Commit Graph

262 Commits

Author SHA1 Message Date
Takashi Iwai b9a94a9c78 ALSA: hda - convert to hda_device_id
Finally we have a proper infrastructure to generate the modaliases
automatically, let's move to hda_device_id from the legacy
hda_codec_preset that contains basically the same information.

The patch function hook is stored in driver_data field, which is long,
and we need an explicit cast.  Other than that, the conversion is
mostly straightforward.  Each entry is even simplified using a macro,
and the lengthy (and error-prone) manual modaliases got removed.

As a result, we achieved a quite good diet:
 14 files changed, 407 insertions(+), 595 deletions(-)

Reviewed-by: Vinod Koul <vinod.koul@intel.com>
Tested-by: Subhransu S Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-10-20 10:15:20 +02:00
Takashi Iwai ded255be22 ALSA: hda - consolidate chip rename functions
A few multiple codec drivers do renaming the chip_name string but all
these are open-coded and some of them have even no error check.  Let's
make common helpers to do it properly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-10-15 14:05:28 +02:00
Takashi Iwai 735c75cf4d ALSA: hda - Disable widget power-save for VIA codecs
The widget power-save that was enabled in 4.1 kernel seems resulting
in the silent output on VIA codecs by some reason.  Some widgets get
wrong power states.

As a quick fix, turn this flag off while keeping power_down_unused
flag.  This will bring back to the state of 4.0.x.

Fixes: 688b12cc3c ('ALSA: hda - Use the new power control for VIA codecs')
Reported-and-tested-by: Harald Dunkel <harri@afaics.de>
Cc: <stable@vger.kernel.org> # v4.1
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-06-25 08:48:54 +02:00
Takashi Iwai 8654844cf5 Merge branch 'for-linus' into for-next
Resolve the non-trivial conflict due to the hdac regmap API changes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-06-09 07:22:26 +02:00
Takashi Iwai 6b6d00076b ALSA: hda - Fix jack detection at resume with VT codecs
VT202x codecs seem requiring some delay after the resume D0 power
transition for making the jack detection working again.  Without the
delay soon after D0, the jack is always detected as unplugged.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=98921
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-31 09:27:29 +02:00
Takashi Iwai 225068ab27 ALSA: hda - Set patch_ops before calling auto-parser
... so that the parser code can overwrite some optional ops.  For
Realtek and others, it can be set solely in the spec allocator, so it
results in a good code cleanup, too.

With this change, we can finally remove the local stream_pm setup and
rely on the generic parser's automatic setting.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 10:42:14 +02:00
Takashi Iwai b47eee2e0a ALSA: hda - Fix lost sound due to stream_pm ops cleanup
The commit [49fb18972581: ALSA: hda - Set stream_pm ops automatically
by generic parser] resulted in regressions on some Realtek and VIA
codecs because these drivers set patch_ops after calling the generic
parser, thus stream_pm got cleared to NULL again.  I haven't noticed
since I tested with IDT codec.

Restore (partial revert) the stream_pm ops for them to fix the
regression.

Fixes: 49fb189725 ('ALSA: hda - Set stream_pm ops automatically by generic parser')
Reported-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 09:49:01 +02:00
Takashi Iwai 49fb189725 ALSA: hda - Set stream_pm ops automatically by generic parser
This allows user to test power_save_node feature via sysfs or patch
firmware even on the codecs that don't specify it.  It'll also save a
few lines.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-27 08:39:27 +02:00
Takashi Iwai cfd3113e7c ALSA: hda/via - Add missing stream_pm ops setup
Similar like the case for Realtek, VIA codec driver needs this ops as
well for making the widget power-save working.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-04-09 15:23:59 +02:00
W. Trevor King 4738465c37 ALSA: hda/via - Add beep controls to VIA codecs
My codec has a beep-generating node:

  $ cat /proc/asound/card1/codec#0
  Codec: VIA VT1802
  ...
  Vendor Id: 0x11068446
  Subsystem Id: 0x15587410
  Revision Id: 0x100000
  ...
  Node 0x22 [Beep Generator Widget] wcaps 0x70040c: Mono Amp-Out
    Amp-Out caps: ofs=0x0a, nsteps=0x12, stepsize=0x05, mute=1
    Amp-Out vals:  [0x0a]
    Power states:  D0 D1 D2 D3
    Power: setting=D0, actual=D0
  ...

