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/openbmc/linux/Documentation/devicetree/bindings/iio/adc/
H A Dadi,ad7124.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Stefan Popa <stefan.popa@analog.com>
16 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-8.pdf
21 - adi,ad7124-4
22 - adi,ad7124-8
32 clock-names:
34 - const: mclk
40 '#address-cells':
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H A Dadi,ad4130.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Cosmin Tanislav <cosmin.tanislav@analog.com>
15 https://www.analog.com/media/en/technical-documentation/data-sheets/AD4130-8.pdf
20 - adi,ad4130
29 clock-names:
31 - const: mclk
36 interrupt-names:
42 - int
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H A Dadi,max11410.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Ibrahim Tilki <Ibrahim.Tilki@analog.com>
21 - adi,max11410
30 interrupt-names:
34 - enum: [gpio0, gpio1]
35 - const: gpio1
37 '#address-cells':
40 '#size-cells':
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/openbmc/linux/drivers/gpu/drm/
H A Ddrm_gem_atomic_helper.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 #include <linux/dma-resv.h>
4 #include <linux/dma-fence-chain.h>
19 * The GEM atomic helpers library implements generic atomic-commit
32 * .. code-block:: c
44 * cannot be established by commit-tail functions, such as atomic_update,
47 * The helpers for shadow-buffered planes establish and release mappings,
49 * for commit-tail functions.
51 * Shadow-buffered planes can easily be enabled by using the provided macros
53 * These macros set up the plane and plane-helper callbacks to point to the
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/openbmc/linux/drivers/net/ethernet/engleder/
H A Dtsnep_ptp.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2021 Gerhard Engleder <gerhard@engleder-embedded.com> */
13 high = ioread32(adapter->addr + ECM_SYSTEM_TIME_HIGH); in tsnep_get_system_time()
15 low = ioread32(adapter->addr + ECM_SYSTEM_TIME_LOW); in tsnep_get_system_time()
17 high = ioread32(adapter->addr + ECM_SYSTEM_TIME_HIGH); in tsnep_get_system_time()
28 return -EINVAL; in tsnep_ptp_ioctl()
31 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) in tsnep_ptp_ioctl()
32 return -EFAULT; in tsnep_ptp_ioctl()
39 return -ERANGE; in tsnep_ptp_ioctl()
62 return -ERANGE; in tsnep_ptp_ioctl()
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/openbmc/linux/drivers/iio/pressure/
H A Dzpa2326.c1 // SPDX-License-Identifier: GPL-2.0-only
34 * - get device out of low power mode,
35 * - setup hardware sampling period,
36 * - at end of period, upon data ready interrupt: pop pressure samples out of
38 * - when no longer needed, stop sampling process by putting device into
70 /* 200 ms should be enough for the longest conversion time in one-shot mode. */
78 * struct zpa2326_frequency - Hardware sampling frequency descriptor
102 ARRAY_SIZE(zpa2326_sampling_frequencies) - 1]; in zpa2326_highest_frequency()
106 * struct zpa2326_private - Per-device internal private state
107 * @timestamp: Buffered samples ready datum.
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/openbmc/u-boot/include/
H A Dspi.h1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Common SPI Interface: Controller-specific definitions
22 #define SPI_LSB_FIRST BIT(3) /* per-word bits-on-wire */
46 * struct dm_spi_platdata - platform data for all SPI slaves
50 * dev_get_parent_platdata(slave->dev).
55 * @cs: Chip select number (0..n-1)
68 * struct spi_slave - Representation of a SPI slave
70 * For driver model this is the per-child data used by the SPI bus. It can
78 * controller-specific data.
86 * bus (bus->seq) so does not need to be stored
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/openbmc/linux/Documentation/gpu/amdgpu/display/
H A Ddcn-overview.rst10 .. kernel-figure:: dc_pipeline_overview.svg
19 * **Display Pipe and Plane (DPP)**: This block provides pre-blend pixel
24 multiple planes, using global or per-pixel alpha.
