kernel/linux.git/include/linux/soundwire, branch master

soundwire: amd: refactor bandwidth calculation logic

2026-03-09T07:01:41+00:00

For current platforms(ACP6.3/ACP7.0/ACP7.1/ACP7.2), AMD SoundWire manager doesn't have banked registers for data port programming on Manager's side. Need to use fixed block offsets, hstart & hstop for manager ports. Earlier amd manager driver has support for 12 MHz as a bus clock frequency where frame rate is 48000 and number of bits is 500, frame shape as 50 x 10 with fixed block offset mapping based on port number. Got a new requirement to support 6 MHz as a bus clock frequency. For 6 MHz bus clock frequency amd manager driver needs to support two different frame shapes i.e number of bits as 250 with frame rate as 48000 and frame shape as 125 x 2 and for the second combination number of bits as 500 where frame rate is 24000 and frame shape is 50 x 10. Few SoundWire peripherals doesn't support 125 x 2 as a frame shape for 6 MHz bus clock frequency. They have explicit requirement for the frame shape. In this scenario, amd manager driver needs to use 50 x 10 as a frame shape where frame rate is 24000. Based on the platform and SoundWire topology for 6Mhz support frame shape will be decided which is part of SoundWire manager DisCo tables. For current platforms, amd manager driver supports only two bus clock frequencies(12 MHz & 6 MHz). Refactor bandwidth logic to support different bus clock frequencies. Signed-off-by: Vijendar Mukunda Reviewed-by: Pierre-Louis Bossart Link: https://patch.msgid.link/20260226065638.1251771-3-Vijendar.Mukunda@amd.com Signed-off-by: Vinod Koul

soundwire: sdw.h: repair names and format of kernel-doc comments

2026-02-23T07:12:45+00:00

Fix all kernel-doc warnings in sdw.h: Warning: include/linux/soundwire/sdw.h:538 cannot understand function prototype: 'enum sdw_reg_bank' Warning: include/linux/soundwire/sdw.h:779 struct member 'port_num' not described in 'sdw_transport_params' Warning: include/linux/soundwire/sdw.h:792 struct member 'port_num' not described in 'sdw_enable_ch' Warning: include/linux/soundwire/sdw.h:892 cannot understand function prototype: 'struct sdw_port_config' Warning: include/linux/soundwire/sdw.h:906 cannot understand function prototype: 'struct sdw_stream_config' Warning: include/linux/soundwire/sdw.h:925 cannot understand function prototype: 'enum sdw_stream_state' Warning: include/linux/soundwire/sdw.h:942 cannot understand function prototype: 'struct sdw_stream_params' Warning: include/linux/soundwire/sdw.h:960 cannot understand function prototype: 'struct sdw_stream_runtime' Warning: include/linux/soundwire/sdw.h:1047 struct member 'bpt_stream_refcount' not described in 'sdw_bus' Signed-off-by: Randy Dunlap Reviewed-by: Charles Keepax Link: https://patch.msgid.link/20260216054418.2766846-1-rdunlap@infradead.org Signed-off-by: Vinod Koul

soundwire: Make remove function return no value

2025-12-23T06:42:49+00:00

All remove functions return zero and the driver core ignores any other returned value (just emits a warning about it being ignored). So make all remove callbacks return void instead of an ignored int. This is in line with most other subsystems. Signed-off-by: Uwe Kleine-König Link: https://patch.msgid.link/20251215174925.1327021-5-u.kleine-koenig@baylibre.com Signed-off-by: Vinod Koul

