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| author | Jean Delvare <khali@linux-fr.org> | 2008-10-17 15:51:09 (GMT) |
|---|---|---|
| committer | Jean Delvare <khali@mahadeva.delvare> | 2008-10-17 15:51:09 (GMT) |
| commit | 5f502a834a6471dc3cc456ccef66292e9e3a152e (patch) | |
| tree | e5302049c34bfc5c526d7d666929b04b0a4a2149 /drivers/hwmon | |
| parent | f65e17086fc141bee1592bbf6e709e9c7a43541b (diff) | |
| download | linux-fsl-qoriq-5f502a834a6471dc3cc456ccef66292e9e3a152e.tar.xz | |
hwmon: (lm90) Don't access nonexistent registers on Maxim chips
The Maxim chips supported by the lm90 driver have 8-bit high and low
remote limit values, not 11-bit as the other chips have. So stop reading
from and writing to registers that do not exist on these chips. Also
round the limit values set by the user properly.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Martyn Welch <martyn.welch@gefanuc.com>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/lm90.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index 16b99e0..90489b8 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -323,12 +323,16 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, mutex_lock(&data->update_lock); if (data->kind == adt7461) data->temp11[nr] = TEMP2_TO_REG_ADT7461(val); + else if (data->kind == max6657 || data->kind == max6680) + data->temp11[nr] = TEMP1_TO_REG(val) << 8; else data->temp11[nr] = TEMP2_TO_REG(val); + i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], data->temp11[nr] >> 8); - i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], - data->temp11[nr] & 0xff); + if (data->kind != max6657 && data->kind != max6680) + i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], + data->temp11[nr] & 0xff); mutex_unlock(&data->update_lock); return count; } @@ -801,12 +805,21 @@ static struct lm90_data *lm90_update_device(struct device *dev) lm90_read16(client, LM90_REG_R_REMOTE_TEMPH, LM90_REG_R_REMOTE_TEMPL, &data->temp11[0]); - if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h) == 0 - && lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL, &l) == 0) - data->temp11[1] = (h << 8) | l; - if (lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &h) == 0 - && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL, &l) == 0) - data->temp11[2] = (h << 8) | l; + if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h) == 0) { + data->temp11[1] = h << 8; + if (data->kind != max6657 && data->kind != max6680 + && 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 + && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL, + &l) == 0) + data->temp11[2] |= l; + } + if (data->kind != max6657) { if (lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSH, &h) == 0 |