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: Update to use maple tree register cache

The maple tree register cache is based on a much more modern data structure
than the rbtree cache and makes optimisation choices which are probably
more appropriate for modern systems than those made by the rbtree cache. In
v6.5 it has also acquired the ability to generate multi-register writes in
sync operations, bringing performance up to parity with the rbtree cache
there.

Update the cs35l45 driver to use the more modern data structure.

Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230713-asoc-cirrus-maple-v1-3-a62651831735@kernel.org
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: Remove separate namespace for tables

Now tables isn't a separate module, definitely no need to have a
separate namespace for it.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230215105818.3315925-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: Remove separate tables module

There is no reason to have a separate module for the tables file it just
holds regmap callbacks and register patches used by the main part of the
driver. Remove the separate module and merge it into the main driver
module.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230215105818.3315925-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: cs35l45: Make exports namespaced

Use the new EXPORT_SYMBOL_NS_GPL() for exports from the set of
drivers for cs35l45.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220411165929.1302333-1-rf@opensource.cirrus.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>