| /linux-5.10/Documentation/sound/cards/ |
| D | cmipci.rst | 2 Brief Notes on C-Media 8338/8738/8768/8770 Driver
8 Front/Rear Multi-channel Playback
9 ---------------------------------
12 channels can be used for front/rear playbacks. Since there are two
13 DACs, both streams are handled independently unlike the 4/6ch multi-
18 (hw:0,1) is assigned to the second DAC for rear playback.
22 - The first DAC supports U8 and S16LE formats, while the second DAC
24 - The second DAC supports only two channel stereo.
26 Please note that the CM8x38 DAC doesn't support continuous playback
44 on and "double DAC" mode. Actually I could hear separate 4 channels
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| D | audiophile-usb.rst | 2 Guide to using M-Audio Audiophile USB with ALSA and Jack
9 This document is a guide to using the M-Audio Audiophile USB (tm) device with
15 * v1.4 - Thibault Le Meur (2007-07-11)
17 - Added Low Endianness nature of 16bits-modes
19 - Modifying document structure
21 * v1.5 - Thibault Le Meur (2007-07-12)
22 - Added AC3/DTS passthru info
35 - This port supports 2 pairs of line-level audio inputs (1/4" TS and RCA)
36 - When the 1/4" TS (jack) connectors are connected, the RCA connectors
57 * 16-bit/48kHz ==> 4 channels in + 4 channels out
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| D | hdspm.rst | 2 Software Interface ALSA-DSP MADI Driver
5 (translated from German, so no good English ;-),
7 2004 - winfried ritsch
11 the Controls and startup-options are ALSA-Standard and only the
19 ------------------
21 * number of channels -- depends on transmission mode
23 The number of channels chosen is from 1..Nmax. The reason to
24 use for a lower number of channels is only resource allocation,
25 since unused DMA channels are disabled and less memory is
29 * Single Speed -- 1..64 channels
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| /linux-5.10/Documentation/devicetree/bindings/sound/ |
| D | rockchip-i2s.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/sound/rockchip-i2s.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 The I2S bus (Inter-IC sound bus) is a serial link for digital
14 - Heiko Stuebner <heiko@sntech.de>
19 - const: rockchip,rk3066-i2s
20 - items:
21 - enum:
22 - rockchip,px30-i2s
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| D | xlnx,i2s.txt | 1 Device-Tree bindings for Xilinx I2S PL block
3 The IP supports I2S based playback/capture audio
6 - compatible: "xlnx,i2s-transmitter-1.0" for playback and
7 "xlnx,i2s-receiver-1.0" for capture
9 Required property common to both I2S playback and capture:
10 - reg: Base address and size of the IP core instance.
11 - xlnx,dwidth: sample data width. Can be any of 16, 24.
12 - xlnx,num-channels: Number of I2S streams. Can be any of 1, 2, 3, 4.
13 supported channels = 2 * xlnx,num-channels
18 compatible = "xlnx,i2s-receiver-1.0";
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| D | fsl,ssi.txt | 4 be programmed in AC97, I2S, left-justified, or right-justified modes.
7 - compatible: Compatible list, should contain one of the following
9 fsl,mpc8610-ssi
10 fsl,imx51-ssi
11 fsl,imx35-ssi
12 fsl,imx21-ssi
13 - cell-index: The SSI, <0> = SSI1, <1> = SSI2, and so on.
14 - reg: Offset and length of the register set for the device.
15 - interrupts: <a b> where a is the interrupt number and b is a
21 - fsl,fifo-depth: The number of elements in the transmit and receive FIFOs.
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| D | simple-card.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/sound/simple-card.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
14 frame-master:
15 description: Indicates dai-link frame master.
