Re: [PATCH v5 02/16] drm/vkms: Use drm_frame directly

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On 3/13/24 14:44, Louis Chauvet wrote:
From: Arthur Grillo <arthurgrillo@xxxxxxxxxx>

Remove intermidiary variables and access the variables directly from
drm_frame. These changes should be noop.

Signed-off-by: Arthur Grillo <arthurgrillo@xxxxxxxxxx>
Signed-off-by: Louis Chauvet <louis.chauvet@xxxxxxxxxxx>
---
  drivers/gpu/drm/vkms/vkms_drv.h       |  3 ---
  drivers/gpu/drm/vkms/vkms_formats.c   | 12 +++++++-----
  drivers/gpu/drm/vkms/vkms_plane.c     |  3 ---
  drivers/gpu/drm/vkms/vkms_writeback.c |  5 -----
  4 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index 8f5710debb1e..b4b357447292 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -31,9 +31,6 @@ struct vkms_frame_info {
  	struct drm_rect rotated;
  	struct iosys_map map[DRM_FORMAT_MAX_PLANES];
  	unsigned int rotation;
-	unsigned int offset;
-	unsigned int pitch;
-	unsigned int cpp;
  };
struct pixel_argb_u16 {
diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
index 36046b12f296..172830a3936a 100644
--- a/drivers/gpu/drm/vkms/vkms_formats.c
+++ b/drivers/gpu/drm/vkms/vkms_formats.c
@@ -11,8 +11,10 @@
static size_t pixel_offset(const struct vkms_frame_info *frame_info, int x, int y)
  {
-	return frame_info->offset + (y * frame_info->pitch)
-				  + (x * frame_info->cpp);
+	struct drm_framebuffer *fb = frame_info->fb;
+
+	return fb->offsets[0] + (y * fb->pitches[0])
+			      + (x * fb->format->cpp[0]);

Nitpicking: Could this be packed into a single line?

Anyway,

Reviewed-by: Maíra Canal <mcanal@xxxxxxxxxx>

Best Regards,
- Maíra

  }
/*
@@ -131,12 +133,12 @@ void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state
  	u8 *src_pixels = get_packed_src_addr(frame_info, y);
  	int limit = min_t(size_t, drm_rect_width(&frame_info->dst), stage_buffer->n_pixels);
- for (size_t x = 0; x < limit; x++, src_pixels += frame_info->cpp) {
+	for (size_t x = 0; x < limit; x++, src_pixels += frame_info->fb->format->cpp[0]) {
  		int x_pos = get_x_position(frame_info, limit, x);
if (drm_rotation_90_or_270(frame_info->rotation))
  			src_pixels = get_packed_src_addr(frame_info, x + frame_info->rotated.y1)
-				+ frame_info->cpp * y;
+				+ frame_info->fb->format->cpp[0] * y;
plane->pixel_read(src_pixels, &out_pixels[x_pos]);
  	}
@@ -223,7 +225,7 @@ void vkms_writeback_row(struct vkms_writeback_job *wb,
  	struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
  	int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), src_buffer->n_pixels);
- for (size_t x = 0; x < x_limit; x++, dst_pixels += frame_info->cpp)
+	for (size_t x = 0; x < x_limit; x++, dst_pixels += frame_info->fb->format->cpp[0])
  		wb->pixel_write(dst_pixels, &in_pixels[x]);
  }
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index 5a8d295e65f2..21b5adfb44aa 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -125,9 +125,6 @@ static void vkms_plane_atomic_update(struct drm_plane *plane,
  	drm_rect_rotate(&frame_info->rotated, drm_rect_width(&frame_info->rotated),
  			drm_rect_height(&frame_info->rotated), frame_info->rotation);
- frame_info->offset = fb->offsets[0];
-	frame_info->pitch = fb->pitches[0];
-	frame_info->cpp = fb->format->cpp[0];
  	vkms_plane_state->pixel_read = get_pixel_conversion_function(fmt);
  }
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
index bc724cbd5e3a..c8582df1f739 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -149,11 +149,6 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
  	crtc_state->active_writeback = active_wb;
  	crtc_state->wb_pending = true;
  	spin_unlock_irq(&output->composer_lock);
-
-	wb_frame_info->offset = fb->offsets[0];
-	wb_frame_info->pitch = fb->pitches[0];
-	wb_frame_info->cpp = fb->format->cpp[0];
-
  	drm_writeback_queue_job(wb_conn, connector_state);
  	active_wb->pixel_write = get_pixel_write_function(wb_format);
  	drm_rect_init(&wb_frame_info->src, 0, 0, crtc_width, crtc_height);




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