arch/arm/mach-mxs/mach-mx23evk.c

   1 /*
   2  * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/delay.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/gpio.h>
  18
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/time.h>
  22
  23 #include <mach/common.h>
  24 #include <mach/iomux-mx23.h>
  25
  26 #include "devices-mx23.h"
  27
  28 #define MX23EVK_LCD_ENABLE      MXS_GPIO_NR(1, 18)
  29 #define MX23EVK_BL_ENABLE       MXS_GPIO_NR(1, 28)
  30 #define MX23EVK_MMC0_WRITE_PROTECT      MXS_GPIO_NR(1, 30)
  31 #define MX23EVK_MMC0_SLOT_POWER         MXS_GPIO_NR(1, 29)
  32
  33 static const iomux_cfg_t mx23evk_pads[] __initconst = {
  34         /* duart */
  35         MX23_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
  36         MX23_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
  37
  38         /* auart */
  39         MX23_PAD_AUART1_RX__AUART1_RX | MXS_PAD_CTRL,
  40         MX23_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
  41         MX23_PAD_AUART1_CTS__AUART1_CTS | MXS_PAD_CTRL,
  42         MX23_PAD_AUART1_RTS__AUART1_RTS | MXS_PAD_CTRL,
  43
  44         /* mxsfb (lcdif) */
  45         MX23_PAD_LCD_D00__LCD_D00 | MXS_PAD_CTRL,
  46         MX23_PAD_LCD_D01__LCD_D01 | MXS_PAD_CTRL,
  47         MX23_PAD_LCD_D02__LCD_D02 | MXS_PAD_CTRL,
  48         MX23_PAD_LCD_D03__LCD_D03 | MXS_PAD_CTRL,
  49         MX23_PAD_LCD_D04__LCD_D04 | MXS_PAD_CTRL,
  50         MX23_PAD_LCD_D05__LCD_D05 | MXS_PAD_CTRL,
  51         MX23_PAD_LCD_D06__LCD_D06 | MXS_PAD_CTRL,
  52         MX23_PAD_LCD_D07__LCD_D07 | MXS_PAD_CTRL,
  53         MX23_PAD_LCD_D08__LCD_D08 | MXS_PAD_CTRL,
  54         MX23_PAD_LCD_D09__LCD_D09 | MXS_PAD_CTRL,
  55         MX23_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
  56         MX23_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
  57         MX23_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
  58         MX23_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
  59         MX23_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
  60         MX23_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
  61         MX23_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
  62         MX23_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
  63         MX23_PAD_GPMI_D08__LCD_D18 | MXS_PAD_CTRL,
  64         MX23_PAD_GPMI_D09__LCD_D19 | MXS_PAD_CTRL,
  65         MX23_PAD_GPMI_D10__LCD_D20 | MXS_PAD_CTRL,
  66         MX23_PAD_GPMI_D11__LCD_D21 | MXS_PAD_CTRL,
  67         MX23_PAD_GPMI_D12__LCD_D22 | MXS_PAD_CTRL,
  68         MX23_PAD_GPMI_D13__LCD_D23 | MXS_PAD_CTRL,
  69         MX23_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
  70         MX23_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
  71         MX23_PAD_LCD_DOTCK__LCD_DOTCK | MXS_PAD_CTRL,
  72         MX23_PAD_LCD_ENABLE__LCD_ENABLE | MXS_PAD_CTRL,
  73         /* LCD panel enable */
  74         MX23_PAD_LCD_RESET__GPIO_1_18 | MXS_PAD_CTRL,
  75         /* backlight control */
  76         MX23_PAD_PWM2__GPIO_1_28 | MXS_PAD_CTRL,
  77
  78         /* mmc */
  79         MX23_PAD_SSP1_DATA0__SSP1_DATA0 |
  80                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  81         MX23_PAD_SSP1_DATA1__SSP1_DATA1 |
  82                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  83         MX23_PAD_SSP1_DATA2__SSP1_DATA2 |
  84                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  85         MX23_PAD_SSP1_DATA3__SSP1_DATA3 |
  86                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  87         MX23_PAD_GPMI_D08__SSP1_DATA4 |
  88                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  89         MX23_PAD_GPMI_D09__SSP1_DATA5 |
  90                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  91         MX23_PAD_GPMI_D10__SSP1_DATA6 |
