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/linux/Documentation/devicetree/bindings/display/panel/
H A Dsony,acx424akp.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
15 - Linus Walleij <linus.walleij@linaro.org>
18 - $ref: panel-common.yaml#
23 - sony,acx424akp
24 - sony,acx424akm
29 reset-gpios: true
30 vddi-supply:
32 enforce-video-mode: true
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/linux/Documentation/driver-api/
H A Ddevice_link.rst17 Secondly, the driver core by default does not enforce any driver presence
57 device ``->probe`` callback or a boot-time PCI quirk.
61 ``->probe`` callback while the supplier hasn't started to probe yet: Had the
65 non-presence. [Note that it is valid to create a link from the consumer's
66 ``->probe`` callback while the supplier is still probing, but the consumer must
72 is added in the ``->probe`` callback of the supplier or consumer driver, it is
73 typically deleted in its ``->remove`` callback for symmetry. That way, if the
87 link is added from the consumer's ``->probe`` callback: ``DL_FLAG_RPM_ACTIVE``
93 Similarly, when the device link is added from supplier's ``->probe`` callback,
125 :c:func:`device_link_add()` may cause the PM-runtime usage counter of the
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/linux/drivers/gpu/drm/xlnx/
H A Dzynqmp_kms.c1 // SPDX-License-Identifier: GPL-2.0
3 * ZynqMP DisplayPort Subsystem - KMS API
5 * Copyright (C) 2017 - 2021 Xilinx, Inc.
8 * - Hyun Woo Kwon <hyun.kwon@xilinx.com>
9 * - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
47 return container_of(drm, struct zynqmp_dpsub_drm, dev)->dpsub; in to_zynqmp_dpsub()
50 /* -----------------------------------------------------------------------------
61 if (!new_plane_state->crtc) in zynqmp_dpsub_plane_atomic_check()
64 crtc_state = drm_atomic_get_crtc_state(state, new_plane_state->crtc); in zynqmp_dpsub_plane_atomic_check()
80 struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(plane->dev); in zynqmp_dpsub_plane_atomic_disable()
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/linux/Documentation/userspace-api/media/v4l/
H A Dext-ctrls-camera.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _camera-controls:
13 .. _camera-control-id:
23 .. _v4l2-exposure-auto-type:
28 enum v4l2_exposure_auto_type -
37 .. flat-table::
38 :header-rows: 0
39 :stub-columns: 0
41 * - ``V4L2_EXPOSURE_AUTO``
42 - Automatic exposure time, automatic iris aperture.
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/linux/arch/x86/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
4 bool "64-bit kernel" if "$(ARCH)" = "x86"
7 Say yes to build a 64-bit kernel - formerly known as x86_64
8 Say no to build a 32-bit kernel - formerly known as i386
13 # Options that are inherently 32-bit kernel only:
26 # Options that are inherently 64-bit kernel only:
56 # ported to 32-bit as well. )
158 # Word-size accesses may read uninitialized data past the trailing \0
342 default "elf32-i386" if X86_32
343 default "elf64-x86-64" if X86_64
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/linux/Documentation/networking/
H A Dudplite.rst1 .. SPDX-License-Identifier: GPL-2.0
4 The UDP-Lite protocol (RFC 3828)
8 UDP-Lite is a Standards-Track IETF transport protocol whose characteristic
9 is a variable-length checksum. This has advantages for transport of multimedia
10 (video, VoIP) over wireless networks, as partly damaged packets can still be
14 For in-depth information, you can consult:
16 - The UDP-Lite Homepage:
17 http://web.archive.org/web/%2E/http://www.erg.abdn.ac.uk/users/gerrit/udp-lite/
21 - The UDP-Lite HOWTO on
22 …http://web.archive.org/web/%2E/http://www.erg.abdn.ac.uk/users/gerrit/udp-lite/files/UDP-Lite-HOWT…
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/linux/Documentation/admin-guide/
H A Dkernel-parameters.txt16 force -- enable ACPI if default was off
17 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
18 off -- disable ACPI if default was on
19 noirq -- do not use ACPI for IRQ routing
20 strict -- Be less tolerant of platforms that are not
22 rsdt -- prefer RSDT over (default) XSDT
23 copy_dsdt -- copy DSDT to memory
24 nocmcff -- Disable firmware first mode for corrected
28 nospcr -- disable console in ACPI SPCR table as
44 { vendor | video | native | none }
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/linux/drivers/gpu/drm/amd/amdgpu/
H A Damdgpu_drv.c60 * - 3.0.0 - initial driver
61 * - 3.1.0 - allow reading more status registers (GRBM, SRBM, SDMA, CP)
62 * - 3.2.0 - GFX8: Uses EOP_TC_WB_ACTION_EN, so UMDs don't have to do the same
64 * - 3.3.0 - Add VM support for UVD on supported hardware.
65 * - 3.4.0 - Add AMDGPU_INFO_NUM_EVICTIONS.
