrupts(NULL);
}


/*
 * DM9000 ethernet device
 */
#if defined(CONFIG_DM9000)
static struct resource at91sam9261_dm9000_resource[] = {
      [0] = {
            .start      = AT91_CHIPSELECT_2,
            .end  = AT91_CHIPSELECT_2 + 3,
            .flags      = IORESOURCE_MEM
      },
      [1] = {
            .start      = AT91_CHIPSELECT_2 + 0x44,
            .end  = AT91_CHIPSELECT_2 + 0xFF,
            .flags      = IORESOURCE_MEM
      },
      [2] = {
            .start      = AT91_PIN_PC11,
            .end  = AT91_PIN_PC11,
            .flags      = IORESOURCE_IRQ
      }
};

static struct dm9000_plat_data dm9000_platdata = {
      .flags            = DM9000_PLATF_16BITONLY,
};

static struct platform_device at91sam9261_dm9000_device = {
      .name       = "dm9000",
      .id         = 0,
      .num_resources    = ARRAY_SIZE(at91sam9261_dm9000_resource),
      .resource   = at91sam9261_dm9000_resource,
      .dev        = {
            .platform_data    = &dm9000_platdata,
      }
};

static void __init ek_add_device_dm9000(void)
{
      /*
       * Configure Chip-Select 2 on SMC for the DM9000.
       * Note: These timings were calculated for MASTER_CLOCK = 100000000
       *  according to the DM9000 timings.
       */
      at91_sys_write(AT91_SMC_SETUP(2), AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(0) | AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(0));
      at91_sys_write(AT91_SMC_PULSE(2), AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(8) | AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(8));
      at91_sys_write(AT91_SMC_CYCLE(2), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
      at91_sys_write(AT91_SMC_MODE(2), AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));

      /* Configure Reset signal as output */
      at91_set_gpio_output(AT91_PIN_PC10, 0);

      /* Configure Interrupt pin as input, no pull-up */
      at91_set_gpio_input(AT91_PIN_PC11, 0);

      platform_device_register(&at91sam9261_dm9000_device);
}
#else
static void __init ek_add_device_dm9000(void) {}
#endif /* CONFIG_DM9000 */


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


/*
 * USB Device Port
 */
static struct at91_udc_data __initdata ek_udc_data = {
      .vbus_pin   = AT91_PIN_PB29,
      .pullup_pin = 0,        /* pull-up driven by UDC */
};


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


/*
 * NAND flash
 */
static struct mtd_partition __initdata ek_nand_partition[] = {
      {
            .name = "Partition 1",
            .offset     = 0,
            .size = 256 * 1024,
      },
      {
            .name = "Partition 2",
            .offset     = 256 * 1024 ,
            .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 at91_nand_data __initdata ek_nand_data = {
      .ale        = 22,
      .cle        = 21,
//    .det_pin    = ... not connected
      .rdy_pin    = AT91_PIN_PC15,
      .enable_pin = AT91_PIN_PC14,
      .partition_info   = nand_partitions,
#if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
      .bus_width_16     = 1,
#else
      .bus_width_16     = 0,
#endif
};

/*
 * 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_PC2);      /* 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_PC2, 1); /* External IRQ0, with pullup */
      at91_set_gpio_input(AT91_PIN_PA11, 1);    /* Touchscreen BUSY signal */
}
#else
static void __init ek_add_device_ts(void) {}
#endif

/*
 * SPI devices
 */
static struct spi_board_info ek_spi_devices[] = {
      {     /* DataFlash chip */
            .modalias   = "mtd_dataflash",
            .chip_select      = 0,
            .max_speed_hz     = 15 * 1000 * 1000,
            .bus_num    = 0,
      },
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
      {
            .modalias   = "ads7846",
            .chip_select      = 2,
            .max_speed_hz     = 125000 * 26,    /* (max sample rate @ 3V) * (cmd + data + overhead) */
            .bus_num    = 0,
            .platform_data    = &ads_info,
            .irq        = AT91SAM9261_ID_IRQ0,
      },
#endif
#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
      {     /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */
            .modalias   = "mtd_dataflash",
            .chip_select      = 3,
            .max_speed_hz     = 15 * 1000 * 1000,
            .bus_num    = 0,
      },
#elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
      {     /* AT73C213 DAC */
            .modalias   = "at73c213",
            .chip_select      = 3,
            .max_speed_hz     = 10 * 1000 * 1000,
            .bus_num    = 0,
      },
#endif
};


/*
 * 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        = "TX09D50VM1CCA",

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

#define AT91SAM9261_DEFAULT_LCDCON2       (ATMEL_LCDC_MEMOR_LITTLE \
                              | ATMEL_LCDC_DISTYPE_TFT    \
                              | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)

static void at91_lcdc_power_control(int on)
{
      if (on)
            at91_set_gpio_value(AT91_PIN_PA12, 0);    /* power up */
      else
            at91_set_gpio_value(AT91_PIN_PA12, 1);    /* power down */
}

/* Driver datas */
static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
      .default_bpp                  = 16,
      .default_dmacon               = ATMEL_LCDC_DMAEN,
      .default_lcdcon2        = AT91SAM9261_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[] = {
      {
            .gpio       = AT91_PIN_PA27,
            .keycode    = BTN_0,
            .desc       = "Button 0",
            .active_low = 1,
      },
      {
            .gpio       = AT91_PIN_PA26,
            .keycode    = BTN_1,
            .desc       = "Button 1",
            .active_low = 1,
      },
      {
            .gpio       = AT91_PIN_PA25,
            .keycode    = BTN_2,
            .desc       = "Button 2",
            .active_low = 1,
      },
      {
            .gpio       = AT91_PIN_PA24,
            .keycode    = BTN_3,
            .desc       = "Button 3",
            .active_low = 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_input(AT91_PIN_PA27, 0);    /* btn0 */
      at91_set_deglitch(AT91_PIN_PA27, 1);
      at91_set_gpio_input(AT91_PIN_PA26, 0);    /* btn1 */
      at91_set_deglitch(AT91_PIN_PA26, 1);
      at91_set_gpio_input(AT91_PIN_PA25, 0);    /* btn2 */
      at91_set_deglitch(AT91_PIN_PA25, 1);
      at91_set_gpio_input(AT91_PIN_PA24, 0);    /* btn3 */
      at91_set_deglitch(AT91_PIN_PA24, 1);

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

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);
      /* I2C */
      at91_add_device_i2c(NULL, 0);
      /* NAND */
      at91_add_device_nand(&ek_nand_data);
      /* DM9000 ethernet */
      ek_add_device_dm9000();

      /* spi0 and mmc/sd share the same PIO pins */
#if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
      /* SPI */
      at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
      /* Touchscreen */
      ek_add_device_ts();
#else
      /* MMC */
      at91_add_device_mmc(0, &ek_mmc_data);
#endif
      /* LCD Controller */
      at91_add_device_lcdc(&ek_lcdc_data);
      /* Push Buttons */
      ek_add_device_buttons();
}

MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-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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