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/linux/drivers/hwmon/pmbus/
H A Dmp2856.c1 // SPDX-License-Identifier: GPL-2.0-or-later
79 bool negative = false; in val2linear11() local
85 negative = true; in val2linear11()
86 val = -val; in val2linear11()
95 while (val < MIN_LIN_MANTISSA && exponent > -15) { in val2linear11()
96 exponent--; in val2linear11()
100 /* Convert mantissa from milli-units to units */ in val2linear11()
104 if (negative) in val2linear11()
105 mantissa = -mantissa; in val2linear11()
112 mp2856_read_word_helper(struct i2c_client *client, int page, int phase, u8 reg, in mp2856_read_word_helper() argument
[all …]
H A Dmp2975.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Hardware monitoring driver for MPS Multi-phase Digital VR Controllers
138 return -ENODATA; in mp2975_read_byte_data()
143 mp2975_read_word_helper(struct i2c_client *client, int page, int phase, u8 reg, in mp2975_read_word_helper() argument
146 int ret = pmbus_read_word_data(client, page, phase, reg); in mp2975_read_word_helper()
157 return 250 + (val - 1) * 5; in mp2975_vid2direct()
161 return 500 + (val - 1) * 10; in mp2975_vid2direct()
165 return 200 + (val - 1) * 10; in mp2975_vid2direct()
168 return -EINVAL; in mp2975_vid2direct()
176 /* Converts a milli-unit DIRECT value to LINEAR11 format */
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H A Dzl6100.c1 // SPDX-License-Identifier: GPL-2.0-or-later
57 /* Convert linear sensor value to milli-units */
69 /* scale result to milli-units */ in zl6100_l2d()
75 val >>= -exponent; in zl6100_l2d()
86 bool negative = false; in zl6100_d2l() local
93 negative = true; in zl6100_d2l()
94 val = -val; in zl6100_d2l()
103 while (val < MIN_MANTISSA && exponent > -15) { in zl6100_d2l()
104 exponent--; in zl6100_d2l()
108 /* Convert mantissa from milli-units to units */ in zl6100_d2l()
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H A Dpmbus_core.c1 // SPDX-License-Identifier: GPL-2.0-or-later
19 #include <linux/hwmon-sysfs.h>
34 static int wp = -1;
42 u8 phase; /* phase number, 0xff for all phases */ member
48 Negative if there was a read error */
112 s16 currpage; /* current page, -1 for unknown/unset */
113 s16 currphase; /* current phase, 0xff for all, -1 for unknown/unset */
153 for (sensor = data->sensors; sensor; sensor = sensor->next) in pmbus_clear_cache()
154 sensor->data = -ENODATA; in pmbus_clear_cache()
163 for (sensor = data->sensors; sensor; sensor = sensor->next) in pmbus_set_update()
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/linux/drivers/base/power/
H A Dcommon.c1 // SPDX-License-Identifier: GPL-2.0
3 * drivers/base/power/common.c - Common device power management code.
19 * dev_pm_get_subsys_data - Create or refcount power.subsys_data for device.
24 * increased, otherwise negative error code.
32 return -ENOMEM; in dev_pm_get_subsys_data()
34 spin_lock_irq(&dev->power.lock); in dev_pm_get_subsys_data()
36 if (dev->power.subsys_data) { in dev_pm_get_subsys_data()
37 dev->power.subsys_data->refcount++; in dev_pm_get_subsys_data()
39 spin_lock_init(&psd->lock); in dev_pm_get_subsys_data()
40 psd->refcount = 1; in dev_pm_get_subsys_data()
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/linux/Documentation/ABI/testing/
H A Dsysfs-bus-iio-frequency-admv10131 What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0-1_i_calibphase
