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/kernel/linux/linux-5.10/Documentation/driver-api/
Dspi.rst7 often in the range of 1-20 MHz), a "Master Out, Slave In" (MOSI) data
8 line, and a "Master In, Slave Out" (MISO) data line. SPI is a full
12 additional chipselect line is usually active-low (nCS); four signals are
18 only "master" side interfaces are supported, where Linux talks to SPI
25 a pair of FIFOs connected to dual DMA engines on the other side of the
28 the SPI side of their device as a :c:type:`struct spi_controller
29 <spi_controller>`. SPI devices are children of that master,
33 board-specific initialization code. A :c:type:`struct spi_driver
46 .. kernel-doc:: include/linux/spi/spi.h
49 .. kernel-doc:: drivers/spi/spi.c
[all …]
Di2c.rst5 the "Inter-IC" bus, a simple bus protocol which is widely used where low
7 some vendors use another name (such as "Two-Wire Interface", TWI) for
12 I2C is a multi-master bus; open drain signaling is used to arbitrate
16 The Linux I2C programming interfaces support the master side of bus
17 interactions and the slave side. The programming interface is
38 .. kernel-doc:: include/linux/i2c.h
41 .. kernel-doc:: drivers/i2c/i2c-boardinfo.c
44 .. kernel-doc:: drivers/i2c/i2c-core-base.c
47 .. kernel-doc:: drivers/i2c/i2c-core-smbus.c
/kernel/linux/linux-6.6/Documentation/driver-api/
Dspi.rst7 often in the range of 1-20 MHz), a "Master Out, Slave In" (MOSI) data
8 line, and a "Master In, Slave Out" (MISO) data line. SPI is a full
12 additional chipselect line is usually active-low (nCS); four signals are
18 only "master" side interfaces are supported, where Linux talks to SPI
25 a pair of FIFOs connected to dual DMA engines on the other side of the
28 the SPI side of their device as a :c:type:`struct spi_controller
29 <spi_controller>`. SPI devices are children of that master,
33 board-specific initialization code. A :c:type:`struct spi_driver
46 .. kernel-doc:: include/linux/spi/spi.h
49 .. kernel-doc:: drivers/spi/spi.c
[all …]
Di2c.rst5 the "Inter-IC" bus, a simple bus protocol which is widely used where low
7 some vendors use another name (such as "Two-Wire Interface", TWI) for
12 I2C is a multi-master bus; open drain signaling is used to arbitrate
16 The Linux I2C programming interfaces support the master side of bus
17 interactions and the slave side. The programming interface is
38 .. kernel-doc:: include/linux/i2c.h
41 .. kernel-doc:: drivers/i2c/i2c-boardinfo.c
44 .. kernel-doc:: drivers/i2c/i2c-core-base.c
47 .. kernel-doc:: drivers/i2c/i2c-core-smbus.c
/kernel/linux/linux-6.6/Documentation/devicetree/bindings/i2c/
Di2c-arb-gpio-challenge.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-arb-gpio-challenge.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
10 - Doug Anderson <dianders@chromium.org>
11 - Peter Rosin <peda@axentia.se>
15 the master of an I2C bus in a multimaster situation.
18 standard I2C multi-master rules. Using GPIOs is generally useful in the case
25 problems (hard to tell if i2c issues were caused by one master, another,
[all …]
/kernel/linux/linux-6.6/arch/arm/mach-at91/
Dpm_suspend.S1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * arch/arm/mach-at91/pm_slow_clock.S
13 #include "pm_data-offsets.h"
16 .arch armv7-a
28 * Wait until master clock is ready (after switching master clock source)
30 * @r_mckid: register holding master clock identifier
32 * Side effects: overwrites r7, r8
49 * Wait until master oscillator has stabilized.
