From: Boris Brezillon <boris.brezillon@collabora.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: dri-devel@lists.freedesktop.org,
Lucas Stach <l.stach@pengutronix.de>,
Chris Healy <cphealy@gmail.com>,
Andrey Smirnov <andrew.smirnov@gmail.com>,
Nikita Yushchenko <nikita.yoush@cogentembedded.com>,
kernel@collabora.com, Daniel Vetter <daniel@ffwll.ch>,
Inki Dae <inki.dae@samsung.com>,
Joonyoung Shim <jy0922.shim@samsung.com>,
Seung-Woo Kim <sw0312.kim@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Thierry Reding <thierry.reding@gmail.com>,
Sam Ravnborg <sam@ravnborg.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Rob Clark <robdclark@gmail.com>,
Andrzej Hajda <a.hajda@samsung.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@siol.net>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org
Subject: Re: [PATCH v3 12/21] drm/bridge: Add an ->atomic_check() hook
Date: Tue, 3 Dec 2019 11:11:51 +0100 [thread overview]
Message-ID: <20191203111151.28d86f53@collabora.com> (raw)
In-Reply-To: <20191202170336.GP4929@pendragon.ideasonboard.com>
On Mon, 2 Dec 2019 19:03:36 +0200
Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote:
> > + /**
> > + * @atomic_check:
> > + *
> > + * This method is responsible for checking bridge state correctness.
> > + * It can also check the state of the surrounding components in chain
> > + * to make sure the whole pipeline can work properly.
>
> As explained in the review of the RFC, I think it's a mistake not to
> define the semantics of this operation precisely, and in particular not
> to define explictly what parameters bridge drivers are allowed to modify
> here. I however don't want to make this a prerequisite for your series,
> so
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>
> but I'm sure we'll regret this later when different bridges will have
> slightly incompatible implementations.
Nothing prevents us from working on this clarification after the patch
series has been merged. I just said I couldn't come up with a good
set of rules on my own, as I don't really know what bridge->mode_fixup()
allows us to modify in the first place.
next prev parent reply other threads:[~2019-12-03 10:11 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-23 15:44 [PATCH v3 00/21] drm: Add support for bus-format negotiation Boris Brezillon
2019-10-23 15:44 ` [PATCH v3 01/21] drm/vc4: Declare the DSI encoder as a bridge element Boris Brezillon
2019-11-24 10:01 ` Laurent Pinchart
2019-11-24 10:47 ` Boris Brezillon
2019-10-23 15:44 ` [PATCH v3 02/21] drm/exynos: Don't reset bridge->next Boris Brezillon
2019-10-28 12:19 ` Inki Dae
2019-10-23 15:44 ` [PATCH v3 03/21] drm/exynos: Declare the DSI encoder as a bridge element Boris Brezillon
2019-11-24 10:24 ` Laurent Pinchart
2019-11-24 13:17 ` Boris Brezillon
2019-11-24 13:28 ` Boris Brezillon
2019-11-24 14:02 ` Laurent Pinchart
2019-10-23 15:44 ` [PATCH v3 04/21] drm/bridge: Rename bridge helpers targeting a bridge chain Boris Brezillon
2019-10-25 13:26 ` Neil Armstrong
2019-11-24 10:28 ` Laurent Pinchart
2019-10-23 15:44 ` [PATCH v3 05/21] drm/bridge: Introduce drm_bridge_chain_get_next_bridge() Boris Brezillon
2019-10-25 13:27 ` Neil Armstrong
2019-11-24 10:33 ` Laurent Pinchart
2019-11-24 10:56 ` Boris Brezillon
2019-11-24 14:04 ` Laurent Pinchart
2019-10-23 15:44 ` [PATCH v3 06/21] drm: Stop accessing encoder->bridge directly Boris Brezillon
2019-10-25 13:28 ` Neil Armstrong
2019-11-24 10:39 ` Laurent Pinchart
2019-11-24 13:40 ` Boris Brezillon
2019-10-23 15:44 ` [PATCH v3 07/21] drm/bridge: Make the bridge chain a double-linked list Boris Brezillon
2019-10-25 13:29 ` Neil Armstrong
2019-11-05 16:02 ` Neil Armstrong
2019-11-24 7:48 ` Boris Brezillon
2019-11-24 13:57 ` Laurent Pinchart
2019-10-23 15:44 ` [PATCH v3 08/21] drm/bridge: Add the drm_for_each_bridge_in_chain() helper Boris Brezillon
2019-10-25 13:30 ` Neil Armstrong
2019-11-24 14:07 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 09/21] drm/bridge: Add a drm_bridge_state object Boris Brezillon
2019-10-25 14:35 ` Neil Armstrong
2019-11-05 16:05 ` Neil Armstrong
2019-11-24 7:50 ` Boris Brezillon
2019-12-02 16:42 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 10/21] drm/bridge: Clarify the atomic enable/disable hooks semantics Boris Brezillon
2019-10-25 14:33 ` Neil Armstrong
2019-12-02 16:50 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 11/21] drm/bridge: Patch atomic hooks to take a drm_bridge_state Boris Brezillon
2019-12-02 16:57 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 12/21] drm/bridge: Add an ->atomic_check() hook Boris Brezillon
2019-10-25 14:35 ` Neil Armstrong
2019-12-02 17:03 ` Laurent Pinchart
2019-12-03 10:11 ` Boris Brezillon [this message]
2019-12-03 10:15 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 13/21] drm/bridge: Add the drm_bridge_chain_get_prev_bridge() helper Boris Brezillon
2019-10-25 14:34 ` Neil Armstrong
2019-12-02 17:05 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 14/21] drm/bridge: Add the necessary bits to support bus format negotiation Boris Brezillon
2019-12-03 10:03 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 15/21] drm/imx: pd: Use bus format/flags provided by the bridge when available Boris Brezillon
2019-12-03 13:50 ` Philipp Zabel
2019-10-23 15:45 ` [PATCH v3 16/21] drm/bridge: lvds-encoder: Implement basic bus format negotiation Boris Brezillon
2019-12-03 10:14 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 17/21] dt-bindings: display: bridge: lvds-transmitter: Add new props Boris Brezillon
2019-10-25 19:57 ` Rob Herring
2019-10-31 13:04 ` Boris Brezillon
2019-12-02 17:11 ` Laurent Pinchart
2019-12-03 12:38 ` Boris Brezillon
2019-12-03 13:22 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 18/21] drm/bridge: panel: Propage bus format/flags Boris Brezillon
2019-12-03 10:17 ` Laurent Pinchart
2020-01-22 9:27 ` Boris Brezillon
2019-10-23 15:45 ` [PATCH v3 19/21] drm/panel: simple: Add support for Toshiba LTA089AC29000 panel Boris Brezillon
2019-12-02 17:17 ` Laurent Pinchart
2019-12-03 12:42 ` Boris Brezillon
2019-12-03 13:28 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 20/21] dt-bindings: display: panel: Add the LTA089AC29000 variant Boris Brezillon
2019-10-25 19:58 ` Rob Herring
2019-12-02 17:19 ` Laurent Pinchart
2019-10-23 15:45 ` [PATCH v3 21/21] ARM: dts: imx: imx51-zii-rdu1: Fix the display pipeline definition Boris Brezillon
2019-10-24 11:27 ` [PATCH v3 00/21] drm: Add support for bus-format negotiation Neil Armstrong
2019-10-24 13:22 ` Boris Brezillon
2019-11-24 0:46 ` Ezequiel Garcia
2019-11-24 7:32 ` Boris Brezillon
2019-11-24 9:34 ` Ezequiel Garcia
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