But I was missing the:

  Control: name=...

entries that I need to manage this widget from alsamixer.  With this
patch (based on the similar Mono Amp-Out handling in
patch_conexant.c), I get a new:

  input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/sound/card1/hdaudioC1D0/input15

entry in dmesg and controls to manage that beep:

  $ cat /proc/asound/card1/codec#0 | grep -A5 Beep
  Node 0x22 [Beep Generator Widget] wcaps 0x70040c: Mono Amp-Out
    Control: name="Beep Playback Volume", index=0, device=0
      ControlAmp: chs=1, dir=Out, idx=0, ofs=0
    Control: name="Beep Playback Switch", index=0, device=0
      ControlAmp: chs=1, dir=Out, idx=0, ofs=0
    Amp-Out caps: ofs=0x0a, nsteps=0x12, stepsize=0x05, mute=1
    Amp-Out vals:  [0x12]
    Power states:  D0 D1 D2 D3
    Power: setting=D0, actual=D0

[rebased and modified for the latest tree by tiwai]

Signed-off-by: W. Trevor King <wking@tremily.us>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-25 08:59:00 +01:00
Takashi Iwai 7639a06c23 ALSA: hda - Move a part of hda_codec stuff into hdac_device
Now some codes and functionalities of hda_codec struct are moved to
hdac_device struct.  A few basic attributes like the codec address,
vendor ID number, FG numbers, etc are moved to hdac_device, and they
are accessed like codec->core.addr.  The basic verb exec functions are
moved, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-23 13:17:17 +01:00
Takashi Iwai 967b1307b6 ALSA: hda - Rename power_mgmt flag with power_save_node
David suggested that the name "power_mgmt" is too ambiguous.  Rename
the flag with a bit clearer one "power_save_node".

Also, add the corresponding description to HD-Audio.txt, too.

Reported-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-20 18:31:18 +01:00
Takashi Iwai 688b12cc3c ALSA: hda - Use the new power control for VIA codecs
VIA codecs used to have the own power controls but they were disabled
at transition to the generic parser due to the coding assuming the
fixed routes.  Now we get the proper support of equivalently fine
power management in the generic parser, and the old kludges can be
replaced with it.  This results in the reduction of lots of dead
codes.

The advanced PM feature is disabled as default like before for keeping
the compatible behavior.  It's enabled via "Dynamic Power-Control"
mixer element.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-18 09:22:35 +01:00
Takashi Iwai 2f35c630f7 ALSA: hda - Use standard workqueue for unsol and jack events
The events that are handled by HD-audio drivers are no frequent and
urgent ones, so we can use the standard workqueue without any problem
nowadays.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-03 11:37:57 +01:00
Takashi Iwai bbbc7e8502 ALSA: hda - Allocate hda_pcm objects dynamically
So far, the hda_codec object kept the hda_pcm list in an array, and
the codec driver was expected to assign the array.  However, this
makes the object life cycle management harder, because the assigned
array is freed at the codec driver detach while it might be still
accessed by the opened streams.

In this patch, we allocate each hda_pcm object dynamically and manage
it as a linked list.  Each object has a kref refcount, and both the
codec driver binder and the PCM open/close touches it, so that the
object won't be freed while in use.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-03 11:26:24 +01:00
Takashi Iwai 6efdd8513f ALSA: hda - Add card field to hda_codec struct
Allow the codec object to have an individual card pointer.  Not only
this simplifies the redirections in many places, also this will allow
us to make each codec assigned to a different card object.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-03 11:25:16 +01:00
Takashi Iwai d8a766a16e ALSA: hda - Bind codecs via standard bus
Now we create the standard HD-audio bus (/sys/bus/hdaudio), and bind
the codec driver with the codec device over there.  This is the first
step of the whole transition so that the changes to each codec driver
are kept as minimal as possible.

Each codec driver needs to register hda_codec_driver struct containing
the currently existing preset via the new helper macro
module_hda_codec_driver().  The old hda_codec_preset_list is replaced
with this infrastructure.  The generic parsers (for HDMI and other)
are also included in the preset with the special IDs to bind
uniquely.

In HD-audio core side, the device binding code is split to
hda_bind.c.  It provides the snd_hda_bus_type implementation to match
the codec driver with the given codec vendor ID.  It also manages the
module auto-loading by itself like before: when the matching isn't
found, it tries to probe the corresponding codec modules, and finally
falls back to the generic drivers.  (The special ID mentioned above is
set at this stage.)

