The audio driver mistakenly allows 64 bit addresses to be created for
the audio driver on Nvidia GPUs.  Unfortunately, the hardware normally
only supports up to 40 bits of DMA.  This can cause system panics as
well as misdirected data when the address is > 40 bits as the upper
part the address is truncated.
Signed-off-by: NMike Travis <travis@sgi.com>
Reviewed-by: NMike Habeck <habeck@sgi.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

For capture, the delay through the codec contributes to the time stamp
of the sample recorded at the A to D.  Rename the codec time stamp
function appropriately.
Signed-off-by: NDylan Reid <dgreid@chromium.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

For playback add the codec-side delay to the timestamp, for capture
subtract it.  This brings the timestamps in line with the time that
was recently added to the delay reporting.
Signed-off-by: NDylan Reid <dgreid@chromium.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Add a new codec PCM ops, get_delay(), to obtain the codec/stream-
specific PCM delay count.  When it's NULL, nothing changes.

This new feature was requested for CA0132, which has significant
delays in the path depending on the running DSP code.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This reverts commit 6ab31741.

The commit [6ab31741: ALSA: hda - Allow power_save_controller option
override DCAPS] changed the behavior of power_save_controller so that
it can override the driver capability.  This assumed that this option
is rarely changed dynamically unlike power_save option.  Too naive.

It turned out that the user-space power-management tool tries to set
power_save_controller option to 1 together with power_save option
without knowing what's actually doing.  This enabled forcibly the
runtime PM of the controller,  which is known to be broken om many
chips thus disabled as default.

So, the only sane fix is to revert this commit again.  It was intended
to ease debugging/testing for runtime PM enablement, but obviously we
need another way for it.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=56171Reported-and-tested-by: NNikita Tsukanov <keks9n@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The current DSP loader code abuses snd_hda_lock_devices() for ensuring
the DSP loader not conflicting with the other normal operations.  But
this trick obviously doesn't work for the PM resume since the streams
are kept opened there where snd_hda_lock_devices() returns -EBUSY.
That means we need another lock mechanism instead of abuse.

This patch provides the new lock state to azx_dev.  Theoretically it's
possible that the DSP loader conflicts with the stream that has been
already assigned for another PCM.  If it's running, the DSP loader
should simply fail.  If not -- it's the case for PM resume --, we
should assign this stream temporarily to the DSP loader, and take it
back to the PCM after finishing DSP loading.  If the PCM is operated
during the DSP loading, it should get an error, too.
Reported-and-tested-by: NDylan Reid <dgreid@chromium.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

We've got a regression report wrt the IRQ issue related with the
power-save on a Dell machine, and disabling runtime PM works around.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=53441

Cc: <stable@vger.kernel.org> [v3.7+]
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This patch fixes a few obvious bugs in DSP loader stuff:
- Fix possible memory leaks in the error path
- Avoid double-free calls in dma_reset()
- Properly set/unset WC bits for DMA buffers
- Add missing error status checks
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This patch adds the HD Audio Device IDs for the Intel Wellsburg PCH
Signed-off-by: NJames Ralston <james.d.ralston@intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

... looks like we need this for stable operations.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Add new PCI ID 0x0a0c for Haswell ULT platform.
Signed-off-by: NWang Xingchao <xingchao.wang@linux.intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

For non-snoop mode, we fiddle with the page attributes of CORB/RIRB
and the position buffer, but also the ring buffers.  The problem is
that the current code blindly assumes that the buffer is contiguous.
However, the ring buffers may be SG-buffers, thus a wrong vmapped
address is passed there, leading to Oops.

This patch fixes the handling for SG-buffers.

Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=800701

Cc: <stable@vger.kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Currently we use LPIB forcibly for both playback and capture for
Poulsbo and Oaktrail devices, and this seems rather problematic.
The recent fix for LPIB delay count seems working well with these
devices, so let's enable it instead.
Reported-by: NMartin Weishart <martin.weishart@telosalliance.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Add an overflow check of CORB in HD-audio controller and codec drivers
so that flood of sequential writes would work properly.
In the controller side, add a check of CORB read-pointer to make
returning -EAGAIN when it's full.  Meanwhile in the codec side, when
-EAGAIN error is received, it retries the write after flushing the
pending verbs (calling get_response() essentially does it).
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Change the power_save_controller option to bint from bool so that user
can override the runtime PM capability bit and force to enable or
disable the runtime PM.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

We've got a few bug reports that the runtime D3 results in the dead
HD-audio controller.  It seems that the problem is in a deeper level
than the sound driver itself, so as a temporal solution, disable the
feature for these controllers again.
Reported-and-tested-by: NVincent Blut <vincent.debian@free.fr>
Reported-and-tested-by: NMaurizio Avogadro <mavoga@gmail.com>
Cc: <stable@vger.kernel.org> [v3.7]
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Resuming a switcheroo'd HDA controller hangs since the completion
is one-shot (thus works the first time). Fix by using completions
that explictly need rearming, so remain fired before.
Signed-off-by: NDaniel J Blueman <daniel@quora.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The runtime_idle callback is the right place to check the suspend
capability, but currently we do it wrongly in the runtime_suspend
callback.  This leads to a kernel error message like:
   pci_pm_runtime_suspend(): azx_runtime_suspend+0x0/0x50 [snd_hda_intel] returns -11
and the runtime PM core would even repeat the attempts.
Reported-and-tested-by: NBorislav Petkov <bp@alien8.de>
Cc: <stable@vger.kernel.org> [v3.7]
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The HD-audio driver artificially calls the suspend and the resume code
path in the VGA switcheroo state changes.  When a machine goes to
suspend, it tries to suspend the device again, and it stalls at
snd_power_wait().

