dts: Bring in Chrome OS keyboard device tree definition

[oweals/u-boot.git] / drivers / video / sunxi_display.c

diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 63945e082cfa507e08657d5fdc89a8c908d3edf7..d2413971c07b5a3881ff96fbe9e0939b7a2e57ca 100644 (file)
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -13,6 +13,8 @@
 #include <asm/arch/display.h>
 #include <asm/global_data.h>
 #include <asm/io.h>
+#include <fdtdec.h>
+#include <fdt_support.h>
 #include <linux/fb.h>
 #include <video_fb.h>
 
@@ -408,3 +410,42 @@ void *video_hw_init(void)
 
        return graphic_device;
 }
+
+/*
+ * Simplefb support.
+ */
+#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_VIDEO_DT_SIMPLEFB)
+int sunxi_simplefb_setup(void *blob)
+{
+       static GraphicDevice *graphic_device = &sunxi_display.graphic_device;
+       int offset, ret;
+
+       if (!sunxi_display.enabled)
+               return 0;
+
+       /* Find a framebuffer node, with pipeline == "de_be0-lcd0-hdmi" */
+       offset = fdt_node_offset_by_compatible(blob, -1,
+                                              "allwinner,simple-framebuffer");
+       while (offset >= 0) {
+               ret = fdt_find_string(blob, offset, "allwinner,pipeline",
+                                     "de_be0-lcd0-hdmi");
+               if (ret == 0)
+                       break;
+               offset = fdt_node_offset_by_compatible(blob, offset,
+                                              "allwinner,simple-framebuffer");
+       }
+       if (offset < 0) {
+               eprintf("Cannot setup simplefb: node not found\n");
+               return 0; /* Keep older kernels working */
+       }
+
+       ret = fdt_setup_simplefb_node(blob, offset, gd->fb_base,
+                       graphic_device->winSizeX, graphic_device->winSizeY,
+                       graphic_device->winSizeX * graphic_device->gdfBytesPP,
+                       "x8r8g8b8");
+       if (ret)
+               eprintf("Cannot setup simplefb: Error setting properties\n");
+
+       return ret;
+}
+#endif /* CONFIG_OF_BOARD_SETUP && CONFIG_VIDEO_DT_SIMPLEFB */