Commit Graph

36 Commits

Author SHA1 Message Date
Takashi Iwai
23aebca486 ALSA: dummy - Fix descriptions of pcm_substreams parameter
Now up to 128 substreams are supported.

Reported-by: Adrian Bridgett <adrian@smop.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-02 14:11:55 +01:00
Julia Lawall
4b3be6afa4 ALSA: sound: Move dereference after NULL test and drop unnecessary NULL tests
In pcm.c, if the NULL test on pcm is needed, then the dereference should be
after the NULL test.

In dummy.c and ali5451.c, the context of the calls to
snd_card_dummy_new_mixer and snd_ali_free_voice show that dummy and pvoice,
respectively cannot be NULL.

A simplified version of the semantic match that detects this problem is as
follows (http://coccinelle.lip6.fr/):

// <smpl>
@match exists@
expression x, E;
identifier fld;
@@

* x->fld
  ... when != \(x = E\|&x\)
* x == NULL
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-10-30 12:01:27 +01:00
Takashi Iwai
b888d1ce82 ALSA: dummy - Increase MAX_PCM_SUBSTREAMS to 128
Increase the limit of PCM substreams to 128.  The default value is
unchanged; only the max accept value is increased.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-09-08 18:15:17 +02:00
Takashi Iwai
9b151fec13 ALSA: dummy - Add debug proc file
Added the debug proc file to see or change the snd_pcm_hardware fields
to emulate.  The parameters can be changed by writing to a proc file like:

    # echo periods_min 4 > /proc/asound/card1/dummy_pcm

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-09-08 14:46:49 +02:00
Takashi Iwai
a68c4d1133 ALSA: dummy - Fake buffer allocations
Instead of allocating the real buffers, use a fake buffer and ignore
read/write in the dummy driver so that we can save the resources.
For mmap, a single page (unique to the direction, though) is reused
to all buffers.

When the app requires to read/write the real buffers, pass fake_buffer=0
module option at loading time.  This will get back to the old behavior.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-09-07 09:01:10 +02:00
Takashi Iwai
b5d1078173 ALSA: dummy - Fix the timer calculation in systimer mode
Fix the expire-time calculation in the systimer mode when the buffer
size isn't aligned to the period size.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-09-04 08:45:11 +02:00
Takashi Iwai
b142037b4c ALSA: dummy - Better jiffies handling
In the system-timer mode, snd-dummy driver issues each tick to update
the position.  This is highly inefficient and even inaccurate if the
timer can't be triggered at each tick.

Now rewritten to wake up only at the period boundary.  The position
is calculated from the current jiffies.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-09-03 16:01:06 +02:00
Takashi Iwai
c631d03c68 ALSA: dummy - Support high-res timer mode
Allow snd-dummy driver to use high-res timer as its timing source
instead of the system timer.  The new module option "hrtimer" is added
to turn on/off the high-res timer support.  It can be switched even
dynamically via sysfs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-09-03 15:59:26 +02:00
Takashi Iwai
bd7dd77c2a ALSA: Convert to snd_card_create() in other sound/*
Convert from snd_card_new() to the new snd_card_create() function
in other sound subdirectories.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-12 15:21:19 +01:00
Mariusz Kozlowski
e78521f321 ALSA: misc typo fixes
Fixed typos in disabled codes via #if 0.

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-10-19 10:36:08 +02:00
Jaroslav Kysela
1a11cb6427 ALSA: dummy driver - do not use assignment in if condition
checkpatch.pl does not like assignment in if condition

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-08-15 12:59:02 +02:00
Daniel THOMPSON
54e8e21ed2 sound: Fix esoteric double free in the dummy sound driver.
The dummy driver uses runtime->private_free but still frees
its pcm structures on error paths.

This is esoteric because the error paths in question are
unreachable. Thus the bug is only a problem when someone
copies this code into other drivers.

Signed-off-by: Daniel R Thompson <daniel.thompson@st.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-08-15 12:38:14 +02:00
Takashi Iwai
5e246b850d ALSA: Kill snd_assert() in other places
Kill snd_assert() in other places, either removed or replaced with
if () with snd_BUG_ON().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-08-13 11:46:40 +02:00
Roel Kluin
369b240d63 [ALSA] sound/drivers/dummy.c: fix negative snd_pcm_format_width() check
bps is unsigned, a negative snd_pcm_format_width() return value is not noticed

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-04-24 12:00:38 +02:00
Ahmet İnan
470f23b873 [ALSA] snd-dummy - better realtime app support
when the time interval for a period is smaller than kernel HZ, then
snd-aloop and snd-dummy cannot call snd_pcm_period_elapsed as fast enough
annymore. this happens for example with games. but the app still needs to
see, that the buffer actually did go further, which is provided by these
patches.

