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

DEFINITIONS

1. mxc_mmc1_get_ro
2. mxc_mmc1_init
3. mxc_mmc1_exit
4. mx31lilly_init_fb
5. mx31lilly_db_init

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  LILLY-1131 development board support
   4  *
   5  *    Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
   6  *
   7  *  based on code for other MX31 boards,
   8  *
   9  *    Copyright 2005-2007 Freescale Semiconductor
  10  *    Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
  11  *    Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
  12  */
  13 
  14 #include <linux/kernel.h>
  15 #include <linux/types.h>
  16 #include <linux/init.h>
  17 #include <linux/gpio.h>
  18 #include <linux/platform_device.h>
  19 
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/map.h>
  23 
  24 #include "board-mx31lilly.h"
  25 #include "common.h"
  26 #include "devices-imx31.h"
  27 #include "hardware.h"
  28 #include "iomux-mx3.h"
  29 
  30 /*
  31  * This file contains board-specific initialization routines for the
  32  * LILLY-1131 development board. If you design an own baseboard for the
  33  * module, use this file as base for support code.
  34  */
  35 
  36 static unsigned int lilly_db_board_pins[] __initdata = {
  37         MX31_PIN_SD1_DATA3__SD1_DATA3,
  38         MX31_PIN_SD1_DATA2__SD1_DATA2,
  39         MX31_PIN_SD1_DATA1__SD1_DATA1,
  40         MX31_PIN_SD1_DATA0__SD1_DATA0,
  41         MX31_PIN_SD1_CLK__SD1_CLK,
  42         MX31_PIN_SD1_CMD__SD1_CMD,
  43         MX31_PIN_LD0__LD0,
  44         MX31_PIN_LD1__LD1,
  45         MX31_PIN_LD2__LD2,
  46         MX31_PIN_LD3__LD3,
  47         MX31_PIN_LD4__LD4,
  48         MX31_PIN_LD5__LD5,
  49         MX31_PIN_LD6__LD6,
  50         MX31_PIN_LD7__LD7,
  51         MX31_PIN_LD8__LD8,
  52         MX31_PIN_LD9__LD9,
  53         MX31_PIN_LD10__LD10,
  54         MX31_PIN_LD11__LD11,
  55         MX31_PIN_LD12__LD12,
  56         MX31_PIN_LD13__LD13,
  57         MX31_PIN_LD14__LD14,
  58         MX31_PIN_LD15__LD15,
  59         MX31_PIN_LD16__LD16,
  60         MX31_PIN_LD17__LD17,
  61         MX31_PIN_VSYNC3__VSYNC3,
  62         MX31_PIN_HSYNC__HSYNC,
  63         MX31_PIN_FPSHIFT__FPSHIFT,
  64         MX31_PIN_DRDY0__DRDY0,
  65         MX31_PIN_CONTRAST__CONTRAST,
  66 };
  67 
  68 /* MMC support */
  69 
  70 static int mxc_mmc1_get_ro(struct device *dev)
  71 {
  72         return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
  73 }
  74 
  75 static int gpio_det, gpio_wp;
  76 
  77 #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
  78                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
  79 
  80 static int mxc_mmc1_init(struct device *dev,
  81                          irq_handler_t detect_irq, void *data)
  82 {
  83         int ret;
  84 
  85         gpio_det = IOMUX_TO_GPIO(MX31_PIN_GPIO1_1);
  86         gpio_wp = IOMUX_TO_GPIO(MX31_PIN_LCS0);
  87 
  88         mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG);
  89         mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG);
  90         mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG);
  91         mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG);
  92         mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
  93         mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG);
  94 
  95         ret = gpio_request(gpio_det, "MMC detect");
  96         if (ret)
  97                 return ret;
  98 
  99         ret = gpio_request(gpio_wp, "MMC w/p");
 100         if (ret)
 101                 goto exit_free_det;
 102 
 103         gpio_direction_input(gpio_det);
 104         gpio_direction_input(gpio_wp);
 105 
 106         ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)),
 107                           detect_irq, IRQF_TRIGGER_FALLING,
 108                           "MMC detect", data);
 109         if (ret)
 110                 goto exit_free_wp;
 111 
 112         return 0;
 113 
 114 exit_free_wp:
 115         gpio_free(gpio_wp);
 116 
 117 exit_free_det:
 118         gpio_free(gpio_det);
 119 
 120         return ret;
 121 }
 122 
 123 static void mxc_mmc1_exit(struct device *dev, void *data)
 124 {
 125         gpio_free(gpio_det);
 126         gpio_free(gpio_wp);
 127         free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)), data);
 128 }
 129 
 130 static const struct imxmmc_platform_data mmc_pdata __initconst = {
 131         .get_ro = mxc_mmc1_get_ro,
 132         .init   = mxc_mmc1_init,
 133         .exit   = mxc_mmc1_exit,
 134 };
 135 
 136 /* Framebuffer support */
 137 static const struct fb_videomode fb_modedb = {
 138         /* 640x480 TFT panel (IPS-056T) */
 139         .name           = "CRT-VGA",
 140         .refresh        = 64,
 141         .xres           = 640,
 142         .yres           = 480,
 143         .pixclock       = 30000,
 144         .left_margin    = 200,
 145         .right_margin   = 2,
 146         .upper_margin   = 2,
 147         .lower_margin   = 2,
 148         .hsync_len      = 3,
 149         .vsync_len      = 1,
 150         .sync           = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
 151         .vmode          = FB_VMODE_NONINTERLACED,
 152         .flag           = 0,
 153 };
 154 
 155 static struct mx3fb_platform_data fb_pdata __initdata = {
 156         .name           = "CRT-VGA",
 157         .mode           = &fb_modedb,
 158         .num_modes      = 1,
 159 };
 160 
 161 #define LCD_VCC_EN_GPIO  (7)
 162 
 163 static void __init mx31lilly_init_fb(void)
 164 {
 165         if (gpio_request(LCD_VCC_EN_GPIO, "LCD enable") != 0) {
 166                 printk(KERN_WARNING "unable to request LCD_VCC_EN pin.\n");
 167                 return;
 168         }
 169 
 170         imx31_add_ipu_core();
 171         imx31_add_mx3_sdc_fb(&fb_pdata);
 172         gpio_direction_output(LCD_VCC_EN_GPIO, 1);
 173 }
 174 
 175 void __init mx31lilly_db_init(void)
 176 {
 177         mxc_iomux_setup_multiple_pins(lilly_db_board_pins,
 178                                         ARRAY_SIZE(lilly_db_board_pins),
 179                                         "development board pins");
 180         imx31_add_mxc_mmc(0, &mmc_pdata);
 181         mx31lilly_init_fb();
 182 }