ASoC: Explicitly include correct DT includes

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it was merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev> # for at91
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231006-dt-asoc-header-cleanups-v3-1-13a4f0f7fee6@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: merge DAI call back functions into ops

ALSA SoC merges DAI call backs into .ops.
This patch merge these into one.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/875y5pb0sr.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: merge DAI call back functions into ops

ALSA SoC merges DAI call backs into .ops.
This patch merge these into one.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/875y5pb0sr.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: sun4i-i2s: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20230315150745.67084-142-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: Migrate to new style legacy DAI naming flag

Change the legacy DAI naming flag from opting in to the new scheme
(non_legacy_dai_naming), to opting out of it (legacy_dai_naming).
These drivers appear to be on the CPU side of the DAI link and
currently uses the legacy naming, so add the new flag.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220623125250.2355471-15-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: sun4i-i2s: update kernel-doc

Remove warnings

sound/soc/sunxi/sun4i-i2s.c:205: warning: Function parameter or member
'num_din_pins' not described in 'sun4i_i2s_quirks'

sound/soc/sunxi/sun4i-i2s.c:205: warning: Function parameter or member
'num_dout_pins' not described in 'sun4i_i2s_quirks'

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220616220802.136282-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: Rename set_fmt_new back to set_fmt

Now the core has been migrated across to the new direct clock
specification we can move the drivers back to the normal set_fmt
callback.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220519154318.2153729-50-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: Update to use set_fmt_new callback

As part of updating the core to directly tell drivers if they are clock
provider or consumer update these CPU side drivers to use the new direct
callback.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220519154318.2153729-23-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add support for the R329/D1 variant

This adds a new set of quirks to set the right RX channel map. Since
that is the only change to the register layout, reuse the H6 regmap
config by extending its last register. R329 support is added by its
compatible string. D1 uses R329 as its fallback compatible, so no
additional code change is needed for it.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220203020116.12279-4-samuel@sholland.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Update registers for more channels

H6 expands the number of channels in each direction to 16, so the slot
number fields need to be expanded from 3 to 4 bits each.

R329/D1 expand that further by allowing each of the 16 slots to map to
any of 4 data pins. For TX, the configuration of each pin is
independent, so there is a copy of the mapping registers for each pin.
For RX, each of the 16 slots can map to only one pin, so the registers
were changed to add the pin selection inline with the channel mapping.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220203020116.12279-3-samuel@sholland.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Use devm_platform_get_and_ioremap_resource()

Use devm_platform_get_and_ioremap_resource() to simplify
code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210617045012.1119650-3-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: drop unneeded snd_soc_dai_set_drvdata

snd_soc_dai_set_drvdata is not needed when the set data comes from
snd_soc_dai_get_drvdata or dev_get_drvdata. The problem was fixed
usingthe following semantic patch: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,y,e;
@@
x = dev_get_drvdata(y->dev)
... when != x = e
- snd_soc_dai_set_drvdata(y,x);

@@
expression x,y,e;
@@
x = snd_soc_dai_get_drvdata(y)
... when != x = e
- snd_soc_dai_set_drvdata(y,x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/20210213101907.1318496-4-Julia.Lawall@inria.fr
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: sync parameter naming (rate/sample_bits)

This patch syncs naming rule.

- xxx_rates;
+ xxx_rate;

- xxx_samplebits;
+ xxx_sample_bits;

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87turin6uk.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: fix coding-style for callback definition

Checkpatch script produces warning:
WARNING: function definition argument 'const struct sun4i_i2s *'
should also have an identifier name.

Let's fix this by adding identifier name to get_bclk_parent_rate()
and set_fmt() callback definition.

Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-10-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix setting of FIFO modes

Because SUN4I_I2S_FIFO_CTRL_REG is volatile, writes done while the
regmap is cache-only are ignored. To work around this, move the
configuration to a callback that runs while the ASoC core has a
runtime PM reference to the device.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-9-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix sun8i volatile regs

The FIFO TX reg is volatile and sun8i i2s register
mapping is different from sun4i.

Even if in this case it's doesn't create an issue,
Avoid setting some regs that are undefined in sun8i.

Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-8-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add 20 and 24 bit support

Extend the functionality of the driver to include support of 20 and
24 bits per sample.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-7-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Set sign extend sample

On the newer SoCs such as the H3 and A64 this is set by default
to transfer a 0 after each sample in each slot. However the A10
and A20 SoCs that this driver was developed on had a default
setting where it padded the audio gain with zeros.

