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/linux/drivers/media/pci/intel/ipu6/
H A Dipu6.h1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright (C) 2013 - 2024 Intel Corporation */
11 #include "ipu6-buttress.h"
17 #define IPU6_NAME "intel-ipu6"
35 * IPU6 - TGL
36 * IPU6SE - JSL
37 * IPU6EP - ADL/RPL
38 * IPU6EP_MTL - MTL
96 /* The firmware is accessible within the first 2 GiB only in non-secure mode. */
110 * collection capability. CDC FIFO burst collectors have a configurable
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/linux/include/uapi/linux/
H A Dtps6594_pfsm.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * Userspace ABI for TPS6594 PMIC Pre-configurable Finite State Machine
5 * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
16 * struct pmic_state_opt - PMIC state options
/linux/drivers/misc/
H A Dtps6594-pfsm.c1 // SPDX-License-Identifier: GPL-2.0
3 * PFSM (Pre-configurable Finite State Machine) driver for TI TPS65224/TPS6594/TPS6593/LP8764 PMICs
5 * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
35 #define TPS6594_FILE_TO_PFSM(f) container_of((f)->private_data, struct tps6594_pfsm, miscdev)
38 * struct tps6594_pfsm - device private data structure
60 return -EINVAL; in tps6594_pfsm_read()
63 if (count > TPS6594_PMIC_MAX_POS - pos) in tps6594_pfsm_read()
64 count = TPS6594_PMIC_MAX_POS - pos; in tps6594_pfsm_read()
67 ret = regmap_read(pfsm->regmap, pos + i, &val); in tps6594_pfsm_read()
72 return -EFAULT; in tps6594_pfsm_read()
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
27 See Documentation/misc-devices/ad525x_dpot.rst for the
40 module will be called ad525x_dpot-i2c.
51 module will be called ad525x_dpot-spi.
65 This option enables device driver support for in-band access to the
78 website <https://www-03.ibm.com/systems/info/x86servers/serverproven/compat/us/>
112 UFS. Provides interface for in-kernel security controllers to access
211 called smpro-errmon.
221 called smpro-misc.
224 tristate "CS5535/CS5536 Geode Multi-Function General Purpose Timer (MFGPT) support"
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/linux/drivers/media/dvb-frontends/
H A Ddrxk_hard.h1 /* SPDX-License-Identifier: GPL-2.0 */
24 #define SCU_RESULT_SIZE -4
25 #define SCU_RESULT_INVPAR -3
26 #define SCU_RESULT_UNKSTD -2
27 #define SCU_RESULT_UNKCMD -1
189 u16 top; /* rf-agc take over point */
190 u16 cut_off_current; /* rf-agc is accelerated if output current
191 is below cut-off current */
197 u16 reference; /* pre SAW reference value, range 0 .. 31 */
198 bool use_pre_saw; /* TRUE algorithms must use pre SAW sense */
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/linux/Documentation/misc-devices/
H A Dtps6594-pfsm.rst1 .. SPDX-License-Identifier: GPL-2.0
12 Strictly speaking, PFSM (Pre-configurable Finite State Machine) is not
23 ---------------
25 - tps6594-q1
26 - tps6593-q1
27 - lp8764-q1
32 drivers/misc/tps6594-pfsm.c
48 required to be always-on, are turned off (low-power).
78 # hexdump -C /dev/pfsm-0-0x48
85 ----------------------
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/linux/drivers/clk/
H A Dclk-npcm8xx.c1 // SPDX-License-Identifier: GPL-2.0
15 #include <linux/clk-provider.h>
23 #include <dt-bindings/clock/nuvoton,npcm845-clk.h>
24 #include <soc/nuvoton/clock-npcm8xx.h>
188 /* configurable pre dividers: */
190 { NPCM8XX_CLKDIV1, 21, 5, "pre_adc", &npcm8xx_muxes[6].hw, CLK_DIVIDER_READ_ONLY, 0, -1 },
194 /* configurable dividers: */
237 val = readl_relaxed(pll->pllcon); in npcm8xx_clk_pll_recalc_rate()
265 return ERR_PTR(-ENOMEM); in npcm8xx_clk_register_pll()
273 pll->pllcon = pllcon; in npcm8xx_clk_register_pll()
