eukrea_mbimx27-baseboard.c

Go to the documentation of this file.

/*
 * Copyright (C) 2009-2010 Eric Benard - [email protected]
 *
 * Based on pcm970-baseboard.c which is :
 * Copyright (C) 2008 Juergen Beisert ([email protected])
 *
 * 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 "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 const struct gpio_led eukrea_mbimx27_gpio_leds[] __initconst = {
    {
        .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 const struct gpio_led_platform_data
        eukrea_mbimx27_gpio_led_info __initconst = {
    .leds       = eukrea_mbimx27_gpio_leds,
    .num_leds   = ARRAY_SIZE(eukrea_mbimx27_gpio_leds),
};

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 __maybe_unused ads7846_dev_init(void)
{
    if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
        printk(KERN_ERR "can't get ads7846 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 __maybe_unused
        eukrea_mbimx27_spi_board_info[] __initdata = {
    [0] = {
        .modalias   = "ads7846",
        .bus_num    = 0,
        .chip_select    = 0,
        .max_speed_hz   = 1500000,
        /* irq number is run-time assigned */
        .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 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");

    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

    /* SPI_CS0 init */
    mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
    imx27_add_spi_imx0(&eukrea_mbimx27_spi0_data);
    eukrea_mbimx27_spi_board_info[0].irq = gpio_to_irq(IMX_GPIO_NR(4, 25));
    spi_register_board_info(eukrea_mbimx27_spi_board_info,
            ARRAY_SIZE(eukrea_mbimx27_spi_board_info));

    /* 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);

    gpio_led_register_device(-1, &eukrea_mbimx27_gpio_led_info);
    imx_add_platform_device("eukrea_tlv320", 0, NULL, 0, NULL, 0);
}