This isn't a problem while we have only support for 16bit audio
but with larger sample resolution rates in the pipeline then SEXT
bits should be cleared so that they also pad at the LSB. Without
this the audio gets distorted.

Set sign extend sample for all the sunxi generations even if they
are not affected. This will keep consistency and avoid relying on
default.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-6-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Change get_sr() and get_wss() to be more explicit

We are actually using a complex formula to just return a bunch of
simple values. Also this formula is wrong for sun4i when calling
get_wss() the function return 4 instead of 3.

Replace this with a simpler switch case.

Also drop the i2s params which is unused and return a simple int as
returning an error code could be out of range for an s8 and there is
no optim to return a s8 here.

Fixes: 619c15f7fac9 ("ASoC: sun4i-i2s: Change SR and WSS computation")
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-5-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add support for H6 I2S

H6 I2S is very similar to that in H3, except it supports up to 16
channels.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-4-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Change set_chan_cfg() params

As slots and slot_width can be set manually using set_tdm().
These values are then kept in sun4i_i2s struct.
So we need to check if these values are set or not.

This is not done actually and will trigger a bug.
For example, if we set to the simple soundcard in the device-tree
dai-tdm-slot-width = <32> and then start a stream using S16_LE,
currently we would calculate BCLK for 32-bit slots, but program
lrck_period for 16-bit slots, making the sample rate double what we
expected.

To fix this, we need to check if these values are set or not but as
this logic is already done by the caller. Avoid duplicating this
logic and just pass the required values as params to set_chan_cfg().

Suggested-by: Samuel Holland <samuel@sholland.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-3-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix lrck_period computation for I2S justified mode

Left and Right justified mode are computed using the same formula
as DSP_A and DSP_B mode.
Which is wrong and the user manual explicitly says:

LRCK_PERDIOD:
PCM Mode: Number of BCLKs within (Left + Right) channel width.
I2S/Left-Justified/Right-Justified Mode: Number of BCLKs within each
individual channel width(Left or Right)

Fix this by using the same formula as the I2S mode.

Fixes: 7ae7834ec446 ("ASoC: sun4i-i2s: Add support for DSP formats")
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20201030144648.397824-2-peron.clem@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: sun4i-i2s: add missing clock and format arguments in kernel-doc

Fix W=1 warnings - missing fields in description

sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or
member 'bclk_dividers' not described in 'sun4i_i2s_quirks'
sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or member
'num_bclk_dividers' not described in 'sun4i_i2s_quirks'
sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or member
'mclk_dividers' not described in 'sun4i_i2s_quirks'
sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or member
'num_mclk_dividers' not described in 'sun4i_i2s_quirks'
sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or member
'get_bclk_parent_rate' not described in 'sun4i_i2s_quirks'
sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or member
'get_sr' not described in 'sun4i_i2s_quirks'
sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or member
'get_wss' not described in 'sun4i_i2s_quirks'
sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or member
'set_chan_cfg' not described in 'sun4i_i2s_quirks'
sound/soc/sunxi/sun4i-i2s.c:160: warning: Function parameter or member
'set_fmt' not described in 'sun4i_i2s_quirks'

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Andrea Venturi <be17068@iperbole.bo.it>
Link: https://lore.kernel.org/r/20200709162328.259586-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i: Revert A83t description

The last set of reworks included some fixes to change the A83t behaviour
and "fix" it.

It turns out that the controller described in the datasheet and the one
supported here are not the same, yet the A83t has the two of them, and the
one supported in the driver wasn't the one described in the datasheet.

Fix this by reintroducing the proper quirks.

Fixes: 69e450e50ca6 ("ASoC: sun4i-i2s: Fix the LRCK period on A83t")
Fixes: bf943d527987 ("ASoC: sun4i-i2s: Fix MCLK Enable bit offset on A83t")
Fixes: 2e04fc4dbf50 ("ASoC: sun4i-i2s: Fix WSS and SR fields for the A83t")
Fixes: 515fcfbc7736 ("ASoC: sun4i-i2s: Fix LRCK and BCLK polarity offsets on newer SoCs")
Fixes: c1d3a921d72b ("ASoC: sun4i-i2s: Fix the MCLK and BCLK dividers on newer SoCs")
Fixes: fb19739d7f68 ("ASoC: sun4i-i2s: Use module clock as BCLK parent on newer SoCs")
Fixes: 71137bcd0a9a ("ASoC: sun4i-i2s: Move the format configuration to a callback")
Fixes: d70be625f25a ("ASoC: sun4i-i2s: Move the channel configuration to a callback")
Reported-by: Chen-Yu Tsai <wens@csie.org>
Tested-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/20190827123131.29129-2-mripard@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: Revert initial A83t support

This reverts commit 3e9acd7ac6933c (ASoC: sun4i-i2s: Remove
duplicated quirks structure").

It turns out that while one I2S controller is described in the A83t
datasheet, the driver supports another, undocumented, one that has been
inherited from the older SoCs, while the documented one uses the new
design.

Fixes: 3e9acd7ac693 ("ASoC: sun4i-i2s: Remove duplicated quirks structure")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/20190827093206.17919-1-mripard@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add support for DSP formats

In addition to the I2S format, the controller also supports the DSP_*
formats.

This requires some extra care on the LRCK period calculation, since the
controller, with the PCM formats, require that the value set is no longer
the periods of LRCK for a single channel, but for all of them.

Let's add the code to deal with this, and support the DSP_A and DSP_B
formats.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/5562db1ac8759f12b1b87c3258223eed629ef771.1566392800.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Replace call to params_width by local variable

The sun4i_i2s_hw_params function already has a variable holding the value
returned by params_width, so let's just use that variable instead of
calling params_width multiple times.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/f85a1c1e014080a4bbc3abd19bc8fdcb86f0981a.1566392800.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Use the actual format width instead of an hardcoded one

The LRCK period field in the FMT0 register holds the number of LRCK period
for one channel in I2S mode.

This has been hardcoded to 32, while it really should be the physical width
of the format, which creates an improper clock when using a 16bit format,
with the i2s controller as LRCK master.

Fixes: 7d2993811a1e ("ASoC: sun4i-i2s: Add support for H3")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/f08a0c3605cd1d79752b38d704690190183f7865.1566392800.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Use the physical / slot width for the clocks

The clock dividers function has been using the word size to compute the
clock rate at which it's supposed to be running, but the proper formula
would be to use the physical width and / or slot width in TDM.

It doesn't make any difference at the moment since all the formats
supported have the same sample width and physical width, but it's not going
to last forever.

Fixes: 7d2993811a1e ("ASoC: sun4i-i2s: Add support for H3")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/41a359d9885f397e066816961e5e3236afcbe0a1.1566392800.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add support for TDM slots

The i2s controller supports TDM, for up to 8 slots. Let's support the TDM
API.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/26392af30b3e7b31ee48d5b867d45be8675db046.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Support more channels

We've been limited to 2 channels in the driver while the controller
supports from 1 to 8 channels, in both capture and playback. let's remove
the hardcoded checks and numbers, and extend the range of channel numbers
we can use.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/27d9de5cd56f3a544851b8cd8af08bf836d19637.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Pass the channels number as an argument

The channels number have been hardcoded to 2 so far, while the controller
supports more than that.

Remove the instance where it has been hardcoded to compute the BCLK
divider, and pass it through as an argument to ease further support of more
channels.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/48887cf7abfaab6597db233b24d7a088a913e48a.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Remove duplicated quirks structure

The A83t and H3 have the same quirks, so it doesn't make sense to duplicate
the quirks structure.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/5ade5de27d23918c5ef30387c23aead951d5ad64.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix the LRCK period on A83t

Unlike the previous SoCs, the A83t, like the newer ones, need the LRCK
bitfield to be set. Let's add it.

Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/6a0ee0bc1375bcb53840d3fb2d2f3d9732b8e57e.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix MCLK Enable bit offset on A83t

The A83t, unlike previous SoCs, has the MCLK enable bit at the 8th bit of
the CLK_DIV register, unlike what is declared in the driver.

Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/43b07f8cd8e0e280c64ce61d57c307678c923e9b.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix WSS and SR fields for the A83t

The A83t has the same bit fields offsets than the A10 and A31, while this
was the first device with the new layout, fix that.

Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/d93f0943cc39d880750daf459a0eeab34c63518e.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix the LRCK polarity

The LRCK polarity "normal" polarity in the I2S/TDM specs and in the
Allwinner datasheet are not the same. In the case where the i2s controller
is being used as the LRCK master, it's pretty clear when looked at under a
scope.

