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
detect_hdmi(struct display_info_t const * dev)12 int 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
board_video_skip(void)19 int 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
ipu_displays_init(void)73 int ipu_displays_init(void)
74 {
75 return board_video_skip();
76 }
77