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4b671f5774
linux/include/sound
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Takashi Iwai 4b671f5774 ALSA: pcm: Add an ioctl to specify the supported protocol version 
We have an ioctl to inform the PCM protocol version the running kernel
supports, but there is no way to know which protocol version the
user-space can understand.  This lack of information caused headaches
in the past when we tried to extend the ABI.  For example, because we
couldn't guarantee the validity of the reserved bytes, we had to
introduce a new ioctl SNDRV_PCM_IOCTL_STATUS_EXT for assigning a few
new fields in the formerly reserved bits.  If we could know that it's
a new alsa-lib, we could assume the availability of the new fields,
thus we could have reused the existing SNDRV_PCM_IOCTL_STATUS.

In order to improve the ABI extensibility, this patch adds a new ioctl
for user-space to inform its supporting protocol version to the
kernel.  By reporting the supported protocol from user-space, the
kernel can judge which feature should be provided and which not.

With the addition of the new ioctl, the PCM protocol version is bumped
to 2.0.14, too.  User-space checks the kernel protocol version via
SNDRV_PCM_INFO_PVERSION, then it sets the supported version back via
SNDRV_PCM_INFO_USER_PVERSION.

Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-06-27 13:55:46 +02:00
..
ac97_codec.h ASoC: ac97: add gpio chip 2015-11-18 18:08:54 +00:00
aci.h
ad1816a.h
ad1843.h
adau1373.h
aess.h
ak4xxx-adda.h
ak4113.h ALSA: ak411x: Use array instead of offsetof() 2017-05-17 07:13:03 +02:00
ak4114.h ALSA: ak411x: Use array instead of offsetof() 2017-05-17 07:13:03 +02:00
ak4117.h ALSA: ak411x: Use array instead of offsetof() 2017-05-17 07:13:03 +02:00
ak4531_codec.h
ak4641.h
alc5623.h
asequencer.h
asound.h
asoundef.h
atmel-abdac.h
atmel-ac97c.h
compress_driver.h ALSA: compress: Fix kernel-doc warnings 2016-11-15 07:28:15 +01:00
control.h sched/headers: Prepare to remove spurious <linux/sched.h> inclusion dependencies 2017-03-02 08:42:41 +01:00
core.h ALSA: Use IS_ENABLED() in common headers 2017-05-17 07:13:04 +02:00
cs35l33.h ASoC: cs35l33: Initial commit of the cs35l33 CODEC driver. 2016-06-27 17:39:06 +01:00
cs35l34.h ASoC: cs35l34: Initial commit of the cs35l34 CODEC driver. 2016-10-21 12:02:44 +01:00
cs35l35.h ASoC: cs35l35: Allow user to configure IMON SCALE 2017-04-21 18:01:38 +01:00
cs42l52.h
cs42l56.h
cs42l73.h
cs4231-regs.h
cs4271.h
cs8403.h
cs8427.h
da7213.h ASoC: da7213: Add support to handle mclk data provided to driver 2015-10-07 15:11:34 +01:00
da7218.h ASoC: da7218: Add da7218 codec driver 2015-11-30 12:24:12 +00:00
da7219-aad.h ASoC: codecs: Add da7219 codec driver 2015-10-02 18:11:27 +01:00
da7219.h ASoC: da7219: Disable AAD if codec is not a wake-up source 2016-09-26 09:39:50 -07:00
da9055.h
designware_i2s.h ASoC: dwc: add quirk to override COMP_PARAM_1 register 2016-01-10 12:11:50 +00:00
dmaengine_pcm.h ASoC: Revert "Drop SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag" 2017-01-23 18:16:33 +00:00
emu10k1_synth.h
emu10k1.h ALSA: emu10k1: Use workqueue instead of kthread for emu1010 fw polling 2016-11-15 08:21:19 +01:00
emu8000_reg.h
emu8000.h
emux_legacy.h
emux_synth.h ALSA: seq: Allow the tristate build of OSS emulation 2017-06-09 22:09:45 +02:00
es1688.h
gus.h
hda_chmap.h ALSA: hda - Update chmap tlv to report sink's capability 2016-04-04 16:04:24 +02:00
hda_hwdep.h
hda_i915.h drm/i915/dp: DP audio API changes for MST 2016-09-22 09:01:55 -07:00
hda_register.h ALSA: hda - add more ML register definitions 2017-04-07 10:39:18 +02:00
hda_regmap.h ALSA: hda - Fix possible race on regmap bypass flip 2016-04-21 17:59:17 +02:00
hda_verbs.h
hdaudio_ext.h ALSA - Ext hda: remove bus_parse_capabilities 2016-08-09 08:53:56 +02:00
hdaudio.h ALSA: hda - Avoid tricky macros 2017-04-03 08:42:43 +02:00
hdmi-codec.h ASoC: hdmi-codec: use unsigned type to structure members with bit-field 2016-12-16 12:27:35 +00:00
