spidev.h revision 96c1db7b9d601c31d103389cac074a6cce0d7633 
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#define SPI_CPHA 0x01
23#define SPI_CPOL 0x02
24#define SPI_MODE_0 (0 | 0)
25#define SPI_MODE_1 (0 | SPI_CPHA)
26#define SPI_MODE_2 (SPI_CPOL | 0)
27#define SPI_MODE_3 (SPI_CPOL | SPI_CPHA)
28#define SPI_CS_HIGH 0x04
29#define SPI_LSB_FIRST 0x08
30#define SPI_3WIRE 0x10
31#define SPI_LOOP 0x20
32#define SPI_NO_CS 0x40
33#define SPI_READY 0x80
34#define SPI_TX_DUAL 0x100
35#define SPI_TX_QUAD 0x200
36#define SPI_RX_DUAL 0x400
37#define SPI_RX_QUAD 0x800
38#define SPI_IOC_MAGIC 'k'
39struct spi_ioc_transfer {
40  __u64 tx_buf;
41  __u64 rx_buf;
42  __u32 len;
43  __u32 speed_hz;
44  __u16 delay_usecs;
45  __u8 bits_per_word;
46  __u8 cs_change;
47  __u8 tx_nbits;
48  __u8 rx_nbits;
49  __u16 pad;
50};
51#define SPI_MSGSIZE(N) ((((N) * (sizeof(struct spi_ioc_transfer))) < (1 << _IOC_SIZEBITS)) ? ((N) * (sizeof(struct spi_ioc_transfer))) : 0)
52#define SPI_IOC_MESSAGE(N) _IOW(SPI_IOC_MAGIC, 0, char[SPI_MSGSIZE(N)])
53#define SPI_IOC_RD_MODE _IOR(SPI_IOC_MAGIC, 1, __u8)
54#define SPI_IOC_WR_MODE _IOW(SPI_IOC_MAGIC, 1, __u8)
55#define SPI_IOC_RD_LSB_FIRST _IOR(SPI_IOC_MAGIC, 2, __u8)
56#define SPI_IOC_WR_LSB_FIRST _IOW(SPI_IOC_MAGIC, 2, __u8)
57#define SPI_IOC_RD_BITS_PER_WORD _IOR(SPI_IOC_MAGIC, 3, __u8)
58#define SPI_IOC_WR_BITS_PER_WORD _IOW(SPI_IOC_MAGIC, 3, __u8)
59#define SPI_IOC_RD_MAX_SPEED_HZ _IOR(SPI_IOC_MAGIC, 4, __u32)
60#define SPI_IOC_WR_MAX_SPEED_HZ _IOW(SPI_IOC_MAGIC, 4, __u32)
61#define SPI_IOC_RD_MODE32 _IOR(SPI_IOC_MAGIC, 5, __u32)
62#define SPI_IOC_WR_MODE32 _IOW(SPI_IOC_MAGIC, 5, __u32)
63#endif
64