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/linux/Documentation/devicetree/bindings/sound/
H A Ddai-params.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/dai-params.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
15 convert-channels:
16 description: Number of audio channels used by DAI
21 convert-sample-format:
25 - s8
26 - s16_le
[all …]
/linux/sound/isa/sb/
H A Demu8000_pcm.c1 // SPDX-License-Identifier: GPL-2.0-or-later
17 * define the following if you want to use this pcm with non-interleaved mode
21 /* NOTE: for using the non-interleaved mode with alsa-lib, you have to set
34 * besides, for the time being, the non-interleaved mode doesn't work well on
35 * alsa-lib...
65 * open up channels for the simultaneous data transfer and playback
68 emu8k_open_dram_for_pcm(struct snd_emu8000 *emu, int channels) in emu8k_open_dram_for_pcm() argument
73 snd_emux_lock_voice(emu->emu, 0); in emu8k_open_dram_for_pcm()
74 if (channels > 1) in emu8k_open_dram_for_pcm()
75 snd_emux_lock_voice(emu->emu, 1); in emu8k_open_dram_for_pcm()
[all …]
/linux/sound/core/oss/
H A Dlinear.c2 * Linear conversion Plug-In
4 * Abramo Bagnara <abramo@alsa-project.org>
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
48 memcpy(p + data->copy_ofs, src + data->src_ofs, data->copy_bytes); in do_convert()
49 if (data->cvt_endian) in do_convert()
51 tmp ^= data->flip; in do_convert()
52 memcpy(dst, p + data->dst_ofs, data->dst_bytes); in do_convert()
55 static void convert(struct snd_pcm_plugin *plugin, in convert() function
60 struct linear_priv *data = (struct linear_priv *)plugin->extra_data; in convert()
62 int nchannels = plugin->src_format.channels; in convert()
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H A Dmulaw.c2 * Mu-Law conversion Plug-In Interface
4 * Uros Bizjak <uros@kss-loka.si>
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #define SIGN_BIT (0x80) /* Sign bit for a u-law byte. */
31 #define NSEGS (8) /* Number of u-law segments. */
55 * linear2ulaw() - Convert a linear PCM value to u-law
58 * is biased by adding 33 which shifts the encoding range from (0 - 8158) to
59 * (33 - 8191). The result can be seen in the following encoding table:
62 * ------------------------ ---------------
75 * four bits wxyz. * The trailing bits (a - h) are ignored.
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/linux/drivers/comedi/drivers/
H A Dni_daq_700.c1 // SPDX-License-Identifier: GPL-2.0+
4 * Driver for DAQCard-700 DIO/AI
7 * COMEDI - Linux Control and Measurement Device Interface
13 * Description: National Instruments PCMCIA DAQCard-700
16 * Devices: [National Instruments] PCMCIA DAQ-Card-700 (ni_daq_700)
20 * The daqcard-700 appears in Comedi as a digital I/O subdevice (0) with
21 * 16 channels and a analog input subdevice (1) with 16 single-ended channels
22 * or 8 differential channels, and three input ranges.
24 * Digital: The channel 0 corresponds to the daqcard-700's output
27 * Digital direction configuration: channels 0-7 output, 8-15 input.
[all …]
/linux/drivers/hwmon/
H A Dgsc-hwmon.c1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/hwmon-sysfs.h>
59 u8 reg = hwmon->pdata->fan_base + (2 * attr->index); in pwm_auto_point_temp_show()
63 ret = regmap_bulk_read(hwmon->regmap, reg, regs, 2); in pwm_auto_point_temp_show()
77 u8 reg = hwmon->pdata->fan_base + (2 * attr->index); in pwm_auto_point_temp_store()
83 return -EINVAL; in pwm_auto_point_temp_store()
90 err = regmap_bulk_write(hwmon->regmap, reg, regs, 2); in pwm_auto_point_temp_store()
103 return sprintf(buf, "%d\n", 255 * (50 + (attr->index * 10))); in pwm_auto_point_pwm_show()
157 ch = hwmon->in_ch[channel]; in gsc_hwmon_read()
160 ch = hwmon->temp_ch[channel]; in gsc_hwmon_read()
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H A Dmr75203.c1 // SPDX-License-Identifier: GPL-2.0
111 #define PVT_TEMP_MIN_mC -40000
117 #define PVT_SERIES5_J_CONST -100
133 * struct voltage_device - VM single input parameters.
