[PATCH] drm: atomic: fix legacy gamma set helper

[Bob Paauwe]

On Mon, 11 Apr 2016 14:43:39 +0100
Lionel Landwerlin <lionel.g.landwerlin at intel.com> wrote:

> Color management properties are a bit of an odd use case because
> they're not marked as atomic properties. Currently we're not updating
> the non atomic values so the drm_crtc_state is out of sync with the
> values stored in the crtc object.
> 
> v2: Update non atomic values only if commit succeeds (Bob Paauwe)
> 
> v3: Do not access crtc_state after commit, use crtc->state (Maarten
>     Lankhorst)
> 

Reviewed-by: Bob Paauwe <bob.j.paauwe at intel.com>
Tested-by; Bob Paauwe <bob.j.paauwe at intel.com>

> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Bob Paauwe <bob.j.paauwe at intel.com>
> Cc: <dri-devel at lists.freedesktop.org>
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
> ---
>  drivers/gpu/drm/drm_atomic_helper.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 7bf678e..13b86cf 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -2979,6 +2979,14 @@ retry:
>  	if (ret)
>  		goto fail;
>  
> +	drm_object_property_set_value(&crtc->base,
> +			config->degamma_lut_property, 0);
> +	drm_object_property_set_value(&crtc->base,
> +			config->ctm_property, 0);
> +	drm_object_property_set_value(&crtc->base,
> +			config->gamma_lut_property,
> +			crtc->state->gamma_lut->base.id);
> +
>  	/* Driver takes ownership of state on successful commit. */
>  
>  	drm_property_unreference_blob(blob);



-- 
--
Bob Paauwe                  
Bob.J.Paauwe at intel.com
IOTG / PED Software Organization
Intel Corp.  Folsom, CA
(916) 356-6193