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eukrea_mbimxsd-baseboard.c

/*
 * Copyright (C) 2010 Eric Benard - eric@eukrea.com
 *
 * Based on pcm970-baseboard.c which is :
 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
 *
 * 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.
 */

#include <linux/types.h>
#include <linux/init.h>

#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/i2c.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>

#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/imx-uart.h>
#include <mach/iomux-mx51.h>
#include <mach/audmux.h>

#include "devices-imx51.h"
#include "devices.h"

static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
      /* LED */
      MX51_PAD_NANDF_D10__GPIO3_30,
      /* SWITCH */
      _MX51_PAD_NANDF_D9__GPIO3_31 | MUX_PAD_CTRL(PAD_CTL_PUS_22K_UP |
                  PAD_CTL_PKE | PAD_CTL_SRE_FAST |
                  PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
      /* UART2 */
      MX51_PAD_UART2_RXD__UART2_RXD,
      MX51_PAD_UART2_TXD__UART2_TXD,
      /* UART 3 */
      MX51_PAD_UART3_RXD__UART3_RXD,
      MX51_PAD_UART3_TXD__UART3_TXD,
      MX51_PAD_KEY_COL4__UART3_RTS,
      MX51_PAD_KEY_COL5__UART3_CTS,
      /* SD */
      MX51_PAD_SD1_CMD__SD1_CMD,
      MX51_PAD_SD1_CLK__SD1_CLK,
      MX51_PAD_SD1_DATA0__SD1_DATA0,
      MX51_PAD_SD1_DATA1__SD1_DATA1,
      MX51_PAD_SD1_DATA2__SD1_DATA2,
      MX51_PAD_SD1_DATA3__SD1_DATA3,
};

#define GPIO_LED1 IMX_GPIO_NR(3, 30)
#define GPIO_SWITCH1    IMX_GPIO_NR(3, 31)

static struct gpio_led eukrea_mbimxsd_leds[] = {
      {
            .name             = "led1",
            .default_trigger  = "heartbeat",
            .active_low       = 1,
            .gpio             = GPIO_LED1,
      },
};

static struct gpio_led_platform_data eukrea_mbimxsd_led_info = {
      .leds       = eukrea_mbimxsd_leds,
      .num_leds   = ARRAY_SIZE(eukrea_mbimxsd_leds),
};

static struct platform_device eukrea_mbimxsd_leds_gpio = {
      .name = "leds-gpio",
      .id   = -1,
      .dev  = {
            .platform_data    = &eukrea_mbimxsd_led_info,
      },
};

static struct gpio_keys_button eukrea_mbimxsd_gpio_buttons[] = {
      {
            .gpio       = GPIO_SWITCH1,
            .code       = BTN_0,
            .desc       = "BP1",
            .active_low = 1,
            .wakeup           = 1,
      },
};

static struct gpio_keys_platform_data eukrea_mbimxsd_button_data = {
      .buttons    = eukrea_mbimxsd_gpio_buttons,
      .nbuttons   = ARRAY_SIZE(eukrea_mbimxsd_gpio_buttons),
};

static struct platform_device eukrea_mbimxsd_button_device = {
      .name       = "gpio-keys",
      .id         = -1,
      .num_resources    = 0,
      .dev        = {
            .platform_data    = &eukrea_mbimxsd_button_data,
      }
};

static struct platform_device *platform_devices[] __initdata = {
      &eukrea_mbimxsd_leds_gpio,
      &eukrea_mbimxsd_button_device,
};

static const struct imxuart_platform_data uart_pdata __initconst = {
      .flags = IMXUART_HAVE_RTSCTS,
};

static struct i2c_board_info eukrea_mbimxsd_i2c_devices[] = {
      {
            I2C_BOARD_INFO("tlv320aic23", 0x1a),
      },
};

/*
 * system init for baseboard usage. Will be called by cpuimx51sd init.
 *
 * Add platform devices present on this baseboard and init
 * them from CPU side as far as required to use them later on
 */
void __init eukrea_mbimxsd51_baseboard_init(void)
{
      if (mxc_iomux_v3_setup_multiple_pads(eukrea_mbimxsd_pads,
                  ARRAY_SIZE(eukrea_mbimxsd_pads)))
            printk(KERN_ERR "error setting mbimxsd pads !\n");

      imx51_add_imx_uart(1, NULL);
      imx51_add_imx_uart(2, &uart_pdata);

      imx51_add_sdhci_esdhc_imx(0, NULL);

      gpio_request(GPIO_LED1, "LED1");
      gpio_direction_output(GPIO_LED1, 1);
      gpio_free(GPIO_LED1);

      gpio_request(GPIO_SWITCH1, "SWITCH1");
      gpio_direction_input(GPIO_SWITCH1);
      gpio_free(GPIO_SWITCH1);

      i2c_register_board_info(0, eukrea_mbimxsd_i2c_devices,
                        ARRAY_SIZE(eukrea_mbimxsd_i2c_devices));

      platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}

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