| /linux/include/dt-bindings/memory/ |
| H A D | tegra234-mc.h | 180 /* MSS internal memqual MIU7 read clients */
184 /* MSS internal memqual MIU8 read clients */
188 /* MSS internal memqual MIU9 read clients */
192 /* MSS internal memqual MIU10 read clients */
196 /* MSS internal memqual MIU11 read clients */
200 /* MSS internal memqual MIU12 read clients */
204 /* MSS internal memqual MIU13 read clients */
210 /* High-definition audio (HDA) read clients */
212 /* Host channel data read clients */
228 /* PCIE6 read clients */
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| H A D | tegra194-mc.h | 147 /* MSS internal memqual MIU7 read clients */
151 /* High-definition audio (HDA) read clients */
153 /* Host channel data read clients */
156 /* SATA read clients */
167 /* ISP read client for Crossbar A */
169 /* ISP read client 1 for Crossbar A */
175 /* XUSB_HOST read clients */
179 /* XUSB read clients */
183 /* sdmmca memory read client */
185 /* sdmmc memory read client */
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| /linux/tools/perf/pmu-events/arch/arm64/freescale/imx8mp/sys/ |
| H A D | metrics.json | 3 "BriefDescription": "bytes of all masters read from ddr",
5 "MetricExpr": "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@",
19 "BriefDescription": "bytes of a53 core read from ddr",
21 "MetricExpr": "imx8_ddr0@axid\\-read\\,axi_mask\\=0x0000\\,axi_id\\=0x0000@",
35 "BriefDescription": "bytes of supermix(m7) core read from ddr",
37 "MetricExpr": "imx8_ddr0@axid\\-read\\,axi_mask\\=0x000f\\,axi_id\\=0x0020@",
51 "BriefDescription": "bytes of gpu 3d read from ddr",
53 "MetricExpr": "imx8_ddr0@axid\\-read\\,axi_mask\\=0x0000\\,axi_id\\=0x0070@",
67 "BriefDescription": "bytes of gpu 2d read from ddr",
69 "MetricExpr": "imx8_ddr0@axid\\-read\\,axi_mask\\=0x0000\\,axi_id\\=0x0071@",
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| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | func-read.rst | 4 .. _func-read:
7 V4L2 read()
13 v4l2-read - Read from a V4L2 device
22 .. c:function:: ssize_t read( int fd, void *buf, size_t count )
34 Max number of bytes to read
39 :c:func:`read()` attempts to read up to ``count`` bytes from file
42 section, see ##. If ``count`` is zero, :c:func:`read()` returns zero
45 :c:func:`read()` call will provide at most one frame (two fields)
48 By default :c:func:`read()` blocks until data becomes available. When
54 :c:func:`read()` function must also support :c:func:`select()` and
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| /linux/drivers/media/usb/gspca/ |
| H A D | spca508.c | 67 /* READ {0x0000, 0x8114} -> 0000: 00 */
91 /* READ { 0x0001, 0x8803 } -> 0000: 00 */
92 /* READ { 0x0001, 0x8802 } -> 0000: 08 */
96 /* READ { 0x0001, 0x8803 } -> 0000: 00 */
97 /* READ { 0x0001, 0x8803 } -> 0000: 00 */
98 /* READ { 0x0001, 0x8802 } -> 0000: 08 */
102 /* READ { 0x0001, 0x8803 } -> 0000: 00 */
103 /* READ { 0x0001, 0x8803 } -> 0000: 00 */
104 /* READ { 0x0001, 0x8802 } -> 0000: 08 */
108 /* READ { 0x0001, 0x8803 } -> 0000: 00 */
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| /linux/sound/firewire/dice/ |
| H A D | dice-interface.h | 10 * Generally, all registers can be read like memory, i.e., with quadlet read or
11 * block read transactions with at least quadlet-aligned offset and length.
32 * size values are measured in quadlets. Read-only.
60 * A bitmask with asynchronous events; read-only. When any event(s) happen,
77 * A name that can be customized for each device; read/write. Padded with zero
85 * The current sample rate and clock source; read/write. Whether a clock
120 * Enable streaming; read/write. Writing a non-zero value (re)starts all
128 * Status of the sample clock; read-only.
