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mach-imx27_visstrim_m10.c

/*
 * mach-imx27_visstrim_m10.c
 *
 * Copyright 2010  Javier Martin <javier.martin@vista-silicon.com>
 *
 * Based on mach-pcm038.c, mach-pca100.c, mach-mx27ads.c and others.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/common.h>
#include <mach/iomux.h>

#include "devices-imx27.h"

#define OTG_PHY_CS_GPIO (GPIO_PORTF + 17)
#define SDHC1_IRQ IRQ_GPIOB(25)

static const int visstrim_m10_pins[] __initconst = {
      /* UART1 (console) */
      PE12_PF_UART1_TXD,
      PE13_PF_UART1_RXD,
      PE14_PF_UART1_CTS,
      PE15_PF_UART1_RTS,
      /* FEC */
      PD0_AIN_FEC_TXD0,
      PD1_AIN_FEC_TXD1,
      PD2_AIN_FEC_TXD2,
      PD3_AIN_FEC_TXD3,
      PD4_AOUT_FEC_RX_ER,
      PD5_AOUT_FEC_RXD1,
      PD6_AOUT_FEC_RXD2,
      PD7_AOUT_FEC_RXD3,
      PD8_AF_FEC_MDIO,
      PD9_AIN_FEC_MDC,
      PD10_AOUT_FEC_CRS,
      PD11_AOUT_FEC_TX_CLK,
      PD12_AOUT_FEC_RXD0,
      PD13_AOUT_FEC_RX_DV,
      PD14_AOUT_FEC_RX_CLK,
      PD15_AOUT_FEC_COL,
      PD16_AIN_FEC_TX_ER,
      PF23_AIN_FEC_TX_EN,
      /* SDHC1 */
      PE18_PF_SD1_D0,
      PE19_PF_SD1_D1,
      PE20_PF_SD1_D2,
      PE21_PF_SD1_D3,
      PE22_PF_SD1_CMD,
      PE23_PF_SD1_CLK,
      /* Both I2Cs */
      PD17_PF_I2C_DATA,
      PD18_PF_I2C_CLK,
      PC5_PF_I2C2_SDA,
      PC6_PF_I2C2_SCL,
      /* USB OTG */
      OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
      PC9_PF_USBOTG_DATA0,
      PC11_PF_USBOTG_DATA1,
      PC10_PF_USBOTG_DATA2,
      PC13_PF_USBOTG_DATA3,
      PC12_PF_USBOTG_DATA4,
      PC7_PF_USBOTG_DATA5,
      PC8_PF_USBOTG_DATA6,
      PE25_PF_USBOTG_DATA7,
      PE24_PF_USBOTG_CLK,
      PE2_PF_USBOTG_DIR,
      PE0_PF_USBOTG_NXT,
      PE1_PF_USBOTG_STP,
      PB23_PF_USB_PWR,
      PB24_PF_USB_OC,
};

/* GPIOs used as events for applications */
static struct gpio_keys_button visstrim_gpio_keys[] = {
      {
            .type = EV_KEY,
            .code = KEY_RESTART,
            .gpio = (GPIO_PORTC + 15),
            .desc = "Default config",
            .active_low = 0,
            .wakeup = 1,
      },
      {
            .type = EV_KEY,
            .code = KEY_RECORD,
            .gpio = (GPIO_PORTF + 14),
            .desc = "Record",
            .active_low = 0,
            .wakeup = 1,
      },
      {
            .type   = EV_KEY,
            .code   = KEY_STOP,
            .gpio   = (GPIO_PORTF + 13),
            .desc   = "Stop",
            .active_low = 0,
            .wakeup = 1,
      }
};

static struct gpio_keys_platform_data visstrim_gpio_keys_platform_data = {
      .buttons    = visstrim_gpio_keys,
      .nbuttons   = ARRAY_SIZE(visstrim_gpio_keys),
};

static struct platform_device visstrim_gpio_keys_device = {
      .name = "gpio-keys",
      .id   = -1,
      .dev  = {
            .platform_data    = &visstrim_gpio_keys_platform_data,
      },
};