139 * The structure provides mapping between channel-number (0..N-1) to VM-index
140 * (0..num_vm-1) and channel-index (0..ch_num-1) where N = num_vm * ch_num.
150 * struct voltage_channels - VM channel count.
151 * @total: Total number of channels in all VMs.
152 * @max: Maximum number of channels among all VMs.
188 struct pvt_device *pvt = file->private_data; in pvt_ts_coeff_j_read()
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/linux/Documentation/devicetree/bindings/iio/afe/
H A Dtemperature-transducer.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/temperature-transducer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Liam Beguin <liambeguin@gmail.com>
19 When an io-channel measures the output voltage of a temperature analog front
35 -----
37 +---+---+
39 +---+---+ -----
41 V proportional to T +----+----+
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/linux/Documentation/devicetree/bindings/hwmon/
H A Dmoortec,mr75203.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rahul Tanwar <rtanwar@maxlinear.com>
19 *) Temperature Sensor (TS) - used to monitor core temperature (e.g. mr74137).
20 *) Voltage Monitor (VM) - used to monitor voltage levels (e.g. mr74138).
21 *) Process Detector (PD) - used to assess silicon speed (e.g. mr74139).
22 *) Delay Chain - ring oscillator connected to the PD, used to measure IO
25 *) Pre Scaler - provides divide-by-X scaling of input voltage, which can then
26 be presented for VM for measurement within its range (e.g. mr76006 -
[all …]
/linux/sound/usb/
H A Dproc.c1 // SPDX-License-Identifier: GPL-2.0-or-later
18 /* convert our full speed USB rate into sampling rate in Hz */
24 /* convert our high speed USB rate into sampling rate in Hz */
35 struct snd_usb_audio *chip = entry->private_data; in proc_audio_usbbus_read()
36 if (!atomic_read(&chip->shutdown)) in proc_audio_usbbus_read()
37 snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum); in proc_audio_usbbus_read()
42 struct snd_usb_audio *chip = entry->private_data; in proc_audio_usbid_read()
43 if (!atomic_read(&chip->shutdown)) in proc_audio_usbid_read()
45 USB_ID_VENDOR(chip->usb_id), in proc_audio_usbid_read()
46 USB_ID_PRODUCT(chip->usb_id)); in proc_audio_usbid_read()
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/linux/drivers/staging/vc04_services/bcm2835-audio/
H A Dbcm2835.h1 /* SPDX-License-Identifier: GPL-2.0 */
11 #include <sound/pcm-indirect.h>
25 // convert alsa to chip volume (defined as macro rather than function call)
26 #define alsa2chip(vol) ((uint)(-(((vol) << 8) / 100)))
28 // convert chip to alsa volume
29 #define chip2alsa(vol) -(((vol) * 100) >> 8)
51 /* definition of the chip-specific record */
100 unsigned int channels, unsigned int samplerate,
/linux/include/linux/iio/adc/
H A Dqcom-vadc-common.h1 /* SPDX-License-Identifier: GPL-2.0 */
17 /* Max ADC code represents full-scale range of 1.8V */
35 /* Default decimation - 1024 for rev2, 840 for pmic5 */
48 #define PMI_CHG_SCALE_1 -138890
59 * VADC_CALIB_ABSOLUTE: uses the 625mV and 1.25V as reference channels.
69 * struct vadc_linear_graph - Represent ADC characteristics.
84 * enum vadc_scale_fn_type - Scaling function to convert ADC code to
86 * SCALE_DEFAULT: Default scaling to convert raw adc code to voltage (uV).
92 * SCALE_HW_CALIB_DEFAULT: Default scaling to convert raw adc code to
/linux/Documentation/core-api/
H A Ddma-isa-lpc.rst12 ------------------------
16 #include <linux/dma-mapping.h>
19 The first is the generic DMA API used to convert virtual addresses to
20 bus addresses (see Documentation/core-api/dma-api.rst for details).
28 -----------------
37 The DMA-able address space is the lowest 16 MB of _physical_ memory.
45 allocate the memory during boot-up it's a good idea to also pass
52 -------------------
65 Channels chapter
66 --------
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/linux/arch/arm/mach-omap2/
H A Dvc.c1 // SPDX-License-Identifier: GPL-2.0-only
19 #include "prm-regbits-34xx.h"
20 #include "prm-regbits-44xx.h"
52 * struct omap_vc_channel_cfg - describe the cfg_channel bitfield
81 * On OMAP3+, all VC channels have the above default bitfield
101 * omap_vc_config_channel - configure VC channel to PMIC mappings
106 * - i2c slave address (SA)
107 * - voltage configuration address (RAV)
108 * - command configuration address (RAC) and enable bit (RACEN)
109 * - command values for ON, ONLP, RET and OFF (CMD)
[all …]
/linux/tools/net/ynl/
H A Dethtool.py2 # SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
17 Verify and convert command-line arguments to the ynl-compatible request.
20 valid_attrs.remove('header') # not user-provided
44 Pretty-prin
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/linux/drivers/net/ethernet/mellanox/mlx5/core/en/
H A Dhtb.c1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
16 u32 classid; /* 16-bit, except root. */
39 hash_for_each(htb->qos_tc2node, bkt, node, hnode) { in mlx5e_htb_enumerate_leaves()
40 if (node->qid == MLX5E_QOS_QID_INNER) in mlx5e_htb_enumerate_leaves()
42 err = callback(data, node->qid, node->hw_id); in mlx5e_htb_enumerate_leaves()
53 last = find_last_bit(htb->qos_used_qids, mlx5e_qos_max_leaf_nodes(htb->mdev)); in mlx5e_htb_cur_leaf_nodes()
54 return last == mlx5e_qos_max_leaf_nodes(htb->mdev) ? 0 : last + 1; in mlx5e_htb_cur_leaf_nodes()
59 int size = mlx5e_qos_max_leaf_nodes(htb->mdev); in mlx5e_htb_find_unused_qos_qid()
60 struct mlx5e_priv *priv = htb->priv; in mlx5e_htb_find_unused_qos_qid()
63 WARN_ONCE(!mutex_is_locked(&priv->state_lock), "%s: state_lock is not held\n", __func__); in mlx5e_htb_find_unused_qos_qid()
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/linux/drivers/edac/
H A De7xxx_edac.c11 * http://www.anime.net/~goemon/linux-ecc/
14 …* http://www.intel.com/content/www/us/en/chipsets/e7501-chipset-memory-controller-hub-datasheet.ht…
76 #define E7XXX_NR_DIMMS 8 /* 2 channels, 4 dimms/channel */
78 /* E7XXX register addresses - device 0 function 0 */
93 * 22 Number channels 0=1,1=2
100 /* E7XXX register addresses - device 0 function 1 */
165 /* FIXME - is this valid for both SECDED and S4ECD4ED? */
186 struct e7xxx_pvt *pvt = (struct e7xxx_pvt *)mci->pvt_info; in ctl_page_to_phys()
190 if ((page < pvt->tolm) || in ctl_page_to_phys()
191 ((page >= 0x100000) && (page < pvt->remapbase))) in ctl_page_to_phys()
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/linux/Documentation/devicetree/bindings/iio/adc/
H A Dadi,ad4695.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <Michael.Hennerich@analog.com>
11 - Nuno Sá <nuno.sa@analog.com>
14 A family of similar multi-channel analog to digital converters with SPI bus.
21 $ref: /schemas/spi/spi-peripheral-props.yaml#
26 - adi,ad4695
27 - adi,ad4696
28 - adi,ad4697
[all …]
/linux/arch/arm/boot/dts/cirrus/
H A Dep93xx-edb9302.dts1 // SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
5 /dts-v1/;
9 #address-cells = <1>;
10 #size-cells = <1>;
27 compatible = "audio-graph-card2";
33 compatible = "gpio-leds";
34 led-0 {
37 linux,default-trigger = "heartbeat";
41 led-1 {
55 compatible = "cfi-flash";
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/linux/sound/soc/tegra/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "SoC Audio for the Tegra System-on-Chip"
74 The DMIC controller implements a converter to convert PDM signals
83 Config to enable the Inter-IC Sound (I2S) Controller which
84 implements full-duplex and bidirectional and single direction
85 point-to-point serial interfaces. It can interface with I2S
95 channels.
114 converts the multi-bit Pulse Code Modulation (PCM) audio input to
115 oversampled 1-bit Pulse Density Modulation (PDM) output. From the
117 that up-samples the input to the desired sampling rate by
[all …]
/linux/drivers/iio/adc/
H A Dti-adc12138.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * ADC12130/ADC12132/ADC12138 12-bit plus sign ADC driver
53 * Less may be need if not all channels are enabled, as long as
132 .tx_buf = adc->tx_buf, in adc12138_mode_programming()
133 .rx_buf = adc->rx_buf, in adc12138_mode_programming()
139 if (adc->id != adc12138) in adc12138_mode_programming()
142 adc->tx_buf[0] = mode; in adc12138_mode_programming()
144 ret = spi_sync_transfer(adc->spi, &xfer, 1); in adc12138_mode_programming()
148 memcpy(rx_buf, adc->rx_buf, len); in adc12138_mode_programming()
172 u8 mode = (ch_to_mux[channel->channel] << 4) | in __adc12138_start_conv()
[all …]
H A Dti-adc0832.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * ADC0831/ADC0832/ADC0834/ADC0838 8-bit ADC driver
7 * Datasheet: https://www.ti.com/lit/ds/symlink/adc0832-n.pdf
34 * May be shorter if not all channels are enabled subject
122 struct spi_device *spi = adc->spi; in adc0831_adc_conversion()
125 ret = spi_read(spi, &adc->rx_buf, 2); in adc0831_adc_conversion()
130 * Skip TRI-STATE and a leading zero in adc0831_adc_conversion()
132 return (adc->rx_buf[0] << 2 & 0xff) | (adc->rx_buf[1] >> 6); in adc0831_adc_conversion()
138 struct spi_device *spi = adc->spi; in adc0832_adc_conversion()
140 .tx_buf = adc->tx_buf, in adc0832_adc_conversion()
[all …]
/linux/sound/core/
H A Dpcm_drm_eld.c1 // SPDX-License-Identifier: GPL-2.0-only
13 #define SAD0_CHANNELS_MASK GENMASK(2, 0) /* max number of channels - 1 */
96 struct snd_interval *r = hw_param_interval(params, rule->var); in eld_limit_rates()
99 const u8 *sad, *eld = rule->private; in eld_limit_rates()
105 for (i = drm_eld_sad_count(eld); i > 0; i--, sad += 3) { in eld_limit_rates()
110 * requested number of channels. in eld_limit_rates()
112 if (c->min <= max_channels) in eld_limit_rates()
124 struct snd_interval *c = hw_param_interval(params, rule->var); in eld_limit_channels()
128 const u8 *sad, *eld = rule->private; in eld_limit_channels()
134 /* Convert the rate interval to a mask */ in eld_limit_channels()
[all …]
/linux/drivers/input/touchscreen/
H A Dresistive-adc-touch.c1 // SPDX-License-Identifier: GPL-2.0
5 * given the channels in device tree, and reports events to the input
21 #define DRIVER_NAME "resistive-adc-touch"
37 * struct grts_state - generic resistive touch screen information struct
41 * @iio_chans: list of channels acquired
45 * @ch_map: map of channels that are defined for the touchscreen
64 x = touch_info[st->ch_map[GRTS_CH_X]]; in grts_cb()
65 y = touch_info[st->ch_map[GRTS_CH_Y]]; in grts_cb()
67 if (st->ch_map[GRTS_CH_PRESSURE] < GRTS_MAX_CHANNELS) { in grts_cb()
68 press = touch_info[st->ch_map[GRTS_CH_PRESSURE]]; in grts_cb()
[all …]
/linux/Documentation/devicetree/bindings/net/
H A Dcpsw.txt2 ------------------------------------------------------
5 - compatible : Should be one of the below:-
7 "ti,am335x-cpsw" for AM335x controllers
8 "ti,am4372-cpsw" for AM437x controllers
9 "ti,dra7-cpsw" for DRA7x controllers
10 - reg : physical base address and size of the cpsw
12 - interrupts : property with a value describing the interrupt
14 - cpdma_channels : Specifies number of channels in CPDMA
15 - ale_entries : Specifies No of entries ALE can hold
16 - bd_ram_size : Specifies internal descriptor RAM size
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