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/openbmc/linux/Documentation/devicetree/bindings/iio/adc/
H A Dadi,ad7280a.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>
11 - Jonathan Cameron <jic23@kernel.org>
18 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7280A.pdf
31 adi,voltage-alert-last-chan:
40 adi,acquisition-time-ns:
42 Additional time may be needed to charge the sampling capacitors depending
47 adi,thermistor-termination:
[all …]
/openbmc/linux/drivers/iio/adc/
H A Dmax1118.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * MAX1117/MAX1118/MAX1119 8-bit, dual-channel ADCs driver
7 * Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX1117-MAX1119.pdf
13 * ------ --------- -----------
14 * nCS --> CNVST
15 * SCK --> SCLK
16 * MISO <-- DOUT
17 * ------ --------- -----------
75 * and low for a second time. in max1118_read()
79 .delay = { /* > CNVST Low Time 100 ns */ in max1118_read()
[all …]
H A Dad7280a.c1 // SPDX-License-Identifier: GPL-2.0
128 #define AD7280A_NUM_CH (AD7280A_AUX_ADC_6_REG - \
134 (c) - AD7280A_CELLS_PER_DEV)
142 /* 5-bit device address is sent LSB first */
202 unsigned char crc = ad7280_calc_crc8(st->crc_tab, val >> 10); in ad7280_check_crc()
205 return -EIO; in ad7280_check_crc()
214 * conversion delays and acquisition time options it may take up to 250us, in
220 if (st->readback_delay_us < 50) in ad7280_delay()
221 udelay(st->readback_delay_us); in ad7280_delay()
230 .tx_buf = &st->tx, in __ad7280_read32()
[all …]
/openbmc/linux/drivers/comedi/drivers/
H A Daddi_apci_3120.c1 // SPDX-License-Identifier: GPL-2.0+
4 * Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module.
6 * ADDI-DATA GmbH
8 * D-77833 Ottersweier
9 * Tel: +19(0)7223/9493-0
10 * Fax: +49(0)7223/9493-92
11 * http://www.addi-data.com
12 * info@addi-data.com
22 * PCI BAR 0 register map (devpriv->amcc)
28 * PCI BAR 1 register map (dev->iobase)
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H A Dcomedi_8254.c1 // SPDX-License-Identifier: GPL-2.0+
9 * COMEDI - Linux Control and Measurement Device Interface
20 * This module is not used directly by end-users. Rather, it is used by other
23 * acquisition. Some drivers also expose the counters for general purpose use.
31 * comedi_device dev->pacer and will be freed by the comedi core during
42 * I8254_MODE1 Hardware retriggerable one-shot
73 * Typically the pacer clock is created by cascading two of the 16-bit counters
74 * to create a 32-bit rate generator (I8254_MODE2). These functions are
79 * ns timing.
83 * clock (in ns).
[all …]
H A Dquatech_daqp_cs.c1 // SPDX-License-Identifier: GPL-2.0
8 * COMEDI - Linux Control and Measurement Device Interface
13 * ftp://ftp.quatech.com/Manuals/daqp-208.pdf
15 * This manual is for both the DAQP-208 and the DAQP-308.
