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/linux/drivers/iio/adc/
H A Dad7380.c1 // SPDX-License-Identifier: GPL-2.0-only
9 * ad7380/1 : https://www.analog.com/media/en/technical-documentation/data-sheets/AD7380-7381.pdf
10 * ad7383/4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7383-7384.pdf
11 …* ad7386/7/8 : https://www.analog.com/media/en/technical-documentation/data-sheets/AD7386-7387-738…
12 * ad7380-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7380-4.pdf
13 * ad7381-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7381-4.pdf
14 …* ad7383/4-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7383-4-ad7384…
15 …* ad7386/7/8-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7386-4-7387…
16 * ad7389-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7389-4.pdf
17 * adaq4370-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4370-4.pdf
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H A Dad4030.c1 // SPDX-License-Identifier: GPL-2.0-only
109 #define AD4030_TCYC_ADJUSTED_NS (AD4030_TCYC_NS - AD4030_TCNVL_NS)
112 #define AD4632_TCYC_ADJUSTED_NS (AD4632_TCYC_NS - AD4030_TCNVL_NS)
138 const struct iio_chan_spec channels[AD4030_MAX_IIO_CHANNEL_NB]; member
141 /* Number of hardware channels */
165 s32 diff; member
169 s32 diff[2]; member
176 * For a chip with 2 hardware channel this will be used to create 2 common-mode
177 * channels:
178 * - voltage4
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H A Dad4170-4.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Analog Devices AD4170-4 ADC driver
6 * Author: Ana-Maria Cusco <ana-maria.cusco@analog.com>
17 #include <linux/clk-provider.h>
81 /* AD4170_CONFIG_A_REG - INTERFACE_CONFIG_A REGISTER */
246 [AD4170_CHAN_SETUP_REG(0) ... AD4170_CHAN_MAP_REG(AD4170_MAX_ADC_CHANNELS - 1)] = 2,
249 * also interleaved but MISC, AFE, FILTER, FILTER_FS, OFFSET are 16-bit
250 * while OFFSET, GAIN are 24-bit registers so we can't init them all to
278 AD4170_REF_BUF_PRE, /* Pre-charge referrence buffer */
283 /* maps adi,positive/negative-reference-buffer property values to enum */
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H A Dmax11410.c1 // SPDX-License-Identifier: GPL-2.0-only
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()
206 return st->vrefp[refsel]; in max11410_get_vrefp()
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/linux/Documentation/devicetree/bindings/iio/adc/
H A Dti,ads1119.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - João Paulo Gonçalves <jpaulo.silvagoncalves@gmail.com>
13 The TI ADS1119 is a precision 16-bit ADC over I2C that offers single-ended and
28 reset-gpios:
31 avdd-supply: true
32 dvdd-supply: true
34 vref-supply:
38 "#address-cells":
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H A Dadi,ad4130.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Cosmin Tanislav <cosmin.tanislav@analog.com>
15 https://www.analog.com/media/en/technical-documentation/data-sheets/AD4130-8.pdf
20 - adi,ad4130
29 clock-names:
31 - const: mclk
36 interrupt-names:
42 - int
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H A Dadi,ad4170-4.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/adi,ad4170-4.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices AD4170-4 and similar Analog to Digital Converters
10 - Marcelo Schmitt <marcelo.schmitt@analog.com>
13 Analog Devices AD4170-4 series of Sigma-delta Analog to Digital Converters.
15 https://www.analog.com/media/en/technical-documentation/data-sheets/ad4170-4.pdf
16 https://www.analog.com/media/en/technical-documentation/data-sheets/ad4190-4.pdf
17 https://www.analog.com/media/en/technical-documentation/data-sheets/ad4195-4.pdf
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H A Dmicrochip,mcp3564.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Marius Cristea <marius.cristea@microchip.com>
13 Bindings for the Microchip family of 153.6 ksps, Low-Noise 16/24-Bit
14 Delta-Sigma ADCs with an SPI interface. Datasheet can be found here:
16 …s/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP3561-2-4-Family-Data-Sheet-DS20006181…
18 …ds/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP3561_2_4R-Data-Sheet-DS200006391C.pdf
20 …ProductDocuments/DataSheets/MCP3461-2-4-Two-Four-Eight-Channel-153.6-ksps-Low-Noise-16-Bit-Delta-S…
22 …/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP3461-2-4R-Family-Data-Sheet-DS20006404…
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H A Dadi,max11410.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Ibrahim Tilki <Ibrahim.Tilki@analog.com>
21 - adi,max11410
30 interrupt-names:
34 - enum: [gpio0, gpio1]
35 - const: gpio1
37 '#address-cells':
40 '#size-cells':
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H A Dadi,ad4851.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Sergiu Cuciurean <sergiu.cuciurean@analog.com>
12 - Dragos Bogdan <dragos.bogdan@analog.com>
13 - Antoniu Miclaus <antoniu.miclaus@analog.com>
16 Analog Devices AD485X fully buffered, 8-channel simultaneous sampling,
17 16/20-bit, 1 MSPS data acquisition system (DAS) with differential, wide
18 common-mode range inputs.
20 https://www.analog.com/media/en/technical-documentation/data-sheets/ad4855.pdf
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H A Dadi,ad7292.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
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:
31 spi-cpha: true
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/linux/sound/core/
H A Dpcm_lib.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Abramo Bagnara <abramo@alsa-project.org>
43 delta = new_ptr - ptr; in update_silence_vars()
47 delta += runtime->boundary; in update_silence_vars()
48 if ((snd_pcm_uframes_t)delta < runtime->silence_filled) in update_silence_vars()
49 runtime->silence_filled -= delta; in update_silence_vars()
51 runtime->silence_filled = 0; in update_silence_vars()
52 runtime->silence_start = new_ptr; in update_silence_vars()
57 * runtime->silence_start: starting pointer to silence area
58 * runtime->silence_filled: size filled with silence
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/linux/arch/arm64/boot/dts/ti/
H A Dk3-am62p-verdin-ivy.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62p
8 * https://www.toradex.com/products/carrier-board/ivy-carrier-board
11 #include <dt-bindings/mux/mux.h>
12 #include <dt-bindings/leds/common.h>
13 #include <dt-bindings/net/ti-dp83867.h>
21 ain1_voltage_unmanaged: voltage-divider-ain1 {
22 compatible = "voltage-divider";
23 #io-channel-cells = <1>;
24 io-channels = <&ivy_adc1 0>;
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H A Dk3-am62-verdin-ivy.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62
8 * https://www.toradex.com/products/carrier-board/ivy-carrier-board
11 #include <dt-bindings/mux/mux.h>
12 #include <dt-bindings/leds/common.h>
13 #include <dt-bindings/net/ti-dp83867.h>
17 ain1_voltage_unmanaged: voltage-divider-ain1 {
18 compatible = "voltage-divider";
19 #io-channel-cells = <1>;
20 io-channels = <&ivy_adc1 0>;
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/linux/tools/testing/selftests/alsa/
H A Dpcm-test.c1 // SPDX-License-Identifier: GPL-2.0
21 #include "alsa-local.h"
69 timestamp_t now, diff; in timestamp_diff_ms() local
71 if (tstamp->tv_nsec > now.tv_nsec) { in timestamp_diff_ms()
72 diff.tv_sec = now.tv_sec - tstamp->tv_sec - 1; in timestamp_diff_ms()
73 diff.tv_nsec = (now.tv_nsec + 1000000000L) - tstamp->tv_nsec; in timestamp_diff_ms()
75 diff.tv_sec = now.tv_sec - tstamp->tv_sec; in timestamp_diff_ms()
76 diff.tv_nsec = now.tv_nsec - tstamp->tv_nsec; in timestamp_diff_ms()
78 return (diff.tv_sec * 1000) + ((diff.tv_nsec + 500000L) / 1000000L); in timestamp_diff_ms()
92 return -1; in device_from_id()
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/linux/Documentation/devicetree/bindings/iio/proximity/
H A Dtyhx,hx9023s.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Yasin Lee <yasin.lee.x@gmail.com>
29 vdd-supply: true
31 "#address-cells":
34 "#size-cells":
38 "^channel@[0-4]$":
50 - compatible
51 - reg
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/linux/drivers/dma/
H A Ddmatest.c1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <linux/dma-mapping.h>
44 "Maximum number of channels to use (default: all)");
54 "dmatest 0-memcpy 1-memset (default: 0)");
69 "Pass -1 for infinite timeout");
83 static int alignment = -1;
85 …M_DESC(alignment, "Custom data address alignment taken as 2^(alignment) (default: not used (-1))");
96 * struct dmatest_params - test parameters.
102 * @max_channels: maximum number of channels to use
106 * @timeout: transfer timeout in msec, -1 for infinite timeout
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/linux/net/rxrpc/
H A Dconn_client.c1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Client connection-specific management code.
13 * (2) DONT_REUSE - The connection should be discarded as soon as possible and
31 #include "ar-internal.h"
39 atomic_inc(&bundle->active); in rxrpc_activate_bundle()
48 idr_remove(&local->conn_ids, conn->proto.cid >> RXRPC_CIDSHIFT); in rxrpc_put_client_connection_id()
59 if (!idr_is_empty(&local->conn_ids)) { in rxrpc_destroy_client_conn_ids()
60 idr_for_each_entry(&local->conn_ids, conn, id) { in rxrpc_destroy_client_conn_ids()
62 conn, refcount_read(&conn->ref)); in rxrpc_destroy_client_conn_ids()
67 idr_destroy(&local->conn_ids); in rxrpc_destroy_client_conn_ids()
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/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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/linux/sound/soc/fsl/
H A Dlpc3xxx-i2s.c1 // SPDX-License-Identifier: GPL-2.0-or-later
23 #include "lpc3xxx-i2s.h"
42 u32 diff, trate, baseclk; in __lpc3xxx_find_clkdiv() local
44 /* Adjust rate for sample size (bits) and 2 channels and offset for in __lpc3xxx_find_clkdiv()
56 diff = ~0; in __lpc3xxx_find_clkdiv()
60 if (abs(trate - i2srate) < diff) { in __lpc3xxx_find_clkdiv()
61 diff = abs(trate - i2srate); in __lpc3xxx_find_clkdiv()
72 struct device *dev = i2s_info_p->dev; in lpc3xxx_i2s_startup()
76 guard(mutex)(&i2s_info_p->lock); in lpc3xxx_i2s_startup()
78 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) in lpc3xxx_i2s_startup()
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/linux/drivers/leds/flash/
H A Dleds-tps6131x.c1 // SPDX-License-Identifier: GPL-2.0-or-later
10 #include <linux/led-class-flash.h>
14 #include <media/v4l2-flash-led-clas
213 u32 diff, min_diff = U32_MAX; tps6131x_find_closest_timer_config() local
536 u32 channels[TPS6131X_MAX_CHANNELS]; tps6131x_parse_node() local
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/linux/drivers/gpu/drm/renesas/rcar-du/
H A Drcar_du_crtc.c1 // SPDX-License-Identifier: GPL-2.0+
3 * R-Car Display Unit CRTCs
5 * Copyright (C) 2013-2015 Renesas Electronics Corporation
36 struct rcar_du_device *rcdu = rcrtc->dev; in rcar_du_crtc_read()
38 return rcar_du_read(rcdu, rcrtc->mmio_offset + reg); in rcar_du_crtc_read()
43 struct rcar_du_device *rcdu = rcrtc->dev; in rcar_du_crtc_write()
45 rcar_du_write(rcdu, rcrtc->mmio_offset + reg, data); in rcar_du_crtc_write()
50 struct rcar_du_device *rcdu = rcrtc->de in rcar_du_crtc_clr()
88 unsigned long diff; rcar_du_dpll_divider() local
168 unsigned long diff; global() member
176 unsigned long diff; rcar_du_escr_divider() local
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/linux/sound/usb/usx2y/
H A Dusbusx2y.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * usbusx2y.c - ALSA USB US-428 Driver
5 2005-04-14 Karsten Wiese
8 Tested ok with kernel 2.6.12-rc2.
10 2004-12-14 Karsten Wiese
12 …snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called without rawusb's hwdep device bei…
14 2004-12-02 Karsten Wiese
18 2004-10-26 Karsten Wiese
22 2004-10-21 Karsten Wiese
26 2004-10-03 Karsten Wiese
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/linux/drivers/comedi/drivers/
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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/linux/drivers/input/keyboard/
H A Dsun4i-lradc-keys.c1 // SPDX-License-Identifier: GPL-2.0-or-later
13 * There are 2 channels, currently this driver only supports channel 0 since
62 /* struct lradc_variant - Describe sun4i-a10-lradc-keys hardware variant
111 u32 i, ints, val, voltage, diff, keycode = 0, closest = 0xffffffff; in sun4i_lradc_irq() local
113 ints = readl(lradc->base + LRADC_INTS); in sun4i_lradc_irq()
121 input_report_key(lradc->input, lradc->chan0_keycode, 0); in sun4i_lradc_irq()
122 lradc->chan0_keycode = 0; in sun4i_lradc_irq()
125 if ((ints & CHAN0_KEYDOWN_IRQ) && lradc->chan0_keycode == 0) { in sun4i_lradc_irq()
126 val = readl(lradc->base + LRADC_DATA0) & 0x3f; in sun4i_lradc_irq()
127 voltage = val * lradc->vref / 63; in sun4i_lradc_irq()
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