LXR uboot/arch/arm/mach-imx/video.c

   1// SPDX-License-Identifier: GPL-2.0+
   2
   3#include <common.h>
   4#include <env.h>
   5#include <linux/errno.h>
   6#include <asm/mach-imx/video.h>
   7
   8#ifdef CONFIG_IMX_HDMI
   9#include <asm/arch/mxc_hdmi.h>
  10#include <asm/io.h>
  11
  12int detect_hdmi(struct display_info_t const *dev)
  13{
  14        struct hdmi_regs *hdmi  = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
  15        return readb(&hdmi->phy_stat0) & HDMI_DVI_STAT;
  16}
  17#endif
  18
  19int board_video_skip(void)
  20{
  21        int i;
  22        int ret = 0;
  23        char const *panel = env_get("panel");
  24
  25        if (!panel) {
  26                for (i = 0; i < display_count; i++) {
  27                        struct display_info_t const *dev = displays+i;
  28                        if (dev->detect && dev->detect(dev)) {
  29                                panel = dev->mode.name;
  30                                printf("auto-detected panel %s\n", panel);
  31                                break;
  32                        }
  33                }
  34                if (!panel) {
  35                        panel = displays[0].mode.name;
  36                        printf("No panel detected: default to %s\n", panel);
  37                        i = 0;
  38                }
  39        } else {
  40                for (i = 0; i < display_count; i++) {
  41                        if (!strcmp(panel, displays[i].mode.name))
  42                                break;
  43                }
  44        }
  45
  46        if (i < display_count) {
  47                ret = ipuv3_fb_init(&displays[i].mode, displays[i].di ? 1 : 0,
  48                                    displays[i].pixfmt);
  49                if (!ret) {
  50                        if (displays[i].enable)
  51                                displays[i].enable(displays + i);
  52
  53                        printf("Display: %s (%ux%u)\n",
  54                               displays[i].mode.name,
  55                               displays[i].mode.xres,
  56                               displays[i].mode.yres);
  57
  58#ifdef CONFIG_IMX_HDMI
  59                        if (!strcmp(displays[i].mode.name, "HDMI"))
  60                                imx_enable_hdmi_phy();
  61#endif
  62                } else
  63                        printf("LCD %s cannot be configured: %d\n",
  64                               displays[i].mode.name, ret);
  65        } else {
  66                printf("unsupported panel %s\n", panel);
  67                return -EINVAL;
  68        }
  69
  70        return ret;
  71}
  72
  73int ipu_displays_init(void)
  74{
  75        return board_video_skip();
  76}
  77