16 $ref: /schemas/types.yaml#/definitions/phandle-array
19 bitclock-master:
20 description: Indicates dai-link bit clock master
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| /linux-5.10/drivers/usb/gadget/function/ |
| D | u_uac1_legacy.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * u_uac1.c -- ALSA audio utilities for Gadget stack
24 /*-------------------------------------------------------------------------*/
47 changed = -EINVAL; in _snd_pcm_hw_param_set()
53 val--; in _snd_pcm_hw_param_set()
60 changed = -EINVAL; in _snd_pcm_hw_param_set()
71 t.min = val - 1; in _snd_pcm_hw_param_set()
80 return -EINVAL; in _snd_pcm_hw_param_set()
82 params->cmask |= 1 << var; in _snd_pcm_hw_param_set()
83 params->rmask |= 1 << var; in _snd_pcm_hw_param_set()
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| /linux-5.10/sound/soc/tegra/ |
| D | tegra210_i2s.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 // tegra210_i2s.c - Tegra210 I2S driver
42 regmap_write(regmap, TEGRA210_I2S_SLOT_CTRL, total_slots - 1); in tegra210_i2s_set_slot_ctrl()
54 regmap_read(i2s->regmap, TEGRA210_I2S_CTRL, &val); in tegra210_i2s_set_clock_rate()
60 err = clk_set_rate(i2s->clk_i2s, clock_rate); in tegra210_i2s_set_clock_rate()
67 if (!IS_ERR(i2s->clk_sync_input)) { in tegra210_i2s_set_clock_rate()
73 err = clk_set_rate(i2s->clk_sync_input, clock_rate); in tegra210_i2s_set_clock_rate()
88 struct device *dev = compnt->dev; in tegra210_i2s_sw_reset()
107 regmap_read(i2s->regmap, cif_reg, &cif_ctrl); in tegra210_i2s_sw_reset()
108 regmap_read(i2s->regmap, stream_reg, &stream_ctrl); in tegra210_i2s_sw_reset()
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| D | tegra186_dspk.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 // tegra186_dspk.c - Tegra186 DSPK driver
35 if (strstr(kcontrol->id.name, "FIFO Threshold")) in tegra186_dspk_get_control()
36 ucontrol->value.integer.value[0] = dspk->rx_fifo_th; in tegra186_dspk_get_control()
37 else if (strstr(kcontrol->id.name, "OSR Value")) in tegra186_dspk_get_control()
38 ucontrol->value.integer.value[0] = dspk->osr_val; in tegra186_dspk_get_control()
39 else if (strstr(kcontrol->id.name, "LR Polarity Select")) in tegra186_dspk_get_control()
40 ucontrol->value.integer.value[0] = dspk->lrsel; in tegra186_dspk_get_control()
41 else if (strstr(kcontrol->id.name, "Channel Select")) in tegra186_dspk_get_control()
42 ucontrol->value.integer.value[0] = dspk->ch_sel; in tegra186_dspk_get_control()
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| /linux-5.10/sound/soc/amd/ |
| D | acp.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
13 /* Playback and Capture Offset for Stoney */
26 * playback and SRAM Bank 2 for capture where as in case of BT I2S
27 * Instance, Stoney uses SRAM Bank 3 for playback & SRAM Bank 4 will
29 * 1, 2, 3, 4 will be used for playback & SRAM Banks 5, 6, 7, 8 will be used
72 /* Playback DMA channels */
76 /* Capture DMA channels */
80 /* Playback DMA Channels for I2S BT instance */
84 /* Capture DMA Channels for I2S BT Instance */
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| /linux-5.10/Documentation/sound/designs/ |
| D | control-names.rst | 8 ---------------
16 Playback one direction
18 Bypass Playback one direction
33 <nothing> channel independent, or applies to all channels
34 Front front left/right channels
36 CLFE C/LFE channels
68 Headset Mic mic part of combined headset jack - 4-pin
70 Headphone Mic mic part of either/or - 3-pin headphone or mic
79 Analog Loopback D/A -> A/D loopback
80 Digital Loopback playback -> capture loopback -
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| D | oss-emulation.rst | 2 Notes on Kernel OSS-Emulation
13 as add-on kernel modules, snd-pcm-oss, snd-mixer-oss and snd-seq-oss.
