linux-kernel - [RFC PATCH v2 0/3] Add support for Legion 7 16ACHg6 laptop

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Date:   Wed, 20 Oct 2021 09:59:41 +0100
From:   Lucas Tanure <tanureal@...nsource.cirrus.com>
To:     Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        "Jaroslav Kysela" <perex@...ex.cz>, Len Brown <lenb@...nel.org>,
        David Rhodes <david.rhodes@...rus.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        "Rafael J . Wysocki" <rafael@...nel.org>
CC:     <alsa-devel@...a-project.org>, <linux-acpi@...r.kernel.org>,
        <patches@...nsource.cirrus.com>, <linux-kernel@...r.kernel.org>,
        Lucas Tanure <tanureal@...nsource.cirrus.com>
Subject: [RFC PATCH v2 0/3] Add support for Legion 7 16ACHg6 laptop

Hi,

I would like to get some guidance about this solution to
support the 16ACHg6 laptop.

Hardware:
 - The 16ACHg6 laptop has two CS35L41 amplifiers, connected
to Realtek ALC287 by an I2S bus and by and direct I2C to the CPU.
 - The ALC287 codec is connected to the CPU by an HDA bus.
 - The CS35L41 has a DSP which will require firmware to be loaded.

Architecture:
 - To load the firmware for CS35L41, this solution will require
the wm_adsp library, which requires regmap, header definitions and
register tables.
 - The HDA machine driver will find the registered ASoC by its
 dai name.
 - To minimize the duplication of the code, the HDA will call
 snd_soc_dai_ops from the ASoC driver.

Notes:
 - This is a work in progress, so the code is not functional, its
only intent is to demonstrate the overall solution

Changes from V1:

 - Split into multiple patches, separating ACPI, ASoC and HDA patches
 - Removed CS35L41 exported functions, moved code to snd_soc_dai_ops
 - Patch realtek uses dai ops functions

Lucas Tanure (3):
  sound: cs35l41: Allow HDA systems to use CS35l41 ASoC driver
  ALSA: hda/realtek: Add support for Legion 7 16ACHg6 laptop Speakers
  ACPI / scan: Create platform device for INT3515 ACPI nodes

 drivers/acpi/scan.c                          |   1 +
 drivers/platform/x86/i2c-multi-instantiate.c |   7 +
 include/sound/cs35l41.h                      |   1 +
 sound/pci/hda/patch_realtek.c                | 109 ++++++++++++++-
 sound/soc/codecs/cs35l41.c                   | 139 +++++++++++++++++--
 sound/soc/codecs/cs35l41.h                   |   1 +
 6 files changed, 249 insertions(+), 9 deletions(-)

-- 
2.33.1