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/linux/Documentation/devicetree/bindings/iio/adc/
H A Datmel,sama5d2-adc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/atmel,sama5d2-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Eugen Hristev <eugen.hristev@microchip.com>
15 - atmel,sama5d2-adc
16 - microchip,sam9x60-adc
17 - microchip,sama7g5-adc
28 clock-names:
31 vref-supply: true
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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#
10 STM32 ADC is a successive approximation analog-to-digital converter.
13 stored in a left-aligned or right-aligned 32-bit data register.
17 voltage goes beyond the user-defined, higher or lower thresholds.
22 - Fabrice Gasnier <fabrice.gasnier@foss.st.com>
27 - st,stm32f4-adc-core
28 - st,stm32h7-adc-core
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/linux/include/sound/sof/
H A Ddai-intel.h1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
61 /* SSP Configuration Request - SOF_IPC_DAI_SSP_CONFIG */
67 uint32_t mclk_rate; /* mclk frequency in Hz */
68 uint32_t fsync_rate; /* fsync frequency in Hz */
69 uint32_t bclk_rate; /* bclk frequency in Hz */
93 /* HDA Configuration Request - SOF_IPC_DAI_HDA_CONFIG */
97 uint32_t rate; member
101 /* ALH Configuration Request - SOF_IPC_DAI_ALH_CONFIG */
105 uint32_t rate; member
112 /* DMIC Configuration Request - SOF_IPC_DAI_DMIC_CONFIG */
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/linux/net/ipv4/
H A Dtcp_nv.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * TCP-NV is a successor of TCP-Vegas that has been developed to
7 * Like TCP-Vegas, TCP-NV supports true congestion avoidance,
9 * When congestion (queue buildup) starts to occur, TCP-NV
22 * seen issues with rx-frames values greater than 8.
46 * slow-start due to congestion
47 * nv_stop_rtt_cnt Only grow cwnd for this many RTTs after non-congestion
51 * How quickly to double growth rate (not rate) of cwnd when not
53 * rate < 1 pkt/RTT (after losses). The other (nv_cwnd_growth_rate_pos)
102 u32 nv_min_rtt; /* active min rtt. Used to determine slope */
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H A Dtcp_westwood.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * TCP Westwood+: end-to-end bandwidth estimation for TCP
10 * - Mascolo S, Casetti, M. Gerla et al.
13 * - A. Grieco, s. Mascolo
17 * - A. Dell'Aera, L. Grieco, S. Mascolo.
18 * "Linux 2.4 Implementation of Westwood+ TCP with Rate-Halving :
21 * Westwood+ employs end-to-end bandwidth measurement to set cwnd and
43 u8 reset_rtt_min; /* Reset RTT min to next RTT sample*/
47 #define TCP_WESTWOOD_RTT_MIN (HZ/20) /* 50ms */
48 #define TCP_WESTWOOD_INIT_RTT (20*HZ) /* maybe too conservative?! */
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H A Dtcp_bbr.c3 * BBR congestion control computes the sending rate based on the delivery
4 * rate (throughput) estimated from ACKs. In a nutshell:
14 * observed, or adjust the sending rate if it estimates there is a
15 * traffic policer, in order to keep the drop rate reasonable.
21 * +---> STARTUP ----+
24 * | DRAIN ----+
27 * +---> PROBE_BW ----+
30 * | +----+ |
32 * +---- PROBE_RTT <--+
34 * A BBR flow starts in STARTUP, and ramps up its sending rate quickly.
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/linux/tools/testing/selftests/bpf/progs/
H A Dbpf_cubic.c1 // SPDX-License-Identifier: GPL-2.0-only
13 * "while (ca->ack_cnt > delta)" loop is changed to the equivalent
14 * "ca->ack_cnt / delta" operation.
