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board-cap9adk.c

/*
 * linux/arch/arm/mach-at91/board-cap9adk.c
 *
 *  Copyright (C) 2007 Stelian Pop <stelian.pop@leadtechdesign.com>
 *  Copyright (C) 2007 Lead Tech Design <www.leadtechdesign.com>
 *  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/fb.h>
#include <linux/mtd/physmap.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/at91cap9_matrix.h>
#include <asm/arch/at91sam9_smc.h>

#include "generic.h"


static void __init cap9adk_map_io(void)
{
      /* Initialize processor: 12 MHz crystal */
      at91cap9_initialize(12000000);

      /* Setup the LEDs: USER1 and USER2 LED for cpu/timer... */
      at91_init_leds(AT91_PIN_PA10, AT91_PIN_PA11);
      /* ... POWER LED always on */
      at91_set_gpio_output(AT91_PIN_PC29, 1);

      /* Setup the serial ports and console */
      at91_register_uart(0, 0, 0);        /* DBGU = ttyS0 */
      at91_set_serial_console(0);
}

static void __init cap9adk_init_irq(void)
{
      at91cap9_init_interrupts(NULL);
}


/*
 * USB Host port
 */
static struct at91_usbh_data __initdata cap9adk_usbh_data = {
      .ports            = 2,
};


/*
 * 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_PC4);      /* 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 cap9adk_add_device_ts(void)
{
      at91_set_gpio_input(AT91_PIN_PC4, 1);     /* Touchscreen PENIRQ */
      at91_set_gpio_input(AT91_PIN_PC5, 1);     /* Touchscreen BUSY */
}
#else
static void __init cap9adk_add_device_ts(void) {}
#endif


/*
 * SPI devices.
 */
static struct spi_board_info cap9adk_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,        /* can be 2 or 3, depending on J2 jumper */
            .max_speed_hz     = 125000 * 26,    /* (max sample rate @ 3V) * (cmd + data + overhead) */
            .bus_num    = 0,
            .platform_data    = &ads_info,
            .irq        = AT91_PIN_PC4,
      },
#endif
};


/*
 * MCI (SD/MMC)
 */
static struct at91_mmc_data __initdata cap9adk_mmc_data = {
      .wire4            = 1,
//    .det_pin    = ... not connected
//    .wp_pin           = ... not connected
//    .vcc_pin    = ... not connected
};


/*
 * MACB Ethernet device
 */
static struct at91_eth_data __initdata cap9adk_macb_data = {
      .is_rmii    = 1,
};


/*
 * NAND flash
 */
static struct mtd_partition __initdata cap9adk_nand_partitions[] = {
      {
            .name = "NAND partition",
            .offset     = 0,
            .size = MTDPART_SIZ_FULL,
      },
};

static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
{
      *num_partitions = ARRAY_SIZE(cap9adk_nand_partitions);
      return cap9adk_nand_partitions;
}

static struct at91_nand_data __initdata cap9adk_nand_data = {
      .ale        = 21,
      .cle        = 22,
//    .det_pin    = ... not connected
//    .rdy_pin    = ... not connected
      .enable_pin = AT91_PIN_PD15,
      .partition_info   = nand_partitions,
#if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
      .bus_width_16     = 1,
#else
      .bus_width_16     = 0,
#endif
};


/*
 * NOR flash
 */
static struct mtd_partition cap9adk_nor_partitions[] = {
      {
            .name       = "NOR partition",
            .offset           = 0,
            .size       = MTDPART_SIZ_FULL,
      },
};

static struct physmap_flash_data cap9adk_nor_data = {
      .width            = 2,
      .parts            = cap9adk_nor_partitions,
      .nr_parts   = ARRAY_SIZE(cap9adk_nor_partitions),
};

#define NOR_BASE  AT91_CHIPSELECT_0
#define NOR_SIZE  0x800000

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

static struct platform_device cap9adk_nor_flash = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev        = {
                        .platform_data    = &cap9adk_nor_data,
      },
      .resource   = nor_flash_resources,
      .num_resources    = ARRAY_SIZE(nor_flash_resources),
};

static __init void cap9adk_add_device_nor(void)
{
      unsigned long csa;

      csa = at91_sys_read(AT91_MATRIX_EBICSA);
      at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);

      /* set the bus interface characteristics */
      at91_sys_write(AT91_SMC_SETUP(0), AT91_SMC_NWESETUP_(4) | AT91_SMC_NCS_WRSETUP_(2)
                  | AT91_SMC_NRDSETUP_(4) | AT91_SMC_NCS_RDSETUP_(2));

      at91_sys_write(AT91_SMC_PULSE(0), AT91_SMC_NWEPULSE_(8) | AT91_SMC_NCS_WRPULSE_(10)
                  | AT91_SMC_NRDPULSE_(8) | AT91_SMC_NCS_RDPULSE_(10));

      at91_sys_write(AT91_SMC_CYCLE(0), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));

      at91_sys_write(AT91_SMC_MODE(0), AT91_SMC_READMODE | AT91_SMC_WRITEMODE
                  | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
                  | AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));

      platform_device_register(&cap9adk_nor_flash);
}


/*
 * 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 AT91CAP9_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_PC0, 0);     /* power up */
      else
            at91_set_gpio_value(AT91_PIN_PC0, 1);     /* power down */
}

/* Driver datas */
static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data = {
      .default_bpp                  = 16,
      .default_dmacon               = ATMEL_LCDC_DMAEN,
      .default_lcdcon2        = AT91CAP9_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 cap9adk_lcdc_data;
#endif


/*
 * AC97
 */
static struct atmel_ac97_data cap9adk_ac97_data = {
//    .reset_pin  = ... not connected
};


static void __init cap9adk_board_init(void)
{
      /* Serial */
      at91_add_device_serial();
      /* USB Host */
      set_irq_type(AT91CAP9_ID_UHP, IRQT_HIGH);
      at91_add_device_usbh(&cap9adk_usbh_data);
      /* SPI */
      at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
      /* Touchscreen */
      cap9adk_add_device_ts();
      /* MMC */
      at91_add_device_mmc(1, &cap9adk_mmc_data);
      /* Ethernet */
      at91_add_device_eth(&cap9adk_macb_data);
      /* NAND */
      at91_add_device_nand(&cap9adk_nand_data);
      /* NOR Flash */
      cap9adk_add_device_nor();
      /* I2C */
      at91_add_device_i2c(NULL, 0);
      /* LCD Controller */
      set_irq_type(AT91CAP9_ID_LCDC, IRQT_HIGH);
      at91_add_device_lcdc(&cap9adk_lcdc_data);
      /* AC97 */
      at91_add_device_ac97(&cap9adk_ac97_data);
}

MACHINE_START(AT91CAP9ADK, "Atmel AT91CAP9A-DK")
      /* Maintainer: Stelian Pop <stelian.pop@leadtechdesign.com> */
      .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           = cap9adk_map_io,
      .init_irq   = cap9adk_init_irq,
      .init_machine     = cap9adk_board_init,
MACHINE_END

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