linux_dsm_epyc7002/include/sound
Lars-Peter Clausen 6dd98b0a3e ASoC: dapm: Introduce toplevel widget categories
DAPM widgets can be classified into four categories:
	* supply: Supply widgets do not affect the power state of their
		non-supply widget neighbors and unlike other widgets a
		supply widget is not powered up when it is on an active
		path, but when at least on of its neighbors is powered up.
	* source: A source is a widget that receives data from outside the
		DAPM graph or generates data. This can for example be a
		microphone, the playback DMA or a signal generator. A source
		widget will be considered powered up if there is an active
		path to a sink widget.
	* sink: A sink is a widget that transmits data to somewhere outside
		of the DAPM graph. This can e.g. be a speaker or the capture
		DMA. A sink widget will be considered powered up if there is
		an active path from a source widget.
	* normal: Normal widgets are widgets not covered by the categories
		above. A normal widget will be considered powered up if it
		is on an active path between a source widget and a sink
		widget.

The way the number of input and output paths for a widget is calculated
depends on its category. There are a bunch of factors which decide which
category a widget is. Currently there is no formal classification of these
categories and we calculate the category of the widget based on these
factors whenever we want to know it. This is at least once for every widget
during each power update sequence. The factors which determine the category
of the widgets are mostly static though and if at all change rather seldom.
This patch introduces three new per widget flags, one for each of non-normal
widgets categories. Instead of re-computing the category each time we want
to know them the flags will be checked. For the majority of widgets the
category is solely determined by the widget id, which means it never changes
and only has to be set once when the widget is created. The only widgets
with dynamic categories are:

	snd_soc_dapm_dai_out: Is considered a sink iff the capture stream is
		active, otherwise normal.
	snd_soc_dapm_dai_in: Is considered a source iff the playback stream
		is active, otherwise normal.
	snd_soc_dapm_input: Is considered a sink iff it has no outgoing
		paths, otherwise normal.
	snd_soc_dapm_output: Is considered a source iff it has no incoming
		paths, otherwise normal.
	snd_soc_dapm_line: Is considered a sink iff it has no outgoing paths
		and is considered a source iff it has no incoming paths,
		otherwise normal.

For snd_soc_dapm_dai_out/snd_soc_dapm_dai_in widgets the category will be
updated when a stream is started or stopped. For the other dynamic widgets
the category will be updated when a path connecting to it is added or
removed.

Introducing those new widget categories allows to make
is_connected_{output,input}_ep, which are among the hottest paths of the
DAPM algorithm, more generic and significantly shorter.

The before and after sizes for is_connected_{output,input}_ep are:

On ARM (defconfig + CONFIG_SND_SOC):
	function                                     old     new   delta
	is_connected_output_ep                       480     340    -140
	is_connected_input_ep                        456     352    -104

On amd64 (defconfig + CONFIG_SND_SOC):
	function                                     old     new   delta
	is_connected_output_ep                       579     427    -152
	is_connected_input_ep                        563     427    -136

Which is about a 25%-30% decrease, other architectures are expected to have
similar numbers. At the same time the size of the snd_soc_dapm_widget struct
does not change since the new flags are stored in the same word as the
existing flags.

