diff options
| author | Varun Wadekar <vwadekar@nvidia.com> | 2010-12-24 13:05:39 +0530 |
|---|---|---|
| committer | Bharat Nihalani <bnihalani@nvidia.com> | 2010-12-24 06:11:42 -0800 |
| commit | 9476a4955b1e4a9d39d5eec9492091f929fc0247 (patch) | |
| tree | ff5e702ae880eb5a3eb9e82d5307cb78795c892b /drivers/hwmon | |
| parent | 4fc3137c38291a36b40ca136db85fedd45c5e7b7 (diff) | |
hwmon: nct1008: set offset and config registers
the bootloader may keep the offset and config registers in a bad
state before the driver gets loaded. set offset and config registers
forceibly, depending on the platform data to avoid any temperature
measurement surprises later.
Bug 769337
Change-Id: Ia13d547c1dcade9eb95df28015fa04ce40b338b3
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/14226
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/nct1008.c | 26 |
1 files changed, 12 insertions, 14 deletions
diff --git a/drivers/hwmon/nct1008.c b/drivers/hwmon/nct1008.c index 72fa9b11642f..bc82da400035 100644 --- a/drivers/hwmon/nct1008.c +++ b/drivers/hwmon/nct1008.c @@ -36,12 +36,8 @@ #define NCT1008_MFR_ID_RD 0xFE #define NCT1008_CONFIG_WR 0x09 - #define NCT1008_CONFIG_ALERT_DISABLE 0x80 - #define NCT1008_CONFIG_RUN_STANDBY 0x40 - #define NCT1008_CONFIG_ALERT_THERM2 0x20 - #define NCT1008_CONFIG_ENABLE_EXTENDED 0x04 - #define NCT1008_CONV_RATE_WR 0x0A +#define NCT1008_OFFSET_WR 0x11 #define NCT1008_LOCAL_THERM_LIMIT_WR 0x20 #define DRIVER_NAME "nct1008" @@ -70,7 +66,7 @@ static ssize_t nct1008_show_temp(struct device *dev, } temp_value = (signed int)data; - return sprintf(buf, "%d", temp_value); + return sprintf(buf, "%d\n", temp_value); } static DEVICE_ATTR(temperature, S_IRUGO, nct1008_show_temp, NULL); @@ -127,21 +123,23 @@ static int __devinit nct1008_probe(struct i2c_client *client, goto fail_alloc; } - data = i2c_smbus_read_byte_data(client, NCT1008_CONFIG_RD); - if (data < 0) { - dev_err(&client->dev, "%s: failed to read config\n", __func__); - err = data; - goto fail_alloc; - } - /* set config params */ - data |= pdata->plat_data.config; + data = pdata->plat_data.config; err = i2c_smbus_write_byte_data(client, NCT1008_CONFIG_WR, data); if (err < 0) { dev_err(&client->dev, "%s: failed to set config\n", __func__); goto fail_alloc; } + /* set offset value */ + data = pdata->plat_data.offset; + err = i2c_smbus_write_byte_data(client, NCT1008_OFFSET_WR, data); + if (err < 0) { + dev_err(&client->dev, + "%s: failed to set offset\n", __func__); + goto fail_alloc; + } + /* set cpu shutdown threshold */ data = pdata->plat_data.thermal_threshold; err = i2c_smbus_write_byte_data(client, NCT1008_LOCAL_THERM_LIMIT_WR, data); |