/* Very inefficient for ISA detects, and won't work for 10-bit addresses! */
int i2c_detect(struct i2c_adapter *adapter,
struct i2c_address_data *address_data,
i2c_found_addr_proc * found_proc)
{
int addr, i, found, j, err;
struct i2c_force_data *this_force;
int is_isa = i2c_is_isa_adapter(adapter);
int adapter_id =
is_isa ? SENSORS_ISA_BUS : i2c_adapter_id(adapter);
/* Forget it if we can't probe using SMBUS_QUICK */
if ((!is_isa)
&& !i2c_check_functionality(adapter,
I2C_FUNC_SMBUS_QUICK)) return -1;
for (addr = 0x00; addr <= (is_isa ? 0xffff : 0x7f); addr++) {
if ((is_isa && check_region(addr, 1)) ||
(!is_isa && 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;
!found
&& (this_force =
address_data->forces + i, this_force->force); i++) {
for (j = 0;
!found
&& (this_force->force[j] != SENSORS_I2C_END);
j += 2) {
if (
((adapter_id == this_force->force[j])
||
((this_force->
force[j] == SENSORS_ANY_I2C_BUS)
&& !is_isa))
&& (addr == this_force->force[j + 1])) {
#ifdef DEBUG
printk
("i2c-proc.o: found force parameter for adapter %d, addr %04x\n",
adapter_id, addr);
#endif
if (
(err =
found_proc(adapter, addr, 0,
this_force->
kind))) 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
&& (address_data->ignore[i] != SENSORS_I2C_END);
i += 2) {
if (
((adapter_id == address_data->ignore[i])
||
((address_data->
ignore[i] == SENSORS_ANY_I2C_BUS)
&& !is_isa))
&& (addr == address_data->ignore[i + 1])) {
#ifdef DEBUG
printk
("i2c-proc.o: found ignore parameter for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
found = 1;
}
}
for (i = 0;
!found
&& (address_data->ignore_range[i] != SENSORS_I2C_END);
i += 3) {
if (
((adapter_id == address_data->ignore_range[i])
||
((address_data->
ignore_range[i] ==
SENSORS_ANY_I2C_BUS) & !is_isa))
&& (addr >= address_data->ignore_range[i + 1])
&& (addr <= address_data->ignore_range[i + 2])) {
#ifdef DEBUG
printk
("i2c-proc.o: found ignore_range parameter for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
found = 1;
}
}
if (found)
continue;
/* Now, we will do a detection, but only if it is in the normal or
probe entries */
if (is_isa) {
for (i = 0;
!found
&& (address_data->normal_isa[i] !=
SENSORS_ISA_END); i += 1) {
if (addr == address_data->normal_isa[i]) {
#ifdef DEBUG
printk
("i2c-proc.o: found normal isa entry for adapter %d, "
"addr %04x\n", adapter_id,
addr);
#endif
found = 1;
}
}
for (i = 0;
!found
&& (address_data->normal_isa_range[i] !=
SENSORS_ISA_END); i += 3) {
if ((addr >=
address_data->normal_isa_range[i])
&& (addr <=
address_data->normal_isa_range[i + 1])
&&
((addr -
address_data->normal_isa_range[i]) %
address_data->normal_isa_range[i + 2] ==
0)) {
#ifdef DEBUG
printk
("i2c-proc.o: found normal isa_range entry for adapter %d, "
"addr %04x", adapter_id, addr);
#endif
found = 1;
}
}
} else {
for (i = 0;
!found && (address_data->normal_i2c[i] !=
SENSORS_I2C_END); i += 1) {
if (addr == address_data->normal_i2c[i]) {
found = 1;
#ifdef DEBUG
printk
("i2c-proc.o: found normal i2c entry for adapter %d, "
"addr %02x", adapter_id, addr);
#endif
}
}
for (i = 0;
!found
&& (address_data->normal_i2c_range[i] !=
SENSORS_I2C_END); i += 2) {
if ((addr >=
address_data->normal_i2c_range[i])
&& (addr <=
address_data->normal_i2c_range[i + 1]))
{
#ifdef DEBUG
printk
("i2c-proc.o: found normal i2c_range entry for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
found = 1;
}
}
}
for (i = 0;
!found && (address_data->probe[i] != SENSORS_I2C_END);
i += 2) {
if (((adapter_id == address_data->probe[i]) ||
((address_data->
probe[i] == SENSORS_ANY_I2C_BUS) & !is_isa))
&& (addr == address_data->probe[i + 1])) {
#ifdef DEBUG
printk
("i2c-proc.o: found probe parameter for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
found = 1;
}
}
for (i = 0; !found &&
(address_data->probe_range[i] != SENSORS_I2C_END);
i += 3) {
if (
((adapter_id == address_data->probe_range[i])
||
((address_data->probe_range[i] ==
SENSORS_ANY_I2C_BUS) & !is_isa))
&& (addr >= address_data->probe_range[i + 1])
&& (addr <= address_data->probe_range[i + 2])) {
found = 1;
#ifdef DEBUG
printk
("i2c-proc.o: found probe_range parameter for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
}
}
if (!found)
continue;
/* OK, so we really should examine this address. First check
whether there is some client here at all! */
if (is_isa ||
(i2c_smbus_xfer
(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) >= 0))
if ((err = found_proc(adapter, addr, 0, -1)))
return err;
}
return 0;
}
/* Very inefficient for ISA detects, and won't work for 10-bit addresses! */
int i2c_detect(struct i2c_adapter *adapter,
struct i2c_address_data *address_data,
int (*found_proc) (struct i2c_adapter *, int, int))
{
int addr, i, found, j, err;
struct i2c_force_data *this_force;
int is_isa = i2c_is_isa_adapter(adapter);
int adapter_id =
is_isa ? ANY_I2C_ISA_BUS : i2c_adapter_id(adapter);
unsigned short *normal_i2c;
unsigned int *normal_isa;
unsigned short *probe;
unsigned short *ignore;
/* Forget it if we can't probe using SMBUS_QUICK */
if ((!is_isa) &&
!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;
normal_isa = empty_isa;
if (address_data->normal_i2c)
normal_i2c = address_data->normal_i2c;
if (address_data->normal_isa)
normal_isa = address_data->normal_isa;
if (address_data->probe)
probe = address_data->probe;
if (address_data->ignore)
ignore = address_data->ignore;
for (addr = 0x00; addr <= (is_isa ? 0xffff : 0x7f); addr++) {
if (!is_isa && 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; !found && (this_force = address_data->forces + i, this_force->force); i++) {
for (j = 0; !found && (this_force->force[j] != I2C_CLIENT_END); j += 2) {
if ( ((adapter_id == this_force->force[j]) ||
((this_force->force[j] == ANY_I2C_BUS) && !is_isa)) &&
(addr == this_force->force[j + 1]) ) {
dev_dbg(&adapter->dev, "found force parameter for adapter %d, addr %04x\n", adapter_id, addr);
if ((err = found_proc(adapter, addr, this_force->kind)))
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) &&
!is_isa)) &&
(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 */
if (is_isa) {
for (i = 0; !found && (normal_isa[i] != I2C_CLIENT_ISA_END); i += 1) {
if (addr == normal_isa[i]) {
dev_dbg(&adapter->dev, "found normal isa entry for adapter %d, addr %04x\n", adapter_id, addr);
found = 1;
}
}
} else {
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) && !is_isa))
&& (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 (is_isa ||
(i2c_smbus_xfer (adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) >= 0))
if ((err = found_proc(adapter, addr, -1)))
return err;
}
return 0;
}