Note: that since the per widget 'ext' flag was only used to decide whether a
snd_soc_dapm_input or snd_soc_dapm_output widget was a source or a sink it
is now unused and can be removed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-28 00:19:59 +00:00
..
ac97_codec.h Sound updates for 3.7-rc1 2012-10-09 07:07:14 +09:00
aci.h
ad1816a.h Sound updates for 3.7-rc1 2012-10-09 07:07:14 +09:00
ad1843.h
adau1373.h
aess.h ASoC: TI AESS: add autogating-enable function, callable from architecture code 2013-02-10 11:22:23 -07:00
ak4xxx-adda.h
ak4113.h
ak4114.h ALSA: ak4114: Fix wrong register array size 2013-10-29 16:42:36 +01:00
ak4117.h
ak4531_codec.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
ak4641.h
alc5623.h
asequencer.h UAPI: (Scripted) Disintegrate include/sound 2012-10-09 09:49:13 +01:00
asound.h UAPI: (Scripted) Disintegrate include/sound 2012-10-09 09:49:13 +01:00
asoundef.h ALSA: Add definitions for CEA-861 Audio InfoFrames 2012-04-18 08:00:36 +02:00
atmel-abdac.h dmaengine: dw: move dw_dmac.h to where it belongs to 2014-09-11 11:48:12 +05:30
atmel-ac97c.h dmaengine: dw: move dw_dmac.h to where it belongs to 2014-09-11 11:48:12 +05:30
compress_driver.h ALSA: compress: fix drain calls blocking other compress functions (v6) 2013-11-07 10:12:27 +01:00
control.h ALSA: control: Define SNDRV_CTL_TLV_OP_* constants 2014-07-15 16:31:01 +02:00
core.h ALSA: control: Protect user controls against concurrent access 2014-06-18 15:12:33 +02:00
cs42l52.h ASoC: cs42l52: Make MICA/B mixer dependent on mic config 2013-11-28 10:20:51 +00:00
cs42l56.h ASoC: Add support for CS42L56 CODEC 2014-05-05 18:20:22 -07:00
cs42l73.h ASoC: cs42l73: Add platform data support for cs42l73 codec 2013-10-18 00:37:29 +01:00
cs4231-regs.h
cs4271.h ALSA: ASoC: cs4271: add optional soft reset workaround 2012-12-24 15:53:28 +00:00
cs8403.h
cs8427.h ALSA: cs8427: separate HW initialization 2014-04-03 14:59:48 +02:00
da7213.h ASoC: codecs: Add da7213 codec 2013-02-14 17:27:17 +00:00
da9055.h ASoC: codecs: Add DA9055 codec driver 2012-09-28 14:21:54 +01:00
designware_i2s.h ASoC: Add support for synopsys i2s controller as per ASoC framework. 2012-06-22 10:25:45 +01:00
dmaengine_pcm.h ASoC: dmaengine: add custom DMA config to snd_dmaengine_pcm_config 2013-12-09 18:45:01 +00:00
emu10k1_synth.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
emu10k1.h Revert "ALSA: emu10k1: Fix warning: "CCR" redefined" 2014-03-11 07:54:14 +01:00
emu8000_reg.h
emu8000.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
emux_legacy.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
emux_synth.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
es1688.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
gus.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
hda_hwdep.h
hda_verbs.h ALSA: hda - Split verb definitions into sound/hda_verbs.h 2013-12-09 17:31:40 +01:00
hwdep.h ALSA: hwdep: Allow to assign the given parent 2014-02-25 12:12:50 +01:00
i2c.h
info.h
initval.h ALSA: isa: Move snd_legacy_find_free_ioport to initval.h 2012-08-03 12:57:44 +02:00
jack.h
l3.h
max9768.h
max98088.h
max98090.h ASoC:: max98090: Remove executable bit 2013-03-20 10:54:12 +01:00
max98095.h ASoC: max98095: Single bit bitfields should be unsigned 2012-05-13 23:33:53 +01:00
memalloc.h ALSA: Remove memory reservation code from memalloc helper 2014-01-09 07:32:10 +01:00
minors.h
mixer_oss.h
mpu401.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
omap-pcm.h ASoC: omap-pcm: Move omap-pcm under include/sound 2014-05-26 15:32:32 +01:00
opl3.h
opl4.h
pcm_oss.h
pcm_params.h ALSA: Add params_width() helpers 2013-12-30 12:19:26 +00:00
pcm-indirect.h
pcm.h ALSA: pcm: add new DSD sampleformat for native DSD playback on XMOS based devices 2014-09-08 17:11:00 +02:00
