linux-kernel - [PATCH v5 00/17] Apply drm_bridge_connector and panel

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Message-Id: <20250912085846.7349-1-damon.ding@rock-chips.com>
Date: Fri, 12 Sep 2025 16:58:29 +0800
From: Damon Ding <damon.ding@...k-chips.com>
To: andrzej.hajda@...el.com,
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Cc: Laurent.pinchart@...asonboard.com,
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	Damon Ding <damon.ding@...k-chips.com>
Subject: [PATCH v5 00/17] Apply drm_bridge_connector and panel_bridge helper for the Analogix DP driver

PATCH 1 is a small format optimization for struct analogid_dp_device.
PATCH 2 is to perform mode setting in &drm_bridge_funcs.atomic_enable.
PATCH 3-9 are preparations for apply drm_bridge_connector helper.
PATCH 10 is to apply the drm_bridge_connector helper.
PATCH 11-14 are to move the panel/bridge parsing to the Analogix side.
PATCH 15-16 are preparations for apply panel_bridge helper.
PATCH 17 is to apply the panel_bridge helper.

Damon Ding (17):
  drm/bridge: analogix_dp: Formalize the struct analogix_dp_device
  drm/bridge: analogix_dp: Move &drm_bridge_funcs.mode_set to
    &drm_bridge_funcs.atomic_enable
  drm/bridge: analogix_dp: Add &analogix_dp_plat_data.next_bridge
  drm/exynos: exynos_dp: Remove &exynos_dp_device.ptn_bridge
  drm/exynos: exynos_dp: Remove unused &exynos_dp_device.connector
  drm/bridge: analogix_dp: Remove redundant
    &analogix_dp_plat_data.skip_connector
  drm/exynos: exynos_dp: Add legacy bridge to parse the display-timings
    node
  drm/bridge: analogix_dp: Move the color format check to
    .atomic_check() for Rockchip platforms
  drm/bridge: analogix_dp: Remove unused
    &analogix_dp_plat_data.get_modes()
  drm/bridge: analogix_dp: Apply drm_bridge_connector helper
  drm/bridge: analogix_dp: Add new API analogix_dp_finish_probe()
  drm/rockchip: analogix_dp: Apply analogix_dp_finish_probe()
  drm/rockchip: analogix_dp: Apply &analogix_dp_plat_data.attach() to
    attach next bridge
  drm/exynos: exynos_dp: Apply analogix_dp_finish_probe()
  drm/bridge: analogix_dp: Remove panel disabling and enabling in
    analogix_dp_set_bridge()
  drm/bridge: analogix_dp: Remove bridge disabing and panel unpreparing
    in analogix_dp_unbind()
  drm/bridge: analogix_dp: Apply panel_bridge helper

 drivers/gpu/drm/bridge/analogix/Kconfig       |   1 +
 .../drm/bridge/analogix/analogix_dp_core.c    | 394 ++++++++++--------
 .../drm/bridge/analogix/analogix_dp_core.h    |   5 +-
 drivers/gpu/drm/exynos/exynos_dp.c            | 168 ++++----
 drivers/gpu/drm/rockchip/Kconfig              |   1 -
 .../gpu/drm/rockchip/analogix_dp-rockchip.c   |  74 ++--
 include/drm/bridge/analogix_dp.h              |   9 +-
 7 files changed, 342 insertions(+), 310 deletions(-)

---

Changes in v2:
- Update Exynos DP driver synchronously.
- Move the panel/bridge parsing to the Analogix side.

Changes in v3:
- Rebase for the existing devm_drm_bridge_alloc() applying commit.
- Fix the typographical error of panel/bridge check in exynos_dp_bind().
- Squash all commits related to skip_connector deletion in both Exynos and
  Analogix code into one.
- Apply panel_bridge helper to make the codes more concise.
- Fix the handing of bridge in analogix_dp_bridge_get_modes().
- Remove unnecessary parameter struct drm_connector* for callback
  &analogix_dp_plat_data.attach().
- In order to decouple the connector driver and the bridge driver, move
  the bridge connector initilization to the Rockchip and Exynos sides.

Changes in v4:
- Rebase for the applied &drm_bridge_funcs.detect() modification commit.
- Rename analogix_dp_find_panel_or_bridge() to analogix_dp_finish_probe().
- Drop the drmm_encoder_init() modification commit.
- Rename the &analogix_dp_plat_data.bridge to
  &analogix_dp_plat_data.next_bridge.

Changes in v5:
- Add legacy bridge to parse the display-timings node under the dp node
  for Exynos side.
- Move color format check to &drm_connector_helper_funcs.atomic_check()
  in order to get rid of &analogix_dp_plat_data.get_modes().
- Remove unused callback &analogix_dp_plat_data.get_modes().
- Distinguish the &drm_bridge->ops of Analogix bridge based on whether
  the downstream device is a panel, a bridge or neither.
- Select DRM_DISPLAY_DP_AUX_BUS for DRM_ANALOGIX_DP, and remove it for
  ROCKCHIP_ANALOGIX_DP.
- Apply rockchip_dp_attach() to support the next bridge attachment for
  the Rockchip side.
- Move next_bridge attachment from Analogix side to Rockchip/Exynos sides.

-- 
2.34.1