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path: root/src/drivers/soundwire/alc5682
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2020-05-22drivers/soundwire/alc5682: Support Realtek ALC5682 SoundWire deviceDuncan Laurie
The ALC5682 headset codec can be connected over SoundWire and be configured for mainboards to use: - Data Port 0 and Bulk Register Access is supported - Data Ports 1-4 are supported as both source and sink The data port and audio mode properties are filled out as best as possible with the datasheet as a reference. The ACPI address for the codec is calculated with the information in the codec driver combined with the devicetree.cb hierarchy where the link and unique IDs are extracted from the device path. For example this device is connected to master link ID 0 and has strap settings configuring it for unique ID 1: chip drivers/soundwire/alc5682 register "desc" = ""Headset Codec"" device generic 0.1 on end end This driver was tested with the volteer reference design by booting and disassembling the runtime SSDT to ensure that the devices have the expected address and properties. Device (SW01) { Name (_ADR, 0x000021025D568200) Name (_DDN, "Headset Codec") Name (_DSD, Package () { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () { "mipi-sdw-sw-interface-revision", 0x00010000 }, [...] }, ToUUID ("dbb8e3e6-5886-4ba6-8795-1319f52a966b"), Package () { Package () { "mipi-sdw-port-bra-mode-0", "BRA0" }, Package () { "mipi-sdw-dp-0-subproperties", "DP0" }, Package () { "mipi-sdw-port-audio-mode-0", "MOD0" }, Package () { "mipi-sdw-dp-1-source-subproperties", "SRC1" }, Package () { "mipi-sdw-dp-1-sink-subproperties", "SNK1" }, [...] } } Name (BRA0, Package () { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () { "mipi-sdw-bra-mode-bus-frequency-configs", Package () { 0x000F4240, [...] } }, [...] } } Name (DP0, Package () { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () { "mipi-sdw-bra-flow-controlled", Zero }, [...] }, ToUUID ("dbb8e3e6-5886-4ba6-8795-1319f52a966b"), Package () { Package () { "mipi-sdw-port-bra-mode-0", "BRA0" } } } Name (MOD0, Package () { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () { "mipi-sdw-audio-mode-bus-frequency-configs", Package () { 0x000F4240, [...] } }, [...] } } Name (SNK1, Package () { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () { "mipi-sdw-data-port-type", Zero }, [...] }, ToUUID ("dbb8e3e6-5886-4ba6-8795-1319f52a966b"), Package () { Package () { "mipi-sdw-port-audio-mode-0", "MOD0" } } } Name (SNK1, Package () { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () { "mipi-sdw-data-port-type", Zero }, [...] }, ToUUID ("dbb8e3e6-5886-4ba6-8795-1319f52a966b"), Package () { Package () { "mipi-sdw-port-audio-mode-0", "MOD0" } } } } BUG=b:146482091 Signed-off-by: Duncan Laurie <dlaurie@google.com> Change-Id: I488dcd81d2e66a6f2c269ab7fa9f7ceaf2cbf003 Reviewed-on: https://review.coreboot.org/c/coreboot/+/40891 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>