arch/arm/mach-mx3/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  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/types.h>
  29 #include <linux/init.h>
  30 #include <linux/gpio.h>
  31 #include <linux/platform_device.h>
  32 #include <linux/spi/spi.h>
  33 #include <linux/mfd/mc13783.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38
  39 #include <mach/hardware.h>
  40 #include <mach/common.h>
  41 #include <mach/imx-uart.h>
  42 #include <mach/iomux-mx3.h>
  43 #include <mach/board-mx31lilly.h>
  44 #include <mach/mmc.h>
  45 #include <mach/mx3fb.h>
  46 #include <mach/ipu.h>
  47
  48 #include "devices.h"
  49
  50 /*
  51  * This file contains board-specific initialization routines for the
  52  * LILLY-1131 development board. If you design an own baseboard for the
  53  * module, use this file as base for support code.
  54  */
  55
  56 static unsigned int lilly_db_board_pins[] __initdata = {
  57         MX31_PIN_CTS1__CTS1,
  58         MX31_PIN_RTS1__RTS1,
  59         MX31_PIN_TXD1__TXD1,
  60         MX31_PIN_RXD1__RXD1,
  61         MX31_PIN_CTS2__CTS2,
  62         MX31_PIN_RTS2__RTS2,
  63         MX31_PIN_TXD2__TXD2,
  64         MX31_PIN_RXD2__RXD2,
  65         MX31_PIN_CSPI3_MOSI__RXD3,
  66         MX31_PIN_CSPI3_MISO__TXD3,
  67         MX31_PIN_CSPI3_SCLK__RTS3,
  68         MX31_PIN_CSPI3_SPI_RDY__CTS3,
  69         MX31_PIN_SD1_DATA3__SD1_DATA3,
  70         MX31_PIN_SD1_DATA2__SD1_DATA2,
  71         MX31_PIN_SD1_DATA1__SD1_DATA1,
  72         MX31_PIN_SD1_DATA0__SD1_DATA0,
  73         MX31_PIN_SD1_CLK__SD1_CLK,
  74         MX31_PIN_SD1_CMD__SD1_CMD,
  75         MX31_PIN_LD0__LD0,
  76         MX31_PIN_LD1__LD1,
  77         MX31_PIN_LD2__LD2,
  78         MX31_PIN_LD3__LD3,
  79         MX31_PIN_LD4__LD4,
  80         MX31_PIN_LD5__LD5,
  81         MX31_PIN_LD6__LD6,
  82         MX31_PIN_LD7__LD7,
  83         MX31_PIN_LD8__LD8,
  84         MX31_PIN_LD9__LD9,
  85         MX31_PIN_LD10__LD10,
  86         MX31_PIN_LD11__LD11,
  87         MX31_PIN_LD12__LD12,
  88         MX31_PIN_LD13__LD13,
  89         MX31_PIN_LD14__LD14,
  90         MX31_PIN_LD15__LD15,
  91         MX31_PIN_LD16__LD16,
  92         MX31_PIN_LD17__LD17,
  93         MX31_PIN_VSYNC3__VSYNC3,
  94         MX31_PIN_HSYNC__HSYNC,
  95         MX31_PIN_FPSHIFT__FPSHIFT,
  96         MX31_PIN_DRDY0__DRDY0,
  97         MX31_PIN_CONTRAST__CONTRAST,
  98 };
  99
 100 /* UART */
 101 static struct imxuart_platform_data uart_pdata __initdata = {
 102         .flags = IMXUART_HAVE_RTSCTS,
 103 };
 104
 105 /* MMC support */
 106
 107 static int mxc_mmc1_get_ro(struct device *dev)
 108 {
 109         return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
 110 }
 111
 112 static int gpio_det, gpio_wp;
 113
 114 static int mxc_mmc1_init(struct device *dev,
 115                          irq_handler_t detect_irq, void *data)
 116 {
 117         int ret;
 118
 119         gpio_det = IOMUX_TO_GPIO(MX31_PIN_GPIO1_1);
 120         gpio_wp = IOMUX_TO_GPIO(MX31_PIN_LCS0);
 121
 122         ret = gpio_request(gpio_det, "MMC detect");
 123         if (ret)
 124                 return ret;
 125
 126         ret = gpio_request(gpio_wp, "MMC w/p");
 127         if (ret)
 128                 goto exit_free_det;
 129
 130         gpio_direction_input(gpio_det);
 131         gpio_direction_input(gpio_wp);
 132
 133         ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), detect_irq,
