[v5,0/9] drm: cec: convert DRM drivers to the new notifier API

Message

Dariusz Marcinkiewicz Aug. 7, 2019, 8:52 a.m. UTC

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

Only first two patches were tested on the actual hardware.

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     | 36 +++++++++++--------
 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             | 33 +++++++++++------
 drivers/gpu/drm/i915/intel_dp.c               |  4 +--
 drivers/gpu/drm/i915/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                   | 14 ++++----
 13 files changed, 143 insertions(+), 90 deletions(-)