Commit Graph

320 Commits

Author SHA1 Message Date
Pierre-Louis Bossart
2ae66c2655 ALSA: hda: option to enable arbitrary buffer/period sizes
Add new parameter to disable rounding of buffer/period sizes to
multiples of 128 bytes. This is more efficient in terms of memory
access but isn't required by the HDA spec and prevents users from
specifying exact period/buffer sizes. For example for 44.1kHz, a
period size set to 20ms will be rounded to 19.59ms.

Tested and enabled on Intel HDA controllers. Option is disabled by
default for other controllers.

Tested-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-08-04 17:44:36 +02:00
Takashi Iwai
76531d4166 Merge branch 'topic/hda' into for-linus 2011-07-22 08:43:27 +02:00
Takashi Iwai
acfa634f7e ALSA: hda - Add Kconfig for the default buffer size
Add a Kconfig entry to specify the default buffer size.
Distros using PulseAudio can choose a larger value here.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-07-12 17:31:46 +02:00
David Henningsson
b13e552d37 ALSA: HDA: Remove redundant LPIB quirks for ATI chipset
Now that we have changed the position_fix default for ATI and AMD
to be LPIB (see commit 50e3bbf989), we can remove the quirks that
were added for ATI chipsets.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-17 18:48:23 +02:00
Takashi Iwai
934c2b6d0c ALSA: use KBUILD_MODNAME for request_irq argument in sound/pci/*
The name argument of request_irq() appears in /proc/interrupts, and
it's quite ugly when the name entry contains a space or special letters.
In general, it's simpler and more readable when the module name appears
there, so let's replace all entries with KBUILD_MODNAME.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-10 16:36:37 +02:00
Takashi Iwai
3733e424c4 ALSA: Use KBUILD_MODNAME for pci_driver.name entries
The convention for pci_driver.name entry in kernel drivers seem to be
the module name or equivalent ones.  But, so far, almost all PCI sound
drivers use more verbose name like "ABC Xyz (12)", and these are fairly
confusing when appearing as a file name.

This patch converts the all pci_driver.name entries in sound/pci/* to
use KBUILD_MODNAME for more unified appearance.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-10 16:20:20 +02:00
Takashi Iwai
8b0bd2266f ALSA: hda - Fix SSYNC register value for non-Intel controllers
SSYNC register was once defined as 0x34-37 in the old Intel datasheet,
but corrected later to 0x38-3b.  For fixing the register usage, a new
bit-flag is introduced for indicating the old ICH SSYNC register, and
ICH* PCI entries are added explicitly to enable this quirk.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-10 15:00:07 +02:00
Takashi Iwai
b4a655e81d ALSA: hda - Judge playback stream from stream id in azx_via_get_position()
Instead of checking the azx_dev index with a fixed number (4), check
the stream direction of the assigned substream.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-07 12:26:56 +02:00
Takashi Iwai
a810364a04 ALSA: hda - Handle -1 as invalid position, too
When reading from the position-buffer results in -1, handle as it's
invalid and falls back to LPIB mode as well as 0.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-07 12:23:23 +02:00
Stephen Warren
7c93597627 ALSA: hda: Allow multple SPDIF controls per codec
Currently, the data that backs the kcontrols created by
snd_hda_create_spdif_out_ctls is stored directly in struct hda_codec. When
multiple sets of these controls are stored, they will all manipulate the
same data, causing confusion. Instead, store an array of this data, one
copy per converter, to isolate the controls.

This patch would cause a behavioural change in the case where
snd_hda_create_spdif_out_ctls was called multiple times for a single codec.
As best I can tell, this is never the case for any codec.

This will be relevant at least for some HDMI audio codecs, such as the
NVIDIA GeForce 520 and Intel Ibex Peak. A future change will modify the
driver's handling of those codecs to create multiple PCMs per codec. Note
that this issue isn't affected by whether one creates a PCM-per-converter
or PCM-per-pin; there are multiple of both within a single codec in both
of those codecs.

Note that those codecs don't currently create multiple PCMs for the codec
due to the default HW mux state of all pins being to point at the same
converter, hence there is only a single converter routed to any pin, and
hence only a single PCM.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-06 12:48:59 +02:00
Linus Torvalds
46f2cc8051 ALSA: fix hda AZX_DCAPS_NO_TCSEL quirk check in driver_caps
Commit 9477c58e33 ("ALSA: hda - Reorganize controller quriks with bit
flags") changed the driver type compares into various quirk bits.
However, the check for AZX_DCAPS_NO_TCSEL got reverted: instead of
clearing TCSEL for chipsets that have that standard capability, it
cleared then when the NO_TCSEL bit was set.

