X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fi2c.h;h=02fc617782ef7b5f5046cc9b6ac7df88536e24b9;hb=82ba011b9041dd31c15e4f63797b08aa0a288e61;hp=a24e267fd189b7aebc06f001cf5d5c66f9e66e98;hpb=d64f73be1b59b9556de0a8fbd4f1a003c6a45a5c;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/linux/i2c.h b/include/linux/i2c.h index a24e267..02fc617 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -45,90 +45,106 @@ struct i2c_adapter; struct i2c_client; struct i2c_driver; union i2c_smbus_data; +struct i2c_board_info; +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) /* * 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); +extern int i2c_master_send(struct i2c_client *client, const char *buf, + int count); +extern int i2c_master_recv(struct i2c_client *client, char *buf, int count); /* Transfer num messages. */ -extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num); - +extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, + int num); /* 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); +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); + conventions of i2c_smbus_xfer. */ + +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 read bytes */ extern s32 i2c_smbus_read_block_data(struct i2c_client *client, u8 command, u8 *values); -extern s32 i2c_smbus_write_block_data(struct i2c_client * client, - u8 command, u8 length, - const u8 *values); +extern s32 i2c_smbus_write_block_data(struct i2c_client *client, + u8 command, u8 length, const u8 *values); /* Returns the number of read bytes */ -extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, - u8 command, u8 *values); -extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client, +extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, + u8 command, u8 length, u8 *values); +extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client, u8 command, u8 length, const u8 *values); +#endif /* I2C */ -/* - * 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 - represent an I2C device driver + * @class: What kind of i2c device we instantiate (for detect) + * @attach_adapter: Callback for bus addition (for legacy drivers) + * @detach_adapter: Callback for bus removal (for legacy drivers) + * @probe: Callback for device binding + * @remove: Callback for device unbinding + * @shutdown: Callback for device shutdown + * @suspend: Callback for device suspend + * @resume: Callback for device resume + * @command: Callback for bus-wide signaling (optional) + * @driver: Device driver model driver + * @id_table: List of I2C devices supported by this driver + * @detect: Callback for device detection + * @address_list: The I2C addresses to probe (for detect) + * @clients: List of detected clients we created (for i2c-core use only) * * The driver.owner field should be set to the module owner of this driver. * The driver.name field should be set to the name of this driver. + * + * For automatic device detection, both @detect and @address_data must + * be defined. @class should also be set, otherwise only devices forced + * with module parameters will be created. The detect function must + * fill at least the name field of the i2c_board_info structure it is + * handed upon successful detection, and possibly also the flags field. + * + * If @detect is missing, the driver will still work fine for enumerated + * devices. Detected devices simply won't be supported. This is expected + * for the many I2C/SMBus devices which can't be detected reliably, and + * the ones which can always be enumerated in practice. + * + * The i2c_client structure which is handed to the @detect callback is + * not a real i2c_client. It is initialized just enough so that you can + * call i2c_smbus_read_byte_data and friends on it. Don't do anything + * else with it. In particular, calling dev_dbg and friends on it is + * not allowed. */ - struct i2c_driver { - int id; unsigned int class; - /* 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. (LEGACY I2C DRIVERS ONLY) + /* Notifies the driver that a new bus has appeared or is about to be + * removed. You should avoid using this if you can, it will probably + * be removed in a near future. */ 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. (LEGACY I2C DRIVERS ONLY) - */ - int (*detach_client)(struct i2c_client *); - - /* Standard driver model interfaces, for "new style" i2c drivers. - * With the driver model, device enumeration is NEVER done by drivers; - * it's done by infrastructure. (NEW STYLE DRIVERS ONLY) - */ - int (*probe)(struct i2c_client *); + /* Standard driver model interfaces */ + int (*probe)(struct i2c_client *, const struct i2c_device_id *); int (*remove)(struct i2c_client *); /* driver model interfaces that don't relate to enumeration */ @@ -139,15 +155,18 @@ struct i2c_driver { /* 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); + int (*command)(struct i2c_client *client, unsigned int cmd, void *arg); struct device_driver driver; - struct list_head list; + const struct i2c_device_id *id_table; + + /* Device detection callback for automatic device creation */ + int (*detect)(struct i2c_client *, struct i2c_board_info *); + const unsigned short *address_list; + struct list_head clients; }; #define to_i2c_driver(d) container_of(d, struct i2c_driver, driver) -#define I2C_NAME_SIZE 20 - /** * struct i2c_client - represent an I2C slave device * @flags: I2C_CLIENT_TEN indicates the device uses a ten bit chip address; @@ -156,10 +175,11 @@ struct i2c_driver { * @name: Indicates the type of the device, usually a chip name that's * generic enough to hide second-sourcing and compatible revisions. * @adapter: manages the bus segment hosting this I2C device + * @driver: device's driver, hence pointer to access routines * @dev: Driver model device node for the slave. * @irq: indicates the IRQ generated by this device (if any) - * @driver_name: Identifies new-style driver used with this device; also - * used as the module name for hotplug/coldplug modprobe support. + * @detected: member of an i2c_driver.clients list or i2c-core's + * userspace_devices list * * An i2c_client identifies a single device (i.e. chip) connected to an * i2c bus. The behaviour exposed to Linux is defined by the driver @@ -173,38 +193,37 @@ struct i2c_client { char name[I2C_NAME_SIZE]; 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 */ - int irq; /* irq issued by device (or -1) */ - char driver_name[KOBJ_NAME_LEN]; - struct list_head list; - struct completion released; + int irq; /* irq issued by device */ + struct list_head detected; }; #define to_i2c_client(d) container_of(d, struct i2c_client, dev) +extern struct i2c_client *i2c_verify_client(struct device *dev); + static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj) { - return to_i2c_client(container_of(kobj, struct device, kobj)); + struct device * const dev = container_of(kobj, struct device, kobj); + return to_i2c_client(dev); } -static inline void *i2c_get_clientdata (struct i2c_client *dev) +static inline void *i2c_get_clientdata(const struct i2c_client *dev) { - return dev_get_drvdata (&dev->dev); + return dev_get_drvdata(&dev->dev); } -static inline void i2c_set_clientdata (struct i2c_client *dev, void *data) +static inline void i2c_set_clientdata(struct i2c_client *dev, void *data) { - dev_set_drvdata (&dev->dev, data); + dev_set_drvdata(&dev->dev, data); } /** * struct i2c_board_info - template for device creation - * @driver_name: identifies the driver to be bound to the device - * @type: optional chip type information, to initialize i2c_client.name + * @type: chip type, to initialize i2c_client.name * @flags: to initialize i2c_client.flags * @addr: stored in i2c_client.addr * @platform_data: stored in i2c_client.dev.platform_data + * @archdata: copied into i2c_client.dev.archdata * @irq: stored in i2c_client.irq * * I2C doesn't actually support hardware probing, although controllers and @@ -213,35 +232,35 @@ static inline void i2c_set_clientdata (struct i2c_client *dev, void *data) * that, such as chip type, configuration, associated IRQ, and so on. * * i2c_board_info is used to build tables of information listing I2C devices - * that are present. This information is used to grow the driver model tree - * for "new style" I2C drivers. For mainboards this is done statically using - * i2c_register_board_info(); bus numbers identify adapters that aren't - * yet available. For add-on boards, i2c_new_device() does this dynamically - * with the adapter already known. + * that are present. This information is used to grow the driver model tree. + * For mainboards this is done statically using i2c_register_board_info(); + * bus numbers identify adapters that aren't yet available. For add-on boards, + * i2c_new_device() does this dynamically with the adapter already known. */ struct i2c_board_info { - char driver_name[KOBJ_NAME_LEN]; char type[I2C_NAME_SIZE]; unsigned short flags; unsigned short addr; void *platform_data; + struct dev_archdata *archdata; int irq; }; /** - * I2C_BOARD_INFO - macro used to list an i2c device and its driver - * @driver: identifies the driver to use with the device + * I2C_BOARD_INFO - macro used to list an i2c device and its address + * @dev_type: identifies the device type * @dev_addr: the device's address on the bus. * * This macro initializes essential fields of a struct i2c_board_info, * declaring what has been provided on a particular board. Optional - * fields (such as the chip type, its associated irq, or device-specific - * platform_data) are provided using conventional syntax. + * fields (such as associated irq, or device-specific platform_data) + * are provided using conventional syntax. */ -#define I2C_BOARD_INFO(driver,dev_addr) \ - .driver_name = (driver), .addr = (dev_addr) +#define I2C_BOARD_INFO(dev_type, dev_addr) \ + .type = dev_type, .addr = (dev_addr) +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) /* Add-on boards should register/unregister their devices; e.g. a board * with integrated I2C, a config eeprom, sensors, and a codec that's * used in conjunction with the primary hardware. @@ -258,15 +277,31 @@ i2c_new_probed_device(struct i2c_adapter *adap, struct i2c_board_info *info, unsigned short const *addr_list); +/* For devices that use several addresses, use i2c_new_dummy() to make + * client handles for the extra addresses. + */ +extern struct i2c_client * +i2c_new_dummy(struct i2c_adapter *adap, u16 address); + extern void i2c_unregister_device(struct i2c_client *); +#endif /* I2C */ /* Mainboard arch_initcall() code should register all its I2C devices. * This is done at arch_initcall time, before declaring any i2c adapters. * Modules for add-on boards must use other calls. */ +#ifdef CONFIG_I2C_BOARDINFO extern int -i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsigned n); - +i2c_register_board_info(int busnum, struct i2c_board_info const *info, + unsigned n); +#else +static inline int +i2c_register_board_info(int busnum, struct i2c_board_info const *info, + unsigned n) +{ + return 0; +} +#endif /* I2C_BOARDINFO */ /* * The following structs are for those who like to implement new bus drivers: @@ -281,14 +316,11 @@ struct i2c_algorithm { using common I2C messages */ /* master_xfer should return the number of messages successfully processed, or a negative value on error */ - int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs, - int num); + 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); - - /* --- ioctl like call to set div. parameters. */ - int (*algo_control)(struct i2c_adapter *, unsigned int, unsigned long); + unsigned short flags, char read_write, + u8 command, int size, union i2c_smbus_data *data); /* To determine what the adapter supports */ u32 (*functionality) (struct i2c_adapter *); @@ -301,79 +333,80 @@ struct i2c_algorithm { struct i2c_adapter { struct module *owner; unsigned int id; - unsigned int class; + unsigned int class; /* classes to allow probing for */ const 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 */ - u8 level; /* nesting level for lockdep */ - struct mutex bus_lock; - struct mutex clist_lock; + struct rt_mutex bus_lock; - int timeout; + int timeout; /* in jiffies */ int retries; struct device dev; /* the adapter device */ int nr; - struct list_head clients; - struct list_head list; char name[48]; struct completion dev_released; }; #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) -static inline void *i2c_get_adapdata (struct i2c_adapter *dev) +static inline void *i2c_get_adapdata(const struct i2c_adapter *dev) { - return dev_get_drvdata (&dev->dev); + return dev_get_drvdata(&dev->dev); } -static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data) +static inline void i2c_set_adapdata(struct i2c_adapter *dev, void *data) { - dev_set_drvdata (&dev->dev, data); + dev_set_drvdata(&dev->dev, data); +} + +/** + * i2c_lock_adapter - Prevent access to an I2C bus segment + * @adapter: Target I2C bus segment + */ +static inline void i2c_lock_adapter(struct i2c_adapter *adapter) +{ + rt_mutex_lock(&adapter->bus_lock); +} + +/** + * i2c_unlock_adapter - Reauthorize access to an I2C bus segment + * @adapter: Target I2C bus segment + */ +static inline void i2c_unlock_adapter(struct i2c_adapter *adapter) +{ + rt_mutex_unlock(&adapter->bus_lock); } /*flags for the client struct: */ -#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 */ +#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 */ +#define I2C_CLIENT_WAKE 0x80 /* for board_info; true iff can wake */ /* 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; -}; +#define I2C_CLASS_DDC (1<<3) /* DDC bus on graphics adapters */ +#define I2C_CLASS_SPD (1<<7) /* SPD EEPROMs and similar */ /* 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 + +/* Construct an I2C_CLIENT_END-terminated array of i2c addresses */ +#define I2C_ADDRS(addr, addrs...) \ + ((const unsigned short []){ addr, ## addrs, I2C_CLIENT_END }) /* ----- functions exported by i2c.o */ /* administration... */ +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) extern int i2c_add_adapter(struct i2c_adapter *); extern int i2c_del_adapter(struct i2c_adapter *); extern int i2c_add_numbered_adapter(struct i2c_adapter *); @@ -386,38 +419,15 @@ static inline int i2c_add_driver(struct i2c_driver *driver) return i2c_register_driver(THIS_MODULE, driver); } -extern int i2c_attach_client(struct i2c_client *); -extern int i2c_detach_client(struct i2c_client *); - -/* Should be used to make sure that client-struct is valid and that it - is okay to access the i2c-client. - returns -ENODEV if client has gone in the meantime */ -extern int i2c_use_client(struct i2c_client *); -extern int i2c_release_client(struct i2c_client *); +extern struct i2c_client *i2c_use_client(struct i2c_client *client); +extern void i2c_release_client(struct i2c_client *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 struct i2c_adapter *i2c_get_adapter(int id); extern void i2c_put_adapter(struct i2c_adapter *adap); @@ -433,26 +443,60 @@ 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 */ +/* Return the adapter number for a specific adapter */ static inline int i2c_adapter_id(struct i2c_adapter *adap) { return adap->nr; } +#endif /* I2C */ #endif /* __KERNEL__ */ -/* - * I2C Message - used for pure i2c transaction, also from /dev interface +/** + * 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 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 -#define I2C_M_RECV_LEN 0x0400 /* length will be first received byte */ +#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_NOSTART 0x4000 /* if I2C_FUNC_PROTOCOL_MANGLING */ +#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 */ }; @@ -461,8 +505,8 @@ struct i2c_msg { #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_PROTOCOL_MANGLING 0x00000004 /* I2C_M_NOSTART etc. */ +#define I2C_FUNC_SMBUS_PEC 0x00000008 #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_QUICK 0x00010000 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 @@ -476,29 +520,26 @@ struct i2c_msg { #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_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_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) + +#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 @@ -508,10 +549,10 @@ 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 */ + /* and one more for user-space compatibility */ }; -/* smbus_access read or write markers */ +/* i2c_smbus_xfer read or write markers */ #define I2C_SMBUS_READ 1 #define I2C_SMBUS_WRITE 0 @@ -523,215 +564,8 @@ union i2c_smbus_data { #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_I2C_BLOCK_BROKEN 6 #define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ +#define I2C_SMBUS_I2C_BLOCK_DATA 8 - -/* ----- 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 */ - -/* ----- I2C-DEV: char device interface stuff ------------------------- */ -#ifdef __KERNEL__ - -#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 /* __KERNEL__ */ #endif /* _LINUX_I2C_H */