Commit graph

6057 commits

Author SHA1 Message Date
Vitaliy Kulikov
d009f3deb7 ALSA: hda - load EQ params into IDT codec on HP bNB13 systems
Adds linear EQ filtering for integrated speaker protection

Signed-off-by: Vitaliy Kulikov <vitaliy.kulikov@idt.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-15 11:57:54 +01:00
Takashi Iwai
d183b4fc46 ALSA: hda - Don't clear the power state at snd_hda_codec_reset()
snd_hda_codec_reset() is called either in resetting the whole setup at
error paths or hwdep clear/reconfig sysfs triggers.  But all of these
don't assume that the power has to be off, rather they want to keep
the power state unchanged (e.g. reconfig_codec() calls the power
up/down by itself).  Thus, unconditionally clearing the power state in
snd_hda_codec_reset() leads to the inconsistency, confuses the further
operation.   This patch gets rid of the lines doing that bad thing.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-13 17:02:30 +01:00
Takashi Iwai
f710a9fbd3 ALSA: hda - Control EAPD for Master volume on Lenovo N100
Similarly as other laptops with AD1981 & co codecs, we can control
EAPD on AD1986A more safely depending on the Master switch, in order
to save some power.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-13 09:44:33 +01:00
Takashi Iwai
7a3e6107f9 ALSA: hda - Don't turn off EAPD for headphone on Lenovo N100
The only EAPD on AD1986A is on NID 0x1b where usually the speaker.
But this doesn't control only the speaker amp but may influence on all
outputs, e.g. Lenovo N100 laptop seems to have this issue.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-13 09:39:08 +01:00
Takashi Iwai
468ac41304 ALSA: hda - Check keep_eapd_on before inv_eapd
We don't change the EAPD bit in set_pin_eapd() if keep_eapd_on flag is
set by the codec driver and enable is false.  But, we also apply the
flipping of enable value according to inv_eapd flag in the same
function, and this confused the former check, handled as if it's
turned ON.  The inverted EAPD check must be applied after keep_eapd_on
check, instead.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-12 11:36:00 +01:00
David Henningsson
5959a6bc11 ALSA: hda - Fix Line Out automute on Realtek multifunction jacks
In case there is both a multifunction headset jack and a Line Out
jack, automuting was not working properly from the Line Out jack.
This patch fixes that issue.

Cc: stable@vger.kernel.org (3.10+)
BugLink: https://bugs.launchpad.net/bugs/1250377
Tested-by: Cyrus Lien <cyrus.lien@canonical.com>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-12 11:35:31 +01:00
Anssi Hannula
679605c768 ALSA: hda - hdmi: Fix wrong baseline length in ATI/AMD generated ELD
According to the HDA specification the baseline ELD length is counted in
DW of 4 bytes instead of in bytes.

Fix the code accordingly.

Baseline length is not used by the kernel so only the ELD exported to
userspace was affected. No issues have been reported.

v2: Fixed so that eld_size is adjusted upwards accordingly as well.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-11 17:08:39 +01:00
Anssi Hannula
a5666824ce ALSA: hda - hdmi: Skip out-of-range latency values in AMD ELD generator
The ATI/AMD video/audio latencies are specified in apparent HDMI VSDB
format. In this format values above 251 are not valid (or stream
component is not supported - 255), but no checking is performed since
this was not mentioned in the AMD HDA verbs specification.

Check that the latencies are valid before using them, and add a comment
describing the formats.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-11 17:08:04 +01:00
Anssi Hannula
13122e6ebf ALSA: hda - hdmi: Add error-checking to some codec reads
Add error checks to HBR status reads (both generic and ATI/AMD) and
ATI/AMD codec reads for ELD generation.

Unchecked errors in these just caused more errors later on (invalid
codec writes for the HBR ones and ELD parsing errors for the ATI/AMD ELD
ones), but it is better to catch them earlier.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-11 17:07:49 +01:00
Anssi Hannula
94908a39ce ALSA: hda - hdmi: Use TFx channel positions instead of FxH
Channel map positions FLH, FCH, FRH duplicate positions TFL, TFC, TFR.
Both are the speakers above the front speakers (CEA uses "high" and USB
audio uses "top" nomenclature).

Since the USB audio code has used the TFx positions since v3.8
(04324ccc75, "ALSA: usb-audio: add channel map support") but the HDMI
code only just started using FxH in a5b7d510b2 ("ALSA: hda -
hdmi: Fix channel maps with less common speakers") which is not yet in
any released kernel, standardize on TFx instead.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-11 17:06:40 +01:00
Takashi Iwai
0c52db8cca ALSA: hda - Control SPDIF out pin on MacBookPro 11,2
The SPDIF output MBP11,2 requires the pin control to be set/cleared
for turning on/off the optical SPDIF.  The red light turns off only
when the corresponding pin control is cleared (or powered to D3).