The only visible change to outside is that the hdaudio sysfs entry now
appears in /sys/bus/devices, not as a sound class device.

More works to move the suspend/resume and remove ops will be
(hopefully) done in later patches.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-02-23 09:16:06 +01:00
Takashi Iwai 74f14b3683 ALSA: hda - Make add_stereo_mix_input flag tristate
... for distinguishing whether it's explicitly enabled via a user hint
or enabled by a driver as a fallback.  Now the former case corresponds
to HDA_HINT_STEREO_MIX_ENABLE while the latter to
HDA_HINT_STEREO_MIX_AUTO.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-15 13:46:08 +01:00
Takashi Iwai 7c3008c47b ALSA: hda - Remove superfluous hooks from VIA driver
Like the previous fix for STAC/IDT codecs, the automute hooks in VIA
driver can be also removed by enabling the power control callback for
all pins.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-16 17:25:01 +02:00
Takashi Iwai 1a4f69d5aa ALSA: hda - Allow multiple callbacks for jack
So far, hda_jack infrastructure allows only one callback per jack, and
this makes things slightly complicated when a driver wants to assign
multiple tasks to a jack, e.g. the standard auto-mute with a power
up/down sequence.  This can be simplified if the hda_jack accepts
multiple callbacks.

This patch is such an extension: the callback-specific part (the
function and private_data) is split to another struct from
hda_jack_tbl, and multiple such objects can be assigned to a single
hda_jack_tbl entry.

The new struct hda_jack_callback is passed to each callback function
now, thus the patch became bigger than expected.  But these changes
are mostly trivial.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-16 17:23:44 +02:00
Takashi Iwai 62f949bf6b ALSA: hda - Get rid of action field from struct hda_jack_tbl
The action value assigned to each hda_jack_tbl entry is mostly
superfluous.  The actually used values are either the widget NID or a
value specific to the callback.

The former case can be simply replaced by a reference to widget NID
itself.  The only place doing the latter is STAC/IDT codec driver for
the powermap handling.  But, the code doesn't need to check the action
field at all -- the function jack_update_power() is called either with
a specific pin or with NULL.  So the check of jack->action can be
removed completely there, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-11 14:14:21 +02:00
Takashi Iwai a8dca4604a ALSA: hda - Make snd_hda_gen_spec_free() static
The last user of snd_hda_gen_spec_free() is patch_via.c, and we can
rewrite it safely with snd_hda_gen_free(), so that
snd_hda_gen_spec_free() can be a local function in hda_generic.c.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-10 18:23:57 +01:00
Takashi Iwai f1e762ddc8 ALSA: hda - Enable stereo mix as default for AD and VIA codecs
AD and VIA codecs had stereo mixer input enabled as default before
moving to the generic parser, and people think the lack of such a
regression.  In this patch, the stereo mixer input is added back to
the input selection if no auto-mic is available, and if it's not
disabled explicitly via hint.  This should satisfy most of demands,
i.e. stereo mix on desktop machines like what it worked before, and it
still keeps the new auto-mic feature on laptops.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-12-09 16:02:24 +01:00
Wang Xingchao 7eaa9161ed ALSA: hda - Clearing jackpoll_interval avoid pending work
Clearing jackpoll_interval before calling cancel_delayed_work_sync(),
otherwise the work will be triggered again and cause impact in
hda_jackpoll_work(). The next patch will poll jack once even with
jackpoll_interval=0.

Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-29 14:19:03 +02:00
Takashi Iwai eb33ccf763 ALSA: hda - Use auto_mute_via_amp=1 for VT1708
We've got bug report wrt many machines with VT1708 (e.g. IBM POS
machines) showing the broken auto-mute behavior.  It turned out that
the problem is that the pin control values of the speaker and line-out
pins are completely ignored.  As a workaround, let's use the newly
introduced feature of the generic parser, to control the mute via amp
on pins.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-06-25 08:13:55 +02:00
Takashi Iwai d045c5dc43 ALSA: hda - Fix missing Mic Boost controls for VIA codecs
Some VIA codecs like VT1708S have Mic boost amps in the mic pins but
they aren't exposed in the capability bits.  In the past driver code,
we override the pin caps and create mic boost controls forcibly.
While transition to the generic parser, we lost the mic boost controls
although the pin caps are still overridden, because the generic parser
code checks the widget caps, too.

