V4L/DVB (4861): Remove the need of a STD array for drivers using video_ioctl2

video_ioctl2 will auto-generate standard entries at ENUM_FMT.
Also, now, a driver may return a subset of the video array at
the return, to be stored as the current_norm.
For example, a driver may ask for V4L2_STD_PAL. At return,
driver may change it to V4L2_STD_PAL_B. This way, a futher call
to G_STD will return the exact detected video std.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index b0b4abe5c29..752c82c37f5 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -87,6 +87,78 @@ MODULE_LICENSE("GPL");
  */
 
 
+char *v4l2_norm_to_name(v4l2_std_id id)
+{
+        char *name;
+
+        switch (id) {
+        case V4L2_STD_PAL:
+                name="PAL";             break;
+        case V4L2_STD_PAL_BG:
+                name="PAL-BG";          break;
+        case V4L2_STD_PAL_DK:
+                name="PAL-DK";          break;
+        case V4L2_STD_PAL_B:
+                name="PAL-B";           break;
+        case V4L2_STD_PAL_B1:
+                name="PAL-B1";          break;
+        case V4L2_STD_PAL_G:
+                name="PAL-G";           break;
+        case V4L2_STD_PAL_H:
+                name="PAL-H";           break;
+        case V4L2_STD_PAL_I:
+                name="PAL-I";           break;
+        case V4L2_STD_PAL_D:
+                name="PAL-D";           break;
+        case V4L2_STD_PAL_D1:
+                name="PAL-D1";          break;
+        case V4L2_STD_PAL_K:
+                name="PAL-K";           break;
+        case V4L2_STD_PAL_M:
+                name="PAL-M";           break;
+        case V4L2_STD_PAL_N:
+                name="PAL-N";           break;
+        case V4L2_STD_PAL_Nc:
+                name="PAL-Nc";          break;
+        case V4L2_STD_PAL_60:
+                name="PAL-60";          break;
+        case V4L2_STD_NTSC:
+                name="NTSC";            break;
+        case V4L2_STD_NTSC_M:
+                name="NTSC-M";          break;
+        case V4L2_STD_NTSC_M_JP:
+                name="NTSC-M-JP";       break;
+        case V4L2_STD_NTSC_443:
+                name="NTSC-443";        break;
+        case V4L2_STD_NTSC_M_KR:
+                name="NTSC-M-KR";       break;
+        case V4L2_STD_SECAM:
+                name="SECAM";           break;
+        case V4L2_STD_SECAM_DK:
+                name="SECAM-DK";        break;
+        case V4L2_STD_SECAM_B:
+                name="SECAM-B";         break;
+        case V4L2_STD_SECAM_D:
+                name="SECAM-D";         break;
+        case V4L2_STD_SECAM_G:
+                name="SECAM-G";         break;
+        case V4L2_STD_SECAM_H:
+                name="SECAM-H";         break;
+        case V4L2_STD_SECAM_K:
+                name="SECAM-K";         break;
+        case V4L2_STD_SECAM_K1:
+                name="SECAM-K1";        break;
+        case V4L2_STD_SECAM_L:
+                name="SECAM-L";         break;
+        case V4L2_STD_SECAM_LC:
+                name="SECAM-LC";        break;
+        default:
+                name="Unknown";         break;
+        }
+
+        return name;
+}
+
 /* Fill in the fields of a v4l2_standard structure according to the
    'id' and 'transmission' parameters.  Returns negative on error.  */
 int v4l2_video_std_construct(struct v4l2_standard *vs,
@@ -1453,6 +1525,7 @@ u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
 
 /* ----------------------------------------------------------------- */
 
+EXPORT_SYMBOL(v4l2_norm_to_name);
 EXPORT_SYMBOL(v4l2_video_std_construct);
 
 EXPORT_SYMBOL(v4l2_prio_init);