On Wed, Aug 08, 2018 at 12:19:06AM +0900, Tokunori Ikegami wrote: > The function has the measure update part and limits and settings part. > And those parts can be split so split them for a maintainability. > Also not necessary to read the limits more than once so change to update once. > > Signed-off-by: Tokunori Ikegami <[email protected]> > Cc: Guenter Roeck <[email protected]> > Cc: Chris Packham <[email protected]> > Cc: [email protected] > --- > Changes since v1: > - Change to update the limits only once. > > drivers/hwmon/adt7475.c | 202 > +++++++++++++++++++++++++----------------------- > 1 file changed, 107 insertions(+), 95 deletions(-) > > diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c > index 9ef84998c7f3..42f48c6843c5 100644 > --- a/drivers/hwmon/adt7475.c > +++ b/drivers/hwmon/adt7475.c > @@ -194,7 +194,7 @@ struct adt7475_data { > struct mutex lock; > > unsigned long measure_updated; > - unsigned long limits_updated; > + bool limits_updated; > char valid; > > u8 config4; > @@ -1658,123 +1658,135 @@ static void adt7475_read_pwm(struct i2c_client > *client, int index) > } > } > > -static struct adt7475_data *adt7475_update_device(struct device *dev) > +static void adt7475_update_measure(struct device *dev) > { > struct i2c_client *client = to_i2c_client(dev); > struct adt7475_data *data = i2c_get_clientdata(client); > u16 ext; > int i; > > - mutex_lock(&data->lock); > + data->alarms = adt7475_read(REG_STATUS2) << 8; > + data->alarms |= adt7475_read(REG_STATUS1); > + > + ext = (adt7475_read(REG_EXTEND2) << 8) | > + adt7475_read(REG_EXTEND1); > + for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { > + if (!(data->has_voltage & (1 << i))) > + continue; > + data->voltage[INPUT][i] = > + (adt7475_read(VOLTAGE_REG(i)) << 2) | > + ((ext >> (i * 2)) & 3); > + } > > - /* Measurement values update every 2 seconds */ > - if (time_after(jiffies, data->measure_updated + HZ * 2) || > - !data->valid) { > - data->alarms = adt7475_read(REG_STATUS2) << 8; > - data->alarms |= adt7475_read(REG_STATUS1); > - > - ext = (adt7475_read(REG_EXTEND2) << 8) | > - adt7475_read(REG_EXTEND1); > - for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { > - if (!(data->has_voltage & (1 << i))) > - continue; > - data->voltage[INPUT][i] = > - (adt7475_read(VOLTAGE_REG(i)) << 2) | > - ((ext >> (i * 2)) & 3); > - } > + for (i = 0; i < ADT7475_TEMP_COUNT; i++) > + data->temp[INPUT][i] = > + (adt7475_read(TEMP_REG(i)) << 2) | > + ((ext >> ((i + 5) * 2)) & 3); > > - for (i = 0; i < ADT7475_TEMP_COUNT; i++) > - data->temp[INPUT][i] = > - (adt7475_read(TEMP_REG(i)) << 2) | > - ((ext >> ((i + 5) * 2)) & 3); > + if (data->has_voltage & (1 << 5)) { > + data->alarms |= adt7475_read(REG_STATUS4) << 24; > + ext = adt7475_read(REG_EXTEND3); > + data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 | > + ((ext >> 4) & 3); > + } > > - if (data->has_voltage & (1 << 5)) { > - data->alarms |= adt7475_read(REG_STATUS4) << 24; > - ext = adt7475_read(REG_EXTEND3); > - data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 | > - ((ext >> 4) & 3); > - } > + for (i = 0; i < ADT7475_TACH_COUNT; i++) { > + if (i == 3 && !data->has_fan4) > + continue; > + data->tach[INPUT][i] = > + adt7475_read_word(client, TACH_REG(i)); > + } > > - for (i = 0; i < ADT7475_TACH_COUNT; i++) { > - if (i == 3 && !data->has_fan4) > - continue; > - data->tach[INPUT][i] = > - adt7475_read_word(client, TACH_REG(i)); > - } > + /* Updated by hw when in auto mode */ > + for (i = 0; i < ADT7475_PWM_COUNT; i++) { > + if (i == 1 && !data->has_pwm2) > + continue; > + data->pwm[INPUT][i] = adt7475_read(PWM_REG(i)); > + } > > - /* Updated by hw when in auto mode */ > - for (i = 0; i < ADT7475_PWM_COUNT; i++) { > - if (i == 1 && !data->has_pwm2) > - continue; > - data->pwm[INPUT][i] = adt7475_read(PWM_REG(i)); > - } > + if (data->has_vid) > + data->vid = adt7475_read(REG_VID) & 0x3f; > +} > + > +static void adt7475_update_limits(struct device *dev) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + struct adt7475_data *data = i2c_get_clientdata(client); > + int i; > > - if (data->has_vid) > - data->vid = adt7475_read(REG_VID) & 0x3f; > + data->config4 = adt7475_read(REG_CONFIG4); > + data->config5 = adt7475_read(REG_CONFIG5); > > - data->measure_updated = jiffies; > + for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { > + if (!