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eukrea_mbimx27-baseboard.c

/*
 * Copyright (C) 2009-2010 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/gpio.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/backlight.h>
#include <video/platform_lcd.h>

#include <asm/mach/arch.h>

#include <mach/common.h>
#include <mach/iomux-mx27.h>
#include <mach/hardware.h>
#include <mach/spi.h>
#include <mach/audmux.h>

#include "devices-imx27.h"

static const int eukrea_mbimx27_pins[] __initconst = {
      /* UART2 */
      PE3_PF_UART2_CTS,
      PE4_PF_UART2_RTS,
      PE6_PF_UART2_TXD,
      PE7_PF_UART2_RXD,
      /* UART3 */
      PE8_PF_UART3_TXD,
      PE9_PF_UART3_RXD,
      PE10_PF_UART3_CTS,
      PE11_PF_UART3_RTS,
      /* UART4 */
#if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
      PB26_AF_UART4_RTS,
      PB28_AF_UART4_TXD,
      PB29_AF_UART4_CTS,
      PB31_AF_UART4_RXD,
#endif
      /* 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,
      /* display */
      PA5_PF_LSCLK,
      PA6_PF_LD0,
      PA7_PF_LD1,
      PA8_PF_LD2,
      PA9_PF_LD3,
      PA10_PF_LD4,
      PA11_PF_LD5,
      PA12_PF_LD6,
      PA13_PF_LD7,
      PA14_PF_LD8,
      PA15_PF_LD9,
      PA16_PF_LD10,
      PA17_PF_LD11,
      PA18_PF_LD12,
      PA19_PF_LD13,
      PA20_PF_LD14,
      PA21_PF_LD15,
      PA22_PF_LD16,
      PA23_PF_LD17,
      PA28_PF_HSYNC,
      PA29_PF_VSYNC,
      PA30_PF_CONTRAST,
      PA31_PF_OE_ACD,
      /* SPI1 */
      PD29_PF_CSPI1_SCLK,
      PD30_PF_CSPI1_MISO,
      PD31_PF_CSPI1_MOSI,
      /* SSI4 */
#if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
      || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
      PC16_PF_SSI4_FS,
      PC17_PF_SSI4_RXD | GPIO_PUEN,
      PC18_PF_SSI4_TXD | GPIO_PUEN,
      PC19_PF_SSI4_CLK,
#endif
};

static const uint32_t eukrea_mbimx27_keymap[] = {
      KEY(0, 0, KEY_UP),
      KEY(0, 1, KEY_DOWN),
      KEY(1, 0, KEY_RIGHT),
      KEY(1, 1, KEY_LEFT),
};

static const struct matrix_keymap_data
eukrea_mbimx27_keymap_data __initconst = {
      .keymap         = eukrea_mbimx27_keymap,
      .keymap_size    = ARRAY_SIZE(eukrea_mbimx27_keymap),
};

static struct gpio_led gpio_leds[] = {
      {
            .name             = "led1",
            .default_trigger  = "heartbeat",
            .active_low       = 1,
            .gpio             = GPIO_PORTF | 16,
      },
      {
            .name             = "led2",
            .default_trigger  = "none",
            .active_low       = 1,
            .gpio             = GPIO_PORTF | 19,
      },
};

static struct gpio_led_platform_data gpio_led_info = {
      .leds       = gpio_leds,
      .num_leds   = ARRAY_SIZE(gpio_leds),
};

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

static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
      {
            .mode = {
                  .name       = "CMO-QVGA",
                  .refresh    = 60,
                  .xres       = 320,
                  .yres       = 240,
                  .pixclock   = 156000,
                  .hsync_len  = 30,
                  .left_margin      = 38,
                  .right_margin     = 20,
                  .vsync_len  = 3,
                  .upper_margin     = 15,
                  .lower_margin     = 4,
            },
            .pcr        = 0xFAD08B80,
            .bpp        = 16,
      }, {
            .mode = {
                  .name       = "DVI-VGA",
                  .refresh    = 60,
                  .xres       = 640,
                  .yres       = 480,
                  .pixclock   = 32000,
                  .hsync_len  = 1,
                  .left_margin      = 35,
                  .right_margin     = 0,
                  .vsync_len  = 1,
                  .upper_margin     = 7,
                  .lower_margin     = 0,
            },
            .pcr        = 0xFA208B80,
            .bpp        = 16,
      }, {
            .mode = {
                  .name       = "DVI-SVGA",
                  .refresh    = 60,
                  .xres       = 800,
                  .yres       = 600,
                  .pixclock   = 25000,
                  .hsync_len  = 1,
                  .left_margin      = 35,
                  .right_margin     = 0,
                  .vsync_len  = 1,
                  .upper_margin     = 7,
                  .lower_margin     = 0,
            },
            .pcr        = 0xFA208B80,
            .bpp        = 16,
      },
};

static const struct imx_fb_platform_data eukrea_mbimx27_fb_data __initconst = {
      .mode = eukrea_mbimx27_modes,
      .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),