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
59 Low-Noise JESD204B Compliant Clock Jitter Cleaner With Dual Loop PLLs
88 These multi-function devices have two fixed-rate oscillators, clocked at 32KHz each.
98 multi-function device has one fixed-rate oscillator, clocked
129 be pre-programmed to support other configurations and features not yet
178 This driver supports TI CDCE706 programmable 3-PLL clock synthesizer.
196 For example, the CDCE925 contains two PLLs with spread-spectrum
206 tristate "Clock driver for CS2000 Fractional-N Clock Synthesizer & Clock Multiplier"
237 provides read-only PLLs, derived from the main crystal clock (which
296 clock. These multi-function devices have two (S2MPS14) or three
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/linux/Documentation/driver-api/thermal/
H A Dexynos_thermal.rst15 ---------------------------
19 The chip only exposes the measured 8-bit temperature code value
27 Tc = (T - 25) * (TI2 - TI1) / (85 - 25) + TI1
31 Tc = T + TI1 - 25
47 when temperature exceeds pre-defined levels.
48 The maximum number of configurable threshold is five.
65 -----------------------
74 TMU configuration data -----> TMU Driver <----> Exynos Core thermal wrapper
/linux/Documentation/core-api/
H A Dgenericirq.rst7 :Copyright: |copy| 2005-2010: Thomas Gleixner
8 :Copyright: |copy| 2005-2006: Ingo Molnar
29 __do_IRQ() super-handler, which is able to deal with every type of
36 - Level type
38 - Edge type
40 - Simple type
44 - Fast EOI type
46 In the SMP world of the __do_IRQ() super-handler another type was
49 - Per CPU type
51 This split implementation of high-level IRQ handlers allows us to
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/linux/drivers/clocksource/
H A Dtimer-cadence-ttc.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2011-2013 Xilinx
23 * This driver configures the 2 16/32-bit count-up timers as follows:
30 * common to all the timer channels (T1, T2, and T3). With a pre-scaler of 32,
33 * The input frequency to the timer module in silicon is configurable and
34 * obtained from device tree. The pre-scaler of 32 is used.
55 * Setup the timers to use pre-scaling, using a fixed value for now that will
60 #define CLK_CNTRL_PRESCALE ((PRESCALE_EXPONENT - 1) << 1)
67 * struct ttc_timer - This definition defines local timer structure
105 * ttc_set_interval - Set the timer interval value
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/linux/drivers/block/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
28 <file:Documentation/admin-guide/blockdev/floppy.rst>.
41 special low-level hardware accesses to them (access and use
42 non-standard formats, for example), then enable this.
64 If you have a SWIM-3 (Super Woz Integrated Machine 3; from Apple)
95 tristate "SEGA Dreamcast GD-ROM drive"
100 "GD-ROM" by SEGA to signify it is capable of reading special disks
114 The User-Mode Linux port includes a driver called UBD which will let
124 host's disk; this may cause problems if, for example, the User-Mode
129 immediately) is configurable on a per-UBD basis by using a special
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/linux/drivers/platform/x86/
H A Dapple-gmux.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * Copyright (C) 2010-2012 Andreas Heider <andreas@meetr.de>
19 #include <linux/apple-gmux.h>
32 * A `Lattice XP2`_ on pre-retinas, a `Renesas R4F2113`_ on pre-T2 retinas.
41 * dual GPUs but no built-in display.)
45 * to access a pre-retina gmux are infixed ``_pio_``, those for a pre-T2
54 * https://www.nxp.com/docs/en/data-sheet/PCAL6524.pdf
112 return inb(gmux_data->iostart + port); in gmux_pio_read8()
118 outb(val, gmux_data->iostart + port); in gmux_pio_write8()
123 return inl(gmux_data->iostart + port); in gmux_pio_read32()
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/linux/include/linux/
H A Dlru_cache.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
7 Copyright (C) 2003-2008, LINBIT Information Technologies GmbH.
8 Copyright (C) 2003-2008, Philipp Reisner <philipp.reisner@linbit.com>.
9 Copyright (C) 2003-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
24 This header file (and its .c file; kernel-doc of functions see there)
42 we need to resync all regions that have been target of in-flight WRITE IO
48 This is known as "write intent log", and can be implemented as on-disk
53 in-flight WRITE IO, e.g. by only lazily clearing the on-disk write-intent
64 [*] usually as a result of a cluster split-brain and insufficient protection.
68 Having it fine-grained reduces the amount of resync traffic.
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/linux/arch/arc/mm/
H A Dtlb.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
26 * Utility Routine to erase a J-TLB entry
89 * with existing location. This will cause Write CMD to over-write in tlb_entry_insert()
131 * Un-conditionally (without lookup) erase the entire MMU contents
139 int num_tlb = mmu->sets * mmu->ways; in local_flush_tlb_all()
185 if (atomic_read(&mm->mm_users) == 0) in local_flush_tlb_mm()
189 * - Move to a new ASID, but only if the mm is still wired in in local_flush_tlb_mm()
190 * (Android Binder ended up calling this for vma->mm != tsk->mm, in local_flush_tlb_mm()
191 * causing h/w - s/w ASID to get out of sync) in local_flush_tlb_mm()
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/linux/drivers/gpu/drm/vc4/
H A Dvc4_drv.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2014-2015 Broadcom
11 * OpenGL ES 2.0-compatible 3D engine called V3D, and a highly
12 * configurable display output pipeline that supports HDMI, DSI, DPI,
16 * compute shader-style jobs using the same shader processor as is
27 #include <linux/dma-mapping.h>
41 #include <soc/bcm2835/raspberrypi-firmware.h>
68 int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); in vc4_dumb_fixup_args()
70 if (args->pitch < min_pitch) in vc4_dumb_fixup_args()
71 args->pitch = min_pitch; in vc4_dumb_fixup_args()
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/linux/drivers/usb/host/
H A Dpci-quirks.c1 // SPDX-License-Identifier: GPL-2.0
4 * Some of it includes work-arounds for PCI hardware and BIOS quirks.
5 * It may need to run early during booting -- before USB would normally
6 * initialize -- to ensure that Linux doesn't use any legacy modes.
22 #include "pci-quirks.h"
23 #include "xhci-ext-caps.h"
146 * amd_chipset_sb_type_init - initialize amd chipset southbridge type
156 pinfo->sb_type.gen = AMD_CHIPSET_UNKNOWN; in amd_chipset_sb_type_init()
158 pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, in amd_chipset_sb_type_init()
160 if (pinfo->smbus_dev) { in amd_chipset_sb_type_init()
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/linux/drivers/clk/sunxi/
H A Dclk-sunxi.c1 // SPDX-License-Identifier: GPL-2.0-or-later
9 #include <linux/clk-provider.h>
14 #include <linux/reset-controller.h>
19 #include "clk-factors.h"
27 * sun4i_get_pll1_factors() - calculates n, k, m, p factors for PLL1
38 div = req->rate / 6000000; in sun4i_get_pll1_factors()
39 req->rate = 6000000 * div; in sun4i_get_pll1_factors()
42 req->m = 0; in sun4i_get_pll1_factors()
45 if (req->rate >= 768000000 || req->rate == 42000000 || in sun4i_get_pll1_factors()
46 req->rate == 54000000) in sun4i_get_pll1_factors()
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/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
