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/linux-6.12.1/drivers/net/ethernet/qualcomm/
Dqca_7k.c33 struct spi_transfer transfer[2]; in qcaspi_read_register() local
37 memset(transfer, 0, sizeof(transfer)); in qcaspi_read_register()
44 transfer[0].tx_buf = &tx_data; in qcaspi_read_register()
45 transfer[0].len = QCASPI_CMD_LEN; in qcaspi_read_register()
46 transfer[1].rx_buf = &rx_data; in qcaspi_read_register()
47 transfer[1].len = QCASPI_CMD_LEN; in qcaspi_read_register()
49 spi_message_add_tail(&transfer[0], &msg); in qcaspi_read_register()
55 spi_message_add_tail(&transfer[1], &msg); in qcaspi_read_register()
73 struct spi_transfer transfer[2]; in __qcaspi_write_register() local
77 memset(&transfer, 0, sizeof(transfer)); in __qcaspi_write_register()
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Dqca_spi.c97 struct spi_transfer transfer[2]; in qcaspi_write_burst() local
100 memset(&transfer, 0, sizeof(transfer)); in qcaspi_write_burst()
104 transfer[0].tx_buf = &cmd; in qcaspi_write_burst()
105 transfer[0].len = QCASPI_CMD_LEN; in qcaspi_write_burst()
106 transfer[1].tx_buf = src; in qcaspi_write_burst()
107 transfer[1].len = len; in qcaspi_write_burst()
109 spi_message_add_tail(&transfer[0], &msg); in qcaspi_write_burst()
110 spi_message_add_tail(&transfer[1], &msg); in qcaspi_write_burst()
125 struct spi_transfer transfer; in qcaspi_write_legacy() local
128 memset(&transfer, 0, sizeof(transfer)); in qcaspi_write_legacy()
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/linux-6.12.1/drivers/mtd/devices/
Dmchp23k256.c64 struct spi_transfer transfer[2] = {}; in mchp23k256_write() local
76 transfer[0].tx_buf = command; in mchp23k256_write()
77 transfer[0].len = cmd_len; in mchp23k256_write()
78 spi_message_add_tail(&transfer[0], &message); in mchp23k256_write()
80 transfer[1].tx_buf = buf; in mchp23k256_write()
81 transfer[1].len = len; in mchp23k256_write()
82 spi_message_add_tail(&transfer[1], &message); in mchp23k256_write()
103 struct spi_transfer transfer[2] = {}; in mchp23k256_read() local
112 memset(&transfer, 0, sizeof(transfer)); in mchp23k256_read()
116 transfer[0].tx_buf = command; in mchp23k256_read()
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Dsst25l.c210 struct spi_transfer transfer[2]; in sst25l_read() local
216 memset(&transfer, 0, sizeof(transfer)); in sst25l_read()
223 transfer[0].tx_buf = command; in sst25l_read()
224 transfer[0].len = sizeof(command); in sst25l_read()
225 spi_message_add_tail(&transfer[0], &message); in sst25l_read()
227 transfer[1].rx_buf = buf; in sst25l_read()
228 transfer[1].len = len; in sst25l_read()
229 spi_message_add_tail(&transfer[1], &message); in sst25l_read()
/linux-6.12.1/drivers/net/wireless/ralink/rt2x00/
Drt2x00crypto.c152 unsigned int transfer = 0; in rt2x00crypto_rx_insert_iv() local
194 memmove(skb->data + transfer, in rt2x00crypto_rx_insert_iv()
195 skb->data + transfer + (iv_len - align), in rt2x00crypto_rx_insert_iv()
197 transfer += header_length; in rt2x00crypto_rx_insert_iv()
203 memmove(skb->data + transfer, in rt2x00crypto_rx_insert_iv()
204 skb->data + transfer + iv_len + align, in rt2x00crypto_rx_insert_iv()
206 transfer += header_length; in rt2x00crypto_rx_insert_iv()
210 memcpy(skb->data + transfer, rxdesc->iv, iv_len); in rt2x00crypto_rx_insert_iv()
211 transfer += iv_len; in rt2x00crypto_rx_insert_iv()
218 memmove(skb->data + transfer, in rt2x00crypto_rx_insert_iv()
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/linux-6.12.1/drivers/usb/image/
Dmicrotek.c191 MTS_DEBUG("transfer = 0x%x context = 0x%x\n",(int)transfer,(int)context ); \
192 …status = 0x%x data-length = 0x%x sent = 0x%x\n",transfer->status,(int)context->data_length, (int)t…
208 struct mts_transfer_context* context = (struct mts_transfer_context*)transfer->context; \
361 static void mts_transfer_cleanup( struct urb *transfer );
362 static void mts_do_sg(struct urb * transfer);
365 void mts_int_submit_urb (struct urb* transfer, in mts_int_submit_urb() argument
378 usb_fill_bulk_urb(transfer, in mts_int_submit_urb()
387 res = usb_submit_urb( transfer, GFP_ATOMIC ); in mts_int_submit_urb()
391 mts_transfer_cleanup(transfer); in mts_int_submit_urb()
396 static void mts_transfer_cleanup( struct urb *transfer ) in mts_transfer_cleanup() argument
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/linux-6.12.1/Documentation/driver-api/dmaengine/
Dpxa_dma.rst9 A driver submitting a transfer and issuing it should be granted the transfer
11 This implies that the queuing doesn't wait for the previous transfer end,
13 triggered by the end of the transfer.