3 Contact: linux-iio@vger.kernel.org
5 Read/write unscaled value for the Local Oscillatior path quadrature I phase shift.
7 What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0-1_q_calibphase
9 Contact: linux-iio@vger.kernel.org
11 Read/write unscaled value for the Local Oscillatior path quadrature Q phase shift.
15 Contact: linux-iio@vger.kernel.org
22 Contact: linux-iio@vger.kernel.org
28 Contact: linux-iio@vger.kernel.org
30 Read/write raw value for the Local Oscillatior Feedthrough Offset Calibration I Negative
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/linux/Documentation/devicetree/bindings/timer/
H A Drenesas,rz-mtu3.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/timer/renesas,rz-mtu3.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas RZ/G2L Multi-Function Timer Pulse Unit 3 (MTU3a)
10 - Biju Das <biju.das.jz@bp.renesas.com>
13 This hardware block consists of eight 16-bit timer channels and one
14 32-bit timer channel. It supports the following specifications:
15 - Pulse input/output: 28 lines max
16 - Pulse input 3 lines
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/linux/drivers/base/regmap/
H A Dregmap-sccb.c1 // SPDX-License-Identifier: GPL-2.0
2 // Register map access API - SCCB support
11 * sccb_is_available - Check if the adapter supports SCCB protocol
31 * regmap_sccb_read - Read data from SCCB slave device
36 * This executes the 2-phase write transmission cycle that is followed by a
37 * 2-phase read transmission cycle, returning negative errno else zero on
47 i2c_lock_bus(i2c->adapter, I2C_LOCK_SEGMENT); in regmap_sccb_read()
49 ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, in regmap_sccb_read()
54 ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, in regmap_sccb_read()
61 i2c_unlock_bus(i2c->adapter, I2C_LOCK_SEGMENT); in regmap_sccb_read()
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/linux/drivers/net/ethernet/amazon/ena/
H A Dena_com.h1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
3 * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
11 #include <linux/dma-mapping.h>
136 u8 phase; member
179 u8 phase; member
190 u8 phase; member
201 u8 phase; member
244 u8 phase; member
374 /* ena_com_mmio_reg_read_request_init - Init the mmio reg read mechanism
381 * @return - 0 on success, negative value on failure.
[all …]
/linux/drivers/net/ethernet/intel/ice/
H A Dice_dpll.c1 // SPDX-License-Identifier: GPL-2.0
16 * enum ice_dpll_pin_type - enumerate ice pin types:
32 [ICE_DPLL_PIN_TYPE_RCLK_INPUT] = "rclk-input",
40 * ice_dpll_is_reset - check if reset is in progress
47 * * false - no reset in progress
48 * * true - reset in progress
52 if (ice_is_reset_in_progress(pf->state)) { in ice_dpll_is_reset()
60 * ice_dpll_pin_freq_set - set pin's frequency
69 * Context: Called under pf->dplls.lock
71 * * 0 - success
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/linux/drivers/staging/sm750fb/
H A Dddk750_mode.h1 /* SPDX-License-Identifier: GPL-2.0 */
9 NEG, /* negative */
32 /* Clock Phase. This clock phase only applies to Panel. */
/linux/drivers/infiniband/hw/efa/
H A Defa_com.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
3 * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
74 struct efa_com_mmio_read *mmio_read = &edev->mmio_read; in efa_com_reg_read32()
80 read_resp = mmio_read->read_resp; in efa_com_reg_read32()
82 spin_lock(&mmio_read->lock); in efa_com_reg_read32()
83 mmio_read->seq_num++; in efa_com_reg_read32()
86 read_resp->req_id = mmio_read->seq_num + 0x9aL; in efa_com_reg_read32()
89 mmio_read->seq_num); in efa_com_reg_read32()
