arch/arm/mach-imx/mx31lilly-db.c

   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
  45 static 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
  79 static int mxc_mmc1_get_ro(struct device *dev)
  80 {
  81         return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
  82 }
  83
  84 static 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
  89 static 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
 123 exit_free_wp:
 124         gpio_free(gpio_wp);
 125
 126 exit_free_det:
 127         gpio_free(gpio_det);
 128
 129         return ret;
 130 }
 131
 132 static 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
 139 static 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 */
 146 static 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
 164 static 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
 172 static 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
 184 void __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 }