linux.git/include/linux/soundwire, branch v5.7

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

Merge branch 'topic/asoc' into next

2020-02-26T08:48:34+00:00

soundwire: add helper macros for devID fields

2020-02-26T08:48:25+00:00

Move bit extractors to macros, so that the definitions can be used by
other drivers parsing the MIPI definitions extracted from firmware
tables (ACPI or DT).

Signed-off-by: Pierre-Louis Bossart 
Link: https://lore.kernel.org/r/20200225170041.23644-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: bus: add clock stop helpers

2020-02-25T10:27:02+00:00

SoundWire supports two clock stop modes. Add support to handle the
clock stop modes and add pm_runtime calls in the bus.

Credits: this patch is based on an earlier internal contribution by
Vinod Koul, Sanyog Kale, Shreyas Nc and Hardik Shah.

Signed-off-by: Bard Liao 
Signed-off-by: Rander Wang 
Signed-off-by: Pierre-Louis Bossart 
Link: https://lore.kernel.org/r/20200115000844.14695-10-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul

Merge branch 'topic/sdw_intel' into next

2020-01-16T12:02:43+00:00

soundwire: intel: report slave_ids for each link to SOF driver

2020-01-16T12:01:22+00:00

The existing link_mask flag is no longer sufficient to detect the
hardware and identify which topology file and a machine driver to load.

By reporting the slave_ids exposed in ACPI tables, the parent SOF
driver will be able to compare against a set of static configurations.

This patch only adds the interface change, the functionality is added
in future patches.

Signed-off-by: Bard Liao 
Signed-off-by: Pierre-Louis Bossart 
Link: https://lore.kernel.org/r/20200110220016.30887-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: bus: fix device number leak on errors

2020-01-14T06:35:52+00:00

If the programming of the dev_number fails due to an IO error, a new
device_number will be assigned, resulting in a leak.

Make sure we only assign a device_number once per Slave device.

Signed-off-by: Pierre-Louis Bossart 
Link: https://lore.kernel.org/r/20200113225637.17313-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel: add clock stop quirks

2019-12-12T03:47:07+00:00

Due to power rail dependencies, the SoundWire Master driver cannot
make decisions on its own when entering pm runtime suspend.

Add quirk mask for each link, so that the SOF parent driver can inform
the SoundWire master driver of the desired behavior:
a) leave clock on
b) power-off instead of clock stop
c) power-off if all devices cannot generate wakes
d) force bus reset on clock restart

Note that for now the interface with the SOF driver relies on a single
mask for all links. If needed, the interface might be modified at a
later point to provide more freedom. The code at the lower level does
not assume any commonality between links.

Signed-off-by: Pierre-Louis Bossart 
Link: https://lore.kernel.org/r/20191212014507.28050-12-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel: add mutex for shared SHIM register access

2019-12-12T03:47:07+00:00

Some of the Intel SoundWire SHIM registers contain fields for
different links. Without protection, the master drivers for the
different links will access these shared registers, leading to invalid
configurations and timeouts (specifically when changing CPA/SPA
power-related registers and polling for the changes to be applied).

A mutex is added to make sure all rmw access to those registers are
serialized.

Signed-off-by: Pierre-Louis Bossart 
Link: https://lore.kernel.org/r/20191212014507.28050-11-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul