| /Linux-v5.15/arch/arm/nwfpe/ |
| D | softfloat-specialize | 5 This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
11 National Science Foundation under grant MIP-9311980. The original version
12 of this code was written as part of a project to build a fixed-point vector
16 http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
33 -------------------------------------------------------------------------------
34 Underflow tininess-detection mode, statically initialized to default value.
36 -------------------------------------------------------------------------------
41 -------------------------------------------------------------------------------
42 Raises the exceptions specified by `flags'. Floating-point traps can be
48 Moved this function out of softfloat-specialize into fpmodule.c.
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| D | softfloat.c | 4 This C source file is part of the SoftFloat IEC/IEEE Floating-point
10 National Science Foundation under grant MIP-9311980. The original version
11 of this code was written as part of a project to build a fixed-point vector
15 http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
38 -------------------------------------------------------------------------------
39 Primitive arithmetic functions, including multi-word arithmetic, and
42 -------------------------------------------------------------------------------
44 #include "softfloat-macros"
47 -------------------------------------------------------------------------------
52 are propagated from function inputs to output. These details are target-
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| D | softfloat.h | 5 This C header file is part of the SoftFloat IEC/IEEE Floating-point
11 National Science Foundation under grant MIP-9311980. The original version
12 of this code was written as part of a project to build a fixed-point vector
16 http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
37 -------------------------------------------------------------------------------
38 The macro `FLOATX80' must be defined to enable the extended double-precision
39 floating-point format `floatx80'. If this macro is not defined, the
42 -------------------------------------------------------------------------------
49 -------------------------------------------------------------------------------
50 Software IEC/IEEE floating-point types.
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| /Linux-v5.15/Documentation/timers/ |
| D | hrtimers.rst | 2 hrtimers - subsystem for high-resolution kernel timers
5 This patch introduces a new subsystem for high-resolution kernel timers.
9 back and forth trying to integrate high-resolution and high-precision
11 such high-resolution timer implementations in practice, we came to the
18 - the forced handling of low-resolution and high-resolution timers in
21 32-bitness assumptions, and has been honed and micro-optimized for a
23 for many years - and thus even small extensions to it easily break
26 current usage - but it is simply not suitable to be extended for
27 high-res timers.
29 - the unpredictable [O(N)] overhead of cascading leads to delays which
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| D | hpet.rst | 2 High Precision Event Timer Driver for Linux
5 The High Precision Event Timer (HPET) hardware follows a specification
8 Each HPET has one fixed-rate counter (at 10+ MHz, hence "High Precision")
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| /Linux-v5.15/Documentation/devicetree/bindings/hwmon/ |
| D | sensirion,shtc1.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Christopher Ruehl chris.ruehl@gtsys.com.hk
14 designed especially for battery-driven high-volume consumer electronics
24 - sensirion,shtc1
25 - sensirion,shtw1
26 - sensirion,shtc3
31 sensirion,blocking-io:
36 sensirion,low-precision:
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| D | adi,ltc2947.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices LTC2947 high precision power and energy monitor
10 - Nuno Sá <nuno.sa@analog.com>
13 Analog Devices LTC2947 high precision power and energy monitor over SPI or I2C.
15 https://www.analog.com/media/en/technical-documentation/data-sheets/LTC2947.pdf
20 - adi,ltc2947
33 adi,accumulator-ctl-pol:
41 $ref: /schemas/types.yaml#/definitions/uint32-array
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| D | maxim,max20730.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Jean Delvare <jdelvare@suse.com>
12 - Guenter Roeck <linux@roeck-us.net>
17 up to 25A (max) load. This single-chip regulator provides extremely
18 compact, high efficiency power-delivery solutions with high-precision
29 - maxim,max20730
30 - maxim,max20734
31 - maxim,max20743
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| /Linux-v5.15/drivers/firmware/efi/libstub/ |
| D | vsprintf.c | 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* -*- linux-c -*- ------------------------------------------------------- *
5 * Copyright 2007 rPath, Inc. - All Rights Reserved
7 * ----------------------------------------------------------------------- */
10 * Oh, it's a waste of space, but oh-so-yummy for debugging.
28 i = i * 10 + *((*s)++) - '0'; in skip_atoi()
44 *--end = '0' + (r - q * 10); in put_dec_full4()
47 *--end = '0' + r; in put_dec_full4()
57 * (second call in the put_dec code, assuming n is all-ones).
