aboutsummaryrefslogtreecommitdiffstats
path: root/sound/core/pcm.c
Commit message (Collapse)AuthorAgeFilesLines
* [ALSA] PCM interface - rename SNDRV_PCM_TSTAMP_MMAP to SNDRV_PCM_TSTAMP_ENABLEJaroslav Kysela2008-01-311-1/+1
| | | | | | | | | | | Change semantics for SNDRV_PCM_TSTAMP_MMAP. Doing timestamping only in the interrupt handler might cause that hw_ptr is not related to actual timestamp. With this change, grab timestamp at every hw_ptr update to have always valid timestamp + ring buffer position pair. With this change, SNDRV_PCM_TSTAMP_MMAP was renamed to SNDRV_PCM_TSTAMP_ENABLE. It's no regression (I think). Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [ALSA] Remove sound/driver.hTakashi Iwai2008-01-311-1/+0
| | | | | | | | | | | | 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>
* [ALSA] Remove PCM sleep_min and tickTakashi Iwai2008-01-311-11/+0
| | | | | | | | | | | | | The 'tick' in PCM is set (again) via sw_params. And, nobody uses this feature at all except for a command line option of aplay. (This is literally 'nobody', as I checked alsa-lib API calls in all programs in major distros.) Above all, if we need finer wake-ups for the position update, it's basically an issue that the driver should solve, not tuned by each application. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [ALSA] Remove PCM xfer_align sw paramsTakashi Iwai2008-01-311-1/+0
| | | | | | | | | | | | | The xfer_align sw_params parameter has never been used in a sane manner, and no one understands what this does exactly. The current implementation looks also buggy because it allows write of shorter size than xfer_align. So, if you do partial writes, the write isn't actually aligned at all. Removing this parameter will make some pcm_lib_* code more readable (and less buggy). Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.czJaroslav Kysela2007-10-161-2/+2
| | | | Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [PATCH] Fix breakage with CONFIG_SYSFS_DEPRECATEDTakashi Iwai2007-02-091-1/+1
| | | | | | | | | The fix for sysfs breakage with CONFIG_SYSFS_DEPRECATED was flown away by the conflicted merge of the ALSA git tree. The patch below fixes it again. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] alsa core: convert to list_for_each_entry*Johannes Berg2007-02-091-20/+12
| | | | | | | | | | | This patch converts most uses of list_for_each to list_for_each_entry all across alsa. In some place apparently an item can be on a list with different pointers so of course that isn't compatible with list_for_each, I therefore didn't touch those places. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] alsa core: add struct device pointer to struct snd_pcmJohannes Berg2007-02-091-5/+13
| | | | | | | | | | | This patch adds a struct device pointer to struct snd_pcm in order to be able to give it a different device than the card. It defaults to the card's device, however, so it should behave identically for drivers not touching the field. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sound: fix PCM substream listAkinobu Mita2006-12-201-0/+4
| | | | | | | | | | | | If snd_pcm_new_stream() fails to initalize a substream (if snd_pcm_substream_proc_init() returns error), snd_pcm_new_stream() immediately return without unlinking that kfree()d substram. It causes oops when snd_pcm_free() iterates the list of substream to free them by invalid reference. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* Driver core: convert sound core to use struct deviceGreg Kroah-Hartman2006-12-011-3/+4
| | | | | | | | | | | | | | | | | | | | Converts from using struct "class_device" to "struct device" making everything show up properly in /sys/devices/ with symlinks from the /sys/class directory. It also makes the struct sound_card to show up as a "real" device where all the different sound class devices are placed as childs and different card attribute files can hang off of. /sys/class/sound is still a flat directory, but the symlink targets of all devices belonging to the same card, point the the /sys/devices tree below the new card device object. Thanks to Kay for the updates to this patch. Signed-off-by: Kay Sievers <kay.sievers@novell.com> Acked-by: Jaroslav Kysela <perex@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] maximum latency tracking: ALSA supportTakashi Iwai2006-10-011-0/+3