14 A transfer which is submitted and issued on a phy doesn't wait for a phy to
17 a new transfer.
20 Any issued transfer with DMA_PREP_INTERRUPT should trigger a callback call.
27 multimedia case, such as video capture, if a transfer is submitted and then
28 a check of the DMA channel reports a "stopped channel", the transfer should
44 assigned on the fly when the transfer is issued.
46 b) Transfer anatomy for a scatter-gather transfer
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Dprovider.rst21 will want to start a transfer, it will assert a DMA request (DRQ) by
25 parameter: the transfer size. At each clock cycle, it would transfer a
26 byte of data from one buffer to another, until the transfer size has
31 cycle. For example, we may want to transfer as much data as the
36 parameter called the transfer width.
44 transfer into smaller sub-transfers.
59 transfer, and whenever the transfer is started, the controller will go
73 transfer width and the transfer size.
118 should contain a bitmask of the supported source transfer width
121 should contain a bitmask of the supported destination transfer width
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/linux-6.12.1/drivers/spi/
Dspi-fsi.c299 struct spi_transfer *transfer) in fsi_spi_transfer_data() argument
306 if (transfer->tx_buf) { in fsi_spi_transfer_data()
310 const u8 *tx = transfer->tx_buf; in fsi_spi_transfer_data()
312 while (transfer->len > sent) { in fsi_spi_transfer_data()
314 (int)transfer->len - sent); in fsi_spi_transfer_data()
333 } else if (transfer->rx_buf) { in fsi_spi_transfer_data()
336 u8 *rx = transfer->rx_buf; in fsi_spi_transfer_data()
338 while (transfer->len > recv) { in fsi_spi_transfer_data()
355 (int)transfer->len - recv); in fsi_spi_transfer_data()
430 struct spi_transfer *transfer; in fsi_spi_transfer_one_message() local
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Dspi-mpc52xx.c86 struct spi_transfer *transfer; /* current transfer */ member
119 ms->rx_buf = ms->transfer->rx_buf; in mpc52xx_spi_start_transfer()
120 ms->tx_buf = ms->transfer->tx_buf; in mpc52xx_spi_start_transfer()
121 ms->len = ms->transfer->len; in mpc52xx_spi_start_transfer()
126 ms->cs_change = ms->transfer->cs_change; in mpc52xx_spi_start_transfer()
198 ms->transfer = container_of(ms->message->transfers.next, in mpc52xx_spi_fsmstate_idle()
257 if (ms->transfer->delay.unit == SPI_DELAY_UNIT_USECS) in mpc52xx_spi_fsmstate_transfer()
258 ms->timestamp += ms->transfer->delay.value * in mpc52xx_spi_fsmstate_transfer()
290 ms->message->actual_length += ms->transfer->len; in mpc52xx_spi_fsmstate_wait()
295 if (ms->transfer->transfer_list.next == &ms->message->transfers) { in mpc52xx_spi_fsmstate_wait()
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Dspi-stm32-qspi.c561 struct spi_transfer *transfer; in stm32_qspi_transfer_one_message() local
577 list_for_each_entry(transfer, &msg->transfers, transfer_list) { in stm32_qspi_transfer_one_message()
583 transfer->tx_buf, transfer->tx_nbits, in stm32_qspi_transfer_one_message()
