ALSA: compress_core: Deconstify copy callback buffer

The buffer passed to the copy callback should not be const because the
copy callback can be used for capture and playback.

Change-Id: I20674598b00bf933a0fe08eb77c122df6cdf3369
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Eric Laurent <elaurent@google.com>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ALSA: compress_core: Add support for capture streams

Change-Id: I1ebe650d3b870e6d0c79181b1ed6d333df1b38a6
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Eric Laurent <elaurent@google.com>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ALSA: compress_core: Remove unused hw_pointer

Only tested as far as build.

Change-Id: Ida52baaf4112801318ca37ab4c928809d328e5ed
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Eric Laurent <elaurent@google.com>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ALSA: compress_core: Rework writes to use cumulative values

This patch reworks the writes to use cumulative values thus making the
app_pointer unecessary and removing it.

Only tested as far as build.

Change-Id: I89478e4b4dea5e599088ab007e3c30394a61d037
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Eric Laurent <elaurent@google.com>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ALSA: compress: info leak in snd_compr_get_caps()

If the ->get_caps() function doesn't clear the buffer then there would
stack information leaked to userspace.  For example,
soc_compr_get_caps() can return success without clearing the buffer.

Change-Id: Ifcd9c95fa949e151039a115f5bd77f7ce6b20a79
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Eric Laurent <elaurent@google.com>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ALSA: compress: Use kzalloc() for ioctls writing back data

Like the previous patch by Dan, we should clear the data to be
returned from certain compress ioctls, namely,
snd_compr_get_codec_caps() and snd_compr_get_params().
This time, we can simply replace kmalloc() with kzalloc().

Change-Id: Ib1d0e669e82eba76bfc2bd0b25034970c12537be
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Eric Laurent <elaurent@google.com>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
soc: return value of get soc version ioctl

Change-Id: I20e46f87997298adb08b0bab30ca82ed1c8cbc19
Signed-off-by: Haynes Mathew George <hgeorge@codeaurora.org>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ALSA: compress: Memset timestamp structure to zero.

snd_compr_tstamp is initialized using aggregate initialization
that does not zero out the padded bytes. Initialize timestamp
structure to zero using memset to avoid this.

CRs-Fixed: 568717
Change-Id: I7a7d188705161f06201f1a1f2945bb6acd633d5d
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ASoC: compress: dont aquire lock for draining states

Both draining and partial draning states will take a while getting executed. The
lock aquired will block the other operations like pause, stop etc which are
perfectly valid cmds during these states. So don't use mutex while invoking DSP
for these ops.

Change-Id: I38f824f6b983de218e86d31af23c628930905427
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Eric Laurent <elaurent@google.com>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ASoc: Add {get/set}_metadata ops for dynamic DAI links

Add {set/get}_metadata in soc compress framework for dynamic
FE DAI links.

Change-Id: I5e678a565d2d1a323f4cfed5dd6217ec2388100d
Signed-off-by: Haynes Mathew George <hgeorge@codeaurora.org>
Signed-off-by: Eric Laurent <elaurent@google.com>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
Adjust refcounts for FE Dai links in SOC compress framework

Change-Id: I3d894fc13e381eb066b3faed0fc76c31493523af
Signed-off-by: Haynes Mathew George <hgeorge@codeaurora.org>
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
ASoC: Compress: Check and set pcm_new driver op

Check and set if pcm_new driver op is initialized by the driver.
This allows the compress offload drivers to register mixer
controls.

Change-Id: If54fa36cf19cbca7239d6e3e30455472e9a173d8
Signed-off-by: Ravi Kumar Alamanda <ralama@codeaurora.org>