66 * - 3.5.0 - Add support for new UVD_NO_OP register.
67 * - 3.6.0 - kmd involves use CONTEXT_CONTROL in ring buffer.
68 * - 3.7.0 - Add support for VCE clock list packet
69 * - 3.8.0 - Add support raster config init in the kernel
70 * - 3.9.0 - Add support for memory query info about VRAM and GTT.
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/linux/drivers/media/platform/ti/omap3isp/
H A Disppreview.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * TI OMAP3 ISP driver - Preview module
26 { /* RGB-RGB Matrix */
38 {-38, -75, 112},
39 {112, -94 , -18}
85 * -------------------------------------------------------------
125 * Default Gamma Correction Table - All components
146 * preview_config_luma_enhancement - Configure the Luminance Enhancement table
153 const struct omap3isp_prev_luma *yt = &params->luma; in preview_config_luma_enhancement()
159 isp_reg_writel(isp, yt->table[i], in preview_config_luma_enhancement()
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/linux/drivers/gpu/drm/amd/display/modules/freesync/
H A Dfreesync.c2 * Copyright 2016-2023 Advanced Micro Devices, Inc.
38 /* Threshold to exit/exit BTR (to avoid frequent enter-exits at the lower limit) */
72 core_freesync->dc = dc; in mod_freesync_create()
73 return &core_freesync->public; in mod_freesync_create()
119 * 10000) * stream->timing.h_total, in calc_duration_in_us_from_v_total()
120 stream->timing.pix_clk_100hz)); in calc_duration_in_us_from_v_total()
127 unsigned int max_hw_v_total = stream->ctx->dc->caps.max_v_total; in calc_max_hardware_v_total()
129 if (stream->ctx->dc->caps.vtotal_limited_by_fp2) { in calc_max_hardware_v_total()
130 max_hw_v_total -= stream->timing.v_front_porch + 1; in calc_max_hardware_v_total()
144 return stream->timing.v_total; in mod_freesync_calc_v_total_from_refresh()
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/linux/drivers/video/fbdev/
H A Dbroadsheetfb.c2 * broadsheetfb.c -- FB driver for E-Ink Broadsheet controller
35 #include <video/broadsheetfb.h>
121 par->board->set_ctl(par, BS_WR, 0); in broadsheet_gpio_issue_data()
122 par->board->set_hdb(par, data); in broadsheet_gpio_issue_data()
123 par->board->set_ctl(par, BS_WR, 1); in broadsheet_gpio_issue_data()
128 par->board->set_ctl(par, BS_DC, 0); in broadsheet_gpio_issue_cmd()
134 par->board->wait_for_rdy(par); in broadsheet_gpio_send_command()
136 par->board->set_ctl(par, BS_CS, 0); in broadsheet_gpio_send_command()
138 par->board->set_ctl(par, BS_DC, 1); in broadsheet_gpio_send_command()
139 par->board->set_ctl(par, BS_CS, 1); in broadsheet_gpio_send_command()
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H A Dudlfb.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * udlfb.c -- Framebuffer driver for DisplayLink USB controller
10 * usb-skeleton by GregKH.
12 * Device-specific portions based on information from Displaylink, with work
27 #include <video/udlfb.h>
48 * There are many DisplayLink-based graphics products, all with unique PIDs.
49 * So we match on DisplayLink's VID + Vendor-Defined Interface Class (0xff)
114 * ----- -----------------------------
200 while (actual_count--) { in dlfb_lfsr16()
219 * This takes a standard fbdev screeninfo struct and all of its monitor mode
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H A Dimsttfb.c2 * drivers/video/imsttfb.c -- frame buffer device for IMS TwinTurbo
40 #define eieio() /* Enforce In-order Execution of I/O */
172 TVPPMASK = 0x08, /* 2 Pixel Read-Mask */
182 TVPCXPOL = 0x30, /* 12 Cursor-Position X LSB */
183 TVPCXPOH = 0x34, /* 13 Cursor-Position X MSB */
184 TVPCYPOL = 0x38, /* 14 Cursor-Position Y LSB */
185 TVPCYPOH = 0x3c, /* 15 Cursor-Position Y MSB */
204 TVPIRCKL = 0x30, /* Color-Key Overlay Low */
205 TVPIRCKH = 0x31, /* Color-Key Overlay High */
206 TVPIRCRL = 0x32, /* Color-Key Red Low */
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/linux/Documentation/admin-guide/pm/
H A Dintel_pstate.rst1 .. SPDX-License-Identifier: GPL-2.0
22 Documentation/admin-guide/pm/cpufreq.rst if you have not done that yet.]
24 For the processors supported by ``intel_pstate``, the P-state concept is broader
27 information about that). For this reason, the representation of P-states used
32 ``intel_pstate`` maps its internal representation of P-states to frequencies too
38 Since the hardware P-state selection interface used by ``intel_pstate`` is
43 time the corresponding CPU is taken offline and need to be re-initialized when
47 only way to pass early-configuration-time parameters to it is via the kernel
58 active mode, it uses its own internal performance scaling governor algorithm or
60 mode it responds to requests made by a generic ``CPUFreq`` governor implementing
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/linux/Documentation/admin-guide/sysctl/
H A Dkernel.rst5 .. See scripts/check-sysctl-docs to keep this up to date
13 Documentation/admin-guide/sysctl/index.rst.
15 ------------------------------------------------------------------------------
39 If BSD-style process accounting is enabled these values control
58 See Documentation/power/video.rst. This allows the video resume mode to be set,
71 The machine hardware name, the same output as ``uname -m``
129 Ctrl-Alt-Delete). Writing a value to this file which doesn't
130 correspond to a running process will result in ``-ESRCH``.
