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/linux/drivers/clk/bcm/
H A Dclk-kona.c1 // SPDX-License-Identifier: GPL-2.0-only
7 #include "clk-kona.h"
12 #include <linux/clk-provider.h>
28 /* Produces a mask of set bits covering a range of a 32-bit value */
31 return ((1 << width) - 1) << shift; in bitfield_mask()
50 /* Convert a divider into the scaled divisor value it represents. */
53 return (u64)reg_div + ((u64)1 << div->u.s.frac_width); in scaled_div_value()
56 /* The scaled minimum divisor representable by a divider */
61 return (u64)div->u.fixed; in scaled_div_min()
66 /* The scaled maximum divisor representable by a divider */
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/linux/drivers/gpu/drm/i915/display/
H A Dintel_lvds_regs.h1 /* SPDX-License-Identifier: MIT */
18 /* Selects pipe B for LVDS data. Must be set on pre-965. */
25 /* LVDS sync polarity flags. Set to invert (i.e. negative) */
29 /* Enable border for unscaled (or aspect-scaled) display */
32 * Enables the A0-A2 data pairs and CLKA, containing 18 bits of color data per
54 * Controls the B0-B3 data pairs. This must be set to match the DPLL p2
55 * setting for whether we are in dual-channel mode. The B3 pair will
/linux/Documentation/sound/cards/
H A Dhdspm.rst2 Software Interface ALSA-DSP MADI Driver
5 (translated from German, so no good English ;-),
7 2004 - winfried ritsch
11 the Controls and startup-options are ALSA-Standard and only the
19 ------------------
21 * number of channels -- depends on transmission mode
27 scaled. (Only important for low performance boards).
29 * Single Speed -- 1..64 channels
37 * Double Speed -- 1..32 channels
40 Note: Choosing the 56-channel mode for
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/linux/drivers/media/pci/bt8xx/
H A Dbttvp.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 bttv - Bt848 frame grabber driver
6 bttv's *private* header file -- nobody other than bttv itself
9 (c) 2000-2002 Gerd Knorr <kraxel@bytesex.org>
19 #include <linux/i2c-algo-bit.h>
26 #include <media/v4l2-common.h>
27 #include <media/v4l2-ctrls.h>
28 #include <media/v4l2-fh.h>
29 #include <media/videobuf2-dma-sg.h>
31 #include <media/rc-core.h>
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/linux/net/netfilter/ipvs/
H A Dip_vs_est.c1 // SPDX-License-Identifier: GPL-2.0-or-later
36 avgrate = avgrate*(1-W) + rate*W
38 where W = 2^(-2)
42 * Average bps is scaled by 2^5, while average pps and cps are scaled by 2^10.
44 * Netlink users can see 64-bi
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/linux/drivers/net/wireless/intel/iwlwifi/mld/
H A Dptp.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
7 #include "iwl-debug.h"
12 /* The scaled_ppm parameter is ppm (parts per million) with a 16-bit fractional
14 * 2^-16 ppm, and 2^16=65536 is 1 ppm.
24 *gp2 = iwl_read_prph(mld->trans, mld->trans->mac_cfg->base->gp2_reg_addr); in iwl_mld_get_systime()
27 return -EINVAL; in iwl_mld_get_systime()
35 mld->ptp_data.last_gp2, gp2); in iwl_mld_ptp_update_new_read()
40 if (gp2 < mld->ptp_data.last_gp2) { in iwl_mld_ptp_update_new_read()
41 if (mld->ptp_data.last_gp2 - gp2 < in iwl_mld_ptp_update_new_read()
45 gp2, mld->ptp_data.last_gp2); in iwl_mld_ptp_update_new_read()
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/linux/drivers/net/wireless/intel/iwlwifi/mvm/
H A Dptp.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
3 * Copyright (C) 2021 - 2023, 2025 Intel Corporation
7 #include "iwl-debug.h"
14 /* The scaled_ppm parameter is ppm (parts per million) with a 16-bit fractional
16 * 2^-16 ppm, and 2^16=65536 is 1 ppm.
28 if (gp2 < mvm->ptp_data.last_gp2 && in iwl_mvm_ptp_update_new_read()
29 mvm->ptp_data.last_gp2 - gp2 < IWL_PTP_WRAP_THRESHOLD_USEC) { in iwl_mvm_ptp_update_new_read()
32 gp2, mvm->ptp_data.last_gp2); in iwl_mvm_ptp_update_new_read()
36 if (gp2 < mvm->ptp_data.last_gp2) { in iwl_mvm_ptp_update_new_read()
37 mvm->ptp_data.wrap_counter++; in iwl_mvm_ptp_update_new_read()
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/linux/drivers/gpu/drm/gma500/
H A Dpsb_intel_sdvo_regs.h2 * Copyright ? 2006-2007 Intel Corporation
83 * bits 4-5 of vsync offset, and 2 high bits of vsync width.
88 /** bits 6-7 of vsync offset at bits 6-7 */
104 u8 scaled:1; member
151 * Reports which inputs are trained (managed to sync).
169 * on multi-output devices.
427 scaled for the requested HDTV format */
539 * The high fields are bits 8:9 of the 10-bit values.
/linux/kernel/time/
H A Dntp.c1 // SPDX-License-Identifier: GPL-2.0
27 * struct ntp_data - Structure holding all NTP related state
35 * @time_maxerror: Maximum error in microseconds holding the NTP sync distance
38 * @time_freq: Frequency offset scaled nsecs/secs
41 * @ntp_tick_adj: Constant boot-param configurable NTP tick adjustment (upscaled)
50 * @pps_freq: PPS frequency offset in scaled ns/s
51 * @pps_stabil: PPS current stability in scaled ns/s
91 [ 0 ... TIMEKEEPERS_MAX - 1 ] = {
111 * The following variables are used when a pulse-per-second (PPS) signal
130 if (ntpdata->time_status & STA_PPSTIME && ntpdata->time_status & STA_PPSSIGNAL) in ntp_offset_chunk()
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/linux/Documentation/userspace-api/media/v4l/
H A Dcrop.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
6 Image Cropping, Insertion and Scaling -- the CROP API
12 <selection-api>`. The new API should be preferred in most cases,
15 equivalent in the SELECTION API. See :ref:`selection-vs-crop` for a
62 .. _crop-scale:
64 .. kernel-figure:: crop.svg
80 relative to 0H (the leading edge of the horizontal sync pulse, see
81 :ref:`vbi-hsync`). Vertically ITU-R line numbers of the first field
82 (see ITU R-525 line numbering for :ref:`525 lines <vbi-525>` and for
83 :ref:`625 lines <vbi-625>`), multiplied by two if the driver
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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/drivers/net/ethernet/intel/ixgbe/
H A Dixgbe_ptp.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
30 * Period * [ 2 ^ ( MaxWidth - PeriodWidth ) ]
47 * +--------------+ +--------------+
49 * *--------------+ +--------------+
52 * +--------------+ +--------------+
54 * *--------------+ +--------------+
58 * 2^36 * 10^-9 / 60 = 1.14 minutes or 69 seconds
61 * 2^43 * 10^-9 / 3600 = 2.4 hours
89 * represents units of 2^-32 nanoseconds, and uses 31 bits for this, with the
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/linux/drivers/net/ethernet/intel/idpf/
H A Didpf_ptp.c1 // SPDX-License-Identifier: GPL-2.0-only
8 * idpf_ptp_get_access - Determine the access type of the PTP features
18 if (adapter->ptp->caps & direct) in idpf_ptp_get_access()
20 else if (adapter->ptp->caps & mailbox) in idpf_ptp_get_access()
27 * idpf_ptp_get_features_access - Determine the access type of PTP features
35 struct idpf_ptp *ptp = adapter->ptp; in idpf_ptp_get_features_access()
41 ptp->get_dev_clk_time_access = idpf_ptp_get_access(adapter, in idpf_ptp_get_features_access()
48 ptp->get_cross_tstamp_access = idpf_ptp_get_access(adapter, in idpf_ptp_get_features_access()
55 ptp->set_dev_clk_time_access = idpf_ptp_get_access(adapter, in idpf_ptp_get_features_access()
62 ptp->adj_dev_clk_time_access = idpf_ptp_get_access(adapter, in idpf_ptp_get_features_access()