137 * Status of all clock sources; read-only.
157 * error occurred since the last time when this register was read with
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| /linux/Documentation/filesystems/spufs/ |
| H A D | spufs.rst | 44 tem calls like read(2) or write(2), but often support only a subset of
49 All files that support the read(2) operation also support readv(2) and
57 possible operations, e.g. read access on the wbox file.
68 read(2), pread(2), write(2), pwrite(2), lseek(2)
81 The first SPU to CPU communication mailbox. This file is read-only and
82 can be read in units of 32 bits. The file can only be used in non-
86 read(2)
87 If a count smaller than four is requested, read returns -1 and
90 When data has been read successfully, four bytes are placed in
96 the first mailbox file, but can be read in blocking I/O mode, and the
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-platform-dfl-fme | 5 Description: Read-only. One DFL FPGA device may have more than 1
7 number of ports on the FPGA device when read it.
13 Description: Read-only. It returns Bitstream (static FPGA region)
21 Description: Read-only. It returns Bitstream (static FPGA region) meta
29 Description: Read-only. It returns cache size of this FPGA device.
35 Description: Read-only. It returns fabric version of this FPGA device.
43 Description: Read-only. It returns socket_id to indicate which socket
52 Description: Read-Write. Read this file for errors detected on pcie0 link.
61 Description: Read-Write. Read this file for errors detected on pcie1 link.
70 Description: Read-only. It returns non-fatal errors detected.
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| H A D | sysfs-driver-ufs | 23 The file is read only.
33 The file is read only.
43 The file is read only.
54 The file is read only.
64 The file is read only.
75 The file is read only.
86 The file is read only.
93 descriptor could be read after partial initialization phase
98 The file is read only.
109 The file is read only.
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| H A D | sysfs-bus-coresight-devices-etb10 | 26 Description: (Read) Defines the depth, in words, of the trace RAM in powers of
27 2. The value is read directly from HW register RDP, 0x004.
33 Description: (Read) Shows the value held by the ETB status register. The value
34 is read directly from HW register STS, 0x00C.
40 Description: (Read) Shows the value held by the ETB RAM Read Pointer register
41 that is used to read entries from the Trace RAM over the APB
42 interface. The value is read directly from HW register RRP,
49 Description: (Read) Shows the value held by the ETB RAM Write Pointer register
51 the CoreSight bus into the Trace RAM. The value is read directly
58 Description: (Read) Similar to "trigger_cntr" above except that this value is
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| H A D | sysfs-platform-dfl-port | 5 Description: Read-only. It returns id of this port. One DFL FPGA device
13 Description: Read-only. User can program different PR bitstreams to FPGA
22 Description: Read-only. It reports the APx (AFU Power) state, different APx
30 Description: Read-write. Read this file for AP1 (AFU Power State 1) event.
38 Description: Read-write. Read this file for AP2 (AFU Power State 2) event.
46 Description: Read-write. Read or set AFU latency tolerance reporting value.
61 Description: Read-only. Read this file to get the status of issued command
75 Description: Read-only. Read this file to get the status of issued command
82 Description: Read-Write. Read this file to get errors detected on port and
93 Description: Read-only. Read this file to get the first error detected by
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| H A D | debugfs-scmi-raw | 9 Any subsequently received response can be read from this same
12 and sent while the replies are read back one message at time
24 Any subsequently received response can be read from this same
26 Any additional delayed response received afterwards can be read
30 and sent while the replies are read back one message at time
43 Any subsequently received response can be read from this same
46 and sent while the replies are read back one message at time
60 Any subsequently received response can be read from this same
62 Any additional delayed response received afterwards can be read
66 and sent while the replies are read back one message at time
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| H A D | sysfs-class-watchdog | 5 It is a read only file. It contains status of the watchdog
13 It is a read only file. It contains options of watchdog device.
19 It is a read only file. It contains firmware version of
26 It is a read only file. It contains identity string of
33 It is a read/write file. While reading, it gives '1'
45 It is a read only file. It gives active/inactive status of
52 It is a read only file. It contains watchdog device's
60 It is a read only file. It contains value of time left for
68 It is a read only file. It is read to know about current
75 It is a read only file. It specifies the time in seconds before
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| H A D | sysfs-driver-w1_therm | 5 (RW) read or write TH and TL (Temperature High an Low) alarms.