Let's fix this, and add a comment to clear up as much the confusion as
possible.

Fixes: 7d2993811a1e ("ASoC: sun4i-i2s: Add support for H3")
Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/e03fb6b2a916223070b9f18405b0ef117a452ff4.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix LRCK and BCLK polarity offsets on newer SoCs

The LRCK and BCLK polarity offsets on newer SoCs has been
changed, yet the driver didn't take it into account for all of them.

This was taken into account for the H3, but not the A83t. This was handled
using a reg_field for the H3.

However, the value in that field will not be the same, so reg_field is not
adapted in that case. Let's change for proper calls with the regular
values.

Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/9cbdde80a299288878e58225df4d7884e0301348.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: RX and TX counter registers are swapped

The RX and TX counters registers offset have been swapped, fix that.

Fixes: fa7c0d13cb26 ("ASoC: sunxi: Add Allwinner A10 Digital Audio driver")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/8b26477560ad5fd8f69e037b167c5e61de5c26a3.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix the MCLK and BCLK dividers on newer SoCs

From: Marcus Cooper <codekipper@gmail.com>

The clock division dividers have changed between the older (A10/A31) and
newer (H3, A64, etc) SoCs.

While this was addressed through an offset on some SoCs, it was missing
some dividers as well, so the support wasn't perfect. Let's introduce a
pointer in the quirk structure for the divider calculation functions to use
so we can have the proper range now.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
[Maxime: Fix the commit log, use a field in the quirk structure]
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/0e5b4abf06cd3202354315201c6af44caeb20236.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Use module clock as BCLK parent on newer SoCs

On the first generation of Allwinner SoCs (A10-A31), the i2s controller was
using the MCLK as BCLK parent. However, this changed since the introduction
of the A83t and BCLK now uses the module clock as its parent.

Let's introduce a hook to get the parent rate and use that in our divider
calculations.

Fixes: 7d2993811a1e ("ASoC: sun4i-i2s: Add support for H3")
Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/0b6665be216b3bd0e7bc43724818f05f3f8ee881.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Move the format configuration to a callback

The two main generations of our I2S controller require a slightly different
format configuration, mostly because of a quite different register layout
and some additional registers being needed on the newer generation.

This used to be controlled through a bunch of booleans, however this proved
to be quite impractical, especially since a bunch of SoCs forgot to set
those parameters and therefore were broken from that point of view.

Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/dc818644c3e40734e7a97247c994b1fca1c3c047.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Move the channel configuration to a callback

The two main generations of our I2S controller require a slightly different
channel configuration, mostly because of a quite different register layout
and some additional registers being needed on the newer generation.

This used to be controlled through a bunch of booleans, however this proved
to be quite impractical, especially since a bunch of SoCs forgot to set
those parameters and therefore were broken from that point of view.

Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/6414463de69584e8227fa495b13aa5f4798e1f0e.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Rework MCLK divider calculation

The MCLK divider calculation is currently computing the ideal divider using
the oversample rate, the sample rate and the parent rate.

However, since we have access to the frequency is supposed to be running at
already, and as it turns out we're using it to compute the oversample rate,
we can just use the ratio between the parent rate and the MCLK rate to
simplify a bit the formula.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/dcc5deb2eb650758d268bddd20f60ba58856d024.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Replace call to params_channels by local variable

The sun4i_i2s_hw_params already has a variable holding the value returned
by params_channels, so let's just use that variable instead of calling
params_channels multiple times.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/c0faaac69ad40248f24eed3c3b2fa1ccc4a85b70.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Don't use the oversample to calculate BCLK

The BCLK divider should be calculated using the parameters that actually
make the BCLK rate: the number of channels, the sampling rate and the
sample width.

We've been using the oversample_rate previously because in the former SoCs,
the BCLK's parent is MCLK, which in turn is being used to generate the
oversample rate, so we end up with something like this:

oversample = mclk_rate / sampling_rate
bclk_div = oversample / word_size / channels

So, bclk_div = mclk_rate / sampling_rate / word_size / channels.

And this is actually better, since the oversampling ratio only plays a role
because the MCLK is its parent, not because of what BCLK is supposed to be.

Furthermore, that assumption of MCLK being the parent has been broken on
newer SoCs, so let's use the proper formula, and have the parent rate as an
argument.

