[Changes for v2: Collected ack on compatible. Addressed Richard's comments pertaining to error handling. Rebased. Switched to dev_err_probe() in few places (added patch #11). Fixed authorship of one of Richard's patches.]
Hi all,
there's a CS42L83 headphone jack codec found in Apple computers (in the recent 'Apple Silicon' ones as well as in earlier models, one example [1]). The part isn't publicly documented, but it appears almost identical to CS42L42, for which we have a driver in kernel. This series adapts the CS42L42 driver to the new part, and makes one change in anticipation of a machine driver for the Apple computers.
Patch 1 adds new compatible to the cs42l42 schema.
Patches 2 to 7 are taken from Richard's recent series [2] adding soundwire support to cs42l42. They are useful refactorings to build on in the later patches, and also this way our work doesn't diverge. (I fixed missing free_irq path in cs42l42_init, did s/Soundwire/SoundWire/ in changelogs, rebased.)
Patch 8 exports some regmap-related symbols from cs42l42.c so they can be used to create cs42l83 regmap in cs42l83-i2c.c later.
Patch 9 is the cs42l83 support proper.
Patch 10 implements 'set_bclk_ratio' on the cs42l42 core. This will be called by the upcoming ASoC machine driver for 'Apple Silicon' Macs. (We have touched on this change to be made in earlier discussion, see [3] and replies.)
Patch 11 brings cs42l42-i2c.c in sync with cs42l83-i2c.c on dev_err_probe() usage.
Best, Martin
[1] https://www.ifixit.com/Teardown/MacBook+Pro+13-Inch+Touch+Bar+2018+Teardown/... [2] https://lore.kernel.org/alsa-devel/20220819125230.42731-1-rf@opensource.cirr... [3] https://lore.kernel.org/asahi/8961DDD2-93FF-4A18-BCA2-90FCE298F517@cutebit.o...
Martin Povišer (5): ASoC: dt-bindings: cs42l42: Add 'cs42l83' compatible ASoC: cs42l42: Export regmap elements to core namespace ASoC: cs42l83: Extend CS42L42 support to new part ASoC: cs42l42: Implement 'set_bclk_ratio' ASoC: cs42l42: Switch to dev_err_probe() helper
Richard Fitzgerald (6): ASoC: cs42l42: Add bitclock frequency argument to cs42l42_pll_config() ASoC: cs42l42: Use cs42l42->dev instead of &i2c_client->dev ASoC: cs42l42: Split probe() and remove() into stages ASoC: cs42l42: Split cs42l42_resume into two functions ASoC: cs42l42: Pass component and dai defs into common probe ASoC: cs42l42: Split I2C identity into separate module
.../bindings/sound/cirrus,cs42l42.yaml | 1 + MAINTAINERS | 1 + include/sound/cs42l42.h | 1 + sound/soc/codecs/Kconfig | 15 +- sound/soc/codecs/Makefile | 6 +- sound/soc/codecs/cs42l42-i2c.c | 106 +++++++ sound/soc/codecs/cs42l42.c | 259 +++++++++--------- sound/soc/codecs/cs42l42.h | 24 +- sound/soc/codecs/cs42l83-i2c.c | 242 ++++++++++++++++ 9 files changed, 529 insertions(+), 126 deletions(-) create mode 100644 sound/soc/codecs/cs42l42-i2c.c create mode 100644 sound/soc/codecs/cs42l83-i2c.c