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/Linux-v6.1/Documentation/devicetree/bindings/i2c/
Di2c-arb-gpio-challenge.txt1 GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
7 the standard I2C multi-master rules. Using GPIOs is generally useful in
21 others can see. These are all active low with pull-ups enabled. We'll
24 - OUR_CLAIM: output from us signaling to other hosts that we want the bus
25 - THEIR_CLAIMS: output from others signaling that they want the bus
33 2. Waits a little bit for the other sides to notice (slew time, say 10
39 6. Go back to 1 (until retry time has expired).
43 - compatible: i2c-arb-gpio-challenge
44 - our-claim-gpio: The GPIO that we use to claim the bus.
45 - their-claim-gpios: The GPIOs that the other sides use to claim the bus.
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/Linux-v6.1/drivers/iio/dac/
Dad5758.c1 // SPDX-License-Identifier: GPL-2.0
101 * struct ad5758_state - driver instance specific data
107 * @dc_dc_ilim: variable which stores the dc-to-dc converter current limit
108 * @slew_time: variable which stores the target slew time
135 * 1101: -1 mA to +22 mA current range
160 { AD5758_RANGE_PLUSMINUS_5V, -5000000, 5000000 },
161 { AD5758_RANGE_PLUSMINUS_10V, -10000000, 10000000 }
168 { AD5758_RANGE_PLUSMINUS_20mA, -20000, 20000 },
169 { AD5758_RANGE_PLUSMINUS_24mA, -24000, 24000 },
170 { AD5758_RANGE_MINUS_1mA_PLUS_22mA, -1000, 22000 },
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/Linux-v6.1/Documentation/devicetree/bindings/iio/dac/
Dadi,ad5758.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <Michael.Hennerich@analog.com>
19 spi-cpha: true
21 adi,dc-dc-mode:
25 Mode of operation of the dc-to-dc converter
32 In this mode, the VDPC+ voltage is user-programmable to a fixed level
37 any one time.
47 adi,range-microvolt:
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/Linux-v6.1/arch/arm64/boot/dts/rockchip/
Drk3399-gru-chromebook.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Google Gru-Chromebook shared properties
8 #include "rk3399-gru.dtsi"
11 pp900_ap: pp900-ap {
12 compatible = "regulator-fixed";
13 regulator-name = "pp900_ap";
16 regulator-always-on;
17 regulator-boot-on;
18 regulator-min-microvolt = <900000>;
19 regulator-max-microvolt = <900000>;
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/Linux-v6.1/drivers/cpufreq/
Dpmac64-cpufreq.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org>
4 * and Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
30 #include <asm/time.h>
48 #define PCR_TARGET_TIME_MASK 0x00006000U /* target time */
73 * the various frequencies, retrieved from the device-tree
117 u32 slew, done = 0; in g5_vdnap_switch_volt() local
120 slew = (speed_mode == CPUFREQ_LOW) ? 1 : 0; in g5_vdnap_switch_volt()
122 args.u[0].p = &slew; in g5_vdnap_switch_volt()
350 int rc = -ENODEV; in g5_neo2_cpufreq_init()
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Dmaple-cpufreq.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2011 Dmitry Eremin-Solenikov
4 * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org>
5 * and Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
25 #include <linux/time.h>
42 #define PCR_TARGET_TIME_MASK 0x00006000U /* target time */
67 * the various frequencies, retrieved from the device-tree
164 int rc = -ENODEV; in maple_cpufreq_init()
189 /* Look for the powertune data in the device-tree */ in maple_cpufreq_init()
191 * On Maple this property is provided by PIBS in dual-processor config, in maple_cpufreq_init()
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/Linux-v6.1/Documentation/scsi/
Daic79xx.rst1 .. SPDX-License-Identifier: GPL-2.0
28 AIC-7901A Single Channel 64-bit PCI-X 133MHz to
30 AIC-7901B Single Channel 64-bit PCI-X 133MHz to
32 AIC-7902A4 Dual Channel 64-bit PCI-X 133MHz to
34 AIC-7902B Dual Channel 64-bit PCI-X 133MHz to
41 Adaptec SCSI Card 39320 Dual Channel 64-bit PCI-X 133MHz to 7902A4/7902B
43 68-pin, two internal 68-pin)
44 Adaptec SCSI Card 39320A Dual Channel 64-bit PCI-X 133MHz to 7902B
46 68-pin, two internal 68-pin)
47 Adaptec SCSI Card 39320D Dual Channel 64-bit PCI-X 133MHz to 7902A4
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/Linux-v6.1/arch/arm/boot/dts/
Dtegra30-asus-nexus7-grouper-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #include <dt-bindings/input/gpio-keys.h>
4 #include <dt-bindings/input/input.h>
5 #include <dt-bindings/power/summit,smb347-charger.h>
6 #include <dt-bindings/thermal/thermal.h>
9 #include "tegra30-cpu-opp.dtsi"
10 #include "tegra30-cpu-opp-microvolt.dtsi"
11 #include "tegra30-asus-lvds-display.dtsi"
27 * pre-existing /chosen node to be available to insert the
36 reserved-memory {
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Dtegra20-asus-tf101.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/atmel-maxtouch.h>