51 * Side effects: overwrites r7
62 * Side effects: overwrites r7
[all …]
/kernel/linux/linux-6.6/Documentation/devicetree/bindings/soc/qcom/
Dqcom,smp2p.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andy Gross <agross@kernel.org>
11 - Bjorn Andersson <bjorn.andersson@linaro.org>
12 - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
16 of a single 32-bit value between two processors. Each value has a single
17 writer (the local side) and a single reader (the remote side). Values are
35 $ref: /schemas/types.yaml#/definitions/phandle-array
37 - items:
[all …]
/kernel/linux/linux-5.10/include/uapi/linux/hdlc/
Dioctl.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
9 #define CLOCK_EXT 1 /* External TX and RX clock - DTE */
10 #define CLOCK_INT 2 /* Internal TX and RX clock - DCE */
27 #define PARITY_CRC16_PR0_CCITT 4 /* CRC16, initial 0x0000, ITU-T version */
28 #define PARITY_CRC16_PR1_CCITT 5 /* CRC16, initial 0xFFFF, ITU-T version */
35 #define LMI_CCITT 3 /* ITU-T Annex A */
42 unsigned int clock_type; /* internal, external, TX-internal etc. */
48 unsigned int clock_type; /* internal, external, TX-internal etc. */
65 unsigned short dce; /* 1 for DCE (network side) operation */
74 char master[IFNAMSIZ]; /* Name of master FRAD device */ member
[all …]
/kernel/linux/linux-6.6/include/uapi/linux/hdlc/
Dioctl.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
9 #define CLOCK_EXT 1 /* External TX and RX clock - DTE */
10 #define CLOCK_INT 2 /* Internal TX and RX clock - DCE */
27 #define PARITY_CRC16_PR0_CCITT 4 /* CRC16, initial 0x0000, ITU-T version */
28 #define PARITY_CRC16_PR1_CCITT 5 /* CRC16, initial 0xFFFF, ITU-T version */
35 #define LMI_CCITT 3 /* ITU-T Annex A */
42 unsigned int clock_type; /* internal, external, TX-internal etc. */
48 unsigned int clock_type; /* internal, external, TX-internal etc. */
65 unsigned short dce; /* 1 for DCE (network side) operation */
74 char master[IFNAMSIZ]; /* Name of master FRAD device */ member
[all …]
/kernel/linux/linux-5.10/Documentation/devicetree/bindings/soc/qcom/
Dqcom,smp2p.txt4 a single 32-bit value between two processors. Each value has a single writer
5 (the local side) and a single reader (the remote side). Values are uniquely
9 - compatible:
15 - interrupts:
17 Value type: <prop-encoded-array>
20 - mboxes:
22 Value type: <prop-encoded-array>
26 - qcom,ipc:
28 Value type: <prop-encoded-array>
31 - phandle to a syscon node representing the apcs registers
[all …]
/kernel/linux/linux-6.6/sound/soc/generic/
Daudio-graph-card2-custom-sample.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * audio-graph-card2-custom-sample.dtsi
8 * This sample indicates how to use audio-graph-card2 and its
9 * custom driver. "audio-graph-card2-custom-sample" is the custome driver
10 * which is using audio-graph-card2.
15 * #include "../../../../../sound/soc/generic/audio-graph-card2-custom-sample.dtsi"
23 * "compatible" on each test-component. see below
26 * - compatible = "test-cpu";
27 * + compatible = "test-cpu-verbose";
32 * - compatible = "test-codec";
[all …]
/kernel/linux/linux-5.10/drivers/tty/
Dpty.c1 // SPDX-License-Identifier: GPL-2.0
5 * Added support for a Unix98-style ptmx device.
6 * -- C. Scott Ananian <cananian@alumni.princeton.edu>, 14-Jan-1998
50 if (tty->driver->subtype == PTY_TYPE_MASTER) in pty_close()
51 WARN_ON(tty->count > 1); in pty_close()
55 if (tty->count > 2) in pty_close()
58 set_bit(TTY_IO_ERROR, &tty->flags); in pty_close()
59 wake_up_interruptible(&tty->read_wait); in pty_close()
60 wake_up_interruptible(&tty->write_wait); in pty_close()
61 spin_lock_irq(&tty->ctrl_lock); in pty_close()
[all …]
/kernel/linux/linux-6.6/drivers/tty/
Dpty.c1 // SPDX-License-Identifier: GPL-2.0
5 * Added support for a Unix98-style ptmx device.
6 * -- C. Scott Ananian <cananian@alumni.princeton.edu>, 14-Jan-1998
49 if (tty->driver->subtype == PTY_TYPE_MASTER) in pty_close()
50 WARN_ON(tty->count > 1); in pty_close()
54 if (tty->count > 2) in pty_close()
57 set_bit(TTY_IO_ERROR, &tty->flags); in pty_close()
58 wake_up_interruptible(&tty->read_wait); in pty_close()
59 wake_up_interruptible(&tty->write_wait); in pty_close()
60 spin_lock_irq(&tty->ctrl.lock); in pty_close()
[all …]
/kernel/linux/linux-6.6/Documentation/admin-guide/
Ddevices.rst11 version in the mainline Linux kernel is the master document. Updates
13 :ref:`Documentation/process/submitting-patches.rst <submittingpatches>` document).
