[media] uvcvideo: Support 10bit, 12bit and alternate 8bit greyscale formats

The SPCAM SP620U camera uses the alternate "Y8  " GUID for the 8-bit
greyscale format, and supports a 12-bit greyscale format. Add support
for those in the driver, as well as for 10-bit greyscale formats.

Signed-off-by: Stefan Muenzel <stefanmuenzel@googlemail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 26 insertions, 2 deletions

diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c
index 1d131720b6d7..11db2621660a 100644
--- a/drivers/media/video/uvc/uvc_driver.c
+++ b/drivers/media/video/uvc/uvc_driver.c
@@ -95,12 +95,27 @@ static struct uvc_format_desc uvc_fmts[] = {
                 .fcc            = V4L2_PIX_FMT_UYVY,
         },
         {
-                .name           = "Greyscale (8-bit)",
+                .name           = "Greyscale 8-bit (Y800)",
                 .guid           = UVC_GUID_FORMAT_Y800,
                 .fcc            = V4L2_PIX_FMT_GREY,
         },
         {
-                .name           = "Greyscale (16-bit)",
+                .name           = "Greyscale 8-bit (Y8  )",
+                .guid           = UVC_GUID_FORMAT_Y8,
+                .fcc            = V4L2_PIX_FMT_GREY,
+        },
+        {
+                .name           = "Greyscale 10-bit (Y10 )",
+                .guid           = UVC_GUID_FORMAT_Y10,
+                .fcc            = V4L2_PIX_FMT_Y10,
+        },
+        {
+                .name           = "Greyscale 12-bit (Y12 )",
+                .guid           = UVC_GUID_FORMAT_Y12,
+                .fcc            = V4L2_PIX_FMT_Y12,
+        },
+        {
+                .name           = "Greyscale 16-bit (Y16 )",
                 .guid           = UVC_GUID_FORMAT_Y16,
                 .fcc            = V4L2_PIX_FMT_Y16,
         },
diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h
index 7c3d082505b7..3764040475bb 100644
--- a/drivers/media/video/uvc/uvcvideo.h
+++ b/drivers/media/video/uvc/uvcvideo.h
@@ -79,6 +79,15 @@
 #define UVC_GUID_FORMAT_Y800 \
         { 'Y',  '8',  '0',  '0', 0x00, 0x00, 0x10, 0x00, \
          0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_Y8 \
+        { 'Y',  '8',  ' ',  ' ', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_Y10 \
+        { 'Y',  '1',  '0',  ' ', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_Y12 \
+        { 'Y',  '1',  '2',  ' ', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
 #define UVC_GUID_FORMAT_Y16 \
         { 'Y',  '1',  '6',  ' ', 0x00, 0x00, 0x10, 0x00, \
          0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}