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=64401
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-11 16:22:04 +01:00
Kailang Yang
9a22a8f558 ALSA: hda/realtek - Add new codec ALC255/ALC3234 UAJ supported
New codec ALC255/ALC3234 support multifunction jacks.
It used for menual select the input device.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-08 13:52:59 +01:00
Takashi Iwai
885845d785 ALSA: hda - Apply MacBook fixups for CS4208 correctly
The commit [8fe7b65ab4: ALSA: hda - Apply GPIO setup for MacBooks
with CS4208] added a fixup entry matching with the vendor id 0x106b.
This broke the fixups for previous MBA6,1 and 6,2, since the PCI SSID
vendor id matches before evaluating the codec SSIDs.

We had a similar issue on Mac with Sigmatel codecs, and solve this
problem again similarly, by introducing a skeleton entry matching with
the all MacBooks, then remap to the right one.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=64401
Fixes: 8fe7b65ab4 ('ALSA: hda - Apply GPIO setup for MacBooks with CS4208')
Cc: <stable@vger.kernel.org> [v3.12+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-08 13:50:56 +01:00
Kailang Yang
380702192f ALSA: hda/realtek - Make fixup regs persist after resume
Upon suspend / resume, the fixup register settings are lost because
sending HDA_FIXUP_ACT_PRE_PROBE is not part of the resume path. Instead,
write our registers in response to the HDA_FIXUP_ACT_INIT, which happens
after initial probe and upon resume.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-08 07:43:45 +01:00
Joe Perches
3b70a67da0 ALSA: hda_intel: ratelimit "spurious response" message
dmesg here has a 100+ consecutive lines of:

[ 1464.219446] hda-intel 0000:00:14.2: spurious response 0x0:0x0, last cmd=0x170500
[ 1464.219451] hda-intel 0000:00:14.2: spurious response 0x0:0x0, last cmd=0x170500
[ 1464.219454] hda-intel 0000:00:14.2: spurious response 0x0:0x0, last cmd=0x170500
...

Ratelimit the message to reduce the dmesg log noise.

Coalesce the format while at it.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 21:22:23 +01:00
Takashi Iwai
aff747ebbf ALSA: hda - Get rid of AMD HDMI exception in hdmi_present_sense()
Since the recent fake ELD patches, we can remove the check for AMD
HDMI in hdmi_present_sense() and decide the return value from
eld_valid value.

Suggested by Anssi Hannula.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 16:39:37 +01:00
Takashi Iwai
512a4cb9e7 ALSA: ice1724: Fix compile warning with CONFIG_PROC_FS=n
Just added a missing ifdef:
  sound/pci/ice1712/quartet.c:210:14: warning: 'get_binary' defined but not used [-Wunused-function]

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 15:44:11 +01:00
David Henningsson
464837a7bc ALSA: hda - block HDMI jack reports while repolling
This fixes a race condition in case several monitors are being
repolled in parallel.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 14:03:33 +01:00
David Henningsson
0f568959de ALSA: hda - Add a block_report flag to jacks
If the jack should not be reported to userspace (e g, because it is
in some transitional state), one can set this flag.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 14:03:17 +01:00
Takashi Iwai
efe4710860 ALSA: hda - Delay HDMI presence reports while waiting for ELD information
There is a small gap between the jack detection unsolicited event and
the time the ELD is updated.  When user-space queries the HDMI ELD
immediately after receiving the notification, it might fail because of
this gap.

For avoiding such a problem, this patch tries to delay the HDMI jack
detect notification until ELD information is fully updated.  The
workaround is imperfect, but good enough as a starting point.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 14:02:49 +01:00
David Henningsson
ad8ff99e6b ALSA: hda - Another Dell headset quirk
This machine has a multi-function headset jack.

BugLink: https://bugs.launchpad.net/bugs/1248856
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 09:53:11 +01:00
Takashi Iwai
487a588d09 ALSA: hda - Add pincfg fixup for ASUS W5A
BIOS on ASUS W5A laptop with ALC880 codec doesn't provide any pin
configurations, so we have to set up all pins manually.

Reported-and-tested-by: nb <nb@dagami.org>
Cc: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 07:35:31 +01:00
Takashi Iwai
8f42d76987 ALSA: hda - Add support for CX20952
It's a superset of the existing CX2075x codecs, so we can reuse the
existing parser code.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-07 07:35:26 +01:00
Takashi Iwai
293db84270 ALSA: lx6464es: Fix pointer cast compile warnings
The warnings are really harmless but annoying.  Since they are only
about debug prints, and it's at most 32bit DMA, let's just cast to
unsigned long.

  sound/pci/lx6464es/lx6464es.c:457:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  sound/pci/lx6464es/lx_core.c:1195:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-06 18:00:29 +01:00
David Henningsson
8e35cd4ac9 ALSA: HDA - Limit mic boost and add mute LED for an HP machine
This machine has a mute LED as well as a noisy internal mic. Hence it needs
quirks for both limiting the mic boost as well as enabling the LED.

