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