22 #define clamp(val, lo, hi) min((typeof(val))max(val, lo), hi)
23 #define min(a, b) ((a) < (b) ? (a) : (b)) macro
27 return (__s32)(seq1-seq2) < 0; in before()
37 #define BICTCP_HZ 10 /* BIC HZ 2^10 = 1024 */
62 / (BICTCP_BETA_SCALE - beta);
63 /* calculate the "K" for (wmax-cwnd) = c/rtt * K^3
64 * so K = cubic_root( (wmax-cwnd)*rtt/c )
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/linux/include/sound/
H A Dpcm.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
8 * Abramo Bagnara <abramo@alsa-project.org>
21 #define snd_pcm_substream_chip(substream) ((substream)->private_data)
22 #define snd_pcm_chip(pcm) ((pcm)->private_data)
37 unsigned int rate_min; /* min rate */
382 unsigned int rate; /* rate in Hz */ global() member
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H A Demu10k1.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
16 #include <sound/pcm-indirect.h>
25 /* ------------------- DEFINES -------------------- */
33 /* FIXME? - according to the OSS driver the EMU10K1 needs a 29 bit DMA mask */
41 // This is used to define hardware bit-fields (sub-registers) by combining
44 // The non-concatenating (_NC) variant should be used directly only for
45 // sub-registers that do not follow the <register>_<field> naming pattern.
55 // Macros for manipulating values of bit-fields declared using the above macros.
59 // single sub-register at a time.
62 #define REG_MASK0(r) ((1U << REG_SIZE(r)) - 1U)
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/linux/sound/hda/
H A Dhdac_device.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * HD-audio codec core device
28 * snd_hdac_device_init - initialize the HD-audio codec base device
48 dev = &codec->dev; in snd_hdac_device_init()
50 dev->parent = bus->dev; in snd_hdac_device_init()
51 dev->bus = &snd_hda_bus_type; in snd_hdac_device_init()
52 dev->release = default_release; in snd_hdac_device_init()
53 dev->groups = hdac_dev_attr_groups; in snd_hdac_device_init()
57 codec->bus = bus; in snd_hdac_device_init()
58 codec->addr = addr; in snd_hdac_device_init()
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/linux/net/dccp/ccids/
H A Dccid3.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (c) 2005-7 The University of Waikato, Hamilton, New Zealand.
5 * Copyright (c) 2005-7 Ian McDonald <ian.mcdonald@jandi.co.nz>
14 * Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon
35 * Transmitter Half-Connection Routines
54 enum ccid3_hc_tx_states oldstate = hc->tx_state; in ccid3_hc_tx_set_state()
56 ccid3_pr_debug("%s(%p) %-8.8s -> %s\n", in ccid3_hc_tx_set_state()
60 hc->tx_state = state; in ccid3_hc_tx_set_state()
64 * Compute the initial sending rate X_init in the manner of RFC 3390:
66 * X_init = min(4 * s, max(2 * s, 4380 bytes)) / RTT
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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/sound/soc/renesas/rcar/
H A Dadg.c1 // SPDX-License-Identifier: GPL-2.0
3 // Helper routines for R-Car sound ADG.
6 #include <linux/clk-provider.h>
50 (i < adg->clkin_size) && \
51 ((pos) = adg->clkin[i]); \
55 (i < adg->clkout_size) && \
56 ((pos) = adg->clkout[i]); \
58 #define rsnd_priv_to_adg(priv) ((struct rsnd_adg *)(priv)->adg)
85 for (i = 3; i >= 0; i--) { in rsnd_adg_calculate_brgx()
88 return (u32)((i << 8) | ((div / ratio) - 1)); in rsnd_adg_calculate_brgx()
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/linux/net/dccp/
H A Dinput.c1 // SPDX-License-Identifier: GPL-2.0-or-later
19 /* rate-limit for syncs in reply to sequence-invalid packets; RFC 4340, 7.5.4 */
20 int sysctl_dccp_sync_ratelimit __read_mostly = HZ / 8;
24 __skb_pull(skb, dccp_hdr(skb)->dccph_doff * 4); in dccp_enqueue_skb()
25 __skb_queue_tail(&sk->sk_receive_queue, skb); in dccp_enqueue_skb()
27 sk->sk_data_ready(sk); in dccp_enqueue_skb()
38 sk->sk_shutdown = SHUTDOWN_MASK; in dccp_fin()
47 switch (sk->sk_state) { in dccp_rcv_close()
50 * - CLOSED (may be a late or duplicate packet) in dccp_rcv_close()
51 * - PASSIVE_CLOSEREQ (the peer has sent a CloseReq earlier) in dccp_rcv_close()
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/linux/sound/ppc/
H A Dbeep.c1 // SPDX-License-Identifier: GPL-2.0-or-later
14 #include <linux/dma-mapping.h>
21 int volume; /* mixer volume: 0-100 */
23 int hz; member
35 struct pmac_beep *beep = chip->beep; in snd_pmac_beep_stop()
36 if (beep && beep->running) { in snd_pmac_beep_stop()
37 beep->running = 0; in snd_pmac_beep_stop()
43 * Stuff for outputting a beep. The values range from -327 to +327
61 58, 45, 32, 18, 3, -11, -26, -41,
62 -55, -68, -79, -88, -95, -100, -102, -102,
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/linux/block/
H A Dblk-wbt.c1 // SPDX-License-Identifier: GPL-2.0
6 * - Monitor latencies in a defined window of time.