This can lead to noise and repeated sounds - a weird "echo" behavior.
As the comment just above says: "Ensuring these bits are 0 clears
playback static on some HD Audio codecs".  Which is definitely true at
least on my Core i5 Westmere system.

Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-27 19:45:28 -07:00
Takashi Iwai
9477c58e33 ALSA: hda - Reorganize controller quriks with bit flags
Introduce bit-flags indicating the necessary controller quirks, and
set them in pci driver_data field.  This simplifies the checks in the
driver code and avoids the pci-id lookup in different places.

Also, this patch adds the PCI ID entry for AMD Hudson.  AMD Hudson
requires a similar workaround like ATI SB while other generic ATI and
AMD controllers don't need but some ATI-HDMI quirks.  So, we need a
different entry for Hudson.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-05-26 14:43:07 +02:00
Takashi Iwai
50e3bbf989 ALSA: hda - Use LPIB for ATI/AMD chipsets as default
ATI and AMD chipsets seem not providing the proper position-buffer
information, and it also doesn't provide FIFO register required by
VIACOMBO fix.  It's better to use LPIB for these.

Reported-by: David Henningsson <david.henningsson@canonical.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-05-20 16:29:09 +02:00
Takashi Iwai
314c3ff476 Revert "ALSA: hda - Use position_fix=3 as default for AMD chipsets"
This reverts commit 447ee6a7cb.

The workaround introduced by this commit seems bogus.
The AMD chipsets don't provide proper position-buffer nor FIFO value
required by VIACOMBO fix.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-05-20 16:27:02 +02:00
Takashi Iwai
20c304ed84 ALSA: hda - Enable snoop bit for AMD controllers
AMD Hudson controllers give noisy outputs when the buffer data is
rewritten on the fly as PulseAudio does.  This seems fixed by the
snoop bit enabled just like ATI chipset.

Also, disable 64bit DMA as now, to be sure.
We can revisit this later.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-05-17 18:41:25 +02:00
Takashi Iwai
447ee6a7cb ALSA: hda - Use position_fix=3 as default for AMD chipsets
AMD chipsets often behave pretty badly regarding the DMA position
reporting.  It results in the bad quality audio recording.
Using position_fix=3 works well in general for them, so let's enable
it as default for AMD.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-05-04 18:28:50 +02:00
Takashi Iwai
d507cd668a ALSA: hda - Enable sync_write workaround for AMD generically
The workaround for AMD chipset via sync_write flag seems needed for
machines with Realtek codecs.  So, it's better to activate it
generically in hda_intel.c from the beginning.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-04-26 15:33:43 +02:00
Seth Heasley
d2edeb7c6f ALSA: hda - ALSA HD Audio patch for Intel Panther Point DeviceIDs
This patch adds the HD Audio Controller DeviceIDs for the Intel Panther Point PCH.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-04-20 21:03:48 +02:00
Adam Lackorzynski
a09e89f67c ALSA: hda: Prevent writing ICH6_PCIREG_TCSEL on AMD systems
azx_init_pci() always writes PCI config register ICH6_PCIREG_TCSEL
although this looks to be only defined on Intel systems and has a
different meaning on AMD systems. On AMD systems the PCI interrupt pin
control register is modified instead.

Since the meaning of offset 0x44 in device specific configuration space is
unknown for devices by other vendors, we only exclude AMD systems to
retain the current behaviour.

Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-03-10 17:44:34 +01:00
David Henningsson
b540afc2b3 ALSA: HDA: Add position_fix quirk for an Asus device
The bug reporter claims that position_fix=1 is needed for his
microphone to work. The controller PCI vendor-id is [1002:4383] (rev 40).

