staging: media: tegra-video: move default format to soc-specific data

The tegra_default_format in vi.c is specific to Tegra210 CSI.

In preparation for adding Tegra20 VIP support, move the default format to a
new field in the soc-specific `struct tegra_vi_soc`. Instead of an entire
format struct, only store a pointer to an item in the existing format
array.

No functional changes. The format pointed to is the same that used to be in
vi.c.
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/staging/media/tegra-video/tegra210.c

@@ -766,8 +766,10 @@ const struct tegra_vi_soc tegra210_vi_soc = {
 	.hw_revision = 3,
 	.vi_max_channels = 6,
 #if IS_ENABLED(CONFIG_VIDEO_TEGRA_TPG)
+	.default_video_format = &tegra210_video_formats[0],
 	.vi_max_clk_hz = 499200000,
 #else
+	.default_video_format = &tegra210_video_formats[4],
 	.vi_max_clk_hz = 998400000,
 #endif
 };

drivers/staging/media/tegra-video/vi.c

@@ -45,15 +45,6 @@ struct tegra_vi_graph_entity {
 	struct v4l2_subdev *subdev;
 };
 
-static const struct tegra_video_format tegra_default_format = {
-	.img_dt = TEGRA_IMAGE_DT_RAW10,
-	.bit_width = 10,
-	.code = MEDIA_BUS_FMT_SRGGB10_1X10,
-	.bpp = 2,
-	.img_fmt = TEGRA_IMAGE_FORMAT_DEF,
-	.fourcc = V4L2_PIX_FMT_SRGGB10,
-};
-
 static inline struct tegra_vi *
 host1x_client_to_vi(struct host1x_client *client)
 {
@@ -1105,7 +1096,7 @@ static int vi_fmts_bitmap_init(struct tegra_vi_channel *chan)
 	 * there are no matched formats.
 	 */
 	if (!match_code) {
-		match_code = tegra_default_format.code;
+		match_code = chan->vi->soc->default_video_format->code;
 		index = tegra_get_format_idx_by_code(chan->vi, match_code, 0);
 		if (WARN_ON(index < 0))
 			return -EINVAL;
@@ -1202,7 +1193,7 @@ static int tegra_channel_init(struct tegra_vi_channel *chan)
 	init_waitqueue_head(&chan->done_wait);
 
 	/* initialize the video format */
-	chan->fmtinfo = &tegra_default_format;
+	chan->fmtinfo = chan->vi->soc->default_video_format;
 	chan->format.pixelformat = chan->fmtinfo->fourcc;
 	chan->format.colorspace = V4L2_COLORSPACE_SRGB;
 	chan->format.field = V4L2_FIELD_NONE;

drivers/staging/media/tegra-video/vi.h

@@ -58,6 +58,7 @@ struct tegra_vi_ops {
  *
  * @video_formats: supported video formats
  * @nformats: total video formats
+ * @default_video_format: default video format (pointer to a @video_formats item)
  * @ops: vi operations
  * @hw_revision: VI hw_revision
  * @vi_max_channels: supported max streaming channels
@@ -66,6 +67,7 @@ struct tegra_vi_ops {
 struct tegra_vi_soc {
 	const struct tegra_video_format *video_formats;
 	const unsigned int nformats;
+	const struct tegra_video_format *default_video_format;
 	const struct tegra_vi_ops *ops;
 	u32 hw_revision;
 	unsigned int vi_max_channels;