diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-10-17 09:32:49 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-10-17 09:32:49 -0300 |
commit | 214e2ca2b82d335935a861c253fe94c61ad77aad (patch) | |
tree | eee42ff74d10470789d919b8499737ad0e919360 /include/linux/spi/spidev.h | |
parent | 1fdead8ad31d3aa833bc37739273fcde89ace93c (diff) | |
parent | ddffeb8c4d0331609ef2581d84de4d763607bd37 (diff) |
Merge tag 'v3.7-rc1' into staging/for_v3.8
Linux 3.7-rc1
* tag 'v3.7-rc1': (9579 commits)
Linux 3.7-rc1
x86, boot: Explicitly include autoconf.h for hostprogs
perf: Fix UAPI fallout
ARM: config: make sure that platforms are ordered by option string
ARM: config: sort select statements alphanumerically
UAPI: (Scripted) Disintegrate include/linux/byteorder
UAPI: (Scripted) Disintegrate include/linux
UAPI: Unexport linux/blk_types.h
UAPI: Unexport part of linux/ppp-comp.h
perf: Handle new rbtree implementation
procfs: don't need a PATH_MAX allocation to hold a string representation of an int
vfs: embed struct filename inside of names_cache allocation if possible
audit: make audit_inode take struct filename
vfs: make path_openat take a struct filename pointer
vfs: turn do_path_lookup into wrapper around struct filename variant
audit: allow audit code to satisfy getname requests from its names_list
vfs: define struct filename and have getname() return it
btrfs: Fix compilation with user namespace support enabled
userns: Fix posix_acl_file_xattr_userns gid conversion
userns: Properly print bluetooth socket uids
...
Diffstat (limited to 'include/linux/spi/spidev.h')
-rw-r--r-- | include/linux/spi/spidev.h | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/include/linux/spi/spidev.h b/include/linux/spi/spidev.h deleted file mode 100644 index 52d9ed01855..00000000000 --- a/include/linux/spi/spidev.h +++ /dev/null @@ -1,131 +0,0 @@ -/* - * include/linux/spi/spidev.h - * - * Copyright (C) 2006 SWAPP - * Andrea Paterniani <a.paterniani@swapp-eng.it> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef SPIDEV_H -#define SPIDEV_H - -#include <linux/types.h> - -/* User space versions of kernel symbols for SPI clocking modes, - * matching <linux/spi/spi.h> - */ - -#define SPI_CPHA 0x01 -#define SPI_CPOL 0x02 - -#define SPI_MODE_0 (0|0) -#define SPI_MODE_1 (0|SPI_CPHA) -#define SPI_MODE_2 (SPI_CPOL|0) -#define SPI_MODE_3 (SPI_CPOL|SPI_CPHA) - -#define SPI_CS_HIGH 0x04 -#define SPI_LSB_FIRST 0x08 -#define SPI_3WIRE 0x10 -#define SPI_LOOP 0x20 -#define SPI_NO_CS 0x40 -#define SPI_READY 0x80 - -/*---------------------------------------------------------------------------*/ - -/* IOCTL commands */ - -#define SPI_IOC_MAGIC 'k' - -/** - * struct spi_ioc_transfer - describes a single SPI transfer - * @tx_buf: Holds pointer to userspace buffer with transmit data, or null. - * If no data is provided, zeroes are shifted out. - * @rx_buf: Holds pointer to userspace buffer for receive data, or null. - * @len: Length of tx and rx buffers, in bytes. - * @speed_hz: Temporary override of the device's bitrate. - * @bits_per_word: Temporary override of the device's wordsize. - * @delay_usecs: If nonzero, how long to delay after the last bit transfer - * before optionally deselecting the device before the next transfer. - * @cs_change: True to deselect device before starting the next transfer. - * - * This structure is mapped directly to the kernel spi_transfer structure; - * the fields have the same meanings, except of course that the pointers - * are in a different address space (and may be of different sizes in some - * cases, such as 32-bit i386 userspace over a 64-bit x86_64 kernel). - * Zero-initialize the structure, including currently unused fields, to - * accommodate potential future updates. - * - * SPI_IOC_MESSAGE gives userspace the equivalent of kernel spi_sync(). - * Pass it an array of related transfers, they'll execute together. - * Each transfer may be half duplex (either direction) or full duplex. - * - * struct spi_ioc_transfer mesg[4]; - * ... - * status = ioctl(fd, SPI_IOC_MESSAGE(4), mesg); - * - * So for example one transfer might send a nine bit command (right aligned - * in a 16-bit word), the next could read a block of 8-bit data before - * terminating that command by temporarily deselecting the chip; the next - * could send a different nine bit command (re-selecting the chip), and the - * last transfer might write some register values. - */ -struct spi_ioc_transfer { - __u64 tx_buf; - __u64 rx_buf; - - __u32 len; - __u32 speed_hz; - - __u16 delay_usecs; - __u8 bits_per_word; - __u8 cs_change; - __u32 pad; - - /* If the contents of 'struct spi_ioc_transfer' ever change - * incompatibly, then the ioctl number (currently 0) must change; - * ioctls with constant size fields get a bit more in the way of - * error checking than ones (like this) where that field varies. - * - * NOTE: struct layout is the same in 64bit and 32bit userspace. - */ -}; - -/* not all platforms use <asm-generic/ioctl.h> or _IOC_TYPECHECK() ... */ -#define SPI_MSGSIZE(N) \ - ((((N)*(sizeof (struct spi_ioc_transfer))) < (1 << _IOC_SIZEBITS)) \ - ? ((N)*(sizeof (struct spi_ioc_transfer))) : 0) -#define SPI_IOC_MESSAGE(N) _IOW(SPI_IOC_MAGIC, 0, char[SPI_MSGSIZE(N)]) - - -/* Read / Write of SPI mode (SPI_MODE_0..SPI_MODE_3) */ -#define SPI_IOC_RD_MODE _IOR(SPI_IOC_MAGIC, 1, __u8) -#define SPI_IOC_WR_MODE _IOW(SPI_IOC_MAGIC, 1, __u8) - -/* Read / Write SPI bit justification */ -#define SPI_IOC_RD_LSB_FIRST _IOR(SPI_IOC_MAGIC, 2, __u8) -#define SPI_IOC_WR_LSB_FIRST _IOW(SPI_IOC_MAGIC, 2, __u8) - -/* Read / Write SPI device word length (1..N) */ -#define SPI_IOC_RD_BITS_PER_WORD _IOR(SPI_IOC_MAGIC, 3, __u8) -#define SPI_IOC_WR_BITS_PER_WORD _IOW(SPI_IOC_MAGIC, 3, __u8) - -/* Read / Write SPI device default max speed hz */ -#define SPI_IOC_RD_MAX_SPEED_HZ _IOR(SPI_IOC_MAGIC, 4, __u32) -#define SPI_IOC_WR_MAX_SPEED_HZ _IOW(SPI_IOC_MAGIC, 4, __u32) - - - -#endif /* SPIDEV_H */ |