| /* ------------------------------------------------------------------------- */ |
| /* */ |
| /* 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., 675 Mass Ave, Cambridge, MA 02139, 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/module.h> |
| #include <linux/types.h> |
| #include <linux/i2c-id.h> |
| #include <linux/device.h> /* for struct device */ |
| #include <asm/semaphore.h> |
| |
| /* --- For i2c-isa ---------------------------------------------------- */ |
| |
| extern void i2c_adapter_dev_release(struct device *dev); |
| extern struct device_driver i2c_adapter_driver; |
| extern struct class i2c_adapter_class; |
| extern struct bus_type i2c_bus_type; |
| |
| /* --- General options ------------------------------------------------ */ |
| |
| struct i2c_msg; |
| struct i2c_algorithm; |
| struct i2c_adapter; |
| struct i2c_client; |
| struct i2c_driver; |
| 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 *msgs, 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); |
| extern s32 i2c_smbus_write_block_data(struct i2c_client * client, |
| u8 command, u8 length, |
| u8 *values); |
| /* Returns the number of read bytes */ |
| 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. |
| */ |
| |
| struct i2c_driver { |
| struct module *owner; |
| char name[32]; |
| int id; |
| unsigned int class; |
| unsigned int flags; /* div., see below */ |
| |
| /* Notifies the driver that a new bus has appeared. This routine |
| * can be used by the driver to test if the bus meets its conditions |
| * & seek for the presence of the chip(s) it supports. If found, it |
| * registers the client(s) that are on the bus to the i2c admin. via |
| * i2c_attach_client. |
| */ |
| int (*attach_adapter)(struct i2c_adapter *); |
| int (*detach_adapter)(struct i2c_adapter *); |
| |
| /* tells the driver that a client is about to be deleted & gives it |
| * the chance to remove its private data. Also, if the client struct |
| * has been dynamically allocated by the driver in the function above, |
| * it must be freed here. |
| */ |
| int (*detach_client)(struct i2c_client *); |
| |
| /* a ioctl like command that can be used to perform specific functions |
| * with the device. |
| */ |
| int (*command)(struct i2c_client *client,unsigned int cmd, void *arg); |
| |
| struct device_driver driver; |
| struct list_head list; |
| }; |
| #define to_i2c_driver(d) container_of(d, struct i2c_driver, driver) |
| |
| #define I2C_NAME_SIZE 50 |
| |
| /* |
| * i2c_client identifies a single device (i.e. chip) that is connected to an |
| * i2c bus. The behaviour is defined by the routines of the driver. This |
| * function is mainly used for lookup & other admin. functions. |
| */ |
| struct i2c_client { |
| unsigned int flags; /* div., see below */ |
| unsigned short addr; /* chip address - NOTE: 7bit */ |
| /* addresses are stored in the */ |
| /* _LOWER_ 7 bits */ |
| struct i2c_adapter *adapter; /* the adapter we sit on */ |
| struct i2c_driver *driver; /* and our access routines */ |
| int usage_count; /* How many accesses currently */ |
| /* to the client */ |
| struct device dev; /* the device structure */ |
| struct list_head list; |
| char name[I2C_NAME_SIZE]; |
| struct completion released; |
| }; |
| #define to_i2c_client(d) container_of(d, struct i2c_client, dev) |
| |
| static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj) |
| { |
| return to_i2c_client(container_of(kobj, struct device, kobj)); |
| } |
| |
| static inline void *i2c_get_clientdata (struct i2c_client *dev) |
| { |
| return dev_get_drvdata (&dev->dev); |
| } |
| |
| static inline void i2c_set_clientdata (struct i2c_client *dev, void *data) |
| { |
| dev_set_drvdata (&dev->dev, data); |
| } |
| |
| /* |
| * The following structs are for those who like to implement new bus drivers: |
| * i2c_algorithm is the interface to a class of hardware solutions which can |
| * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584 |
| * to name two of the most common. |
| */ |
| struct i2c_algorithm { |
| /* If an adapter algorithm can't do I2C-level access, set master_xfer |
| to NULL. If an adapter algorithm can do SMBus access, set |
| smbus_xfer. If set to NULL, the SMBus protocol is simulated |
| using common I2C messages */ |
| int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs, |
| int num); |
| int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr, |
| unsigned short flags, char read_write, |
| u8 command, int size, union i2c_smbus_data * data); |
| |
| /* --- these optional/future use for some adapter types.*/ |
| int (*slave_send)(struct i2c_adapter *,char*,int); |
| int (*slave_recv)(struct i2c_adapter *,char*,int); |
| |
| /* --- ioctl like call to set div. parameters. */ |
| int (*algo_control)(struct i2c_adapter *, unsigned int, unsigned long); |
| |
| /* To determine what the adapter supports */ |
| u32 (*functionality) (struct i2c_adapter *); |
| }; |
| |
| /* |
| * i2c_adapter is the structure used to identify a physical i2c bus along |
| * with the access algorithms necessary to access it. |
| */ |
| struct i2c_adapter { |
| struct module *owner; |
| unsigned int id; |
| unsigned int class; |
| struct i2c_algorithm *algo;/* the algorithm to access the bus */ |
| void *algo_data; |
| |
| /* --- administration stuff. */ |
| int (*client_register)(struct i2c_client *); |
| int (*client_unregister)(struct i2c_client *); |
| |
| /* data fields that are valid for all devices */ |
| struct semaphore bus_lock; |
| struct semaphore clist_lock; |
| |
| int timeout; |
| int retries; |
| struct device dev; /* the adapter device */ |
| struct class_device class_dev; /* the class device */ |
| |
| int nr; |
| struct list_head clients; |
| struct list_head list; |
| char name[I2C_NAME_SIZE]; |
| struct completion dev_released; |
| struct completion class_dev_released; |
| }; |
| #define dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) |
| #define class_dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, class_dev) |
| |
| static inline void *i2c_get_adapdata (struct i2c_adapter *dev) |
| { |
| return dev_get_drvdata (&dev->dev); |
| } |
| |
| static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data) |
| { |
| dev_set_drvdata (&dev->dev, data); |
| } |
| |
| /*flags for the driver struct: */ |
| #define I2C_DF_NOTIFY 0x01 /* notify on bus (de/a)ttaches */ |
| #if 0 |
| /* this flag is gone -- there is a (optional) driver->detach_adapter |
| * callback now which can be used instead */ |
| # define I2C_DF_DUMMY 0x02 |
| #endif |
| |
| /*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 *probe; |
| unsigned short *ignore; |
| unsigned short **forces; |
| }; |
| |
| /* Internal numbers to terminate lists */ |
| #define I2C_CLIENT_END 0xfffeU |
| |
| /* The numbers to use to set I2C bus address */ |
| #define ANY_I2C_BUS 0xffff |
| #define ANY_I2C_ISA_BUS 9191 |
| |
| |
| /* ----- 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); |
| |
| extern struct i2c_adapter* i2c_get_adapter(int id); |
| extern void i2c_put_adapter(struct i2c_adapter *adap); |
| |
| |
| /* Return the functionality mask */ |
| static inline u32 i2c_get_functionality(struct i2c_adapter *adap) |
| { |
| return adap->algo->functionality(adap); |
| } |
| |
| /* Return 1 if adapter supports everything we need, 0 if not. */ |
| static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func) |
| { |
| return (func & i2c_get_functionality(adap)) == func; |
| } |
| |
| /* Return id number for a specific adapter */ |
| static inline int i2c_adapter_id(struct i2c_adapter *adap) |
| { |
| return adap->nr; |
| } |
| |
| /* |
| * 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 + 2]; /* block[0] is used for length */ |
| /* 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 */ |
| |
| #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 */ |
| /* The length of the option lists */ |
| #define I2C_CLIENT_MAX_OPTS 48 |
| |
| /* 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} |
| |
| /* 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_param_array(var, short, &var##_num, 0); \ |
| MODULE_PARM_DESC(var,desc) |
| |
| #define I2C_CLIENT_MODULE_PARM_FORCE(name) \ |
| I2C_CLIENT_MODULE_PARM(force_##name, \ |
| "List of adapter,address pairs which are " \ |
| "unquestionably assumed to contain a `" \ |
| # name "' chip") |
| |
| |
| #define I2C_CLIENT_INSMOD_COMMON \ |
| I2C_CLIENT_MODULE_PARM(probe, "List of adapter,address pairs to scan " \ |
| "additionally"); \ |
| I2C_CLIENT_MODULE_PARM(ignore, "List of adapter,address pairs not to " \ |
| "scan"); \ |
| static struct i2c_client_address_data addr_data = { \ |
| .normal_i2c = normal_i2c, \ |
| .probe = probe, \ |
| .ignore = ignore, \ |
| .forces = forces, \ |
| } |
| |
| /* These are the ones you want to use in your own drivers. Pick the one |
| which matches the number of devices the driver differenciates between. */ |
| #define I2C_CLIENT_INSMOD \ |
| I2C_CLIENT_MODULE_PARM(force, \ |
| "List of adapter,address pairs to boldly assume " \ |
| "to be present"); \ |
| static unsigned short *forces[] = { \ |
| force, \ |
| NULL \ |
| }; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #define I2C_CLIENT_INSMOD_1(chip1) \ |
| enum chips { any_chip, chip1 }; \ |
| I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ |
| "boldly assume to be present"); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ |
| static unsigned short *forces[] = { force, force_##chip1, NULL }; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #define I2C_CLIENT_INSMOD_2(chip1, chip2) \ |
| enum chips { any_chip, chip1, chip2 }; \ |
| I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ |
| "boldly assume to be present"); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ |
| static unsigned short *forces[] = { force, force_##chip1, \ |
| force_##chip2, NULL }; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #define I2C_CLIENT_INSMOD_3(chip1, chip2, chip3) \ |
| enum chips { any_chip, chip1, chip2, chip3 }; \ |
| I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ |
| "boldly assume to be present"); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ |
| static unsigned short *forces[] = { force, force_##chip1, \ |
| force_##chip2, force_##chip3, \ |
| NULL }; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #define I2C_CLIENT_INSMOD_4(chip1, chip2, chip3, chip4) \ |
| enum chips { any_chip, chip1, chip2, chip3, chip4 }; \ |
| I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ |
| "boldly assume to be present"); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ |
| static unsigned short *forces[] = { force, force_##chip1, \ |
| force_##chip2, force_##chip3, \ |
| force_##chip4, NULL}; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #define I2C_CLIENT_INSMOD_5(chip1, chip2, chip3, chip4, chip5) \ |
| enum chips { any_chip, chip1, chip2, chip3, chip4, chip5 }; \ |
| I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ |
| "boldly assume to be present"); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ |
| static unsigned short *forces[] = { force, force_##chip1, \ |
| force_##chip2, force_##chip3, \ |
| force_##chip4, force_##chip5, \ |
| NULL }; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #define I2C_CLIENT_INSMOD_6(chip1, chip2, chip3, chip4, chip5, chip6) \ |
| enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6 }; \ |
| I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ |
| "boldly assume to be present"); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ |
| static unsigned short *forces[] = { force, force_##chip1, \ |
| force_##chip2, force_##chip3, \ |
| force_##chip4, force_##chip5, \ |
| force_##chip6, NULL }; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #define I2C_CLIENT_INSMOD_7(chip1, chip2, chip3, chip4, chip5, chip6, chip7) \ |
| enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \ |
| chip7 }; \ |
| I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ |
| "boldly assume to be present"); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip7); \ |
| static unsigned short *forces[] = { force, force_##chip1, \ |
| force_##chip2, force_##chip3, \ |
| force_##chip4, force_##chip5, \ |
| force_##chip6, force_##chip7, \ |
| NULL }; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #define I2C_CLIENT_INSMOD_8(chip1, chip2, chip3, chip4, chip5, chip6, chip7, chip8) \ |
| enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \ |
| chip7, chip8 }; \ |
| I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ |
| "boldly assume to be present"); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip7); \ |
| I2C_CLIENT_MODULE_PARM_FORCE(chip8); \ |
| static unsigned short *forces[] = { force, force_##chip1, \ |
| force_##chip2, force_##chip3, \ |
| force_##chip4, force_##chip5, \ |
| force_##chip6, force_##chip7, \ |
| force_##chip8, NULL }; \ |
| I2C_CLIENT_INSMOD_COMMON |
| |
| #endif /* _LINUX_I2C_H */ |