Hi,
This series aims to make the nwl-dsi bridge be able to connect with more MIPI DSI panels. Some MIPI DSI panel drivers like 'raydium,rm68200' send MIPI_DCS_SET_DISPLAY_ON commands in panel_funcs->prepare(), which requires the MIPI DSI controller and PHY to be ready beforehand. However, the existing nwl-dsi driver gets the MIPI DSI controller and PHY ready in bridge_funcs->pre_enable(), which happens after the panel_funcs->prepare(). So, this series shifts the bridge operation ealier from bridge_funcs->pre_enable() to bridge_funcs->mode_set().
Patch 3/3 does the essential bridge operation shift.
Patch 1/3 and 2/3 are split from the original single patch in v2 and are needed by patch 3/3. This split-up helps clarify changes better. The split-up is done in this way:
1) Patch 1/3 forces a full modeset when crtc_state->active is changed to be true(which implies only connector's DPMS is brought out of "Off" status, though not necessarily). This makes sure ->mode_set() and ->atomic_disable() will be called in pairs. 2) Patch 2/3 removes a check on unchanged HS clock rate from ->mode_set(), to make sure MIPI DSI controller and PHY are brought up and taken down in pairs. 3) Patch 3/3 shifts the bridge operation as the last step.
v2->v3: * Split the single patch in v2 into 3 patches. (Neil)
v1->v2: * Fix a typo in commit message - s/unchange/unchanged/
Liu Ying (3): drm/bridge: nwl-dsi: Force a full modeset when crtc_state->active is changed to be true drm/bridge: nwl-dsi: Remove a check on unchanged HS clock rate from ->mode_set() drm/bridge: nwl-dsi: Get MIPI DSI controller and PHY ready in ->mode_set()
drivers/gpu/drm/bridge/nwl-dsi.c | 86 +++++++++++++++++--------------- 1 file changed, 46 insertions(+), 40 deletions(-)