91 writel(mmio_read_reg, edev->reg_bar + EFA_REGS_MMIO_REG_READ_OFF); in efa_com_reg_read32()
93 exp_time = jiffies + usecs_to_jiffies(mmio_read->mmio_read_timeout); in efa_com_reg_read32()
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/linux/drivers/gpu/drm/i915/gvt/
H A Dedid.c2 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
56 struct intel_vgpu_i2c_edid *edid = &vgpu->display.i2c_edid; in edid_get_byte()
59 if (edid->state == I2C_NOT_SPECIFIED || !edid->target_selected) { in edid_get_byte()
63 if (edid->current_edid_read >= EDID_SIZE) { in edid_get_byte()
68 if (!edid->edid_available) { in edid_get_byte()
73 if (intel_vgpu_has_monitor_on_port(vgpu, edid->port)) { in edid_get_byte()
75 intel_vgpu_port(vgpu, edid->port)->edid; in edid_get_byte()
77 chr = edid_data->edid_block[edid->current_edid_read]; in edid_get_byte()
78 edid->current_edid_read++; in edid_get_byte()
88 int port = -EINVAL; in cnp_get_port_from_gmbus0()
[all …]
/linux/Documentation/devicetree/bindings/iio/frequency/
H A Dadi,adf4350.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>
15 - adi,adf4350
16 - adi,adf4351
21 spi-max-frequency:
28 clock-names:
31 '#clock-cells':
34 clock-output-names:
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H A Dadi,admv1013.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Antoniu Miclaus <antoniu.miclaus@analog.com>
21 - adi,admv1013
26 spi-max-frequency:
34 clock-names:
36 - const: lo_in
38 vcm-supply:
42 vcc-drv-supply:
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H A Dadi,admv1014.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Antoniu Miclaus <antoniu.miclaus@analog.com>
21 - adi,admv1014
26 spi-max-frequency:
32 clock-names:
34 - const: lo_in
38 vcm-supply:
40 Common-mode voltage regulator.
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/linux/fs/ubifs/
H A Dlog.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2006-2008 Nokia Corporation.
23 * ubifs_search_bud - search bud LEB.
24 * @c: UBIFS file-system description object
35 spin_lock(&c->buds_lock); in ubifs_search_bud()
36 p = c->buds.rb_node; in ubifs_search_bud()
39 if (lnum < bud->lnum) in ubifs_search_bud()
40 p = p->rb_left; in ubifs_search_bud()
41 else if (lnum > bud->lnum) in ubifs_search_bud()
42 p = p->rb_right; in ubifs_search_bud()
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/linux/include/uapi/linux/media/raspberrypi/
H A Dpisp_be_config.h1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
5 * Copyright (C) 2021 - Raspberry Pi Ltd
97 * struct pisp_be_global_config - PiSP global enable bitmaps
111 * struct pisp_be_input_buffer_config - PiSP Back End input buffer
120 * struct pisp_be_dpc_config - PiSP Back End DPC config
138 * struct pisp_be_geq_config - PiSP Back End GEQ config
150 #define PISP_BE_GEQ_SLOPE ((1 << 10) - 1)
158 * struct pisp_be_tdn_input_buffer_config - PiSP Back End TDN input buffer
167 * struct pisp_be_tdn_config - PiSP Back End TDN config
190 * struct pisp_be_tdn_output_buffer_config - PiSP Back End TDN output buffer
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/linux/include/drm/
H A Ddrm_modeset_helper_vtables.h3 * Copyright © 2007-2008 Dave Airlie
4 * Copyright © 2007-2008 Intel Corporation
6 * Copyright © 2011-2013 Intel Corporation
61 * struct drm_crtc_helper_funcs - helper operations for CRTCs
135 * Since this function is both called from the check phase of an atomic
137 * to look at anything else but the passed-in mode, and validate it
138 * against configuration-invariant hardware constraints. Any further
165 * This function is called in the check phase of atomic modesets, which
209 * 0 on success or a negative error code on failure.