| | | | | | | | | | | | | | | | | | | | | | Add maximum latency tracking to the ALSA subsystem for PCM playback. In ALSA, the playback application controls the buffer size and thus indirectly the period of latency that it can deal with. This patch uses 75% of the total available latency as threshold to announce to the latency subsystem; While 75% is a crude heuristic it's a quite reasonable one; the remaining 25% can be used for all driver processing for the next samples which is also proportional to the size of the buffer. With ogg123 a latency setting of about 4msec was seen (at 44Khz), while with the "play" command a much longer maximum tolerable latency was seen. Other, more multimedia oriented players as well as games, will have a lot smaller buffers to allow better synchronization and those will actually get into the latency domains where there is impact on the power management rules. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [ALSA] Add pcm_class attribute to PCM sysfs entryTakashi Iwai2006-09-231-0/+24
| | | | | | | | | This patch adds a new attribute, pcm_class, to each PCM sysfs entry. It's useful to detect what kind of PCM stream is, for example, HAL can check whether it's a modem or not. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] Fix substream selection in PCM and rawmidiTakashi Iwai2006-09-231-1/+2
| | | | | | | | | | | | The PCM and rawmidi substreams can be selected explicitly by opening control handle and set via *_PREFER_SUBDEVICE ioctl. But, when multiple controls are opened, the driver gets confused. The patch fixes the initialization of prefer_*_subdevice and the check of multiple controls. The first set subdevice is picked up as the valid one. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] Unregister device files at disconnectionTakashi Iwai2006-09-231-30/+18
| | | | | | | | | | | | Orignally proposed by Sam Revitch <sam.revitch@gmail.com>. Unregister device files at disconnection to avoid the futher accesses. Also, the dev_unregister callback is removed and replaced with the combination of disconnect + free. A new function snd_card_free_when_closed() is introduced, which is used in USB disconnect callback. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] Fix disconnection of proc interfaceTakashi Iwai2006-09-231-35/+18
| | | | | | | | | | - Add the linked list to each proc entry to enable a single-shot disconnection (unregister) - Deprecate snd_info_unregister(), use snd_info_free_entry() - Removed NULL checks of snd_info_free_entry() Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] Remove zero-initialization of static variablesTakashi Iwai2006-06-221-1/+1
| | | | | | | Removed zero-initializations of static variables. A tiny optimization. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Fix mmap_count with O_APPEND opened streamsTakashi Iwai2006-06-221-1/+1
| | | | | | | | Move mmap_count to snd_pcm_substream instead of runtime struct so that multiplly opened substreams via O_APPEND can be handled correctly. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Add O_APPEND flag support to PCMTakashi Iwai2006-06-221-2/+23
| | | | | | | | Added O_APPEND flag support to PCM to enable shared substreams among multiple processes. This mechanism is used by dmix and dsnoop plugins. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Remove spinlocks around proc printsTakashi Iwai2006-06-221-6/+0
| | | | | | Don't lock during showing proc read. snd_iprintf() might sleep. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Remove unneeded read/write_size fields in proc text opsTakashi Iwai2006-06-221-9/+10
| | | | | | | Remove unneeded read/write_size fields in proc text ops. snd_info_set_text_ops() is fixed, too. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Move OSS-specific hw_params helper to snd-pcm-oss moduleTakashi Iwai2006-06-221-30/+6
| | | | | | | Move EXPORT_SYMBOL()s to places adjacent to functions/variables. Also move OSS-specific hw_params helper functions to pcm_oss.c. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Fix Oops at rmmod with CONFIG_SND_VERBOSE_PROCFS=nTakashi Iwai2006-04-271-3/+3
| | | | | | | | Fixed Oops at rmmod with CONFIG_SND_VERBOSE_PROCFS=n. Add ifdef to struct fields for optimization and better compile checks. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] PCM core - introduce CONFIG_SND_PCM_XRUN_DEBUGJaroslav Kysela2006-04-271-3/+3
| | | | | | This patch makes the XRUN (overrun/underrun) notification code optional. Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sound/core/pcm.c: make snd_pcm_format_name() staticAdrian Bunk2006-04-121-1/+1
| | | | | | | | | Modules: PCM Midlevel This patch makes the needlessly global snd_pcm_format_name() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Clean up PCM codes (take 2)Takashi Iwai2006-03-311-6/+6
| | | | | | | | | - Clean up initialization and destruction of substream instance Now snd_pcm_open_substream() alone does most initialization jobs. Add pcm_release callback for cleaning up at snd_pcm_release_substream() - Tidy up PCM oss code Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Tiny clean up of PCM codesTakashi Iwai2006-03-311-2/+0