So this patch adds a new helper function to allow the override of the
given widget capability bits, and makes VIA codecs driver to add the
missing input-amp capability bit.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=59861
Cc: <stable@vger.kernel.org> [v3.9+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-06-19 07:54:09 +02:00
Takashi Iwai 2c38d990fb ALSA: hda/via - Use standard snd_hda_shutup_pins()
Just a minor clean up.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-06-05 15:25:18 +02:00
Takashi Iwai 5a6f294e87 ALSA: hda/via - Fix wrongly cleared pins after suspend on VT1802
VIA driver has a special suspend handling only for VT1802 to reduce
the pop noise.  During the transition to the generic parser, the
behavior of snd_hda_set_pin_ctl() was also changed to modify the
cached values, too.  And this caused a regression where the pin is
still cleared even after the resume (including the resume from power
save), resulting in the silent output.

The fix is simply to replace snd_hda_set_pin_ctl() with the explicit
call of snd_hda_codec_write() again.

Reported-by: Alex Riesen <raa.lkml@gmail.com>
Cc: <stable@vger.kernel.org> [v3.9]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-06-03 11:33:16 +02:00
Takashi Iwai 05909d5c67 ALSA: hda - Add keep_eapd_on flag to generic parser
VT1802 codec seems to reset EAPD of other pins in the hardware level,
and this was another reason of the silent headphone output on some
machines.  As a workaround, introduce a new flag indicating to keep
the EPAD on to the generic parser, and set it in patch_via.c.

Reported-by: Alex Riesen <raa.lkml@gmail.com>
Cc: <stable@vger.kernel.org> [v3.9]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-06-03 11:33:06 +02:00
Takashi Iwai 087c2e3b4e ALSA: hda/via - Disable broken dynamic power control
Since the transition to the generic parser, the actual routes used
there don't match always with the assumed static paths in some
set_widgets_power_state callbacks.  This results in the wrong power
setup in the end.  As a temporary workaround, we need to disable the
calls together with the non-functional dynamic power control enum.

Reported-by: Alex Riesen <raa.lkml@gmail.com>
Cc: <stable@vger.kernel.org> [v3.9]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-06-03 11:32:55 +02:00
Takashi Iwai 4abdbd1c2c ALSA: hda - VIA prefers side surrounds over HP
The recent fix for the independent HP reduced the availability of the
side surround output, because there are only 4 DACs for 7.1 and a HP
outputs.  Adjust the badness tables for VIA so that 7.1 outputs are
activated for the cost of missing independent HP.

Once when we implement the dynamic DAC switching to multiple outputs,
this conflicts will be eased in future...

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-03-22 15:11:07 +01:00
Takashi Iwai 0186f4f4f2 ALSA: hda - Use generic array for loopback list management
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-02-07 10:45:11 +01:00
David Henningsson 05dc0fc9d0 ALSA: hda - detect jacks on VT1708 even when no streams are active
These days, GUIs such as Gnome sound settings want to be able to
show the correct jack status even when no streams are currently
running. I doubt this gives any measurable difference in power,
but if it does, the "Jack Detect" control can still be used to
turn polling off.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-02-05 12:17:31 +01:00
David Henningsson f672f65a1c ALSA: hda - Fix phantom jacks on VT1708
The VT1708 has no unsol event capability, and polling is set using
the "Jack Detect" alsamixer control. In order not to create
phantom Jack controls, temporary enable jackpoll during build_controls.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-02-05 12:17:24 +01:00
Takashi Iwai 9040d102da ALSA: hda - Add snd_hda_check_power_state() helper function
... for small refactoring.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-24 17:47:17 +01:00
Takashi Iwai 25368c47ae ALSA: hda/via - Fix wrong checks of power state bits
AC_VERB_GET_POWER_STATE returns the combined bits of the actual state
and the target state.  Thus, comparing the obtained value directly
with the target value can't work.  The value has to be shifted and
masked properly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-24 17:14:35 +01:00
Takashi Iwai 139611705a ALSA: hda - Enable parsing the independent HP mode as default for VIA codecs
The original VIA codec parser enabled it as default, so let's keep the
behavior as it was.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-21 15:15:55 +01:00
Takashi Iwai b3f6008f2d ALSA: hda - Use generic parser for VIA codec driver
Yet another step forward.  As all features for VIA codecs have been
implemented in the generic driver, we can move on to migrate the VIA
codec parser, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-12 08:45:02 +01:00
Takashi Iwai 5ec16d12c8 ALSA: hda - Rearrange INPUT_PIN_ATTR_*
Put INPUT_PIN_ATTR_FRONT after INPUT_PIN_ATTR_REAR, and define
INPUT_PIN_ATTR_LAST to point to the last element.