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/linux/drivers/media/platform/verisilicon/
H A Dhantro_hw.h1 /* SPDX-License-Identifier: GPL-2.0 */
13 #include <linux/v4l2-controls.h>
14 #include <media/v4l2-ctrls.h>
15 #include <media/v4l2-vp9.h>
16 #include <media/videobuf2-core.h>
58 * struct hantro_aux_buf - auxiliary DMA buffer for hardware data
110 * @dpb_longterm: DPB long-term
229 * @tile_r_info: per-tile information array
230 * @tile_c_info: per-tile information array
354 * struct hantro_postproc_ops - post-processor operations
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/linux/sound/usb/
H A Dendpoint.c1 // SPDX-License-Identifier: GPL-2.0-or-later
64 * expect the payload to carry Q10.14 / Q16.16 formatted sync information
99 if (u->urb && u->buffer_size) in release_urb_ctx()
100 usb_free_coherent(u->ep->chip->dev, u->buffer_size, in release_urb_ctx()
101 u->urb->transfer_buffer, in release_urb_ctx()
102 u->urb->transfer_dma); in release_urb_ctx()
103 usb_free_urb(u->urb); in release_urb_ctx()
104 u->urb = NULL; in release_urb_ctx()
105 u->buffer_size = 0; in release_urb_ctx()
111 case -ENODEV: in usb_error_string()
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/linux/drivers/net/ethernet/sfc/siena/
H A Dptp.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright 2011-2013 Solarflare Communications Inc.
143 #define MC_NANOSECOND_MASK ((1 << MC_NANOSECOND_BITS) - 1)
144 #define MC_SECOND_MASK ((1 << (32 - MC_NANOSECOND_BITS)) - 1)
146 /* Maximum parts-per-billion adjustment that is acceptable */
161 * struct efx_ptp_match - Matching structure, stored in sk_buff's cb area.
165 * @state: The state of the packet - whether it is ready for processing or
175 * struct efx_ptp_event_rx - A PTP receive event (from MC)
191 * struct efx_ptp_timeset - Synchronisation between host and MC
207 u32 window; /* Derived: end - start, allowing for wrap */
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/linux/drivers/net/ethernet/sfc/
H A Dptp.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright 2011-2013 Solarflare Communications Inc.
116 /* 01-1B-19-00-00-00 */
142 #define MC_NANOSECOND_MASK ((1 << MC_NANOSECOND_BITS) - 1)
143 #define MC_SECOND_MASK ((1 << (32 - MC_NANOSECOND_BITS)) - 1)
145 /* Maximum parts-per-billion adjustment that is acceptable */
160 * struct efx_ptp_match - Matching structure, stored in sk_buff's cb area.
163 * @state: The state of the packet - whether it is ready for processing or
172 * struct efx_ptp_event_rx - A PTP receive event (from MC)
188 * struct efx_ptp_timeset - Synchronisation between host and MC
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/linux/drivers/media/pci/ivtv/
H A Divtv-ioctl.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
5 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@kernel.org>
9 #include "ivtv-driver.h"
10 #include "ivtv-version.h"
11 #include "ivtv-mailbox.h"
12 #include "ivtv-i2c.h"
13 #include "ivtv-queue.h"
14 #include "ivtv-fileops.h"
15 #include "ivtv-vbi.h"
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/linux/drivers/gpu/drm/bridge/
H A Dtda998x_drv.c1 // SPDX-License-Identifier: GPL-2.0-only
15 #include <sound/hdmi-codec.h>
25 #include <media/cec-notifier.h>
27 #include <dt-bindings/display/tda998x.h>
411 .addr = priv->cec_addr, in cec_write()
417 ret = i2c_transfer(priv->hdmi->adapter, &msg, 1); in cec_write()
419 dev_err(&priv->hdmi->dev, "Error %d writing to cec:0x%x\n", in cec_write()
429 .addr = priv->cec_addr, in cec_read()
433 .addr = priv->cec_addr, in cec_read()
441 ret = i2c_transfer(priv->hdmi->adapter, msg, ARRAY_SIZE(msg)); in cec_read()
