1 /****************************************************************************
2  ****************************************************************************
3  ***
4  ***   This header was automatically generated from a Linux kernel header
5  ***   of the same name, to make information necessary for userspace to
6  ***   call into the kernel available to libc.  It contains only constants,
7  ***   structures, and macros generated from the original header, and thus,
8  ***   contains no copyrightable information.
9  ***
10  ***   To edit the content of this header, modify the corresponding
11  ***   source file (e.g. under external/kernel-headers/original/) then
12  ***   run bionic/libc/kernel/tools/update_all.py
13  ***
14  ***   Any manual change here will be lost the next time this script will
15  ***   be run. You've been warned!
16  ***
17  ****************************************************************************
18  ****************************************************************************/
19 #ifndef SPIDEV_H
20 #define SPIDEV_H
21 #include <linux/types.h>
22 #include <linux/ioctl.h>
23 #define SPI_CPHA 0x01
24 #define SPI_CPOL 0x02
25 #define SPI_MODE_0 (0 | 0)
26 #define SPI_MODE_1 (0 | SPI_CPHA)
27 #define SPI_MODE_2 (SPI_CPOL | 0)
28 #define SPI_MODE_3 (SPI_CPOL | SPI_CPHA)
29 #define SPI_CS_HIGH 0x04
30 #define SPI_LSB_FIRST 0x08
31 #define SPI_3WIRE 0x10
32 #define SPI_LOOP 0x20
33 #define SPI_NO_CS 0x40
34 #define SPI_READY 0x80
35 #define SPI_TX_DUAL 0x100
36 #define SPI_TX_QUAD 0x200
37 #define SPI_RX_DUAL 0x400
38 #define SPI_RX_QUAD 0x800
39 #define SPI_IOC_MAGIC 'k'
40 struct spi_ioc_transfer {
41   __u64 tx_buf;
42   __u64 rx_buf;
43   __u32 len;
44   __u32 speed_hz;
45   __u16 delay_usecs;
46   __u8 bits_per_word;
47   __u8 cs_change;
48   __u8 tx_nbits;
49   __u8 rx_nbits;
50   __u8 word_delay_usecs;
51   __u8 pad;
52 };
53 #define SPI_MSGSIZE(N) ((((N) * (sizeof(struct spi_ioc_transfer))) < (1 << _IOC_SIZEBITS)) ? ((N) * (sizeof(struct spi_ioc_transfer))) : 0)
54 #define SPI_IOC_MESSAGE(N) _IOW(SPI_IOC_MAGIC, 0, char[SPI_MSGSIZE(N)])
55 #define SPI_IOC_RD_MODE _IOR(SPI_IOC_MAGIC, 1, __u8)
56 #define SPI_IOC_WR_MODE _IOW(SPI_IOC_MAGIC, 1, __u8)
57 #define SPI_IOC_RD_LSB_FIRST _IOR(SPI_IOC_MAGIC, 2, __u8)
58 #define SPI_IOC_WR_LSB_FIRST _IOW(SPI_IOC_MAGIC, 2, __u8)
59 #define SPI_IOC_RD_BITS_PER_WORD _IOR(SPI_IOC_MAGIC, 3, __u8)
60 #define SPI_IOC_WR_BITS_PER_WORD _IOW(SPI_IOC_MAGIC, 3, __u8)
61 #define SPI_IOC_RD_MAX_SPEED_HZ _IOR(SPI_IOC_MAGIC, 4, __u32)
62 #define SPI_IOC_WR_MAX_SPEED_HZ _IOW(SPI_IOC_MAGIC, 4, __u32)
63 #define SPI_IOC_RD_MODE32 _IOR(SPI_IOC_MAGIC, 5, __u32)
64 #define SPI_IOC_WR_MODE32 _IOW(SPI_IOC_MAGIC, 5, __u32)
65 #endif
66