[media] vivid: add xfer_func support
Add support for the transfer function: create a new control for it,
and support it for both capture and output sides.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/platform/vivid/vivid-tpg.h b/drivers/media/platform/vivid/vivid-tpg.h
index ef8638f..9baed6a 100644
--- a/drivers/media/platform/vivid/vivid-tpg.h
+++ b/drivers/media/platform/vivid/vivid-tpg.h
@@ -122,8 +122,14 @@
u32 fourcc;
bool is_yuv;
u32 colorspace;
+ u32 xfer_func;
u32 ycbcr_enc;
/*
+ * Stores the actual transfer function, i.e. will never be
+ * V4L2_XFER_FUNC_DEFAULT.
+ */
+ u32 real_xfer_func;
+ /*
* Stores the actual Y'CbCr encoding, i.e. will never be
* V4L2_YCBCR_ENC_DEFAULT.
*/
@@ -329,6 +335,19 @@
return tpg->ycbcr_enc;
}
+static inline void tpg_s_xfer_func(struct tpg_data *tpg, u32 xfer_func)
+{
+ if (tpg->xfer_func == xfer_func)
+ return;
+ tpg->xfer_func = xfer_func;
+ tpg->recalc_colors = true;
+}
+
+static inline u32 tpg_g_xfer_func(const struct tpg_data *tpg)
+{
+ return tpg->xfer_func;
+}
+
static inline void tpg_s_quantization(struct tpg_data *tpg, u32 quantization)
{
if (tpg->quantization == quantization)