ASoC: cs35l45: Connect DSP to the monitoring signals

Link VMON, IMON, TEMPMON, VDD_BSTMON and VDD_BATTMON
to DSP1. The CSPL firmware uses them for the speaker calibration
and monitoring.

Signed-off-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230831162042.471801-3-vkarpovi@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: Analog PCM Volume and Amplifier Mode controls

Adds "Analog PCM Volume" control with supported values
0 = 10dB,1 = 13dB,2 = 16dB and 3 = 19dB.
The amplifier can operate either in Speaker Mode or Receiver Mode
as configured by the user. Speaker Mode has four gain options
to support maximum amplifier output amplitude for loud
speaker application. Receiver Mode has further optimized
noise performance while maintaining sufficient output to support
phone receiver application. While configured in Receiver Mode,
the analog PCM Volume control is disabled and
the analog gain is fixed to 1dB.

Signed-off-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230831162042.471801-2-vkarpovi@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: Relicense to GPL only

Cirrus never intended to upstream dual licensed code, convert to
GPL only.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230510092534.3919120-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: Hibernation support

Adds support for a low-power Hibernation State.
Add support for a low-power hibernation state for the DSP. In
this state the DSP RAM contents are maintained, such that
firmware does not need to be re-downloaded, but the rest of the
chip's register state is lost.
Entry to this state is achieved via the register interface
(either by an external driver using the control port, or the
programmable DSP). Exit from this state is triggered by activity
on device GPIO pins, intended SPI transaction, or I2C
transaction with intended slave address.

Signed-off-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Link: https://lore.kernel.org/r/167933511185.26.10641185496218226278@mailman-core.alsa-project.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: DSP Support

The CS35L45 digital core incorporates one programmable DSP block,
capable of running a wide range of audio enhancement and speaker
and battery protection functions.

Signed-off-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Link: https://lore.kernel.org/r/167933510679.26.5992985447093367768@mailman-core.alsa-project.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: IRQ support

Adds IRQ handlers

Signed-off-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Link: https://lore.kernel.org/r/167933510218.26.11092784685990338045@mailman-core.alsa-project.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: Support for GPIO pins configuration.

Adds device tree configuration for cs35l45 GPIOs

Signed-off-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230315154722.3911463-1-vkarpovi@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: Make cs35l45_remove() return void

cs35l45_remove() always returns zero. Make it return no value which
makes it easier to see in the callers that there is no error to handle.

Also the return value of i2c driver remove callbacks is ignored anyway.
This prepares making i2c remove callbacks return void, too.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220520173349.774366-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: typo in argument definition

cppcheck warning:

sound/soc/codecs/cs35l45-tables.c:36:49: style:inconclusive: Function
'cs35l45_apply_patch' argument 1 names different: declaration
'cs43l45' definition 'cs35l45'. [funcArgNamesDifferent]

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20220520211719.607543-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: Add driver for Cirrus Logic CS35L45 Smart Amp

The CS35L45 is a 15 V Boosted Mono Class D Amplifier with DSP
Speaker Protection and Adaptive Battery Management.

This initial driver provides standard non-boosted audio operation
without the DSP.

Signed-off-by: James Schulman <james.schulman@cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220405135419.1230088-6-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>