drm/rcar-du: dsi: Implement DSI command support

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Implement support for DSI command transfer. Transmission of both Short
Packet and Long Packet is implemented, so is command transmission to
request response from peripheral device and transmission of non-read
command with BTA.

The AXI memory access mode is currently not implemented, each transfer
is performed purely using controller register interface. Short Packet
transfer can transfer up to 2 Bytes of data, Long Packet transfer can
transfer up to 16 Bytes of data.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Link: https://lore.kernel.org/r/20250831190507.327848-1-marek.vasut+renesas@mailbox.org
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

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Marek Vasut 2025-08-31 21:04:25 +02:00 • committed by Tomi Valkeinen

parent b5ddb9ab3d

commit 685e8dae19

2 changed files with 350 additions and 0 deletions

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225

drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi.c

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125

drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi_regs.h

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