1 /* 2 * This header was generated from the Linux kernel headers by update_headers.py, 3 * to provide necessary information from kernel to userspace, such as constants, 4 * structures, and macros, and thus, contains no copyrightable information. 5 */ 6 #ifndef SPIDEV_H 7 #define SPIDEV_H 8 #include <linux/types.h> 9 #include <linux/ioctl.h> 10 #define SPI_CPHA 0x01 11 #define SPI_CPOL 0x02 12 #define SPI_MODE_0 (0|0) 13 #define SPI_MODE_1 (0|SPI_CPHA) 14 #define SPI_MODE_2 (SPI_CPOL|0) 15 #define SPI_MODE_3 (SPI_CPOL|SPI_CPHA) 16 #define SPI_CS_HIGH 0x04 17 #define SPI_LSB_FIRST 0x08 18 #define SPI_3WIRE 0x10 19 #define SPI_LOOP 0x20 20 #define SPI_NO_CS 0x40 21 #define SPI_READY 0x80 22 #define SPI_TX_DUAL 0x100 23 #define SPI_TX_QUAD 0x200 24 #define SPI_RX_DUAL 0x400 25 #define SPI_RX_QUAD 0x800 26 #define SPI_IOC_MAGIC 'k' 27 struct spi_ioc_transfer { 28 __u64 tx_buf; 29 __u64 rx_buf; 30 __u32 len; 31 __u32 speed_hz; 32 __u16 delay_usecs; 33 __u8 bits_per_word; 34 __u8 cs_change; 35 __u8 tx_nbits; 36 __u8 rx_nbits; 37 __u16 pad; 38 39 }; 40 #define SPI_MSGSIZE(N) \ 41 ((((N)*(sizeof (struct spi_ioc_transfer))) < (1 << _IOC_SIZEBITS)) \ 42 ? ((N)*(sizeof (struct spi_ioc_transfer))) : 0) 43 #define SPI_IOC_MESSAGE(N) _IOW(SPI_IOC_MAGIC, 0, char[SPI_MSGSIZE(N)]) 44 #define SPI_IOC_RD_MODE _IOR(SPI_IOC_MAGIC, 1, __u8) 45 #define SPI_IOC_WR_MODE _IOW(SPI_IOC_MAGIC, 1, __u8) 46 #define SPI_IOC_RD_LSB_FIRST _IOR(SPI_IOC_MAGIC, 2, __u8) 47 #define SPI_IOC_WR_LSB_FIRST _IOW(SPI_IOC_MAGIC, 2, __u8) 48 #define SPI_IOC_RD_BITS_PER_WORD _IOR(SPI_IOC_MAGIC, 3, __u8) 49 #define SPI_IOC_WR_BITS_PER_WORD _IOW(SPI_IOC_MAGIC, 3, __u8) 50 #define SPI_IOC_RD_MAX_SPEED_HZ _IOR(SPI_IOC_MAGIC, 4, __u32) 51 #define SPI_IOC_WR_MAX_SPEED_HZ _IOW(SPI_IOC_MAGIC, 4, __u32) 52 #define SPI_IOC_RD_MODE32 _IOR(SPI_IOC_MAGIC, 5, __u32) 53 #define SPI_IOC_WR_MODE32 _IOW(SPI_IOC_MAGIC, 5, __u32) 54 #endif 55