PATH:
usr
/
include
/
linux
/* ------------------------------------------------------------------------- */ /* */ /* i2c.h - definitions for the i2c-bus interface */ /* */ /* ------------------------------------------------------------------------- */ /* Copyright (C) 1995-2000 Simon G. Vogl 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ /* ------------------------------------------------------------------------- */ /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and Frodo Looijaard <frodol@dds.nl> */ #ifndef _LINUX_I2C_H #define _LINUX_I2C_H #include <linux/types.h> /** * struct i2c_msg - an I2C transaction segment beginning with START * @addr: Slave address, either seven or ten bits. When this is a ten * bit address, I2C_M_TEN must be set in @flags and the adapter * must support I2C_FUNC_10BIT_ADDR. * @flags: I2C_M_RD is handled by all adapters. No other flags may be * provided unless the adapter exported the relevant I2C_FUNC_* * flags through i2c_check_functionality(). * @len: Number of data bytes in @buf being read from or written to the * I2C slave address. For read transactions where I2C_M_RECV_LEN * is set, the caller guarantees that this buffer can hold up to * 32 bytes in addition to the initial length byte sent by the * slave (plus, if used, the SMBus PEC); and this value will be * incremented by the number of block data bytes received. * @buf: The buffer into which data is read, or from which it's written. * * An i2c_msg is the low level representation of one segment of an I2C * transaction. It is visible to drivers in the @i2c_transfer() procedure, * to userspace from i2c-dev, and to I2C adapter drivers through the * @i2c_adapter.@master_xfer() method. * * Except when I2C "protocol mangling" is used, all I2C adapters implement * the standard rules for I2C transactions. Each transaction begins with a * START. That is followed by the slave address, and a bit encoding read * versus write. Then follow all the data bytes, possibly including a byte * with SMBus PEC. The transfer terminates with a NAK, or when all those * bytes have been transferred and ACKed. If this is the last message in a * group, it is followed by a STOP. Otherwise it is followed by the next * @i2c_msg transaction segment, beginning with a (repeated) START. * * Alternatively, when the adapter supports I2C_FUNC_PROTOCOL_MANGLING then * passing certain @flags may have changed those standard protocol behaviors. * Those flags are only for use with broken/nonconforming slaves, and with * adapters which are known to support the specific mangling options they * need (one or more of IGNORE_NAK, NO_RD_ACK, NOSTART, and REV_DIR_ADDR). */ struct i2c_msg { __u16 addr; /* slave address */ __u16 flags; #define I2C_M_TEN 0x0010 /* this is a ten bit chip address */ #define I2C_M_RD 0x0001 /* read data, from slave to master */ #define I2C_M_STOP 0x8000 /* if I2C_FUNC_PROTOCOL_MANGLING */ #define I2C_M_NOSTART 0x4000 /* if I2C_FUNC_NOSTART */ #define I2C_M_REV_DIR_ADDR 0x2000 /* if I2C_FUNC_PROTOCOL_MANGLING */ #define I2C_M_IGNORE_NAK 0x1000 /* if I2C_FUNC_PROTOCOL_MANGLING */ #define I2C_M_NO_RD_ACK 0x0800 /* if I2C_FUNC_PROTOCOL_MANGLING */ #define I2C_M_RECV_LEN 0x0400 /* length will be first received byte */ __u16 len; /* msg length */ __u8 *buf; /* pointer to msg data */ }; /* To determine what functionality is present */ #define I2C_FUNC_I2C 0x00000001 #define I2C_FUNC_10BIT_ADDR 0x00000002 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_IGNORE_NAK etc. */ #define I2C_FUNC_SMBUS_PEC 0x00000008 #define I2C_FUNC_NOSTART 0x00000010 /* I2C_M_NOSTART */ #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_QUICK 0x00010000 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 #define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000 #define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000 #define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000 #define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000 #define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000 #define I2C_FUNC_SMBUS_PROC_CALL 0x00800000 #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */ #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */ #define I2C_FUNC_SMBUS_HOST_NOTIFY 0x10000000 #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \ I2C_FUNC_SMBUS_WRITE_BYTE) #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \ I2C_FUNC_SMBUS_WRITE_BYTE_DATA) #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \ I2C_FUNC_SMBUS_WRITE_WORD_DATA) #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \ I2C_FUNC_SMBUS_BYTE | \ I2C_FUNC_SMBUS_BYTE_DATA | \ I2C_FUNC_SMBUS_WORD_DATA | \ I2C_FUNC_SMBUS_PROC_CALL | \ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \ I2C_FUNC_SMBUS_I2C_BLOCK | \ I2C_FUNC_SMBUS_PEC) /* * Data for SMBus Messages */ #define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */ union i2c_smbus_data { __u8 byte; __u16 word; __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */ /* and one more for user-space compatibility */ }; /* i2c_smbus_xfer read or write markers */ #define I2C_SMBUS_READ 1 #define I2C_SMBUS_WRITE 0 /* SMBus transaction types (size parameter in the above functions) Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */ #define I2C_SMBUS_QUICK 0 #define I2C_SMBUS_BYTE 1 #define I2C_SMBUS_BYTE_DATA 2 #define I2C_SMBUS_WORD_DATA 3 #define I2C_SMBUS_PROC_CALL 4 #define I2C_SMBUS_BLOCK_DATA 5 #define I2C_SMBUS_I2C_BLOCK_BROKEN 6 #define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ #define I2C_SMBUS_I2C_BLOCK_DATA 8 #endif /* _LINUX_I2C_H */
[+]
..