BugLink: https://bugs.launchpad.net/bugs/1248476
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-06 12:11:16 +01:00
David Henningsson
d5b6b65e75 ALSA: hda - Make sure mute LEDs stay on during runtime suspend (Realtek)
Some HP machines with Realtek codecs have mute LEDs connected to VREF pins.
However when these go into runtime suspend, the pin powers down and its
pin control is disabled, thus disabling the LED too.

This patch fixes that issue by making sure that the pin stays in D0 with
correct pin control.

Cc: stable@kernel.org
BugLink: https://bugs.launchpad.net/bugs/1248465
Tested-by: Franz Hsieh <franz.hsieh@canonical.com>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-06 11:08:12 +01:00
Takashi Iwai
29fa957804 ALSA: ctxfi: Use WARN_ON() instead of BUG_ON()
BUG_ON() is rather useless for debugging as it leads to panic().
Use WARN_ON() and handle the error cases accordingly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-06 08:34:49 +01:00
Takashi Iwai
791b3f596e ALSA: intel8x0: Fix chmap application
The playback chmap for multi-channel stream hasn't been properly added
to intel8x0 devices due to the wrong condition.

Reported-by: Raymond Yau <superquad.vortex2@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-06 08:14:21 +01:00
Takashi Iwai
8fe7b65ab4 ALSA: hda - Apply GPIO setup for MacBooks with CS4208
Apply the existing GPIO0 fixup as default for MacBooks with CS4208
codec.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=64401
Cc: <stable@vger.kernel.org> [v3.12+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-06 08:08:53 +01:00
Takashi Iwai
fab1285a51 ALSA: hda - Name Haswell HDMI controllers better
"HDA Intel MID" is no correct name for Haswell HDMI controllers.
Give them a better name, "HDA Intel HDMI".

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-05 17:54:05 +01:00
Takashi Iwai
33499a15c2 ALSA: hda - Force buffer alignment for Haswell HDMI controllers
Haswell HDMI audio controllers seem to get stuck when unaligned buffer
size is used.  Let's enable the buffer alignment for the corresponding
entries.

Since AZX_DCAPS_INTEL_PCH contains AZX_DCAPS_BUFSIZE that disables the
buffer alignment forcibly, define AZX_DCAPS_INTEL_HASWELL and put the
necessary AZX_DCAPS bits there.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60769
Reported-by: Alexander E. Patrakov <patrakov@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-05 17:38:20 +01:00
David Henningsson
b67ae3f1c9 ALSA: hda - Enable Thinkpad mute/micmute LEDs for Realtek
Same as we already have for Conexant. Right now it's only enabled
for one machine.

Tested-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-05 13:42:21 +01:00
Clemens Ladisch
bbaa0d6665 ALSA: hda: add device IDs for AMD Evergreen/Northern Islands HDMI
The device IDs of the AMD Cypress/Juniper/Redwood/Cedar/Cayman/Antilles/
Barts/Turks/Caicos HDMI HDA controllers weren't added explicitly
because the generic entry works, but it made the device appearing as
"Generic", and people are confused as if it's no proper HDMI
controller.  Add them so that the name shows up properly as "ATI HDMI"
instead of "Generic".

According to Takashi's tests and the lack of complaints, these devices
work fine without disabling snooping.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-05 10:26:56 +01:00
Takashi Iwai
a1114a8c68 ALSA: hda - Introduce the bitmask for excluding output volume
Add a bitmask to hda_gen_spec indicating NIDs to exclude from the
possible volume controls.  That is, when the bit is set, the NID
corresponding to the bit won't be picked as an output volume control
any longer.

Basically this is just a band-aid for working around the issue found
with CS4208 codec, where only the headphone pin has a volume AMP with
different dB steps.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60811
Cc: <stable@vger.kernel.org> [v3.12+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-05 07:49:41 +01:00
Takashi Iwai
485e3e0cdf ALSA: hda - Add sanity check of vmaster slave dB steps
Check whether all vmaster slaves have the same dB steps.  Otherwise
the behavior would become inconsistent.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-05 07:48:04 +01:00
Takashi Iwai
a4e7a12168 ALSA: hda - Fix possible zero-division
Check the TLV db scale result before actually dividing in vmaster
slave init code.  Also mask TLV_DB_SCALE_MUTE bit so that the right
value is obtained even if this bit is set by the codec driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-05 07:47:52 +01:00
Takashi Iwai
24eff328f6 ALSA: hda - Enable SPDIF for Acer TravelMate 6293
BIOS on Acer TravelMate 6293 doesn't set up the SPDIF output pin
correctly as default, so enable it via a fixup entry.

