Re: [PATCH 03/18] drm/i915: Add atomic get property interface for CRTC

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On Thu, Aug 06, 2015 at 10:08:12PM +0530, Shashank Sharma wrote:
> From: Kausal Malladi <kausalmalladi@xxxxxxxxx>
> 
> This patch adds atomic get property interface for Intel CRTC. This
> interface will be used for get operation on any non-core DRM properties.
> 
> Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxxxx>
> Signed-off-by: Kausal Malladi <kausalmalladi@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_atomic.c  | 8 ++++++++
>  drivers/gpu/drm/i915/intel_display.c | 1 +
>  drivers/gpu/drm/i915/intel_drv.h     | 4 ++++
>  3 files changed, 13 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
> index 922fecf..8d04ee8 100644
> --- a/drivers/gpu/drm/i915/intel_atomic.c
> +++ b/drivers/gpu/drm/i915/intel_atomic.c
> @@ -327,3 +327,11 @@ int intel_crtc_atomic_set_property(struct drm_crtc *crtc,
>  	DRM_DEBUG_KMS("Unknown crtc property '%s'\n", property->name);
>  	return -EINVAL;
>  }
> +
> +int intel_crtc_atomic_get_property(struct drm_crtc *crtc,
> +				   const struct drm_crtc_state *state,
> +				   struct drm_property *property,
> +				   uint64_t *val)
> +{
> +	return 0;

I think this should be -EINVAL since it's an unrecognized property.
Probably add a DRM_DEBUG_KMS() message here like we have in
intel_plane_atomic_get_property() as well.


Matt

> +}
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 1fbf0ff..1412e21 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -13353,6 +13353,7 @@ static const struct drm_crtc_funcs intel_crtc_funcs = {
>  	.page_flip = intel_crtc_page_flip,
>  	.set_property = drm_atomic_helper_crtc_set_property,
>  	.atomic_set_property = intel_crtc_atomic_set_property,
> +	.atomic_get_property = intel_crtc_atomic_get_property,
>  	.atomic_duplicate_state = intel_crtc_duplicate_state,
>  	.atomic_destroy_state = intel_crtc_destroy_state,
>  };
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index c0ae529..b3dc138 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1426,6 +1426,10 @@ int intel_crtc_atomic_set_property(struct drm_crtc *plane,
>  				   struct drm_crtc_state *state,
>  				   struct drm_property *property,
>  				   uint64_t val);
> +int intel_crtc_atomic_get_property(struct drm_crtc *plane,
> +				   const struct drm_crtc_state *state,
> +				   struct drm_property *property,
> +				   uint64_t *val);
>  
>  /* intel_atomic_plane.c */
>  struct intel_plane_state *intel_create_plane_state(struct drm_plane *plane);
> -- 
> 1.9.1
> 

-- 
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
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