board/freescale/mx51evk/mx51evk_video.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2012 Freescale Semiconductor, Inc.
   4  * Fabio Estevam <[email protected]>
   5  */
   6
   7 #include <common.h>
   8 #include <linux/list.h>
   9 #include <asm/gpio.h>
  10 #include <asm/arch/iomux-mx51.h>
  11 #include <linux/fb.h>
  12 #include <ipu_pixfmt.h>
  13
  14 #define MX51EVK_LCD_3V3         IMX_GPIO_NR(4, 9)
  15 #define MX51EVK_LCD_5V          IMX_GPIO_NR(4, 10)
  16 #define MX51EVK_LCD_BACKLIGHT   IMX_GPIO_NR(3, 4)
  17
  18 static struct fb_videomode const claa_wvga = {
  19         .name           = "CLAA07LC0ACW",
  20         .refresh        = 57,
  21         .xres           = 800,
  22         .yres           = 480,
  23         .pixclock       = 37037,
  24         .left_margin    = 40,
  25         .right_margin   = 60,
  26         .upper_margin   = 10,
  27         .lower_margin   = 10,
  28         .hsync_len      = 20,
  29         .vsync_len      = 10,
  30         .sync           = 0,
  31         .vmode          = FB_VMODE_NONINTERLACED
  32 };
  33
  34 static struct fb_videomode const dvi = {
  35         .name           = "DVI panel",
  36         .refresh        = 60,
  37         .xres           = 1024,
  38         .yres           = 768,
  39         .pixclock       = 15385,
  40         .left_margin    = 220,
  41         .right_margin   = 40,
  42         .upper_margin   = 21,
  43         .lower_margin   = 7,
  44         .hsync_len      = 60,
  45         .vsync_len      = 10,
  46         .sync           = 0,
  47         .vmode          = FB_VMODE_NONINTERLACED
  48 };
  49
  50 void setup_iomux_lcd(void)
  51 {
  52         /* DI2_PIN15 */
  53         imx_iomux_v3_setup_pad(MX51_PAD_DI_GP4__DI2_PIN15);
  54
  55         /* Pad settings for DI2_DISP_CLK */
  56         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI2_DISP_CLK__DI2_DISP_CLK,
  57                             PAD_CTL_PKE | PAD_CTL_DSE_MAX | PAD_CTL_SRE_SLOW));
  58
  59         /* Turn on 3.3V voltage for LCD */
  60         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D12__GPIO4_9,
  61                                                 NO_PAD_CTRL));
  62         gpio_direction_output(MX51EVK_LCD_3V3, 1);
  63
  64         /* Turn on 5V voltage for LCD */
  65         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D13__GPIO4_10,
  66                                                 NO_PAD_CTRL));
  67         gpio_direction_output(MX51EVK_LCD_5V, 1);
  68
  69         /* Turn on GPIO backlight */
  70         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI1_D1_CS__GPIO3_4,
  71                                                 NO_PAD_CTRL));
  72         gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1);
  73 }
  74
  75 int board_video_skip(void)
  76 {
  77         int ret;
  78         char const *e = env_get("panel");
  79
  80         if (e) {
  81                 if (strcmp(e, "claa") == 0) {
  82                         ret = ipuv3_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565);
  83                         if (ret)
  84                                 printf("claa cannot be configured: %d\n", ret);
  85                         return ret;
  86                 }
  87         }
  88
  89         /*
  90          * 'panel' env variable not found or has different value than 'claa'
  91          *  Defaulting to dvi output.
  92          */
  93         ret = ipuv3_fb_init(&dvi, 0, IPU_PIX_FMT_RGB24);
  94         if (ret)
  95                 printf("dvi cannot be configured: %d\n", ret);
  96         return ret;
  97 }