(data->has_voltage & (1 << i))) > + continue; > + /* Adjust values so they match the input precision */ > + data->voltage[MIN][i] = > + adt7475_read(VOLTAGE_MIN_REG(i)) << 2; > + data->voltage[MAX][i] = > + adt7475_read(VOLTAGE_MAX_REG(i)) << 2; > } > > - /* Limits and settings, should never change update every 60 seconds */ > - if (time_after(jiffies, data->limits_updated + HZ * 60) || > - !data->valid) { > - data->config4 = adt7475_read(REG_CONFIG4); > - data->config5 = adt7475_read(REG_CONFIG5); > - > - for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { > - if (!(data->has_voltage & (1 << i))) > - continue; > - /* Adjust values so they match the input precision */ > - data->voltage[MIN][i] = > - adt7475_read(VOLTAGE_MIN_REG(i)) << 2; > - data->voltage[MAX][i] = > - adt7475_read(VOLTAGE_MAX_REG(i)) << 2; > - } > + if (data->has_voltage & (1 << 5)) { > + data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2; > + data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2; > + } > > - if (data->has_voltage & (1 << 5)) { > - data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2; > - data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2; > - } > + for (i = 0; i < ADT7475_TEMP_COUNT; i++) { > + /* Adjust values so they match the input precision */ > + data->temp[MIN][i] = > + adt7475_read(TEMP_MIN_REG(i)) << 2; > + data->temp[MAX][i] = > + adt7475_read(TEMP_MAX_REG(i)) << 2; > + data->temp[AUTOMIN][i] = > + adt7475_read(TEMP_TMIN_REG(i)) << 2; > + data->temp[THERM][i] = > + adt7475_read(TEMP_THERM_REG(i)) << 2; > + data->temp[OFFSET][i] = > + adt7475_read(TEMP_OFFSET_REG(i)); > + } > + adt7475_read_hystersis(client); > > - for (i = 0; i < ADT7475_TEMP_COUNT; i++) { > - /* Adjust values so they match the input precision */ > - data->temp[MIN][i] = > - adt7475_read(TEMP_MIN_REG(i)) << 2; > - data->temp[MAX][i] = > - adt7475_read(TEMP_MAX_REG(i)) << 2; > - data->temp[AUTOMIN][i] = > - adt7475_read(TEMP_TMIN_REG(i)) << 2; > - data->temp[THERM][i] = > - adt7475_read(TEMP_THERM_REG(i)) << 2; > - data->temp[OFFSET][i] = > - adt7475_read(TEMP_OFFSET_REG(i)); > - } > - adt7475_read_hystersis(client); > + for (i = 0; i < ADT7475_TACH_COUNT; i++) { > + if (i == 3 && !data->has_fan4) > + continue; > + data->tach[MIN][i] = > + adt7475_read_word(client, TACH_MIN_REG(i)); > + } > > - for (i = 0; i < ADT7475_TACH_COUNT; i++) { > - if (i == 3 && !data->has_fan4) > - continue; > - data->tach[MIN][i] = > - adt7475_read_word(client, TACH_MIN_REG(i)); > - } > + for (i = 0; i < ADT7475_PWM_COUNT; i++) { > + if (i == 1 && !data->has_pwm2) > + continue; > + data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i)); > + data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i)); > + /* Set the channel and control information */ > + adt7475_read_pwm(client, i); > + } > > - for (i = 0; i < ADT7475_PWM_COUNT; i++) { > - if (i == 1 && !data->has_pwm2) > - continue; > - data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i)); > - data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i)); > - /* Set the channel and control information */ > - adt7475_read_pwm(client, i); > - } > + data->range[0] = adt7475_read(TEMP_TRANGE_REG(0)); > + data->range[1] = adt7475_read(TEMP_TRANGE_REG(1)); > + data->range[2] = adt7475_read(TEMP_TRANGE_REG(2)); > +} > + > +static struct adt7475_data *adt7475_update_device(struct device *dev) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + struct adt7475_data *data = i2c_get_clientdata(client); > > - data->range[0] = adt7475_read(TEMP_TRANGE_REG(0)); > - data->range[1] = adt7475_read(TEMP_TRANGE_REG(1)); > - data->range[2] = adt7475_read(TEMP_TRANGE_REG(2)); > + mutex_lock(&data->lock); > > - data->limits_updated = jiffies; > - data->valid = 1; > + /* Measurement values update every 2 seconds */ > + if (time_after(jiffies, data->measure_updated + HZ * 2) || > + !data->valid) { > + adt7475_update_measure(dev); > + data->measure_updated = jiffies; > } > > + /* Limits and settings, should never change update more than once */ > + if (!data->limits_updated) { > + adt7475_update_limits(dev); > + data->limits_updated = true; > + }
It should now be possible to do this from the probe function. Thanks, Guenter > mutex_unlock(&data->lock); > > return data; > -- > 2.16.1 > -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
