[media] m5mols: Fix set_fmt to return proper pixel format code

In case pixel format is modified in set_fmt by the driver,
the changes are not propagated back to the caller. Fix this
by adjusting passed  data for TRY and ACTIVE format.

Also remove redundant pixel format code information from
struct m5mols_info, it's already available in 'ffmt' array.
Remove pad number validation in set/get_fmt, this is already
done in the core.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: HeungJun Kim <riverful.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/m5mols/m5mols.h

@@ -162,7 +162,6 @@ struct m5mols_version {
  * @pad: media pad
  * @ffmt: current fmt according to resolution type
  * @res_type: current resolution type
- * @code: current code
  * @irq_waitq: waitqueue for the capture
  * @work_irq: workqueue for the IRQ
  * @flags: state variable for the interrupt handler
@@ -192,7 +191,6 @@ struct m5mols_info {
 	struct media_pad pad;
 	struct v4l2_mbus_framefmt ffmt[M5MOLS_RESTYPE_MAX];
 	int res_type;
-	enum v4l2_mbus_pixelcode code;
 	wait_queue_head_t irq_waitq;
 	struct work_struct work_irq;
 	unsigned long flags;

drivers/media/video/m5mols/m5mols_core.c

@@ -510,9 +510,6 @@ static int m5mols_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
 	struct m5mols_info *info = to_m5mols(sd);
 	struct v4l2_mbus_framefmt *format;
 
-	if (fmt->pad != 0)
-		return -EINVAL;
-
 	format = __find_format(info, fh, fmt->which, info->res_type);
 	if (!format)
 		return -EINVAL;
@@ -531,9 +528,6 @@ static int m5mols_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
 	u32 resolution = 0;
 	int ret;
 
-	if (fmt->pad != 0)
-		return -EINVAL;
-
 	ret = __find_resolution(sd, format, &type, &resolution);
 	if (ret < 0)
 		return ret;
@@ -542,13 +536,14 @@ static int m5mols_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
 	if (!sfmt)
 		return 0;
 
-	*sfmt		= m5mols_default_ffmt[type];
-	sfmt->width	= format->width;
-	sfmt->height	= format->height;
+
+	format->code = m5mols_default_ffmt[type].code;
+	format->colorspace = V4L2_COLORSPACE_JPEG;
+	format->field = V4L2_FIELD_NONE;
 
 	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+		*sfmt = *format;
 		info->resolution = resolution;
-		info->code = format->code;
 		info->res_type = type;
 	}
 
@@ -625,13 +620,14 @@ static int m5mols_start_monitor(struct m5mols_info *info)
 static int m5mols_s_stream(struct v4l2_subdev *sd, int enable)
 {
 	struct m5mols_info *info = to_m5mols(sd);
+	u32 code = info->ffmt[info->res_type].code;
 
 	if (enable) {
 		int ret = -EINVAL;
 
-		if (is_code(info->code, M5MOLS_RESTYPE_MONITOR))
+		if (is_code(code, M5MOLS_RESTYPE_MONITOR))
 			ret = m5mols_start_monitor(info);
-		if (is_code(info->code, M5MOLS_RESTYPE_CAPTURE))
+		if (is_code(code, M5MOLS_RESTYPE_CAPTURE))
 			ret = m5mols_start_capture(info);
 
 		return ret;