38 * **Multi-Media HUB (MMHUBBUB)**: Memory controller interface for DMCUB and DWB
43 the Display Micro-Controller Unit - version B (DMCUB), which is handled via
84 ----------------------
100 a one-to-one mapping of the link encoder to PHY, but we can configure the DCN
106 ---------
114 representation and convert them to a DCN specific floating-point format (i.e.,
115 different from the IEEE floating-point format). In the process, CNVC also
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/openbmc/linux/net/batman-adv/
H A Dfragmentation.c1 // SPDX-License-Identifier: GPL-2.0
26 #include "hard-interface.h"
32 * batadv_frag_clear_chain() - delete entries in the fragment buffer chain
44 hlist_del(&entry->list); in batadv_frag_clear_chain()
47 kfree_skb(entry->skb); in batadv_frag_clear_chain()
49 consume_skb(entry->skb); in batadv_frag_clear_chain()
56 * batadv_frag_purge_orig() - free fragments associated to an orig
67 chain = &orig_node->fragments[i]; in batadv_frag_purge_orig()
68 spin_lock_bh(&chain->lock); in batadv_frag_purge_orig()
71 batadv_frag_clear_chain(&chain->fragment_list, true); in batadv_frag_purge_orig()
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/openbmc/linux/drivers/usb/serial/
H A Dgeneric.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2010 - 2013 Johan Hovold (jhovold@gmail.com)
6 * Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com)
40 struct device *dev = &serial->interface->dev; in usb_serial_generic_probe()
42 dev_info(dev, "The \"generic\" usb-serial driver is only for testing and one-off prototypes.\n"); in usb_serial_generic_probe()
43 dev_info(dev, "Tell linux-usb@vger.kernel.org to add your device to a proper driver.\n"); in usb_serial_generic_probe()
51 struct device *dev = &serial->interface->dev; in usb_serial_generic_calc_num_ports()
54 num_ports = max(epds->num_bulk_in, epds->num_bulk_out); in usb_serial_generic_calc_num_ports()
58 return -ENODEV; in usb_serial_generic_calc_num_ports()
110 clear_bit(USB_SERIAL_THROTTLED, &port->flags); in usb_serial_generic_open()
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H A Ddigi_acceleport.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Digi AccelePort USB-4 and USB-2 Serial Converters
7 * Shamelessly based on Brian Warner's keyspan_pda.c and Greg Kroah-Hartman's
8 * usb-serial driver.
31 #define DRIVER_DESC "Digi AccelePort USB-2/USB-4 Serial Converter driver"
33 /* port output buffer length -- must be <= transfer buffer length - 2 */
37 /* port input buffer length -- must be >= transfer buffer length - 3 */
54 #define DIGI_2_ID 0x0002 /* USB-2 */
55 #define DIGI_4_ID 0x0004 /* USB-4 */
58 * "INB": can be used on the in-band endpoint
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/openbmc/linux/Documentation/userspace-api/media/v4l/
H A Dvidioc-decoder-cmd.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_DECODER_CMD - VIDIOC_TRY_DECODER_CMD - Execute an decoder command
38 These ioctls control an audio/video (usually MPEG-) decoder.
55 command to the decoder, and all buffered data is discarded. Applies to both
68 .. flat-table:: struct v4l2_decoder_cmd
69 :header-rows: 0
70 :stub-columns: 0
73 * - __u32
74 - ``cmd``
75 -
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/openbmc/linux/block/
H A Dblk-wbt.c1 // SPDX-License-Identifier: GPL-2.0
3 * buffered writeback throttling. loosely based on CoDel. We can't drop
6 * - Monitor latencies in a defined window of time.
7 * - If the minimum latency in the above window exceeds some target, increment
10 * - For any window where we don't have solid data on what the latencies
12 * - If latencies look good, decrement scaling step.
