| /Linux-v6.1/arch/arm/ |
| D | Kconfig.debug | 1 # SPDX-License-Identifier: GPL-2.0
44 once the kernel has booted up - it's a one time check.
107 1 - undefined instruction events
108 2 - system calls
109 4 - invalid data aborts
110 8 - SIGSEGV faults
111 16 - SIGBUS faults
115 bool "Kernel low-level debugging functions (read help!)"
128 prompt "Kernel low-level debugging port"
132 bool "Kernel low-level debugging messages via Alpine UART0"
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| /Linux-v6.1/Documentation/infiniband/ |
| D | core_locking.rst | 7 both low-level drivers that sit below the midlayer and upper level
13 With the following exceptions, a low-level driver implementation of
17 - create_ah
18 - modify_ah
19 - query_ah
20 - destroy_ah
21 - post_send
22 - post_recv
23 - poll_cq
24 - req_notify_cq
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| /Linux-v6.1/include/linux/comedi/ |
| D | comedidev.h | 1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * header file for kernel-only structures, variables, and constants
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
13 #include <linux/dma-mapping.h>
28 * struct comedi_subdevice - Working data for a COMEDI subdevice
34 * the low-level driver.)
36 * low-level driver.)
38 * the COMEDI core and user application. (Initialized by the low-level
42 * low-level driver, or changed from 0 to 1 during post-configuration.)
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| /Linux-v6.1/security/selinux/ss/ |
| D | constraint.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
6 * beyond the type-based rules in `te' or the role-based
36 #define CEXPR_L1L2 32 /* low level 1 vs. low level 2 */
37 #define CEXPR_L1H2 64 /* low level 1 vs. high level 2 */
38 #define CEXPR_H1L2 128 /* high level 1 vs. low level 2 */
39 #define CEXPR_H1H2 256 /* high level 1 vs. high level 2 */
40 #define CEXPR_L1H1 512 /* low level 1 vs. high level 1 */
41 #define CEXPR_L2H2 1024 /* low level 2 vs. high level 2 */
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| /Linux-v6.1/Documentation/scsi/ |
| D | megaraid.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 --------
14 interfaces with the applications on one side and all the low level drivers
19 i. Avoid duplicate code from the low level drivers.
20 ii. Unburden the low level drivers from having to export the
24 multiple low level drivers.
27 ioctl commands. But this module is envisioned to handle all user space level
32 -------
41 - Jeff Garzik (jgarzik@pobox.com), 02.25.2004 LKML
45 "As Jeff hinted, if your userspace<->driver API is consistent between
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| /Linux-v6.1/include/media/ |
| D | cec-pin.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * cec-pin.h - low-level CEC pin control
15 * struct cec_pin_ops - low-level CEC pin operations
16 * @read: read the CEC pin. Returns > 0 if high, 0 if low, or an error
18 * @low: drive the CEC pin low.
19 * @high: stop driving the CEC pin. The pull-up will drive the pin
20 * high, unless someone else is driving the pin low.
26 * @read_hpd: optional. Read the HPD pin. Returns > 0 if high, 0 if low or
28 * @read_5v: optional. Read the 5V pin. Returns > 0 if high, 0 if low or
30 * @received: optional. High-level CEC message callback. Allows the driver
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| /Linux-v6.1/Documentation/driver-api/serial/ |
| D | driver.rst | 2 Low Level Serial API
10 The reference implementation is contained within amba-pl011.c.
14 Low Level Serial Hardware Driver
15 --------------------------------
17 The low level serial hardware driver is responsible for supplying port
19 by uart_ops) to the core serial driver. The low level driver is also
25 ---------------
38 -------
40 It is the responsibility of the low level hardware driver to perform the
41 necessary locking using port->lock. There are some exceptions (which
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| /Linux-v6.1/arch/arm/mach-omap2/ |
| D | cm_common.c | 1 // SPDX-License-Identifier: GPL-2.0-only
25 * cm_ll_data: function pointers to SoC-specific implementations of
41 * cm_split_idlest_reg - split CM_IDLEST reg addr into its components
48 * via the @prcm_inst and @idlest_reg_id. Returns -EINVAL upon error,
56 if (!cm_ll_data->split_idlest_reg) { in cm_split_idlest_reg()
57 WARN_ONCE(1, "cm: %s: no low-level function defined\n", in cm_split_idlest_reg()
59 return -EINVAL; in cm_split_idlest_reg()
62 ret = cm_ll_data->split_idlest_reg(idlest_reg, prcm_inst, in cm_split_idlest_reg()
64 *prcm_inst -= cm_base.offset; in cm_split_idlest_reg()
69 * omap_cm_wait_module_ready - wait for a module to leave idle or standby
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| /Linux-v6.1/drivers/gpu/drm/panfrost/ |
| D | panfrost_regs.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
6 * (C) COPYRIGHT 2010-2018 ARM Limited. All rights reserved.
