imx-common: add board_video_skip

this function is shared by several boards and thus can be factorized

Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Stefano Babic <sbabic@denx.de>

diff --git a/arch/arm/imx-common/Makefile b/arch/arm/imx-common/Makefile
index b04dfbbcb9594153440ed090cc8f5d469f7a8b19..0e713952dc4366476e5b555908fce9ce24388ae1 100644 (file)
--- a/arch/arm/imx-common/Makefile
+++ b/arch/arm/imx-common/Makefile
@@ -19,6 +19,7 @@ obj-y += misc.o
 endif
 ifeq ($(SOC),$(filter $(SOC),mx6))
 obj-$(CONFIG_CMD_SATA) += sata.o
+obj-$(CONFIG_IMX_VIDEO_SKIP) += video.o
 endif
 obj-$(CONFIG_CMD_BMODE) += cmd_bmode.o
 obj-$(CONFIG_CMD_HDMIDETECT) += cmd_hdmidet.o

diff --git a/arch/arm/imx-common/video.c b/arch/arm/imx-common/video.c
new file mode 100644 (file)
index 0000000..098239a
--- /dev/null
+++ b/arch/arm/imx-common/video.c
@@ -0,0 +1,55 @@
+/*
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <asm/imx-common/video.h>
+
+extern struct display_info_t const displays[];
+extern size_t display_count;
+
+int board_video_skip(void)
+{
+       int i;
+       int ret;
+       char const *panel = getenv("panel");
+       if (!panel) {
+               for (i = 0; i < display_count; i++) {
+                       struct display_info_t const *dev = displays+i;
+                       if (dev->detect && dev->detect(dev)) {
+                               panel = dev->mode.name;
+                               printf("auto-detected panel %s\n", panel);
+                               break;
+                       }
+               }
+               if (!panel) {
+                       panel = displays[0].mode.name;
+                       printf("No panel detected: default to %s\n", panel);
+                       i = 0;
+               }
+       } else {
+               for (i = 0; i < display_count; i++) {
+                       if (!strcmp(panel, displays[i].mode.name))
+                               break;
+               }
+       }
+       if (i < display_count) {
+               ret = ipuv3_fb_init(&displays[i].mode, 0,
+                                   displays[i].pixfmt);
+               if (!ret) {
+                       displays[i].enable(displays+i);
+                       printf("Display: %s (%ux%u)\n",
+                              displays[i].mode.name,
+                              displays[i].mode.xres,
+                              displays[i].mode.yres);
+               } else
+                       printf("LCD %s cannot be configured: %d\n",
+                              displays[i].mode.name, ret);
+       } else {
+               printf("unsupported panel %s\n", panel);
+               return -EINVAL;
+       }
+
+       return 0;
+}

diff --git a/arch/arm/include/asm/imx-common/video.h b/arch/arm/include/asm/imx-common/video.h
new file mode 100644 (file)
index 0000000..e0c4ef4
--- /dev/null
+++ b/arch/arm/include/asm/imx-common/video.h
@@ -0,0 +1,20 @@
+/*
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef __IMX_VIDEO_H_
+#define __IMX_VIDEO_H_
+
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+
+struct display_info_t {
+       int     bus;
+       int     addr;
+       int     pixfmt;
+       int     (*detect)(struct display_info_t const *dev);
+       void    (*enable)(struct display_info_t const *dev);
+       struct  fb_videomode mode;
+};
+
+#endif