Hi
Am 18.10.21 um 19:41 schrieb Igor Matheus Andrade Torrente:
Hello,
On 10/18/21 7:14 AM, Thomas Zimmermann wrote:
Hi
Am 05.10.21 um 22:16 schrieb Igor Matheus Andrade Torrente:
Currently, the vkms atomic check only goes through the first position of the `vkms_wb_formats` vector.
This change prepares the atomic_check to check the entire vector.
Signed-off-by: Igor Matheus Andrade Torrente igormtorrente@gmail.com
drivers/gpu/drm/vkms/vkms_writeback.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c index 5a3e12f105dc..56978f499203 100644 --- a/drivers/gpu/drm/vkms/vkms_writeback.c +++ b/drivers/gpu/drm/vkms/vkms_writeback.c @@ -30,6 +30,8 @@ static int vkms_wb_encoder_atomic_check(struct drm_encoder *encoder, { struct drm_framebuffer *fb; const struct drm_display_mode *mode = &crtc_state->mode; + bool format_supported = false; + int i; if (!conn_state->writeback_job || !conn_state->writeback_job->fb) return 0; @@ -41,7 +43,14 @@ static int vkms_wb_encoder_atomic_check(struct drm_encoder *encoder, return -EINVAL; } - if (fb->format->format != vkms_wb_formats[0]) { + for (i = 0; i < ARRAY_SIZE(vkms_wb_formats); i++) { + if (fb->format->format == vkms_wb_formats[i]) { + format_supported = true; + break; + } + }
At a minimum, this loop should be in a helper function. But more generally, I'm surprised that this isn't already covered by the DRM's atomic helpers.
Ok, I can wrap it in a new function.
AFAIK the DRM doesn't cover it. But I may be wrong...
I couldn't find anything either.
Other drivers do similar format and frambuffer checks. So I guess a helper could be implemented. All plane's are supposed to call drm_atomic_helper_check_plane_state() in their atomic_check() code. You could add a similar helper, say drm_atomic_helper_check_writeback_encoder_state(), that tests for the format and maybe other things as well.
Best regards Thomas
Best regards Thomas
+ if (!format_supported) { DRM_DEBUG_KMS("Invalid pixel format %p4cc\n", &fb->format->format); return -EINVAL;