7 * - If the minimum latency in the above window exceeds some target, increment
10 * - For any window where we don't have solid data on what the latencies
12 * - If latencies look good, decrement scaling step.
13 * - If we're only doing writes, allow the scaling step to go negative. This
25 #include <linux/backing-dev.h>
28 #include "blk-stat.h"
29 #include "blk-wbt.h"
30 #include "blk-rq-qos.h"
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/linux/sound/pci/rme9652/
H A Dhdspm.c1 // SPDX-License-Identifier: GPL-2.0-or-later
9 * Modified 2006-06-01 for AES32 support by Remy Bruno
12 * Modified 2009-04-13 for proper metering by Florian Faber
15 * Modified 2009-0
1220 hdspm_round_frequency(int rate) hdspm_round_frequency() argument
1238 hdspm_rate_multiplier(struct hdspm * hdspm,int rate) hdspm_rate_multiplier() argument
1254 int syncref, rate = 0, rate_bits; hdspm_external_sample_rate() local
1593 hdspm_set_dds_value(struct hdspm * hdspm,int rate) hdspm_set_dds_value() argument
1629 hdspm_set_rate(struct hdspm * hdspm,int rate,int called_internally) hdspm_set_rate() argument
2196 unsigned int period, rate; hdspm_get_pll_freq() local
2210 unsigned int rate; hdspm_get_system_sample_rate() local
2269 int rate = ucontrol->value.integer.value[0]; snd_hdspm_put_system_sample_rate() local
2385 int rate = hdspm_external_sample_rate(hdspm); hdspm_external_rate_to_enum() local
2618 int rate; hdspm_set_clock_source() local
4753 u32 rate; snd_hdspm_proc_read_tco() local
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/linux/sound/pci/ac97/
H A Dac97_pcm.c1 // SPDX-License-Identifier: GPL-2.0-or-later
151 if (pcm->spdif) in get_slot_reg()
153 if (pcm->stream == SNDRV_PCM_STREAM_PLAYBACK) in get_slot_reg()
154 return rate_reg_tables[dbl][pcm->r[dbl].rate_table[cidx]][slot - 3]; in get_slot_reg()
156 return rate_cregs[slot - 3]; in get_slot_reg()
159 static int set_spdif_rate(struct snd_ac97 *ac97, unsigned short rate) in set_spdif_rate() argument
164 if (! (ac97->ext_id & AC97_EI_SPDIF)) in set_spdif_rate()
165 return -ENODEV; in set_spdif_rate()
167 /* TODO: double rate support */ in set_spdif_rate()
168 if (ac97->flags & AC97_CS_SPDIF) { in set_spdif_rate()
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/linux/sound/soc/codecs/
H A Dda9055.c1 // SPDX-License-Identifier: GPL-2.0-or-later
58 /* Input - Gain, Select and Filter Registers */
71 /* Output - Gain, Select and Filter Registers */
288 0x0, 0x10, TLV_DB_SCALE_ITEM(-5400, 0, 0),
289 /* -54dB to 15dB */
290 0x11, 0x3f, TLV_DB_SCALE_ITEM(-5400, 150, 0)
295 /* -78dB to 12dB */
296 0x08, 0x7f, TLV_DB_SCALE_ITEM(-7800, 75, 0)
305 static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, -600, 600, 0);
306 static const DECLARE_TLV_DB_SCALE(mixin_gain_tlv, -450, 150, 0);
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/linux/include/xen/interface/io/
H A Dsndif.h1 /* SPDX-License-Identifier: MIT */
5 * Unified sound-device I/O interface for Xen guest OSes.