Fixes: 7d2993811a1e ("ASoC: sun4i-i2s: Add support for H3")
Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Fixes: 66ecce332538 ("ASoC: sun4i-i2s: Add compatibility with A64 codec I2S")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/c3595e3a9788c2ef2dcc30aa3c8c4953bb5cc249.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Switch to devm for PCM register

Since the introduction of the driver, a new managed helper for the
dmaengine PCM registration has been created. Let's use it to simplify a bit
our probe and remove functions.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/606d271187091e858e8c15e20555af0b79798fe1.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Register regmap and PCM before our component

So far the regmap and the dmaengine PCM are registered after our component
has been, which means that our driver isn't properly initialised by then.

Let's fix that.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/67e303f37f141ef73ce9ed47d7f831b63c694424.1566242458.git-series.maxime.ripard@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: Remove dev_err() usage after platform_get_irq()

We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.

// <smpl>
@@
expression ret;
struct platform_device *E;
@@

ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);

if ( \( ret < 0 \| ret <= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// </smpl>

While we're here, remove braces on if statements that only have one
statement (manually).

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: alsa-devel@alsa-project.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20190730181557.90391-50-swboyd@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Incorrect SR and WSS computation

The A64 audio codec uses the original I2S block but the SR and
WSS computation currently assigned is for the newer block.

Fixes: 619c15f7fac9 (ASoC: sun4i-i2s: Change SR and WSS computation)
Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Link: https://lore.kernel.org/r/20190729152130.27955-1-codekipper@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Change SR and WSS computation

The current computation for the SR (sample resolution) and the WSS (word
slot size) register parameters is based on a switch returning the matching
parameters for a given params width.

Later SoCs (A83t, H3, A64) changed that calculation, which was loosely the
same with an offset. Therefore, an offset was added to adjust those
parameters.

However, the calculation is a bit less trivial than initially thought.
Indeed, while we assumed that SR and WSS were always the same, on older
SoCs, SR will max at 24 (since those SoCs do not support 32 bits formats),
but the word size can be 32.

Newer SoCs can also support a much larger range (8 bits to 32 bits, by
increments of 4) of size than the older SoCs could.

Finally, the A64 and A83t were never adjusted to have that offset in the
first place, and were therefore broken from that point of view.

In order to fix all those issues, let's introduce two functions, get_wss
and get_sr, with their respective implementations for all the SoCs
supported so far.

Fixes: 21faaea1343f ("ASoC: sun4i-i2s: Add support for A83T")
Fixes: 66ecce332538 ("ASoC: sun4i-i2s: Add compatibility with A64 codec I2S")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add offset to RX channel select

Whilst testing the capture functionality of the i2s on the newer
SoCs it was noticed that the recording was somewhat distorted.
This was due to the offset not being set correctly on the receiver
side.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix sun8i tx channel offset mask

Although not causing any noticeable issues, the mask for the
channel offset is covering too many bits.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

ASoC: sun4i-i2s: move code from startup/shutdown hooks into pm_runtime hooks

startup() and shutdown() hooks are called for both substreams,
so stopping either substream when another is running breaks the
latter.

E.g. playback breaks if capture is stopped when playback is running.

Move code from startup() and shutdown() to resume() and suspend()
hooks respectively to fix this issue

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add compatibility with A64 codec I2S

The I2S block used for the audio codec in the A64 differs from other 3
I2S modules in A64 and isn't compatible with H3. But it is very similar
to what is found in A10(sun4i). However, its TX FIFO is
located at a different address.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Fix RX slot number of SUN8I

I2S's RX slot number of SUN8I should be shifted 4 bit to left.

Fixes: 7d2993811a1e ("ASoC: sun4i-i2s: Add support for H3")
Signed-off-by: Yong Deng <yong.deng@magewell.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

ASoC: sun4i-i2s: Show detailed error when DAI configuration callbacks fail

When any of the DAI hardware configuration callbacks (.hw_param,
.set_fmt, .set_sysclk) fails, there is no explanation about why it
failed. This is particularly confusing for .hw_param, which covers
many parameters of the DAI. Telling the users what parameter isn't
supported, and what the requested value was goes a long way for
developers trying to combine sun4i-i2s with external codecs.

This patch adds dev_err calls explaining what isn't supported or
failed, and what the value was. sun4i_i2s_set_clk_rate()'s first
parameter was changed to a struct snd_soc_dai *dai, so we can
get the underlying device.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Marcus Cooper <codekipper@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add support for A83T

The I2S controller in the A83T is mostly compatible with the one found
in earlier SoCs such as the A20 and A31. While the documents publicly
available for the A83T do not cover this hardware, the officially
released BSP kernel does have register definitions for it. These were
matched against the A20 user manual. The only difference is the TX FIFO
and interrupt status registers have been swapped around, like what we
have seen with the SPDIF controller.

