arch/arm/imx-common/video.c

   1 /*
   2  * SPDX-License-Identifier:     GPL-2.0+
   3  */
   4
   5 #include <common.h>
   6 #include <asm/errno.h>
   7 #include <asm/imx-common/video.h>
   8
   9 extern struct display_info_t const displays[];
  10 extern size_t display_count;
  11
  12 int board_video_skip(void)
  13 {
  14         int i;
  15         int ret;
  16         char const *panel = getenv("panel");
  17         if (!panel) {
  18                 for (i = 0; i < display_count; i++) {
  19                         struct display_info_t const *dev = displays+i;
  20                         if (dev->detect && dev->detect(dev)) {
  21                                 panel = dev->mode.name;
  22                                 printf("auto-detected panel %s\n", panel);
  23                                 break;
  24                         }
  25                 }
  26                 if (!panel) {
  27                         panel = displays[0].mode.name;
  28                         printf("No panel detected: default to %s\n", panel);
  29                         i = 0;
  30                 }
  31         } else {
  32                 for (i = 0; i < display_count; i++) {
  33                         if (!strcmp(panel, displays[i].mode.name))
  34                                 break;
  35                 }
  36         }
  37         if (i < display_count) {
  38                 ret = ipuv3_fb_init(&displays[i].mode, 0,
  39                                     displays[i].pixfmt);
  40                 if (!ret) {
  41                         displays[i].enable(displays+i);
  42                         printf("Display: %s (%ux%u)\n",
  43                                displays[i].mode.name,
  44                                displays[i].mode.xres,
  45                                displays[i].mode.yres);
  46                 } else
  47                         printf("LCD %s cannot be configured: %d\n",
  48                                displays[i].mode.name, ret);
  49         } else {
  50                 printf("unsupported panel %s\n", panel);
  51                 return -EINVAL;
  52         }
  53
  54         return 0;
  55 }
  56
  57 #ifdef CONFIG_IMX_HDMI
  58 #include <asm/arch/mxc_hdmi.h>
  59 #include <asm/io.h>
  60 int detect_hdmi(struct display_info_t const *dev)
  61 {
  62         struct hdmi_regs *hdmi  = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
  63         return readb(&hdmi->phy_stat0) & HDMI_DVI_STAT;
  64 }
  65 #endif