[media] vivid: Add support for HSV encoding

Support HSV encoding. Most of the logic is replicated from ycbcr_enc.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

include/media/v4l2-tpg.h

@@ -130,6 +130,7 @@ struct tpg_data {
 	u32				colorspace;
 	u32				xfer_func;
 	u32				ycbcr_enc;
+	u32				hsv_enc;
 	/*
 	 * Stores the actual transfer function, i.e. will never be
 	 * V4L2_XFER_FUNC_DEFAULT.
@@ -139,6 +140,7 @@ struct tpg_data {
 	 * Stores the actual Y'CbCr encoding, i.e. will never be
 	 * V4L2_YCBCR_ENC_DEFAULT.
 	 */
+	u32				real_hsv_enc;
 	u32				real_ycbcr_enc;
 	u32				quantization;
 	/*
@@ -341,6 +343,19 @@ static inline u32 tpg_g_ycbcr_enc(const struct tpg_data *tpg)
 	return tpg->ycbcr_enc;
 }
 
+static inline void tpg_s_hsv_enc(struct tpg_data *tpg, u32 hsv_enc)
+{
+	if (tpg->hsv_enc == hsv_enc)
+		return;
+	tpg->hsv_enc = hsv_enc;
+	tpg->recalc_colors = true;
+}
+
+static inline u32 tpg_g_hsv_enc(const struct tpg_data *tpg)
+{
+	return tpg->hsv_enc;
+}
+
 static inline void tpg_s_xfer_func(struct tpg_data *tpg, u32 xfer_func)
 {
 	if (tpg->xfer_func == xfer_func)