584 transfer->rx_buf, transfer->rx_nbits, in stm32_qspi_transfer_one_message()
585 transfer->len, transfer->dummy_data); in stm32_qspi_transfer_one_message()
592 if (transfer->dummy_data) { in stm32_qspi_transfer_one_message()
593 op.dummy.buswidth = transfer->tx_nbits; in stm32_qspi_transfer_one_message()
594 op.dummy.nbytes = transfer->len; in stm32_qspi_transfer_one_message()
595 dummy_bytes = transfer->len; in stm32_qspi_transfer_one_message()
598 if (list_is_last(&transfer->transfer_list, &msg->transfers)) { in stm32_qspi_transfer_one_message()
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Dspi-pic32.c497 struct spi_transfer *transfer) in pic32_spi_one_transfer() argument
507 if (transfer->bits_per_word && in pic32_spi_one_transfer()
508 (transfer->bits_per_word != pic32s->bits_per_word)) { in pic32_spi_one_transfer()
509 ret = pic32_spi_set_word_size(pic32s, transfer->bits_per_word); in pic32_spi_one_transfer()
512 pic32s->bits_per_word = transfer->bits_per_word; in pic32_spi_one_transfer()
516 if (transfer->speed_hz && (transfer->speed_hz != pic32s->speed_hz)) { in pic32_spi_one_transfer()
517 pic32_spi_set_clk_rate(pic32s, transfer->speed_hz); in pic32_spi_one_transfer()
518 pic32s->speed_hz = transfer->speed_hz; in pic32_spi_one_transfer()
524 if (transfer->rx_sg.nents && transfer->tx_sg.nents) { in pic32_spi_one_transfer()
525 ret = pic32_spi_dma_transfer(pic32s, transfer); in pic32_spi_one_transfer()
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Dspi-imx.c234 struct spi_transfer *transfer) in spi_imx_can_dma() argument
247 if (transfer->len < spi_imx->devtype_data->fifo_size) in spi_imx_can_dma()
1394 struct spi_transfer *transfer) in spi_imx_dma_transfer() argument
1400 struct sg_table *tx = &transfer->tx_sg, *rx = &transfer->rx_sg; in spi_imx_dma_transfer()
1406 bytes_per_word = spi_imx_bytes_per_word(transfer->bits_per_word); in spi_imx_dma_transfer()
1461 transfer_timeout = spi_imx_calculate_timeout(spi_imx, transfer->len); in spi_imx_dma_transfer()
1485 transfer->error |= SPI_TRANS_FAIL_NO_START; in spi_imx_dma_transfer()
1490 struct spi_transfer *transfer) in spi_imx_pio_transfer() argument
1496 spi_imx->tx_buf = transfer->tx_buf; in spi_imx_pio_transfer()
1497 spi_imx->rx_buf = transfer->rx_buf; in spi_imx_pio_transfer()
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Dspi-hisi-kunpeng.c214 static u8 hisi_spi_n_bytes(struct spi_transfer *transfer) in hisi_spi_n_bytes() argument
216 if (transfer->bits_per_word <= 8) in hisi_spi_n_bytes()
218 else if (transfer->bits_per_word <= 16) in hisi_spi_n_bytes()
375 struct spi_device *spi, struct spi_transfer *transfer) in hisi_spi_transfer_one() argument
382 transfer->effective_speed_hz = in hisi_spi_transfer_one()
383 hisi_calc_effective_speed(host, chip, transfer->speed_hz); in hisi_spi_transfer_one()
386 cr |= FIELD_PREP(CR_BPW_MASK, transfer->bits_per_word - 1); in hisi_spi_transfer_one()
391 hs->n_bytes = hisi_spi_n_bytes(transfer); in hisi_spi_transfer_one()
392 hs->tx = transfer->tx_buf; in hisi_spi_transfer_one()