18 * - A/D conversion
19 * - 8 channels
20 * - 4 gain ranges
21 * - ground ref or differential
22 * - single-shot and timed both supported
23 * - D/A conversion, single-shot
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H A Ddas1800.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Comedi driver for Keithley DAS-1700/DAS-1800 series boards
6 * COMEDI - Linux Control and Measurement Device Interface
14 * Devices: [Keithley Metrabyte] DAS-1701ST (das-1701st),
15 * DAS-1701ST-DA (das-1701st-da), DAS-1701/AO (das-1701ao),
16 * DAS-1702ST (das-1702st), DAS-1702ST-DA (das-1702st-da),
17 * DAS-1702HR (das-1702hr), DAS-1702HR-DA (das-1702hr-da),
18 * DAS-1702/AO (das-1702ao), DAS-1801ST (das-1801st),
19 * DAS-1801ST-DA (das-1801st-da), DAS-1801HC (das-1801hc),
20 * DAS-1801AO (das-1801ao), DAS-1802ST (das-1802st),
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H A Dni_labpc_common.c1 // SPDX-License-Identifier: GPL-2.0+
7 * Copyright (C) 2001-2003 Frank Mori Hess <fmhess@users.sourceforge.net>
83 return inb(dev->iobase + reg); in labpc_inb()
89 outb(byte, dev->iobase + reg); in labpc_outb()
94 return readb(dev->mmio + reg); in labpc_readb()
100 writeb(byte, dev->mmio + reg); in labpc_writeb()
105 struct labpc_private *devpriv = dev->private; in labpc_cancel()
108 spin_lock_irqsave(&dev->spinlock, flags); in labpc_cancel()
109 devpriv->cmd2 &= ~(CMD2_SWTRIG | CMD2_HWTRIG | CMD2_PRETRIG); in labpc_cancel()
110 devpriv->write_byte(dev, devpriv->cmd2, CMD2_REG); in labpc_cancel()
[all …]
H A Damplc_dio200.c1 // SPDX-License-Identifier: GPL-2.0+
7 * Copyright (C) 2005-2013 MEV Ltd. <https://www.mev.co.uk/>
9 * COMEDI - Linux Control and Measurement Device Interface
24 * [0] - I/O port base address
25 * [1] - IRQ (optional, but commands won't work without it)
32 * ------------- ------------- -------------
34 * 0 PPI-X PPI-X PPI-X
35 * 1 CTR-Y1 PPI-Y PPI-Y
36 * 2 CTR-Y2 CTR-Z1* CTR-Z1
37 * 3 CTR-Z1 INTERRUPT* CTR-Z2
[all …]
H A Damplc_dio200_pci.c1 // SPDX-License-Identifier: GPL-2.0+
6 * Copyright (C) 2005-2013 MEV Ltd. <https://www.mev.co.uk/>
8 * COMEDI - Linux Control and Measurement Device Interface
30 * ------------- ------------- -------------
32 * 0 PPI-X PPI-X PPI-X
33 * 1 PPI-Y UNUSED UNUSED
34 * 2 CTR-Z1 PPI-Y UNUSED
35 * 3 CTR-Z2 UNUSED UNUSED
36 * 4 INTERRUPT CTR-Z1 CTR-Z1
37 * 5 CTR-Z2 CTR-Z2
[all …]
H A Ds626.c1 // SPDX-License-Identifier: GPL-2.0+
6 * COMEDI - Linux Control and Measurement Device Interface
10 * Copyright (C) 2002-2004 Sensoray Co., Inc.
68 * struct s626_private - Working data for s626 driver.
69 * @ai_cmd_running: non-zero if ai_cmd is running.
70 * @ai_sample_timer: time between samples in units of the timer.
72 * @ai_convert_timer: time between conversion in units of the timer.
98 #define S626_INDXMASK(C) (1 << (((C) > 2) ? ((C) * 2 - 1) : ((C) * 2 + 4)))
110 writel(val, dev->mmio + reg); in s626_mc_enable()
116 writel(cmd << 16, dev->mmio + reg); in s626_mc_disable()
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H A Dadl_pci9118.c1 // SPDX-License-Identifier: GPL-2.0
6 * card: PCI-9118DG, PCI-9118HG, PCI-9118HR
15 * Description: Adlink PCI-9118DG, PCI-9118HG, PCI-9118HR
17 * Devices: [ADLink] PCI-9118DG (pci9118dg), PCI-9118HG (pci9118hg),
18 * PCI-9118HR (pci9118hr)
25 * - If cmd->scan_begin_src=TRIG_EXT then trigger input is TGIN (pin 46).
26 * - If cmd->convert_src=TRIG_EXT then trigger input is EXTTRG (pin 44).
27 * - If cmd->start_src/stop_src=TRIG_EXT then trigger input is TGIN (pin 46).
28 * - It is not necessary to have cmd.scan_end_arg=cmd.chanlist_len but
30 * - If return value of cmdtest is 5 then you've bad channel list
[all …]
H A Dcb_pcidas64.c1 // SPDX-License-Identifier: GPL-2.0+
4 * This is a driver for the ComputerBoards/MeasurementComputing PCI-DAS
13 * his pci-das6402 driver, and source code for working QNX pci-6402
18 * John Sims, for much testing and feedback on pcidas-4020 support.
