[PATCH 12/23] drm/amd/display: Add custom segmentation support

[Alex Hung]

From: Brendan Steve Leder <BrendanSteve.Leder at amd.com>

[WHY]
Add support for uneven segmentation size

[HOW]
Currently width + x_start is automatically calculated using
slice index + dividing stream into equally sized segments.
Add override variables for dst_rect width and x

Reviewed-by: Samson Tam <samson.tam at amd.com>
Signed-off-by: Brendan Steve Leder <BrendanSteve.Leder at amd.com>
Signed-off-by: Alex Hung <alex.hung at amd.com>
---
 drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c    | 17 +++++++++++------
 .../gpu/drm/amd/display/dc/sspl/dc_spl_types.h  |  2 ++
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c b/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c
index d5f3bcb68d53..55b929ca7982 100644
--- a/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c
+++ b/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c
@@ -196,7 +196,12 @@ static struct spl_rect calculate_mpc_slice_in_timing_active(
 	int epimo = mpc_slice_count - plane_clip_rec->width % mpc_slice_count - 1;
 	struct spl_rect mpc_rec;
 
-	if (use_recout_width_aligned) {
+	if (spl_in->basic_in.custom_width != 0) {
+		mpc_rec.width = spl_in->basic_in.custom_width;
+		mpc_rec.x = spl_in->basic_in.custom_x;
+		mpc_rec.height = plane_clip_rec->height;
+		mpc_rec.y = plane_clip_rec->y;
+	} else if (use_recout_width_aligned) {
 		mpc_rec.width = recout_width_align;
 		if ((mpc_rec.width * (mpc_slice_idx + 1)) > plane_clip_rec->width) {
 			mpc_rec.width = plane_clip_rec->width % recout_width_align;
@@ -219,7 +224,7 @@ static struct spl_rect calculate_mpc_slice_in_timing_active(
 	/* extra pixels in the division remainder need to go to pipes after
 	 * the extra pixel index minus one(epimo) defined here as:
 	 */
-	if (mpc_slice_idx > epimo) {
+	if (mpc_slice_idx > epimo && spl_in->basic_in.custom_width == 0) {
 		mpc_rec.x += mpc_slice_idx - epimo - 1;
 		mpc_rec.width += 1;
 	}
@@ -252,10 +257,10 @@ static struct spl_rect calculate_odm_slice_in_timing_active(struct spl_in *spl_i
 
 		odm_rec.x = odm_slice_width * odm_slice_idx;
 		odm_rec.width = is_last_odm_slice ?
-				/* last slice width is the reminder of h_active */
-				h_active - odm_slice_width * (odm_slice_count - 1) :
-				/* odm slice width is the floor of h_active / count */
-				odm_slice_width;
+			/* last slice width is the reminder of h_active */
+			h_active - odm_slice_width * (odm_slice_count - 1) :
+			/* odm slice width is the floor of h_active / count */
+			odm_slice_width;
 		odm_rec.y = 0;
 		odm_rec.height = v_active;
 
diff --git a/drivers/gpu/drm/amd/display/dc/sspl/dc_spl_types.h b/drivers/gpu/drm/amd/display/dc/sspl/dc_spl_types.h
index 36a284305a70..23d254dea18f 100644
--- a/drivers/gpu/drm/amd/display/dc/sspl/dc_spl_types.h
+++ b/drivers/gpu/drm/amd/display/dc/sspl/dc_spl_types.h
@@ -460,6 +460,8 @@ struct basic_in	{
 	enum spl_color_space color_space;	//	Color Space
 	unsigned int max_luminance;	//	Max Luminance TODO: Is determined in dc_hw_sequencer.c is_sdr
 	bool film_grain_applied;	//	Film Grain Applied // TODO: To check from where to get this?
+	int custom_width; // Width for non-standard segmentation - used when != 0
+	int custom_x;     // Start x for non-standard segmentation - used when custom_width != 0
 };
 
 // Basic output information
-- 
2.43.0