zynqmp_qspi_read_op(9)
π zynqmp_qspi_read_op(9) π
okay so bestie, welcome to the Kernel API Manual β¨ β this little cutie is zynqmp_qspi_read_op(9), and honestly? it's giving "backend bestie doing the actual work while everyone else takes credit." π
πΈ NAME πΈ
zynqmp_qspi_read_op β this function sets up the GENFIFO entries and RX DMA operation. periodt. π
β¨ SYNOPSIS β¨
int zynqmp_qspi_read_op (struct zynqmp_qspi *xqspi , u8 rx_nbits , u32
genfifoentry );
like, that's the whole vibe. three args, one int coming back at you. π¦
π«Ά ARGUMENTS π«Ά
xqspiβxqspiis a pointer to the GQSPI instance. literally the main character of this whole operation, no cap. πrx_nbitsβ Receive buswidth. that's the width of the receive bus, bestie, keep up πgenfifoentryβgenfifoentryis pointer to the variable in which GENFIFO mask is returned to calling function. yes, it's an out-param situation β the mask gets handed right back to whoever called. π
β RETURN β
0 on success; error value otherwise. so like, zero is the slay outcome, anything else is a vibe check failure ππ
π SEE ALSO π
the whole friend group, gathered for you π«Ά β also, the Kernel file ./drivers/spi/spi-zynqmp-gqspi.c:
struct qspi_platform_data(9)struct zynqmp_qspi(9)zynqmp_gqspi_read(9)zynqmp_gqspi_write(9)zynqmp_gqspi_selecttarget(9)zynqmp_qspi_set_tapdelay(9)zynqmp_qspi_init_hw(9)zynqmp_qspi_copy_read_data(9)zynqmp_qspi_chipselect(9)zynqmp_qspi_selectspimode(9)zynqmp_qspi_config_op(9)zynqmp_qspi_setup_op(9)zynqmp_qspi_filltxfifo(9)zynqmp_qspi_readrxfifo(9)zynqmp_qspi_fillgenfifo(9)zynqmp_qspi_disable_dma(9)zynqmp_qspi_enable_dma(9)zynqmp_process_dma_irq(9)zynqmp_qspi_irq(9)zynqmp_qspi_setuprxdma(9)zynqmp_qspi_write_op(9)zynqmp_qspi_suspend(9)zynqmp_qspi_resume(9)zynqmp_runtime_suspend(9)zynqmp_runtime_resume(9)zynqmp_qspi_exec_op(9)zynqmp_qspi_probe(9)zynqmp_qspi_remove(9)
and that's the whole page, bestie!! π§ this little legend lives in ./drivers/spi, and the version/date stamp on it is October 2026 β so mark your calendar, mwah ππ₯
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms