sunxi: video: Add simplefb support
Add simplefb support, note this depends on the kernel having support for
the clocks property which has recently been added to the simplefb devicetree
binding.
Signed-off-by: Luc Verhaegen <libv@skynet.be>
[hdegoede@redhat.com: Use pre-populated simplefb node under /chosen as
disussed on the devicetree list]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>.
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 63945e0..d241397 100644
--- 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 @@
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 */