ASoC: aw88399: extract shared device library

Extract the device-level functions from aw88399.c into a new shared
library module (aw88399-lib.c) with a shared header at
include/sound/aw88399.h, following the pattern established by CS35L41
(cs35l41-lib.c / include/sound/cs35l41.h) for chips that need both
ASoC and HDA drivers.

The shared header at include/sound/aw88399.h contains the register
definitions, bit-field masks, hardware constants, device enums, the
struct aw88399 definition, and the library function declarations.
The ASoC-private header at sound/soc/codecs/aw88399.h is reduced to
ASoC-specific definitions (PCM formats/rates, ALSA kcontrol helpers,
calibration constants) and includes the shared header.

The library contains the chip initialization, firmware loading,
playback start/stop sequences, and all their internal dependencies
(PLL checks, DSP management, volume control, calibration, CRC
verification, etc.). The ASoC codec driver retains the ALSA controls,
DAPM widgets, codec probe/remove, calibration service, and I2C bus
driver registration.

A new Kconfig symbol SND_SOC_AW88399_LIB is introduced.
SND_SOC_AW88399 (the existing ASoC codec) selects it, ensuring no
change for current users. The HDA side codec driver (introduced
later in this series) selects the library without pulling in the
full ASoC codec module. This avoids a build-time dependency on the
full ASoC driver and follows the established pattern used by CS35L41
(SND_SOC_CS35L41_LIB) for chips with both ASoC and HDA drivers.

Some library functions (DSP control, volume setting, mute,
calibration updates, profile management, and status helpers) are
used internally by the library's start/stop sequences but are also
called directly by the ASoC driver's remaining code.
These are exported from the library so the ASoC module can access them.

This is a pure code movement with no functional changes. The moved
functions are identical to their originals in aw88399.c.

Tested-by: Nadim Kobeissi <nadim@symbolic.software>
Tested-by: Xia Yun'an <imitoy@imitoy.top>
Tested-by: Munzir Taha <munzirtaha@gmail.com>
Signed-off-by: Marco Giunta <marco_giunta@outlook.it>
Link: https://patch.msgid.link/DS7PR19MB772415C485FAF74297673FD7FCC62@DS7PR19MB7724.namprd19.prod.outlook.com
Signed-off-by: Mark Brown <broonie@kernel.org>

0 files changed, 0 insertions, 0 deletions