13 * - If we're only doing writes, allow the scaling step to go negative. This
16 * positive scaling steps where we shrink the monitoring window, a negative
25 #include <linux/backing-dev.h>
28 #include "blk-stat.h"
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/openbmc/linux/drivers/mailbox/
H A Dmailbox.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2013-2014 Linaro Ltd.
32 spin_lock_irqsave(&chan->lock, flags); in add_to_rbuf()
35 if (chan->msg_count == MBOX_TX_QUEUE_LEN) { in add_to_rbuf()
36 spin_unlock_irqrestore(&chan->lock, flags); in add_to_rbuf()
37 return -ENOBUFS; in add_to_rbuf()
40 idx = chan->msg_free; in add_to_rbuf()
41 chan->msg_data[idx] = mssg; in add_to_rbuf()
42 chan->msg_count++; in add_to_rbuf()
44 if (idx == MBOX_TX_QUEUE_LEN - 1) in add_to_rbuf()
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/openbmc/linux/Documentation/filesystems/
H A Dnetfs_library.rst1 .. SPDX-License-Identifier: GPL-2.0
9 - Overview.
10 - Per-inode context.
11 - Inode context helper functions.
12 - Buffered read helpers.
13 - Read helper functions.
14 - Read helper structures.
15 - Read helper operations.
16 - Read helper procedure.
17 - Read helper cache API.
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/openbmc/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 - 2017 Intel Deutschland GmbH
10 * Copyright (C) 2018 - 2023 Intel Corporation
31 * only partial functionality in hard- or firmware. This document
32 * defines the interface between mac80211 and low-level hardware
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/openbmc/linux/drivers/gpu/drm/i915/
H A Di915_perf.c2 * Copyright © 2015-2016 Intel Corporation
39 * The interface is particularly suited to exposing buffered metrics that are
44 * without special privileges. Access to system-wide metrics requires root
58 * might sample sets of tightly-coupled counters, depending on the
70 * interleaved with event-type specific members.
76 * would be acceptable to expose them to unprivileged applications - to hide
96 * side-band OA data captured via MI_REPORT_PERF_COUNT commands; we're
102 * For posterity, in case we might re-visit trying to adapt core perf to be
106 * - The perf based OA PMU driver broke some significant design assumptions:
110 * implications, the need to fake cpu-related data (such as user/kernel
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/openbmc/linux/drivers/tty/serdev/
H A Dcore.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2016-2017 Linaro Ltd., Rob Herring <robh@kernel.org>
6 * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
31 len = acpi_device_modalias(dev, buf, PAGE_SIZE - 1); in modalias_show()
32 if (len != -ENODEV) in modalias_show()
52 if (rc != -ENODEV) in serdev_device_uevent()
72 return dev->type == &serdev_device_type; in is_serdev_device()
78 ida_simple_remove(&ctrl_ida, ctrl->nr); in serdev_ctrl_release()
99 * serdev_device_add() - add a device previously constructed via serdev_device_alloc()
104 struct serdev_controller *ctrl = serdev->ctrl; in serdev_device_add()
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/openbmc/linux/Documentation/scsi/
H A Dst.rst1 .. SPDX-License-Identifier: GPL-2.0
23 flexible method and applicable to single-user workstations. However,
32 drive performs auto-detection of the tape format well (like some
33 QIC-drives). The result is that any tape can be read, writing can be
37 does not perform auto-detection well enough and there is a single
40 or not :-).
56 users (buffered and asynchronous writes). The modes also allow choices
57 between formats in multi-tape operations (the explicitly overridden
72 limits). Both the auto-rewind (minor equals device number) and
73 non-rewind devices (minor is 128 + device number) are implemented.
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/openbmc/linux/drivers/input/mouse/
H A Dcyapa_gen5.c6 * Copyright (C) 2014-2015 Cypress Semiconductor, Inc.
21 #include <linux/crc-itu-t.h>
33 #define CYAPA_TSG_IMG_MAX_RECORDS (CYAPA_TSG_IMG_END_ROW_NUM - \
141 * Bit 7 - 3: reserved
142 * Bit 2 - 0: touch type;
146 * 3 - 15 : reserved.