393 hs->tx_len = transfer->len / hs->n_bytes; in hisi_spi_transfer_one()
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/linux-6.12.1/drivers/usb/gadget/udc/
Dmax3420_udc.c202 struct spi_transfer transfer; in spi_ack_ctrl() local
206 memset(&transfer, 0, sizeof(transfer)); in spi_ack_ctrl()
211 transfer.tx_buf = txdata; in spi_ack_ctrl()
212 transfer.len = 1; in spi_ack_ctrl()
214 spi_message_add_tail(&transfer, &msg); in spi_ack_ctrl()
221 struct spi_transfer transfer; in spi_rd8_ack() local
225 memset(&transfer, 0, sizeof(transfer)); in spi_rd8_ack()
230 transfer.tx_buf = txdata; in spi_rd8_ack()
231 transfer.rx_buf = rxdata; in spi_rd8_ack()
232 transfer.len = 2; in spi_rd8_ack()
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/linux-6.12.1/drivers/pci/endpoint/functions/
Dpci-epf-mhi.c475 struct pci_epf_mhi_dma_transfer *transfer = param; in pci_epf_mhi_dma_async_callback() local
476 struct pci_epf_mhi *epf_mhi = transfer->epf_mhi; in pci_epf_mhi_dma_async_callback()
479 list_add_tail(&transfer->node, &epf_mhi->dma_list); in pci_epf_mhi_dma_async_callback()
490 struct pci_epf_mhi_dma_transfer *transfer = NULL; in pci_epf_mhi_edma_read_async() local
528 transfer = kzalloc(sizeof(*transfer), GFP_KERNEL); in pci_epf_mhi_edma_read_async()
529 if (!transfer) { in pci_epf_mhi_edma_read_async()
534 transfer->epf_mhi = epf_mhi; in pci_epf_mhi_edma_read_async()
535 transfer->paddr = dst_addr; in pci_epf_mhi_edma_read_async()
536 transfer->size = buf_info->size; in pci_epf_mhi_edma_read_async()
537 transfer->dir = DMA_FROM_DEVICE; in pci_epf_mhi_edma_read_async()
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/linux-6.12.1/drivers/cxl/core/
Dmemdev.c786 struct cxl_mbox_transfer_fw *transfer; in cxl_mem_abort_fw_xfer() local
790 transfer = kzalloc(struct_size(transfer, data, 0), GFP_KERNEL); in cxl_mem_abort_fw_xfer()
791 if (!transfer) in cxl_mem_abort_fw_xfer()
797 .size_in = sizeof(*transfer), in cxl_mem_abort_fw_xfer()
798 .payload_in = transfer, in cxl_mem_abort_fw_xfer()
803 transfer->action = CXL_FW_TRANSFER_ACTION_ABORT; in cxl_mem_abort_fw_xfer()
806 kfree(transfer); in cxl_mem_abort_fw_xfer()
835 struct cxl_mbox_transfer_fw *transfer; in cxl_fw_prepare() local
841 mds->fw.oneshot = struct_size(transfer, data, size) < in cxl_fw_prepare()
864 struct cxl_mbox_transfer_fw *transfer; in cxl_fw_write() local
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/linux-6.12.1/Documentation/userspace-api/media/v4l/
Dcolorspaces-defs.rst9 which defines the chromaticities, the default transfer function, the
11 is the transfer function identifier (enum
13 transfer functions. The third is the Y'CbCr encoding identifier (enum
87 - Use the default transfer function as defined by the colorspace.
89 - Use the Rec. 709 transfer function.
91 - Use the sRGB transfer function.
93 - Use the opRGB transfer function.
95 - Use the SMPTE 240M transfer function.
97 - Do not use a transfer function (i.e. use linear RGB values).
99 - Use the DCI-P3 transfer function.