[-] sysinfo.h
[edit]
[-] mroute.h
[edit]
[-] if_eql.h
[edit]
[-] serial_core.h
[edit]
[-] membarrier.h
[edit]
[-] sched.h
[edit]
[-] mei.h
[edit]
[-] bfs_fs.h
[edit]
[-] atmlec.h
[edit]
[-] v4l2-mediabus.h
[edit]
[-] videodev2.h
[edit]
[-] screen_info.h
[edit]
[-] if_slip.h
[edit]
[-] uuid.h
[edit]
[-] version.h
[edit]
[-] ipv6_route.h
[edit]
[-] ixjuser.h
[edit]
[-] pkt_cls.h
[edit]
[-] atm_he.h
[edit]
[-] raw.h
[edit]
[-] msdos_fs.h
[edit]
[-] mman.h
[edit]
[-] aio_abi.h
[edit]
[-] reboot.h
[edit]
[-] snmp.h
[edit]
[-] atm_eni.h
[edit]
[-] netfilter_bridge.h
[edit]
[-] patchkey.h
[edit]
[-] string.h
[edit]
[-] socket.h
[edit]
[+]
spi
[-] auxvec.h
[edit]
[-] sockios.h
[edit]
[-] keyboard.h
[edit]
[-] scc.h
[edit]
[-] dn.h
[edit]
[-] unistd.h
[edit]
[-] oom.h
[edit]
[-] pkt_sched.h
[edit]
[-] if_phonet.h
[edit]
[+]
byteorder
[-] if_arcnet.h
[edit]
[+]
caif
[-] fd.h
[edit]
[-] radeonfb.h
[edit]
[-] qnx4_fs.h
[edit]
[-] nfs2.h
[edit]
[-] magic.h
[edit]
[-] target_core_user.h
[edit]
[-] atm_zatm.h
[edit]
[-] pci.h
[edit]
[-] nfsacl.h
[edit]
[-] if_packet.h
[edit]
[-] arcfb.h
[edit]
[-] nfs_mount.h
[edit]
[-] fib_rules.h
[edit]
[-] atmsap.h
[edit]
[+]
dvb
[-] cciss_defs.h
[edit]
[+]
netfilter_ipv6
[-] atmdev.h
[edit]
[-] kexec.h
[edit]
[-] ipc.h
[edit]
[-] sock_diag.h
[edit]
[+]
wimax
[-] serial.h
[edit]
[-] if_link.h
[edit]
[-] route.h
[edit]
[-] if_bonding.h
[edit]
[-] auto_fs.h
[edit]
[-] pg.h
[edit]
[-] l2tp.h
[edit]
[-] perf_event.h
[edit]
[-] tcp_metrics.h
[edit]
[-] v4l2-controls.h
[edit]
[-] personality.h
[edit]
[-] dcbnl.h
[edit]
[-] netfilter_arp.h
[edit]
[-] toshiba.h
[edit]
[-] memfd.h
[edit]
[-] resource.h
[edit]
[-] tipc.h
[edit]
[-] virtio_vsock.h
[edit]
[-] atm_tcp.h
[edit]
[-] cn_proc.h
[edit]
[-] utime.h
[edit]
[-] nbd.h
[edit]
[-] netfilter_ipv6.h
[edit]
[-] meye.h
[edit]
[-] gfs2_ondisk.h
[edit]
[-] som.h
[edit]
[-] ncp_mount.h
[edit]
[-] coda.h
[edit]
[-] hw_breakpoint.h
[edit]
[-] shm.h
[edit]
[-] wanrouter.h
[edit]
[-] kernel-page-flags.h
[edit]
[-] auto_fs4.h
[edit]
[-] ppp_defs.h
[edit]
[-] tty.h
[edit]
[-] sysctl.h
[edit]
[-] joystick.h
[edit]
[-] ip.h
[edit]
[-] jffs2.h
[edit]
[-] nfs3.h
[edit]
[-] if_infiniband.h
[edit]
[-] agpgart.h
[edit]
[+]
raid
[-] blkpg.h
[edit]
[-] virtio_ids.h
