linux-kernel - [PATCH v7 0/9] drm: cec: convert DRM drivers to the new notifier API

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Date:   Wed, 14 Aug 2019 12:44:58 +0200
From:   Dariusz Marcinkiewicz <darekm@...gle.com>
To:     dri-devel@...ts.freedesktop.org, linux-media@...r.kernel.org,
        hverkuil-cisco@...all.nl
Cc:     Dariusz Marcinkiewicz <darekm@...gle.com>,
        Alex Deucher <alexander.deucher@....com>,
        Allison Randal <allison@...utok.net>,
        amd-gfx@...ts.freedesktop.org, Andrzej Hajda <a.hajda@...sung.com>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Colin Ian King <colin.king@...onical.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        David Francis <David.Francis@....com>,
        Dhinakaran Pandiyan <dhinakaran.pandiyan@...el.com>,
        Douglas Anderson <dianders@...omium.org>,
        Enrico Weigelt <info@...ux.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        Harry Wentland <harry.wentland@....com>,
        Imre Deak <imre.deak@...el.com>,
        intel-gfx@...ts.freedesktop.org,
        Jani Nikula <jani.nikula@...el.com>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        "Jerry (Fangzhi) Zuo" <Jerry.Zuo@....com>,
        Jonas Karlman <jonas@...boo.se>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Leo Li <sunpeng.li@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, linux-tegra@...r.kernel.org,
        Lyude Paul <lyude@...hat.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Manasi Navare <manasi.d.navare@...el.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        nouveau@...ts.freedesktop.org,
        Ramalingam C <ramalingam.c@...el.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Sam Ravnborg <sam@...nborg.org>,
        Sean Paul <seanpaul@...omium.org>,
        Shashank Sharma <shashank.sharma@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Thomas Lim <Thomas.Lim@....com>,
        "Ville Syrjälä" 
        <ville.syrjala@...ux.intel.com>
Subject: [PATCH v7 0/9] drm: cec: convert DRM drivers to the new notifier API

This series updates DRM drivers to use new CEC notifier API.

Changes since v6:
	Made CEC notifiers' registration and de-registration symmetric
	in tda998x and dw-hdmi drivers. Also, accidentally dropped one
	patch in v6 (change to drm_dp_cec), brought it back now.
Changes since v5:
        Fixed a warning about a missing comment for a new member of
	drm_dp_aux_cec struct. Sending to a wider audience,
	including maintainers of respective drivers.
Changes since v4:
	Addressing review comments.
Changes since v3:
        Updated adapter flags in dw-hdmi-cec.
Changes since v2:
	Include all DRM patches from "cec: improve notifier support,
	add connector info connector info" series.
Changes since v1:
	Those patches delay creation of notifiers until respective
	connectors are constructed. It seems that those patches, for a
	couple of drivers, by adding the delay, introduce a race between
	notifiers' creation and the IRQs handling threads - at least I
	don't see anything obvious in there that would explicitly forbid
	such races to occur. v2 adds a write barrier to make sure IRQ
	threads see the notifier once it is created (replacing the
	WRITE_ONCE I put in v1). The best thing to do here, I believe,
	would be not to have any synchronization and make sure that an IRQ
	only gets enabled after the notifier is created.
Dariusz Marcinkiewicz (9):
  drm_dp_cec: add connector info support.
  drm/i915/intel_hdmi: use cec_notifier_conn_(un)register
  dw-hdmi-cec: use cec_notifier_cec_adap_(un)register
  tda9950: use cec_notifier_cec_adap_(un)register
  drm: tda998x: use cec_notifier_conn_(un)register
  drm: sti: use cec_notifier_conn_(un)register
  drm: tegra: use cec_notifier_conn_(un)register
  drm: dw-hdmi: use cec_notifier_conn_(un)register
  drm: exynos: exynos_hdmi: use cec_notifier_conn_(un)register

 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |  2 +-
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c | 13 +++---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c     | 46 +++++++++++++------
 drivers/gpu/drm/drm_dp_cec.c                  | 25 ++++++----
 drivers/gpu/drm/exynos/exynos_hdmi.c          | 31 +++++++------
 drivers/gpu/drm/i2c/tda9950.c                 | 12 ++---
 drivers/gpu/drm/i2c/tda998x_drv.c             | 36 ++++++++++-----
 drivers/gpu/drm/i915/display/intel_dp.c       |  4 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     | 13 ++++--
 drivers/gpu/drm/nouveau/nouveau_connector.c   |  3 +-
 drivers/gpu/drm/sti/sti_hdmi.c                | 19 +++++---
 drivers/gpu/drm/tegra/output.c                | 28 ++++++++---
 include/drm/drm_dp_helper.h                   | 17 ++++---
 13 files changed, 155 insertions(+), 94 deletions(-)

-- 
2.23.0.rc1.153.gdeed80330f-goog