linux/arch/arm/mach-imx/mx31lilly-db.c
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   1/*
   2 *  LILLY-1131 development board support
   3 *
   4 *    Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
   5 *
   6 *  based on code for other MX31 boards,
   7 *
   8 *    Copyright 2005-2007 Freescale Semiconductor
   9 *    Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
  10 *    Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
  11 *
  12 * This program is free software; you can redistribute it and/or modify
  13 * it under the terms of the GNU General Public License as published by
  14 * the Free Software Foundation; either version 2 of the License, or
  15 * (at your option) any later version.
  16 *
  17 * This program is distributed in the hope that it will be useful,
  18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 * GNU General Public License for more details.
  21 */
  22
  23#include <linux/kernel.h>
  24#include <linux/types.h>
  25#include <linux/init.h>
  26#include <linux/gpio.h>
  27#include <linux/platform_device.h>
  28
  29#include <asm/mach-types.h>
  30#include <asm/mach/arch.h>
  31#include <asm/mach/map.h>
  32
  33#include "board-mx31lilly.h"
  34#include "common.h"
  35#include "devices-imx31.h"
  36#include "hardware.h"
  37#include "iomux-mx3.h"
  38
  39/*
  40 * This file contains board-specific initialization routines for the
  41 * LILLY-1131 development board. If you design an own baseboard for the
  42 * module, use this file as base for support code.
  43 */
  44
  45static unsigned int lilly_db_board_pins[] __initdata = {
  46        MX31_PIN_SD1_DATA3__SD1_DATA3,
  47        MX31_PIN_SD1_DATA2__SD1_DATA2,
  48        MX31_PIN_SD1_DATA1__SD1_DATA1,
  49        MX31_PIN_SD1_DATA0__SD1_DATA0,
  50        MX31_PIN_SD1_CLK__SD1_CLK,
  51        MX31_PIN_SD1_CMD__SD1_CMD,
  52        MX31_PIN_LD0__LD0,
  53        MX31_PIN_LD1__LD1,
  54        MX31_PIN_LD2__LD2,
  55        MX31_PIN_LD3__LD3,
  56        MX31_PIN_LD4__LD4,
  57        MX31_PIN_LD5__LD5,
  58        MX31_PIN_LD6__LD6,
  59        MX31_PIN_LD7__LD7,
  60        MX31_PIN_LD8__LD8,
  61        MX31_PIN_LD9__LD9,
  62        MX31_PIN_LD10__LD10,
  63        MX31_PIN_LD11__LD11,
  64        MX31_PIN_LD12__LD12,
  65        MX31_PIN_LD13__LD13,
  66        MX31_PIN_LD14__LD14,
  67        MX31_PIN_LD15__LD15,
  68        MX31_PIN_LD16__LD16,
  69        MX31_PIN_LD17__LD17,
  70        MX31_PIN_VSYNC3__VSYNC3,
  71        MX31_PIN_HSYNC__HSYNC,
  72        MX31_PIN_FPSHIFT__FPSHIFT,
  73        MX31_PIN_DRDY0__DRDY0,
  74        MX31_PIN_CONTRAST__CONTRAST,
  75};
  76
  77/* MMC support */
  78
  79static int mxc_mmc1_get_ro(struct device *dev)
  80{
  81        return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
  82}
  83
  84static int gpio_det, gpio_wp;
  85
  86#define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
  87                        PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
  88
  89static int mxc_mmc1_init(struct device *dev,
  90                         irq_handler_t detect_irq, void *data)
  91{
  92        int ret;
  93
  94        gpio_det = IOMUX_TO_GPIO(MX31_PIN_GPIO1_1);
  95        gpio_wp = IOMUX_TO_GPIO(MX31_PIN_LCS0);
  96
  97        mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG);
  98        mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG);
  99        mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG);
 100        mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG);
 101        mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
 102        mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG);
 103
 104        ret = gpio_request(gpio_det, "MMC detect");
 105        if (ret)
 106                return ret;
 107
 108        ret = gpio_request(gpio_wp, "MMC w/p");
 109        if (ret)
 110                goto exit_free_det;
 111
 112        gpio_direction_input(gpio_det);
 113        gpio_direction_input(gpio_wp);
 114
 115        ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)),
 116                          detect_irq, IRQF_TRIGGER_FALLING,
 117                          "MMC detect", data);
 118        if (ret)
 119                goto exit_free_wp;
 120
 121        return 0;
 122
 123exit_free_wp:
 124        gpio_free(gpio_wp);
 125
 126exit_free_det:
 127        gpio_free(gpio_det);
 128
 129        return ret;
 130}
 131
 132static void mxc_mmc1_exit(struct device *dev, void *data)
 133{
 134        gpio_free(gpio_det);
 135        gpio_free(gpio_wp);
 136        free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)), data);
 137}
 138
 139static const struct imxmmc_platform_data mmc_pdata __initconst = {
 140        .get_ro = mxc_mmc1_get_ro,
 141        .init   = mxc_mmc1_init,
 142        .exit   = mxc_mmc1_exit,
 143};
 144
 145/* Framebuffer support */
 146static const struct fb_videomode fb_modedb = {
 147        /* 640x480 TFT panel (IPS-056T) */
 148        .name           = "CRT-VGA",
 149        .refresh        = 64,
 150        .xres           = 640,
 151        .yres           = 480,
 152        .pixclock       = 30000,
 153        .left_margin    = 200,
 154        .right_margin   = 2,
 155        .upper_margin   = 2,
 156        .lower_margin   = 2,
 157        .hsync_len      = 3,
 158        .vsync_len      = 1,
 159        .sync           = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
 160        .vmode          = FB_VMODE_NONINTERLACED,
 161        .flag           = 0,
 162};
 163
 164static struct mx3fb_platform_data fb_pdata __initdata = {
 165        .name           = "CRT-VGA",
 166        .mode           = &fb_modedb,
 167        .num_modes      = 1,
 168};
 169
 170#define LCD_VCC_EN_GPIO  (7)
 171
 172static void __init mx31lilly_init_fb(void)
 173{
 174        if (gpio_request(LCD_VCC_EN_GPIO, "LCD enable") != 0) {
 175                printk(KERN_WARNING "unable to request LCD_VCC_EN pin.\n");
 176                return;
 177        }
 178
 179        imx31_add_ipu_core();
 180        imx31_add_mx3_sdc_fb(&fb_pdata);
 181        gpio_direction_output(LCD_VCC_EN_GPIO, 1);
 182}
 183
 184void __init mx31lilly_db_init(void)
 185{
 186        mxc_iomux_setup_multiple_pins(lilly_db_board_pins,
 187                                        ARRAY_SIZE(lilly_db_board_pins),
 188                                        "development board pins");
 189        imx31_add_mxc_mmc(0, &mmc_pdata);
 190        mx31lilly_init_fb();
 191}
 192