64 put_dec_full4(end, x - q * 10000); in put_dec_helper4()
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| /Linux-v5.15/Documentation/devicetree/bindings/ptp/ |
| D | ptp-qoriq.txt | 5 - compatible Should be "fsl,etsec-ptp" for eTSEC
6 Should be "fsl,fman-ptp-timer" for DPAA FMan
7 Should be "fsl,dpaa2-ptp" for DPAA2
8 Should be "fsl,enetc-ptp" for ENETC
9 - reg Offset and length of the register set for the device
10 - interrupts There should be at least two interrupts. Some devices
15 - fsl,cksel Timer reference clock source.
16 - fsl,tclk-period Timer reference clock period in nanoseconds.
17 - fsl,tmr-prsc Prescaler, divides the output clock.
18 - fsl,tmr-add Frequency compensation value.
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| /Linux-v5.15/drivers/iio/gyro/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
17 tristate "Analog Devices ADIS16130 High Precision Angular Rate Sensor driver"
20 Say yes here to build support for Analog Devices ADIS16130 High Precision
45 tristate "Analog Devices ADXRS290 Dual-Axis MEMS Gyroscope SPI driver"
74 Say yes here to build support for BOSCH BMG160 Tri-axis Gyro Sensor
97 Say yes here to build support for NXP FXAS21002C Tri-axis Gyro
137 inv-mpu3050-i2c.
140 tristate "STMicroelectronics gyroscopes 3-Axis Driver"
152 - st_gyro (core functions for the driver [it is mandatory]);
153 - st_gyro_i2c (necessary for the I2C devices [optional*]);
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| D | adis16130.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * ADIS16130 Digital Output, High Precision Angular Rate Sensor driver
21 /* 1 = data-ready signal low when unread data on all channels; */
33 #define ADIS16130_MODE_24BIT (1 << 1) /* 1 = 24-bit resolution; */
36 * struct adis16130_state - device instance specific data
52 .tx_buf = st->buf, in adis16130_spi_read()
53 .rx_buf = st->buf, in adis16130_spi_read()
57 mutex_lock(&st->buf_lock); in adis16130_spi_read()
59 st->buf[0] = ADIS16130_CON_RD | reg_addr; in adis16130_spi_read()
60 st->buf[1] = st->buf[2] = st->buf[3] = 0; in adis16130_spi_read()
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| /Linux-v5.15/drivers/input/mouse/ |
| D | elan_i2c.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
10 * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
11 * copyright (c) 2011-2012 Google, Inc.
34 #define ETP_REPORT_ID2 0x60 /* High precision report */
40 #define ETP_MK_DATA_OFFSET 33 /* For high precision reports */
|
| /Linux-v5.15/Documentation/devicetree/bindings/leds/ |
| D | leds-lp8860.txt | 1 * Texas Instruments - lp8860 4-Channel LED Driver
3 The LP8860-Q1 is an high-efficiency LED
4 driver with boost controller. It has 4 high-precision
9 - compatible :
11 - reg : I2C slave address
12 - #address-cells : 1
13 - #size-cells : 0
16 - enable-gpios : gpio pin to enable (active high)/disable the device.
17 - vled-supply : LED supply
20 - reg : 0
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| /Linux-v5.15/Documentation/devicetree/bindings/x86/ |
| D | timer.txt | 2 ------
4 * High Precision Event Timer (HPET)
6 compatible = "intel,ce4100-hpet";
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| /Linux-v5.15/Documentation/hwmon/ |
| D | ltc2947.rst | 1 Kernel drivers ltc2947-i2c and ltc2947-spi
10 Addresses scanned: -
14 https://www.analog.com/media/en/technical-documentation/data-sheets/LTC2947.pdf
21 The LTC2947 is a high precision power and energy monitor that measures current,
37 The following attributes are supported. Limits are read-write, reset_history
38 is write-only and all the other attributes are read-only.
41 in0_input VP-VM voltage (mV).
49 in0_label Channel label (VP-VM)
61 curr1_input IP-IM Sense current (mA)
69 curr1_label Channel label (IP-IM)
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| /Linux-v5.15/arch/m68k/fpsp040/ |
| D | round.S | 21 | round --- round result according to precision/mode
24 | d1(high word) contains rounding precision:
36 | a0 is preserved and the g-r-s bits in d0 are cleared.
37 | The result is not typed - the tag field is invalid. The
41 | inexact (i.e. if any of the g-r-s bits were set).
50 | :rounding precision and sets
51 | ;the appropriate g-r-s bits.