Reported-by: Kjell L.
BugLink: http://bugs.launchpad.net/bugs/718402
Cc: stable@kernel.org
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-02-14 22:52:24 +01:00
Takashi Iwai
41a63f18d3 ALSA: hda - Don't handle empty patch files
When an empty string is passed to patch option, the driver should
ignore it.  Otherwise it gets an error by trying to load it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-02-10 17:39:20 +01:00
Takashi Iwai
321051f5da Merge branch 'fix/hda' into for-linus 2011-01-18 07:44:55 +01:00
Bankim Bhavsar
0f0714c5ed ALSA: hda - Add support for VMware controller
Add the new PCI ID 0x15ad and device ID 0x1977 for VMware HDAudio
Controller.

[changed to use AZX_DRIVER_GENERIC by tiwai]

Signed-off-by: Bankim Bhavsar <bbhavsar@vmware.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-01-18 07:43:36 +01:00
Takashi Iwai
e38302f782 Merge branch 'topic/misc' into for-linus 2011-01-13 08:37:14 +01:00
Daniel T Chen
e03fa055bc ALSA: hda: Use LPIB quirk for Dell Inspiron m101z/1120
Sjoerd Simons reports that, without using position_fix=1, recording
experiences overruns. Work around that by applying the LPIB quirk
for his hardware.

Reported-and-tested-by: Sjoerd Simons <sjoerd@debian.org>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-12-30 13:26:19 +01:00
Daniel T Chen
dd5a089edf ALSA: hda: Use position_fix=1 for Acer Aspire 5538 to enable capture on internal mic
BugLink: https://launchpad.net/bugs/685161

The reporter of the bug states that he must use position_fix=1 to enable
capture for the internal microphone, so set it for his machine's PCI
SSID.  Verified using 2.6.35 and the 2010-12-04 alsa-driver build.

Reported-and-tested-by: Ralph Wabel <rwabel@gmx.net>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-12-06 10:34:09 +01:00
Clemens Ladisch
7bb8fb70c4 ALSA: hda-intel: support for period wakeup disabling
Allow disabling period wakeup interrupts for HDA PCM streams.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@intel.com>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-11-22 08:13:34 +01:00
Takashi Iwai
62b7e5e09b ALSA: hda - Add workarounds for CT-IBG controllers
Creative IBG controllers require the playback stream-tags to be started
from 1, instead of capture+1.  Otherwise the stream stalls.

Reported-by: Wai Yew CHAY <wychay@ctl.creative.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-10-22 17:15:47 +02:00
Takashi Iwai
14d34f166c ALSA: hda - Add some workarounds for Creative IBG
Creative HD-audio controller chips require some workarounds:
 - Additional delay before RIRB response
 - Set the initial RIRB counter to 0xc0

The latter seems to be done in general in Windows driver, so we may
use this value later for all types if it's confirmed to work better.

Reported-by: Wai Yew CHAY <wychay@ctl.creative.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-10-21 09:03:25 +02:00
David Henningsson
bdd9ef24cd ALSA: HDA: Correctly apply position_fix quirks for ATI and VIA controllers
Position_fix quirks for specific machines now override the default
position_fix behavior for all HDA controllers.

BugLink: http://launchpad.net/bugs/465942
BugLink: http://launchpad.net/bugs/580749
BugLink: http://launchpad.net/bugs/587546

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-10-12 13:05:02 +02:00
David Henningsson
4cb3631084 ALSA: HDA: Add position_fix=3 module option, and refactor related code
What was previously known as via_dmapos_patch, and hard-coded to be
used for VIA and ATI controllers, is now configurable through a module
option. The background is that some VIA controllers seem to prefer
via_dmapos_patch to be turned off.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-09-30 14:16:11 +02:00
Otavio Salvador
e35d4b1195 ALSA: hda: add Vortex86MX PCI ids
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-09-27 07:57:31 +02:00
Takashi Iwai
b686453543 ALSA: hda - Reduce pci id list for Intel with class id
Most of Intel controllers work as generic HD-audio without quirks,
and it'll be hopefully so in future.  Let's mark pci id with the
PCI_CLASS_MULTIMEDIA_HD_AUDIO for Intel so that the driver will work
with any new control chips in future.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-09-16 07:35:46 +02:00
Seth Heasley
cea310e8f8 ALSA: hda_intel: ALSA HD Audio patch for Intel Patsburg DeviceIDs
This patch adds the Intel Patsburg (PCH) HD Audio Controller DeviceIDs.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-09-13 08:37:27 +02:00
Takashi Iwai
eb541337b7 ALSA: hda - Make converter setups sticky
So far, we reset the converter setups like the stream-tag, the
channel-id and format-id in prepare callbacks, and clear them in
cleanup callbacks.  This often causes a silence of the digital
receiver for a couple of seconds.