 134                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 135                           "MMC detect", data);
 136         if (ret)
 137                 goto exit_free_wp;
 138
 139         return 0;
 140
 141 exit_free_wp:
 142         gpio_free(gpio_wp);
 143
 144 exit_free_det:
 145         gpio_free(gpio_det);
 146
 147         return ret;
 148 }
 149
 150 static void mxc_mmc1_exit(struct device *dev, void *data)
 151 {
 152         gpio_free(gpio_det);
 153         gpio_free(gpio_wp);
 154         free_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), data);
 155 }
 156
 157 static struct imxmmc_platform_data mmc_pdata = {
 158         .get_ro = mxc_mmc1_get_ro,
 159         .init   = mxc_mmc1_init,
 160         .exit   = mxc_mmc1_exit,
 161 };
 162
 163 /* Framebuffer support */
 164 static struct ipu_platform_data ipu_data __initdata = {
 165         .irq_base = MXC_IPU_IRQ_START,
 166 };
 167
 168 static const struct fb_videomode fb_modedb = {
 169         /* 640x480 TFT panel (IPS-056T) */
 170         .name           = "CRT-VGA",
 171         .refresh        = 64,
 172         .xres           = 640,
 173         .yres           = 480,
 174         .pixclock       = 30000,
 175         .left_margin    = 200,
 176         .right_margin   = 2,
 177         .upper_margin   = 2,
 178         .lower_margin   = 2,
 179         .hsync_len      = 3,
 180         .vsync_len      = 1,
 181         .sync           = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
 182         .vmode          = FB_VMODE_NONINTERLACED,
 183         .flag           = 0,
 184 };
 185
 186 static struct mx3fb_platform_data fb_pdata __initdata = {
 187         .dma_dev        = &mx3_ipu.dev,
 188         .name           = "CRT-VGA",
 189         .mode           = &fb_modedb,
 190         .num_modes      = 1,
 191 };
 192
 193 #define LCD_VCC_EN_GPIO  (7)
 194
 195 static void __init mx31lilly_init_fb(void)
 196 {
 197         if (gpio_request(LCD_VCC_EN_GPIO, "LCD enable") != 0) {
 198                 printk(KERN_WARNING "unable to request LCD_VCC_EN pin.\n");
 199                 return;
 200         }
 201
 202         mxc_register_device(&mx3_ipu, &ipu_data);
 203         mxc_register_device(&mx3_fb, &fb_pdata);
 204         gpio_direction_output(LCD_VCC_EN_GPIO, 1);
 205 }
 206
 207 /* SPI */
 208
 209 static struct mc13783_platform_data mc13783_pdata __initdata = {
 210         .flags = MC13783_USE_RTC | MC13783_USE_TOUCHSCREEN,
 211 };
 212
 213 static struct spi_board_info lilly_spi_devs[] __initdata = {
 214         {
 215                 .modalias       = "mc13783",
 216                 .max_speed_hz   = 1000000,
 217                 .bus_num        = 1,
 218                 .chip_select    = 0,
 219                 .platform_data  = &mc13783_pdata,
 220         },
 221 };
 222
 223 void __init mx31lilly_db_init(void)
 224 {
 225         mxc_iomux_setup_multiple_pins(lilly_db_board_pins,
 226                                         ARRAY_SIZE(lilly_db_board_pins),
 227                                         "development board pins");
 228         mxc_register_device(&mxc_uart_device0, &uart_pdata);
 229         mxc_register_device(&mxc_uart_device1, &uart_pdata);
 230         mxc_register_device(&mxc_uart_device2, &uart_pdata);
 231         mxc_register_device(&mxcsdhc_device0, &mmc_pdata);
 232         mx31lilly_init_fb();
 233         spi_register_board_info(lilly_spi_devs, ARRAY_SIZE(lilly_spi_devs));
 234 }
 235