5 #include <dt-bindings/input/gpio-keys.h>
6 #include <dt-bindings/input/input.h>
7 #include <dt-bindings/thermal/thermal.h>
10 #include "tegra20-cpu-opp.dtsi"
11 #include "tegra20-cpu-opp-microvolt.dtsi"
16 chassis-type = "convertible";
33 * pre-existing /chosen node to be available to insert the
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Dtegra30-asus-transformer-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #include <dt-bindings/input/gpio-keys.h>
4 #include <dt-bindings/input/input.h>
5 #include <dt-bindings/thermal/thermal.h>
8 #include "tegra30-cpu-opp.dtsi"
9 #include "tegra30-cpu-opp-microvolt.dtsi"
12 chassis-type = "convertible";
31 * pre-existing /chosen node to be available to insert the
40 reserved-memory {
41 #address-cells = <1>;
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Dtegra20-acer-a500-picasso.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/atmel-maxtouch.h>
5 #include <dt-bindings/input/gpio-keys.h>
6 #include <dt-bindings/input/input.h>
7 #include <dt-bindings/thermal/thermal.h>
10 #include "tegra20-cpu-opp.dtsi"
11 #include "tegra20-cpu-opp-microvolt.dtsi"
32 * pre-existing /chosen node to be available to insert the
41 reserved-memory {
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Dtegra30-pegatron-chagall.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/gpio-keys.h>
5 #include <dt-bindings/input/input.h>
6 #include <dt-bindings/thermal/thermal.h>
9 #include "tegra30-cpu-opp.dtsi"
10 #include "tegra30-cpu-opp-microvolt.dtsi"
11 #include "tegra30-asus-lvds-display.dtsi"
16 chassis-type = "tablet";
35 * pre-existing /chosen node to be available to insert the
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Dtegra30-ouya.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/gpio-keys.h>
5 #include <dt-bindings/input/input.h>
6 #include <dt-bindings/thermal/thermal.h>
9 #include "tegra30-cpu-opp.dtsi"
10 #include "tegra30-cpu-opp-microvolt.dtsi"
26 stdout-path = "serial0:115200n8";
33 reserved-memory {
34 #address-cells = <1>;
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/Linux-v6.1/Documentation/virt/kvm/x86/
Dtimekeeping.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Timekeeping Virtualization for X86-Based Architectures
23 time introduces a new set of challenges because it introduces a multiplexed
24 division of time beyond the control of the guest CPU.
32 information relevant to KVM and hardware-based virtualization.
41 2.1. i8254 - PIT
42 ----------------
46 channels which can be programmed to deliver periodic or one-shot interrupts.
53 The PIT uses I/O ports 0x40 - 0x43. Access to the 16-bit counters is done
59 -------------- ----------------
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/Linux-v6.1/arch/arm/mach-omap2/
Dvc.c1 // SPDX-License-Identifier: GPL-2.0-only
19 #include "prm-regbits-34xx.h"
20 #include "prm-regbits-44xx.h"
52 * struct omap_vc_channel_cfg - describe the cfg_channel bitfield
101 * omap_vc_config_channel - configure VC channel to PMIC mappings
106 * - i2c slave address (SA)
107 * - voltage configuration address (RAV)
108 * - command configuration address (RAC) and enable bit (RACEN)
109 * - command values for ON, ONLP, RET and OFF (CMD)
112 * non-default channel. Starting with OMAP4, there are more than 2
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/Linux-v6.1/drivers/w1/masters/
Dds2490.c1 // SPDX-License-Identifier: GPL-2.0-or-later
92 #define ST_SPUA 0x01 /* Strong Pull-up is active */
172 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), in ds_send_control_cmd()
175 dev_err(&dev->udev->dev, in ds_send_control_cmd()
188 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), in ds_send_control_mode()
191 dev_err(&dev->udev->dev, in ds_send_control_mode()
204 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), in ds_send_control()
207 dev_err(&dev->udev->dev, in ds_send_control()
218 struct device *dev = &ds_dev->udev->dev; in ds_dump_status()
222 ds_dev->ep[EP_STATUS], count, count, buf); in ds_dump_status()
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/Linux-v6.1/Documentation/networking/
Drxrpc.rst1 .. SPDX-License-Identifier: GPL-2.0
7 The RxRPC protocol driver provides a reliable two-phase transport on top of UDP
38 RxRPC is a two-layer protocol. There is a session layer which provides
44 +-------------+
46 +-------------+
48 +-------------+
50 +-------------+
52 +-------------+
60 (2) A two-phase protocol. The client transmits a blob (the request) and then
82 to use - currently only PF_INET is supported.
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/Linux-v6.1/drivers/staging/media/atomisp/include/linux/
Datomisp.h1 /* SPDX-License-Identifier: GPL-2.0 */
49 * buffer has a per-frame parameter.
