mx31lilly-db.c

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/*
 *  LILLY-1131 development board support
 *
 *    Copyright (c) 2009 Daniel Mack <[email protected]>
 *
 *  based on code for other MX31 boards,
 *
 *    Copyright 2005-2007 Freescale Semiconductor
 *    Copyright (c) 2009 Alberto Panizzo <[email protected]>
 *    Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>

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

#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/iomux-mx3.h>
#include <mach/board-mx31lilly.h>

#include "devices-imx31.h"

/*
 * This file contains board-specific initialization routines for the
 * LILLY-1131 development board. If you design an own baseboard for the
 * module, use this file as base for support code.
 */

static unsigned int lilly_db_board_pins[] __initdata = {
    MX31_PIN_CTS1__CTS1,
    MX31_PIN_RTS1__RTS1,
    MX31_PIN_TXD1__TXD1,
    MX31_PIN_RXD1__RXD1,
    MX31_PIN_CTS2__CTS2,
    MX31_PIN_RTS2__RTS2,
    MX31_PIN_TXD2__TXD2,
    MX31_PIN_RXD2__RXD2,
    MX31_PIN_CSPI3_MOSI__RXD3,
    MX31_PIN_CSPI3_MISO__TXD3,
    MX31_PIN_CSPI3_SCLK__RTS3,
    MX31_PIN_CSPI3_SPI_RDY__CTS3,
    MX31_PIN_SD1_DATA3__SD1_DATA3,
    MX31_PIN_SD1_DATA2__SD1_DATA2,
    MX31_PIN_SD1_DATA1__SD1_DATA1,
    MX31_PIN_SD1_DATA0__SD1_DATA0,
    MX31_PIN_SD1_CLK__SD1_CLK,
    MX31_PIN_SD1_CMD__SD1_CMD,
    MX31_PIN_LD0__LD0,
    MX31_PIN_LD1__LD1,
    MX31_PIN_LD2__LD2,
    MX31_PIN_LD3__LD3,
    MX31_PIN_LD4__LD4,
    MX31_PIN_LD5__LD5,
    MX31_PIN_LD6__LD6,
    MX31_PIN_LD7__LD7,
    MX31_PIN_LD8__LD8,
    MX31_PIN_LD9__LD9,
    MX31_PIN_LD10__LD10,
    MX31_PIN_LD11__LD11,
    MX31_PIN_LD12__LD12,
    MX31_PIN_LD13__LD13,
    MX31_PIN_LD14__LD14,
    MX31_PIN_LD15__LD15,
    MX31_PIN_LD16__LD16,
    MX31_PIN_LD17__LD17,
    MX31_PIN_VSYNC3__VSYNC3,
    MX31_PIN_HSYNC__HSYNC,
    MX31_PIN_FPSHIFT__FPSHIFT,
    MX31_PIN_DRDY0__DRDY0,
    MX31_PIN_CONTRAST__CONTRAST,
};

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

/* MMC support */

static int mxc_mmc1_get_ro(struct device *dev)
{
    return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
}

static int gpio_det, gpio_wp;

#define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
            PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)

static int mxc_mmc1_init(struct device *dev,
             irq_handler_t detect_irq, void *data)
{
    int ret;

    gpio_det = IOMUX_TO_GPIO(MX31_PIN_GPIO1_1);
    gpio_wp = IOMUX_TO_GPIO(MX31_PIN_LCS0);

    mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG);

    ret = gpio_request(gpio_det, "MMC detect");
    if (ret)
        return ret;

    ret = gpio_request(gpio_wp, "MMC w/p");
    if (ret)
        goto exit_free_det;

    gpio_direction_input(gpio_det);
    gpio_direction_input(gpio_wp);

    ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)),
              detect_irq,
              IRQF_DISABLED | IRQF_TRIGGER_FALLING,
              "MMC detect", data);
    if (ret)
        goto exit_free_wp;

    return 0;

exit_free_wp:
    gpio_free(gpio_wp);

exit_free_det:
    gpio_free(gpio_det);

    return ret;
}

static void mxc_mmc1_exit(struct device *dev, void *data)
{
    gpio_free(gpio_det);
    gpio_free(gpio_wp);
    free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)), data);
}

static const struct imxmmc_platform_data mmc_pdata __initconst = {
    .get_ro = mxc_mmc1_get_ro,
    .init   = mxc_mmc1_init,
    .exit   = mxc_mmc1_exit,
};

/* Framebuffer support */
static const struct fb_videomode fb_modedb = {
    /* 640x480 TFT panel (IPS-056T) */
    .name       = "CRT-VGA",
    .refresh    = 64,
    .xres       = 640,
    .yres       = 480,
    .pixclock   = 30000,
    .left_margin    = 200,
    .right_margin   = 2,
    .upper_margin   = 2,
    .lower_margin   = 2,
    .hsync_len  = 3,
    .vsync_len  = 1,
    .sync       = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
    .vmode      = FB_VMODE_NONINTERLACED,
    .flag       = 0,
};

static struct mx3fb_platform_data fb_pdata __initdata = {
    .name       = "CRT-VGA",
    .mode       = &fb_modedb,
    .num_modes  = 1,
};

#define LCD_VCC_EN_GPIO  (7)

static void __init mx31lilly_init_fb(void)
{
    if (gpio_request(LCD_VCC_EN_GPIO, "LCD enable") != 0) {
        printk(KERN_WARNING "unable to request LCD_VCC_EN pin.\n");
        return;
    }

    imx31_add_ipu_core();
    imx31_add_mx3_sdc_fb(&fb_pdata);
    gpio_direction_output(LCD_VCC_EN_GPIO, 1);
}

void __init mx31lilly_db_init(void)
{
    mxc_iomux_setup_multiple_pins(lilly_db_board_pins,
                    ARRAY_SIZE(lilly_db_board_pins),
                    "development board pins");
    imx31_add_imx_uart0(&uart_pdata);
    imx31_add_imx_uart1(&uart_pdata);
    imx31_add_imx_uart2(&uart_pdata);
    imx31_add_mxc_mmc(0, &mmc_pdata);
    mx31lilly_init_fb();
}