| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | audio.rst | 6 Audio Inputs and Outputs
9 Audio inputs and outputs are physical connectors of a device. Video
11 each. Radio devices have no audio inputs or outputs. They have exactly
12 one tuner which in fact *is* an audio source, but this API associates
14 these. [#f1]_ A connector on a TV card to loop back the received audio
15 signal to a sound card is not considered an audio output.
17 Audio and video inputs and outputs are associated. Selecting a video
18 source also selects an audio source. This is most evident when the video
19 and audio source is a tuner. Further audio connectors can combine with
21 and two audio inputs exist, there may be up to four valid combinations.
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| H A D | vidioc-g-audio.rst | 13 VIDIOC_G_AUDIO - VIDIOC_S_AUDIO - Query or select the current audio input and its attributes
38 To query the current audio input applications zero out the ``reserved``
42 has no audio inputs, or none which combine with the current video input.
44 Audio inputs have one writable property, the audio mode. To select the
45 current audio input *and* change the audio mode, applications initialize
48 ioctl. Drivers may switch to a different audio mode if the request
50 return the actual new audio mode.
63 - Identifies the audio input, set by the driver or application.
66 - Name of the audio input, a NUL-terminated ASCII string, for
71 - Audio capability flags, see :ref:`audio-capability`.
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| /linux/Documentation/devicetree/bindings/sound/ |
| H A D | simple-card.yaml | 7 title: Simple Audio Card Driver
89 A list of the connections between audio components.
95 description: User specified audio sound widgets.
103 description: audio format.
154 Additional devices used by the simple audio card.
158 $ref: audio-iio-aux.yaml#
164 - simple-audio-card
165 - simple-scu-audio-card
175 simple-audio-card,name:
176 description: User specified audio sound card name.
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| H A D | fsl-asoc-card.yaml | 24 AC'97/I2S/PCM type sound cards, such as S/PDIF audio and HDMI audio, as
59 - karo,tx53-audio-sgtl5000
62 - fsl,imx-audio-ac97
63 - fsl,imx-audio-cs42888
64 - fsl,imx-audio-mqs
65 - fsl,imx-audio-sgtl5000
66 - fsl,imx-audio-wm8960
67 - fsl,imx-audio-wm8962
72 - const: fsl,imx-audio-spdif
75 - fsl,imx-audio-ac97
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| H A D | fsl,audmix.yaml | 7 title: NXP Audio Mixer (AUDMIX).
14 The Audio Mixer is a on-chip functional module that allows mixing of two
15 audio streams into a single audio stream. Audio Mixer has two input serial
16 audio interfaces. These are driven by two Synchronous Audio interface
17 modules (SAI). Each input serial interface carries 8 audio channels in its
18 frame in TDM manner. Mixer mixes audio samples of corresponding channels
19 from two interfaces into a single sample. Before mixing, audio samples of
21 Audio Mixer is also a serial audio interface. Like input interfaces it has
23 interface of audio codec and also sent to the external pins along with the
24 receive path of normal audio SAI module for readback by the CPU.
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| H A D | mediatek,mt7986-afe.yaml | 31 - description: audio bus clock
32 - description: audio 26M clock
33 - description: audio intbus clock
34 - description: audio hopping clock
35 - description: audio pll clock
37 - description: audio i2s/pcm mck
67 - description: audio bus clock
68 - description: audio 26M clock
69 - description: audio intbus clock
70 - description: audio hopping clock
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| H A D | fsl,imx-audio-es8328.yaml | 4 $id: http://devicetree.org/schemas/sound/fsl,imx-audio-es8328.yaml#
7 title: Freescale i.MX audio complex with ES8328 codec
18 const: fsl,imx-audio-es8328
32 audio-amp-supply:
35 audio-codec:
37 description: The phandle to the ES8328 audio codec
39 audio-routing:
42 A list of the connections between audio components. Each entry
48 * audio-amp
68 description: The internal port of the i.MX audio muxer (AUDMUX)
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| H A D | fsl,rpmsg.yaml | 7 title: NXP Audio RPMSG CPU DAI Controller
