mfd: wcd934x: 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 wcd934x to use the more modern data structure.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230912-mfd-wcd934x-maple-v2-1-292a154113e3@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>

mfd: wcd934x: Simplify with dev_err_probe()

Use dev_err_probe() to simplify code, save a few LoC and be consistent
with error codes handling in messages.
It also filters -EPROBE_DEFER that can be returned by devm_clk_get().

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/73fdc6ecf619f80fad126abca11fb579d3d87f64.1684565021.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Lee Jones <lee@kernel.org>

mfd: wcd934x: Fix an error handling path in wcd934x_slim_probe()

If devm_gpiod_get_optional() fails, some resources need to be released, as
already done in the .remove() function.

While at it, remove the unneeded error code from a dev_err_probe() call.
It is already added in a human readable way by dev_err_probe() itself.

Fixes: 6a0ee2a61a31 ("mfd: wcd934x: Replace legacy gpio interface for gpiod")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/02d8447f6d1df52cc8357aae698152e9a9be67c6.1684565021.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Lee Jones <lee@kernel.org>

mfd: wcd934x: Convert irq chip to config regs

Type registers are deprecated and will eventually be removed from
regmap-irq. The same functionality can be replicated with config
registers.

Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221112151835.39059-19-aidanmacdonald.0x0@gmail.com

mfd: wcd934x: Replace legacy gpio interface for gpiod

Considering the current transition of the GPIO subsystem, remove all
dependencies of the legacy GPIO interface (linux/gpio.h and linux
/of_gpio.h) and replace it with the descriptor-based GPIO approach.

Signed-off-by: Maíra Canal <maira.canal@usp.br>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/YXDEBCiSnXYRQPXt@fedora

mfd: wcd934x: Add additional interrupts required for MBHC support

WCD934x supports Multi Button Headset control which enable headset detection
along with headset button detection.

This patch adds interrupts required for MBHC functionality.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

mfd: wcd934x: Add macro for adding new interrupts

Currently only two interrupts supported is added in wcd934x interrupt controller,
however if we are adding more interrupts the file will become too much unreadable.

So add a macro to make adding new interrupts easy and also convert existing
slim and soundwire interrupts to use it.
This is in preparation to enable Multi Button Headset Control support on this
codec.

WCD934x supports Multi Button Headset control which enable headset detection
along with headset button detection.

This patch adds interrupts required for MBHC functionality.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

mfd: wcd934x: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and also it prints the error value.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

mfd: wcd934x: Drop kfree for memory allocated with devm_kzalloc

It's not necessary to free memory allocated with devm_kzalloc
and using kfree leads to a double free.

Fixes: 6ac7e4d7ad70 ("mfd: wcd934x: Add support to wcd9340/wcd9341 codec")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

mfd: wcd934x: Add support to wcd9340/wcd9341 codec

Qualcomm WCD9340/WCD9341 Codec is a standalone Hi-Fi audio codec IC.

This codec has integrated SoundWire controller, pin controller and
interrupt controller.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>