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/Linux-v5.15/drivers/media/rc/keymaps/
Drc-apac-viewcomp.c1 // SPDX-License-Identifier: GPL-2.0+
2 // apac-viewcomp.h - Keytable for apac_viewcomp Remote Controller
4 // keymap imported from ir-keymaps.c
8 #include <media/rc-map.h>
49 { 0x0c, KEY_KPPLUS }, /* fine tune >>>> */
50 { 0x18, KEY_KPMINUS }, /* fine tune <<<< */
Drc-winfast.c1 // SPDX-License-Identifier: GPL-2.0+
2 // winfast.h - Keytable for winfast Remote Controller
4 // keymap imported from ir-keymaps.c
8 #include <media/rc-map.h>
11 /* Table for Leadtek Winfast Remote Controls - used by both bttv and cx88 */
44 { 0x18, KEY_KPPLUS }, /* fine tune + , not on Y040052 */
45 { 0x19, KEY_KPMINUS }, /* fine tune - , not on Y040052 */
70 { 0x3a, KEY_VOLUMEDOWN }, /* MCE -VOL, on Y04G0033 */
72 { 0x3f, KEY_CHANNELDOWN } /* MCE -CH, on Y04G0033 */
/Linux-v5.15/drivers/net/ethernet/realtek/
Dr8169_phy_config.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * Copyright (c) 2003 - 2007 Francois Romieu <romieu@fr.zoreil.com>
63 while (len-- > 0) { in __rtl_writephy_batch()
64 __phy_write(phydev, regs->reg, regs->val); in __rtl_writephy_batch()
465 * Fine Tune Switching regulator parameter in rtl8168d_1_hw_phy_config()
501 /* Fine tune PLL performance */ in rtl8168d_1_hw_phy_config()
539 /* Fine tune PLL performance */ in rtl8168d_2_hw_phy_config()
621 /* Channel estimation fine tune */ in rtl8168e_1_hw_phy_config()
670 /* Channel estimation fine tune */ in rtl8168e_2_hw_phy_config()
678 /* For 4-corner performance improve */ in rtl8168e_2_hw_phy_config()
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/Linux-v5.15/Documentation/devicetree/bindings/memory-controllers/
Dnvidia,tegra20-mc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra20-mc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Osipenko <digetx@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12 - Thierry Reding <thierry.reding@gmail.com>
18 has a configurable arbitration algorithm to allow the user to fine-tune
27 const: nvidia,tegra20-mc-gart
31 - description: controller registers
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/Linux-v5.15/drivers/base/firmware_loader/
Dfallback.h1 /* SPDX-License-Identifier: GPL-2.0 */
11 * struct firmware_fallback_config - firmware fallback configuration settings
13 * Helps describe and fine tune the fallback mechanism.
74 return -ENOENT; in firmware_fallback_platform()
/Linux-v5.15/Documentation/devicetree/bindings/clock/
Dti,cdce925.txt6 [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
15 - compatible: Shall be one of the following:
16 - "ti,cdce913": 1-PLL, 3 Outputs
17 - "ti,cdce925": 2-PLL, 5 Outputs
18 - "ti,cdce937": 3-PLL, 7 Outputs
19 - "ti,cdce949": 4-PLL, 9 Outputs
20 - reg: I2C device address.
21 - clocks: Points to a fixed parent clock that provides the input frequency.
22 - #clock-cells: From common clock bindings: Shall be 1.
25 - xtal-load-pf: Crystal load-capacitor value to fine-tune performance on a
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/Linux-v5.15/arch/powerpc/platforms/ps3/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
26 defaults should be fine for most users, but these options may make
42 This option is only for experts who may have the desire to fine
43 tune the pagetable size on their system. The value here is
125 tristate "PS3 BD/DVD/CD-ROM Storage Driver"
131 This support is required to access the PS3 BD/DVD/CD-ROM drive.
/Linux-v5.15/Documentation/devicetree/bindings/phy/
Dapm-xgene-phy.txt1 * APM X-Gene 15Gbps Multi-purpose PHY nodes
3 PHY nodes are defined to describe on-chip 15Gbps Multi-purpose PHY. Each
7 - compatible : Shall be "apm,xgene-phy".
8 - reg : PHY memory resource is the SDS PHY access resource.
9 - #phy-cells : Shall be 1 as it expects one argument for setting
14 - status : Shall be "ok" if enabled or "disabled" if disabled.
16 - clocks : Reference to the clock entry.
17 - apm,tx-eye-tuning : Manual control to fine tune the capture of the serial
19 Two set of 3-tuple setting for each (up to 3)
22 - apm,tx-eye-direction : Eye tuning manual control direction. 0 means sample
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/Linux-v5.15/drivers/slimbus/
Dsched.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2011-2017, The Linux Foundation
10 * slim_ctrl_clk_pause() - Called by slimbus controller to enter/exit
17 * Slimbus specification needs this sequence to turn-off clocks for the bus.
20 * To exit clock-pause, controller typically wakes up active framer device.
23 * For entering clock-pause, -EBUSY is returned if a message txn in pending.
29 struct slim_sched *sched = &ctrl->sched; in slim_ctrl_clk_pause()
36 return -EINVAL; in slim_ctrl_clk_pause()
38 mutex_lock(&sched->m_reconf); in slim_ctrl_clk_pause()
40 if (sched->clk_state == SLIM_CLK_ACTIVE) { in slim_ctrl_clk_pause()
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/Linux-v5.15/include/drm/
Ddrm_mm.h3 * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA.
21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
31 * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
58 * enum drm_mm_insert_mode - control search and allocation behaviour
116 * Only check the first hole for suitablity and report -ENOSPC
127 * insert the node at the top of the hole or report -ENOSPC if
138 * insert the node at the bottom of the hole or report -ENOSPC if
147 * struct drm_mm_node - allocated block in the DRM allocator
150 * pre-reserved nodes inserted using drm_mm_reserve_node() the structure is
156 /** @color: Opaque driver-private tag. */
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/Linux-v5.15/drivers/iio/light/
Dacpi-als.c1 // SPDX-License-Identifier: GPL-2.0-or-later
9 * Copyright (C) 2012-2013 Martin Liska <marxin.liska@gmail.com>
12 * Copyright (C) 2013-2014 Marek Vasut <marex@denx.de>
29 #define ACPI_ALS_DEVICE_NAME "acpi-als"
73 * The _ALR property returns tables that can be used to fine-tune the values
90 status = acpi_evaluate_integer(als->device->handle, prop, NULL, in acpi_als_read_value()
94 acpi_evaluation_failure_warn(als->device->handle, prop, status); in acpi_als_read_value()
95 return -EIO; in acpi_als_read_value()
111 iio_trigger_poll_chained(als->trig); in acpi_als_notify()
115 dev_dbg(&device->dev, in acpi_als_notify()
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/Linux-v5.15/drivers/gpu/drm/bridge/
Dparade-ps8622.c1 // SPDX-License-Identifier: GPL-2.0-only
69 struct i2c_adapter *adap = client->adapter; in ps8622_set()
73 msg.addr = client->addr + page; in ps8622_set()
81 client->addr + page, reg, val, ret); in ps8622_set()
87 struct i2c_client *cl = ps8622->client; in ps8622_send_config()
111 * [3:2] CDR tune wait cycle before measure for fine tune in ps8622_send_config()
138 /* [7:5] DCO_FTRNG=+-40% */ in ps8622_send_config()
148 /* Gitune=-37% */ in ps8622_send_config()
168 /* [7:6] Right-bar GPIO output strength is 8mA */ in ps8622_send_config()
180 err = ps8622_set(cl, 0x01, 0x02, 0x80 | ps8622->max_lane_count); in ps8622_send_config()
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/Linux-v5.15/Documentation/devicetree/bindings/iio/adc/
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@st.com>
27 - st,stm32f4-adc-core
28 - st,stm32h7-adc-core
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/Linux-v5.15/Documentation/scheduler/
Dsched-design-CFS.rst15 an "ideal, precise multi-tasking CPU" on real hardware.
17 "Ideal multi-tasking CPU" is a (non-existent :-)) CPU that has 100% physical
20 each at 50% physical power --- i.e., actually in parallel.
25 multi-tasking CPU described above. In practice, the virtual runtime of a task
33 In CFS the virtual runtime is expressed and tracked via the per-task
34 p->se.vruntime (nanosec-unit) value. This way, it's possible to accurately
38 p->se.vruntime value --- i.e., tasks would execute simultaneously and no task
41 CFS's task picking logic is based on this p->se.vruntime value and it is thus
42 very simple: it always tries to run the task with the smallest p->se.vruntime
48 with a few add-on embellishments like nice levels, multiprocessing and various
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/Linux-v5.15/arch/sparc/kernel/
Dirq_32.c1 // SPDX-License-Identifier: GPL-2.0
12 * Copyright (C) 1998-2000 Anton Blanchard (anton@samba.org)
98 * 32-bit values in that case. Since this is similar to sparc64,
106 * We keep a map of per-PIL enable interrupts. These get wired
107 * up via the irq_chip->startup() method which gets invoked by
168 pil = p->pil; in irq_link()
170 p->next = irq_map[pil]; in irq_link()
186 BUG_ON(p->pil >= SUN4D_MAX_IRQ); in irq_unlink()
187 pnext = &irq_map[p->pil]; in irq_unlink()
189 pnext = &(*pnext)->next; in irq_unlink()
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/Linux-v5.15/Documentation/RCU/
Dstallwarn.rst1 .. SPDX-License-Identifier: GPL-2.0
9 options that can be used to fine-tune the detector's operation. Finally,
20 - A CPU looping in an RCU read-side critical section.
22 - A CPU looping with interrupts disabled.
24 - A CPU looping with preemption disabled.
26 - A CPU looping with bottom halves disabled.
28 - For !CONFIG_PREEMPTION kernels, a CPU looping anywhere in the kernel
33 - Booting Linux using a console connection that is too slow to
34 keep up with the boot-time console-message rate. For example,
36 with boot-time message rates, and will frequently result in
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/Linux-v5.15/drivers/net/ethernet/stmicro/stmmac/
Ddwmac-mediatek.c1 // SPDX-License-Identifier: GPL-2.0
83 int rmii_clk_from_mac = plat->rmii_clk_from_mac ? RMII_CLK_SRC_INTERNAL : 0; in mt2712_set_interface()
84 int rmii_rxc = plat->rmii_rxc ? RMII_CLK_SRC_RXC : 0; in mt2712_set_interface()
91 * configured, equals to (plat->variant->num_clks - 1) in default for all the case, in mt2712_set_interface()
94 plat->num_clks_to_config = plat->variant->num_clks - 1; in mt2712_set_interface()
97 switch (plat->phy_mode) { in mt2712_set_interface()
102 if (plat->rmii_clk_from_mac) in mt2712_set_interface()
103 plat->num_clks_to_config++; in mt2712_set_interface()
113 dev_err(plat->dev, "phy interface not supported\n"); in mt2712_set_interface()
114 return -EINVAL; in mt2712_set_interface()
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/Linux-v5.15/drivers/atm/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
36 chipset such as the Speedstream 3010 and the ENI-25p. The
38 have the code to drive the on-board Alcatel DSL chipset (yet).
46 2MB on-board RAM (Efficient calls them "C" and "S", respectively),
48 The driver works with MMF (-MF or ...F) and UTP-5 (-U5 or ...D)
65 bool "Fine-tune burst settings"
69 multiple words of data per PCI bus access cycle. Such a multi-word
163 Driver for the ZeitNet ZN1221 (MMF) and ZN1225 (UTP-5) 155 Mbps ATM
194 Support for the S-UNI and compatible PHYsical layer chips. These are
199 need that capability don't include S-UNI support (it's not needed to
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/Linux-v5.15/drivers/gpu/drm/
Ddrm_mm.c21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
37 * an RB-tree is used instead. At least if we expect heavy fragmentation.
42 * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
88 * Two behaviors are supported for searching and allocating: bottom-up and
89 * top-down. The default is bottom-up. Top-down allocation can be used if the
95 * Note that this range allocator is not thread-safe, drivers need to protect
115 node->stack = stack_depot_save(entries, n, GFP_NOWAIT); in save_stack()
130 if (!node->stack) { in show_leaks()
132 node->start, node->size); in show_leaks()
136 nr_entries = stack_depot_fetch(node->stack, &entries); in show_leaks()
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/Linux-v5.15/drivers/media/dvb-core/
Ddvb_frontend.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 1999-2001 Ralph Metzler
53 …e_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
57 MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-fronten…
78 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
136 struct dvb_frontend_private *fepriv = fe->frontend_priv; in __dvb_frontend_free()
139 dvb_free_device(fepriv->dvbdev); in __dvb_frontend_free()
141 dvb_frontend_invoke_release(fe, fe->ops.release); in __dvb_frontend_free()
157 if (fe->ops.detach) in dvb_frontend_put()
158 fe->ops.detach(fe); in dvb_frontend_put()
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/Linux-v5.15/Documentation/scsi/
DChangeLog.sym53c8xx1 Sat May 12 12:00 2001 Gerard Roudier (groudier@club-internet.fr)
2 * version sym53c8xx-1.7.3c
3 - Ensure LEDC bit in GPCNTL is cleared when reading the NVRAM.
4 Fix sent by Stig Telfer <stig@api-networks.com>.
5 - Backport from SYM-2 the work-around that allows to support
7 - Check that we received at least 8 bytes of INQUIRY response
9 - Define scsi_set_pci_device() as nil for kernel < 2.4.4.
10 - + A couple of minor changes.
12 Sat Apr 7 19:30 2001 Gerard Roudier (groudier@club-internet.fr)
13 * version sym53c8xx-1.7.3b
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/Linux-v5.15/drivers/net/wireless/broadcom/b43/
Dphy_lp.h1 /* SPDX-License-Identifier: GPL-2.0 */
5 /* Definitions for the LP-PHY */
214 #define B43_LPPHY_MAX_SMPL_COARSE_FINE_ADDR B43_PHY_OFDM(0x7F) /* Max Sample Coarse/Fine Address */
330 #define B2062_N_LGENA_TUNE0 B43_LP_NORTH(0x01E) /* LGENA Tune 0 (north) */
331 #define B2062_N_LGENA_TUNE1 B43_LP_NORTH(0x01F) /* LGENA Tune 1 (north) */
332 #define B2062_N_LGENA_TUNE2 B43_LP_NORTH(0x020) /* LGENA Tune 2 (north) */
333 #define B2062_N_LGENA_TUNE3 B43_LP_NORTH(0x021) /* LGENA Tune 3 (north) */
382 #define B2062_N_TX_TUNE B43_LP_NORTH(0x052) /* TX Tune (north) */
/Linux-v5.15/drivers/hwmon/
Dmax6650.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * max6650.c - Part of lm_sensors, Linux kernel modules for hardware
18 * http://pdfserv.maxim-ic.com/en/ds/MAX6650-MAX6651.pdf
27 #include <linux/hwmon-sysfs.h>
91 /* Minimum and maximum values of the FAN-RPM */
143 * Useful range for dac is 0-180 for 12V fans and 0-76 for 5V fans. in dac_to_pwm()
146 return clamp_val(255 - (255 * dac) / DAC_LIMIT(v12), 0, 255); in dac_to_pwm()
153 return limit - (limit * pwm) / 255; in pwm_to_dac()
159 struct i2c_client *client = data->client; in max6650_update_device()
163 mutex_lock(&data->update_lock); in max6650_update_device()
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/Linux-v5.15/Documentation/admin-guide/pm/
Dcpufreq.rst1 .. SPDX-License-Identifier: GPL-2.0
20 Operating Performance Points or P-states (in ACPI terminology). As a rule,
24 time (or the more power is drawn) by the CPU in the given P-state. Therefore
29 as possible and then there is no reason to use any P-states different from the
30 highest one (i.e. the highest-performance frequency/voltage configuration
38 put into different P-states.
41 capacity, so as to decide which P-states to put the CPUs into. Of course, since
64 information on the available P-states (or P-state ranges in some cases) and
65 access platform-specific hardware interfaces to change CPU P-states as requested
70 performance scaling algorithms for P-state selection can be represented in a
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/Linux-v5.15/Documentation/process/
Dhowto.rst6 This is the be-all, end-all document on this topic. It contains
18 ------------
27 The kernel is written mostly in C, with some architecture-dependent
30 you plan to do low-level development for that architecture. Though they
34 - "The C Programming Language" by Kernighan and Ritchie [Prentice Hall]
35 - "Practical C Programming" by Steve Oualline [O'Reilly]
36 - "C: A Reference Manual" by Harbison and Steele [Prentice Hall]
60 ------------
65 described in :ref:`Documentation/process/license-rules.rst <kernel_licensing>`.
72 https://www.gnu.org/licenses/gpl-faq.html
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