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mx31lilly-db.c

/*
 *  LILLY-1131 development board support
 *
 *    Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
 *
 *  based on code for other MX31 boards,
 *
 *    Copyright 2005-2007 Freescale Semiconductor
 *    Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
 *    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 <mach/mx3fb.h>
#include <mach/ipu.h>

#include "devices-imx31.h"
#include "devices.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(IOMUX_TO_IRQ(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(IOMUX_TO_IRQ(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 struct ipu_platform_data ipu_data __initdata = {
      .irq_base = MXC_IPU_IRQ_START,
};

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 = {
      .dma_dev    = &mx3_ipu.dev,
      .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;
      }

      mxc_register_device(&mx3_ipu, &ipu_data);
      mxc_register_device(&mx3_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();
}


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