From: "Klymenko, Anatoliy" <Anatoliy.Klymenko@amd.com>
To: Maxime Ripard <mripard@kernel.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
"Simek, Michal" <michal.simek@amd.com>,
Andrzej Hajda <andrzej.hajda@intel.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Robert Foss <rfoss@kernel.org>, Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>
Subject: RE: [PATCH v3 7/9] drm/atomic-helper: Add select_output_bus_format callback
Date: Fri, 22 Mar 2024 19:15:19 +0000 [thread overview]
Message-ID: <MW4PR12MB71657AF1E6B7AC96647133D6E6312@MW4PR12MB7165.namprd12.prod.outlook.com> (raw)
In-Reply-To: <20240322-passionate-lyrebird-of-trust-819718@houat>
Hi Maxime,
Thank you for the review.
> -----Original Message-----
> From: Maxime Ripard <mripard@kernel.org>
> Sent: Friday, March 22, 2024 2:45 AM
> To: Klymenko, Anatoliy <Anatoliy.Klymenko@amd.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>; Maarten Lankhorst
> <maarten.lankhorst@linux.intel.com>; Thomas Zimmermann
> <tzimmermann@suse.de>; David Airlie <airlied@gmail.com>; Daniel Vetter
> <daniel@ffwll.ch>; Simek, Michal <michal.simek@amd.com>; Andrzej Hajda
> <andrzej.hajda@intel.com>; Neil Armstrong <neil.armstrong@linaro.org>; Robert
> Foss <rfoss@kernel.org>; Jonas Karlman <jonas@kwiboo.se>; Jernej Skrabec
> <jernej.skrabec@gmail.com>; Rob Herring <robh+dt@kernel.org>; Krzysztof
> Kozlowski <krzysztof.kozlowski+dt@linaro.org>; Conor Dooley
> <conor+dt@kernel.org>; Mauro Carvalho Chehab <mchehab@kernel.org>; Tomi
> Valkeinen <tomi.valkeinen@ideasonboard.com>; dri-devel@lists.freedesktop.org;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
> devicetree@vger.kernel.org; linux-media@vger.kernel.org
> Subject: Re: [PATCH v3 7/9] drm/atomic-helper: Add select_output_bus_format
> callback
>
> On Thu, Mar 21, 2024 at 01:43:45PM -0700, Anatoliy Klymenko wrote:
> > diff --git a/drivers/gpu/drm/drm_crtc_helper.c
> > b/drivers/gpu/drm/drm_crtc_helper.c
> > index 2dafc39a27cb..f2e12a3c4e5f 100644
> > --- a/drivers/gpu/drm/drm_crtc_helper.c
> > +++ b/drivers/gpu/drm/drm_crtc_helper.c
> > @@ -1055,3 +1055,39 @@ int drm_helper_force_disable_all(struct
> drm_device *dev)
> > return ret;
> > }
> > EXPORT_SYMBOL(drm_helper_force_disable_all);
> > +
> > +/**
> > + * drm_helper_crtc_select_output_bus_format - Select output media bus
> > +format
> > + * @crtc: The CRTC to query
> > + * @crtc_state: The new CRTC state
> > + * @supported_fmts: List of media bus format options to pick from
> > + * @num_supported_fmts: Number of media bus formats in
> > +@supported_fmts list
> > + *
> > + * Encoder drivers may call this helper to give the connected CRTC a
> > +chance to
> > + * select compatible or preffered media bus format to use over the
> > +CRTC encoder
> > + * link. Encoders should provide list of supported input
> > +MEDIA_BUS_FMT_* for
> > + * CRTC to pick from. CRTC driver is expected to select preferred
> > +media bus
> > + * format from the list and, once enabled, generate the signal accordingly.
> > + *
> > + * Returns:
> > + * Selected preferred media bus format or 0 if CRTC does not support
> > +any from
> > + * @supported_fmts list.