20 * COMEDI - Linux Control and Measurement Device Interface
21 * Copyright (C) 1997-8 David A. Schleef <ds@schleef.org>
26 * Description: MeasurementComputing PCI-DAS64xx, 60XX, and 4020 series
31 * Devices: [Measurement Computing] PCI-DAS6402/16 (cb_pcidas64),
32 * PCI-DAS6402/12, PCI-DAS64/M1/16, PCI-DAS64/M2/16,
33 * PCI-DAS64/M3/16, PCI-DAS6402/16/JR, PCI-DAS64/M1/16/JR,
[all …]
H A Damplc_pci230.c1 // SPDX-License-Identifier: GPL-2.0+
8 * COMEDI - Linux Control and Measurement Device Interface
35 * --------- ---------
43 * The AI subdevice has 16 single-ended channels or 8 differential
46 * The PCI230 and PCI260 cards have 12-bit resolution. The PCI230+ and
47 * PCI260+ cards have 16-bit resolution.
51 * or PCI260 then it actually uses a "pseudo-differential" mode where the
62 * 0 => [-10, +10] V
63 * 1 => [-5, +5] V
64 * 2 => [-2.5, +2.5] V
[all …]
/openbmc/linux/drivers/iio/common/ssp_sensors/
H A Dssp.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
44 SSP_FW_DL_STATE_FAIL = -1,
56 /* AP -> SSP Instruction */
119 /* SSP -> AP ACK about write CMD */
142 * struct ssp_data - ssp platformdata structure
151 * @time_syncing: time syncing indication flag
152 * @timestamp: previous time in ns calculated for time syncing
163 * @delay_buf: data acquisition intervals table
/openbmc/linux/include/uapi/linux/
H A Dcomedi.h1 /* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
32 * NOTE: 'comedi_config --init-data' is deprecated
40 /* length of nth chunk of firmware data -*/
78 /* counters -- these are arbitrary values */
120 /* try to use a real-time interrupt while performing command */
123 /* wake up on end-of-scan events */
160 #define TRIG_NOW 0x00000002 /* trigger now + N ns */
162 #define TRIG_TIME 0x00000008 /* trigger at time N ns */
[all …]
/openbmc/linux/drivers/gpu/drm/i915/gt/
H A Dselftest_engine_pm.c1 // SPDX-License-Identifier: GPL-2.0
25 return *a - *b; in cmp_u64()
76 struct intel_engine_cs *engine = ce->engine; in __measure_timestamps()
77 u32 *sema = memset32(engine->status_page.addr + 1000, 0, 5); in __measure_timestamps()
78 u32 offset = i915_ggtt_offset(engine->status_page.vma); in __measure_timestamps()
96 cs = emit_srm(cs, RING_TIMESTAMP(engine->mmio_base), offset + 4000); in __measure_timestamps()
97 cs = emit_srm(cs, RING_CTX_TIMESTAMP(engine->mmio_base), offset + 4004); in __measure_timestamps()
102 cs = emit_srm(cs, RING_TIMESTAMP(engine->mmio_base), offset + 4016); in __measure_timestamps()
103 cs = emit_srm(cs, RING_CTX_TIMESTAMP(engine->mmio_base), offset + 4012); in __measure_timestamps()
121 *dt = local_clock() - *dt; in __measure_timestamps()
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/openbmc/qemu/docs/system/i386/
H A Dhyperv.rst1 Hyper-V Enlightenments
6 -----------
11 It may, however, be hard-to-impossible to add support for these interfaces to
14 KVM on x86 implements Hyper-V Enlightenments for Windows guests. These features
15 make Windows and Hyper-V guests think they're running on top of a Hyper-V
16 compatible hypervisor and use Hyper-V specific features.
20 -----
22 No Hyper-V enlightenments are enabled by default by either KVM or QEMU. In
25 .. parsed-literal::
27 |qemu_system| --enable-kvm --cpu host,hv_relaxed,hv_vpindex,hv_time, ...
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/openbmc/linux/Documentation/filesystems/
H A Dxfs-online-fsck-design.rst1 .. SPDX-License-Identifier: GPL-2.0
8 Heading 3 uses "----"
25 - To help kernel distributors understand exactly what the XFS online fsck
28 - To help people reading the code to familiarize themselves with the relevant
31 - To help developers maintaining the system by capturing the reasons
59 - Provide a hierarchy of names through which application programs can associate
60 arbitrary blobs of data for any length of time,
62 - Virtualize physical storage media across those names, and
64 - Retrieve the named data blobs at any time.
66 - Examine resource usage.