132 /* [gain] The strength of sharpness in pell-mell area. u5_11 */
303 * struct atomisp_cont_capture_conf - continuous capture parameters
312 * offset:-2
333 unsigned int gr; /* unsigned <integer_bits>.<16-integer_bits> */
334 unsigned int r; /* unsigned <integer_bits>.<16-integer_bits> */
335 unsigned int b; /* unsigned <integer_bits>.<16-integer_bits> */
336 unsigned int gb; /* unsigned <integer_bits>.<16-integer_bits> */
343 <13-fraction_bits>.<fraction_bits> */
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/Linux-v6.1/drivers/scsi/aic7xxx/
Daic79xx_osm.c6 * --------------------------------------------------------------------------
7 * Copyright (c) 1994-2000 Justin T. Gibbs.
8 * Copyright (c) 1997-1999 Doug Ledford
9 * Copyright (c) 2000-2003 Adaptec Inc.
23 * 3. Neither the names of the above-listed copyright holders nor the names
76 * To change the default number of tagged transactions allowed per-device,
83 * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
103 * attempt to slowly increase the depth over time as the device recovers
110 * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
118 * IDs 2, 5-7, and 9-15.
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Daic79xx.reg4 * Copyright (c) 1994-2001, 2004 Justin T. Gibbs.
5 * Copyright (c) 2000-2002 Adaptec Inc.
19 * 3. Neither the names of the above-listed copyright holders nor the names
62 if ((ahd->bugs & AHD_SET_MODE_BUG) != 0) { \
69 if ((ahd->bugs & AHD_SET_MODE_BUG) != 0) { \
76 if ((ahd->bugs & AHD_INTCOLLISION_BUG) != 0) { \
187 * A command with a non-zero
839 * PCI-X Control
2564 * SCSI I/O Cell Power-down Control
2607 * Data Transfer Negotiation Data - Period Byte
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/Linux-v6.1/fs/afs/
Ddir.c1 // SPDX-License-Identifier: GPL-2.0-or-later
112 struct address_space *mapping = req->vnode->netfs.inode.i_mapping; in afs_dir_read_cleanup()
114 pgoff_t last = req->nr_pages - 1; in afs_dir_read_cleanup()
116 XA_STATE(xas, &mapping->i_pages, 0); in afs_dir_read_cleanup()
118 if (unlikely(!req->nr_pages)) in afs_dir_read_cleanup()
145 * we must take care because the directory may change size under us. in afs_dir_check_folio()
151 size = min_t(loff_t, folio_size(folio), i_size - pos); in afs_dir_check_folio()
154 if (block->hdr.magic != AFS_DIR_MAGIC) { in afs_dir_check_folio()
156 __func__, dvnode->netfs.inode.i_ino, in afs_dir_check_folio()
157 pos, offset, size, ntohs(block->hdr.magic)); in afs_dir_check_folio()
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/Linux-v6.1/drivers/net/ethernet/sfc/
Dmcdi_pcol.h1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright 2009-2018 Solarflare Communications Inc.
5 * Copyright 2019-2020 Xilinx Inc.
13 /* Power-on reset state */
35 /* The 'doorbell' addresses are hard-wired to alert the MC when written */
38 /* The rest of these are firmware-defined */
46 /* Values to be written to the per-port status dword in shared
71 * | | \--- Response
72 * | \------- Error
73 * \------------------------------ Resync (always set)
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/Linux-v6.1/drivers/gpu/drm/i915/
Di915_reg.h18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
43 * registers that are defined solely for the use by function-like macros.
51 * should be defined using function-like macros.
57 * with underscore, followed by a function-like macro choosing the right
67 * function-like macros may be used to define bit fields, but do note that the
86 * Try to re-use existing register macro definitions. Only add new macros for
118 #define DISPLAY_MMIO_BASE(dev_priv) (INTEL_INFO(dev_priv)->display.mmio_offset)
122 * numbers, pick the 0-based __index'th value.
126 #define _PICK_EVEN(__index, __a, __b) ((__a) + (__index) * ((__b) - (__a)))
129 * Given the arbitrary numbers in varargs, pick the 0-based __index'th number.
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/Linux-v6.1/drivers/scsi/
Dadvansys.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * advansys.c - Linux Host Driver for AdvanSys SCSI Adapters
5 * Copyright (c) 1995-2000 Advanced System Products, Inc.
6 * Copyright (c) 2000-2001 ConnectCom Solutions, Inc.
34 #include <linux/dma-mapping.h>
109 #define ASC_CHIP_LATEST_VER_EISA ((ASC_CHIP_MIN_VER_EISA - 1) + 3)
125 * Narrow boards only support 12-byte commands, while wide boards
126 * extend to 16-byte commands.
391 #define ASC_IERR_BIST_PRE_TEST 0x0800 /* BIST pre-test error */
412 * is Ultra-capable or not. These tables let us convert from one to the other.
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