linux-stable.git/include/linux/soundwire, branch master

soundwire: Move wait for initialisation helper to header

2026-06-23T11:52:30+00:00

As SoundWire devices tend to enumerate on the bus after probe, drivers
frequently need to wait for the device to initialise from common driver
code. The common system is to split drivers into a core module and then
a module for each communication bus. These two facts tend to cause
Kconfig issues, the issue tends to be when SOUNDWIRE=m and DRIVER_I2C=y,
this usually selects DRIVER=y. The driver code then wants to call
sdw_slave_wait_for_init(), but this results in calling a module function
from built in code. A depends on SOUNDWIRE | !SOUNDWIRE could be added to
the end driver but this seems slightly off as it adds a lot of counter
intuitive depends.

A simpler solution is to make sdw_slave_wait_for_init() a static inline
function. As part of doing this add a check for the slave device being
NULL acknowledging that this is likely called from code that is shared
between control buses. It does require dropping the call to
sdw_show_ping_status() but this can be added back in end drivers that
used it originally.

Currently this is causing rand config issues on RT5682 and will soon
also cause similar problems on cs42l43.

Acked-by: Vinod Koul 
Acked-by: Arnd Bergmann 
Signed-off-by: Charles Keepax 
Link: https://patch.msgid.link/20260623101814.24044-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown

soundwire: Add a helper function to wait for device initialisation

2026-05-12T10:46:59+00:00

Add a new helper function to wait for the device to enumerate
and be initialised by the SoundWire core. Most of the SoundWire
drivers have very similar boiler plate code in their runtime
resume, and that boiler plate tends to access various internals
of the SoundWire structs which is a mild layering violation.

Adding a new core helper function greatly eases both of these
issues.

Acked-by: Vinod Koul 
Signed-off-by: Charles Keepax 
Link: https://patch.msgid.link/20260512103022.1154645-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown

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()