Still have a manual free in there for some realloc()ed memory as there's
no devm version of that.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Allow systems to override the default microphone detection rates using
platform data in case the settings are not suitable (eg, due to an
unusually noisy jack).
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

We don't need to rerun DAPM if the clock source is the same but we do
need to adjust the microphone detection rate in case we are moving from
an audio to a non-audio rate.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The WM1811A features an advanced low power accessory detection subsystem
which allows the device to be maintained in a very low power state while
the system is idle without sacrificing any accessory detection features.

Implement software support for this, automatically managing the power
configuration of the device depending on the detected accessory.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

More specific and avoids confusion with a following change.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The WM8958 and WM1811 support detecting a range of buttons. Allow the
user to provide platform data enabling more of these levels without
having to write a custom detection handler.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Saves a little power.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

This will support refactoring to make use of the regmap API more directly
in the core.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

All the other machine drivers for non-default configurations are named
after the relevant audio module so do so for Tobermory also.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Actively manage the detection rate for microphones with WM8958, providing
improved power consumption and maximising the benefit from the hardware
debounce.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

When we don't have any active audio we can put the microphone biases into
bypass mode to save power at the expense of performance.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

We always store the register address as __iomem but pass it around as a
plain void * which upsets sparse.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Ensure SYSCLK is enabled while running accessory detection on WM8958.
It is always required so there is no sense in requiring machine drivers
to individually do this.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Add support for loading the SigmaDSP firmware using regmap. This allows us
to transparently use SPI or I2C as the transport protocol on devices which
support them.

For now we keep the old I2C support since we have one user of this which is not
straight forward to convert to regmap, due to variable length registers.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Move the structs and functions only used by SigmaDSP firmware loader itself
from the header to the C file.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Provide some error messages when loading the firmware fails, so it is possible
to diagnose the reason for the failure.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

It has been pointed out previously, that the firmware subsystem is not the right
place for the SigmaDSP firmware loader. Furthermore the SigmaDSP is currently
only used in audio products and we are aiming for better integration into the
ASoC framework in the future, with support for ALSA controls for firmware
parameters and support dynamic power management as well. So the natural choice
for the SigmaDSP firmware loader is the ASoC subsystem.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Currently the SigmaDSP firmware loader only works correctly on little-endian
systems. Fix this by using the proper endianess conversion functions.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org

The firmware header is not part of the CRC, so skip it. Otherwise the firmware
will be rejected due to non-matching CRCs.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org

The SigmaDSP firmware loader currently does not perform enough boundary size
checks when processing the firmware. As a result it is possible that a
malformed firmware can cause an out of bounds memory access.

This patch adds checks which ensure that both the action header and the payload
are completely inside the firmware data boundaries before processing them.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org

What we want is to clear BIT[5:4](PCM_MODE_MASK) and BIT[3](PCM_BIT_ORDER) bits,
but current code clears BIT[2:0].
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NBrian Austin <brian.austin@cirrus.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Use the module_platform_driver() macro which makes
the code smaller and a bit simpler.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Based on initial data.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NBrian Austin <brian.austin@cirrus.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Use the module_platform_driver() macro which makes
the code smaller and a bit simpler.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The Littlemill audio card supports a number of pluggable miniboards,
normally for the WM8994 family of devices. As all these devices look
mostly the same from an external configuration point of view and are
runtime enumerable we can write a standard machine driver which will
work out of the box with any of them. Start doing that with the bare
bones of a driver, only supporting AIF1.

Future patches will flesh this out to be more fully featured.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

We can reduce the code size here a bit by using snd_soc_update_bits instead of
open-coding the read-modify-write cycle. The conversion done in this patch is
not completely straightforward and some minor code restructuring has been
incorporated to further reduce the code size.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Add a DAPM supply widget for the internal sysclk, so it can be disabled
automatically when not needed.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

DAPM route controls only take effect on paths where the sink is a mixer or a
mux, furthermore the control must be a control assigned to the mixer or mux.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Factor out some boilerplate code.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NTimur Tabi <timur@freescale.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>