7 * Copyright (C) 2013-2015 GlobalLogic Inc.
8 * Copyright (C) 2016-2017 EPAM Systems Inc.
34 * Front->back notifications: when enqueuing a new request, sending a
36 * hold-off mechanism provided by the ring macros). Backends must set
39 * Back->front notifications: when enqueuing a new response, sending a
41 * hold-off mechanism provided by the ring macros). Frontends must set
44 * The two halves of a para-virtual sound card driver utilize nodes within
58 * Note: depending on the use-case backend can expose more sound cards and
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/linux/sound/pci/
H A Drme96.c1 // SPDX-License-Identifier: GPL-2.0-or-later
35 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
254 #define RME96_ISPLAYING(rme96) ((rme96)->wcreg & RME96_WCR_START)
255 #define RME96_ISRECORDING(rme96) ((rme96)->wcreg & RME96_WCR_START_2)
256 #define RME96_HAS_ANALOG_IN(rme96) ((rme96)->pci->devic
580 int n, rate; snd_rme96_capture_getrate() local
642 int rate, dummy; snd_rme96_playback_getrate() local
673 snd_rme96_playback_setrate(struct rme96 * rme96,int rate) snd_rme96_playback_setrate() argument
726 snd_rme96_capture_analog_setrate(struct rme96 * rme96,int rate) snd_rme96_capture_analog_setrate() argument
956 int err, rate, dummy; snd_rme96_playback_hw_params() local
1020 int err, isadat, rate; snd_rme96_capture_hw_params() local
1160 int rate, dummy; snd_rme96_playback_spdif_open() local
1198 int isadat, rate; snd_rme96_capture_spdif_open() local
1230 int rate, dummy; snd_rme96_playback_adat_open() local
1264 int isadat, rate; snd_rme96_capture_adat_open() local
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/linux/sound/drivers/
H A Ddummy.c1 // SPDX-License-Identifier: GPL-2.0-or-later
45 #define USE_MIXER_VOLUME_LEVEL_MIN -50
48 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
50 static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
51 static char *model[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = NULL};
52 static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
53 static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8};
54 //static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
71 MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
73 MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver.");
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H A Daloop.c1 // SPDX-License-Identifier: GPL-2.0-or-later
8 * More accurate positioning and full-duplex support:
9 * Copyright (c) Ahmet İnan <ainan at mathematik.uni-freiburg.de>
39 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
41 static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
42 static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8};
53 MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-8) for loopback driver.");
55 MODULE_PARM_DESC(pcm_notify, "Break capture when PCM format/rate/channels changes.");
70 * call in loopback->cable_lock
74 * call in cable->lock
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/linux/drivers/iio/imu/inv_mpu6050/
H A Dinv_mpu_core.c1 // SPDX-License-Identifier: GPL-2.0-only
323 clock = st->chip_config.clk; in inv_mpu6050_pwr_mgmt_1_write()
325 temp_dis = !st->chip_config.temp_en; in inv_mpu6050_pwr_mgmt_1_write()
335 dev_dbg(regmap_get_device(st->map), "pwr_mgmt_1: 0x%x\n", val); in inv_mpu6050_clock_switch()
336 return regmap_write(st->map, st->reg->pwr_mgmt_ in inv_mpu6050_clock_switch()
1263 inv_mpu6050_set_lpf(struct inv_mpu6050_state * st,int rate) inv_mpu6050_set_lpf() argument
1265 static const int hz[] = {400, 200, 90, 40, 20, 10}; inv_mpu6050_set_lpf() local
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/linux/drivers/comedi/drivers/
H A Dusbdux.c1 // SPDX-License-Identifier: GPL-2.0+
4 * Copyright (C) 2003-2014 Bernd Porr, mail@berndporr.me.uk
10 * Devices: [ITL] USB-DUX (usbdux)
17 * The sampling rate of the counter is approximately 500Hz.
20 * the max sampling rate. If you sample only one channel you get 8kHz
21 * sampling rate. If you sample two channels you get 4kHz and so on.
26 * wrote the driver for AT-MIO-16d. I used some parts of this
46 * | kernel | registration | usbdux-usb | usbdux-comedi | comedi |
54 * rate.
56 * Two 16 bit up/down/reset counter with a sampling rate of 1kHz
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