Re: [PATCH 2/3] drm/panic: Add a set_pixel() callback to drm_scanout_buffer

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On 31/05/2024 11:20, Javier Martinez Canillas wrote:
Jocelyn Falempe <jfalempe@xxxxxxxxxx> writes:

This allows drivers to draw the pixel, and handle tiling, or specific
color formats.

Signed-off-by: Jocelyn Falempe <jfalempe@xxxxxxxxxx>
---
  drivers/gpu/drm/drm_panic.c | 120 +++++++++++++++++++++++-------------
  include/drm/drm_panic.h     |   9 +++
  2 files changed, 85 insertions(+), 44 deletions(-)

diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c
index 9d95c7eaae83..27e26b9d842c 100644
--- a/drivers/gpu/drm/drm_panic.c
+++ b/drivers/gpu/drm/drm_panic.c
@@ -241,40 +241,54 @@ static void drm_panic_blit32(struct iosys_map *dmap, unsigned int dpitch,
  				iosys_map_wr(dmap, y * dpitch + x * sizeof(u32), u32, color);
  }
+static void drm_panic_blit_pixel(struct drm_scanout_buffer *sb, struct drm_rect *clip,
+				 const u8 *sbuf8, unsigned int spitch, u32 color)
+{
+	unsigned int y, x;
+
+	for (y = 0; y < drm_rect_height(clip); y++)
+		for (x = 0; x < drm_rect_width(clip); x++)
+			if (sbuf8[(y * spitch) + x / 8] & (0x80 >> (x % 8)))

You have the same check for fb vs bg in all your blit helpers, so maybe
this can be a macro or static inline function instead ? That would also
help with the issue I mentioned about making the logic easier to read.

Sure, I can do a v2, or send an additional patch for that.

Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>


Thanks,

--

Jocelyn




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