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* [PATCH xf86-video-amdgpu] Do not push the CM_GAMMA_LUT property values in drmmode_crtc_cm_init
@ 2018-08-31 10:45 Michel Dänzer
       [not found] ` <20180831104501.6920-1-michel-otUistvHUpPR7s880joybQ@public.gmane.org>
  0 siblings, 1 reply; 2+ messages in thread
From: Michel Dänzer @ 2018-08-31 10:45 UTC (permalink / raw)
  To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW

From: Michel Dänzer <michel.daenzer@amd.com>

The crtc->gamma_lut values aren't initialized yet at this point, and
the property values are pushed again from drmmode_setup_colormap
anyway.

Fixes intermittent flicker due to random gamma LUT values during server
startup.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
---
 src/drmmode_display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index 46be29d07..6ef6a98e2 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -1863,7 +1863,7 @@ static void drmmode_crtc_cm_init(int drm_fd, xf86CrtcPtr crtc)
 		drmmode_crtc->ctm->matrix[8] = (uint64_t)1 << 32;
 
 	/* Push properties to reset properties currently in hardware */
-	for (i = 0; i < CM_DEGAMMA_LUT_SIZE; i++) {
+	for (i = 0; i < CM_GAMMA_LUT; i++) {
 		if (drmmode_crtc_push_cm_prop(crtc, i))
 			xf86DrvMsg(crtc->scrn->scrnIndex, X_ERROR,
 				   "Failed to initialize color management "
-- 
2.18.0

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

^ permalink raw reply related	[flat|nested] 2+ messages in thread

* Re: [PATCH xf86-video-amdgpu] Do not push the CM_GAMMA_LUT property values in drmmode_crtc_cm_init
       [not found] ` <20180831104501.6920-1-michel-otUistvHUpPR7s880joybQ@public.gmane.org>
@ 2018-09-02 15:01   ` Alex Deucher
  0 siblings, 0 replies; 2+ messages in thread
From: Alex Deucher @ 2018-09-02 15:01 UTC (permalink / raw)
  To: Michel Dänzer; +Cc: amd-gfx list

On Fri, Aug 31, 2018 at 6:45 AM Michel Dänzer <michel@daenzer.net> wrote:
>
> From: Michel Dänzer <michel.daenzer@amd.com>
>
> The crtc->gamma_lut values aren't initialized yet at this point, and
> the property values are pushed again from drmmode_setup_colormap
> anyway.
>
> Fixes intermittent flicker due to random gamma LUT values during server
> startup.
>
> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>

Acked-by: Alex Deucher <alexander.deucher@amd.com>

> ---
>  src/drmmode_display.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/src/drmmode_display.c b/src/drmmode_display.c
> index 46be29d07..6ef6a98e2 100644
> --- a/src/drmmode_display.c
> +++ b/src/drmmode_display.c
> @@ -1863,7 +1863,7 @@ static void drmmode_crtc_cm_init(int drm_fd, xf86CrtcPtr crtc)
>                 drmmode_crtc->ctm->matrix[8] = (uint64_t)1 << 32;
>
>         /* Push properties to reset properties currently in hardware */
> -       for (i = 0; i < CM_DEGAMMA_LUT_SIZE; i++) {
> +       for (i = 0; i < CM_GAMMA_LUT; i++) {
>                 if (drmmode_crtc_push_cm_prop(crtc, i))
>                         xf86DrvMsg(crtc->scrn->scrnIndex, X_ERROR,
>                                    "Failed to initialize color management "
> --
> 2.18.0
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2018-09-02 15:01 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-08-31 10:45 [PATCH xf86-video-amdgpu] Do not push the CM_GAMMA_LUT property values in drmmode_crtc_cm_init Michel Dänzer
     [not found] ` <20180831104501.6920-1-michel-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-09-02 15:01   ` Alex Deucher

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