[edit]
[-] udp.h
[edit]
[-] swab.h
[edit]
[-] romfs_fs.h
[edit]
[-] fb.h
[edit]
[-] kvm_para.h
[edit]
[-] btrfs.h
[edit]
[-] efs_fs_sb.h
[edit]
[-] xfrm.h
[edit]
[-] iso_fs.h
[edit]
[-] serial_reg.h
[edit]
[-] virtio_gpu.h
[edit]
[-] sound.h
[edit]
[-] errno.h
[edit]
[-] kernelcapi.h
[edit]
[-] net_tstamp.h
[edit]
[-] isdnif.h
[edit]
[-] hiddev.h
[edit]
[-] ncp_fs.h
[edit]
[-] hdlc.h
[edit]
[-] fcntl.h
[edit]
[-] if.h
[edit]
[-] minix_fs.h
[edit]
[-] hdreg.h
[edit]
[-] virtio_9p.h
[edit]
[-] coff.h
[edit]
[-] elf-em.h
[edit]
[-] mqueue.h
[edit]
[+]
tc_ematch
[-] gameport.h
[edit]
[-] if_ether.h
[edit]
[-] if_addrlabel.h
[edit]
[-] ife.h
[edit]
[-] isdn_divertif.h
[edit]
[-] rds.h
[edit]
[-] fdreg.h
[edit]
[-] pmu.h
[edit]
[-] cuda.h
[edit]
[-] stat.h
[edit]
[-] virtio_net.h
[edit]
[-] posix_types.h
[edit]
[-] cyclades.h
[edit]
[-] baycom.h
[edit]
[-] ipv6.h
[edit]
[-] net_dropmon.h
[edit]
[-] ipmi_msgdefs.h
[edit]
[+]
netfilter_arp
[-] v4l2-subdev.h
[edit]
[-] vsockmon.h
[edit]
[-] neighbour.h
[edit]
[-] sctp.h
[edit]
[-] atmppp.h
[edit]
[-] usbdevice_fs.h
[edit]
[-] dm-ioctl.h
[edit]
[-] netconf.h
[edit]
[-] v4l2-dv-timings.h
[edit]
[-] chio.h
[edit]
[-] msg.h
[edit]
[+]
netfilter_ipv4
[-] netlink.h
[edit]
[-] genetlink.h
[edit]
[-] cgroupstats.h
[edit]
[-] i8k.h
[edit]
[-] cciss_ioctl.h
[edit]
[-] major.h
[edit]
[-] nfs_fs.h
[edit]
[-] rfkill.h
[edit]
[-] atm.h
[edit]
[-] fuse.h
[edit]
[-] fsl_hypervisor.h
[edit]
[-] atalk.h
[edit]
[-] ivtv.h
[edit]
[-] nfs4_mount.h
[edit]
[-] pps.h
[edit]
[-] nubus.h
[edit]
[-] ethtool.h
[edit]
[-] hpet.h
[edit]
[-] atmmpc.h
[edit]
[-] fou.h
[edit]
[-] dccp.h
[edit]
[-] if_pppox.h
[edit]
[-] media.h
[edit]
[-] dm-log-userspace.h
[edit]
[-] ndctl.h
[edit]
[-] wmi.h
[edit]
[-] timex.h
[edit]
[-] mii.h
[edit]
[-] kd.h
[edit]
[-] if_pppol2tp.h
[edit]
[-] uinput.h
[edit]
[-] time.h
[edit]
[-] fadvise.h
[edit]
[-] phonet.h
[edit]
[-] dlm_device.h
[edit]
[-] bpf_perf_event.h
[edit]
[-] quota.h
[edit]
[-] ppdev.h
[edit]
[-] ivtvfb.h
[edit]
[-] if_plip.h
[edit]
[-] net_namespace.h
[edit]
[-] ipmi.h
[edit]
[-] vhost.h
[edit]
[-] v4l2-common.h
[edit]
[-] ultrasound.h
[edit]
[-] lp.h
[edit]
[-] wireless.h
[edit]
[-] keyctl.h
[edit]
[-] atm_idt77105.h
[edit]
[-] bt-bmc.h
