diff options
Diffstat (limited to 'drivers/hwmon/lm90.c')
| -rw-r--r-- | drivers/hwmon/lm90.c | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index aafed2898d9..f628f2ae7e7 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -142,7 +142,11 @@ enum chips { lm90, adm1032, lm99, lm86, max6657, adt7461, max6680, max6646, /* * Device flags */ -#define LM90_FLAG_ADT7461_EXT 0x01 /* ADT7461 extended mode */ +#define LM90_FLAG_ADT7461_EXT (1 << 0) /* ADT7461 extended mode */ +/* Device features */ +#define LM90_HAVE_OFFSET (1 << 1) /* temperature offset register */ +#define LM90_HAVE_LOCAL_EXT (1 << 2) /* extended local temperature */ +#define LM90_HAVE_REM_LIMIT_EXT (1 << 3) /* extended remote limit */ /* * Functions declaration @@ -462,17 +466,16 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, mutex_lock(&data->update_lock); if (data->kind == adt7461) data->temp11[nr] = temp_to_u16_adt7461(data, val); - else if (data->kind == max6657 || data->kind == max6680) - data->temp11[nr] = temp_to_s8(val) << 8; else if (data->kind == max6646) data->temp11[nr] = temp_to_u8(val) << 8; - else + else if (data->flags & LM90_HAVE_REM_LIMIT_EXT) data->temp11[nr] = temp_to_s16(val); + else + data->temp11[nr] = temp_to_s8(val) << 8; i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], data->temp11[nr] >> 8); - if (data->kind != max6657 && data->kind != max6680 - && data->kind != max6646) + if (data->flags & LM90_HAVE_REM_LIMIT_EXT) i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], data->temp11[nr] & 0xff); mutex_unlock(&data->update_lock); @@ -847,6 +850,17 @@ static int lm90_probe(struct i2c_client *new_client, break; } + /* Set chip capabilities */ + if (data->kind != max6657 && data->kind != max6646) + data->flags |= LM90_HAVE_OFFSET; + + if (data->kind == max6657 || data->kind == max6646) + data->flags |= LM90_HAVE_LOCAL_EXT; + + if (data->kind != max6657 && data->kind != max6646 + && data->kind != max6680) + data->flags |= LM90_HAVE_REM_LIMIT_EXT; + /* Initialize the LM90 chip */ lm90_init_client(new_client); @@ -859,7 +873,7 @@ static int lm90_probe(struct i2c_client *new_client, if (err) goto exit_remove_files; } - if (data->kind != max6657 && data->kind != max6646) { + if (data->flags & LM90_HAVE_OFFSET) { err = device_create_file(&new_client->dev, &sensor_dev_attr_temp2_offset.dev_attr); if (err) @@ -925,7 +939,7 @@ static int lm90_remove(struct i2c_client *client) hwmon_device_unregister(data->hwmon_dev); sysfs_remove_group(&client->dev.kobj, &lm90_group); device_remove_file(&client->dev, &dev_attr_pec); - if (data->kind != max6657 && data->kind != max6646) + if (data->flags & LM90_HAVE_OFFSET) device_remove_file(&client->dev, &sensor_dev_attr_temp2_offset.dev_attr); @@ -1019,7 +1033,7 @@ static struct lm90_data *lm90_update_device(struct device *dev) lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[3]); lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst); - if (data->kind == max6657 || data->kind == max6646) { + if (data->flags & LM90_HAVE_LOCAL_EXT) { lm90_read16(client, LM90_REG_R_LOCAL_TEMP, MAX6657_REG_R_LOCAL_TEMPL, &data->temp11[4]); @@ -1033,22 +1047,20 @@ static struct lm90_data *lm90_update_device(struct device *dev) if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h) == 0) { data->temp11[1] = h << 8; - if (data->kind != max6657 && data->kind != max6680 - && data->kind != max6646 + if ((data->flags & LM90_HAVE_REM_LIMIT_EXT) && lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL, &l) == 0) data->temp11[1] |= l; } if (lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &h) == 0) { data->temp11[2] = h << 8; - if (data->kind != max6657 && data->kind != max6680 - && data->kind != max6646 + if ((data->flags & LM90_HAVE_REM_LIMIT_EXT) && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL, &l) == 0) data->temp11[2] |= l; } - if (data->kind != max6657 && data->kind != max6646) { + if (data->flags & LM90_HAVE_OFFSET) { if (lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSH, &h) == 0 && lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSL, |