154 * Bit 6 - 5: indicates an event associated with this touch instance
159 * Bit 4 - 0: An arbitrary ID tag associated with a finger
164 /* Bit 7 - 0 of X-axis coordinate of the touch in pixel. */
167 /* Bit 15 - 8 of X-axis coordinate of the touch in pixel. */
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/openbmc/linux/mm/
H A Dfilemap.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 1994-1999 Linus Torvalds
30 #include <linux/error-injection.h>
33 #include <linux/backing-dev.h>
70 * finished 'unifying' the page and buffer cache and SMP-threaded the
71 * page-cache, 21.05.1999, Ingo Molnar <mingo@redhat.com>
73 * SMP-threaded pagemap-LRU 1999, Andrea Arcangeli <andrea@suse.de>
79 * ->i_mmap_rwsem (truncate_pagecache)
80 * ->private_lock (__free_pte->block_dirty_folio)
81 * ->swap_lock (exclusive_swap_page, others)
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/openbmc/u-boot/include/linux/usb/
H A Dgadget.h4 * We call the USB code inside a Linux-based peripheral device a "gadget"
5 * driver, except for the hardware-specific bus glue. One USB host can
9 * (C) Copyright 2002-2004 by David Brownell
14 * Ported to U-Boot by: Thomas Smits <ts.smits@gmail.com> and
29 * struct usb_request - describes one i/o request
45 * its buffer may be re-used.
54 * @status: Reports completion code, zero or a negative errno.
57 * Code "-ESHUTDOWN" indicates completion caused by device disconnect,
64 * reside in a device-side FIFO when the request is reported as
68 * hardware's driver can add extra per-request data to the memory it returns,
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/openbmc/u-boot/cmd/
H A Di2c.c1 // SPDX-License-Identifier: GPL-2.0+
25 * matches at least half of the data sheets :-/.
30 * Many non-memory chips have multiple registers and {addr} is used
31 * as the register index. Some non-memory chips have only one register
42 * successive reads using the I2C auto-incrementing memory pointer.
44 * If you are manipulating a large memory with 2-byte addresses, use
95 * When multiple buses are present, the list is an array of bus-address
126 #define DEFAULT_ADDR_LEN (-1)
156 return -ENODEV; in i2c_get_cur_bus()
163 return -ENODEV; in i2c_get_cur_bus()
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/openbmc/u-boot/env/
H A DKconfig20 while U-Boot is running, but once U-Boot exits it will not be
21 stored. U-Boot will therefore always start up with a default
31 - CONFIG_ENV_OFFSET:
32 - CONFIG_ENV_SIZE:
41 - CONFIG_ENV_EEPROM_IS_ON_I2C
45 - CONFIG_I2C_ENV_EEPROM_BUS
88 "embedded" in the text segment with the U-Boot code. This
94 4 kB sectors - with U-Boot code before and after it. With
97 between U-Boot and the environment.
131 when your environment is "embedded" within U-Boot code,
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/openbmc/linux/drivers/edac/
H A Dr82600_edac.c14 * www.radisys.com/files/support_downloads/007-01277-0002.82600DataBook.pdf
37 * signals buffered) and unbuffered DIMM types are supported. Mixing of
38 * registered and unbuffered DIMMs as well as mixing of ECC and non-ECC DIMMs
49 /* Radisys 82600 register addresses - device 0 function 0 - PCI bridge */
125 * 7:0 Address lines 30:24 - upper limit of
142 pdev = to_pci_dev(mci->pdev); in r82600_get_error_info()
143 pci_read_config_dword(pdev, R82600_EAP, &info->eapr); in r82600_get_error_info()
145 if (info->eapr & BIT(0)) in r82600_get_error_info()
151 if (info->eapr & BIT(1)) in r82600_get_error_info()
169 eapaddr = ((info->eapr >> 12) & 0x7FFF) << 13; in r82600_process_error_info()
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