| /* |
| i2c-sensor.h - Part of the i2c package |
| was originally sensors.h - Part of lm_sensors, Linux kernel modules |
| for hardware monitoring |
| Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #ifndef _LINUX_I2C_SENSOR_H |
| #define _LINUX_I2C_SENSOR_H |
| |
| /* A structure containing detect information. |
| Force variables overrule all other variables; they force a detection on |
| that place. If a specific chip is given, the module blindly assumes this |
| chip type is present; if a general force (kind == 0) is given, the module |
| will still try to figure out what type of chip is present. This is useful |
| if for some reasons the detect for SMBus or ISA address space filled |
| fails. |
| probe: insmod parameter. Initialize this list with I2C_CLIENT_ISA_END values. |
| A list of pairs. The first value is a bus number (ANY_I2C_ISA_BUS for |
| the ISA bus, -1 for any I2C bus), the second is the address. |
| kind: The kind of chip. 0 equals any chip. |
| */ |
| struct i2c_force_data { |
| unsigned short *force; |
| unsigned short kind; |
| }; |
| |
| /* A structure containing the detect information. |
| normal_i2c: filled in by the module writer. Terminated by I2C_CLIENT_ISA_END. |
| A list of I2C addresses which should normally be examined. |
| normal_isa: filled in by the module writer. Terminated by SENSORS_ISA_END. |
| A list of ISA addresses which should normally be examined. |
| probe: insmod parameter. Initialize this list with I2C_CLIENT_ISA_END values. |
| A list of pairs. The first value is a bus number (ANY_I2C_ISA_BUS for |
| the ISA bus, -1 for any I2C bus), the second is the address. These |
| addresses are also probed, as if they were in the 'normal' list. |
| ignore: insmod parameter. Initialize this list with I2C_CLIENT_ISA_END values. |
| A list of pairs. The first value is a bus number (ANY_I2C_ISA_BUS for |
| the ISA bus, -1 for any I2C bus), the second is the I2C address. These |
| addresses are never probed. This parameter overrules 'normal' and |
| 'probe', but not the 'force' lists. |
| force_data: insmod parameters. A list, ending with an element of which |
| the force field is NULL. |
| */ |
| struct i2c_address_data { |
| unsigned short *normal_i2c; |
| unsigned int *normal_isa; |
| unsigned short *probe; |
| unsigned short *ignore; |
| struct i2c_force_data *forces; |
| }; |
| |
| #define SENSORS_MODULE_PARM_FORCE(name) \ |
| I2C_CLIENT_MODULE_PARM(force_ ## name, \ |
| "List of adapter,address pairs which are unquestionably" \ |
| " assumed to contain a `" # name "' chip") |
| |
| |
| /* This defines several insmod variables, and the addr_data structure */ |
| #define SENSORS_INSMOD \ |
| 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_address_data addr_data = { \ |
| .normal_i2c = normal_i2c, \ |
| .normal_isa = normal_isa, \ |
| .probe = probe, \ |
| .ignore = ignore, \ |
| .forces = forces, \ |
| } |
| |
| /* The following functions create an enum with the chip names as elements. |
| The first element of the enum is any_chip. These are the only macros |
| a module will want to use. */ |
| |
| #define SENSORS_INSMOD_0 \ |
| enum chips { any_chip }; \ |
| I2C_CLIENT_MODULE_PARM(force, \ |
| "List of adapter,address pairs to boldly assume " \ |
| "to be present"); \ |
| static struct i2c_force_data forces[] = {{force,any_chip},{NULL}}; \ |
| SENSORS_INSMOD |
| |
| #define SENSORS_INSMOD_1(chip1) \ |
| enum chips { any_chip, chip1 }; \ |
| I2C_CLIENT_MODULE_PARM(force, \ |
| "List of adapter,address pairs to boldly assume " \ |
| "to be present"); \ |
| SENSORS_MODULE_PARM_FORCE(chip1); \ |
| static struct i2c_force_data forces[] = {{force,any_chip},\ |
| {force_ ## chip1,chip1}, \ |
| {NULL}}; \ |
| SENSORS_INSMOD |
| |
| #define SENSORS_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"); \ |
| SENSORS_MODULE_PARM_FORCE(chip1); \ |
| SENSORS_MODULE_PARM_FORCE(chip2); \ |
| static struct i2c_force_data forces[] = {{force,any_chip}, \ |
| {force_ ## chip1,chip1}, \ |
| {force_ ## chip2,chip2}, \ |
| {NULL}}; \ |
| SENSORS_INSMOD |
| |
| #define SENSORS_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"); \ |
| SENSORS_MODULE_PARM_FORCE(chip1); \ |
| SENSORS_MODULE_PARM_FORCE(chip2); \ |
| SENSORS_MODULE_PARM_FORCE(chip3); \ |
| static struct i2c_force_data forces[] = {{force,any_chip}, \ |
| {force_ ## chip1,chip1}, \ |
| {force_ ## chip2,chip2}, \ |
| {force_ ## chip3,chip3}, \ |
| {NULL}}; \ |
| SENSORS_INSMOD |
| |
| #define SENSORS_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"); \ |
| SENSORS_MODULE_PARM_FORCE(chip1); \ |
| SENSORS_MODULE_PARM_FORCE(chip2); \ |
| SENSORS_MODULE_PARM_FORCE(chip3); \ |
| SENSORS_MODULE_PARM_FORCE(chip4); \ |
| static struct i2c_force_data forces[] = {{force,any_chip}, \ |
| {force_ ## chip1,chip1}, \ |
| {force_ ## chip2,chip2}, \ |
| {force_ ## chip3,chip3}, \ |
| {force_ ## chip4,chip4}, \ |
| {NULL}}; \ |
| SENSORS_INSMOD |
| |
| #define SENSORS_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"); \ |
| SENSORS_MODULE_PARM_FORCE(chip1); \ |
| SENSORS_MODULE_PARM_FORCE(chip2); \ |
| SENSORS_MODULE_PARM_FORCE(chip3); \ |
| SENSORS_MODULE_PARM_FORCE(chip4); \ |
| SENSORS_MODULE_PARM_FORCE(chip5); \ |
| static struct i2c_force_data forces[] = {{force,any_chip}, \ |
| {force_ ## chip1,chip1}, \ |
| {force_ ## chip2,chip2}, \ |
| {force_ ## chip3,chip3}, \ |
| {force_ ## chip4,chip4}, \ |
| {force_ ## chip5,chip5}, \ |
| {NULL}}; \ |
| SENSORS_INSMOD |
| |
| #define SENSORS_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"); \ |
| SENSORS_MODULE_PARM_FORCE(chip1); \ |
| SENSORS_MODULE_PARM_FORCE(chip2); \ |
| SENSORS_MODULE_PARM_FORCE(chip3); \ |
| SENSORS_MODULE_PARM_FORCE(chip4); \ |
| SENSORS_MODULE_PARM_FORCE(chip5); \ |
| SENSORS_MODULE_PARM_FORCE(chip6); \ |
| static struct i2c_force_data forces[] = {{force,any_chip}, \ |
| {force_ ## chip1,chip1}, \ |
| {force_ ## chip2,chip2}, \ |
| {force_ ## chip3,chip3}, \ |
| {force_ ## chip4,chip4}, \ |
| {force_ ## chip5,chip5}, \ |
| {force_ ## chip6,chip6}, \ |
| {NULL}}; \ |
| SENSORS_INSMOD |
| |
| #define SENSORS_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"); \ |
| SENSORS_MODULE_PARM_FORCE(chip1); \ |
| SENSORS_MODULE_PARM_FORCE(chip2); \ |
| SENSORS_MODULE_PARM_FORCE(chip3); \ |
| SENSORS_MODULE_PARM_FORCE(chip4); \ |
| SENSORS_MODULE_PARM_FORCE(chip5); \ |
| SENSORS_MODULE_PARM_FORCE(chip6); \ |
| SENSORS_MODULE_PARM_FORCE(chip7); \ |
| static struct i2c_force_data forces[] = {{force,any_chip}, \ |
| {force_ ## chip1,chip1}, \ |
| {force_ ## chip2,chip2}, \ |
| {force_ ## chip3,chip3}, \ |
| {force_ ## chip4,chip4}, \ |
| {force_ ## chip5,chip5}, \ |
| {force_ ## chip6,chip6}, \ |
| {force_ ## chip7,chip7}, \ |
| {NULL}}; \ |
| SENSORS_INSMOD |
| |
| #define SENSORS_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"); \ |
| SENSORS_MODULE_PARM_FORCE(chip1); \ |
| SENSORS_MODULE_PARM_FORCE(chip2); \ |
| SENSORS_MODULE_PARM_FORCE(chip3); \ |
| SENSORS_MODULE_PARM_FORCE(chip4); \ |
| SENSORS_MODULE_PARM_FORCE(chip5); \ |
| SENSORS_MODULE_PARM_FORCE(chip6); \ |
| SENSORS_MODULE_PARM_FORCE(chip7); \ |
| SENSORS_MODULE_PARM_FORCE(chip8); \ |
| static struct i2c_force_data forces[] = {{force,any_chip}, \ |
| {force_ ## chip1,chip1}, \ |
| {force_ ## chip2,chip2}, \ |
| {force_ ## chip3,chip3}, \ |
| {force_ ## chip4,chip4}, \ |
| {force_ ## chip5,chip5}, \ |
| {force_ ## chip6,chip6}, \ |
| {force_ ## chip7,chip7}, \ |
| {force_ ## chip8,chip8}, \ |
| {NULL}}; \ |
| SENSORS_INSMOD |
| |
| /* Detect function. It iterates over all possible addresses itself. For |
| SMBus addresses, it will only call found_proc if some client is connected |
| to the SMBus (unless a 'force' matched); for ISA detections, this is not |
| done. */ |
| extern int i2c_detect(struct i2c_adapter *adapter, |
| struct i2c_address_data *address_data, |
| int (*found_proc) (struct i2c_adapter *, int, int)); |
| |
| |
| /* This macro is used to scale user-input to sensible values in almost all |
| chip drivers. */ |
| static inline int SENSORS_LIMIT(long value, long low, long high) |
| { |
| if (value < low) |
| return low; |
| else if (value > high) |
| return high; |
| else |
| return value; |
| } |
| #endif /* def _LINUX_I2C_SENSOR_H */ |