17 DPLL's input and output may be configurable.
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/arch/powerpc/platforms/512x/
H A Dmpc512x_shared.c1 // SPDX-License-Identifier: GPL-2.0-or-later
17 #include <linux/fsl-diu-fb.h>
36 out_be32(&reset_module_base->rpr, 0x52535445); in mpc512x_restart()
38 out_be32(&reset_module_base->rcr, 0x2); in mpc512x_restart()
47 u8 gamma[0x300]; /* 32-bit aligned! */
48 struct diu_ad ad0; /* 32-bit aligned! */
63 np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-diu"); in mpc512x_set_pixel_clock()
71 clk_diu = clk_get_sys(np->name, "ipg"); in mpc512x_set_pixel_clock()
85 * determine the acceptable clock range for the monitor (+/- 5%), in mpc512x_set_pixel_clock()
88 pr_debug("DIU pixclock in ps - %u\n", pixclock); in mpc512x_set_pixel_clock()
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/linux/drivers/media/i2c/
H A Dmsp3400-driver.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
9 * AM-Mono
13 * FM-Mono
14 * should work. The stereo modes are backward compatible to FM-mono,
15 * therefore FM-Mono should be always available.
17 * FM-Stereo (B/G, used in germany)
20 * FM-Stereo (satellite)
22 * switch to stereo -- untested)
29 * - better SAT support
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/linux/Documentation/arch/x86/
H A Dtdx.rst1 .. SPDX-License-Identifier: GPL-2.0
18 CPU-attested software module called 'the TDX module' runs inside the new
22 TDX also leverages Intel Multi-Key Total Memory Encryption (MKTME) to
23 provide crypto-protection to the VMs. TDX reserves part of MKTME KeyIDs
32 TDX boot-time detection
33 -----------------------
41 ---------------------------------------
59 Besides initializing the TDX module, a per-cpu initialization SEAMCALL
103 ------------------------------------------
110 of memory regions (out of CMRs) as "TDX-usable" memory and pass those
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/linux/fs/xfs/
H A Dxfs_mount.h1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
31 * Error numbers define the errors that are configurable.
45 #define XFS_ERR_RETRY_FOREVER -1
50 * signed 32-bit long is sufficient for a HZ value up to 24855. Making it
51 * signed lets us store the special "-1" value, meaning retry forever.
56 long retry_timeout; /* in jiffies, -1 = infinite */
60 * Per-cpu deferred inode inactivation GC lists.
85 * degenerate case of a pre-rtgroups filesystem, the incore rtgroup
86 * pretends to have a zero-block and zero-blklog rtgroup.
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/linux/fs/notify/fanotify/
H A Dfanotify_user.c1 // SPDX-License-Identifier: GPL-2.0
51 /* configurable via /proc/sys/fs/fanotify/ */
151 info->name_len); in fanotify_dir_name_info_len()
154 info->name2_len); in fanotify_dir_name_info_len()
166 if (fanotify_is_error_event(event->mask)) in fanotify_event_len()
172 (event->mask & FAN_ONDIR)) { in fanotify_event_len()
184 if (fanotify_is_mnt_event(event->mask)) in fanotify_event_len()
202 assert_spin_locked(&group->notification_lock); in fanotify_unhash_event()
207 if (WARN_ON_ONCE(hlist_unhashed(&event->merge_list))) in fanotify_unhash_event()
210 hlist_del_init(&event->merge_list); in fanotify_unhash_event()
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/linux/Documentation/admin-guide/device-mapper/
H A Dvdo-design.rst1 .. SPDX-License-Identifier: GPL-2.0-only
4 Design of dm-vdo
7 The dm-vdo (virtual data optimizer) target provides inline deduplication,
8 compression, zero-block elimination, and thin provisioning. A dm-vdo target
12 production environments ever since. It was made open-source in 2017 after
14 dm-vdo. For usage, see vdo.rst in the same directory as this file.
25 The design of dm-vdo is based on the idea that deduplication is a two-part
27 storing multiple copies of those duplicates. Therefore, dm-vdo has two main
34 -------------------
41 design attempts to be lock-free.
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