[edit]
[-] netrom.h
[edit]
[-] rtc.h
[edit]
[-] types.h
[edit]
[-] qnxtypes.h
[edit]
[-] affs_hardblocks.h
[edit]
[-] if_ppp.h
[edit]
[-] prctl.h
[edit]
[-] firewire-cdev.h
[edit]
[-] sdla.h
[edit]
[-] atmbr2684.h
[edit]
[-] falloc.h
[edit]
[-] connector.h
[edit]
[+]
mmc
[-] rtnetlink.h
[edit]
[-] tty_flags.h
[edit]
[-] bpf.h
[edit]
[-] watchdog.h
[edit]
[-] bsg.h
[edit]
[-] kernel.h
[edit]
[-] reiserfs_fs.h
[edit]
[+]
can
[-] selinux_netlink.h
[edit]
[-] hdlcdrv.h
[edit]
[-] filter.h
[edit]
[-] hidraw.h
[edit]
[-] icmp.h
[edit]
[-] uio.h
[edit]
[-] if_ltalk.h
[edit]
[-] ppp-ioctl.h
[edit]
[-] vtpm_proxy.h
[edit]
[-] elfcore.h
[edit]
[-] limits.h
[edit]
[-] if_tunnel.h
[edit]
[-] if_fddi.h
[edit]
[-] uvcvideo.h
[edit]
[-] ioctl.h
[edit]
[-] capi.h
[edit]
[-] nvme_ioctl.h
[edit]
[-] dlm.h
[edit]
[-] tiocl.h
[edit]
[-] inotify.h
[edit]
[-] poll.h
[edit]
[-] rose.h
[edit]
[-] if_hippi.h
[edit]
[-] matroxfb.h
[edit]
[-] i2o-dev.h
[edit]
[-] tipc_config.h
[edit]
[-] ipsec.h
[edit]
[-] dlm_netlink.h
[edit]
[-] serio.h
[edit]
[-] cdrom.h
[edit]
[-] fanotify.h
[edit]
[-] virtio_blk.h
[edit]
[-] atmioc.h
[edit]
[-] securebits.h
[edit]
[-] bpf_common.h
[edit]
[-] if_team.h
[edit]
[-] omapfb.h
[edit]
[-] pktcdvd.h
[edit]
[-] phantom.h
[edit]
[-] atmapi.h
[edit]
[-] hyperv.h
[edit]
[-] stddef.h
[edit]
[-] vt.h
[edit]
[-] cycx_cfm.h
[edit]
[-] parport.h
[edit]
[-] ptrace.h
[edit]
[-] nfs.h
[edit]
[-] if_bridge.h
[edit]
[+]
netfilter_bridge
[-] unix_diag.h
[edit]
[-] times.h
[edit]
[-] n_r3964.h
[edit]
[-] nl80211.h
[edit]
[-] kvm.h
[edit]
[-] virtio_ring.h
[edit]
[-] bpqether.h
[edit]
[-] ip6_tunnel.h
[edit]
[-] sem.h
[edit]
[-] llc.h
[edit]
[-] omap3isp.h
[edit]
[-] virtio_types.h
[edit]
[-] xattr.h
[edit]
[-] netfilter.h
[edit]
[-] edd.h
[edit]
[-] inet_diag.h
[edit]
[-] vfio.h
[edit]
[-] un.h
[edit]
[-] termios.h
[edit]
[+]
usb
[-] firewire-constants.h
[edit]
[-] nfs4.h
[edit]
[-] atmclip.h
[edit]
[-] devlink.h
[edit]
[-] ip_vs.h
[edit]
[-] nfc.h
[edit]
[-] flat.h
[edit]
[-] elf.h
[edit]
[-] if_x25.h
[edit]
[-] mdio.h
[edit]
[-] isdn_ppp.h
[edit]
[+]
isdn
[-] cm4000_cs.h
[edit]
[-] nvram.h
[edit]
[-] param.h
[edit]
[-] dlm_plock.h
[edit]
[-] virtio_balloon.h
[edit]
[-] telephony.h
[edit]
[-] dlmconstants.h
[edit]
