diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/i2c-sensor-detect.c | 45 |
1 files changed, 13 insertions, 32 deletions
diff --git a/drivers/i2c/i2c-sensor-detect.c b/drivers/i2c/i2c-sensor-detect.c index f99a8161a9f..5aede3ca9cb 100644 --- a/drivers/i2c/i2c-sensor-detect.c +++ b/drivers/i2c/i2c-sensor-detect.c @@ -25,42 +25,34 @@ #include <linux/i2c-sensor.h> static unsigned short empty[] = {I2C_CLIENT_END}; -static unsigned int empty_isa[] = {I2C_CLIENT_ISA_END}; -/* Very inefficient for ISA detects, and won't work for 10-bit addresses! */ +/* 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); + int adapter_id = 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)) + 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; - 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)) + 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 @@ -69,7 +61,7 @@ int i2c_detect(struct i2c_adapter *adapter, 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)) && + (this_force->force[j] == ANY_I2C_BUS)) && (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))) @@ -85,8 +77,7 @@ int i2c_detect(struct i2c_adapter *adapter, 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)) && + (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; @@ -97,19 +88,10 @@ int i2c_detect(struct i2c_adapter *adapter, /* 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 && (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); } } @@ -117,7 +99,7 @@ int i2c_detect(struct i2c_adapter *adapter, !found && (probe[i] != I2C_CLIENT_END); i += 2) { if (((adapter_id == probe[i]) || - ((probe[i] == ANY_I2C_BUS) && !is_isa)) + (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; @@ -128,8 +110,7 @@ int i2c_detect(struct i2c_adapter *adapter, /* 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 (i2c_smbus_xfer(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) >= 0) if ((err = found_proc(adapter, addr, -1))) return err; } |