linux.git/sound/hda, branch v4.5

ALSA: hda - Loop interrupt handling until really cleared

2016-02-26T07:50:31+00:00

Currently the interrupt handler of HD-audio driver assumes that no irq
update is needed while processing the irq.  But in reality, it has
been confirmed that the HW irq is issued even during the irq
handling.  Since we clear the irq status at the beginning, process the
interrupt, then exits from the handler, the lately issued interrupt is
left untouched without being properly processed.

This patch changes the interrupt handler code to loop over the
check-and-process.  The handler tries repeatedly as long as the IRQ
status are turned on, and either stream or CORB/RIRB is handled.

For checking the stream handling, snd_hdac_bus_handle_stream_irq()
returns a value indicating the stream indices bits.  Other than that,
the change is only in the irq handler itself.

Reported-by: Libin Yang 
Cc: 
Signed-off-by: Takashi Iwai

ALSA: hda - Degrade i915 binding failure message

2016-01-20T14:00:26+00:00

Currently HD-audio driver on Intel Skylake or Broxteon gives an error
message when binding with i915 audio component fails.  However, this
isn't any serious error on a system without Intel graphics.  Indeed
there are such systems, where a third-party codec (e.g. Creative) is
put on the mobo while using other discrete GPU (e.g. Nvidia).
Printing a kernel "error" message is overreaction in such a case.

This patch downgrades the print level for that message.  For systems
that mandate the i915 binding (e.g. Haswell or Broadwell HDMI/DP),
another kernel error message is shown in addition to make clear what
went wrong.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=111021
Signed-off-by: Takashi Iwai

Merge tag 'asoc-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

2016-01-11T16:50:15+00:00

ASoC: Last updates for v4.5

A bunch more updates for v4.5, mainly driver work:

 - More topology API enhancements from Mengdong Lin working towards
   making everything more component based and being able to specify PCM
   links via topology.
 - Large sets driver updates from Cirrus, Intel (mainly more Skylake
   support) and Renesas.
 - New driver for AMD ACP
 - Rename PCM1792a driver to be generic pcm179x

ALSA: hdac: add snd_hdac_ext_bus_link_power_up_all

2016-01-10T12:02:47+00:00

We have an API for powering down all links, we need a similar one
for powering up links, so add for power up as well

Signed-off-by: Jayachandran B 
Signed-off-by: Subhransu S. Prusty 
Signed-off-by: Vinod Koul 
Reviewed-by: Takashi Iwai 
Signed-off-by: Mark Brown

ALSA: hdac: Increase timeout value for link power check

2016-01-10T12:02:44+00:00

HW recommends 180us for worst case values for link power up
delay, so change the current delay value from 50 (150us) to 150
(450us)

Signed-off-by: Jayachandran B 
Signed-off-by: Vinod Koul 
Reviewed-by: Takashi Iwai 
Signed-off-by: Mark Brown

ALSA: hdac: couple the hda DMA stream in cleanup

2016-01-10T12:02:40+00:00

A stream is by default in coupled mode, in DSP operation we move
it to decoupled mode. On cleanup HW expects that we leave it back
to default state so couple the DMA on cleanup.

Signed-off-by: Jeeja KP 
Signed-off-by: Vinod Koul 
Reviewed-by: Takashi Iwai 
Signed-off-by: Mark Brown

ALSA: hdac: Add support for hda DMA Resume capability

2016-01-10T12:02:30+00:00

Skylake sports new capability of DMA resume, DRSM where we can
resume the DMA. This capability is defined by presence of
AZX_DRSM_CAP_ID.

If this capability is present, we use this capability.
So we add:

snd_hdac_ext_stream_drsm_enable() - DMA resume caps
snd_hdac_ext_stream_set_dpibr() - set the DMA position
snd_hdac_ext_stream_set_lpib() - set the lpib

Signed-off-by: Jeeja KP 
Signed-off-by: Vinod Koul 
Reviewed-by: Takashi Iwai 
Signed-off-by: Mark Brown

ALSA: hda - Move audio component accesses to hdac_i915.c

2015-12-10T13:41:07+00:00

A couple of i915_audio_component ops have been added and accessed
directly from patch_hdmi.c.  Ideally all these should be factored out
into hdac_i915.c.

This patch does it, adds two new helper functions for setting N/CTS
and fetching ELD bytes.  One bonus is that the hackish widget vs port
mapping is also moved to hdac_i915.c, so that it can be fixed /
enhanced more cleanly.

Reviewed-by: Vinod Koul 
Signed-off-by: Takashi Iwai

ALSA: hda - Add / fix kernel doc comments

2015-10-28T11:37:29+00:00

Give some readable comment in kernel doc style for each exported
function, as I promised in the previous meetings.  While we're at it,
fix the wrong comments, too.

Signed-off-by: Takashi Iwai

ALSA: hda - Advertise MODALIAS in uevent

2015-10-20T08:15:53+00:00

By setting the MODALIAS variable in uevents, userspace helpers will be
enabled to load modules via the module alias associated with a device.

This information is required to automatically load HDA codec drivers
instead of having to explicitly request the various modules in the HDA
core code.

[Note that currently the legacy HDA controller driver tries to bind
 codec modules manually.  It's for supporting the fallback generic
 drivers.  This new udev modalias support was added rather for ASoC
 HDA ext drivers, since this addition itself won't hurt the legacy HDA
 -- tiwai]

[Use the common helper function to generate the modalias -- tiwai]

Signed-off-by: Thierry Reding 
Reviewed-by: Vinod Koul 
Tested-by: Subhransu S Prusty 
Signed-off-by: Takashi Iwai