Signed-off-by: Ahmet İnan <ainan <at> mathematik.uni-freiburg.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-04-24 12:00:17 +02:00
Ahmet İnan
53463a8302 [ALSA] snd-dummy - improved timing, silence on prepare
Signed-off-by: Ahmet İnan <ainan <at> mathematik.uni-freiburg.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-04-24 12:00:14 +02:00
Takashi Iwai
9004acc70e [ALSA] Remove sound/driver.h
This header file exists only for some hacks to adapt alsa-driver
tree.  It's useless for building in the kernel.  Let's move a few
lines in it to sound/core.h and remove it.
With this patch, sound/driver.h isn't removed but has just a single
compile warning to include it.  This should be really killed in
future.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:48 +01:00
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
a5ce88909d [ALSA] Clean up with common snd_ctl_boolean_*_info callbacks
Clean up codes using the new common snd_ctl_boolean_*_info() callbacks.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16 15:57:45 +02:00
Randy Dunlap
c12aad6efb [ALSA] more section mismatches
Something about __init_or_module isn't working as expected (?).
CONFIG_HOTPLUG=y
CONFIG_MODULES=n
Fix shared init/exit code helper:
WARNING: sound/built-in.o(.exit.text+0x243): Section mismatch: reference to .init.text: (between 'alsa_card_mpu401_exit' and 'ac97_bus_exit')
WARNING: sound/built-in.o(.exit.text+0x21b): Section mismatch: reference to .init.text: (between 'alsa_card_dummy_exit' and 'alsa_card_serial_exit')

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-07-20 11:11:34 +02:00
Prarit Bhargava
788c604333 [ALSA] Fix __devinit and __devexit issues with sound drivers
Fix __devinit and __devexit issues with sound drivers.
Resolves MODPOST warnings similar to:
WARNING: sound/drivers/snd-dummy.o - Section mismatch: reference to .init.text:snd_dummy_probe from .data.rel.local between 'snd_dummy_driver' (at offset 0x0) and 'snd_dummy_controls'
WARNING: sound/drivers/snd-mtpav.o - Section mismatch: reference to .init.text:snd_mtpav_probe from .data.rel.local between 'snd_mtpav_driver' (at offset 0x0) and 'snd_mtpav_input'
WARNING: sound/drivers/snd-virmidi.o - Section mismatch: reference to .init.text:snd_virmidi_probe from .data.rel.local after 'snd_virmidi_driver' (at offset 0x0)

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-14 08:38:28 +01:00
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
Takashi Iwai
fb567a8e4f [ALSA] Add dB scale information to dummy driver
Added the dB scale information to dummy driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-09-23 10:43:19 +02:00
Takashi Iwai
e05d696424 [ALSA] Fix some typos in snd-dummy driver
Fixed some typos in snd-dummy driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-09-23 10:41:33 +02:00
Rene Herman
7152447df9 [ALSA] unregister platform device again if probe was unsuccessful
This second one unregisters the platform device again when the probe is
unsuccesful for sound/drivers, sound/arm/sa11xx-uda1341.c and
sound/ppc/powermac.c. This gets them all.

Signed-off-by: Rene Herman <rene.herman@keyaccess.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-06-22 21:32:42 +02:00
Rene Herman
a182ee9876 [ALSA] continue on IS_ERR from platform device registration
I previously only concerned myself with sound/isa. When I now checked
for more platform_device_register_simple() usages in ALSA I found a
couple more drivers that needed the same patches as already submitted
for all the ISA drivers.
This first one is the continue-on-iserr patch for sound/drivers. This
gets them all.

Signed-off-by: Rene Herman <rene.herman@keyaccess.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-04-27 21:10:08 +02:00
Takashi Iwai
8278ca8feb [ALSA] Fix check of enable module option
Fix the check of enable module option in probe of platform_device drivers.
It shouldn't break the loop but just ignore if enable[i] is false.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-03-22 10:30:43 +01:00
Jaroslav Kysela
2ad5dd8dc3 [ALSA] dummy driver - added CA0106 emulation defines
Modules: Generic drivers

Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-01-04 10:13:46 +01:00
Clemens Ladisch
f7a9275d94 [ALSA] unregister platform devices
Call platform_device_unregister() for all platform devices that we've
registered.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
2006-01-03 12:30:39 +01:00
Takashi Iwai
b32425ac93 [ALSA] Fix possible races in timer callbacks
Fix possible races in timer callbacks.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:29:08 +01:00
Takashi Iwai
6e65c1cc44 [ALSA] dummy - Use platform_device
Modules: Generic drivers

Rewrite the probe/remove code using platform_device.
Added the suspend/resume support, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:20:29 +01:00
Takashi Iwai
4a4d2cfd8c [ALSA] Remove xxx_t typedefs: Generic drivers
Modules: Generic drivers

Remove xxx_t typedefs from the generic drivers
(dummy, mtpav, serial-u16550 and virmidi).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:18:15 +01:00
Takashi Iwai
c8eb6ba16a [ALSA] snd-dummy - Code clean-up
Modules: Generic drivers

Clean up snd-dummy driver code.
- Make common PCM callbacks
- Simplify open callback
- Remove unnecessary irqsave in control callbacks

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:16:34 +01:00
Takashi Iwai
561b220a4d [ALSA] Replace with kzalloc() - others
Documentation,SA11xx UDA1341 driver,Generic drivers,MPU401 UART,OPL3
OPL4,Digigram VX core,I2C cs8427,I2C lib core,I2C tea6330t,L3 drivers
AK4114 receiver,AK4117 receiver,PDAudioCF driver,PPC PMAC driver
SPARC AMD7930 driver,SPARC cs4231 driver,Synth,Common EMU synth
USB generic driver,USB USX2Y
Replace kcalloc(1,..) with kzalloc().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-09-12 10:48:22 +02:00
Takashi Iwai
16dab54b8c [ALSA] Add snd_card_set_generic_dev() call
ARM,SA11xx UDA1341 driver,Generic drivers,MPU401 UART,MIPS
MIPS AU1x00 driver,PPC,PPC PowerMac driver,SPARC,SPARC AMD7930 driver
SPARC cs4231 driver,SPARC DBRI driver
- Added snd_card_set_generic_dev() call.
- Added SND_GENERIC_DRIVER to Kconfig.
- Clean up the error path in probe if necessary.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-09-12 10:41:56 +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