This patch adds module licence to lpass-cpu driver, without this
patch lpass-cpu module would taint with below error:

snd_soc_lpass_cpu: module license 'unspecified' taints kernel.
Disabling lock debugging due to kernel taint
snd_soc_lpass_cpu: Unknown symbol regmap_write (err 0)
snd_soc_lpass_cpu: Unknown symbol devm_kmalloc (err 0)
...
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch adds mic support to the lpass driver, most of the driver is
reused as it is, only the register level access is changed depending on
te direction of the stream.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

Now that we are ready to access wrdma registers, set the max register
and other regmap related configs to use correct values.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This reverts commit 18560a4e (ASoC: qcom: Specify LE device
endianness).

The commit that caused us to specify LE device endianness here,
29bb45f2 (regmap-mmio: Use native endianness for read/write,
2015-10-29), has been reverted in mainline so now when we specify
LE it actively breaks big endian kernels because the byte
swapping in regmap-mmio is incorrect. Let's revert this change
because it will 1) fix the big endian kernels and 2) be redundant
to specify LE because that will become the default soon.
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This reverts commit 18560a4e (ASoC: qcom: Specify LE device
endianness).

The commit that caused us to specify LE device endianness here,
29bb45f2 (regmap-mmio: Use native endianness for read/write,
2015-10-29), has been reverted in mainline so now when we specify
LE it actively breaks big endian kernels because the byte
swapping in regmap-mmio is incorrect. Let's revert this change
because it will 1) fix the big endian kernels and 2) be redundant
to specify LE because that will become the default soon.
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This is a little endian device, but so far we've been relying on
the regmap mmio bus handling this for us without explicitly
stating that fact. After commit 4a98da2164cf (regmap-mmio: Use
native endianness for read/write, 2015-10-29), the regmap mmio
bus will read/write with the __raw_*() IO accessors, instead of
using the readl/writel() APIs that do proper byte swapping for
little endian devices.

So if we're running on a big endian processor and haven't
specified the endianness explicitly in the regmap config or in
DT, we're going to switch from doing little endian byte swapping
to big endian accesses without byte swapping, leading to some
confusing results. Specify the endianness explicitly so that the
regmap core properly byte swaps the accesses for us.

Cc: Kenneth Westfield <kwestfie@codeaurora.org>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Tyler Baker <tyler.baker@linaro.org>
Cc: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

Apply PTR_ERR to the value that was recently assigned.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,y;
@@

if (IS_ERR(x) || ...) {
  ... when any
      when != IS_ERR(...)
(
   PTR_ERR(x)
|
*  PTR_ERR(y)
)
  ... when any
}
// </smpl>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NMark Brown <broonie@kernel.org>

asoc_qcom_lpass_cpu_dai_ops is exported and used by multiple drivers,
make it const to prevent modifying it at run time.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Some LPASS integrations like on APQ8016 do not have OSR clk, so making
osr clk optional would allow such integrations to use lpass driver.
Tested-by: NKenneth Westfield <kwestfie@codeaurora.org>
Acked-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch adds support to allow bitclk and osrclk per i2s dai port.
on APQ8016 there are 4 i2s ports each one has its own bit clks.

Without this patch its not possible to support multiple i2s ports in the
lpass driver.
Tested-by: NKenneth Westfield <kwestfie@codeaurora.org>
Acked-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch attempts to remove the hardcoded i2s port number in lpass
driver. Now the the port number comes from the dai id field.

This will allow other SOCs to use different port numbers on the lpass
driver.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: NKenneth Westfield <kwestfie@codeaurora.org>
Acked-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch tries to make the lpass driver more generic by moving the
ipq806x specific bits out of the cpu and platform driver, also allows the
SOC specific drivers to add the correct register offsets.

This patch also renames the register definition header file into more
generic header file.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: NKenneth Westfield <kwestfie@codeaurora.org>
Acked-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch removes unnecessary header files in lpass cpu and platform
code.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch remove redundant check after request_resource as ioremap would
do the check anyway.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

Fix a compile warning
  sound/soc/qcom/lpass-cpu.c: In function ‘lpass_cpu_daiops_trigger’:
  sound/soc/qcom/lpass-cpu.c:224:2: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized]
    return ret;
      ^
Although switch () lists the most of existing cases, it's still better
to cover the rest as an error properly.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Acked-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

As the representation of the DSP in the device
tree has changed from a required subnode to an
optional phandle, modify the test for DSP
existence in the LPASS CPU DAI driver,
accordingly.
Signed-off-by: NKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

Add the CPU DAI driver for the Qualcomm
Technologies low-power audio subsystem (LPASS).
Signed-off-by: NKenneth Westfield <kwestfie@codeaurora.org>
Acked-by: NBanajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: NMark Brown <broonie@kernel.org>