> > + */
> > +u32 drm_helper_crtc_select_output_bus_format(struct drm_crtc *crtc,
> > + struct drm_crtc_state *crtc_state,
> > + const u32 *supported_fmts,
> > + unsigned int num_supported_fmts) {
> > + if (!crtc || !supported_fmts || !num_supported_fmts)
> > + return 0;
> > +
> > + if (!crtc->helper_private ||
> > + !crtc->helper_private->select_output_bus_format)
> > + return supported_fmts[0];
> > +
> > + return crtc->helper_private->select_output_bus_format(crtc,
> > + crtc_state,
> > + supported_fmts,
> > + num_supported_fmts);
> > +}
>
> Again, the output of that selection must be found in the CRTC state, otherwise
> CRTCs have no way to know which have been selected.
>
Yes, now I got it - thank you. I'll fix this in the next version.
> Maxime
Thank you,
Anatoliy
next prev parent reply other threads:[~2024-03-22 19:15 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-21 20:43 [PATCH v3 0/9] Setting live video input format for ZynqMP DPSUB Anatoliy Klymenko
2024-03-21 20:43 ` [PATCH v3 1/9] drm: xlnx: zynqmp_dpsub: Set layer mode during creation Anatoliy Klymenko
2024-04-05 12:06 ` Tomi Valkeinen
2024-04-05 12:31 ` Tomi Valkeinen
2024-04-08 18:21 ` Klymenko, Anatoliy
2024-03-21 20:43 ` [PATCH v3 2/9] drm: xlnx: zynqmp_dpsub: Update live format defines Anatoliy Klymenko
2024-04-05 12:10 ` Tomi Valkeinen
2024-04-08 18:17 ` Klymenko, Anatoliy
2024-03-21 20:43 ` [PATCH v3 3/9] drm: xlnx: zynqmp_dpsub: Add connected live layer helper Anatoliy Klymenko
2024-04-05 12:12 ` Tomi Valkeinen
2024-03-21 20:43 ` [PATCH v3 4/9] drm: xlnx: zynqmp_dpsub: Anounce supported input formats Anatoliy Klymenko
2024-04-05 12:39 ` Tomi Valkeinen
2024-03-21 20:43 ` [PATCH v3 5/9] drm: xlnx: zynqmp_dpsub: Minimize usage of global flag Anatoliy Klymenko
2024-04-05 12:42 ` Tomi Valkeinen
2024-03-21 20:43 ` [PATCH v3 6/9] drm: xlnx: zynqmp_dpsub: Set input live format Anatoliy Klymenko
2024-04-05 12:56 ` Tomi Valkeinen
2024-03-21 20:43 ` [PATCH v3 7/9] drm/atomic-helper: Add select_output_bus_format callback Anatoliy Klymenko
2024-03-22 9:44 ` Maxime Ripard
2024-03-22 19:15 ` Klymenko, Anatoliy [this message]
2024-03-21 20:43 ` [PATCH v3 8/9] dt-bindings: xlnx: Add VTC and TPG bindings Anatoliy Klymenko
2024-03-21 22:25 ` Rob Herring
2024-03-22 5:57 ` Krzysztof Kozlowski
2024-03-22 5:59 ` Krzysztof Kozlowski
2024-03-22 18:05 ` Conor Dooley
2024-03-23 10:22 ` Krzysztof Kozlowski
2024-03-23 19:08 ` Conor Dooley
2024-03-22 19:12 ` Klymenko, Anatoliy
2024-03-23 10:20 ` Krzysztof Kozlowski
2024-03-29 0:38 ` Klymenko, Anatoliy
2024-03-29 15:46 ` Conor Dooley
2024-03-30 2:02 ` Klymenko, Anatoliy
2024-03-30 9:27 ` Krzysztof Kozlowski
2024-03-21 20:43 ` [PATCH v3 9/9] drm: xlnx: Intoduce TPG CRTC driver Anatoliy Klymenko
2024-03-23 10:19 ` [PATCH v3 0/9] Setting live video input format for ZynqMP DPSUB Krzysztof Kozlowski
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