Add DisplayPort audio support for Xilinx ZynqMP platforms. This depends on patch adding cyclic DMA mode for DPDMA driver:
https://lore.kernel.org/all/[email protected]/ If that patch is missing, starting an audio playback will fail with an ASoC error. The cyclic DMA patch has recently been accepted to the DMA tree. The current DT is, for some reason, missing the DMA channels for the audio. This series adds that to the bindings and the dts file, but to support older dtb files without the audio DMA, the driver will not fail if the audio DMA is missing, but will just mark the audio support as disabled. To: Lars-Peter Clausen <[email protected]> To: Jaroslav Kysela <[email protected]> To: Takashi Iwai <[email protected]> To: Liam Girdwood <[email protected]> To: Mark Brown <[email protected]> To: Laurent Pinchart <[email protected]> To: Maarten Lankhorst <[email protected]> To: Maxime Ripard <[email protected]> To: Thomas Zimmermann <[email protected]> To: David Airlie <[email protected]> To: Daniel Vetter <[email protected]> To: Rob Herring <[email protected]> To: Krzysztof Kozlowski <[email protected]> To: Conor Dooley <[email protected]> To: Michal Simek <[email protected]> To: Krzysztof Kozlowski <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: Vishal Sagar <[email protected]> Cc: Anatoliy Klymenko <[email protected]> Cc: Péter Ujfalusi <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]> Changes in v3: - Expand the description in "dt-bindings: display/xlnx/zynqmp-dpsub: Add audio DMAs" to be more clear about the DT binding change. - Rebased on top of current upstream - Link to v2: https://lore.kernel.org/r/[email protected] Changes in v2: - Fix a missing double-quote in the DT binding - Link to v1: https://lore.kernel.org/r/[email protected] --- Tomi Valkeinen (3): dt-bindings: display/xlnx/zynqmp-dpsub: Add audio DMAs arm64: dts: zynqmp: Add DMA for DP audio drm: xlnx: zynqmp_dpsub: Add DP audio support .../bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml | 10 +- arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 7 +- drivers/gpu/drm/xlnx/Kconfig | 9 + drivers/gpu/drm/xlnx/Makefile | 1 + drivers/gpu/drm/xlnx/zynqmp_disp.c | 48 --- drivers/gpu/drm/xlnx/zynqmp_disp_regs.h | 7 +- drivers/gpu/drm/xlnx/zynqmp_dp.c | 54 ++- drivers/gpu/drm/xlnx/zynqmp_dp.h | 7 + drivers/gpu/drm/xlnx/zynqmp_dp_audio.c | 461 +++++++++++++++++++++ drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 39 +- drivers/gpu/drm/xlnx/zynqmp_dpsub.h | 15 +- 11 files changed, 553 insertions(+), 105 deletions(-) --- base-commit: 431c1646e1f86b949fa3685efc50b660a364c2b6 change-id: 20240312-xilinx-dp-audio-468ad12f9f64 Best regards, -- Tomi Valkeinen <[email protected]>