ASoC: SDCA: Add basic SDCA class driver

2025-11-20T17:23:00+00:00

Add a device level driver as the entry point for the class driver. Additional auxiliary drivers will be registered to support each function within the device. This driver will register those function drivers and provide the device level functionality, such as monitoring bus attach/detach, the device level register map, and the root for the IRQ handling. Co-developed-by: Maciej Strozek Tested-by: Bard Liao Reviewed-by: Maciej Strozek Reviewed-by: Peter Ujfalusi Tested-by: Richard Fitzgerald Signed-off-by: Charles Keepax Link: https://patch.msgid.link/20251120153023.2105663-13-ckeepax@opensource.cirrus.com Reviewed-by: Vinod Koul Signed-off-by: Mark Brown

soundwire: bus: add sdw_slave_get_current_bank helper

2025-09-18T21:24:27+00:00

There has been 2 instances of this helper in codec drivers, it does not make sense to keep duplicating this part of code. Lets add a helper sdw_get_current_bank() for codec drivers to use it. Signed-off-by: Srinivas Kandagatla Acked-by: Vinod Koul Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20250909121954.225833-5-srinivas.kandagatla@oss.qualcomm.com Signed-off-by: Mark Brown

soundwire: bus: add of_sdw_find_device_by_node helper

2025-09-18T21:24:26+00:00

There has been more than 3 instances of this helper in multiple codec drivers, it does not make sense to keep duplicating this part of code. Lets add a helper of_sdw_find_device_by_node for codec drivers to use it. Signed-off-by: Srinivas Kandagatla Reviewed-by: Dmitry Baryshkov Acked-by: Vinod Koul Link: https://patch.msgid.link/20250909121954.225833-4-srinivas.kandagatla@oss.qualcomm.com Signed-off-by: Mark Brown

soundwire: amd: Add support for acp7.2 platform

2025-07-21T05:13:21+00:00

Add soundwire support for acp7.2 platform. Signed-off-by: Venkata Prasad Potturu Link: https://lore.kernel.org/r/20250715121048.1795607-1-venkataprasad.potturu@amd.com Signed-off-by: Vinod Koul

Merge tag 'soundwire-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire

2025-06-05T15:07:24+00:00

Pull soundwire updates from Vinod Koul: "A couple of small core changes and an Intel driver change: - sdw_assign_device_num() logic simplification, using internal slave id for irqs and optimizing computing of port params in specific stream states - Intel driver updates for ACE3+ microphone privacy status reporting and enabling the status in HDA Intel driver" * tag 'soundwire-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: soundwire: only compute port params in specific stream states ASoC: SOF: Intel: hda: Set the mic_privacy flag for soundwire with ACE3+ soundwire: intel: Add awareness of ACE3+ microphone privacy soundwire: bus: Add internal slave ID and use for IRQs soundwire: bus: Simplify sdw_assign_device_num()

soundwire: intel: Add awareness of ACE3+ microphone privacy

2025-05-14T11:43:25+00:00

ACE3 introduced microphone privacy and along this feature it adds a new register in vendor specific SHIM to control and status reporting. The control of mic privacy via the SHIM register is only to enable the interrupt generation via soundwire, but not handled by the soundwire code as the mic privacy is not a feature of the soundwire IP. On the other hand, printing the register value brings value for debugging, so add a new flag to allow this conditionally. Signed-off-by: Peter Ujfalusi Reviewed-by: Ranjani Sridharan Signed-off-by: Bard Liao Link: https://lore.kernel.org/r/20250430074714.94000-2-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul

soundwire: bus: Add internal slave ID and use for IRQs

2025-05-14T11:42:50+00:00

Currently the SoundWire IRQ code uses the dev_num to create an IRQ mapping for each slave. However, there is an issue there, the dev_num is only allocated when the slave enumerates on the bus and enumeration may happen before or after probe of the slave driver. In the case enumeration happens after probe of the slave driver then the IRQ mapping will use dev_num before it is set. This could cause multiple slaves to use zero as their IRQ mapping. It is very desirable to have the IRQ mapped before the slave probe is called, so drivers can do resource allocation in probe as normal. To solve these issues add an internal ID created for each slave when it is probed and use that for mapping the IRQ. Signed-off-by: Charles Keepax Reviewed-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20250429101808.348462-3-ckeepax@opensource.cirrus.com Signed-off-by: Vinod Koul