kernel/linux.git/drivers/gpu/drm/sun4i, branch v6.19.11

drm/sun4i: Nuke mixer pointer from layer code

2025-11-12T09:18:25+00:00

It's not used anymore, so remove it. This allows trully independent layer state from mixer. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-31-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: vi_scaler: Find mixer from crtc

2025-11-12T09:18:25+00:00

With "floating" planes in DE33, mixer can't be stored in layer structure anymore. Find mixer using currently bound crtc. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-30-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: layer: replace mixer with layer struct

2025-11-12T09:18:25+00:00

This allows to almost completely decouple layer code from mixer. This is important for DE33. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-29-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: mixer: split out layer config

2025-11-12T09:18:25+00:00

Later special plane only driver for DE33 will provide separate configuration. This change will also help layer driver migrate away from mixer structure. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-28-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: mixer: Add quirk for number of VI scalers

2025-11-12T09:18:25+00:00

On DE2 and DE3, UI scalers are located right after VI scalers. So in order to calculate proper UI scaler base address, number of VI scalers must be known. In practice, it is same as number of VI channels, but it doesn't need to be. Let's make a quirk for this number. Code for configuring channels and associated functions won't have access to vi_num quirk anymore after rework for independent planes. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-27-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: ui_scaler: drop sanity checks

2025-11-12T09:18:24+00:00

They can't be triggered if mixer configuration is properly specified in quirks. Additionally, number of VI channels won't be available in future due to rework for DE33 support. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-26-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: mixer: Convert heuristics to quirk

2025-11-12T09:18:24+00:00

Determination if FCC unit can be used for VI layer alpha depends on number of VI channels. This info won't be available anymore in future to VI layer driver because of DE33 way of allocating planes from same pool to different mixers. While order is slightly changed, it doesn't affect anything due to double buffering of registers. New order keeps related registers together and quirk separate. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-25-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: vi_scaler: Update DE33 base calculation

2025-11-12T09:18:24+00:00

Now that channel base calculation is straightforward, let's update VI scaler base calculation to be simpler. At the same time, also introduce macro to avoid magic numbers. Note, reason why current magic value and new macro value isn't the same is because sun8i_channel_base() already introduces offset to channel registers. Previous value is just the difference to VI scaler registers. However, new code calculates scaler base from channel base. This is also easier to understand when looking into BSP driver. Macro value can be easily found whereas old diff value was not. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-24-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: layers: add physical index arg

2025-11-12T09:18:23+00:00

This avoids plane mapping in layers code, which allows future refactoring, when layer code will move away from accessing mixer structure. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-23-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai

drm/sun4i: csc: use layer arg instead of mixer

2025-11-12T09:18:23+00:00

Layer will be more universal, due to DE33 support. Reviewed-by: Chen-Yu Tsai Tested-by: Ryan Walklin Signed-off-by: Jernej Skrabec Link: https://patch.msgid.link/20251104180942.61538-22-jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai