dtv-scan-tables.git - Digital TV scan tables

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/* $Id$ * $URL$ * * user space i2c sturctures and defines, taken from the official kernel i2c * includes to solve the problem when compiling user space application * (lcd4linux) with kernel space includes. * Should be removed when the kernel team decides on how to solve this * user space/kernel space compilation problem in kernel 2.8 or so. * * Copyright (C) 2005 Paul Kamphuis <pk_richman@users.sourceforge.net> * Copyright (C) 2005 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> * * taken from kernel includes i2c.h and i2c-dev.h to prevent using kernel includes * Copyright (C) 1995-2000 Simon G. Vogl * With some changes from Ky�sti M�lkki <kmalkki@cc.hut.fi> and * Frodo Looijaard <frodol@dds.nl> * * This file is part of LCD4Linux. * * LCD4Linux 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, or (at your option) * any later version. * * LCD4Linux 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 _LCD4LINUX_I2C_H #define _LCD4LINUX_I2C_H typedef signed int s32; typedef signed int __s32; typedef unsigned char u8; typedef unsigned short u16; typedef unsigned char __u8; typedef unsigned short __u16; typedef unsigned int u32; typedef unsigned int __u32; /* --- General options ------------------------------------------------ */ struct i2c_msg; struct i2c_algorithm; struct i2c_adapter; struct i2c_client; struct i2c_driver; struct i2c_client_address_data; union i2c_smbus_data; /* * The master routines are the ones normally used to transmit data to devices * on a bus (or read from them). Apart from two basic transfer functions to * transmit one message at a time, a more complex version can be used to * transmit an arbitrary number of messages without interruption. */ extern int i2c_master_send(struct i2c_client *, const char *, int); extern int i2c_master_recv(struct i2c_client *, char *, int); /* Transfer num messages. */ extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msg, int num); /* * Some adapter types (i.e. PCF 8584 based ones) may support slave behaviuor. * This is not tested/implemented yet and will change in the future. */ extern int i2c_slave_send(struct i2c_client *, char *, int); extern int i2c_slave_recv(struct i2c_client *, char *, int); /* This is the very generalized SMBus access routine. You probably do not want to use this, though; one of the functions below may be much easier, and probably just as fast. Note that we use i2c_adapter here, because you do not need a specific smbus adapter to call this function. */ extern s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, unsigned short flags, char read_write, u8 command, int size, union i2c_smbus_data *data); /* Now follow the 'nice' access routines. These also document the calling conventions of smbus_access. */ /* extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value); extern s32 i2c_smbus_read_byte(struct i2c_client * client); extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value); extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command); extern s32 i2c_smbus_write_byte_data(struct i2c_client * client, u8 command, u8 value); extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command); extern s32 i2c_smbus_write_word_data(struct i2c_client * client, u8 command, u16 value); */ /* Returns the number of bytes transferred */ /* extern s32 i2c_smbus_write_block_data(struct i2c_client * client, u8 command, u8 length, u8 *values); extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, u8 command, u8 *values); */ /* * A driver is capable of handling one or more physical devices present on * I2C adapters. This information is used to inform the driver of adapter * events. */ /*flags for the driver struct: */ #define I2C_DF_NOTIFY 0x01 /* notify on bus (de/a)ttaches */ /*flags for the client struct: */ #define I2C_CLIENT_ALLOW_USE 0x01 /* Client allows access */ #define I2C_CLIENT_ALLOW_MULTIPLE_USE 0x02 /* Allow multiple access-locks */ /* on an i2c_client */ #define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */ #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ /* Must equal I2C_M_TEN below */ /* i2c adapter classes (bitmask) */ #define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */ #define I2C_CLASS_TV_ANALOG (1<<1) /* bttv + friends */ #define I2C_CLASS_TV_DIGITAL (1<<2) /* dvb cards */ #define I2C_CLASS_DDC (1<<3) /* i2c-matroxfb ? */ #define I2C_CLASS_CAM_ANALOG (1<<4) /* camera with analog CCD */ #define I2C_CLASS_CAM_DIGITAL (1<<5) /* most webcams */ #define I2C_CLASS_SOUND (1<<6) /* sound devices */ #define I2C_CLASS_ALL (UINT_MAX) /* all of the above */ /* i2c_client_address_data is the struct for holding default client * addresses for a driver and for the parameters supplied on the * command line */ struct i2c_client_address_data { unsigned short *normal_i2c; unsigned short *normal_i2c_range; unsigned short *probe; unsigned short *probe_range; unsigned short *ignore; unsigned short *ignore_range; unsigned short *force; }; /* Internal numbers to terminate lists */ #define I2C_CLIENT_END 0xfffe #define I2C_CLIENT_ISA_END 0xfffefffe /* The numbers to use to set I2C bus address */ #define ANY_I2C_BUS 0xffff #define ANY_I2C_ISA_BUS 9191 /* The length of the option lists */ #define I2C_CLIENT_MAX_OPTS 48 /* ----- functions exported by i2c.o */ /* administration... */ extern int i2c_add_adapter(struct i2c_adapter *); extern int i2c_del_adapter(struct i2c_adapter *); extern int i2c_add_driver(struct i2c_driver *); extern int i2c_del_driver(struct i2c_driver *); extern int i2c_attach_client(struct i2c_client *); extern int i2c_detach_client(struct i2c_client *); /* New function: This is to get an i2c_client-struct for controlling the client either by using i2c_control-function or having the client-module export functions that can be used with the i2c_client -struct. */ extern struct i2c_client *i2c_get_client(int driver_id, int adapter_id, struct i2c_client *prev); /* Should be used with new function extern struct i2c_client *i2c_get_client(int,int,struct i2c_client *); to make sure that client-struct is valid and that it is okay to access the i2c-client. returns -EACCES if client doesn't allow use (default) returns -EBUSY if client doesn't allow multiple use (default) and usage_count >0 */ extern int i2c_use_client(struct i2c_client *); extern int i2c_release_client(struct i2c_client *); /* call the i2c_client->command() of all attached clients with * the given arguments */ extern void i2c_clients_command(struct i2c_adapter *adap, unsigned int cmd, void *arg); /* returns -EBUSY if address has been taken, 0 if not. Note that the only other place at which this is called is within i2c_attach_client; so you can cheat by simply not registering. Not recommended, of course! */ extern int i2c_check_addr(struct i2c_adapter *adapter, int addr); /* Detect function. It iterates over all possible addresses itself. * It will only call found_proc if some client is connected at the * specific address (unless a 'force' matched); */ extern int i2c_probe(struct i2c_adapter *adapter, struct i2c_client_address_data *address_data, int (*found_proc) (struct i2c_adapter *, int, int)); /* An ioctl like call to set div. parameters of the adapter. */ extern int i2c_control(struct i2c_client *, unsigned int, unsigned long); /* This call returns a unique low identifier for each registered adapter, * or -1 if the adapter was not registered. */ extern int i2c_adapter_id(struct i2c_adapter *adap); extern struct i2c_adapter *i2c_get_adapter(int id); extern void i2c_put_adapter(struct i2c_adapter *adap); /* Return the functionality mask */ extern u32 i2c_get_functionality(struct i2c_adapter *adap); /* Return 1 if adapter supports everything we need, 0 if not. */ extern int i2c_check_functionality(struct i2c_adapter *adap, u32 func); /* * I2C Message - used for pure i2c transaction, also from /dev interface */ struct i2c_msg { __u16 addr; /* slave address */ __u16 flags; #define I2C_M_TEN 0x10 /* we have a ten bit chip address */ #define I2C_M_RD 0x01 #define I2C_M_NOSTART 0x4000 #define I2C_M_REV_DIR_ADDR 0x2000 #define I2C_M_IGNORE_NAK 0x1000 #define I2C_M_NO_RD_ACK 0x0800 __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_{REV_DIR_ADDR,NOSTART,..} */ #define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_READ_WORD_DATA_PEC 0x00000800 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC 0x00001000 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_PROC_CALL_PEC 0x00002000 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL_PEC 0x00004000 /* SMBus 2.0 */ #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_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */ #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */ #define I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC 0x40000000 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC 0x80000000 /* SMBus 2.0 */ #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_I2C_BLOCK_2 I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 #define I2C_FUNC_SMBUS_BLOCK_DATA_PEC I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC | \ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC #define I2C_FUNC_SMBUS_WORD_DATA_PEC I2C_FUNC_SMBUS_READ_WORD_DATA_PEC | \ I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC #define I2C_FUNC_SMBUS_READ_BYTE_PEC I2C_FUNC_SMBUS_READ_BYTE_DATA #define I2C_FUNC_SMBUS_WRITE_BYTE_PEC I2C_FUNC_SMBUS_WRITE_BYTE_DATA #define I2C_FUNC_SMBUS_READ_BYTE_DATA_PEC I2C_FUNC_SMBUS_READ_WORD_DATA #define I2C_FUNC_SMBUS_WRITE_BYTE_DATA_PEC I2C_FUNC_SMBUS_WRITE_WORD_DATA #define I2C_FUNC_SMBUS_BYTE_PEC I2C_FUNC_SMBUS_BYTE_DATA #define I2C_FUNC_SMBUS_BYTE_DATA_PEC I2C_FUNC_SMBUS_WORD_DATA #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_WRITE_BLOCK_DATA_PEC | \ I2C_FUNC_SMBUS_I2C_BLOCK /* * Data for SMBus Messages */ #define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */ #define I2C_SMBUS_I2C_BLOCK_MAX 32 /* Not specified but we use same structure */ union i2c_smbus_data { __u8 byte; __u16 word; __u8 block[I2C_SMBUS_BLOCK_MAX + 3]; /* block[0] is used for length */ /* one more for read length in block process call */ /* and one more for PEC */ }; /* smbus_access 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_DATA 6 #define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ #define I2C_SMBUS_BLOCK_DATA_PEC 8 /* SMBus 2.0 */ #define I2C_SMBUS_PROC_CALL_PEC 9 /* SMBus 2.0 */ #define I2C_SMBUS_BLOCK_PROC_CALL_PEC 10 /* SMBus 2.0 */ #define I2C_SMBUS_WORD_DATA_PEC 11 /* SMBus 2.0 */ /* ----- commands for the ioctl like i2c_command call: * note that additional calls are defined in the algorithm and hw * dependent layers - these can be listed here, or see the * corresponding header files. */ /* -> bit-adapter specific ioctls */ #define I2C_RETRIES 0x0701 /* number of times a device address */ /* should be polled when not */ /* acknowledging */ #define I2C_TIMEOUT 0x0702 /* set timeout - call with int */ /* this is for i2c-dev.c */ #define I2C_SLAVE 0x0703 /* Change slave address */ /* Attn.: Slave address is 7 or 10 bits */ #define I2C_SLAVE_FORCE 0x0706 /* Change slave address */ /* Attn.: Slave address is 7 or 10 bits */ /* This changes the address, even if it */ /* is already taken! */ #define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */ #define I2C_FUNCS 0x0705 /* Get the adapter functionality */ #define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only) */ #define I2C_PEC 0x0708 /* != 0 for SMBus PEC */ #if 0 #define I2C_ACK_TEST 0x0710 /* See if a slave is at a specific address */ #endif #define I2C_SMBUS 0x0720 /* SMBus-level access */ /* ... algo-bit.c recognizes */ #define I2C_UDELAY 0x0705 /* set delay in microsecs between each */ /* written byte (except address) */ #define I2C_MDELAY 0x0706 /* millisec delay between written bytes */ /* ----- I2C-DEV: char device interface stuff ------------------------- */ #define I2C_MAJOR 89 /* Device major number */ /* These defines are used for probing i2c client addresses */ /* Default fill of many variables */ #define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END} /* This is ugly. We need to evaluate I2C_CLIENT_MAX_OPTS before it is stringified */ #define I2C_CLIENT_MODPARM_AUX1(x) "1-" #x "h" #define I2C_CLIENT_MODPARM_AUX(x) I2C_CLIENT_MODPARM_AUX1(x) #define I2C_CLIENT_MODPARM I2C_CLIENT_MODPARM_AUX(I2C_CLIENT_MAX_OPTS) /* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the module header */ #define I2C_CLIENT_MODULE_PARM(var,desc) \ static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \ static unsigned int var##_num; \ /*MODULE_PARM(var,I2C_CLIENT_MODPARM);*/ \ module_param_array(var, short, &var##_num, 0); \ MODULE_PARM_DESC(var,desc) /* This is the one you want to use in your own modules */ #define I2C_CLIENT_INSMOD \ I2C_CLIENT_MODULE_PARM(probe, \ "List of adapter,address pairs to scan additionally"); \ I2C_CLIENT_MODULE_PARM(probe_range, \ "List of adapter,start-addr,end-addr triples to scan " \ "additionally"); \ I2C_CLIENT_MODULE_PARM(ignore, \ "List of adapter,address pairs not to scan"); \ I2C_CLIENT_MODULE_PARM(ignore_range, \ "List of adapter,start-addr,end-addr triples not to " \ "scan"); \ I2C_CLIENT_MODULE_PARM(force, \ "List of adapter,address pairs to boldly assume " \ "to be present"); \ static struct i2c_client_address_data addr_data = { \ .normal_i2c = normal_i2c, \ .normal_i2c_range = normal_i2c_range, \ .probe = probe, \ .probe_range = probe_range, \ .ignore = ignore, \ .ignore_range = ignore_range, \ .force = force, \ } /* Detect whether we are on the isa bus. If this returns true, all i2c access will fail! */ #define i2c_is_isa_client(clientptr) \ ((clientptr)->adapter->algo->id == I2C_ALGO_ISA) #define i2c_is_isa_adapter(adapptr) \ ((adapptr)->algo->id == I2C_ALGO_ISA) /* Some IOCTL commands are defined in <linux/i2c.h> */ /* Note: 10-bit addresses are NOT supported! */ /* This is the structure as used in the I2C_SMBUS ioctl call */ struct i2c_smbus_ioctl_data { __u8 read_write; __u8 command; __u32 size; union i2c_smbus_data *data; }; /* This is the structure as used in the I2C_RDWR ioctl call */ struct i2c_rdwr_ioctl_data { struct i2c_msg *msgs; /* pointers to i2c_msgs */ __u32 nmsgs; /* number of i2c_msgs */ }; #define I2C_RDRW_IOCTL_MAX_MSGS 42 #include <sys/ioctl.h> static inline __s32 i2c_smbus_access(int file, char read_write, __u8 command, int size, union i2c_smbus_data *data) { struct i2c_smbus_ioctl_data args; args.read_write = read_write; args.command = command; args.size = size; args.data = data; return ioctl(file, I2C_SMBUS, &args); } static inline __s32 i2c_smbus_write_quick(int file, __u8 value) { return i2c_smbus_access(file, value, 0, I2C_SMBUS_QUICK, NULL); } static inline __s32 i2c_smbus_read_byte(int file) { union i2c_smbus_data data; if (i2c_smbus_access(file, I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &data)) return -1; else return 0x0FF & data.byte; } static inline __s32 i2c_smbus_write_byte(int file, __u8 value) { return i2c_smbus_access(file, I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL); } static inline __s32 i2c_smbus_read_byte_data(int file, __u8 command) { union i2c_smbus_data data; if (i2c_smbus_access(file, I2C_SMBUS_READ, command, I2C_SMBUS_BYTE_DATA, &data)) return -1; else return 0x0FF & data.byte; } static inline __s32 i2c_smbus_write_byte_data(int file, __u8 command, __u8 value) { union i2c_smbus_data data; data.byte = value; return i2c_smbus_access(file, I2C_SMBUS_WRITE, command, I2C_SMBUS_BYTE_DATA, &data); } static inline __s32 i2c_smbus_read_word_data(int file, __u8 command) { union i2c_smbus_data data; if (i2c_smbus_access(file, I2C_SMBUS_READ, command, I2C_SMBUS_WORD_DATA, &data)) return -1; else return 0x0FFFF & data.word; } static inline __s32 i2c_smbus_write_word_data(int file, __u8 command, __u16 value) { union i2c_smbus_data data; data.word = value; return i2c_smbus_access(file, I2C_SMBUS_WRITE, command, I2C_SMBUS_WORD_DATA, &data); } static inline __s32 i2c_smbus_process_call(int file, __u8 command, __u16 value) { union i2c_smbus_data data; data.word = value; if (i2c_smbus_access(file, I2C_SMBUS_WRITE, command, I2C_SMBUS_PROC_CALL, &data)) return -1; else return 0x0FFFF & data.word; } /* Returns the number of read bytes */ static inline __s32 i2c_smbus_read_block_data(int file, __u8 command, __u8 * values) { union i2c_smbus_data data; int i; if (i2c_smbus_access(file, I2C_SMBUS_READ, command, I2C_SMBUS_BLOCK_DATA, &data)) return -1; else { for (i = 1; i <= data.block[0]; i++) values[i - 1] = data.block[i]; return data.block[0]; } } static inline __s32 i2c_smbus_write_block_data(int file, __u8 command, __u8 length, __u8 * values) { union i2c_smbus_data data; int i; if (length > 32) length = 32; for (i = 1; i <= length; i++) data.block[i] = values[i - 1]; data.block[0] = length; return i2c_smbus_access(file, I2C_SMBUS_WRITE, command, I2C_SMBUS_BLOCK_DATA, &data); } /* Returns the number of read bytes */ static inline __s32 i2c_smbus_read_i2c_block_data(int file, __u8 command, __u8 * values) { union i2c_smbus_data data; int i; if (i2c_smbus_access(file, I2C_SMBUS_READ, command, I2C_SMBUS_I2C_BLOCK_DATA, &data)) return -1; else { for (i = 1; i <= data.block[0]; i++) values[i - 1] = data.block[i]; return data.block[0]; } } static inline __s32 i2c_smbus_write_i2c_block_data(int file, __u8 command, __u8 length, __u8 * values) { union i2c_smbus_data data; int i; if (length > 32) length = 32; for (i = 1; i <= length; i++) data.block[i] = values[i - 1]; data.block[0] = length; return i2c_smbus_access(file, I2C_SMBUS_WRITE, command, I2C_SMBUS_I2C_BLOCK_DATA, &data); } /* Returns the number of read bytes */ static inline __s32 i2c_smbus_block_process_call(int file, __u8 command, __u8 length, __u8 * values) { union i2c_smbus_data data; int i; if (length > 32) length = 32; for (i = 1; i <= length; i++) data.block[i] = values[i - 1]; data.block[0] = length; if (i2c_smbus_access(file, I2C_SMBUS_WRITE, command, I2C_SMBUS_BLOCK_PROC_CALL, &data)) return -1; else { for (i = 1; i <= data.block[0]; i++) values[i - 1] = data.block[i]; return data.block[0]; } } #endif /* _LCD4LINUX_I2C_H */


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