[PATCH v2 0/4] Add HDMI 2.0 support to DW HDMI QP TX

[Cristian Ciocaltea]

This patch series provides the missing support for high TMDS clock ratio
and scrambling to DW HDMI QP TX library, required for handling HDMI 2.0
display modes on RK3576 & RK3588 SoCs.

In order to allow addressing the SCDC status lost on sink disconnects,
it adds an atomic variant of the drm_bridge_funcs.detect callback and a
new drm_bridge_detect_ctx() helper, which is further used in
drm_bridge_connector to switch to ->detect_ctx hook.

Furthermore, it optimizes HPD event handling in dw_hdmi_qp Rockchip
platform driver to run the detect cycle on the affected connector only.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
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Changes in v2:
- Collected Tested-by tags from Diederik and Maud
- Rebased onto latest drm-misc-next
- Ensured the recently introduced 'no-hpd' support for dealing with
  unconnected/repurposed/broken HPD pin is limited to HDMI 1.4 rates
- Link to v1: https://lore.kernel.org/r/20251203-dw-hdmi-qp-scramb-v1-0-836fe7401a69@xxxxxxxxxxxxx

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Cristian Ciocaltea (4):
      drm/bridge: Add ->detect_ctx hook and drm_bridge_detect_ctx()
      drm/bridge-connector: Switch to using ->detect_ctx hook
      drm/bridge: dw-hdmi-qp: Add high TMDS clock ratio and scrambling support
      drm/rockchip: dw_hdmi_qp: Do not send HPD events for all connectors

 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c   | 184 ++++++++++++++++++++++---
 drivers/gpu/drm/display/drm_bridge_connector.c |  73 +++++-----
 drivers/gpu/drm/drm_bridge.c                   |  58 ++++++++
 drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c |  44 +++---
 include/drm/drm_bridge.h                       |  30 ++++
 5 files changed, 313 insertions(+), 76 deletions(-)
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base-commit: 38feb171b3f92d77e8061fafb5ddfffc2c13b672
change-id: 20251203-dw-hdmi-qp-scramb-cdbd8b57ccf9