/* Visstrim_SM10 has a microSD slot connected to sdhc1 */
static int visstrim_m10_sdhc1_init(struct device *dev,
            irq_handler_t detect_irq, void *data)
{
      int ret;

      ret = request_irq(SDHC1_IRQ, detect_irq, IRQF_TRIGGER_FALLING,
                        "mmc-detect", data);
      return ret;
}

static void visstrim_m10_sdhc1_exit(struct device *dev, void *data)
{
      free_irq(SDHC1_IRQ, data);
}

static const struct imxmmc_platform_data visstrim_m10_sdhc_pdata __initconst = {
      .init = visstrim_m10_sdhc1_init,
      .exit = visstrim_m10_sdhc1_exit,
};

/* Visstrim_SM10 NOR flash */
static struct physmap_flash_data visstrim_m10_flash_data = {
      .width = 2,
};

static struct resource visstrim_m10_flash_resource = {
      .start = 0xc0000000,
      .end = 0xc0000000 + SZ_64M - 1,
      .flags = IORESOURCE_MEM,
};

static struct platform_device visstrim_m10_nor_mtd_device = {
      .name = "physmap-flash",
      .id = 0,
      .dev = {
            .platform_data = &visstrim_m10_flash_data,
      },
      .num_resources = 1,
      .resource = &visstrim_m10_flash_resource,
};

static struct platform_device *platform_devices[] __initdata = {
      &visstrim_gpio_keys_device,
      &visstrim_m10_nor_mtd_device,
};

/* Visstrim_M10 uses UART0 as console */
static const struct imxuart_platform_data uart_pdata __initconst = {
      .flags = IMXUART_HAVE_RTSCTS,
};

/* I2C */
static const struct imxi2c_platform_data visstrim_m10_i2c_data __initconst = {
      .bitrate = 100000,
};

static struct pca953x_platform_data visstrim_m10_pca9555_pdata = {
      .gpio_base = 240, /* After MX27 internal GPIOs */
      .invert = 0,
};

static struct i2c_board_info visstrim_m10_i2c_devices[] = {
      {
            I2C_BOARD_INFO("pca9555", 0x20),
            .platform_data = &visstrim_m10_pca9555_pdata,
      },
};

/* USB OTG */
static int otg_phy_init(struct platform_device *pdev)
{
      gpio_set_value(OTG_PHY_CS_GPIO, 0);
      return 0;
}

static const struct mxc_usbh_platform_data
visstrim_m10_usbotg_pdata __initconst = {
      .init = otg_phy_init,
      .portsc     = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
      .flags      = MXC_EHCI_POWER_PINS_ENABLED,
};

static void __init visstrim_m10_board_init(void)
{
      int ret;

      ret = mxc_gpio_setup_multiple_pins(visstrim_m10_pins,
                  ARRAY_SIZE(visstrim_m10_pins), "VISSTRIM_M10");
      if (ret)
            pr_err("Failed to setup pins (%d)\n", ret);

      imx27_add_imx_uart0(&uart_pdata);

      i2c_register_board_info(0, visstrim_m10_i2c_devices,
                        ARRAY_SIZE(visstrim_m10_i2c_devices));
      imx27_add_imx_i2c(0, &visstrim_m10_i2c_data);
      imx27_add_imx_i2c(1, &visstrim_m10_i2c_data);
      imx27_add_mxc_mmc(0, &visstrim_m10_sdhc_pdata);
      imx27_add_mxc_ehci_otg(&visstrim_m10_usbotg_pdata);
      imx27_add_fec(NULL);
      platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}

static void __init visstrim_m10_timer_init(void)
{
      mx27_clocks_init((unsigned long)25000000);
}

static struct sys_timer visstrim_m10_timer = {
      .init = visstrim_m10_timer_init,
};

MACHINE_START(IMX27_VISSTRIM_M10, "Vista Silicon Visstrim_M10")
      .boot_params    = MX27_PHYS_OFFSET + 0x100,
      .map_io         = mx27_map_io,
      .init_irq       = mx27_init_irq,
      .init_machine   = visstrim_m10_board_init,
      .timer          = &visstrim_m10_timer,
MACHINE_END

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