63 --------------------------------------
81 /dev/nfsd socksys symbolic Required by iBCS-2
82 /dev/X0R null symbolic Required by iBCS-2
85 Note: ``/dev/X0R`` is <letter X>-<digit 0>-<letter R>.
100 /dev/scd? sr? hard Alternate SCSI CD-ROM name
114 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
115 /dev/cdwriter CD-writer symbolic Current CD-writer device
138 Non-transient sockets and named pipes may exist in /dev. Common entries are:
[all …]
/kernel/linux/linux-5.10/Documentation/admin-guide/
Ddevices.rst12 mainline Linux kernel is the master document. Updates shall be sent
14 :ref:`Documentation/process/submitting-patches.rst <submittingpatches>` document).
64 --------------------------------------
82 /dev/nfsd socksys symbolic Required by iBCS-2
83 /dev/X0R null symbolic Required by iBCS-2
86 Note: ``/dev/X0R`` is <letter X>-<digit 0>-<letter R>.
101 /dev/scd? sr? hard Alternate SCSI CD-ROM name
115 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
116 /dev/cdwriter CD-writer symbolic Current CD-writer device
139 Non-transient sockets and named pipes may exist in /dev. Common entries are:
[all …]
/kernel/linux/linux-5.10/sound/pci/ca0106/
Dca0106_mixer.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
67 if (emu->spdif_enable) { in ca0106_spdif_enable()
73 val = inl(emu->port + GPIO) & ~0x101; in ca0106_spdif_enable()
74 outl(val, emu->port + GPIO); in ca0106_spdif_enable()
82 val = inl(emu->port + GPIO) | 0x101; in ca0106_spdif_enable()
83 outl(val, emu->port + GPIO); in ca0106_spdif_enable()
89 unsigned int val = emu->capture_source; in ca0106_set_capture_source()
103 ngain = emu->i2c_capture_volume[val][0]; /* Left */ in ca0106_set_i2c_capture_source()
104 ogain = emu->i2c_capture_volume[emu->i2c_capture_source][0]; /* Left */ in ca0106_set_i2c_capture_source()
[all …]
/kernel/linux/linux-5.10/include/drm/
Ddrm_audio_component.h1 // SPDX-License-Identifier: MIT
11 * struct drm_audio_component_ops - Ops implemented by DRM driver, called by hda driver
65 * struct drm_audio_component_audio_ops - Ops implemented by hda driver, called by DRM driver
85 * number to a port number in the graphics side.
89 * @master_bind: (Optional) component master bind callback
91 * Called at binding master component, for HDA codec-specific
96 * @master_unbind: (Optional) component master unbind callback
98 * Called at unbinding master component, for HDA codec-specific
105 * struct drm_audio_component - Used for direct communication between DRM and hda drivers
121 * @master_bind_complete: completion held during component master binding
/kernel/linux/linux-6.6/Documentation/gpu/
Ddrm-uapi.rst9 addition, drivers export device-specific interfaces for use by userspace
10 drivers & device-aware applications through ioctls and sysfs files.
16 Cover generic ioctls and sysfs layout here. We only need high-level
22 .. kernel-doc:: drivers/gpu/drm/drm_ioctl.c
28 Primary Nodes, DRM Master and Authentication
31 .. kernel-doc:: drivers/gpu/drm/drm_auth.c
32 :doc: master and authentication
34 .. kernel-doc:: drivers/gpu/drm/drm_auth.c
37 .. kernel-doc:: include/drm/drm_auth.h
46 .. kernel-doc:: drivers/gpu/drm/drm_lease.c
[all …]
/kernel/linux/linux-5.10/Documentation/gpu/
Ddrm-uapi.rst9 addition, drivers export device-specific interfaces for use by userspace
10 drivers & device-aware applications through ioctls and sysfs files.
