linux-kernel - Re: [PATCH 1/3] drm/doc: Add description of drm properties in msm

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Date:	Wed, 24 Jun 2015 13:30:18 -0400
From:	Rob Clark <robdclark@...il.com>
To:	Jilai Wang <jilaiw@...eaurora.org>
Cc:	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] drm/doc: Add description of drm properties in msm

On Fri, Jun 19, 2015 at 11:36 AM, Jilai Wang <jilaiw@...eaurora.org> wrote:
> Add plane properties "premultiplied/zpos/alpha" used in msm MDP
> driver to perform proper blending operation.
>
> Signed-off-by: Jilai Wang <jilaiw@...eaurora.org>
> ---
>  Documentation/DocBook/drm.tmpl | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
>
> diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
> index 109fde8..9dc0940 100644
> --- a/Documentation/DocBook/drm.tmpl
> +++ b/Documentation/DocBook/drm.tmpl
> @@ -3500,6 +3500,29 @@ void intel_crt_init(struct drm_device *dev)
>         <td valign="top" >Plane</td>
>         <td valign="top" >TBD</td>
>         </tr>
> +       <tr>
> +       <td rowspan="3" valign="top" >msm</td>
> +       <td rowspan="3" valign="top" >Generic</td>
> +       <td valign="top" >"premultiplied"</td>
> +       <td valign="top" >RANGE</td>

probably an ENUM property for this?

> +       <td valign="top" >Min=0, Max=1</td>
> +       <td valign="top" >Plane</td>
> +       <td valign="top" >property to indicate the framebuffer used by this plane is alpha pre-multiplied</td>
> +       </tr>
> +       <tr>
> +       <td valign="top" >"alpha"</td>
> +       <td valign="top" >RANGE</td>
> +       <td valign="top" >Min=0, Max=255</td>
> +       <td valign="top" >Plane</td>
> +       <td valign="top" >property to set plane's global alpha value</td>
> +       </tr>
> +       <tr>
> +       <td valign="top" >"zpos"</td>
> +       <td valign="top" >RANGE</td>
> +       <td valign="top" >Min=1, Max=255</td>
> +       <td valign="top" >Plane</td>
> +       <td valign="top" >property to set plane's z position during blending</td>

looks like we already have alpha and zpos props..  although it
wouldn't hurt to copy your description over for those props, since it
is a bit more complete than "TBD" that we have currently

BR,
-R

> +       </tr>
>         </tbody>
>         </table>
>      </sect2>
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
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