12 #define GPU_L2_FEATURES 0x004 /* (RO) Level 2 cache features */
87 #define GPU_SHADER_PRESENT_LO 0x100 /* (RO) Shader core present bitmap, low word */
89 #define GPU_TILER_PRESENT_LO 0x110 /* (RO) Tiler core present bitmap, low word */
92 #define GPU_L2_PRESENT_LO 0x120 /* (RO) Level 2 cache present bitmap, low word */
93 #define GPU_L2_PRESENT_HI 0x124 /* (RO) Level 2 cache present bitmap, high word */
99 #define GPU_STACK_PRESENT_LO 0xE00 /* (RO) Core stack present bitmap, low word */
102 #define SHADER_READY_LO 0x140 /* (RO) Shader core ready bitmap, low word */
105 #define TILER_READY_LO 0x150 /* (RO) Tiler core ready bitmap, low word */
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| /Linux-v6.1/drivers/iio/adc/ |
| D | envelope-detector.c | 1 // SPDX-License-Identifier: GPL-2.0
11 * The DAC is used to find the peak level of an alternating voltage input
16 * input +------>-------|+ \
18 * .-------. | }---.
20 * | dac|-->--|- / |
24 * | irq|------<-------'
26 * '-------'
63 int level; member
64 int low; member
72 * (one-bit memory) for if the interrupt has triggered since last calling
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| /Linux-v6.1/Documentation/driver-api/gpio/ |
| D | intro.rst | 16 - The descriptor-based interface is the preferred way to manipulate GPIOs,
18 - The legacy integer-based interface which is considered deprecated (but still
21 The remainder of this document applies to the new descriptor-based interface.
23 integer-based interface.
29 A "General Purpose Input/Output" (GPIO) is a flexible software-controlled
37 System-on-Chip (SOC) processors heavily rely on GPIOs. In some cases, every
38 non-dedicated pin can be configured as a GPIO; and most chips have at least
43 Most PC southbridges have a few dozen GPIO-capable pins (with only the BIOS
48 - Output values are writable (high=1, low=0). Some chips also have
50 value might be driven, supporting "wire-OR" and similar schemes for the
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| /Linux-v6.1/Documentation/devicetree/bindings/interrupt-controller/ |
| D | img,pdc-intc.txt | 10 - compatible: Specifies the compatibility list for the interrupt controller.
11 The type shall be <string> and the value shall include "img,pdc-intc".
13 - reg: Specifies the base PDC physical address(s) and size(s) of the
14 addressable register space. The type shall be <prop-encoded-array>.
16 - interrupt-controller: The presence of this property identifies the node
19 - #interrupt-cells: Specifies the number of cells needed to encode an
22 - num-perips: Number of waking peripherals.
24 - num-syswakes: Number of SysWake inputs.
26 - interrupts: List of interrupt specifiers. The first specifier shall be the
34 - <1st-cell>: The interrupt-number that identifies the interrupt source.
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| D | snps,archs-idu-intc.txt | 1 * ARC-HS Interrupt Distribution Unit
3 This optional 2nd level interrupt controller can be used in SMP configurations
9 - compatible: "snps,archs-idu-intc"
10 - interrupt-controller: This is an interrupt controller.
11 - #interrupt-cells: Must be <1> or <2>.
18 - bits[3:0] trigger type and level flags
19 1 = low-to-high edge triggered
20 2 = NOT SUPPORTED (high-to-low edge triggered)
21 4 = active high level-sensitive <<< DEFAULT
22 8 = NOT SUPPORTED (active low level-sensitive)
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| /Linux-v6.1/sound/pci/lx6464es/ |
| D | lx_core.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* -*- linux-c -*- *
5 * low-level interface
21 /* low-level register access */
96 /* low-level dsp access */
104 /* low-level pipe handling */
118 /* low-level stream handling */
132 snd_printdd("->lx_stream_start\n"); in lx_stream_start()
139 snd_printdd("->lx_stream_pause\n"); in lx_stream_pause()
146 snd_printdd("->lx_stream_stop\n"); in lx_stream_stop()
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| /Linux-v6.1/arch/riscv/include/asm/ |
| D | suspend.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
13 /* Saved and restored by low-level functions */
15 /* Saved and restored by high-level functions */
24 /* Low-level CPU suspend entry function */
27 /* High-level CPU suspend which will save context and call finish() */
33 /* Low-level CPU resume entry function */
|
| /Linux-v6.1/Documentation/driver-api/media/ |
| D | cec-core.rst | 1 .. SPDX-License-Identifier: GPL-2.0
15 ----------------
33 ---------------------
53 will be stored in adap->priv and can be used by the adapter ops.
