[media] media: v4l2-ctrls: add control for test pattern

add V4L2_CID_TEST_PATTERN of type menu, which determines
the internal test pattern selected by the device.

Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml
index 272a5f71850934e23a3c6e7ca7b5d8cc60b9784c..a84a08ca51dcd155dde371ae818f2e75a4bcd0e8 100644 (file)
--- a/Documentation/DocBook/media/v4l/controls.xml
+++ b/Documentation/DocBook/media/v4l/controls.xml
@@ -4267,6 +4267,16 @@ interface and may change in the future.</para>
            pixels / second.
            </entry>
          </row>
+         <row>
+           <entry spanname="id"><constant>V4L2_CID_TEST_PATTERN</constant></entry>
+           <entry>menu</entry>
+         </row>
+         <row id="v4l2-test-pattern">
+           <entry spanname="descr"> Some capture/display/sensor devices have
+           the capability to generate test pattern images. These hardware
+           specific test patterns can be used to test if a device is working
+           properly.</entry>
+         </row>
          <row><entry></entry></row>
        </tbody>
       </tgroup>

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 631cdc0e0bdaab5524b0f9a6eff5bc8208791a2b..0bcef2b52cb1bdab74264825a6c218290bfff83e 100644 (file)
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -749,6 +749,7 @@ const char *v4l2_ctrl_get_name(u32 id)
        case V4L2_CID_IMAGE_PROC_CLASS:         return "Image Processing Controls";
        case V4L2_CID_LINK_FREQ:                return "Link Frequency";
        case V4L2_CID_PIXEL_RATE:               return "Pixel Rate";
+       case V4L2_CID_TEST_PATTERN:             return "Test Pattern";
 
        /* DV controls */
        case V4L2_CID_DV_CLASS:                 return "Digital Video Controls";
@@ -862,6 +863,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
        case V4L2_CID_DV_TX_MODE:
        case V4L2_CID_DV_TX_RGB_RANGE:
        case V4L2_CID_DV_RX_RGB_RANGE:
+       case V4L2_CID_TEST_PATTERN:
                *type = V4L2_CTRL_TYPE_MENU;
                break;
        case V4L2_CID_LINK_FREQ:

diff --git a/include/linux/v4l2-controls.h b/include/linux/v4l2-controls.h
index 421d24c7f686ad407129bdd20fd6c7245cf3bbe6..e1b36809c21b7117f033927b6f317ba33c8f47a8 100644 (file)
--- a/include/linux/v4l2-controls.h
+++ b/include/linux/v4l2-controls.h
@@ -757,5 +757,6 @@ enum v4l2_jpeg_chroma_subsampling {
 
 #define V4L2_CID_LINK_FREQ                     (V4L2_CID_IMAGE_PROC_CLASS_BASE + 1)
 #define V4L2_CID_PIXEL_RATE                    (V4L2_CID_IMAGE_PROC_CLASS_BASE + 2)
+#define V4L2_CID_TEST_PATTERN                  (V4L2_CID_IMAGE_PROC_CLASS_BASE + 3)
 
 #endif