This patch tries to delay the converter setup changes as much as
possible.  The converter setups are cached and aren't reset as long
as the same values are used.  At suspend/resume, they are cleared
to be recovered properly, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-08-06 13:48:11 +02:00
Takashi Iwai
08af495f22 ALSA: hda - More relax for pending period handling
Since the pending periods are often bogus and take long time until
actually processed, it often results in a high CPU usage of the hd-audio
workq.  Overall it's better to have low CPU consumption by avoiding a
too tight loop rather than the wake-up timing accuracy.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-08-03 14:43:07 +02:00
Anssi Hannula
32c168c892 ALSA: hda - Set Stream Type in Stream Format according to AES0
Set bit 15 (Stream Type) of HDA Stream Format to 1 (Non-PCM) when IEC958
channel status bit 1 (AES0 & 0x02) is set to 1 (non-audio).

This is a prequisite for HDMI HBR passthrough.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-08-03 12:53:27 +02:00
Takashi Iwai
e4caa8bab3 Merge branch 'master' of git.alsa-project.org:alsa-kernel into fix/hda 2010-06-02 14:15:10 +02:00
Jaroslav Kysela
edb39935c8 ALSA: hda-intel - fix wallclk variable update and condition
This patch fixes thinko introduced in "last minutes" before commiting
of the last wallclk patch.

It also fixes the condition checking if the first period after last
wallclk update is processed. There is a little rounding error in
period_wallclk.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2010-06-02 13:34:01 +02:00
Daniel T Chen
9f75c1b12c ALSA: hda: Use LPIB for ASUS M2V
BugLink: https://launchpad.net/bugs/587546

Symptom: On the reporter's ASUS M2V, using PulseAudio in Ubuntu 10.04 LTS
results in the PA daemon crashing shortly after attempting playback of an
audio file.

Test case: Using Ubuntu 10.04 LTS (Linux 2.6.32.12), Linux 2.6.33, or
Linux 2.6.34, attempt playback of an audio file while PulseAudio is
active.

Resolution: add SSID for this machine to the position_fix quirk table,
explicitly specifying the LPIB method.

Reported-and-Tested-By: D Tangman
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-06-01 07:48:43 +02:00
Daniel T Chen
b90c076424 ALSA: hda: Use LPIB for another mainboard
BugLink: https://launchpad.net/bugs/580749

Symptom: on the original reporter's VIA VT1708-based board, the
PulseAudio daemon dies shortly after the user attempts to play an audio
file.

Test case: boot from Ubuntu 10.04 LTS live cd; attempt to play an audio
file.

Resolution: add SSID for the original reporter's hardware to the
position_fix quirk table, explicitly specifying the LPIB method.

Reported-and-Tested-By: Harald
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-31 09:23:25 +02:00
Daniel T Chen
dd37f8e865 ALSA: hda: Use LPIB for an ASUS device
BugLink: https://launchpad.net/bugs/465942

Symptom: On the reporter's ASUS device, using PulseAudio in Ubuntu 10.04
LTS results in the PA daemon crashing shortly after attempting to select
capture or to configure the audio hardware profile.

Test case: Using Ubuntu 10.04 LTS (Linux 2.6.32.12), Linux 2.6.33, or
Linux 2.6.34, adjust the HDA device's capture volume with PulseAudio.

Resolution: add SSID for this machine to the position_fix quirk table,
explicitly specifying the LPIB method.

Reported-and-Tested-By: Irihapeti
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-31 09:22:28 +02:00
Daniel T Chen
61bb42c37d ALSA: hda: Use LPIB for a Shuttle device
BugLink: https://launchpad.net/bugs/551949

Symptom: On the reporter's Shuttle device, using PulseAudio in Ubuntu
10.04 LTS results in "popping clicking" audio with the PA crashing
shortly thereafter.

Test case: Using Ubuntu 10.04 LTS (Linux 2.6.32.12), Linux 2.6.33, or
Linux 2.6.34, adjust the HDA device's volume with PulseAudio.

Resolution: add SSID for this machine to the position_fix quirk table,
explicitly specifying the LPIB method.

