| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * (C) Copyright 2009 |
| * Marvell Semiconductor <www.marvell.com> |
| * Written-by: Prafulla Wadaskar <prafulla@marvell.com> |
| * |
| * Derived from drivers/spi/mpc8xxx_spi.c |
| */ |
| |
| #ifndef __KW_SPI_H__ |
| #define __KW_SPI_H__ |
| |
| /* SPI Registers on kirkwood SOC */ |
| struct kwspi_registers { |
| u32 ctrl; /* 0x10600 */ |
| u32 cfg; /* 0x10604 */ |
| u32 dout; /* 0x10608 */ |
| u32 din; /* 0x1060c */ |
| u32 irq_cause; /* 0x10610 */ |
| u32 irq_mask; /* 0x10614 */ |
| u32 timing1; /* 0x10618 */ |
| u32 timing2; /* 0x1061c */ |
| u32 dw_cfg; /* 0x10620 - Direct Write Configuration */ |
| }; |
| |
| /* Control Register */ |
| #define KWSPI_CSN_ACT (1 << 0) /* Activates serial memory interface */ |
| #define KWSPI_SMEMRDY (1 << 1) /* SerMem Data xfer ready */ |
| #define KWSPI_CS_SHIFT 2 /* chip select shift */ |
| #define KWSPI_CS_MASK 0x7 /* chip select mask */ |
| |
| /* Configuration Register */ |
| #define KWSPI_CLKPRESCL_MASK 0x1f |
| #define KWSPI_CLKPRESCL_MIN 0x12 |
| #define KWSPI_XFERLEN_1BYTE 0 |
| #define KWSPI_XFERLEN_2BYTE (1 << 5) |
| #define KWSPI_XFERLEN_MASK (1 << 5) |
| #define KWSPI_ADRLEN_1BYTE 0 |
| #define KWSPI_ADRLEN_2BYTE (1 << 8) |
| #define KWSPI_ADRLEN_3BYTE (2 << 8) |
| #define KWSPI_ADRLEN_4BYTE (3 << 8) |
| #define KWSPI_ADRLEN_MASK (3 << 8) |
| #define KWSPI_CPOL (1 << 11) |
| #define KWSPI_CPHA (1 << 12) |
| #define KWSPI_TXLSBF (1 << 13) |
| #define KWSPI_RXLSBF (1 << 14) |
| |
| /* Timing Parameters 1 Register */ |
| #define KW_SPI_TMISO_SAMPLE_OFFSET 6 |
| #define KW_SPI_TMISO_SAMPLE_MASK (0x3 << KW_SPI_TMISO_SAMPLE_OFFSET) |
| #define KW_SPI_TMISO_SAMPLE_1 (1 << KW_SPI_TMISO_SAMPLE_OFFSET) |
| #define KW_SPI_TMISO_SAMPLE_2 (2 << KW_SPI_TMISO_SAMPLE_OFFSET) |
| |
| #define KWSPI_IRQUNMASK 1 /* unmask SPI interrupt */ |
| #define KWSPI_IRQMASK 0 /* mask SPI interrupt */ |
| #define KWSPI_SMEMRDIRQ 1 /* SerMem data xfer ready irq */ |
| |
| #define KWSPI_TIMEOUT 10000 |
| |
| #endif /* __KW_SPI_H__ */ |