This patch adds support for this hardware.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add support for H3

The sun8i-h3 introduces a lot of changes to the i2s block such
as different register locations, extended clock division and
more operational modes. As we have to consider the earlier
implementation then these changes need to be isolated.

None of the new functionality has been implemented yet, the
driver has just been expanded to allow it work on the H3 SoC.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Update global enable with bitmask

The default value of the config register is different on newer
SoCs and therefore enabling/disabling with a register write
will clear bits used to set the direction of the clock and frame
pins.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Check for slave select bit

The newer SoCs do not have this setting. Instead they set the pin
direction. Add a check to see if the bit is valid and if so set
it accordingly.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add regmap field to set DAI format

On the newer SoCs the bits to configure the operational mode are
located in a different register. Add a regmap field so that this
location can be configured.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add mclk enable regmap field

The location of the mclk output enable bit is different on newer
SoCs. Use a regmap field to enable it.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: bclk and lrclk polarity tidyup

On newer SoCs the bit fields for the blck and lrclk polarity are in
a different locations. Use regmap fields to set the polarity bits
as intended.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add regfields for word size select and sample resolution

On newer SoCs the location of the slot width select and sample
resolution are different and also there is a bigger range of
support.

For the current supported rates then an offset is required.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add regmap fields for channels

On the original i2s block the channel mapping and selection were
configured for stereo audio by default: This is not the case with
the newer SoCs and they are also located at different offsets.

To support the newer SoC then regmap fields have been added to the
quirks and these are initialised to their correct settings during
probing.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add TX FIFO offset to quirks

It has been seen that the newer SoCs have a different TX FIFO
address. Add this to the quirks structure.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add regmap config to quirks

The newer SoCs have a larger range than the original SoC that this
driver was developed for. By adding the regmap config to the quirks
then the driver can initialise the managed register map correctly.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add clkdiv offsets to quirks

The BCLKDIV and MCLKDIV found on newer SoCs start from an offset of 1.
Add the functionality to adjust the division values according to the
needs to the device being used.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Extend quirks scope

In preparation for the changes required to support newer SoCs then
quirks has been moved and also added to the device structure.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i: explicitly request exclusive reset control

Commit a53e35db70d1 ("reset: Ensure drivers are explicit when requesting
reset lines") started to transition the reset control request API calls
to explicitly state whether the driver needs exclusive or shared reset
control behavior. Convert all drivers requesting exclusive resets to the
explicit API call so the temporary transition helpers can be removed.

No functional changes.

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: alsa-devel@alsa-project.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Add quirks to handle a31 compatible

Some SoCs have a reset line that must be asserted/deasserted.
This patch adds a quirk to handle the new compatible
"allwinner,sun6i-a31-i2s" which will deassert the reset
line on probe function and assert it on remove's one.

This new compatible is useful in case of A33 codec driver, for example.

Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Increase DMA max burst to 8

As done previously for sun4i-codec, the DMA maxburst of 4
is not supported by every SoCs so the DMA controller engine
returns "unsupported value".

As a maxburst of 8 is supported by all variants, this patch
increases it to 8.

For more details, see commit from Chen-Yu Tsai:
commit 730e2dd0cbc7 ("ASoC: sun4i-codec: Increase DMA max burst to 8")

Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: i2s: Implement set_sysclk

In our i2s driver, we were previously trying to guess which oversample the
user wanted to use by looking at the rate and trying to max it.

However, the cards, and especially simple-card with its mclk-fs property
will already provide the expected oversample ratio by using the set_sysclk
callback.

We can thus implement it and remove the logic to deal with the runtime
guess.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sun4i-i2s: Implement capture support

The i2s driver was only implementing playback for now. Implement capture to
make sure that's not a limitation anymore.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: remove redundant dev_err call in sun4i_i2s_probe()

There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: fix semicolon.cocci warnings

sound/soc/sunxi/sun4i-i2s.c:624:2-3: Unneeded semicolon

Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: sunxi: Add Allwinner A10 Digital Audio driver

The Allwinner A10 and later come with a hardware block that used for the
PCM and I2S interfaces.

Add a driver for it in ASoC.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>