diff options
Diffstat (limited to 'drivers/i2c/i2c-sensor-detect.c')
| -rw-r--r-- | drivers/i2c/i2c-sensor-detect.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/drivers/i2c/i2c-sensor-detect.c b/drivers/i2c/i2c-sensor-detect.c deleted file mode 100644 index 70fcf7281988..000000000000 --- a/drivers/i2c/i2c-sensor-detect.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - i2c-sensor-detect.c - Part of lm_sensors, Linux kernel modules for hardware - monitoring - Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl> and - Mark D. Studebaker <mdsxyz123@yahoo.com> - - 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. -*/ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/i2c.h> -#include <linux/i2c-sensor.h> - -static unsigned short empty[] = {I2C_CLIENT_END}; - -/* Won't work for 10-bit addresses! */ -int i2c_detect(struct i2c_adapter *adapter, - struct i2c_client_address_data *address_data, - int (*found_proc) (struct i2c_adapter *, int, int)) -{ - int addr, i, found, j, err; - int adapter_id = i2c_adapter_id(adapter); - unsigned short *normal_i2c; - unsigned short *probe; - unsigned short *ignore; - - /* Forget it if we can't probe using SMBUS_QUICK */ - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_QUICK)) - return -1; - - /* Use default "empty" list if the adapter doesn't specify any */ - normal_i2c = probe = ignore = empty; - if (address_data->normal_i2c) - normal_i2c = address_data->normal_i2c; - if (address_data->probe) - probe = address_data->probe; - if (address_data->ignore) - ignore = address_data->ignore; - - for (addr = 0x00; addr <= 0x7f; addr++) { - if (i2c_check_addr(adapter, addr)) - continue; - - /* If it is in one of the force entries, we don't do any - detection at all */ - found = 0; - for (i = 0; address_data->forces[i]; i++) { - for (j = 0; !found && (address_data->forces[i][j] != I2C_CLIENT_END); j += 2) { - if ( ((adapter_id == address_data->forces[i][j]) || - (address_data->forces[i][j] == ANY_I2C_BUS)) && - (addr == address_data->forces[i][j + 1]) ) { - dev_dbg(&adapter->dev, "found force parameter for adapter %d, addr %04x\n", adapter_id, addr); - if ((err = found_proc(adapter, addr, i))) - return err; - found = 1; - } - } - } - if (found) - continue; - - /* If this address is in one of the ignores, we can forget about it - right now */ - for (i = 0; !found && (ignore[i] != I2C_CLIENT_END); i += 2) { - if ( ((adapter_id == ignore[i]) || - (ignore[i] == ANY_I2C_BUS)) && - (addr == ignore[i + 1])) { - dev_dbg(&adapter->dev, "found ignore parameter for adapter %d, addr %04x\n", adapter_id, addr); - found = 1; - } - } - if (found) - continue; - - /* Now, we will do a detection, but only if it is in the normal or - probe entries */ - for (i = 0; !found && (normal_i2c[i] != I2C_CLIENT_END); i += 1) { - if (addr == normal_i2c[i]) { - found = 1; - dev_dbg(&adapter->dev, "found normal i2c entry for adapter %d, addr %02x\n", adapter_id, addr); - } - } - - for (i = 0; - !found && (probe[i] != I2C_CLIENT_END); - i += 2) { - if (((adapter_id == probe[i]) || - (probe[i] == ANY_I2C_BUS)) - && (addr == probe[i + 1])) { - dev_dbg(&adapter->dev, "found probe parameter for adapter %d, addr %04x\n", adapter_id, addr); - found = 1; - } - } - if (!found) - continue; - - /* OK, so we really should examine this address. First check - whether there is some client here at all! */ - if (i2c_smbus_xfer(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) >= 0) - if ((err = found_proc(adapter, addr, -1))) - return err; - } - return 0; -} - -EXPORT_SYMBOL(i2c_detect); - -MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " - "Rudolf Marek <r.marek@sh.cvut.cz>"); - -MODULE_DESCRIPTION("i2c-sensor driver"); -MODULE_LICENSE("GPL"); |