Commit Graph

29 Commits

Author SHA1 Message Date
Takashi Iwai
23c18d4bfd ALSA: control: Provide a helper to look for the preferred subdevice
Instead of open-coding the search over the control file loop, provide
a helper function for the preferred subdevice assigned to the current
process.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-02-02 14:21:21 +01:00
Takashi Iwai
0cea76f339 ALSA: control: Define SNDRV_CTL_TLV_OP_* constants
Instead of hard-coded magic numbers, define constants for op_flag to
tlv callbacks.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-07-15 16:31:01 +02:00
Takashi Iwai
1ca2f2ec9e ALSA: vmaster: Add snd_ctl_sync_vmaster() helper function
Introduce a new helper function, snd_ctl_sync_vmaster(), which updates
the slave put callbacks forcibly as well as calling the hook.  This
will be used in the upcoming patch in HD-audio codec driver for
toggling the mute in vmaster slaves.

Along with the new function, the old snd_ctl_sync_vmaster_hook() is
replaced as a macro calling with the argument hook_only=true.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-06-24 15:51:54 +02:00
Yacine Belkadi
eb7c06e8e9 ALSA: add/change some comments describing function return values
script/kernel-doc reports the following type of warnings (when run in verbose
mode):

Warning(sound/core/init.c:152): No description found for return value of
'snd_card_create'

To fix that:
- add missing descriptions of function return values
- use "Return:" sections to describe those return values

Along the way:
- complete some descriptions
- fix some typos

Signed-off-by: Yacine Belkadi <yacine.belkadi.1@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-03-12 08:32:53 +01:00
Takashi Iwai
cb3f2adc03 Merge branch 'topic/asoc' into for-linus 2012-03-18 18:22:37 +01:00
Takashi Iwai
2ad787e9aa ALSA: Add a hook capability to vmaster controls
This patch adds a hook to vmaster control to be called at each time
when the master value is changed.  It'd be handy for an additional
mute LED control following the Master switch, for example.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-03-12 13:58:54 +01:00
Mark Brown
5ac2ba9452 ALSA: core: Constify the name in new kcontrols
We never modify it and this lets us use a const string as the name without
warnings.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Liam Girdwood <lrg@ti.com>
2012-02-17 08:09:48 -08:00
Takashi Iwai
35be544af3 ALSA: Introduce common helper functions for jack-detection control
Now move the helper function for creating and reporting the jack-detection
to the common place.  The driver that needs this functionality should
select CONFIG_SND_KCTL_JACK kconfig.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-11-16 11:14:03 +01:00
Takashi Iwai
02e5fbf622 Merge branch 'topic/misc' into for-linus 2011-05-22 10:01:29 +02:00
Lucas De Marchi
25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
Dimitris Papastamos
66b5b9722b ALSA: Add snd_ctl_replace() to dynamically replace a control
Add a function to dynamically replace a given control.  If the
control does not already exist, a third parameter is used to determine
whether to actually add that control.  This is useful in cases where
downloadable firmware at runtime can add or replace existing controls.
A separate patch needs to be made to allow ALSA Mixer to render the
replaced controls on the fly.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-03-22 13:22:39 +01:00
Takashi Iwai
3cbdd75331 ALSA: Add snd_ctl_activate_id()
Added a new API function snd_ctl_activate_id() for activate / inactivate
the control element dynamically.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-03-11 10:49:15 +00:00
Clemens Ladisch
9600732b6c ALSA: core, oxygen, virtuoso: add an enum control info helper
Introduce the helper function snd_ctl_enum_info() to fill out the
elem_info fields for an enumerated control.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-01-10 16:46:53 +01:00
Clemens Ladisch
25d27eded1 control: use reference-counted pid
Instead of storing the PID number, take a reference to the task's pid
structure.  This protects against duplicates due to PID overflows, and
using pid_vnr() ensures that the PID returned by snd_ctl_elem_info() is
correct as seen from the current namespace.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-06 14:32:06 +01:00
Clemens Ladisch
31cef7076e control: remove snd_konctrol_volatile::owner_pid field
We do not need to save the ID of the process that locked a control
because that information is already available in the owner's file data.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-06 14:32:03 +01:00
Takashi Iwai
79c7cdd544 ALSA: Add kernel-doc comments to vmaster stuff
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-03-09 15:10:01 +01:00
Takashi Iwai
f5b1db6342 ALSA: add snd_ctl_add_slave_uncached()
Added snd_ctl_add_slave_uncached() function to add a slave element
with volatile controls.  The values of normal slave elements are
supposed to be cachable, i.e. they are changed only via the put
callbacks.  OTOH, when a slave element is volatile and its values may
be changed by other reason (e.g. hardware status change), the values
will get inconsistent.

The new function allows the slave elements with volatile changes.
When the slave is tied with this call, the native get callback is
issued at each time so that the values are always updated.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-03-09 14:56:19 +01:00
Takashi Iwai
d3bd67cdbb ALSA: make snd_ctl_elem_read() and snd_ctl_elem_write() static
snd_ctl_elem_read() and snd_ctl_elem_write() are no longer used by
any other drivers.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-06-13 16:48:49 +02:00
Takashi Iwai
e922b0028f [ALSA] Move vmaster code to sound core
Move the codes for virtual master controls to sound core part so that
not only hda-intel drivers can use it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-04-24 12:00:12 +02:00
Jaroslav Kysela
c1017a4cdb [ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.cz
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2007-10-16 16:51:18 +02:00
Takashi Iwai
b9ed4f2b68 [ALSA] Add helper functions for frequently used callbacks
Added helper functions for frequenty used callbacks:
  snd_ctl_boolean_mono_info() and snd_ctl_boolean_stereo_info()

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16 15:57:44 +02:00
Takashi Iwai
0cb29ea0d4 [ALSA] Add even more 'const' to everything related to TLV
Mark TLV data as 'const'
Signed-of-by: Philipp Matthias Hahn <pmhahn@pmhahn.de>

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09 09:03:19 +01:00
Adrian Bunk
0b51ba07e2 [ALSA] make sound/core/control.c:snd_ctl_new() static
Now that everyone uses snd_ctl_new1() and noone is using snd_ctl_new()
anymore, we can make it static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09 09:01:40 +01:00
Takashi Iwai
6a65d793b0 [ALSA] Remove unused tlv_rw field from struct snd_kcontrol
Remove unused tlv_rw field from struct snd_kcontrol.  The callback is
set in tlv.c field, instead.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-09-23 10:37:49 +02:00
Jaroslav Kysela
8aa9b586e4 [ALSA] Control API - more robust TLV implementation
- added callback option
- added READ/WRITE/COMMAND flags to access member
- added WRITE/COMMAND ioctls
- added SNDRV_CTL_EVENT_MASK_TLV for TLV change notifications
- added TLV support to ELEM_ADD ioctl

Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-09-23 10:37:26 +02:00
Jaroslav Kysela
42750b04c5 [ALSA] Control API - TLV implementation for additional information like dB scale
This patch implements a TLV mechanism to transfer an additional information
like dB scale to the user space. The types might be extended in future.
Acked-by: Takashi Iwai <tiwai@suse.de>

Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-09-23 10:36:42 +02:00
Takashi Iwai
82e9bae6fd [ALSA] Remove xxx_t typedefs: Controls
Modules: Control Midlevel

Remove xxx_t typedefs from the core controls.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:17:32 +01:00
Takashi Iwai
b636a71d9b [ALSA] Add const prefix
Control Midlevel
Add const prefix to snd_kcontrol_new_t pointer for better protection.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-06-22 12:28:54 +02:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00