  92                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  93         MX23_PAD_GPMI_D11__SSP1_DATA7 |
  94                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  95         MX23_PAD_SSP1_CMD__SSP1_CMD |
  96                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  97         MX23_PAD_SSP1_DETECT__SSP1_DETECT |
  98                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
  99         MX23_PAD_SSP1_SCK__SSP1_SCK |
 100                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 101         /* write protect */
 102         MX23_PAD_PWM4__GPIO_1_30 |
 103                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 104         /* slot power enable */
 105         MX23_PAD_PWM3__GPIO_1_29 |
 106                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 107 };
 108
 109 /* mxsfb (lcdif) */
 110 static struct fb_videomode mx23evk_video_modes[] = {
 111         {
 112                 .name           = "Samsung-LMS430HF02",
 113                 .refresh        = 60,
 114                 .xres           = 480,
 115                 .yres           = 272,
 116                 .pixclock       = 108096, /* picosecond (9.2 MHz) */
 117                 .left_margin    = 15,
 118                 .right_margin   = 8,
 119                 .upper_margin   = 12,
 120                 .lower_margin   = 4,
 121                 .hsync_len      = 1,
 122                 .vsync_len      = 1,
 123                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
 124                                   FB_SYNC_DOTCLK_FAILING_ACT,
 125         },
 126 };
 127
 128 static const struct mxsfb_platform_data mx23evk_mxsfb_pdata __initconst = {
 129         .mode_list      = mx23evk_video_modes,
 130         .mode_count     = ARRAY_SIZE(mx23evk_video_modes),
 131         .default_bpp    = 32,
 132         .ld_intf_width  = STMLCDIF_24BIT,
 133 };
 134
 135 static struct mxs_mmc_platform_data mx23evk_mmc_pdata __initdata = {
 136         .wp_gpio = MX23EVK_MMC0_WRITE_PROTECT,
 137         .flags = SLOTF_8_BIT_CAPABLE,
 138 };
 139
 140 static void __init mx23evk_init(void)
 141 {
 142         int ret;
 143
 144         mxs_iomux_setup_multiple_pads(mx23evk_pads, ARRAY_SIZE(mx23evk_pads));
 145
 146         mx23_add_duart();
 147         mx23_add_auart0();
 148
 149         /* power on mmc slot by writing 0 to the gpio */
 150         ret = gpio_request_one(MX23EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
 151                                "mmc0-slot-power");
 152         if (ret)
 153                 pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret);
 154         mx23_add_mxs_mmc(0, &mx23evk_mmc_pdata);
 155
 156         ret = gpio_request_one(MX23EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
 157         if (ret)
 158                 pr_warn("failed to request gpio lcd-enable: %d\n", ret);
 159         else
 160                 gpio_set_value(MX23EVK_LCD_ENABLE, 1);
 161
 162         ret = gpio_request_one(MX23EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
 163         if (ret)
 164                 pr_warn("failed to request gpio bl-enable: %d\n", ret);
 165         else
 166                 gpio_set_value(MX23EVK_BL_ENABLE, 1);
 167
 168         mx23_add_mxsfb(&mx23evk_mxsfb_pdata);
 169 }
 170
 171 static void __init mx23evk_timer_init(void)
 172 {
 173         mx23_clocks_init();
 174 }
 175
 176 static struct sys_timer mx23evk_timer = {
 177         .init   = mx23evk_timer_init,
 178 };
 179
 180 MACHINE_START(MX23EVK, "Freescale MX23 EVK")
 181         /* Maintainer: Freescale Semiconductor, Inc. */
 182         .map_io         = mx23_map_io,
 183         .init_irq       = mx23_init_irq,
 184         .init_machine   = mx23evk_init,
 185         .timer          = &mx23evk_timer,
 186 MACHINE_END