55 values after power-on. Read or write are :
63 actual resolution is read back from the chip and verified. Error
75 * If a bulk read has been triggered, it will directly
76 return the temperature computed when the bulk read
80 * If no bulk read has been triggered, it will trigger
95 *read*: return 2 lines with the hexa output data sent on the
115 (RW) trigger a bulk read conversion. read the status
117 *read*:
122 value has not been read yet
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| H A D | sysfs-bus-coresight-devices-etm4x | 15 Description: (Read) The CPU this tracing entity is associated with.
21 Description: (Read) Indicates the number of PE comparator inputs that are
28 Description: (Read) Indicates the number of address comparator pairs that are
35 Description: (Read) Indicates the number of counters that are available for
42 Description: (Read) Indicates how many external inputs are implemented.
48 Description: (Read) Indicates the number of Context ID comparators that are
55 Description: (Read) Indicates the number of VMID comparators that are available
62 Description: (Read) Indicates the number of sequencer states that are
69 Description: (Read) Indicates the number of resource selection pairs that are
76 Description: (Read) Indicates the number of single-shot comparator controls that
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| /linux/Documentation/wmi/devices/ |
| H A D | msi-wmi-platform.rst | 26 [WmiDataId(1), read, write, Description("16 bytes of data")] uint8 Bytes[16];
33 [WmiDataId(1), read, write, Description("32 bytes of data")] uint8 Bytes[32];
40 [key, read] string InstanceName;
41 [read] boolean Active;
43 [WmiMethodId(1), Implemented, read, write, Description("Return the contents of a package")]
46 [WmiMethodId(2), Implemented, read, write, Description("Set the contents of a package")]
49 [WmiMethodId(3), Implemented, read, write, Description("Return the contents of a package")]
52 [WmiMethodId(4), Implemented, read, write, Description("Set the contents of a package")]
55 [WmiMethodId(5), Implemented, read, write, Description("Return the contents of a package")]
58 [WmiMethodId(6), Implemented, read, write, Description("Set the contents of a package")]
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| /linux/drivers/net/ethernet/aquantia/atlantic/macsec/ |
| H A D | macsec_api.h | 48 /*! Read the raw table data from the specified row of the Egress CTL
51 * table_index - The table row to read (max 23).
66 /*! Read the raw table data from the specified row of the Egress
69 * table_index - The table row to read (max 47).
84 /*! Read the raw table data from the specified row of the Egress SC
87 * table_index - The table row to read (max 31).
102 /*! Read the raw table data from the specified row of the Egress SA
105 * table_index - The table row to read (max 31).
120 /*! Read the raw table data from the specified row of the Egress SA
123 * table_index - The table row to read (max 31).
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| /linux/tools/testing/selftests/bpf/verifier/ |
| H A D | ctx_sk_lookup.c | 4 /* 1-byte read from family field */
13 /* 2-byte read from family field */
18 /* 4-byte read from family field */
22 /* 1-byte read from protocol field */
31 /* 2-byte read from protocol field */
36 /* 4-byte read from protocol field */
40 /* 1-byte read from remote_ip4 field */
49 /* 2-byte read from remote_ip4 field */
54 /* 4-byte read from remote_ip4 field */
58 /* 1-byte read from remote_ip6 field */
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| /linux/drivers/rtc/ |
| H A D | rtc-ds1685.c | 35 * Standard read/write
40 * ds1685_read - read a value from an rtc register.
42 * @reg: the register address to read.
66 * Indirect read/write functions
71 * ds1685_indirect_read - read a value from an rtc register.
73 * @reg: the register address to read.
162 (rtc->read(rtc, RTC_CTRL_A) & ~(RTC_CTRL_A_DV0))); in ds1685_rtc_switch_to_bank0()
173 (rtc->read(rtc, RTC_CTRL_A) | RTC_CTRL_A_DV0)); in ds1685_rtc_switch_to_bank1()
185 * is read again in a loop until INCR is inactive.
