Re: [PATCH 1/2] drm: rcar-du: Add more formats to DRM_MODE_BLEND_PIXEL_NONE support

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Hi Laurent,


On 2023/08/14 6:46, Laurent Pinchart wrote:
On Fri, Aug 04, 2023 at 06:52:51PM +0300, Laurent Pinchart wrote:
On Fri, Aug 04, 2023 at 11:49:32AM -0400, Damian Hobson-Garcia wrote:
On 2023/08/03 20:06, Laurent Pinchart wrote:
On Fri, Aug 04, 2023 at 02:53:17AM +0300, Laurent Pinchart wrote:
On Fri, Aug 04, 2023 at 02:47:04AM +0300, Laurent Pinchart wrote:
On Fri, Jul 28, 2023 at 04:07:13PM -0400, Damian Hobson-Garcia wrote:
Add additional pixel formats for which blending is disabling when
Did you mean "disabled" instead of "disabling" ?
Oops.  Yes, that's exactly what I meant.
I'll fix this locally.


Thank you very much.



DRM_MODE_BLEND_PIXEL_NONE is set.

Refactor the fourcc selection into a separate function to handle the
increased number of formats.

Signed-off-by: Damian Hobson-Garcia <dhobsong@xxxxxxxxxx>
---
   drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c | 49 ++++++++++++-------
   1 file changed, 32 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c
index 45c05d0ffc70..96241c03b60f 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c
@@ -176,6 +176,37 @@ static const u32 rcar_du_vsp_formats_gen4[] = {
   	DRM_FORMAT_Y212,
   };
+static u32 rcar_du_vsp_state_get_format(struct rcar_du_vsp_plane_state *state)
+{
+	u32 fourcc = state->format->fourcc;
+
+	if (state->state.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE) {
+		switch (fourcc) {
+		case DRM_FORMAT_ARGB1555:
+			fourcc = DRM_FORMAT_XRGB1555;
+			break;
+
+		case DRM_FORMAT_ARGB4444:
+			fourcc = DRM_FORMAT_XRGB4444;
+			break;
+
+		case DRM_FORMAT_ARGB8888:
+			fourcc = DRM_FORMAT_XRGB8888;
+			break;
+
+		case DRM_FORMAT_BGRA8888:
+			fourcc = DRM_FORMAT_BGRX8888;
+			break;
+
+		case DRM_FORMAT_RGBA1010102:
+			fourcc = DRM_FORMAT_RGBX1010102;
+			break;
Should DRM_FORMAT_ARGB2101010 be added as well, or did you leave it out
intentionally ?
Yes, it was intentionally left out for the time being for the
reason that you noted (i.e. DRM_FORMAT_XRGB2101010 not
being handled by the DU driver).

It looks like DRM_FORMAT_ARGB2101010 will require a bit more work, as
DRM_FORMAT_XRGB2101010 is not handled by the DU driver at the moment.
Let's do so with a patch on top of this series.
Yes, I was thinking the same thing.

Replying to myself again, the datasheet doesn't explicitly list
DRM_FORMAT_XRGB2101010 as supported, but the generic mechanism to
specify the location of the components should work fine for that format.
Is this something you would be able to test ?
Unfortunately I don't have a Gen 4 system on hand to test the 2-10-10-10
formats with.
I will double-check with the office in Japan, but I don't think that
they have one either.
Tomi, is this something you could test ?
Replying to myself, this is something we could test, but let's not delay
this series, new formats can always be added on top.

Ok, great.  Thanks very much.


Damian

There's no need to send
a v2, I can handle the simple change in the commit message if you let me
know whether my comment is right or wrong.



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