13 fsl_rpmsg is a virtual audio device. Mapping to real hardware devices
15 Linux side is a device which provides audio service by rpmsg channel.
26 - fsl,imx7ulp-rpmsg-audio
27 - fsl,imx8mn-rpmsg-audio
28 - fsl,imx8mm-rpmsg-audio
29 - fsl,imx8mp-rpmsg-audio
30 - fsl,imx8ulp-rpmsg-audio
31 - fsl,imx93-rpmsg-audio
32 - fsl,imx95-rpmsg-audio
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| /linux/drivers/gpu/drm/msm/dp/ |
| H A D | dp_audio.c | 46 static void dp_audio_stream_sdp(struct dp_audio_private *audio) in dp_audio_stream_sdp() argument
48 struct dp_catalog *catalog = audio->catalog; in dp_audio_stream_sdp()
60 drm_dbg_dp(audio->drm_dev, in dp_audio_stream_sdp()
73 drm_dbg_dp(audio->drm_dev, in dp_audio_stream_sdp()
84 new_value = audio->channels - 1; in dp_audio_stream_sdp()
88 drm_dbg_dp(audio->drm_dev, in dp_audio_stream_sdp()
96 static void dp_audio_timestamp_sdp(struct dp_audio_private *audio) in dp_audio_timestamp_sdp() argument
98 struct dp_catalog *catalog = audio->catalog; in dp_audio_timestamp_sdp()
110 drm_dbg_dp(audio->drm_dev, in dp_audio_timestamp_sdp()
124 drm_dbg_dp(audio->drm_dev, in dp_audio_timestamp_sdp()
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| /linux/drivers/mfd/ |
| H A D | twl4030-audio.c | 3 * MFD driver for twl4030 audio submodule, which contains an audio codec, and
21 #include <linux/mfd/twl4030-audio.h>
46 struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev); in twl4030_audio_set_resource() local
50 audio->resource[id].reg); in twl4030_audio_set_resource()
53 val |= audio->resource[id].mask; in twl4030_audio_set_resource()
55 val &= ~audio->resource[id].mask; in twl4030_audio_set_resource()
58 val, audio->resource[id].reg); in twl4030_audio_set_resource()
65 struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev); in twl4030_audio_get_resource() local
69 audio->resource[id].reg); in twl4030_audio_get_resource()
80 struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev); in twl4030_audio_enable_resource() local
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| /linux/drivers/gpu/drm/radeon/ |
| H A D | radeon_audio.c | 212 if (rdev->audio.funcs->enable) in radeon_audio_enable()
213 rdev->audio.funcs->enable(rdev, pin, enable_mask); in radeon_audio_enable()
221 rdev->audio.funcs = &dce6_funcs; in radeon_audio_interface_init()
222 rdev->audio.hdmi_funcs = &dce6_hdmi_funcs; in radeon_audio_interface_init()
223 rdev->audio.dp_funcs = &dce6_dp_funcs; in radeon_audio_interface_init()
225 rdev->audio.funcs = &dce4_funcs; in radeon_audio_interface_init()
226 rdev->audio.hdmi_funcs = &dce4_hdmi_funcs; in radeon_audio_interface_init()
227 rdev->audio.dp_funcs = &dce4_dp_funcs; in radeon_audio_interface_init()
229 rdev->audio.funcs = &dce32_funcs; in radeon_audio_interface_init()
230 rdev->audio.hdmi_funcs = &dce32_hdmi_funcs; in radeon_audio_interface_init()
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| /linux/sound/soc/fsl/ |
| H A D | Kconfig | 2 menu "SoC Audio for Freescale CPUs"
4 comment "Common SoC Audio options for Freescale CPUs:"
18 tristate "Synchronous Audio Interface (SAI) module support"
24 Say Y if you want to add Synchronous Audio Interface (SAI)
40 tristate "Audio Mixer (AUDMIX) module support"
43 Say Y if you want to add Audio Mixer (AUDMIX)
71 tristate "Enhanced Serial Audio Interface (ESAI) module support"
75 Say Y if you want to add Enhanced Synchronous Audio Interface
97 a digital module that converts audio from a source sample rate to a
102 tristate "NXP Audio Transceiver (XCVR) module support"
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| /linux/sound/soc/qcom/qdsp6/ |
| H A D | q6routing.c | 741 SND_SOC_DAPM_MIXER("DISPLAY_PORT_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
745 SND_SOC_DAPM_MIXER("SLIMBUS_0_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
748 SND_SOC_DAPM_MIXER("SLIMBUS_1_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
751 SND_SOC_DAPM_MIXER("SLIMBUS_2_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
754 SND_SOC_DAPM_MIXER("SLIMBUS_3_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
757 SND_SOC_DAPM_MIXER("SLIMBUS_4_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
760 SND_SOC_DAPM_MIXER("SLIMBUS_5_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
763 SND_SOC_DAPM_MIXER("SLIMBUS_6_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
766 SND_SOC_DAPM_MIXER("PRI_MI2S_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
769 SND_SOC_DAPM_MIXER("SEC_MI2S_RX Audio Mixer", SND_SOC_NOPM, 0, 0,
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| /linux/sound/soc/samsung/ |
| H A D | Kconfig | 9 the Samsung SoCs' Audio interfaces. You will also need to
10 select the audio interfaces to support below.
