linux-kernel - [PATCH 0/9] ASoC: apple: mca: support simultaneous I2S capture on the frontend

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Message-Id: <20250518-mca-fixes-v1-0-ee1015a695f6@gmail.com>
Date: Sun, 18 May 2025 20:50:45 +1000
From: James Calligeros <jcalligeros99@...il.com>
To: Martin Povišer <povik+lin@...ebit.org>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc: asahi@...ts.linux.dev, linux-sound@...r.kernel.org, 
 linux-kernel@...r.kernel.org, James Calligeros <jcalligeros99@...il.com>, 
 Hector Martin <marcan@...can.st>
Subject: [PATCH 0/9] ASoC: apple: mca: support simultaneous I2S capture on
 the frontend

Hi all,

This series introduces a number of changes to the ASoC driver
for the Apple MCA peripheral to enable support for bidirectional
I2S. This is achieved by allowing frontends to act as clock consumers
and logically ORing data input lines when multiple backends are linked
to a frontend.

This allows the Texas Instruments speaker amps used on Apple Silicon Macs
(Apple-specific revisions of TAS2764 and TAS2770) to send their IVSENSE
data back to the SoC. Since these amps do not have any sort of integrated
speaker protection logic, we must use the IVSENSE data and the Thiele/Small
Parameters of the attached speaker(s) to implement our own in software.

---
Hector Martin (3):
      ASoC: apple: mca: Move clock shutdown to backend shutdown
      ASoC: apple: mca: Do not mark clocks in use for non-providers
      ASoC: apple: mca: Add delay after configuring clock

James Calligeros (1):
      ASoC: apple: mca: use readx_poll_timeout to check for cluster reset

Martin Povišer (5):
      ASoC: apple: mca: Constrain channels according to TDM mask
      ASoC: apple: mca: Separate data & clock port setup
      ASoC: apple: mca: Factor out mca_be_get_fe
      ASoC: apple: mca: Support FEs being clock consumers
      ASoC: apple: mca: Support capture on multiples BEs

 sound/soc/apple/mca.c | 336 +++++++++++++++++--------
 1 file changed, 234 insertions(+), 102 deletions(-)
---
base-commit: 7163ff8cf6a2ee6b6861f0c521885e83a97145f9
change-id: 20250517-mca-fixes-666094666fa0

Best regards,
-- 
James Calligeros <jcalligeros99@...il.com>