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/openbmc/linux/Documentation/devicetree/bindings/iio/adc/
H A Dadi,ad7124.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/iio/adc/adi,ad7124.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Analog Devices AD7124 ADC device driver
11 - Stefan Popa <stefan.popa@analog.com>
14 Bindings for the Analog Devices AD7124 ADC device. Datasheet can be
16 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-8.pdf
21 - adi,ad7124-4
22 - adi,ad7124-8
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H A Dst,stm32-adc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/st,stm32-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectronics STM32 ADC
10 STM32 ADC is a successive approximation analog-to-digital converter.
11 It has several multiplexed input channels. Conversions can be performed
12 in single, continuous, scan or discontinuous mode. Result of the ADC is
13 stored in a left-aligned or right-aligned 32-bit data register.
17 voltage goes beyond the user-defined, higher or lower thresholds.
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H A Dadi,ad4130.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/iio/adc/adi,ad4130.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Analog Devices AD4130 ADC device driver
11 - Cosmin Tanislav <cosmin.tanislav@analog.com>
14 Bindings for the Analog Devices AD4130 ADC. Datasheet can be found here:
15 https://www.analog.com/media/en/technical-documentation/data-sheets/AD4130-8.pdf
20 - adi,ad4130
29 clock-names:
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H A Dadi,ad7292.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/adi,ad7292.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices AD7292 10-Bit Monitor and Control System
10 - Marcelo Schmitt <marcelo.schmitt1@gmail.com>
13 Analog Devices AD7292 10-Bit Monitor and Control System with ADC, DACs,
17 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7292.pdf
22 - adi,ad7292
27 vref-supply:
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H A Dadi,max11410.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/iio/adc/adi,max11410.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Analog Devices MAX11410 ADC device driver
11 - Ibrahim Tilki <Ibrahim.Tilki@analog.com>
14 Bindings for the Analog Devices MAX11410 ADC device. Datasheet can be
21 - adi,max11410
30 interrupt-names:
34 - enum: [gpio0, gpio1]
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H A Dadc.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: IIO Common Properties for ADC Channels
10 - Jonathan Cameron <jic23@kernel.org>
13 A few properties are defined in a common way ADC channels.
17 pattern: "^channel(@[0-9a-f]+)?$"
32 diff-channels:
33 $ref: /schemas/types.yaml#/definitions/uint32-array
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/openbmc/u-boot/doc/device-tree-bindings/adc/
H A Dst,stm32-adc.txt1 STMicroelectronics STM32 ADC device
3 STM32 ADC is a successive approximation analog-to-digital converter.
4 It has several multiplexed input channels. Conversions can be performed
5 in single, continuous, scan or discontinuous mode. Result of the ADC is
6 stored in a left-aligned or right-aligned 32-bit data register.
10 voltage goes beyond the user-defined, higher or lower thresholds.
12 Each STM32 ADC block can have up to 3 ADC instances.
16 - regular conversion can be done in sequence, running in background
17 - injected conversions have higher priority, and so have the ability to
21 Contents of a stm32 adc root node:
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/openbmc/linux/drivers/iio/adc/
H A Dstm32-adc.c1 // SPDX-License-Identifier: GPL-2.0
3 * This file is part of STM32 ADC driver
5 * Copyright (C) 2016, STMicroelectronics - All Rights Reserved
12 #include <linux/dma-mapping.h>
16 #include <linux/iio/timer/stm32-lptim-trigger.h>
17 #include <linux/iio/timer/stm32-timer-trigger.h>
26 #include <linux/nvmem-consumer.h>
31 #include "stm32-adc-core.h"
36 /* BOOST bit must be set on STM32H7 when ADC clock is above 20MHz */
39 #define STM32_ADC_CH_MAX 20 /* max number of channels */
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H A Dad7292.c1 // SPDX-License-Identifier: GPL-2.0
3 * Analog Devices AD7292 SPI ADC driver
92 st->d8[0] = AD7292_RD_FLAG_MSK(addr); in ad7292_spi_reg_read()
94 ret = spi_write_then_read(st->spi, st->d8, 1, &st->d16, 2); in ad7292_spi_reg_read()
98 return be16_to_cpu(st->d16); in ad7292_spi_reg_read()
104 unsigned int shift = 16 - (8 * len); in ad7292_spi_subreg_read()
107 st->d8[0] = AD7292_RD_FLAG_MSK(addr); in ad7292_spi_subreg_read()
108 st->d8[1] = sub_addr; in ad7292_spi_subreg_read()
110 ret = spi_write_then_read(st->spi, st->d8, 2, &st->d16, len); in ad7292_spi_subreg_read()
114 return (be16_to_cpu(st->d16) >> shift); in ad7292_spi_subreg_read()
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H A Dmax11410.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * MAX11410 SPI ADC driver
142 struct max11410_channel_config *channels; member
175 /* This driver only needs to write 8-bit registers */ in max11410_write_reg()
177 return -EINVAL; in max11410_write_reg()
179 return regmap_write(st->regmap, reg, val); in max11410_write_reg()
188 ret = regmap_bulk_read(st->regmap, reg, &st->scan.data, 3); in max11410_read_reg()
192 *val = get_unaligned_be24(&st->scan.data); in max11410_read_reg()
196 return regmap_read(st->regmap, reg, val); in max11410_read_reg()
204 return st->avdd; in max11410_get_vrefp()
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H A Dat91-sama5d2_adc.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Atmel ADC driver for SAMA5D2 devices and compatible.
14 #include <linux/dma-mapping.h>
31 #include <linux/nvmem-consumer.h>
36 #include <dt-bindings/iio/adc/at91-sama5d2_ad
905 int nbits, diff; at91_adc_adjust_val_osr() local
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H A Dad7124.c1 // SPDX-License-Identifier: GPL-2.0+
3 * AD7124 SPI ADC driver
23 #include <linux/iio/adc/ad_sigma_delta.h>
174 struct ad7124_channel *channels; member
203 .name = "ad7124-4",
208 .name = "ad7124-8",
224 diff_new = abs(val - array[i]); in ad7124_find_closest_match()
243 ret = ad_sd_read_reg(&st->sd, addr, bytes, &readval); in ad7124_spi_write_mask()
250 return ad_sd_write_reg(&st->sd, addr, bytes, readval); in ad7124_spi_write_mask()
258 st->adc_control &= ~AD7124_ADC_CTRL_MODE_MSK; in ad7124_set_mode()
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/openbmc/linux/sound/soc/codecs/
H A Dpcm186x.c1 // SPDX-License-Identifier: GPL-2.0
3 * Texas Instruments PCM186x Universal Audio ADC
5 * Copyright (C) 2015-2017 Texas Instruments Incorporated - https://www.ti.com
29 "avdd", /* Analog power supply. Connect to 3.3-V supply. */
30 "dvdd", /* Digital power supply. Connect to 3.3-V supply. */
31 "iovdd", /* I/O power supply. Connect to 3.3-V or 1.8-V. */
44 static const DECLARE_TLV_DB_SCALE(pcm186x_pga_tlv, -1200, 50, 0);
47 SOC_DOUBLE_R_S_TLV("ADC Capture Volume", PCM186X_PGA_VAL_CH1_L,
48 PCM186X_PGA_VAL_CH1_R, 0, -24, 80, 7, 0,
54 PCM186X_PGA_VAL_CH1_R, 0, -24, 80, 7, 0,
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H A Dwm8978.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * wm8978.c -- WM8978 ALSA SoC Audio Codec driver
5 * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
7 * Copyright 2006-2009 Wolfson Microelectronics PLC.
106 static const char *wm8978_companding[] = {"Off", "NC", "u-law", "A-law"};
133 static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
134 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
135 static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
136 static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
137 static const DECLARE_TLV_DB_SCALE(boost_tlv, -1500, 300, 1);
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H A Dad1836.c1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Copyright 2009-2011 Analog Devices Inc.
38 * AD1836 volume/mute/de-emphasis etc. controls
54 SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
94 { "ADC", NULL, "ADC1IN" },
95 { "ADC", NULL, "ADC2IN" },
99 /* ADC high-pass filter */
100 SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
103 /* DAC de-emphasis */
110 SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
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H A Dwm9712.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * wm9712.c -- ALSA Soc WM9712 codec support
5 * Copyright 2006-12 Wolfson Microelectronics PLC.
115 static const DECLARE_TLV_DB_SCALE(main_tlv, -3450, 150, 0);
181 SOC_SINGLE("3D Upper Cut-off Switch", AC97_3D_CONTROL, 5, 1, 1),
182 SOC_SINGLE("3D Lower Cut-off Switch", AC97_3D_CONTROL, 4, 1, 1),
186 SOC_SINGLE("Bass Cut-off Switch", AC97_MASTER_TONE, 12, 1, 1),
187 SOC_SINGLE("Tone Cut-off Switch", AC97_MASTER_TONE, 4, 1, 1),
188 SOC_SINGLE("Playback Attenuate (-6dB) Switch", AC97_MASTER_TONE, 6, 1, 0),
212 * the codec only has a single control that is shared by both channels.
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H A Dda7219.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * da7219.c - DA7219 ALSA SoC Codec Driver
13 #include <linux/clk-provider.h>
26 #include <sound/soc-dapm.h>
33 #include "da7219-aad.h"
41 static const DECLARE_TLV_DB_SCALE(da7219_mic_gain_tlv, -600, 600, 0);
42 static const DECLARE_TLV_DB_SCALE(da7219_mixin_gain_tlv, -450, 150, 0);
43 static const DECLARE_TLV_DB_SCALE(da7219_adc_dig_gain_tlv, -8325, 75, 0);
44 static const DECLARE_TLV_DB_SCALE(da7219_alc_threshold_tlv, -9450, 150, 0);
47 static const DECLARE_TLV_DB_SCALE(da7219_sidetone_gain_tlv, -4200, 300, 0);
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/openbmc/linux/Documentation/devicetree/bindings/mux/
H A Dadi,adg792a.txt4 - compatible : "adi,adg792a" or "adi,adg792g"
5 - #mux-control-cells : <0> if parallel (the three muxes are bound together
8 * Standard mux-controller bindings as described in mux-controller.yaml
11 - gpio-controller : if present, #gpio-cells below is required.
12 - #gpio-cells : should be <2>
13 - First cell is the GPO line number, i.e. 0 or 1
14 - Second cell is used to specify active high (0)
18 - idle-state : if present, array of states that the mux controllers will have
32 mux: mux-controller@50 {
35 #mux-control-cells = <1>;
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/openbmc/linux/drivers/iio/addac/
H A Dstx104.c1 // SPDX-License-Identifier: GPL-2.0-only
29 #define STX104_IN_CHAN(chan, diff) { \ argument
37 .differential = diff \
62 /* ADC Channel */
68 /* ADC Status */
73 /* ADC Control */
77 /* ADC Configuration */
87 * struct stx104_iio - IIO device private data structure
182 err = regmap_read(priv->aio_ctl_map, STX104_ADC_CONFIGURATION, &adc_config); in stx104_read_raw()
189 if (chan->output) { in stx104_read_raw()
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/openbmc/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.
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H A Damplc_pci230.c1 // SPDX-License-Identifier: GPL-2.0+
8 * COMEDI - Linux Control and Measurement Device Interface
35 * --------- ---------
43 * The AI subdevice has 16 single-ended channels or 8 differential
44 * channels.
46 * The PCI230 and PCI260 cards have 12-bit resolution. The PCI230+ and
47 * PCI260+ cards have 16-bit resolution.
51 * or PCI260 then it actually uses a "pseudo-differential" mode where the
62 * 0 => [-10, +10] V
63 * 1 => [-5, +5] V
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H A Dusbduxsigma.c1 // SPDX-License-Identifier: GPL-2.0+
4 * Copyright (C) 2011-2015 Bernd Porr, mail@berndporr.me.uk
10 * Devices: [ITL] USB-DUX-SIGMA (usbduxsigma)
18 * wrote the driver for AT-MIO-16d. I used some parts of this
33 * 0.7: rewrite code that urb->interval is always 1
45 /* timeout for the USB-transfer in ms*/
64 /* Number of channels (16 AD and offset)*/
71 * Size of the async input-buffer IN BYTES, the DIO state is transmitted
79 /* Number of DA channels */
86 * Size of the output-buffer in bytes
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/openbmc/qemu/hw/audio/
H A Dwm8750.c24 int adc; member
53 uint8_t diff[2], pol, ds, monomix[2], alc, mute; member
60 /* pow(10.0, -i / 20.0) * 255, i = 0..42 */
67 #define WM8750_OUTVOL_TRANSFORM(x) wm8750_vol_db_table[(0x7f - x) / 3]
72 if (s->idx_in + s->req_in <= sizeof(s->data_in)) in wm8750_in_load()
74 s->idx_in = MAX(0, (int) sizeof(s->data_in) - s->req_in); in wm8750_in_load()
75 AUD_read(*s->in[0], s->data_in + s->idx_in, in wm8750_in_load()
76 sizeof(s->data_in) - s->idx_in); in wm8750_in_load()
82 while (sent < s->idx_out) in wm8750_out_flush()
83 sent += AUD_write(*s->out[0], s->data_out + sent, s->idx_out - sent) in wm8750_out_flush()
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/openbmc/linux/drivers/input/keyboard/
H A Dsun4i-lradc-keys.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Allwinner sun4i low res adc attached tablet keys driver
13 * There are 2 channels, currently this driver only supports channel 0 since
63 /* struct lradc_variant - Describe sun4i-a10-lradc-keys hardware variant
112 u32 i, ints, val, voltage, diff, keycode = 0, closest = 0xffffffff; in sun4i_lradc_irq() local
114 ints = readl(lradc->base + LRADC_INTS); in sun4i_lradc_irq()
122 input_report_key(lradc->input, lradc->chan0_keycode, 0); in sun4i_lradc_irq()
123 lradc->chan0_keycode = 0; in sun4i_lradc_irq()
126 if ((ints & CHAN0_KEYDOWN_IRQ) && lradc->chan0_keycode == 0) { in sun4i_lradc_irq()
127 val = readl(lradc->base + LRADC_DATA0) & 0x3f; in sun4i_lradc_irq()
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/openbmc/linux/sound/pci/
H A Des1938.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for ESS Solo-1 (ES1938, ES1946, ES1969) soundcard
7 * Abramo Bagnara <abramo@alsa-project.org>,
18 - Capture data is written unaligned starting from dma_base + 1 so I need to
20 - After several cycle of the following:
21 while : ; do arecord -d1 -f cd -t raw | aplay -f cd ; done
25 - Sometimes the interrupt handler is invoked wrongly during playback.
31 hdparm -t -T /dev/hda
42 #include <linux/dma-mapping.h>
53 MODULE_DESCRIPTION("ESS Solo-1");
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