This is a preliminary work for cleaning up Realtek auto-mic parser.
In the auto-mic implementation, the front panel is preferred over the
rear panel.  By arranging the attr definitions like in this commit, we
can simply use sort() for figuring out the priority order.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-12 08:30:48 +01:00
Takashi Iwai c9ce6b260b ALSA: hda - Move fixup code into struct hda_codec
Since the fixup code is used commonly, it's worth to move it to the
common place, struct hda_codec, instead of keeping in hda_gen_spec.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-12 08:30:45 +01:00
Lydia Wang 6121b84af3 ALSA: HDA: VIA: Add support for codec VT1808.
Add support for new codec VT1808, which is similiar with VT1705CF.

Signed-off-by: Lydia Wang <lydiawang@viatech.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-12-10 12:05:16 +01:00
Lydia Wang 43737e0ae9 ALSA: HDA: VIA Add support for codec VT1705CF.
Add support for new codec VT1705CF.
When power on/off Audio output converter of VT1705CF, the stream tag
will be cleared. But driver caches the value. So when power on Audio
output converter, the update_conv_power_state() will restore the saved
stream tag of it.

Signed-off-by: Lydia Wang <lydiawang@viatech.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-12-10 11:45:24 +01:00
Takashi Iwai dda415d418 ALSA: hda - Add a helper function for simple enum kcontrols
The same type of code is being used in multiple places in various
codec drivers, so put it as a core library.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-30 18:34:38 +01:00
Takashi Iwai 361dab3ec2 ALSA: hda - Call snd_array_init() early and only once
This is a preliminary patch for introducing a protection to access
races of snd_array instances.  Call snd_array_init() appropriately
at the initialization time and don't call it twice.

Also the allocations of codec-spec structs are cleaned up by helper
functions in patch_sigmatel.c and patch_analog.c.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-28 09:03:39 +01:00
David Henningsson 34ca8d3399 ALSA: hda - Removed unused non-standard name "C/LFE"
A closer look shows that the name is not even used and can be removed.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-09 08:21:20 +01:00
Takashi Iwai ee81abb623 ALSA: hda - Apply a proper chmap for built-in 2.1 speakers
When 2.1 speakers are detected, use the corresponding channel map
instead of the standard map with front+rear surrounds.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-08 17:13:59 +01:00
Takashi Iwai f37bc7a88d ALSA: hda - Give standard "Bass Speaker" mixer for 2.1 speakers
When two built-in speakers are found on the machine, we can suppose
it's rather a 2.1 speaker system with a bass output instead of
front/surround channels.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-08 17:00:37 +01:00
Takashi Iwai d5266125fb ALSA: hda - Add pin fixups for ASUS G75
To parse properly the subwoofer outputs on ASUS G75 laptop with VT1802
codec, correct the default configurations of speaker pins 0x24 and
0x33.

Reported-by: Massimo Del Fedele <max@veneto.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-07 14:42:05 +01:00
Takashi Iwai ef4da45828 ALSA: hda - Fix invalid connections in VT1802 codec
VT1802 codec provides the invalid connection lists of NID 0x24 and
0x33 containing the routes to a non-exist widget 0x3e.  This confuses
the auto-parser.  Fix it up in the driver by overriding these
connections.

Reported-by: Massimo Del Fedele <max@veneto.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-07 14:42:04 +01:00
Takashi Iwai 5b3761954d ALSA: hda - Fix empty DAC filling in patch_via.c
In via_auto_fill_adc_nids(), the parser tries to fill dac_nids[] at
the point of the current line-out (i).  When no valid path is found
for this output, this results in dac = 0, thus it creates a hole in
dac_nids[].  This confuses is_empty_dac() and trims the detected DAC
in later reference.

This patch fixes the bug by appending DAC properly to dac_nids[] in
via_auto_fill_adc_nids().

Reported-by: Massimo Del Fedele <max@veneto.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-07 14:42:00 +01:00