| | | | | | | - Make snd_pcm_prepare() static - Clean up snd_pcm_kernel_*_ioctl() functions, reduce exports Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] snd_pcm_format_name() is no longer exportedJaroslav Kysela2006-03-221-1/+0
| | | | | | | | | | Modules: PCM Midlevel,USB generic driver Because snd_pcm_format_name() function is used only for informational purposes, it is no longer exported from the PCM midlevel to reduce space and dependency. usbaudio module shows only numeric value for format. Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] semaphore -> mutex (core part)Ingo Molnar2006-03-221-19/+21
| | | | | | | | | | | Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] PCM midlevel & PCM OSS - make procfs & OSS plugin code optionalJaroslav Kysela2006-03-221-1/+3
| | | | | | | | | | | | Modules: ALSA Core,PCM Midlevel,ALSA<-OSS emulation,USB generic driver 1) The verbose procfs code for the PCM midlevel and usb audio can be removed now (more patches will follow). CONFIG_SND_VERBOSE_PROCFS 2) The PCM OSS plugin system can be also compiled optionaly. CONFIG_SND_PCM_OSS_PLUGINS Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] Optimize for config without PROC_FSTakashi Iwai2006-01-031-42/+62
| | | | | | | | Modules: HWDEP Midlevel,ALSA Core,PCM Midlevel,Timer Midlevel Optimize the code when compiled without CONFIG_PROC_FS. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] dynamic minors (3/6): store device-specific object pointers dynamicallyClemens Ladisch2006-01-031-53/+65
| | | | | | | | | | Instead of storing the pointers to the device-specific structures in an array, put them into the struct snd_minor, and look them up dynamically. This makes the device type modules independent of the minor number encoding. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
* [ALSA] dynamic minors (1/6): store device type in struct snd_minorClemens Ladisch2006-01-031-2/+4
| | | | | | | | | | Instead of a comment string, store the device type in the snd_minor structure. This makes snd_minor more flexible, and has the nice side effect that we don't need anymore to create a separate snd_minor template for registering a device but can pass the file_operations directly to snd_register_device(). Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
* [ALSA] Add error messagesTakashi Iwai2006-01-031-5/+11
| | | | | | Add error messages in the critial error path to be more verbose. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Remove xxx_t typedefs: PCMTakashi Iwai2006-01-031-100/+114
| | | | | | | | Modules: PCM Midlevel Remove xxx_t typedefs from the core PCM codes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Remove snd_runtime_check() macroTakashi Iwai2005-11-041-1/+2
| | | | | | | | | | | Remove snd_runtime_check() macro. This macro worsens the readability of codes. They should be either normal if() or removable asserts. Also, the assert displays stack-dump, instead of only the last caller pointer. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Replace with kzalloc() - core stuffTakashi Iwai2005-09-121-3/+3
| | | | | | | | Control Midlevel,ALSA Core,HWDEP Midlevel,PCM Midlevel,RawMidi Midlevel Timer Midlevel,ALSA<-OSS emulation Replace kcalloc(1,..) with kzalloc(). Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] sound/core/: possible cleanupsAdrian Bunk2005-05-291-1/+0
| | | | | | | | | | | PCM Midlevel,ALSA Core,Timer Midlevel,ALSA sequencer,Virtual Midi This patch contains the following possible cleanups: - make needlessly global code static - #if 0 the following unused global functions - remove the following unneeded EXPORT_SYMBOL's Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Export missing snd_pcm_format_*()Takashi Iwai2005-05-291-0/+1
| | | | | | | | | | PCM Midlevel Export snd_pcm_format_size(). This function is used by some out-of-kernel drivers. Make snd_pcm_format_cpu_endian() macro for optimization. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Fix permissions in some /proc filesTakashi Iwai2005-05-291-0/+1
| | | | | | | | | | | | | PCM Midlevel,CA0106 driver,EMU10K1/EMU10K2 driver Fix by Guillaume Chazarain <guichaz@yahoo.fr>: Some tunables in /proc have a write() function, but as their permission does not reflect it, it can be confusing to the user. So here is a patch that corrects the mode of those files. Note that I have only tested the 'xrun_debug' entry. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+1074
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!
generated by cgit v1.1 at 2024-12-27 12:51:53 +0000