241 * optimized fast-path instead of a full mode set operation with all the
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/linux/Documentation/RCU/
H A DwhatisRCU.rst3 What is RCU? -- "Read, Copy, Update"
21 …ries: Fundamentals https://www.linuxfoundation.org/webinars/unraveling-rcu-usage-mysteries
22 …Cases https://www.linuxfoundation.org/webinars/unraveling-rcu-usage-mysteries-additional-use-cases
28 during the 2.5 development effort that is optimized for read-mostly
47 :ref:`6. ANALOGY WITH READER-WRITER LOCKING <6_whatisRCU>`
67 everything, feel free to read the whole thing -- but if you are really
69 never need this document anyway. ;-)
74 ----------------
77 "reclamation" phases. The removal phase removes references to data items
80 The reason that it is safe to run the removal phase concurrently with
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/linux/drivers/isdn/hardware/mISDN/
H A Disdnhdlc.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * hdlc.h -- General purpose ISDN HDLC decoder.
10 * 2009 Karsten Keil <keil@b1-systems.de>
11 * 2002 Wolfgang Mües <wolfgang@iksw-muees.de>
39 /* set if in closing phase (need to send CRC + flag) */
53 or a negative error number
/linux/tools/lib/bpf/
H A Dlibbpf.h1 /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
6 * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
100 * @brief **libbpf_set_print()** sets user-provided log callback function to
108 * This function is thread-safe.
119 * - for object open from file, this will override setting object
121 * - for object open from memory buffer, this will specify an object
122 * name and will override default "<addr>-<buf-size>" name;
125 /* parse map definitions non-strictly, allowing extra attributes/data */
129 * auto-pinned to that path on load; defaults to "/sys/fs/bpf".
139 /* Path to the custom BTF to be used for BPF CO-RE relocations.
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/linux/drivers/gpu/drm/i915/display/
H A Dintel_tv_regs.h1 /* SPDX-License-Identifier: MIT */
41 /* Sets the colorburst to PAL mode. Required for non-M PAL modes. */
56 /* Read-only state that reports all features enabled */
58 /* Read-only state that reports that Macrovision is disabled in hardware*/
60 /* Read-only state that reports that TV-out is disabled in hardware. */
64 /* Encoder test pattern 1 - combo pattern */
66 /* Encoder test pattern 2 - full screen vertical 75% color bars */
68 /* Encoder test pattern 3 - full screen horizontal 75% color bars */
70 /* Encoder test pattern 4 - random noise */
72 /* Encoder test pattern 5 - linear color ramps */
[all …]
/linux/Documentation/driver-api/
H A Ddpll.rst1 .. SPDX-License-Identifier: GPL-2.0
10 PLL - Phase Locked Loop is an electronic circuit which syntonizes clock
14 DPLL - Digital Phase Locked Loop is an integrated circuit which in
15 addition to plain PLL behavior incorporates a digital phase detector
82 - ``DPLL_PIN_STATE_CONNECTED`` - the pin is used to drive dpll device
83 - ``DPLL_PIN_STATE_DISCONNECTED`` - the pin is not used to drive dpll
89 - ``DPLL_PIN_STATE_SELECTABLE`` - the pin shall be considered as valid
91 - ``DPLL_PIN_STATE_DISCONNECTED`` - the pin shall be not considered as
104 1) Set on a pin - the configuration affects all dpll devices pin is
106 2) Set on a pin-dpll tuple - the configuration affects only selected
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/linux/include/uapi/linux/
H A Dinput.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * Copyright (c) 1999-2002 Vojtech Pavlik
20 #include "input-event-codes.h"
56 * IOCTLs (0x00 - 0x7f)
67 * struct input_absinfo - used by EVIOCGABS/EVIOCSABS ioctls
103 * struct input_keymap_entry - used by EVIOCGKEYCODE/EVIOCSKEYCODE ioctls
104 * @scancode: scancode represented in machine-endian form.
148 * EVIOCGMTSLOTS(len) - get MT slot values
169 * If the request code is not an ABS_MT value, -EINVAL is returned.
190 * EVIOCGMASK - Retrieve current event mask
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