fbdev: sh_mobile_lcdc: Implement overlays support

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-devices-platform-sh_mobile_lcdc_fb b/Documentation/ABI/testing/sysfs-devices-platform-sh_mobile_lcdc_fb
new file mode 100644
index 000000000000..2107082426da
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-platform-sh_mobile_lcdc_fb
@@ -0,0 +1,44 @@
+What:           /sys/devices/platform/sh_mobile_lcdc_fb.[0-3]/graphics/fb[0-9]/ovl_alpha
+Date:           May 2012
+Contact:        Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Description:
+                This file is only available on fb[0-9] devices corresponding
+                to overlay planes.
+
+                Stores the alpha blending value for the overlay. Values range
+                from 0 (transparent) to 255 (opaque). The value is ignored if
+                the mode is not set to Alpha Blending.
+
+What:           /sys/devices/platform/sh_mobile_lcdc_fb.[0-3]/graphics/fb[0-9]/ovl_mode
+Date:           May 2012
+Contact:        Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Description:
+                This file is only available on fb[0-9] devices corresponding
+                to overlay planes.
+
+                Selects the composition mode for the overlay. Possible values
+                are
+
+                0 - Alpha Blending
+                1 - ROP3
+
+What:           /sys/devices/platform/sh_mobile_lcdc_fb.[0-3]/graphics/fb[0-9]/ovl_position
+Date:           May 2012
+Contact:        Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Description:
+                This file is only available on fb[0-9] devices corresponding
+                to overlay planes.
+
+                Stores the x,y overlay position on the display in pixels. The
+                position format is `[0-9]+,[0-9]+'.
+
+What:           /sys/devices/platform/sh_mobile_lcdc_fb.[0-3]/graphics/fb[0-9]/ovl_rop3
+Date:           May 2012
+Contact:        Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Description:
+                This file is only available on fb[0-9] devices corresponding
+                to overlay planes.
+
+                Stores the raster operation (ROP3) for the overlay. Values
+                range from 0 to 255. The value is ignored if the mode is not
+                set to ROP3.