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/linux-6.12.1/drivers/net/wireless/rsi/
Drsi_91x_usb.c49 int transfer; in rsi_usb_card_write() local
55 transfer = len; in rsi_usb_card_write()
60 &transfer, in rsi_usb_card_write()
367 u16 transfer; in rsi_usb_read_register_multiple() local
378 transfer = min_t(u16, count, RSI_USB_BUF_SIZE); in rsi_usb_read_register_multiple()
385 transfer, USB_CTRL_GET_TIMEOUT); in rsi_usb_read_register_multiple()
393 memcpy(data, buf, transfer); in rsi_usb_read_register_multiple()
394 count -= transfer; in rsi_usb_read_register_multiple()
395 data += transfer; in rsi_usb_read_register_multiple()
396 addr += transfer; in rsi_usb_read_register_multiple()
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/linux-6.12.1/Documentation/driver-api/usb/
Derror-codes.rst13 behave the same except for transfer speed dependent behaviors and the
42 ``-EINVAL`` a) Invalid transfer type specified (or not supported)
43 b) Invalid or unsupported periodic transfer interval
44 c) ISO: attempted to change transfer interval
61 (c) requested data transfer length is invalid: negative
87 A transfer's actual_length may be positive even when an error has been
132 to indicate timeout expired before the transfer
140 ``-ECOMM`` During an IN transfer, the host controller
144 ``-ENOSR`` During an OUT transfer, the host controller
161 ``-EXDEV`` ISO transfer only partially completed
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/linux-6.12.1/drivers/usb/host/
Dmax3421-hcd.c345 struct spi_transfer transfer; in spi_rd8() local
348 memset(&transfer, 0, sizeof(transfer)); in spi_rd8()
356 transfer.tx_buf = max3421_hcd->tx->data; in spi_rd8()
357 transfer.rx_buf = max3421_hcd->rx->data; in spi_rd8()
358 transfer.len = 2; in spi_rd8()
360 spi_message_add_tail(&transfer, &msg); in spi_rd8()
371 struct spi_transfer transfer; in spi_wr8() local
374 memset(&transfer, 0, sizeof(transfer)); in spi_wr8()
383 transfer.tx_buf = max3421_hcd->tx->data; in spi_wr8()
384 transfer.len = 2; in spi_wr8()
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/linux-6.12.1/Documentation/mhi/
Dtopology.rst16 It is however not involved in the actual data transfer as the data transfer
57 * Prepares the device for transfer by calling mhi_prepare_for_transfer.
58 * Initiates data transfer by calling mhi_queue_transfer.
59 * Once the data transfer is finished, calls mhi_unprepare_from_transfer to
60 end data transfer.
Dmhi.rst59 transfer rings are organized as a circular queue of Transfer Descriptors (TD).
81 Two unidirectional channels with their associated transfer rings form a
85 transfer ring.
91 Transfer Descriptors (TD). TDs are managed through transfer rings, which are
93 memory. TDs consist of one or more ring elements (or transfer blocks)::
101 Below is the basic usage of transfer rings:
103 * Host allocates memory for transfer ring.
118 data transfer completion status, command completion status, and state changes
120 memory. EDs consist of one or more ring elements (or transfer blocks)::
143 A Ring Element is a data structure used to transfer a single block
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/linux-6.12.1/drivers/iio/adc/
Dmcp320x.c87 struct spi_transfer transfer[2]; member
404 adc->transfer[0].tx_buf = &adc->tx_buf; in mcp320x_probe()
405 adc->transfer[0].len = sizeof(adc->tx_buf); in mcp320x_probe()
406 adc->transfer[1].rx_buf = adc->rx_buf; in mcp320x_probe()
407 adc->transfer[1].len = DIV_ROUND_UP(chip_info->resolution, 8); in mcp320x_probe()
412 &adc->transfer[1], 1); in mcp320x_probe()
414 spi_message_init_with_transfers(&adc->msg, adc->transfer, in mcp320x_probe()
415 ARRAY_SIZE(adc->transfer)); in mcp320x_probe()
424 adc->transfer[1].len++; in mcp320x_probe()
/linux-6.12.1/drivers/mmc/host/
Dlitex_mmc.c124 u8 cmd, u32 arg, u8 response_len, u8 transfer) in litex_mmc_send_cmd() argument
133 cmd << 8 | transfer << 5 | response_len); in litex_mmc_send_cmd()
141 (transfer != SD_CTL_DATA_XFER_NONE || in litex_mmc_send_cmd()
169 if (transfer == SD_CTL_DATA_XFER_NONE) in litex_mmc_send_cmd()
179 reg = (transfer == SD_CTL_DATA_XFER_READ) ? in litex_mmc_send_cmd()
292 unsigned int *len, bool *direct, u8 *transfer) in litex_mmc_do_dma() argument
319 *transfer = SD_CTL_DATA_XFER_READ; in litex_mmc_do_dma()
328 *transfer = SD_CTL_DATA_XFER_WRITE; in litex_mmc_do_dma()
350 u8 transfer = SD_CTL_DATA_XFER_NONE; in litex_mmc_request() local
385 litex_mmc_do_dma(host, data, &len, &direct, &transfer); in litex_mmc_request()
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