132 See also `ctrl-alt-del`_.
170 %d dump mode, matches ``PR_SET_DUMPABLE`` and
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/linux/drivers/media/usb/gspca/
H A Dov519.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2008-2011 Jean-François Moine <moinejf@free.fr>
8 * This module is adapted from the ov51x-jpeg package, which itself
13 * Copyright (c) 1999-2006 Mark W. McClelland
20 * ov51x-jpeg original copyright is:
22 * Copyright (c) 2004-2007 Romain Beauxis <toots@rastageeks.org>
38 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
482 /*jfm: this value does not work for 800x600 - see isoc_init */
539 #define OV7670_R14_COM9 0x14 /* Control 9 - gain ceiling */
550 #define OV7670_R26_VPT 0x26 /* AGC/AEC fast mode op region */
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/linux/drivers/gpu/drm/xe/
H A Dxe_oa.c1 // SPDX-License-Identifier: MIT
3 * Copyright © 2023-2024 Intel Corporation
149 return tail >= head ? tail - head : in xe_oa_circ_diff()
150 tail + stream->oa_buffer.circ_size - head; in xe_oa_circ_diff()
155 return ptr + n >= stream->oa_buffer.circ_size ? in xe_oa_circ_incr()
156 ptr + n - stream->oa_buffer.circ_size : ptr + n; in xe_oa_circ_incr()
164 kfree(oa_config->regs); in xe_oa_config_release()
174 kref_put(&oa_config->ref, xe_oa_config_release); in xe_oa_config_put()
179 return kref_get_unless_zero(&oa_config->ref) ? oa_config : NULL; in xe_oa_config_get()
187 oa_config = idr_find(&oa->metrics_idr, metrics_set); in xe_oa_get_oa_config()
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/linux/arch/x86/kvm/vmx/
H A Dvmx.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Kernel-based Virtual Machine driver for Linux
5 * This module enables machines with Intel VT-x extensions to run virtual
50 #include <asm/spec-ctrl.h>
80 MODULE_DESCRIPTION("KVM support for VMX (Intel VT-x) extensions");
143 /* Guest_tsc -> host_tsc conversion requires 64-bit division. */
170 * These 2 parameters are used to config the controls for Pause-Loop Exiting:
186 /* Default doubles per-vcpu window every exit. */
190 /* Default resets per-vcpu window every exit to ple_window. */
198 /* Default is SYSTEM mode, 1 for host-guest mode (which is BROKEN) */
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/linux/drivers/pci/
H A Dquirks.c1 // SPDX-License-Identifier: GPL-2.0
3 * This file contains work-arounds for many known PCI hardware bugs.
5 * should be handled in arch-specific code.
22 #include <linux/isa-dma.h> /* isa_dma_bridge_buggy */
41 if (test_bit(PCI_LINK_LBMS_SEEN, &dev->priv_flags)) in pcie_lbms_seen()
102 int ret = -ENOTTY; in pcie_failed_link_retrain()
105 !pcie_cap_has_lnkctl2(dev) || !dev->link_active_reporting) in pcie_failed_link_retrain()
112 pci_info(dev, "broken device, retraining non-functional downstream link at 2.5GT/s\n"); in pcie_failed_link_retrain()
173 if ((f->class == (u32) (dev->class >> f->class_shift) || in pci_do_fixups()
174 f->class == (u32) PCI_ANY_ID) && in pci_do_fixups()
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/linux/include/net/
H A Dmac80211.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * mac80211 <-> driver interface
5 * Copyright 2002-2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
8 * Copyright 2013-2014 Intel Mobile Communications GmbH
9 * Copyright (C) 2015 - 201
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/linux/sound/soc/
H A Dsoc-core.c1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-core.c -- ALSA SoC Audio Layer
11 // with code, comments and ideas from :-
15 // o Add hw rules to enforce rates, etc.
40 #include <sound/soc-dpcm.h>
41 #include <sound/soc-topology.h>
42 #include <sound/soc-link.h>
76 return sysfs_emit(buf, "%ld\n", rtd->pmdown_time); in pmdown_time_show()
86 ret = kstrtol(buf, 10, &rtd->pmdown_time); in pmdown_time_store()
110 return attr->mode; /* always visible */ in soc_dev_attr_is_visible()
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