95 Implementing the Low-Level CEC Adapter
96 --------------------------------------
98 The following low-level adapter operations have to be implemented in
103 .. code-block:: none
107 /* Low-level callbacks */
121 /* High-level callback */
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| /Linux-v6.1/Documentation/networking/ |
| D | nfc.rst | 15 - NFC adapters management;
16 - Polling for targets;
17 - Low-level data exchange;
21 responsible for providing an interface to control operations and low-level
26 The low-level data exchange interface is provided by the new socket family
29 .. code-block:: none
31 +--------------------------------------+
33 +--------------------------------------+
35 | low-level | control
39 | +-----------+
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| /Linux-v6.1/Documentation/devicetree/bindings/power/supply/ |
| D | maxim,max17040.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
13 - $ref: power-supply.yaml#
18 - maxim,max17040
19 - maxim,max17041
20 - maxim,max17043
21 - maxim,max17044
22 - maxim,max17048
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| /Linux-v6.1/include/linux/ |
| D | tty_ldisc.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
59 * struct tty_ldisc_ops - ldisc operations
69 * by the ldisc, and set @tty->receive_room to the maximum amount of data
106 * The line discipline will deliver the characters to the low-level tty
117 * handled by the tty layer or the low-level tty driver. It is intended
119 * order for ioctls is (1) tty layer, (2) tty low-level driver, (3) line
120 * discpline. So a low-level driver can "grab" an ioctl request before
126 * Process ioctl calls from 32-bit process on 64-bit system.
129 * structure" nor tty-generic. Something private that takes an integer or
130 * a pointer to wordsize-sensitive structure belongs here, but most of
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| /Linux-v6.1/Documentation/devicetree/bindings/watchdog/ |
| D | gpio-wdt.txt | 1 * GPIO-controlled Watchdog
4 - compatible: Should contain "linux,wdt-gpio".
5 - gpios: From common gpio binding; gpio connection to WDT reset pin.
6 - hw_algo: The algorithm used by the driver. Should be one of the
8 - toggle: Either a high-to-low or a low-to-high transition clears
10 left floating or connected to a three-state buffer.
11 - level: Low or high level starts counting WDT timeout,
12 the opposite level disables the WDT. Active level is determined
14 - hw_margin_ms: Maximum time to reset watchdog circuit (milliseconds).
17 - always-running: If the watchdog timer cannot be disabled, add this flag to
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| /Linux-v6.1/Documentation/virt/ |
| D | paravirt_ops.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 including native machine -- without any hypervisors.
16 corresponding to low level critical instructions and high level
17 functionalities in various areas. pv-ops allows for optimizations at run
18 time by enabling binary patching of the low-ops critical operations
23 - simple indirect call
24 These operations correspond to high level functionality where it is
27 - indirect call which allows optimization with binary patch
28 Usually these operations correspond to low level critical instructions. They
32 - a set of macros for hand written assembly code
|
| /Linux-v6.1/arch/mips/cavium-octeon/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
11 non-CN63XXP1 hardware, so it is recommended to select "n"
40 Lock the low level TLB fast path into L2.
47 Lock the low level exception handler into L2.
54 Lock the low level interrupt handler into L2.
57 bool "Lock the 2nd level interrupt handler in L2"
61 Lock the 2nd level interrupt handler in L2.
89 will be called octeon-ilm
|
| /Linux-v6.1/drivers/staging/media/atomisp/pci/isp/kernels/ob/ob_1.0/ |
| D | ia_css_ob.host.c | 1 // SPDX-License-Identifier: GPL-2.0
42 config->isp_pipe_version = isp_pipe_version; in ia_css_ob_configure()
43 config->raw_bit_depth = raw_bit_depth; in ia_css_ob_configure()
54 = config->isp_pipe_version == 2 ? SH_CSS_BAYER_BITS : config->raw_bit_depth; in ia_css_ob_encode()
55 unsigned int scale = 16 - ob_bit_depth; in ia_css_ob_encode()
58 switch (from->mode) { in ia_css_ob_encode()
60 to->blacklevel_gr = from->level_gr >> scale; in ia_css_ob_encode()
61 to->blacklevel_r = from->level_r >> scale; in ia_css_ob_encode()
62 to->blacklevel_b = from->level_b >> scale; in ia_css_ob_encode()
63 to->blacklevel_gb = from->level_gb >> scale; in ia_css_ob_encode()
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| /Linux-v6.1/Documentation/devicetree/bindings/gpio/ |
| D | gpio-nmk.txt | 4 - compatible : Should be "st,nomadik-gpio".
5 - reg : Physical base address and length of the controller's registers.
6 - interrupts : The interrupt outputs from the controller.
7 - #gpio-cells : Should be two:
10 - bits[3:0] trigger type and level flags:
11 1 = low-to-high edge triggered.
12 2 = high-to-low edge triggered.
13 4 = active high level-sensitive.
14 8 = active low level-sensitive.
15 - gpio-controller : Marks the device node as a GPIO controller.
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| /Linux-v6.1/Documentation/cdrom/ |
| D | cdrom-standard.rst | 2 A Linux CD-ROM standard
14 Linux is probably the Unix-like operating system that supports
18 - The large list of hardware devices available for the many platforms
19 that Linux now supports (i.e., i386-PCs, Sparc Suns, etc.)
20 - The open design of the operating system, such that anybody can write a
22 - There is plenty of source code around as examples of how to write a driver.
29 This divergence of behavior has been very significant for CD-ROM
32 their drivers totally inconsistent, the writers of Linux CD-ROM
35 maintain uniform behavior across all the Linux CD-ROM drivers.
38 all the different CD-ROM device drivers for Linux. This document also
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