194 (rtc->read(rtc, RTC_CTRL_B) | RTC_CTRL_B_SET)); in ds1685_rtc_begin_data_access()
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| /linux/arch/parisc/kernel/ |
| H A D | perf_asm.S | 91 ;* arg0 : rdr to be read
98 ;* arg0 : rdr to be read
114 ; read(shift in) the RDR.
173 ; RDR 2 read sequence
185 ; RDR 3 read sequence
197 ; RDR 4 read sequence
209 ; RDR 5 read sequence
221 ; RDR 6 read sequence
233 ; RDR 7 read sequence
245 ; RDR 8 read sequence
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| /linux/include/linux/mtd/ |
| H A D | spi-nor.h | 24 #define SPINOR_OP_RDSR 0x05 /* Read status register */
26 #define SPINOR_OP_RDSR2 0x3f /* Read status register 2 */
28 #define SPINOR_OP_READ 0x03 /* Read data bytes (low frequency) */
29 #define SPINOR_OP_READ_FAST 0x0b /* Read data bytes (high frequency) */
30 #define SPINOR_OP_READ_1_1_2 0x3b /* Read data bytes (Dual Output SPI) */
31 #define SPINOR_OP_READ_1_2_2 0xbb /* Read data bytes (Dual I/O SPI) */
32 #define SPINOR_OP_READ_1_1_4 0x6b /* Read data bytes (Quad Output SPI) */
33 #define SPINOR_OP_READ_1_4_4 0xeb /* Read data bytes (Quad I/O SPI) */
34 #define SPINOR_OP_READ_1_1_8 0x8b /* Read data bytes (Octal Output SPI) */
35 #define SPINOR_OP_READ_1_8_8 0xcb /* Read data bytes (Octal I/O SPI) */
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| /linux/tools/testing/selftests/kvm/lib/ |
| H A D | io.c | 82 /* Test Read
84 * A wrapper for read(2), that automatically handles the following
88 * + Read of less than requested amount
91 * For each of the above, an additional read is performed to automatically
93 * There are also many cases where read(2) can return an unexpected
96 * contains at least the number of requested bytes to be read. A TEST_ASSERT
98 * data is read. It is the callers responsibility to assure that sufficient
101 * Note, for function signature compatibility with read(2), this function
102 * returns the number of bytes read, but that value will always be equal
105 * read(2) or cause a TEST_ASSERT failure.
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| /linux/arch/arm/mach-sa1100/include/mach/ |
| H A D | SA-1100.h | 81 * Controller (UDC) Control Register (read/write).
83 * Controller (UDC) Address Register (read/write).
86 * (read/write).
89 * (read/write).
92 * (read/write).
95 * (output, read/write).
98 * (input, read/write).
101 * (read/write).
104 * (read).
106 * Controller (UDC) Data Register (read/write).
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| /linux/Documentation/hid/ |
| H A D | intel-thc-hid.rst | 115 PIO can let driver manually write/read data to/from Touch ICs, instead, THC DMA can
116 automatically write/read data without driver involved.
177 directly, THC needs to use PIO read (by setting SubIP read opcode) to I2C subIP APB registers'
198 read or PIO write.
200 When THC is configured to SPI mode, opcodes are used for determining the read/write IO mode.
206 0x0B Read Single I/O
208 0xBB Read Dual I/O
210 0xEB Read Quad I/O
220 I2C SubIP APB register read, I2C SubIP APB register write, I2C touch IC device read,
221 I2C touch IC device write, I2C touch IC device write followed by read.
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| /linux/drivers/comedi/drivers/ |
| H A D | pcl730.c | 40 * offset to the (*insn_bits) functions to read/write the correct
45 * BASE+0 Isolated outputs 0-7 (write) / inputs 0-7 (read)
46 * BASE+1 Isolated outputs 8-15 (write) / inputs 8-15 (read)
47 * BASE+2 TTL outputs 0-7 (write) / inputs 0-7 (read)
48 * BASE+3 TTL outputs 8-15 (write) / inputs 8-15 (read)
54 * BASE+0 Isolated outputs 0-7 (write) (read back on p8r8dio)
55 * BASE+1 Isolated inputs 0-7 (read)
59 * BASE+0 Isolated outputs 0-7 (write) (read back)
60 * BASE+1 Isolated outputs 8-15 (write) (read back)
61 * BASE+2 Isolated inputs 0-7 (read)
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