16 Cover generic ioctls and sysfs layout here. We only need high-level
22 .. kernel-doc:: drivers/gpu/drm/drm_ioctl.c
28 Primary Nodes, DRM Master and Authentication
31 .. kernel-doc:: drivers/gpu/drm/drm_auth.c
32 :doc: master and authentication
34 .. kernel-doc:: drivers/gpu/drm/drm_auth.c
37 .. kernel-doc:: include/drm/drm_auth.h
40 Open-Source Userspace Requirements
[all …]
/kernel/linux/linux-6.6/sound/pci/ca0106/
Dca0106_mixer.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
67 if (emu->spdif_enable) { in ca0106_spdif_enable()
73 val = inl(emu->port + CA0106_GPIO) & ~0x101; in ca0106_spdif_enable()
74 outl(val, emu->port + CA0106_GPIO); in ca0106_spdif_enable()
82 val = inl(emu->port + CA0106_GPIO) | 0x101; in ca0106_spdif_enable()
83 outl(val, emu->port + CA0106_GPIO); in ca0106_spdif_enable()
89 unsigned int val = emu->capture_source; in ca0106_set_capture_source()
103 ngain = emu->i2c_capture_volume[val][0]; /* Left */ in ca0106_set_i2c_capture_source()
104 ogain = emu->i2c_capture_volume[emu->i2c_capture_source][0]; /* Left */ in ca0106_set_i2c_capture_source()
[all …]
/kernel/linux/linux-5.10/Documentation/devicetree/bindings/i2c/
Di2c-arb-gpio-challenge.txt1 GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
4 the master of an I2C bus in a multimaster situation.
7 the standard I2C multi-master rules. Using GPIOs is generally useful in
14 problems (hard to tell if i2c issues were caused by one master, another, or
21 others can see. These are all active low with pull-ups enabled. We'll
24 - OUR_CLAIM: output from us signaling to other hosts that we want the bus
25 - THEIR_CLAIMS: output from others signaling that they want the bus
28 sure that the other side doesn't want it also. A detailed explanation is best
43 - compatible: i2c-arb-gpio-challenge
44 - our-claim-gpio: The GPIO that we use to claim the bus.
[all …]
/kernel/linux/linux-5.10/arch/um/drivers/
Dpty.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
34 *data = ((struct pty_chan) { .announce = opts->announce, in pty_chan_init()
36 .raw = opts->raw }); in pty_chan_init()
49 err = -errno; in pts_open()
54 if (data->raw) { in pts_open()
55 CATCH_EINTR(err = tcgetattr(fd, &data->tt)); in pts_open()
65 sprintf(data->dev_name, "%s", dev); in pts_open()
66 *dev_out = data->dev_name; in pts_open()
68 if (data->announce) in pts_open()
[all …]
/kernel/linux/linux-6.6/arch/um/drivers/
Dpty.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
34 *data = ((struct pty_chan) { .announce = opts->announce, in pty_chan_init()
36 .raw = opts->raw }); in pty_chan_init()
49 err = -errno; in pts_open()
54 if (data->raw) { in pts_open()
55 CATCH_EINTR(err = tcgetattr(fd, &data->tt)); in pts_open()
65 sprintf(data->dev_name, "%s", dev); in pts_open()
66 *dev_out = data->dev_name; in pts_open()
68 if (data->announce) in pts_open()
[all …]
/kernel/linux/linux-6.6/include/drm/
Ddrm_audio_component.h1 // SPDX-License-Identifier: MIT
14 * struct drm_audio_component_ops - Ops implemented by DRM driver, called by hda driver
68 * struct drm_audio_component_audio_ops - Ops implemented by hda driver, called by DRM driver
88 * number to a port number in the graphics side.
92 * @master_bind: (Optional) component master bind callback
94 * Called at binding master component, for HDA codec-specific
99 * @master_unbind: (Optional) component master unbind callback
101 * Called at unbinding master component, for HDA codec-specific
108 * struct drm_audio_component - Used for direct communication between DRM and hda drivers
124 * @master_bind_complete: completion held during component master binding
/kernel/linux/linux-5.10/drivers/misc/
Dpti.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * pti.c - PTI driver for cJTAG data extration
27 #include <linux/intel-pti.h>
40 #define MODEM_BASE_ID 71 /* modem master ID address */
41 #define CONTROL_ID 72 /* control master ID address */
42 #define CONSOLE_ID 73 /* console master ID address */
43 #define OS_BASE_ID 74 /* base OS master ID address */
44 #define APP_BASE_ID 80 /* base App master ID address */
83 * pti_write_to_aperture()- The private write function to PTI HW.
86 * a master and channel ID.
[all …]

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