117 asll #1,%d0 |shift g-bit to c-bit
124 | ext_grs --- extract guard, round and sticky bits
130 | selected rounding precision. It is called by the round subroutine
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| /Linux-v5.15/Documentation/devicetree/bindings/regulator/ |
| D | mcp16502-regulator.txt | 4 - compatible: "microchip,mcp16502"
5 - reg: I2C slave address
6 - lpm-gpios: GPIO for LPM pin. Note that this GPIO *must* remain high during
7 suspend-to-ram, keeping the PMIC into HIBERNATE mode; this
9 - regulators: A node that houses a sub-node for each regulator within
10 the device. Each sub-node is identified using the node's
11 name. The content of each sub-node is defined by the
15 1) VDD_IO - Buck (1.2 - 3.7 V)
16 2) VDD_DDR - Buck (0.6 - 1.85 V)
17 3) VDD_CORE - Buck (0.6 - 1.85 V)
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| /Linux-v5.15/arch/mips/math-emu/ |
| D | dp_mul.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * double precision: common utilities
7 * Copyright (C) 1994-2000 Algorithmics Ltd.
112 xm <<= 64 - (DP_FBITS + 1); in ieee754dp_mul()
113 ym <<= 64 - (DP_FBITS + 1); in ieee754dp_mul()
116 * Multiply 64 bits xm, ym to give high 64 bits rm with stickness. in ieee754dp_mul()
146 * Sticky shift down to normal rounding precision. in ieee754dp_mul()
149 rm = (rm >> (64 - (DP_FBITS + 1 + 3))) | in ieee754dp_mul()
153 rm = (rm >> (64 - (DP_FBITS + 1 + 3 + 1))) | in ieee754dp_mul()
|
| D | sp_mul.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * single precision
7 * Copyright (C) 1994-2000 Algorithmics Ltd.
112 xm <<= 32 - (SP_FBITS + 1); in ieee754sp_mul()
113 ym <<= 32 - (SP_FBITS + 1); in ieee754sp_mul()
116 * Multiply 32 bits xm, ym to give high 32 bits rm with stickness. in ieee754sp_mul()
141 * Sticky shift down to normal rounding precision. in ieee754sp_mul()
144 rm = (rm >> (32 - (SP_FBITS + 1 + 3))) | in ieee754sp_mul()
148 rm = (rm >> (32 - (SP_FBITS + 1 + 3 + 1))) | in ieee754sp_mul()
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| /Linux-v5.15/drivers/pps/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
10 antennae. Userland can use it to get a high-precision time
36 This option adds support for direct in-kernel time
|
| /Linux-v5.15/drivers/hwmon/ |
| D | ltc2947-i2c.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Analog Devices LTC2947 high precision power and energy monitor over I2C
26 return ltc2947_core_probe(map, i2c->name); in ltc2947_probe()
|
| D | ltc2947-spi.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Analog Devices LTC2947 high precision power and energy monitor over SPI
28 return ltc2947_core_probe(map, spi_get_device_id(spi)->name); in ltc2947_probe()
|
| /Linux-v5.15/arch/m68k/math-emu/ |
| D | fp_util.S | 23 * the restrictions contained in a BSD-style copyright.)
63 tst.l (TASK_MM-8,%a2)
65 tst.l (TASK_MM-4,%a2)
69 1: printf ,"oops:%p,%p,%p\n",3,%a2@(TASK_MM-8),%a2@(TASK_MM-4),%a2@(TASK_MM)
94 | args: %d0 = source (32-bit long)
98 printf PCONV,"l2e: %p -> %p(",2,%d0,%a0
125 | args: %d0 = source (single-precision fp value)
129 printf PCONV,"s2e: %p -> %p(",2,%d0,%a0
139 add.w #0x3fff-0x7f,%d1 | re-bias the exponent.
141 move.l %d0,(%a0)+ | high lword of fp_ext.mant
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| /Linux-v5.15/drivers/media/v4l2-core/ |
| D | v4l2-jpeg.c | 1 // SPDX-License-Identifier: GPL-2.0-only
7 * For reference, see JPEG ITU-T.81 (ISO/IEC 10918-1) [1]
9 * [1] https://www.w3.org/Graphics/JPEG/itu-t81.pdf
17 #include <media/v4l2-jpeg.h>
23 /* Table B.1 - Marker code assignments */
56 * struct jpeg_stream - JPEG byte stream
68 if (stream->curr >= stream->end) in jpeg_get_byte()
69 return -EINVAL; in jpeg_get_byte()
71 return *stream->curr++; in jpeg_get_byte()
79 if (stream->curr + sizeof(__be16) > stream->end) in jpeg_get_word_be()
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