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/linux/drivers/iio/imu/
H A Dadis16550.c1 // SPDX-License-Identifier: GPL-2.0
66 /* max of 4000 SPS in scale sync */
140 /* Calculate crc4 over four-bit nibbles, starting at the MSbit */ in spi_crc4()
141 for (i = bits - 4; i >= 0; i -= 4) in spi_crc4()
159 dev_err(&adis->spi->dev, in adis16550_spi_validate()
162 return -EIO; in adis16550_spi_validate()
166 dev_err(&adis->spi->dev, in adis16550_spi_validate()
168 return -EIO; in adis16550_spi_validate()
201 struct spi_device *spi = adis->spi; in adis16550_spi_xfer()
205 .tx_buf = &st->din[0], in adis16550_spi_xfer()
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/linux/drivers/video/fbdev/
H A Dpm2fb.c8 * Copyright (c) 1998-2000 Ilario Nardinocchi (nardinoc@CS.UniBO.IT)
14 * I have a Creative Graphics Blaster Exxtreme card - pm2fb on x86. I
16 * hopefully other big-endian) devices now work, thanks to a lot of
71 * support on TVP4010 and similar where there is no RAMDAC - see
72 * comment in set_video) always request +ve sync regardless of what
74 * fixed-frequency monitor which absolutely has to have -ve sync. So
75 * these flags allow the user to specify that requests for +ve sync
76 * should be silently turned in -ve sync.
128 .height = -1,
129 .width = -1,
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H A Datmel_lcdfb.c13 #include <linux/dma-mapping.h>
69 #define lcdc_readl(sinfo, reg) __raw_readl((sinfo)->mmio+(reg))
70 #define lcdc_writel(sinfo, reg, val) __raw_writel((val), (sinfo)->mmio+(reg))
107 /* some bl->props field just changed */
140 if (sinfo->backlight) in init_backlight()
146 bl = backlight_device_register("backlight", &sinfo->pdev->dev, sinfo, in init_backlight()
149 dev_err(&sinfo->pdev->dev, "error %ld on backlight register\n", in init_backlight()
153 sinfo->backlight = bl; in init_backlight()
155 bl->props.power = BACKLIGHT_POWER_ON; in init_backlight()
156 bl->props.brightness = atmel_bl_get_brightness(bl); in init_backlight()
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/linux/net/batman-adv/
H A Dtypes.h1 /* SPDX-License-Identifier: GPL-2.0 */
36 * typedef batadv_dat_addr_t - type used for all DHT addresses
47 * enum batadv_dhcp_recipient - dhcp destination
61 * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
67 * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
73 * struct batadv_hard_iface_bat_iv - per hard-interfac
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/linux/drivers/net/wireless/ath/ath10k/
H A Dhtt.h1 /* SPDX-License-Identifier: ISC */
3 * Copyright (c) 2005-2011 Atheros Communications Inc.
4 * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
6 * Copyright (c) 2021, 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
29 /* bits 5-23 currently reserved */
34 enum htt_h2t_msg_type { /* host-to-target */
57 u8 pad[sizeof(u32) - sizeof(struct htt_cmd_hdr)];
74 * but the host shall use the bit-mast + bit-shift defs, to be endian-
176 * htt_data_tx_desc - used for data tx path
179 * ext_tid: for qos-data frames (0-15), see %HTT_DATA_TX_EXT_TID_
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/linux/mm/
H A Dcompaction.c1 // SPDX-License-Identifier: GPL-2.0
9 * Copyright IBM Corp. 2007-2010 Mel Gorman <mel@csn.ul.ie>
17 #include <linux/backing-dev.h>
20 #include <linux/page-isolation.h>
46 * order == -1 is expected when compacting proactively via
53 return order == -1; in is_via_compact_memory()
71 * Page order with-respect-to which proactive compaction
80 #define COMPACTION_HPAGE_ORDER (PMD_SHIFT - PAGE_SHIFT)
102 list_del(&page->lru); in release_free_list()
128 zone->compact_considered = 0; in defer_compaction()
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