[-] tcp.h
[edit]
[-] futex.h
[edit]
[-] virtio_scsi.h
[edit]
[-] net.h
[edit]
[-] sonypi.h
[edit]
[-] wait.h
[edit]
[-] apm_bios.h
[edit]
[-] if_macsec.h
[edit]
[+]
hsi
[-] gigaset_dev.h
[edit]
[-] capability.h
[edit]
[-] errqueue.h
[edit]
[+]
netfilter
[-] a.out.h
[edit]
[-] utsname.h
[edit]
[-] gen_stats.h
[edit]
[-] kdev_t.h
[edit]
[-] if_vlan.h
[edit]
[-] lwtunnel.h
[edit]
[-] uhid.h
[edit]
[-] i2c-dev.h
[edit]
[-] wimax.h
[edit]
[-] openvswitch.h
[edit]
[-] virtio_input.h
[edit]
[-] sonet.h
[edit]
[+]
hdlc
[-] ppp-comp.h
[edit]
[-] veth.h
[edit]
[-] atmsvc.h
[edit]
[-] netlink_diag.h
[edit]
[-] hid.h
[edit]
[-] const.h
[edit]
[-] psample.h
[edit]
[-] vm_sockets.h
[edit]
[-] i2c.h
[edit]
[-] synclink.h
[edit]
[-] if_arp.h
[edit]
[-] pfkeyv2.h
[edit]
[-] virtio_config.h
[edit]
[-] if_fc.h
[edit]
[-] eventpoll.h
[edit]
[-] binfmts.h
[edit]
[-] soundcard.h
[edit]
[-] in6.h
[edit]
[-] b1lli.h
[edit]
[-] suspend_ioctls.h
[edit]
[-] loop.h
[edit]
[-] seccomp.h
[edit]
[-] blktrace_api.h
[edit]
[-] adfs_fs.h
[edit]
[-] netdevice.h
[edit]
[-] virtio_console.h
[edit]
[-] dqblk_xfs.h
[edit]
[-] netfilter_decnet.h
[edit]
[-] mmtimer.h
[edit]
[-] can.h
[edit]
[-] adb.h
[edit]
[-] acct.h
[edit]
[-] ax25.h
[edit]
[-] coda_psdev.h
[edit]
[-] elf-fdpic.h
[edit]
[-] virtio_rng.h
[edit]
[-] signal.h
[edit]
[-] libc-compat.h
[edit]
[-] taskstats.h
[edit]
[-] ncp_no.h
[edit]
[-] ipx.h
[edit]
[-] userfaultfd.h
[edit]
[-] mempolicy.h
[edit]
[-] icmpv6.h
[edit]
[-] atmarp.h
[edit]
[-] if_frad.h
[edit]
[-] signalfd.h
[edit]
[-] irda.h
[edit]
[-] fiemap.h
[edit]
[-] virtio_pci.h
[edit]
[-] if_cablemodem.h
[edit]
[-] in_route.h
[edit]
[-] mpls.h
[edit]
[-] input.h
[edit]
[-] nfs_idmap.h
[edit]
[-] cramfs_fs.h
[edit]
[-] ptp_clock.h
[edit]
[-] audit.h
[edit]
[-] if_tun.h
[edit]
[-] igmp.h
[edit]
[-] if_alg.h
[edit]
[-] random.h
[edit]
[-] netfilter_ipv4.h
[edit]
[-] atm_nicstar.h
[edit]
[-] packet_diag.h
[edit]
[-] x25.h
[edit]
[+]
tc_act
[-] in.h
[edit]
[-] irqnr.h
[edit]
[-] ncp.h
[edit]
[-] reiserfs_xattr.h
[edit]
[+]
iio
[-] fs.h
[edit]
[-] map_to_7segment.h
[edit]
[+]
sunrpc
[-] if_addr.h
[edit]
[-] mtio.h
[edit]
[+]
nfsd
[-] hysdn_if.h
[edit]
[-] pci_regs.h
[edit]
[-] mroute6.h
[edit]
[-] isdn.h
[edit]
[-] udf_fs_i.h
[edit]