linux-kernel - Re: [PATCH v4 00/10] Introduce new mode validation callbacks

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Date:   Mon, 22 May 2017 09:56:00 +0200
From:   Daniel Vetter <daniel@...ll.ch>
To:     Jose Abreu <Jose.Abreu@...opsys.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Carlos Palminha <CARLOS.PALMINHA@...opsys.com>,
        Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Dave Airlie <airlied@...ux.ie>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Archit Taneja <architt@...eaurora.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: Re: [PATCH v4 00/10] Introduce new mode validation callbacks

On Fri, May 19, 2017 at 01:52:09AM +0100, Jose Abreu wrote:
> This series is a follow up from the discussion at [1]. We start by
> introducing crtc->mode_valid(), encoder->mode_valid() and
> bridge->mode_valid() callbacks which will be used in followup
> patches and also by cleaning the documentation a little bit. This
> patch is available at [2] and the series depends on it.
> 
> We proceed by introducing new helpers to call this new callbacks
> at 1/10.
> 
> At 2/10 a helper function is introduced that calls all mode_valid()
> from a set of bridges.
> 
> Next, at 3/10 we modify the connector probe helper so that only modes
> which are supported by a given bridge+encoder+crtc combination are
> probbed.
> 
> At 4/10 we call all the mode_valid() callbacks for a given pipeline,
> except the connector->mode_valid one, so that the mode is validated.
> This is done before calling mode_fixup().
> 
> Finally, from 5/10 to 10/10 we use the new callbacks in drivers that
> can implement it.
> 
> [1] https://patchwork.kernel.org/patch/9702233/
> [2] https://lists.freedesktop.org/archives/dri-devel/2017-May/141761.html
> 
> Jose Abreu (10):
>   drm: Add drm_{crtc/encoder/connector}_mode_valid()
>   drm: Introduce drm_bridge_mode_valid()
>   drm: Use new mode_valid() helpers in connector probe helper
>   drm: Use mode_valid() in atomic modeset
>   drm: arc: Use crtc->mode_valid() callback
>   drm/bridge: analogix-anx78xx: Use bridge->mode_valid() callback
>   drm/bridge/synopsys: dw-hdmi: Use bridge->mode_valid() callback
>   drm/arm: malidp: Use crtc->mode_valid() callback
>   drm/atmel-hlcdc: Use crtc->mode_valid() callback
>   drm: vc4: Use crtc->mode_valid() and encoder->mode_valid() callbacks

Looks all real nice, I think a bit more time to get acks/reviews/tested-by
for the driver conversions and I'll go and vacuum this all up.

Thanks a lot for doing this.
-Daniel

> 
> Cc: Carlos Palminha <palminha@...opsys.com>
> Cc: Alexey Brodkin <abrodkin@...opsys.com>
> Cc: Ville Syrjälä <ville.syrjala@...ux.intel.com>
> Cc: Daniel Vetter <daniel.vetter@...ll.ch>
> Cc: Dave Airlie <airlied@...ux.ie>
> Cc: Andrzej Hajda <a.hajda@...sung.com>
> Cc: Archit Taneja <architt@...eaurora.org>
> Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> 
>  drivers/gpu/drm/arc/arcpgu_crtc.c              |  29 ++++---
>  drivers/gpu/drm/arm/malidp_crtc.c              |  11 ++-
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c |   9 +--
>  drivers/gpu/drm/bridge/analogix-anx78xx.c      |  13 ++-
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c      |  40 +++-------
>  drivers/gpu/drm/drm_atomic_helper.c            |  76 +++++++++++++++++-
>  drivers/gpu/drm/drm_bridge.c                   |  33 ++++++++
>  drivers/gpu/drm/drm_crtc_helper_internal.h     |  13 +++
>  drivers/gpu/drm/drm_probe_helper.c             | 105 ++++++++++++++++++++++++-
>  drivers/gpu/drm/imx/dw_hdmi-imx.c              |   4 +-
>  drivers/gpu/drm/meson/meson_dw_hdmi.c          |   2 +-
>  drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c    |   2 +-
>  drivers/gpu/drm/vc4/vc4_crtc.c                 |  13 ++-
>  drivers/gpu/drm/vc4/vc4_dpi.c                  |  13 ++-
>  include/drm/bridge/dw_hdmi.h                   |   2 +-
>  include/drm/drm_bridge.h                       |   2 +
>  16 files changed, 280 insertions(+), 87 deletions(-)
> 
> -- 
> 1.9.1
> 
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch