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/linux/drivers/iio/dac/
H A Dad3552r-common.c1 // SPDX-License-Identifier: GPL-2.0+
3 // Copyright (c) 2010-2024 Analog Devices Inc.
18 [AD3552R_CH_OUTPUT_RANGE_NEG_5__5V] = { -5000, 5000 },
19 [AD3552R_CH_OUTPUT_RANGE_NEG_10__10V] = { -10000, 10000 }
27 [AD3542R_CH_OUTPUT_RANGE_NEG_5__5V] = { -5000, 5000 },
28 [AD3542R_CH_OUTPUT_RANGE_NEG_2P5__7P5V] = { -2500, 7500 }
32 /* Gain * AD3552R_GAIN_SCALE */
40 u16 ad3552r_calc_custom_gain(u8 p, u8 n, s16 goffs) in ad3552r_calc_custom_gain() argument
43 FIELD_PREP(AD3552R_MASK_CH_GAIN_SCALING_P, p) | in ad3552r_calc_custom_gain()
57 * Vmax = 2.5 - [(GainP + Offset / 1024) * 2.5 * Rfb * 1.03] in ad3552r_get_custom_range()
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/linux/drivers/media/i2c/
H A Dsaa711x_regs.h1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * saa711x - Philips SAA711x video decoder register specifications
10 /* Video Decoder - Frontend part */
16 /* Video Decoder - Decoder part */
112 /* Horizontal phase scaling */
120 /* Vertical scaling */
159 /* Horizontal phase scaling */
166 /* Vertical scaling */
196 /* SAA7113 bit-masks */
230 /* Video Decoder - Frontend part: R_01_INC_DELAY to R_05_INPUT_CNTL_4 */
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H A Dsaa7115.c1 // SPDX-License-Identifier: GPL-2.0+
2 // saa711x - Philips SAA711x video decoder driver
23 // Copyright (c) 2005-2006 Mauro Carvalho Chehab <mchehab@kernel.org>
33 #include <media/v4l2-device.h>
34 #include <media/v4l2-ctrls.h>
35 #include <media/v4l2-mc.h>
49 MODULE_PARM_DESC(debug, "Debug level (0-1)");
76 /* chroma gain control cluster */
78 struct v4l2_ctrl *gain; member
104 return &container_of(ctrl->handler, struct saa711x_state, hdl)->sd; in to_sd()
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H A Dsaa717x.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * saa717x - Philips SAA717xHL video decoder driver
8 * - Apply to SAA717x,NEC uPD64031,uPD64083. (1/31/2004)
10 * Changes by T.Adachi (tadachi@tadachi-net.com)
11 * - support audio, video scaler etc, and checked the initialize sequence.
27 #include <media/v4l2-device.h>
28 #include <media/v4l2-ctrls.h>
36 MODULE_PARM_DESC(debug, "Debug level (0-1)");
70 return &container_of(ctrl->handler, struct saa717x_state, hdl)->sd; in to_sd()
73 /* ----------------------------------------------------------------------- */
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H A Ds5k5baf.c1 // SPDX-License-Identifier: GPL-2.0-only
24 #include <media/media-entity.h>
25 #include <media/v4l2-ctrls.h>
26 #include <media/v4l2-device.h>
27 #include <media/v4l2-subdev.h>
28 #include <media/v4l2-mediabus.h>
29 #include <media/v4l2-fwnode.h>
38 #define S5K5BAF_FW_FILENAME "s5k5baf-cfg.bin"
50 /* Default number of MIPI CSI-2 data lanes used */
199 /* Auto-algorithms enable mask */
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H A Dmt9m114.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (c) 2020-2023 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
26 #include <media/v4l2-async.h>
27 #include <media/v4l2-cci.h>
28 #include <media/v4l2-ctrls.h>
29 #include <media/v4l2-device.h>
30 #include <media/v4l2-fwnode.h>
31 #include <media/v4l2-mediabus.h>
32 #include <media/v4l2-subdev.h>
75 /* Auto-Exposure Track registers */
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H A Dadv7842.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * adv7842 - Analog Devices ADV7842 video decoder driver
9 * References (c = chapter, p = page):
10 * REF_01 - Analog devices, ADV7842,
12 * REF_02 - Analog devices, Software User Guide, UG-206,
14 * REF_03 - Analog devices, Hardware User Guide, UG-214,
15 * ADV7842 Fast Switching 2:1 HDMI 1.4 Receiver with 3D-Comb
27 #include <linux/v4l2-dv-timings.h>
30 #include <media/v4l2-device.h>
31 #include <media/v4l2-event.h>
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/linux/Documentation/userspace-api/media/v4l/
H A Dvidioc-queryctrl.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_QUERYCTRL - VIDIOC_QUERY_EXT_CTRL - VIDIOC_QUERYMENU - Enumerate controls and menu control i…
42 of a struct :ref:`v4l2_queryctrl <v4l2-queryctrl>` and call the
60 driver returns the next supported non-compound control, or ``EINVAL`` if
72 :ref:`v4l2_queryctrl <v4l2-queryctrl>` since that structure is full.
80 fields of struct :ref:`v4l2_querymenu <v4l2-querymenu>` and call the
85 :ref:`v4l2_queryctrl <v4l2-queryctrl>` ``minimum`` to ``maximum``,
97 .. tabularcolumns:: |p{1.2cm}|p{3.6cm}|p{12.5cm}|
99 .. _v4l2-queryctrl:
103 .. flat-table:: struct v4l2_queryctrl
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/linux/drivers/misc/echo/
H A Decho.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * SpanDSP - a series of DSP components for telephony
5 * echo.c - A line echo canceller. This code is being developed
30 especially for double talk - there were always cases where my DTD
50 on 4 real-world samples.
54 on the real-world samples. I have no idea why, perhaps a scaling
59 dot product) compared to the current sample-by-sample update.
66 Path Models", IEEE Transactions on communications, COM-25,
78 Part 1: http://www.rowetel.com/blog/?p=18
87 Thanks to Steve Underwood, Jean-Marc Valin, and Ramakrishnan
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/linux/drivers/media/test-drivers/vivid/
H A Dvivid-kthread-cap.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * vivid-kthread-cap.h - video/vbi capture thread support functions.
20 #include <linux/v4l2-dv-timings.h>
23 #include <media/videobuf2-vmalloc.h>
24 #include <media/v4l2-dv-timings.h>
25 #include <media/v4l2-ioctl.h>
26 #include <media/v4l2-fh.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-rect.h>
30 #include "vivid-core.h"
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/linux/drivers/media/v4l2-core/
H A Dv4l2-ctrls-defs.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2010-2021 Hans Verkuil <hverkuil-cisco@xs4all.nl>
9 #include <media/v4l2-ctrls.h>
26 "MPEG-1/2 Layer I", in v4l2_ctrl_get_menu()
27 "MPEG-1/2 Layer II", in v4l2_ctrl_get_menu()
28 "MPEG-1/2 Layer III", in v4l2_ctrl_get_menu()
29 "MPEG-2/4 AAC", in v4l2_ctrl_get_menu()
30 "AC-3", in v4l2_ctrl_get_menu()
128 "16-bit CRC", in v4l2_ctrl_get_menu()
141 "MPEG-1", in v4l2_ctrl_get_menu()
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/linux/Documentation/driver-api/media/drivers/ccs/
H A Dccs-regs.asc1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause
2 # Copyright (C) 2019--2020 Intel Corporation
5 # - f field LSB MSB rflags
6 # - e enum value # after a field
7 # - e enum value [LSB MSB]
8 # - b bool bit
9 # - l arg name min max elsize [discontig...]
23 - e GRBG 0
24 - e RGGB 1
25 - e BGGR 2
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/linux/drivers/media/common/saa7146/
H A Dsaa7146_hlp.c1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <media/drv-intf/saa7146_vv.h>
26 hyo = vv->standard->v_offset; in calculate_hxo_and_hyo()
27 hxo = vv->standard->h_offset; in calculate_hxo_and_hyo()
36 /* helper functions for the calculation of the horizontal- and vertical
37 scaling registers, clip-format-register etc ...
38 these functions take pointers to the (most-likely read-out
39 original-values) and manipulate them according to the requested
43 /* hps_coeff used for CXY and CXUV; scale 1/1 -> scale 1/64 */
63 /* table of attenuation values for horizontal scaling */
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/linux/drivers/iio/light/
H A Dtsl2583.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 * Copyright (c) 2016-2017 Brian Masney <masneyb@onstation.org>
61 /* Per-device data */
113 /* Index = (0 - 3) Used to validate the gain selection index */
131 chip->als_settings.als_time = 100; in tsl2583_defaults()
137 chip->als_settings.als_gain = 0; in tsl2583_defaults()
139 /* Default gain trim to account for aperture effects */ in tsl2583_defaults()
140 chip->als_settings.als_gain_trim = 1000; in tsl2583_defaults()
143 chip->als_settings.als_cal_target = 130; in tsl2583_defaults()
146 memcpy(chip->als_settings.als_device_lux, tsl2583_default_lux, in tsl2583_defaults()
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H A Dmax44000.c1 // SPDX-License-Identifier: GPL-2.0-only
9 * 7-bit I2C slave address 0x4a
88 /* Scale can be multiplied by up to 128x via ALSPGA for measurement gain */
95 * This scaling factor is hidden from userspace and instead accounted for when
165 .scan_index = -1,
174 ret = regmap_read(data->regmap, MAX44000_REG_CFG_RX, &val); in max44000_read_alstim()
182 return regmap_write_bits(data->regma in max44000_write_alstim()
491 max44000_trigger_handler(int irq,void * p) max44000_trigger_handler() argument
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/linux/Documentation/scheduler/
H A Dschedutil.rst15 individual tasks to task-group slices to CPU runqueues. As the basis for this
31 Note that blocked tasks still contribute to the aggregates (task-group slices
51 Dynamic Voltage and Frequency Scaling (DVFS) ratio and one microarch ratio.
57 r_dvfs := -----
61 hardware counters (Intel APERF/MPERF, ARMv8.4-AMU) to provide us this ratio.
65 f_cur := ----- * P0
68 4C-turbo; if available and turbo enabled
69 f_max := { 1C-turbo; if turbo enabled
73 r_dvfs := min( 1, ----- )
88 - kernel/sched/pelt.h:update_rq_clock_pelt()
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/linux/net/ipv4/
H A Dtcp_bbr.c21 * +---> STARTUP ----+
24 * | DRAIN ----+
27 * +---> PROBE_BW ----+
30 * | +----+ |
32 * +---- PROBE_RTT <--+
37 * A long-lived BBR flow spends the vast majority of its time remaining
42 * it briefly enters PROBE_RTT to cut inflight to a minimum value to re-probe
43 * the path's two-way propagation delay (min_rtt). When exiting PROBE_RTT, if
48 * "BBR: Congestion-Based Congestion Control",
50 * Van Jacobson. ACM Queue, Vol. 14 No. 5, September-October 2016.
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/linux/drivers/iio/magnetometer/
H A Dhmc5843_core.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Device driver for the HMC5843 multi-chip module designed
11 * Split to multiple files by Josef Gajdusek <atx@atx.name> - 2014
26 * Range gain settings in (+-)Ga
28 * ranges; default corresponds to +-1.0 Ga and +-1.3 Ga, respectively
64 * 0 - Normal measurement configuration (default): In normal measurement
68 * 1 - Positive bias configuration: In positive bias configuration, a
72 * 2 - Negative bias configuration. In negative bias configuration, a
76 * 3 - Only available on HMC5983. Magnetic sensor is disabled.
86 /* Scaling factors: 10000000/Gain */
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/linux/drivers/gpu/drm/sti/
H A Dsti_hqvdp.c1 // SPDX-License-Identifier: GPL-2.0
9 #include <linux/dma-mapping.h>
31 #define HQVDP_FMW_NAME "hqvdp-stih407.bin"
258 /* Default Contrast & Brightness gain = 256 */
260 /* Default Saturation gain = 256 */
376 * -1 in error cases
381 u32 cmd = hqvdp->hqvdp_cmd_paddr; in sti_hqvdp_get_free_cmd()
384 curr_cmd = readl(hqvdp->regs + HQVDP_MBX_CURRENT_CMD); in sti_hqvdp_get_free_cmd()
385 next_cmd = readl(hqvdp->regs + HQVDP_MBX_NEXT_CMD); in sti_hqvdp_get_free_cmd()
393 return -1; in sti_hqvdp_get_free_cmd()
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/linux/sound/soc/sof/
H A Dipc4-topology.c1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
13 #include <sound/intel-nhlt.h>
14 #include "sof-priv.h"
15 #include "sof-audio.h"
16 #include "ipc4-priv.h"
17 #include "ipc4-topology.h"
24 * message and it is used for clock scaling.
26 * deactivating the clock scaling.
31 "Ignore CPC values. This option will disable clock scaling in firmware.");
166 [SOF_GAIN_TOKENS] = {"Gain tokens", gain_tokens, ARRAY_SIZE(gain_tokens)},
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/linux/drivers/staging/media/ipu3/include/uapi/
H A Dintel-ipu3.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /* Copyright (C) 2017 - 2018 Intel Corporation */
11 /* Vendor specific - used for IPU3 camera sub-system */
13 #define V4L2_META_FMT_IPU3_PARAMS v4l2_fourcc('i', 'p', '3', 'p')
15 #define V4L2_META_FMT_IPU3_STAT_3A v4l2_fourcc('i', 'p', '3', 's')
17 /* from include/uapi/linux/v4l2-controls.h */
26 #define IPU3_UAPI_GRID_START_MASK ((1 << 12) - 1)
34 * struct ipu3_uapi_grid_config - Grid plane config
56 * create a grid-based output, and the data is then divided into "slices".
71 * struct ipu3_uapi_awb_set_item - Memory layout for each cell in AWB
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/linux/include/linux/
H A Dsched.h1 /* SPDX-License-Identifier: GPL-2.0 */
41 #include <linux/posix-timers_types.h>
91 * We have two separate sets of flags: task->__state
92 * is about runnability, while task->exit_state are
98 /* Used in tsk->__state: */
104 /* Used in tsk->exit_state: */
108 /* Used in tsk->__state again: */
121 #define TASK_ANY (TASK_STATE_MAX-1)
144 #define task_is_running(task) (READ_ONCE((task)->__state) == TASK_RUNNING)
146 #define task_is_traced(task) ((READ_ONCE(task->jobctl) & JOBCTL_TRACED) != 0)
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/linux/include/uapi/linux/
H A Dsoundcard.h2 * Copyright by Hannu Savolainen 1993-1997
228 #define WAVE_UNSIGNED 0x02 /* bit 1 = Signed - Unsigned data. */
229 #define WAVE_LOOPING 0x04 /* bit 2 = looping enabled-1. */
233 #define WAVE_ENVELOPES 0x40 /* bit 6 = Enable envelopes - 1 */
239 #define WAVE_SCALE 0x00040000 /* The scaling info is valid */
269 int panning; /* -128=left, 127=right */
378 /* undefined 0x14 - 0x1f */
395 /* undefined 0x46 - 0x4f */
401 /* undefined 0x54 - 0x5a */
414 /* undefined 0x66 - 0x78 */
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/linux/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/
H A Ddm.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2009-2010 Realtek Corporation.*/
17 0x081, /* 0, -12.0dB */
18 0x088, /* 1, -11.5dB */
19 0x090, /* 2, -11.0dB */
20 0x099, /* 3, -10.5dB */
21 0x0A2, /* 4, -10.0dB */
22 0x0AC, /* 5, -9.5dB */
23 0x0B6, /* 6, -9.0dB */
24 0x0C0, /* 7, -8.5dB */
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/linux/drivers/media/usb/gspca/
H A Dov519.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2008-2011 Jean-François Moine <moinejf@free.fr>
8 * This module is adapted from the ov51x-jpeg package, which itself
13 * Copyright (c) 1999-2006 Mark W. McClelland
17 * OV7620 fixes by Charl P. Botha <cpbotha@ieee.org>
20 * ov51x-jpeg original copyright is:
22 * Copyright (c) 2004-2007 Romain Beauxis <toots@rastageeks.org>
38 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
482 /*jfm: this value does not work for 800x600 - see isoc_init */
501 #define OV7610_REG_GAIN 0x00 /* gain setting (5:0) */
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