[PATCH v6 0/8] drm: cec: convert DRM drivers to the new notifier API

Dariusz Marcinkiewicz darekm at google.com
Tue Aug 13 11:02:32 UTC 2019

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

Only first two patches were tested on the actual hardware.

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 (8):
  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

 drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c | 13 ++++---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c     | 36 +++++++++++--------
 drivers/gpu/drm/exynos/exynos_hdmi.c          | 31 +++++++++-------
 drivers/gpu/drm/i2c/tda9950.c                 | 12 +++----
 drivers/gpu/drm/i2c/tda998x_drv.c             | 33 +++++++++++------
 drivers/gpu/drm/i915/display/intel_hdmi.c     | 13 ++++---
 drivers/gpu/drm/sti/sti_hdmi.c                | 19 ++++++----
 drivers/gpu/drm/tegra/output.c                | 28 +++++++++++----
 8 files changed, 117 insertions(+), 68 deletions(-)


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