      .pwmr       = 0x00A903FF,
      .lscr1            = 0x00120300,
      .dmacr            = 0x00040060,
};

static void eukrea_mbimx27_bl_set_intensity(int intensity)
{
      if (intensity)
            gpio_direction_output(GPIO_PORTE | 5, 1);
      else
            gpio_direction_output(GPIO_PORTE | 5, 0);
}

static struct generic_bl_info eukrea_mbimx27_bl_info = {
      .name             = "eukrea_mbimx27-bl",
      .max_intensity          = 0xff,
      .default_intensity      = 0xff,
      .set_bl_intensity = eukrea_mbimx27_bl_set_intensity,
};

static struct platform_device eukrea_mbimx27_bl_dev = {
      .name             = "generic-bl",
      .id               = 1,
      .dev = {
            .platform_data    = &eukrea_mbimx27_bl_info,
      },
};

static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
                           unsigned int power)
{
      if (power)
            gpio_direction_output(GPIO_PORTA | 25, 1);
      else
            gpio_direction_output(GPIO_PORTA | 25, 0);
}

static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
      .set_power        = eukrea_mbimx27_lcd_power_set,
};

static struct platform_device eukrea_mbimx27_lcd_powerdev = {
      .name             = "platform-lcd",
      .dev.platform_data      = &eukrea_mbimx27_lcd_power_data,
};

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

#define ADS7846_PENDOWN (GPIO_PORTD | 25)

static void ads7846_dev_init(void)
{
      if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
            printk(KERN_ERR "can't get ads746 pen down GPIO\n");
            return;
      }
      gpio_direction_input(ADS7846_PENDOWN);
}

static int ads7846_get_pendown_state(void)
{
      return !gpio_get_value(ADS7846_PENDOWN);
}

static struct ads7846_platform_data ads7846_config __initdata = {
      .get_pendown_state      = ads7846_get_pendown_state,
      .keep_vref_on           = 1,
};

static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
      [0] = {
            .modalias   = "ads7846",
            .bus_num    = 0,
            .chip_select      = 0,
            .max_speed_hz     = 1500000,
            .irq        = IRQ_GPIOD(25),
            .platform_data    = &ads7846_config,
            .mode           = SPI_MODE_2,
      },
};

static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};

static const struct spi_imx_master eukrea_mbimx27_spi0_data __initconst = {
      .chipselect = eukrea_mbimx27_spi_cs,
      .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
};

static struct i2c_board_info eukrea_mbimx27_i2c_devices[] = {
      {
            I2C_BOARD_INFO("tlv320aic23", 0x1a),
      },
};

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

static const struct imxmmc_platform_data sdhc_pdata __initconst = {
      .dat3_card_detect = 1,
};

static const
struct imx_ssi_platform_data eukrea_mbimx27_ssi_pdata __initconst = {
      .flags = IMX_SSI_DMA | IMX_SSI_USE_I2S_SLAVE,
};

/*
 * system init for baseboard usage. Will be called by cpuimx27 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_mbimx27_baseboard_init(void)
{
      mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
            ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");

#if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
      || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
      /* SSI unit master I2S codec connected to SSI_PINS_4*/
      mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
                  MXC_AUDMUX_V1_PCR_SYN |
                  MXC_AUDMUX_V1_PCR_TFSDIR |
                  MXC_AUDMUX_V1_PCR_TCLKDIR |
                  MXC_AUDMUX_V1_PCR_RFSDIR |
                  MXC_AUDMUX_V1_PCR_RCLKDIR |
                  MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
                  MXC_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
                  MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
      );
      mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
                  MXC_AUDMUX_V1_PCR_SYN |
                  MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
      );
#endif

      imx27_add_imx_uart1(&uart_pdata);
      imx27_add_imx_uart2(&uart_pdata);
#if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
      imx27_add_imx_uart3(&uart_pdata);
#endif

      imx27_add_imx_fb(&eukrea_mbimx27_fb_data);
      imx27_add_mxc_mmc(0, &sdhc_pdata);

      i2c_register_board_info(0, eukrea_mbimx27_i2c_devices,
                        ARRAY_SIZE(eukrea_mbimx27_i2c_devices));

      imx27_add_imx_ssi(0, &eukrea_mbimx27_ssi_pdata);

#if defined(CONFIG_TOUCHSCREEN_ADS7846) \
      || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
      /* ADS7846 Touchscreen controller init */
      mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
      ads7846_dev_init();
#endif

#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
      /* SPI_CS0 init */
      mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
      imx27_add_spi_imx0(&eukrea_mbimx27_spi0_data);
      spi_register_board_info(eukrea_mbimx27_spi_board_info,
                  ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
#endif

      /* Leds configuration */
      mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
      mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
      /* Backlight */
      mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
      gpio_request(GPIO_PORTE | 5, "backlight");
      platform_device_register(&eukrea_mbimx27_bl_dev);
      /* LCD Reset */
      mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT);
      gpio_request(GPIO_PORTA | 25, "lcd_enable");
      platform_device_register(&eukrea_mbimx27_lcd_powerdev);

      imx27_add_imx_keypad(&eukrea_mbimx27_keymap_data);

      platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}

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