linux.git/include/linux/soundwire/sdw.h, branch v5.9-rc2

soundwire: sdw.h: fix indentation

2020-07-15T09:52:33+00:00

Not sure how this went undetected for years.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Guennadi Liakhovetski 
Reviewed-by: Rander Wang 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20200714213744.24674-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: sdw.h: fix PRBS/Static_1 swapped definitions

2020-07-15T09:52:33+00:00

Table 110 "Port Data Modes" of the SoundWire 1.2 specification lists
PRBS as b01 and Static_1 as b11. The existing headers swapped the two
values, fix.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Guennadi Liakhovetski 
Reviewed-by: Rander Wang 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20200714213744.24674-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: stream: add helper to startup/shutdown streams

2020-07-15T04:40:05+00:00

To handle streams at the dailink level, expose two helpers that will
be called from machine drivers.

Reviewed-by: Ranjani Sridharan 
Reviewed-by: Guennadi Liakhovetski 
Reviewed-by: Kai Vehmanen 
Signed-off-by: Pierre-Louis Bossart 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20200630184356.24939-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: extend SDW_SLAVE_ENTRY

2020-06-30T15:56:17+00:00

The SoundWire 1.2 specification adds new capabilities that were not
present in previous version, such as the class ID.

To enable support for class drivers, and well as drivers that address
a specific version, all fields of the sdw_device_id structure need to
be exposed. For SoundWire 1.0 and 1.1 devices, a wildcard is used so
class and version information are ignored.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Guennadi Liakhovetski 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20200608205436.2402-4-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: disco: s/ch/channels/

2020-05-20T11:52:30+00:00

Use more meaningful member names in preparation for sysfs support.
No functionality change.

Signed-off-by: Pierre-Louis Bossart 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20200518203551.2053-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: bus_type: add sdw_master_device support

2020-05-19T07:14:35+00:00

In the existing SoundWire code, Master Devices are not explicitly
represented - only SoundWire Slave Devices are exposed (the use of
capital letters follows the SoundWire specification conventions).

With the existing code, the bus is handled without using a proper device,
and bus->dev typically points to a platform device. The right thing to
do as discussed in multiple reviews is use a device for each bus.

The sdw_master_device addition is done with minimal internal plumbing
and not exposed externally. The existing API based on
sdw_bus_master_add() and sdw_bus_master_delete() will deal with the
sdw_master_device life cycle, which minimizes changes to existing
drivers.

Note that the Intel code will be modified in follow-up patches (no
impact on any platform since the connection with ASoC is not supported
upstream so far).

Signed-off-by: Pierre-Louis Bossart 
Signed-off-by: Bard Liao 
Acked-by: Jaroslav Kysela 
Link: https://lore.kernel.org/r/20200518174322.31561-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: bus: add unique bus id

2020-05-19T07:14:34+00:00

Adding an unique id for each bus.

Suggested-by: Vinod Koul 
Signed-off-by: Bard Liao 
Acked-by: Jaroslav Kysela 
Link: https://lore.kernel.org/r/20200518174322.31561-4-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: bus: rename sdw_bus_master_add/delete, add arguments

2020-05-19T07:14:34+00:00

In preparation for future extensions, rename functions to use
sdw_bus_master prefix and add a parent and fwnode argument to
sdw_bus_master_add to help with device registration in follow-up
patches.

No functionality change, just renames and additional arguments.

The Intel code is currently unused, the two additional arguments are
only needed for compilation.

Signed-off-by: Pierre-Louis Bossart 
Signed-off-by: Bard Liao 
Acked-by: Jaroslav Kysela 
Link: https://lore.kernel.org/r/20200518174322.31561-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

Merge branch 'topic/ro_wordlength' into next

2020-03-20T13:55:14+00:00

soundwire: stream: Add read_only_wordlength flag to port properties

2020-03-20T13:54:59+00:00

According to SoundWire Specification Version 1.2.
"A Data Port number X (in the range 0-14) which supports only one
value of WordLength may implement the WordLength field in the
DPX_BlockCtrl1 Register as Read-Only, returning the fixed value of
WordLength in response to reads."

As WSA881x interfaces in PDM mode making the only field "WordLength"
in DPX_BlockCtrl1" fixed and read-only. Behaviour of writing to this
register on WSA881x soundwire slave with Qualcomm Soundwire Controller
is throwing up an error. Not sure how other controllers deal with
writing to readonly registers, but this patch provides a way to avoid
writes to DPN_BlockCtrl1 register by providing a read_only_wordlength
flag in struct sdw_dpn_prop

Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20200311113545.23773-2-srinivas.kandagatla@linaro.org
Signed-off-by: Vinod Koul