18 is called. The alias is defined ``sound-service-x-y``, where x and y are
22 Only necessary step for auto-loading of OSS modules is to define the
25 alias sound-slot-0 snd-emu10k1
27 As the second card, define ``sound-slot-1`` as well.
29 ``alias sound-slot-0 snd-card-0`` doesn't work any more like the old
38 after the corresponding OSS-emulation module is loaded. Don't worry
79 snd-pcm-oss and snd-rawmidi. In the case of PCM, the following
80 options are available for snd-pcm-oss:
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| /linux-5.10/sound/soc/ti/ |
| D | davinci-i2s.c | 1 // SPDX-License-Identifier: GPL-2.0-only
9 * based on davinci-mcasp.c DT support
31 #include "edma-pcm.h"
32 #include "davinci-i2s.h"
34 #define DRV_NAME "davinci-i2s"
39 * - This driver supports the "Audio Serial Port" (ASP),
42 * - But it labels it a "Multi-channel Buffered Serial Port"
44 * backward-compatible, possibly explaining that confusion.
46 * - OMAP chips have a controller called McBSP, which is
49 * - Newer DaVinci chips have a controller called McASP,
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| D | omap-mcpdm.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * omap-mcpdm.c -- OMAP ALSA SoC DAI driver using McPDM port
5 * Copyright (C) 2009 - 2011 Texas Instruments
30 #include "omap-mcpdm.h"
31 #include "sdma-pcm.h"
48 /* Playback/Capture configuration */
51 /* McPDM dn offsets for rx1, and 2 channels */
69 writel_relaxed(val, mcpdm->io_base + reg); in omap_mcpdm_write()
74 return readl_relaxed(mcpdm->io_base + reg); in omap_mcpdm_read()
80 dev_dbg(mcpdm->dev, "***********************\n"); in omap_mcpdm_reg_dump()
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| /linux-5.10/sound/isa/gus/ |
| D | gusmax.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
26 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
33 static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
34 /* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
35 static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24}; variable
36 static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
53 MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS MAX driver."…
54 module_param_array(channels, int, NULL, 0444);
55 MODULE_PARM_DESC(channels, "Used GF1 channels for GUS MAX driver.");
57 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS MAX driver.");
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| /linux-5.10/sound/usb/misc/ |
| D | ua101.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Edirol UA-101/UA-1000 driver
19 MODULE_DESCRIPTION("Edirol UA-101/1000 driver");
22 MODULE_SUPPORTED_DEVICE("{{Edirol,UA-101},{Edirol,UA-1000}}");
33 * This magic value optimizes memory usage efficiency for the UA-101's packet
56 __stringify(MIN_QUEUE_LENGTH)"-"__stringify(MAX_QUEUE_LENGTH));
93 /* FIFO to synchronize playback rate to capture rate */
106 unsigned int channels; member
122 } capture, playback; member
135 case -ENODEV: in usb_error_string()
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| /linux-5.10/sound/firewire/dice/ |
| D | dice-pcm.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * dice_pcm.c - a part of driver for DICE based devices
6 * Copyright (c) 2014 Takashi Sakamoto <o-takashi@sakamocchi.jp>
14 struct snd_pcm_substream *substream = rule->private; in dice_rate_constraint()
15 struct snd_dice *dice = substream->private_data; in dice_rate_constraint()
16 unsigned int index = substream->pcm->device; in dice_rate_constraint()
29 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) in dice_rate_constraint()
30 pcm_channels = dice->tx_pcm_chs[index]; in dice_rate_constraint()
32 pcm_channels = dice->rx_pcm_chs[index]; in dice_rate_constraint()
52 struct snd_pcm_substream *substream = rule->private; in dice_channels_constraint()
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| /linux-5.10/sound/soc/xilinx/ |
| D | xlnx_i2s.c | 1 // SPDX-License-Identifier: GPL-2.0
31 return -EINVAL; in xlnx_i2s_set_sclkout_div()
48 reg_off = I2S_CH0_OFFSET + ((chan_id - 1) * 4); in xlnx_i2s_hw_params()
50 chan_id--; in xlnx_i2s_hw_params()
73 return -EINVAL; in xlnx_i2s_trigger()
90 { .compatible = "xlnx,i2s-transmitter-1.0", },
91 { .compatible = "xlnx,i2s-receiver-1.0", },
