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_CTS1__CTS1,
  47         MX31_PIN_RTS1__RTS1,
  48         MX31_PIN_TXD1__TXD1,
  49         MX31_PIN_RXD1__RXD1,
  50         MX31_PIN_CTS2__CTS2,
  51         MX31_PIN_RTS2__RTS2,
  52         MX31_PIN_TXD2__TXD2,
  53         MX31_PIN_RXD2__RXD2,
  54         MX31_PIN_CSPI3_MOSI__RXD3,
  55         MX31_PIN_CSPI3_MISO__TXD3,
  56         MX31_PIN_CSPI3_SCLK__RTS3,
  57         MX31_PIN_CSPI3_SPI_RDY__CTS3,
  58         MX31_PIN_SD1_DATA3__SD1_DATA3,
  59         MX31_PIN_SD1_DATA2__SD1_DATA2,
  60         MX31_PIN_SD1_DATA1__SD1_DATA1,
  61         MX31_PIN_SD1_DATA0__SD1_DATA0,
  62         MX31_PIN_SD1_CLK__SD1_CLK,
  63         MX31_PIN_SD1_CMD__SD1_CMD,
  64         MX31_PIN_LD0__LD0,
  65         MX31_PIN_LD1__LD1,
  66         MX31_PIN_LD2__LD2,
  67         MX31_PIN_LD3__LD3,
  68         MX31_PIN_LD4__LD4,
  69         MX31_PIN_LD5__LD5,
  70         MX31_PIN_LD6__LD6,
  71         MX31_PIN_LD7__LD7,
  72         MX31_PIN_LD8__LD8,
  73         MX31_PIN_LD9__LD9,
  74         MX31_PIN_LD10__LD10,
  75         MX31_PIN_LD11__LD11,
  76         MX31_PIN_LD12__LD12,
  77         MX31_PIN_LD13__LD13,
  78         MX31_PIN_LD14__LD14,
  79         MX31_PIN_LD15__LD15,
  80         MX31_PIN_LD16__LD16,
  81         MX31_PIN_LD17__LD17,
  82         MX31_PIN_VSYNC3__VSYNC3,
  83         MX31_PIN_HSYNC__HSYNC,
  84         MX31_PIN_FPSHIFT__FPSHIFT,
  85         MX31_PIN_DRDY0__DRDY0,
  86         MX31_PIN_CONTRAST__CONTRAST,
  87 };
  88
  89 /* UART */
  90 static const struct imxuart_platform_data uart_pdata __initconst = {
  91         .flags = IMXUART_HAVE_RTSCTS,
  92 };
  93
  94 /* MMC support */
  95
  96 static int mxc_mmc1_get_ro(struct device *dev)
  97 {
  98         return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
  99 }
 100
 101 static int gpio_det, gpio_wp;
 102
 103 #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 104                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 105
 106 static int mxc_mmc1_init(struct device *dev,
 107                          irq_handler_t detect_irq, void *data)
 108 {
 109         int ret;
 110
 111         gpio_det = IOMUX_TO_GPIO(MX31_PIN_GPIO1_1);
 112         gpio_wp = IOMUX_TO_GPIO(MX31_PIN_LCS0);
 113
 114         mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG);
 115         mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG);
 116         mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG);
 117         mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG);
 118         mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
 119         mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG);
 120
 121         ret = gpio_request(gpio_det, "MMC detect");
 122         if (ret)
 123                 return ret;
 124
 125         ret = gpio_request(gpio_wp, "MMC w/p");
 126         if (ret)
 127                 goto exit_free_det;
 128
 129         gpio_direction_input(gpio_det);
 130         gpio_direction_input(gpio_wp);
 131
 132         ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)),
 133                           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(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)), data);
 155 }
 156
 157 static const struct imxmmc_platform_data mmc_pdata __initconst = {
 158         .get_ro = mxc_mmc1_get_ro,
 159         .init   = mxc_mmc1_init,
 160         .exit   = mxc_mmc1_exit,
 161 };
 162
 163 /* Framebuffer support */
 164 static const struct fb_videomode fb_modedb = {
 165         /* 640x480 TFT panel (IPS-056T) */
 166         .name           = "CRT-VGA",
 167         .refresh        = 64,
 168         .xres           = 640,
 169         .yres           = 480,
 170         .pixclock       = 30000,
 171         .left_margin    = 200,
 172         .right_margin   = 2,
 173         .upper_margin   = 2,
 174         .lower_margin   = 2,
 175         .hsync_len      = 3,
 176         .vsync_len      = 1,
 177         .sync           = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
 178         .vmode          = FB_VMODE_NONINTERLACED,
 179         .flag           = 0,
 180 };
 181
 182 static struct mx3fb_platform_data fb_pdata __initdata = {
 183         .name           = "CRT-VGA",
 184         .mode           = &fb_modedb,
 185         .num_modes      = 1,
 186 };
 187
 188 #define LCD_VCC_EN_GPIO  (7)
 189
 190 static void __init mx31lilly_init_fb(void)
 191 {
 192         if (gpio_request(LCD_VCC_EN_GPIO, "LCD enable") != 0) {
 193                 printk(KERN_WARNING "unable to request LCD_VCC_EN pin.\n");
 194                 return;
 195         }
 196
 197         imx31_add_ipu_core();
 198         imx31_add_mx3_sdc_fb(&fb_pdata);
 199         gpio_direction_output(LCD_VCC_EN_GPIO, 1);
 200 }
 201
 202 void __init mx31lilly_db_init(void)
 203 {
 204         mxc_iomux_setup_multiple_pins(lilly_db_board_pins,
 205                                         ARRAY_SIZE(lilly_db_board_pins),
 206                                         "development board pins");
 207         imx31_add_imx_uart0(&uart_pdata);
 208         imx31_add_imx_uart1(&uart_pdata);
 209         imx31_add_imx_uart2(&uart_pdata);
 210         imx31_add_mxc_mmc(0, &mmc_pdata);
 211         mx31lilly_init_fb();
 212 }