+++ /dev/null
-/*
- 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");
projects / linux-2.6-omap-h63xx.git / commitdiff