Reported-and-tested-by: Hagen Heiduck <heiduck.suse@fmail.postpro.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-04 21:11:04 +01:00
James Ralston
4eeca499be ALSA: hda - Add Device IDs for Intel Wildcat Point-LP PCH
This patch adds the HD Audio Device IDs for the Intel Wildcat Point-LP PCH.

Signed-off-by: James Ralston <james.d.ralston@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-04 18:31:54 +01:00
Mengdong Lin
300016b960 ALSA: hda - rename function not_share_unassigned_cvt()
The function name not_share_unassigned_cvt() is opposite to what it does.
This patch renames it to intel_not_share_assigned_cvt(), and addes comments
to explain why some Intel display codecs need this workaround.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-04 14:22:08 +01:00
Anssi Hannula
611885bc96 ALSA: hda - hdmi: Disallow unsupported 2ch remapping on NVIDIA codecs
NVIDIA HDMI codecs do not seem to follow the Audio Sample Packet (ASP)
channel mapping (as set by verb F32h per HDA specification 7.3.3.41)
when playing back 2-channel audio (CEA CA 0x00).

Basically this means that specifying swapped channels for stereo audio
(FR,FL) does not take effect, and e.g. this command plays back on the
wrong channel:
speaker-test -c2 -Dhdmi:CARD=NVidia,DEV=0 -m FR,FL -s1

Multichannel audio is not affected.

This issue has been confirmed to exist on codec 0x10de0015 by me and on
0x10de0040 by Juho Teperi.

Disable 2ch FL/FR channel swapping on all NVIDIA HDMI codecs that use
the standard HDA channel mapping system. Since this is a very minor
functionality loss, we err on the side of disabling it for newer codecs
as well until any future testing confirms that this issue has been
fixed.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Helped-by: Juho Teperi <juho.teperi@iki.fi>
Cc: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-04 10:10:28 +01:00
Mengdong Lin
023838542d ALSA: hda - not choose assigned converters for unused pins of Valleyview
For Valleyview display codec, if an unused pin chooses an assgined converter
selected by a used pin, playback on the unused pin can also give sound to the
output device of the used pin. It's because data flows from the same convertor
to the display port of the used pin. This issue is same as Haswell.

So this patch avoids using assinged convertors for unused pins.
The related function haswell_config_cvts() is renamed for code reuse.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-01 10:47:16 +01:00
Takashi Iwai
8e38395360 ALSA: hda - Add extra chmap for 2.1 outputs on ASUS laptops
ASUS N56VZ and N76VZ laptops have a bass speaker but its output comes
only from the right channel.  This patch adds the extra chmap specific
to these models.

Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=846531
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-30 17:41:12 +01:00
Takashi Iwai
8d684b430b Merge branch 'for-linus' into for-next 2013-10-30 17:40:54 +01:00
Takashi Iwai
6fc16e58ad ALSA: hda - Add a fixup for ASUS N76VZ
ASUS N76VZ needs the same fixup as N56VZ for supporting the boost
speaker.

Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=846529
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-30 12:31:35 +01:00
Takashi Iwai
d2e92709e8 ALSA: hda - Disable AA-loopback on ALC283 Chromebook
ALC283-based Chromebook suffers from occasional white noise, and it
turned out that this comes from AA-loopback.  Disable this output path
by just clearing mixer_nid, then the generic parser will skip the
creation of AA-loopback path.

Reported-and-tested-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-30 07:52:44 +01:00
Takashi Iwai
9cd5ab9c3c ALSA: lola: Fix uninitialized variable access in error message
The FUNCTION_TYPE parameter isn't associated with any NID, thus
showing the uninitialized nid in the error message is simply
nonsense.

Spotted by coverity CID 145068.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-29 16:51:36 +01:00
Takashi Iwai
4c88b7f287 ALSA: ice1724: Fix uninitialized variable access
Spotted by coverity CIDs 751505 and 751506.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-29 16:46:36 +01:00
Takashi Iwai
2026d24ef2 ALSA: rme96: Return error code in PCM copy ops
Just pass the error code returned from copy_from_user_toio() and
copy_to_user_fromio() helpers.

Spotted by coverity CID 114119.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-29 16:04:37 +01:00
Takashi Iwai
329bbd9ba7 ALSA: ali5451: Drop unused variable
The variable runtime is never used, and this might be even a source of
NULL-dereference.  Nothing better than killing it.

Spotted by coverity CID 100862.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-29 15:42:29 +01:00
Takashi Iwai
9bd0f5c042 ALSA: ad1889: Fix right attenuation proc output
The right attenuation bits aren't needed to be shifted.

Spotted by coverity CID 11427.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-29 15:39:37 +01:00