drivers/spi/spi-zynq-qspi.c

41  * QSPI Configuration Register bit Masks
44  * of the QSPI controller
57  * QSPI Configuration Register - Baud rate and target select
67  * QSPI Interrupt Registers bit Masks
72 #define ZYNQ_QSPI_IXR_RX_OVERFLOW_MASK	BIT(0) /* QSPI RX FIFO Overflow */
73 #define ZYNQ_QSPI_IXR_TXNFULL_MASK	BIT(2) /* QSPI TX FIFO Overflow */
74 #define ZYNQ_QSPI_IXR_TXFULL_MASK	BIT(3) /* QSPI TX FIFO is full */
75 #define ZYNQ_QSPI_IXR_RXNEMTY_MASK	BIT(4) /* QSPI RX FIFO Not Empty */
76 #define ZYNQ_QSPI_IXR_RXF_FULL_MASK	BIT(5) /* QSPI RX FIFO is full */
77 #define ZYNQ_QSPI_IXR_TXF_UNDRFLOW_MASK	BIT(6) /* QSPI TX FIFO Underflow */
88  * QSPI Enable Register bit Masks
90  * This register is used to enable or disable the QSPI controller
92 #define ZYNQ_QSPI_ENABLE_ENABLE_MASK	BIT(0) /* QSPI Enable Bit Mask */
95  * QSPI Linear Configuration Register
121  * struct zynq_qspi - Defines qspi driver instance
123  * @regs:		Virtual address of the QSPI controller registers
147  * Inline functions for the QSPI controller read/write
165  * The default settings of the QSPI controller's configurable parameters on
179  *	- Enable the QSPI controller
318  * zynq_qspi_config_op - Configure QSPI controller for specified transfer
322  * Sets the operational mode of QSPI controller for the next QSPI transfer and
330  * the requested frequency is higher or lower than that is supported by the QSPI
354 	/* Set the QSPI clock phase and clock polarity */  in zynq_qspi_config_op()
370  * zynq_qspi_setup_op - Configure the QSPI controller
373  * Sets the operational mode of QSPI controller for the next QSPI transfer, baud
374  * rate and divisor value to setup the requested qspi clock.
381 	struct zynq_qspi *qspi = spi_controller_get_devdata(ctlr);  in zynq_qspi_setup_op()  local
386 	clk_enable(qspi->refclk);  in zynq_qspi_setup_op()
387 	clk_enable(qspi->pclk);  in zynq_qspi_setup_op()
388 	zynq_qspi_write(qspi, ZYNQ_QSPI_ENABLE_OFFSET,  in zynq_qspi_setup_op()
463  * zynq_qspi_irq - Interrupt service routine of the QSPI controller
515  * zynq_qspi_exec_mem_op() - Initiates the QSPI transfer
624  * zynq_qspi_probe - Probe method for the QSPI driver
713 	/* QSPI controller initializations */  in zynq_qspi_probe()
735  * zynq_qspi_remove - Remove method for the QSPI driver
755 	{ .compatible = "xlnx,zynq-qspi-1.0", },
762  * zynq_qspi_driver - This structure defines the QSPI platform driver
768 		.name = "zynq-qspi",
776 MODULE_DESCRIPTION("Xilinx Zynq QSPI driver");