yes, pretty often broken. It sets up wrong values and screws up the
driver.
-The preset model is provided basically to overcome such a situation.
-When the matching preset model is found in the white-list, the driver
-assumes the static configuration of that preset and builds the mixer
-elements and PCM streams based on the static information. Thus, if
-you have a newer machine with a slightly different PCI SSID from the
-existing one, you may have a good chance to re-use the same model.
-You can pass the `model` option to specify the preset model instead of
-PCI SSID look-up.
+The preset model (or recently called as "fix-up") is provided
+basically to overcome such a situation. When the matching preset
+model is found in the white-list, the driver assumes the static
+configuration of that preset with the correct pin setup, etc.
+Thus, if you have a newer machine with a slightly different PCI SSID
+(or codec SSID) from the existing one, you may have a good chance to
+re-use the same model. You can pass the `model` option to specify the
+preset model instead of PCI (and codec-) SSID look-up.
What `model` option values are available depends on the codec chip.
Check your codec chip from the codec proc file (see "Codec Proc-File"
different `model` option values. If you have any luck, some of them
might suit with your device well.
-Some codecs such as ALC880 have a special model option `model=test`.
-This configures the driver to provide as many mixer controls as
-possible for every single pin feature except for the unsolicited
-events (and maybe some other specials). Adjust each mixer element and
-try the I/O in the way of trial-and-error until figuring out the whole
-I/O pin mappings.
+There are a few special model option values:
+- when 'nofixup' is passed, the device-specific fixups in the codec
+ parser are skipped.
+- when `generic` is passed, the codec-specific parser is skipped and
+ only the generic parser is used.
-Note that `model=generic` has a special meaning. It means to use the
-generic parser regardless of the codec. Usually the codec-specific
-parser is much better than the generic parser (as now). Thus this
-option is more about the debugging purpose.
Speaker and Headphone Output
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(separated with a space).
hints::
Shows / stores hint strings for codec parsers for any use.
- Its format is `key = value`. For example, passing `hp_detect = yes`
- to IDT/STAC codec parser will result in the disablement of the
- headphone detection.
+ Its format is `key = value`. For example, passing `jack_detect = no`
+ will disable the jack detection of the machine completely.
init_pin_configs::
Shows the initial pin default config values set by BIOS.
driver_pin_configs::
------------------------------------------------------------------------
+Hint Strings
+~~~~~~~~~~~~
+The codec parser have several switches and adjustment knobs for
+matching better with the actual codec or device behavior. Many of
+them can be adjusted dynamically via "hints" strings as mentioned in
+the section above. For example, by passing `jack_detect = no` string
+via sysfs or a patch file, you can disable the jack detection, thus
+the codec parser will skip the features like auto-mute or mic
+auto-switch. As a boolean value, either `yes`, `no`, `true`, `false`,
+`1` or `0` can be passed.
+
+The generic parser supports the following hints:
+
+- jack_detect (bool): specify whether the jack detection is available
+ at all on this machine; default true
+- inv_jack_detect (bool): indicates that the jack detection logic is
+ inverted
+- trigger_sense (bool): indicates that the jack detection needs the
+ explicit call of AC_VERB_SET_PIN_SENSE verb
+- inv_eapd (bool): indicates that the EAPD is implemented in the
+ inverted logic
+- pcm_format_first (bool): sets the PCM format before the stream tag
+ and channel ID
+- sticky_stream (bool): keep the PCM format, stream tag and ID as long
+ as possible; default true
+- spdif_status_reset (bool): reset the SPDIF status bits at each time
+ the SPDIF stream is set up
+- pin_amp_workaround (bool): the output pin may have multiple amp
+ values
+- single_adc_amp (bool): ADCs can have only single input amps
+- auto_mute (bool): enable/disable the headphone auto-mute feature;
+ default true
+- auto_mic (bool): enable/disable the mic auto-switch feature; default
+ true
+- line_in_auto_switch (bool): enable/disable the line-in auto-switch
+ feature; default false
+- need_dac_fix (bool): limits the DACs depending on the channel count
+- primary_hp (bool): probe headphone jacks as the primary outputs;
+ default true
+- multi_cap_vol (bool): provide multiple capture volumes
+- inv_dmic_split (bool): provide split internal mic volume/switch for
+ phase-inverted digital mics
+- indep_hp (bool): provide the independent headphone PCM stream and
+ the corresponding mixer control, if available
+- add_stereo_mix_input (bool): add the stereo mix (analog-loopback
+ mix) to the input mux if available
+- add_out_jack_modes (bool): add "xxx Jack Mode" enum controls to each
+ output jack for allowing to change the headphone amp capability
+- add_in_jack_modes (bool): add "xxx Jack Mode" enum controls to each
+ input jack for allowing to change the mic bias vref
+- power_down_unused (bool): power down the unused widgets
+- mixer_nid (int): specifies the widget NID of the analog-loopback
+ mixer
+
+
Early Patching
~~~~~~~~~~~~~~
When CONFIG_SND_HDA_PATCH_LOADER=y is set, you can pass a "patch" as a
0x20 0x400 0xff
[hint]
- hp_detect = yes
+ jack_detect = no
------------------------------------------------------------------------
The file needs to have a line `[codec]`. The next line should contain
power-saving. See /sys/module/snd_hda_intel/parameters/power_save to
check the current value. If it's non-zero, the feature is turned on.
+The recent kernel supports the runtime PM for the HD-audio controller
+chip, too. It means that the HD-audio controller is also powered up /
+down dynamically. The feature is enabled only for certain controller
+chips like Intel LynxPoint. You can enable/disable this feature
+forcibly by setting `power_save_controller` option, which is also
+available at /sys/module/snd_hda_intel/parameters directory.
+
Tracepoints
~~~~~~~~~~~
- git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
The master branch or for-next branches can be used as the main
-development branches in general while the HD-audio specific patches
-are committed in topic/hda branch.
+development branches in general while the development for the current
+and next kernels are found in for-linus and for-next branches,
+respectively.
If you are using the latest Linus tree, it'd be better to pull the
above GIT tree onto it. If you are using the older kernels, an easy
cached in the driver, and thus changing the widget amp value directly
via hda-verb won't change the mixer value.
-The hda-verb program is found in the ftp directory:
+The hda-verb program is included now in alsa-tools:
+
+- git://git.alsa-project.org/alsa-tools.git
+
+Also, the old stand-alone package is found in the ftp directory:
- ftp://ftp.suse.com/pub/people/tiwai/misc/
See README file in the tarball for more details about hda-emu
program.
+
+
+hda-jack-retask
+~~~~~~~~~~~~~~~
+hda-jack-retask is a user-friendly GUI program to manipulate the
+HD-audio pin control for jack retasking. If you have a problem about
+the jack assignment, try this program and check whether you can get
+useful results. Once when you figure out the proper pin assignment,
+it can be fixed either in the driver code statically or via passing a
+firmware patch file (see "Early Patching" section).
+
+The program is included in alsa-tools now:
+
+- git://git.alsa-project.org/alsa-tools.git
+
projects / profile / ivi / kernel-adaptation-intel-automotive.git / commitdiff