This patch adds checks whether the devices were already in (forced)
suspend in PM callbacks for avoiding the doubly suspend.
Reported-by: NDaniel J Blueman <daniel@quora.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

When the HD-audio controller is disabled (e.g. via vga switcheroo) but
the driver is still accessing it, it spews floods of "spurious
response" kernel messages.  It's because CORB/RIRB WP reads 0xff, and
the driver tries to fill up until this number.

This patch changes the CORB/RIRB WP reads to word instead of byte, and
add the check of the read value.  If it's 0xffff, the controller is
supposed to be disabled, so the further action will be skipped.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Reducing the time on HDA link reset can help to reduce the driver loading
time. So we replace msleep with usleep_range to get more accurate time
control and change the value to a smaller one. And a 100ms timeout is set
for both entering and exiting the link reset.
Signed-off-by: NXingchao Wang <xingchao.wang@intel.com>
Signed-off-by: NMengdong Lin <mengdong.lin@intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Since __devinit* have been removed completely, DELAYED_INIT*_MARK in
hda_intel.c became NOP.  Let's rip them off.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

CONFIG_HOTPLUG is going away as an option.  As result the __dev*
markings will be going away.

Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

When printing, use a prefix of the PCI domain, bus, device and function
as in other drivers, to differentiate multiple devices.

Important for reporting and debugging. A future step is to tidy this up with
dev_printk et al.

v2: Move conversion specifier into call site, preventing build issues
v3: Refactor for Takashi's for-next branch
Signed-off-by: NDaniel J Blueman <daniel@quora.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The recent fix for vga switcheroo race in commit 128960a9 opened yet
another race.  At the time the audio driver starts probing, user may
turn off D-GPU off.  But at this moment, the audio driver still
doesn't register the vga switcheroo client, thus the switching isn't
notified.  Then the hardware gets off out of sudden, resulting in
invalid reads and lots of "spurious response" error messages.

For solving this situation, the following changes have been done in
this patch:
- Move again vga switcheroo registration to the very early stage of
  the probing; this also requires to set pci drvdata properly before
  registration
- Introduce the completion to synchronize the driver probe at vga
  switcheroo callbacks; this assures that the whole probing finished
  before executing the callbacks
Reported-by: NDaniel J Blueman <daniel@quora.org>
Tested-by: NDaniel J Blueman <daniel@quora.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Pass DMA buffer pointers in calls to setup_bdle().
Add DSP loader callback routines to controller.
Add new DSP loader switch to Kconfig to turn off DSP firmware.
Signed-off-by: NIan Minett <ian_minett@creativelabs.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The new firmware code tries to re-read the formerly read firmware
files before suspend.  Thus it's wiser to keep the "patch" firmware in
the driver for avoiding this unnecessary re-reading.

Of course, this will consume a bit of memory for unused stuff, but
the patch fw is supposed to be fairly small, so it's more benefit in
the end.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

We've got a report that the runtime PM may make the codec the
unresponsive on AMD platforms.  Since the feature has been tested only
on the recent Intel platforms, it's safer to limit the support to such
devices for now.

This patch adds a new DCAPS bit flag indicating the runtime PM
support, and mark it for Intel controllers.
Reported-and-tested-by: NJulian Wollrath <jwollrath@web.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The audio chipset used in Teradici's Tera2 host cards is the same as that in
the 1200 host cards. This patch allows ALSA to recognize the Tera2 cards.
Signed-off-by: NLars R. Damerow <lars@pixar.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Add a couple of tracepoints to snd-hda-intel for tracing the position
and the trigger timings.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Reuse code from clocksource to handle wall clock counter.
Since wrapparound occurs, the audio timestamp is reinitialized
to zero on a trigger. Synchronized linked devices will
start counting from same reference to avoid any drift.

Max buffer time is limited to 178 seconds to make sure
wall clock counter does not overflow

Wallclock timestamps are disabled on capture streams
until we figure out how to handle digital inputs.
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The variable stream is initialized but never used
otherwise, so remove the unused variable.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

... to make it clear to see from which device it comes.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

If LPIB reports a pretty bad value, we can't trust such hardware for
calculating the PCM delay.  Automatically turn off the delay counting
when such a problem is encountered.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=48911

Cc: <stable@vger.kernel.org> [v3.6]
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Now that we have a generic unsol mechanism, we can implement a generic
poll loop, which can be used for debugging, or if a codec's unsol
mechanism is broken.
Signed-off-by: NDavid Henningsson <david.henningsson@canonical.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Delay the registration of VGA switcheroo client to the end of the
probing.  Otherwise a too quick switching may result in Oops during
probing.

Also add the check of the return value from snd_hda_lock_devices().
Reported-and-tested-by: NDaniel J Blueman <daniel@quora.org>
Cc: <stable@vger.kernel.org> [v3.5+]
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The white-list entries of position_fix for ASUS laptops have been
added just as a workaround for broken COMBO mode.  Now the combo mode
itself is disabled, we can safely remove these entries.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

It turned out that the COMBO position fix mode is rather more harmful,
and it got reverted (with the replacement of runtime->delay
calculation) recently.  Hence we can get rid of AZX_DCAPS_POSFIX_COMBO
as well.

It's still possible to pass this mode via position_fix module option,
in case where this really helps on weird machines (who knows).
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Tested with LPIB delay without any issues.
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

DMA Position in Buffer (DPIB) should be used for
ring buffer management, while LPIB register provides
information on the number of samples transfered on
the link. The difference between the two pieces of
information corresponds to hardware/DMA buffering.

This patch reports this difference in runtime->delay, and
removes the use of the COMBO mode on recent Intel hardware.

Credits to Takashi Iwai for an initial patch.

[rebased to for-next branch and replaced snd_printk() with
 snd_printdd() by tiwai]
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>