[all …]
/openbmc/linux/kernel/rcu/
H A Drefscale.c1 // SPDX-License-Identifier: GPL-2.0+
41 #define SCALE_FLAG "-ref-scale: "
78 "Holdoff time before test start (s)");
83 // Number of readers, with -1 defaulting to about 75% of the CPUs.
84 torture_param(int, nreaders, -1, "Number of readers, -1 for 75% of CPUs.");
88 torture_param(int, readdelay, 0, "Read-side delay in nanoseconds.");
150 for (i = nloops; i >= 0; i--) { in ref_rcu_read_section()
160 for (i = nloops; i >= 0; i--) { in ref_rcu_delay_section()
188 for (i = nloops; i >= 0; i--) { in srcu_ref_scale_read_section()
199 for (i = nloops; i >= 0; i--) { in srcu_ref_scale_delay_section()
[all …]
H A Dsrcutree.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Sleepable Read-Copy Update mechanism for mutual exclusion.
11 * For detailed explanation of Read-Copy Update mechanism see -
33 /* Holdoff in nanoseconds for auto-expediting. */
38 /* Overflow-check frequency. N bits roughly says every 2**N grace periods. */
45 * 1: Convert at init_srcu_struct() time.
47 * 3: Decide at boot time based on system shape (default).
63 /* Number of CPUs to trigger init_srcu_struct()-time transition to big. */
71 /* Early-boot callback-management, so early that no lock is required! */
80 /* Wrappers for lock acquisition and release, see raw_spin_lock_rcu_node(). */
[all …]
/openbmc/linux/Documentation/kernel-hacking/
H A Dlocking.rst37 +------------------------------------+------------------------------------+
41 +------------------------------------+------------------------------------+
43 +------------------------------------+------------------------------------+
45 +------------------------------------+------------------------------------+
47 +------------------------------------+------------------------------------+
49 +------------------------------------+------------------------------------+
51 +------------------------------------+------------------------------------+
57 +------------------------------------+------------------------------------+
61 +------------------------------------+------------------------------------+
63 +------------------------------------+------------------------------------+
[all …]
/openbmc/linux/fs/gfs2/
H A Dglock.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
100 struct lm_lockname *wait_name = wait_glock->name; in glock_wake_function()
103 if (wake_name->ln_sbd != wait_name->ln_sbd || in glock_wake_function()
104 wake_name->ln_number != wait_name->ln_number || in glock_wake_function()
105 wake_name->ln_type != wait_name->ln_type) in glock_wake_function()
118 * wake_up_glock - Wake up waiters on a glock
123 wait_queue_head_t *wq = glock_waitqueue(&gl->gl_name); in wake_up_glock()
126 __wake_up(wq, TASK_NORMAL, 1, &gl->gl_name); in wake_up_glock()
[all …]
/openbmc/linux/kernel/sched/
H A Dfair.c1 // SPDX-License-Identifier: GPL-2.0
43 #include <linux/memory-tiers.h>
61 * The initial- and re-scaling of tunables is configurable
65 * SCHED_TUNABLESCALING_NONE - unscaled, always *1
66 * SCHED_TUNABLESCALING_LOG - scaled logarithmical, *1+ilog(ncpus)
67 * SCHED_TUNABLESCALING_LINEAR - scaled linear, *ncpus
74 * Minimal preemption granularity for CPU-bound tasks:
108 return -cpu; in arch_asym_cpu_priority()
129 * Amount of runtime to allocate from global (tg) to local (per-cfs_rq) pool
130 * each time a cfs_rq requests quota.
[all …]
/openbmc/linux/arch/x86/kvm/
H A Dx86.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Kernel-based Virtual Machine driver for Linux
16 * Ben-Ami Yassour <benami@il.ibm.com>
48 #include <linux/user-return-notifier.h>
62 #include <linux/entry-kvm.h>
103 ((struct kvm_vcpu *)(ctxt)->vcp
2674 __kvm_synchronize_tsc(struct kvm_vcpu * vcpu,u64 offset,u64 tsc,u64 ns,bool matched) __kvm_synchronize_tsc() argument
2723 u64 offset, ns, elapsed; kvm_synchronize_tsc() local
2855 u64 ns; do_monotonic_raw() local
2874 u64 ns; do_realtime() local
5539 u64 offset, tsc, ns; kvm_arch_tsc_set_attr() local
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