25 tristate "SoC I2S Audio support for WM8994 on SMDK"
31 Say Y if you want to add support for SoC audio on the SMDKs.
34 tristate "SoC S/PDIF Audio support for SMDK"
37 Say Y if you want to add support for SoC S/PDIF audio on the SMDK.
40 tristate "SoC PCM Audio support for WM8994 on SMDK"
46 Say Y if you want to add support for SoC audio on the SMDK
49 tristate "Audio support for Wolfson Speyside"
59 tristate "Audio support for Wolfson Tobermory"
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| /linux/sound/pci/hda/ |
| H A D | Kconfig | 2 menu "HD-Audio"
15 tristate "HD Audio PCI"
21 Audio" (Azalia) and its compatible devices.
23 This option enables the HD-audio controller. Don't forget
30 tristate "NVIDIA Tegra HD Audio"
38 This options enables support for the HD Audio controller
39 present in some NVIDIA Tegra SoCs, used to communicate audio
48 bool "Build hwdep interface for HD-audio driver"
51 Say Y here to build a hwdep interface for HD-audio driver.
58 Say Y here to enable the HD-audio codec re-configuration feature.
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| /linux/drivers/gpu/drm/i915/display/ |
| H A D | intel_lpe_audio.c | 31 * DOC: LPE Audio integration for HDMI or DP playback
36 * mode is unrelated to the LPE aka SST audio engine, the documentation refers
41 * subsystems, a bridge is setup between the hdmi-lpe-audio and i915:
44 * 3. Create IRQ chip to forward the LPE audio irqs.
45 * the hdmi-lpe-audio driver probes the lpe audio device and creates a new
50 * uninstall the hdmi-lpe-audio driver before uninstalling i915 module,
52 * platform device: even though hdmi-lpe-audio driver is released, the modules
58 * When forwarding LPE audio irqs, the flow control handler selection depends
80 #define HAS_LPE_AUDIO(dev_priv) ((dev_priv)->display.audio.lpe.platdev != NULL)
101 rsc[0].start = rsc[0].end = dev_priv->display.audio.lpe.irq; in lpe_audio_platdev_create()
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| /linux/Documentation/sound/designs/ |
| H A D | timestamping.rst | 42 of time as measured by different components of audio hardware. In
74 audio time it wants reported by selecting the relevant settings in
83 In case the application requests an audio tstamp that is not supported
92 The audio timestamp accuracy can be returned to user-space, so that
100 - the link time can be used to track long-term drifts between audio
110 - including the delay in the audio timestamp may
117 audio applications...
127 The ALSA API only allows for a single audio timestamp to be reported
128 at a time. This is a conscious design decision, reading the audio
131 are. To avoid any interpretation issues, a single (system, audio)
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| /linux/drivers/gpu/drm/msm/hdmi/ |
| H A D | hdmi_audio.c | 10 /* maps MSM_HDMI_AUDIO_CHANNEL_n consts used by audio driver to # of channels: */
13 /* Supported HDMI Audio sample rates */
36 /* Audio constants lookup table for hdmi_msm_audio_acr_setup */
76 struct hdmi_audio *audio = &hdmi->audio; in msm_hdmi_audio_update() local
77 struct hdmi_audio_infoframe *info = &audio->infoframe; in msm_hdmi_audio_update()
79 bool enabled = audio->enabled; in msm_hdmi_audio_update()
83 DBG("audio: enabled=%d, channels=%d, channel_allocation=0x%x, " in msm_hdmi_audio_update()
85 audio->enabled, info->channels, info->channel_allocation, in msm_hdmi_audio_update()
86 info->level_shift_value, info->downmix_inhibit, audio->rate); in msm_hdmi_audio_update()
90 DBG("disabling audio: no video"); in msm_hdmi_audio_update()
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| /linux/drivers/usb/gadget/function/ |
| H A D | f_uac1_legacy.c | 3 * f_audio.c -- USB Audio class function driver
44 * in the Audio Interface Collection
240 * This function is an ALSA sound card following USB Audio Class Spec 1.0.
303 struct f_audio *audio = container_of(data, struct f_audio, in f_audio_playback_work() local
307 spin_lock_irq(&audio->lock); in f_audio_playback_work()
308 if (list_empty(&audio->play_queue)) { in f_audio_playback_work()
309 spin_unlock_irq(&audio->lock); in f_audio_playback_work()
312 play_buf = list_first_entry(&audio->play_queue, in f_audio_playback_work()
315 spin_unlock_irq(&audio->lock); in f_audio_playback_work()
317 u_audio_playback(&audio->card, play_buf->buf, play_buf->actual); in f_audio_playback_work()
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| /linux/sound/soc/qcom/ |
| H A D | Kconfig | 6 Say Y or M if you want to add support to use audio devices
56 Say Y or M if you want add support for SoC audio on the
60 tristate "SoC Audio support for APQ8016 SBC platforms"
64 Support for Qualcomm Technologies LPASS audio block in
66 Say Y if you want to use audio devices on MI2S.
122 tristate "SoC ALSA audio driver for QDSP6"
138 To add support for MSM QDSP6 Soc Audio.
140 audio drivers. This includes q6asm, q6adm,
150 Support for Qualcomm Technologies LPASS audio block in
152 Say Y if you want to use audio device on this SoCs
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| /linux/sound/soc/ti/ |
| H A D | Kconfig | 2 menu "Audio support for Texas Instruments SoCs"
19 tristate "daVinci Audio Serial Port (ASP) or McBSP support"
23 Say Y or M here if you want audio support via daVinci ASP or McBSP.
28 tristate "Multichannel Audio Serial Port (McASP) support"
67 comment "Audio support for boards with Texas Instruments SoCs"
69 tristate "SoC Audio support for Nokia N810"
74 Say Y or M if you want to add support for SoC audio on Nokia N810.
77 tristate "SoC Audio support for Nokia RX-51"
83 Say Y or M if you want to add support for SoC audio on Nokia RX-51
87 tristate "SoC Audio support for OMAP3 Pandora"
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| /linux/sound/soc/tegra/ |
| H A D | Kconfig | 3 tristate "SoC Audio for the Tegra System-on-Chip"
10 Say Y or M here if you want support for SoC audio on Tegra.
63 Config to enable Audio Hub (AHUB) module, which comprises of a
64 switch called Audio Crossbar (AXBAR) used to configure or modify
65 the audio routing path between various HW accelerators present in
114 converts the multi-bit Pulse Code Modulation (PCM) audio input to
126 Audio Hub (AHUB). Each ADMA channel that sends/receives data to/
154 Config to enable the Audio Multiplexer (AMX) which can multiplex
163 Config to enable the Audio Demultiplexer (ADX) which takes an
175 audio streams. It supports mixing of up to 10 input streams,
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| /linux/drivers/gpu/drm/amd/display/dc/inc/hw/ |
| H A D | audio.h | 31 struct audio;
35 bool (*endpoint_valid)(struct audio *audio);
37 void (*hw_init)(struct audio *audio);
39 void (*az_enable)(struct audio *audio);
41 void (*az_disable)(struct audio *audio);
43 void (*az_configure)(struct audio *audio,
49 void (*az_disable_hbr_audio)(struct audio *audio);
51 void (*wall_dto_setup)(struct audio *audio,
56 void (*destroy)(struct audio **audio);
59 struct audio { struct
|
| /linux/drivers/gpu/drm/bridge/synopsys/ |
| H A D | dw-hdmi-i2s-audio.c | 3 * dw-hdmi-i2s-audio.c
18 #include "dw-hdmi-audio.h"
20 #define DRIVER_NAME "dw-hdmi-i2s-audio"
22 static inline void hdmi_write(struct dw_hdmi_i2s_audio_data *audio, in hdmi_write() argument
25 struct dw_hdmi *hdmi = audio->hdmi; in hdmi_write()
27 audio->write(hdmi, val, offset); in hdmi_write()
30 static inline u8 hdmi_read(struct dw_hdmi_i2s_audio_data *audio, int offset) in hdmi_read() argument
32 struct dw_hdmi *hdmi = audio->hdmi; in hdmi_read()
34 return audio->read(hdmi, offset); in hdmi_read()
41 struct dw_hdmi_i2s_audio_data *audio = data; in dw_hdmi_i2s_hw_params() local
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| /linux/drivers/gpu/drm/amd/display/dc/dce/ |
| H A D | dce_audio.c | 31 #define DCE_AUD(audio)\ argument
32 container_of(audio, struct dce_audio, base)
50 read_indirect_azalia_reg(audio, IX_REG(reg_name))
53 write_indirect_azalia_reg(audio, IX_REG(reg_name), value)
55 static void write_indirect_azalia_reg(struct audio *audio, in write_indirect_azalia_reg() argument
59 struct dce_audio *aud = DCE_AUD(audio); in write_indirect_azalia_reg()
70 static uint32_t read_indirect_azalia_reg(struct audio *audio, uint32_t reg_index) in read_indirect_azalia_reg() argument
72 struct dce_audio *aud = DCE_AUD(audio); in read_indirect_azalia_reg()
162 /* Also do some calculation for the available Audio Bandwidth for the in check_audio_bandwidth_hdmi()
176 /* Number of Audio Packets (multiplied by 10) per Line (for 8 ch number in check_audio_bandwidth_hdmi()
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