Reported-and-Tested-By: Christian Mehlis <mehlis@inf.fu-berlin.de>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-29 21:47:59 +02:00
Daniel T Chen
e96d312776 ALSA: hda: Use LPIB for Sony VPCS11V9E
BugLink: https://launchpad.net/bugs/586347

Symptom: On the Sony VPCS11V9E, using GStreamer-based applications with
PulseAudio in Ubuntu 10.04 LTS results in stuttering audio. It appears
to worsen with increased I/O.

Test case: use Rhythmbox under increased I/O pressure. This symptom is
reproducible in the current daily stable alsa-driver snapshots (at least
up until 21 May 2010; later snapshots fail to build from source due to
missing preprocessor directives when compiled against 2.6.32).

Resolution: add SSID for this machine to the position_fix quirk table,
explicitly specifying the LPIB method.

Reported-and-Tested-By: Lauri Kainulainen <lauri@sokkelo.net>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-28 07:51:17 +02:00
Clemens Ladisch
9ef04066b3 ALSA: hda_intel: fix handling of non-completion stream interrupts
Check that the interrupt raised for a stream is actually a buffer
completion interrupt before handling it as one.  Otherwise, memory
errors or FIFO xruns would be interpreted as a pointer update and could
break the stream timing.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-25 20:23:15 +02:00
Daniel T Chen
4e0938dba7 ALSA: hda: Use LPIB for Toshiba A100-259
BugLink: https://launchpad.net/bugs/549560

Symptom: on a significant number of hardware, booting from a live cd
results in capture working correctly, but once the distribution is
installed, booting from the install results in capture not working.

Test case: boot from Ubuntu 10.04 LTS live cd; capture works correctly.
Install to HD and reboot; capture does not work. Reproduced with 2.6.32
mainline build (vanilla kernel.org compile)

Resolution: add SSID for Toshiba A100-259 to the position_fix quirk
table, explicitly specifying the LPIB method.

I'll be sending additional patches for these SSIDs as bug reports are
confirmed.

This patch also trivially sorts the quirk table in ascending order by
subsystem vendor.

Reported-and-Tested-by: <davide.molteni@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-25 08:40:50 +02:00
Daniel T Chen
7a68be94e2 ALSA: hda: Use LPIB for Acer Aspire 5110
BugLink: https://launchpad.net/bugs/583983

Symptom: on a significant number of hardware, booting from a live cd
results in capture working correctly, but once the distribution is
installed, booting from the install results in capture not working.

Test case: boot from Ubuntu 10.04 LTS live cd; capture works correctly.
Install to HD and reboot; capture does not work. Reproduced with 2.6.32
mainline build (vanilla kernel.org compile).

Resolution: add SSID for Acer Aspire 5110 to the position_fix quirk
table, explicitly specifying the LPIB method.

I'll be sending additional patches for these SSIDs as bug reports are
confirmed.

Reported-and-Tested-By: Leo
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-25 08:40:14 +02:00
Jaroslav Kysela
f48f606d9f [ALSA] snd-hda-intel: Improve azx_position_ok()
Add back the zero return value (activate workqueue) when
bdl_pos_adj is nonzero for position check.

Do the position related check only for first next period
using wallclk counter.

Return -1 value (ignore interrupt) when period_bytes
variable is zero.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2010-05-11 12:17:55 +02:00
Jaroslav Kysela
e54637205b [ALSA] snd-hda-intel: use WALLCLK register to check for early irqs
Use 24Mhz WALLCLK register to ignore too early interrupts and
wrong interrupt status. The bad timing confuses the higher ALSA
layer and causes audio skipping. More information about behaviour
and debugging can be found in kernel bz#15912.

https://bugzilla.kernel.org/show_bug.cgi?id=15912

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2010-05-11 10:21:46 +02:00
Shahin Ghazinouri
beaffc3993 ALSA: hda - Fixes distorted recording on US15W chipset
The HDA controller in US15W (Poulsbo) reports inaccurate position values
for capture streams when using the LPIB read method, resulting in
distorted recordings.

However, using the position buffer is broken for playback streams,
resulting in a fallback to the LPIB method with the current driver.
This patch works around the issue by independently detecting the read
position method for capture and playback streams.

The patch will not have any effect if the position fix method is
explicitly set.

[Code simplified by tiwai]

Signed-off-by: Shahin Ghazinouri <shahin.ghazinouri@pelagicore.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-11 08:21:33 +02:00