linux-kernel - Re: [PATCH v2 7/9] drm/vkms: Add range and encoding properties to pixel

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Date: Mon, 26 Feb 2024 14:23:43 +0200
From: Pekka Paalanen <pekka.paalanen@...labora.com>
To: Louis Chauvet <louis.chauvet@...tlin.com>
Cc: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>, Melissa Wen
 <melissa.srw@...il.com>, Maíra Canal
 <mairacanal@...eup.net>, Haneen Mohammed <hamohammed.sa@...il.com>, Daniel
 Vetter <daniel@...ll.ch>, Maarten Lankhorst
 <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 arthurgrillo@...eup.net, Jonathan Corbet <corbet@....net>,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 jeremie.dautheribes@...tlin.com, miquel.raynal@...tlin.com,
 thomas.petazzoni@...tlin.com
Subject: Re: [PATCH v2 7/9] drm/vkms: Add range and encoding properties to
 pixel_read function

On Fri, 23 Feb 2024 12:37:27 +0100
Louis Chauvet <louis.chauvet@...tlin.com> wrote:

> From: Arthur Grillo <arthurgrillo@...eup.net>
> 
> Create range and encoding properties. This should be noop, as none of
> the conversion functions need those properties.

None of the conversion function needs this? How can one say so?
The previous patch is making use of them already, AFAICT?

How is this a noop? Is it not exposing new UAPI from VKMS?


Thanks,
pq

> 
> Signed-off-by: Arthur Grillo <arthurgrillo@...eup.net>
> [Louis Chauvet: retained only relevant parts]
> Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
> ---
>  drivers/gpu/drm/vkms/vkms_plane.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
> index 427ca67c60ce..95dfde297377 100644
> --- a/drivers/gpu/drm/vkms/vkms_plane.c
> +++ b/drivers/gpu/drm/vkms/vkms_plane.c
> @@ -228,5 +228,14 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
>  	drm_plane_create_rotation_property(&plane->base, DRM_MODE_ROTATE_0,
>  					   DRM_MODE_ROTATE_MASK | DRM_MODE_REFLECT_MASK);
>  
> +	drm_plane_create_color_properties(&plane->base,
> +					  BIT(DRM_COLOR_YCBCR_BT601) |
> +					  BIT(DRM_COLOR_YCBCR_BT709) |
> +					  BIT(DRM_COLOR_YCBCR_BT2020),
> +					  BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
> +					  BIT(DRM_COLOR_YCBCR_FULL_RANGE),
> +					  DRM_COLOR_YCBCR_BT601,
> +					  DRM_COLOR_YCBCR_FULL_RANGE);
> +
>  	return plane;
>  }
> 


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