hwdep.h
i2c.h ALSA: i2c: constify snd_i2c_ops structures 2015-11-30 11:40:08 +01:00
info.h ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS 2015-05-27 21:25:19 +02:00
initval.h
jack.h ALSA: jack: Allow building the jack layer without input device 2016-02-23 09:03:07 +01:00
l3.h ASoC: L3 bus: Add default gpio ops 2016-08-08 11:55:20 +01:00
max9768.h
max98088.h
max98090.h
max98095.h ASoC: max98095: Single bit bitfields should be unsigned 2012-05-13 23:33:53 +01:00
memalloc.h
minors.h
mixer_oss.h ALSA: Use IS_ENABLED() in common headers 2017-05-17 07:13:04 +02:00
mpu401.h
omap-hdmi-audio.h omapdss: hdmi audio: Make header file independent of video/omapdss.h 2016-06-03 16:06:36 +03:00
omap-pcm.h
opl3.h ALSA: seq: Allow the tristate build of OSS emulation 2017-06-09 22:09:45 +02:00
opl4.h
pcm_drm_eld.h ALSA: pcm: add DRM ELD helper 2015-05-22 16:01:44 +02:00
pcm_iec958.h ALSA: pcm: add IEC958 channel status helper for hw_params 2016-04-06 11:47:48 -07:00
pcm_oss.h
pcm_params.h ALSA: Add params_set_format helper 2015-02-24 00:43:18 +09:00
pcm-indirect.h ALSA: pcm: Fix negative appl_ptr handling in pcm-indirect helpers 2017-05-25 23:34:45 +02:00
pcm.h ALSA: pcm: Add an ioctl to specify the supported protocol version 2017-06-27 13:55:46 +02:00
pt2258.h
pxa2xx-lib.h ASoC: pxa: pxa-pcm-lib: switch over to snd-soc-dmaengine-pcm 2015-09-30 23:21:16 +01:00
rawmidi.h ALSA: Use IS_ENABLED() in common headers 2017-05-17 07:13:04 +02:00
rt286.h
rt298.h ASoC: add rt298 codec driver 2015-07-09 12:00:11 +01:00
rt5514.h ASoC: rt5514: Add the DMIC initial delay to wait it ready. 2016-10-25 14:25:36 +01:00
rt5640.h ASoC: rt5640: Fill up the IN3's support 2015-10-22 13:33:00 +01:00
rt5645.h ASoC: rt5645: Add jd_invert for Broadwell 2015-09-22 09:46:33 -07:00
rt5651.h
rt5659.h ASoC: rt5659: add rt5659 codec driver 2015-11-18 12:55:25 +00:00
rt5660.h ASoC: rt5660: add rt5660 codec driver 2016-09-24 19:51:57 +01:00
rt5665.h treewide: Remove remaining executable attributes from source files 2017-02-25 12:12:50 -08:00
rt5670.h ASoC: rt5670: Add IRQ function 2015-03-11 12:08:20 +00:00
rt5677.h
s3c24xx_uda134x.h ASoC: s3c24xx_uda134x: Remove unused power() callback 2016-08-08 11:55:20 +01:00
sb16_csp.h
sb.h
seq_device.h ALSA: seq: Define driver object in each driver 2015-02-12 14:15:54 +01:00
seq_kernel.h ALSA: seq: Drop snd_seq_autoload_lock() and _unlock() 2015-02-12 14:42:31 +01:00
seq_midi_emul.h
seq_midi_event.h
seq_oss_legacy.h
seq_oss.h
seq_virmidi.h
sh_dac_audio.h
sh_fsi.h
simple_card_utils.h ASoC: simple-card: use devm_get_clk_from_child() 2017-01-23 17:46:33 +00:00
simple_card.h ASoC: simple-card: use asoc_simple_card_parse_daifmt() 2016-07-01 17:34:02 +02:00
snd_wavefront.h ALSA: isa: Constify snd_rawmidi_ops 2017-01-12 12:50:16 +01:00
soc-dai.h ASoC: core: add optional pcm_new callback for DAI driver 2017-01-20 15:16:23 +00:00
soc-dapm.h ASoC: dapm: Introduce DAPM_DOUBLE_R dual channel dual register control type 2016-11-02 09:55:30 -06:00
soc-dpcm.h ASoC: Make soc_dpcm_debugfs_add() non-fatal 2015-04-09 11:32:29 +01:00
soc-topology.h ASoC: topology: Only free TLV for volume mixers of a widget 2016-12-05 13:39:39 +00:00
soc.h Merge remote-tracking branch 'asoc/topic/rt5665' into asoc-next 2017-04-30 22:15:43 +09:00
soundfont.h
spear_dma.h ASoC: Update email-id of Rajeev Kumar 2015-04-28 16:31:01 +01:00
spear_spdif.h
sta32x.h
sta350.h
tas2552-plat.h
tas5086.h
tea6330t.h
timer.h ALSA: timer: Introduce disconnect op to snd_timer_instance 2016-01-21 17:51:42 +01:00
tlv320aic3x.h
tlv320aic32x4.h
tlv320dac33-plat.h
tlv.h ALSA: control: cage TLV_DB_RANGE_HEAD in kernel land because it was obsoleted 2016-09-25 22:16:49 +02:00
tpa6130a2-plat.h
uda134x.h
uda1380.h
util_mem.h
vx_core.h
wavefront.h
wm0010.h
wm1250-ev1.h
wm2000.h
wm2200.h
wm5100.h
wm8903.h
wm8904.h ASoC: wm8904: Correct number of EQ registers 2015-10-20 15:46:09 +01:00
wm8955.h
wm8960.h
wm8962.h
wm8993.h
wm8996.h
wm9081.h
wm9090.h
wss.h