linux-kernel - [RESEND PATCH v2 0/9] soundwire/regmap: use _no

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Message-Id: <20210122070634.12825-1-yung-chuan.liao@linux.intel.com>
Date:   Fri, 22 Jan 2021 15:06:25 +0800
From:   Bard Liao <yung-chuan.liao@...ux.intel.com>
To:     alsa-devel@...a-project.org, vkoul@...nel.org
Cc:     vinod.koul@...aro.org, linux-kernel@...r.kernel.org, tiwai@...e.de,
        broonie@...nel.org, gregkh@...uxfoundation.org, jank@...ence.com,
        srinivas.kandagatla@...aro.org, rander.wang@...ux.intel.com,
        ranjani.sridharan@...ux.intel.com, hui.wang@...onical.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        bard.liao@...el.com
Subject: [RESEND PATCH v2 0/9] soundwire/regmap: use _no_pm routines

When a Slave device is resumed, it may resume the bus and restart the
enumeration. And Slave drivers will wait for initialization_complete
complete in their resume function, however initialization_complete will
complete after sdw_update_slave_status function is finished and codec
driver usually call some IO functions in the update_status callback
function.
It will become a deadlock if we use regular read/write routines during
the resuming process.

This series touches both soundwire and regmap trees.
commit fb5103f9d6ce ("regmap/SoundWire: sdw: add support for SoundWire 1.2 MBQ")
is needed for soundwire tree to complie.
On the other hands,
commit 6e06a85556f9 ("soundwire: bus: add comments to explain interrupt loop filter")
to
commit 47b8520997a8 ("soundwire: bus: only clear valid DPN interrupts")
are needed for regmap tree.

v2:
 - Separate commits according to maintainer's comments.

Bard Liao (4):
  soundwire: export sdw_write/read_no_pm functions
  regmap: sdw: use _no_pm functions in regmap_read/write
  regmap: sdw: use no_pm routines for SoundWire 1.2 MBQ
  regmap: sdw-mbq: use MODULE_LICENSE("GPL")

Pierre-Louis Bossart (5):
  soundwire: bus: use sdw_update_no_pm when initializing a device
  soundwire: bus: use sdw_write_no_pm when setting the bus scale
    registers
  soundwire: bus: use no_pm IO routines for all interrupt handling
  soundwire: bus: fix confusion on device used by pm_runtime
  soundwire: bus: clarify dev_err/dbg device references

 drivers/base/regmap/regmap-sdw-mbq.c |  10 +-
 drivers/base/regmap/regmap-sdw.c     |   4 +-
 drivers/soundwire/bus.c              | 136 +++++++++++++++------------
 include/linux/soundwire/sdw.h        |   2 +
 4 files changed, 85 insertions(+), 67 deletions(-)

-- 
2.17.1