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 <env.h>
   9 #include <linux/list.h>
  10 #include <asm/gpio.h>
  11 #include <asm/arch/iomux-mx51.h>
  12 #include <linux/fb.h>
  13 #include <ipu_pixfmt.h>
  14
  15 #define MX51EVK_LCD_3V3         IMX_GPIO_NR(4, 9)
  16 #define MX51EVK_LCD_5V          IMX_GPIO_NR(4, 10)
  17 #define MX51EVK_LCD_BACKLIGHT   IMX_GPIO_NR(3, 4)
  18
  19 static struct fb_videomode const claa_wvga = {
  20         .name           = "CLAA07LC0ACW",
  21         .refresh        = 57,
  22         .xres           = 800,
  23         .yres           = 480,
  24         .pixclock       = 37037,
  25         .left_margin    = 40,
  26         .right_margin   = 60,
  27         .upper_margin   = 10,
  28         .lower_margin   = 10,
  29         .hsync_len      = 20,
  30         .vsync_len      = 10,
  31         .sync           = 0,
  32         .vmode          = FB_VMODE_NONINTERLACED
  33 };
  34
  35 static struct fb_videomode const dvi = {
  36         .name           = "DVI panel",
  37         .refresh        = 60,
  38         .xres           = 1024,
  39         .yres           = 768,
  40         .pixclock       = 15385,
  41         .left_margin    = 220,
  42         .right_margin   = 40,
  43         .upper_margin   = 21,
  44         .lower_margin   = 7,
  45         .hsync_len      = 60,
  46         .vsync_len      = 10,
  47         .sync           = 0,
  48         .vmode          = FB_VMODE_NONINTERLACED
  49 };
  50
  51 void setup_iomux_lcd(void)
  52 {
  53         /* DI2_PIN15 */
  54         imx_iomux_v3_setup_pad(MX51_PAD_DI_GP4__DI2_PIN15);
  55
  56         /* Pad settings for DI2_DISP_CLK */
  57         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI2_DISP_CLK__DI2_DISP_CLK,
  58                             PAD_CTL_PKE | PAD_CTL_DSE_MAX | PAD_CTL_SRE_SLOW));
  59
  60         /* Turn on 3.3V voltage for LCD */
  61         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D12__GPIO4_9,
  62                                                 NO_PAD_CTRL));
  63         gpio_direction_output(MX51EVK_LCD_3V3, 1);
  64
  65         /* Turn on 5V voltage for LCD */
  66         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D13__GPIO4_10,
  67                                                 NO_PAD_CTRL));
  68         gpio_direction_output(MX51EVK_LCD_5V, 1);
  69
  70         /* Turn on GPIO backlight */
  71         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI1_D1_CS__GPIO3_4,
  72                                                 NO_PAD_CTRL));
  73         gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1);
  74 }
  75
  76 int board_video_skip(void)
  77 {
  78         int ret;
  79         char const *e = env_get("panel");
  80
  81         if (e) {
  82                 if (strcmp(e, "claa") == 0) {
  83                         ret = ipuv3_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565);
  84                         if (ret)
  85                                 printf("claa cannot be configured: %d\n", ret);
  86                         return ret;
  87                 }
  88         }
  89
  90         /*
  91          * 'panel' env variable not found or has different value than 'claa'
  92          *  Defaulting to dvi output.
  93          */
  94         ret = ipuv3_fb_init(&dvi, 0, IPU_PIX_FMT_RGB24);
  95         if (ret)
  96                 printf("dvi cannot be configured: %d\n", ret);
  97         return ret;
  98 }