pt2258.h
pxa2xx-lib.h ASoC: pxa: use snd_dmaengine_dai_dma_data 2013-08-15 11:29:07 +01:00
rawmidi.h ALSA: rawmidi: remove undefined functions. 2014-02-21 12:06:12 +01:00
rcar_snd.h ASoC: rsnd: SSI + DMA can select BUSIF 2014-06-28 14:41:19 +01:00
rt286.h ASoC: add RT286 CODEC driver 2014-07-04 18:50:51 +01:00
rt5640.h ASoC: rt5640: Use the platform data for DMIC settings 2014-04-14 17:27:41 +01:00
rt5645.h ASoC: rt5645: Add headset detect function 2014-10-01 19:28:44 +01:00
rt5651.h ASoC: add RT5651 CODEC driver 2014-04-18 18:52:18 +01:00
rt5670.h ASoC: add RT5670 CODEC driver 2014-07-02 20:49:25 +01:00
rt5677.h ASoC: rt5677: Add dts properties for input/output differential configuration 2014-09-29 19:46:20 +01:00
s3c24xx_uda134x.h
sb16_csp.h UAPI: (Scripted) Disintegrate include/sound 2012-10-09 09:49:13 +01:00
sb.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
seq_device.h
seq_kernel.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
seq_midi_emul.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
seq_midi_event.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
seq_oss_legacy.h
seq_oss.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
seq_virmidi.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
sh_dac_audio.h
sh_fsi.h ASoC: fsi: cleanup sh_fsi.h 2012-12-24 15:57:20 +00:00
simple_card.h ASoC: simple-card: add slot information parsing supports 2014-02-23 14:26:37 +09:00
snd_wavefront.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
soc-dai.h ASoC: core: Add initial support for DAI multicodec 2014-07-16 22:58:49 +01:00
soc-dapm.h ASoC: dapm: Introduce toplevel widget categories 2014-10-28 00:19:59 +00:00
soc-dpcm.h ASoC: DPCM: make some DPCM API calls non static for compressed usage 2014-01-17 17:56:21 +00:00
soc.h Merge remote-tracking branches 'asoc/topic/davinci', 'asoc/topic/dmic', 'asoc/topic/drivers', 'asoc/topic/es8328' and 'asoc/topic/fsl' into asoc-next 2014-10-06 12:48:57 +01:00
soundfont.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
spear_dma.h ASoC: SPEAr: remove custom DMA alloc compat function 2013-12-18 18:55:06 +00:00
spear_spdif.h ASoC: SPEAr spdif_in: Add spdif IN support 2012-06-23 11:58:10 +01:00
sta32x.h
sta350.h ASoC: sta350: add support for bits in miscellaneous registers 2014-05-05 12:52:59 -07:00
tas2552-plat.h ASoC: tas2552: Support TI TAS2552 Amplifier 2014-07-17 17:57:05 +01:00
tas5086.h ALSA: ASoC: add codec driver for TI TAS5086 2013-03-08 21:06:09 +08:00
tea6330t.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
timer.h
tlv320aic3x.h ASoC: tlv320aic3x: Convert mic bias to a supply widget 2013-02-04 18:35:19 +00:00
tlv320aic32x4.h ASoC: tlv320aic32x4: Add rstn gpio to platform data. 2012-11-01 14:35:56 +00:00
tlv320dac33-plat.h
tlv.h ALSA: Add comment for control TLV API 2013-05-08 15:43:56 +02:00
tpa6130a2-plat.h
uda134x.h
uda1380.h
util_mem.h
vx_core.h ALSA: vx: Use nonatomic PCM ops 2014-09-15 15:52:03 +02:00
wavefront.h
wm0010.h ASoC: wm0010: Add initial wm0010 DSP driver 2012-08-23 16:12:12 +01:00
wm1250-ev1.h
wm2000.h ASoC: wm2000: Use clock API integration to configure MCLK divisor 2012-12-24 15:42:35 +00:00
wm2200.h ASoC: wm2200: Provide platform data for MICBIAS configuration 2013-02-05 15:53:07 +00:00
wm5100.h
wm8903.h
wm8904.h
wm8955.h
wm8960.h ASoC: wm8960: remove 'dres' field from platform data structure 2012-09-21 08:35:06 -04:00
wm8962.h ASoC: wm8962: Let CODEC driver enable and disable its own MCLK 2014-07-31 20:51:26 +01:00
wm8993.h ASoC: wm_hubs: Allow configuration of MICBIAS power up delay via pdata 2012-08-22 19:00:37 +01:00
wm8996.h
wm9081.h
wm9090.h
wss.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00