From: Iker Perez del Palomar Sustatxa <iker.perez@xxxxxxxxxxxxxxx> Switch between the possible update_time values and write into the configuration register the selected value. Signed-off-by: Iker Perez del Palomar Sustatxa <iker.perez@xxxxxxxxxxxxxxx> --- drivers/hwmon/lm75.c | 43 ++++++++++++++++++++++++++++++++++--------- 1 file changed, 34 insertions(+), 9 deletions(-) diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c index 5ba7277dac69..9d48a85fd3e5 100644 --- a/drivers/hwmon/lm75.c +++ b/drivers/hwmon/lm75.c @@ -156,21 +156,46 @@ static int lm75_read(struct device *dev, enum hwmon_sensor_types type, } static int lm75_write(struct device *dev, enum hwmon_sensor_types type, - u32 attr, int channel, long temp) + u32 attr, int channel, long val) { struct lm75_data *data = dev_get_drvdata(dev); - u8 resolution; - int reg; + u8 resolution, set_mask, clr_mask; + int reg, status; + + // This are provisional changes, to be improved in case this approach works + set_mask = 0; + clr_mask = LM75_SHUTDOWN; switch (type) { case hwmon_chip: switch (attr) { case hwmon_chip_update_interval: - if (data->kind == tmp75b) - pr_info("Iker inside write\n"); + if (data->kind == tmp75b) { + clr_mask |= 1 << 15 | 0x3 << 13; + switch (val) { + case (27): + set_mask |= 0x3 << 13; + data->sample_time = MSEC_PER_SEC / 37; + break; + case (55): + set_mask |= 0x2 << 13; + data->sample_time = MSEC_PER_SEC / 18; + break; + case (111): + set_mask |= 0x1 << 13; + data->sample_time = MSEC_PER_SEC / 9; + break; + case (250): + set_mask |= 0x0 << 13; + data->sample_time = MSEC_PER_SEC / 4; + break; + default: + return -EINVAL; + status = configure_reg(set_mask, clr_mask, data, client); + } + } else return -EINVAL; - break; default: return -EINVAL; } @@ -195,11 +220,11 @@ static int lm75_write(struct device *dev, enum hwmon_sensor_types type, else resolution = data->resolution; - temp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX); - temp = DIV_ROUND_CLOSEST(temp << (resolution - 8), + val = clamp_val(val, LM75_TEMP_MIN, LM75_TEMP_MAX); + val = DIV_ROUND_CLOSEST(val << (resolution - 8), 1000) << (16 - resolution); - return regmap_write(data->regmap, reg, temp); + return regmap_write(data->regmap, reg, val); default: return -EINVAL; } -- 2.11.0