102 struct device *dev = &pdev->dev; in xlnx_i2s_probe()
103 struct device_node *node = dev->of_node; in xlnx_i2s_probe()
105 dai_drv = devm_kzalloc(&pdev->dev, sizeof(*dai_drv), GFP_KERNEL); in xlnx_i2s_probe()
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| /linux-5.10/sound/pci/ctxfi/ |
| D | ctpcm.c | 1 // SPDX-License-Identifier: GPL-2.0-only
19 /* Hardware descriptions for playback */
97 if (!apcm->substream) in ct_atc_pcm_interrupt()
100 snd_pcm_period_elapsed(apcm->substream); in ct_atc_pcm_interrupt()
105 struct ct_atc_pcm *apcm = runtime->private_data; in ct_atc_pcm_free_substream()
106 struct ct_atc *atc = snd_pcm_substream_chip(apcm->substream); in ct_atc_pcm_free_substream()
108 atc->pcm_release_resources(atc, apcm); in ct_atc_pcm_free_substream()
109 ct_timer_instance_free(apcm->timer); in ct_atc_pcm_free_substream()
111 runtime->private_data = NULL; in ct_atc_pcm_free_substream()
114 /* pcm playback operations */
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| /linux-5.10/sound/pci/ca0106/ |
| D | ca0106.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
24 …* Enable playback 48000 and 96000 rates. (Rates other that these do not work, even with "plug:f…
28 …* Correct interrupt timing. interrupt at end of period, instead of in the middle of a playback …
31 * Single trigger call for multi channels.
34 * playback periods_min=2, periods_max=8
36 * playback hw constraints require period_size = n * 64 bytes.
50 * Implement support for Line-in capture on SB Live 24bit.
73 #define IPR_MIDI_RX_B 0x00020000 /* MIDI UART-B Receive buffer non-empty */
74 #define IPR_MIDI_TX_B 0x00010000 /* MIDI UART-B Transmit buffer empty */
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| /linux-5.10/include/uapi/sound/ |
| D | asoc.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * uapi/sound/asoc.h -- ALSA SoC Firmware Controls and DAPM
23 * Maximum number of channels topology kcontrol can represent.
42 /* individual kcontrol info types - can be mixed with other types */
53 /* individual widget kcontrol info types - can be mixed with other types */
60 /* DAPM widget types - add new items to the end */
120 /* vendor block IDs - please add new vendor types to end */
303 __le32 channels_min; /* min channels */
304 __le32 channels_max; /* max channels */
324 __le32 channels; /* channels */ member
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| /linux-5.10/sound/soc/intel/boards/ |
| D | haswell.c | 1 // SPDX-License-Identifier: GPL-2.0-only
13 #include <sound/soc-acpi.h>
32 {"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
40 struct snd_interval *channels = hw_param_interval(params, in haswell_ssp0_fixup() local
44 rate->min = rate->max = 48000; in haswell_ssp0_fixup()
45 channels->min = channels->max = 2; in haswell_ssp0_fixup()
63 dev_err(rtd->dev, "can't set codec sysclk configuration\n"); in haswell_rt5640_hw_params()
68 snd_soc_component_update_bits(codec_dai->component, 0x83, 0xffff, 0x8000); in haswell_rt5640_hw_params()
93 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-INT33CA:00", "rt5640-aif1")));
96 DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio")));
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| /linux-5.10/sound/soc/codecs/ |
| D | ad193x.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
30 * AD193X volume/mute/de-emphasis etc. controls
37 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
67 /* DAC de-emphasis */
68 SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
78 /* ADC high-pass filter */
84 SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
105 struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm); in ad193x_check_pll()
108 return !!ad193x->sysclk; in ad193x_check_pll()
131 switch (ad193x->type) { in ad193x_has_adc()
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| D | hdmi-codec.c | 1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
16 #include <sound/hdmi-codec.h>
21 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
64 { .channels = 2,
69 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
71 { .channels = 2, /* CA_ID 0x00 */
73 { .channels = 4, /* CA_ID 0x01 */
76 { .channels = 4, /* CA_ID 0x02 */
79 { .channels = 4, /* CA_ID 0x03 */
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