[v3,00/20] ASoC: tas27{64,70}: improve support for Apple codec variants

Message

James Calligeros Feb. 27, 2025, 12:07 p.m. UTC

Hi all,

This series introduces a number of changes to the drivers for
the Texas Instruments TAS2764 and TAS2770 amplifiers in order to
introduce (and improve in the case of TAS2770) support for the
variants of these amps found in Apple Silicon Macs.

Apple's variant of TAS2764 is known as SN012776, and as always with
Apple is a subtly incompatible variant with a number of quirks. It
is not publicly available. The TAS2770 variant is known as TAS5770L,
and does not require incompatible handling.

Much as with the Cirrus codec patches, I do not
expect that we will get any official acknowledgement that these parts
exist from TI, however I would be delighted to be proven wrong.

This series has been living in the downstream Asahi kernel tree[1]
for over two years, and has been tested by many thousands of users
by this point[2].

[1] https://github.com/AsahiLinux/linux/tree/asahi-wip
[2] https://stats.asahilinux.org/

---
Changes in v3:
- Add Rob's Acked-by to Devicetree compatible additions
- Dropped cherry-picked patches
- Droped abuse of regulator API
- Droped bespoke sysfs interface
- Rationalised temperature reading for hwmon interface
- Set SN012776 device ID with OF match data
- Changed probe ops reliant on device ID to case/switch statement
- Added documentation for new Devicetree properties
- Improved a number of poor quality commit messages
- Documented behaviour of die temperature ADC
- Link to v2: https://lore.kernel.org/r/[e-mail]

Changes in v2:
- Changed author field of patch to match Martin's Signed-off-by
- Added Neal's Reviewed-by to reviewed patches
- Moved fixes to existing code to the top of the series
- Removed tas2764's explicit dependency on OF
- Removed complicated single-use tas2764 quirks macro and replaced with
  if block
- Added hwmon interface for codec die temp
- Fixed a malformed commit message
- Link to v1: https://lore.kernel.org/r/[e-mail]

---
Hector Martin (5):
      ASoC: tas2764: Enable main IRQs
      ASoC: tas2770: Power cycle amp on ISENSE/VSENSE change
      ASoC: tas2770: Add zero-fill and pull-down controls
      ASoC: tas2770: Support setting the PDM TX slot
      ASoC: tas2770: Set the SDOUT polarity correctly

James Calligeros (6):
      ASoC: dt-bindings: tas27xx: add compatible for SN012776
      ASoC: dt-bindings: tas2770: add compatible for TAS5770L
      ASoC: dt-bindings: tas27xx: document ti,sdout-force-zero-mask property
      ASoC: tas2770: expose die temp to hwmon
      ASoC: tas2764: expose die temp to hwmon
      ASoC: dt-bindings: tas2770: add flags for SDOUT pulldown and zero-fill

Martin Povišer (9):
      ASoC: tas2764: Extend driver to SN012776
      ASoC: tas2764: Add control concerning overcurrent events
      ASoC: tas2770: Factor out set_ivsense_slots
      ASoC: tas2770: Fix and redo I/V sense TDM slot setting logic
      ASoC: tas2764: Reinit cache on part reset
      ASoC: tas2764: Configure zeroing of SDOUT slots
      ASoC: tas2764: Apply Apple quirks
      ASoC: tas2764: Raise regmap range maximum
      ASoC: tas2764: Crop SDOUT zero-out mask based on BCLK ratio

 .../bindings/sound/ti,tas2770.yaml       |  13 ++
 .../bindings/sound/ti,tas27xx.yaml       |   5 +
 sound/soc/codecs/tas2764-quirks.h        | 180 +++++++++++++++++
 sound/soc/codecs/tas2764.c               | 258 ++++++++++++++++++++++++-
 sound/soc/codecs/tas2764.h               |  21 ++
 sound/soc/codecs/tas2770.c               | 240 ++++++++++++++++++++---
 sound/soc/codecs/tas2770.h               |  19 ++
 7 files changed, 706 insertions(+), 30 deletions(-)
---
base-commit: 32adeb9806ac5bf928514b62e6145bba12dfd71a
change-id: 20250214-apple-codec-changes-6e656dc1e24d

Best regards,