From 7cc7de93fad46623e2600f74988c715d568e5ad8 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 12 Feb 2019 09:55:16 -0800 Subject: [PATCH] hwmon: (ntc_thermistor) Convert to new hwmon API Use devm_hwmon_device_register_with_info() instead of devm_hwmon_device_register_with_groups() to register the hwmon device to simplify the code and make it easier to maintain. As part of this change, thermal device registration is moved into the hwmon core. Signed-off-by: Guenter Roeck --- drivers/hwmon/ntc_thermistor.c | 106 ++++++++++++++++++++------------- 1 file changed, 66 insertions(+), 40 deletions(-) diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c index 2823aff82c82..e4f9f7ce92fa 100644 --- a/drivers/hwmon/ntc_thermistor.c +++ b/drivers/hwmon/ntc_thermistor.c @@ -37,8 +37,6 @@ #include #include -#include -#include struct ntc_compensation { int temp_c; @@ -588,55 +586,87 @@ static int ntc_thermistor_get_ohm(struct ntc_data *data) return -EINVAL; } -static int ntc_read_temp(void *data, int *temp) +static int ntc_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) { + struct ntc_data *data = dev_get_drvdata(dev); int ohm; - ohm = ntc_thermistor_get_ohm(data); - if (ohm < 0) - return ohm; - - *temp = get_temp_mc(data, ohm); - - return 0; + switch (type) { + case hwmon_temp: + switch (attr) { + case hwmon_temp_input: + ohm = ntc_thermistor_get_ohm(data); + if (ohm < 0) + return ohm; + *val = get_temp_mc(data, ohm); + return 0; + case hwmon_temp_type: + *val = 4; + return 0; + default: + break; + } + break; + default: + break; + } + return -EINVAL; } -static ssize_t ntc_type_show(struct device *dev, - struct device_attribute *attr, char *buf) +static umode_t ntc_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) { - return sprintf(buf, "4\n"); + if (type == hwmon_temp) { + switch (attr) { + case hwmon_temp_input: + case hwmon_temp_type: + return 0444; + default: + break; + } + } + return 0; } -static ssize_t ntc_temp_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ntc_data *data = dev_get_drvdata(dev); - int ohm; +static const u32 ntc_chip_config[] = { + HWMON_C_REGISTER_TZ, + 0 +}; - ohm = ntc_thermistor_get_ohm(data); - if (ohm < 0) - return ohm; +static const struct hwmon_channel_info ntc_chip = { + .type = hwmon_chip, + .config = ntc_chip_config, +}; - return sprintf(buf, "%d\n", get_temp_mc(data, ohm)); -} +static const u32 ntc_temp_config[] = { + HWMON_T_INPUT, HWMON_T_TYPE, + 0 +}; -static SENSOR_DEVICE_ATTR_RO(temp1_type, ntc_type, 0); -static SENSOR_DEVICE_ATTR_RO(temp1_input, ntc_temp, 0); +static const struct hwmon_channel_info ntc_temp = { + .type = hwmon_temp, + .config = ntc_temp_config, +}; -static struct attribute *ntc_attrs[] = { - &sensor_dev_attr_temp1_type.dev_attr.attr, - &sensor_dev_attr_temp1_input.dev_attr.attr, - NULL, +static const struct hwmon_channel_info *ntc_info[] = { + &ntc_chip, + &ntc_temp, + NULL }; -ATTRIBUTE_GROUPS(ntc); -static const struct thermal_zone_of_device_ops ntc_of_thermal_ops = { - .get_temp = ntc_read_temp, +static const struct hwmon_ops ntc_hwmon_ops = { + .is_visible = ntc_is_visible, + .read = ntc_read, +}; + +static const struct hwmon_chip_info ntc_chip_info = { + .ops = &ntc_hwmon_ops, + .info = ntc_info, }; static int ntc_thermistor_probe(struct platform_device *pdev) { - struct thermal_zone_device *tz; struct device *dev = &pdev->dev; const struct of_device_id *of_id = of_match_device(of_match_ptr(ntc_match), dev); @@ -697,8 +727,9 @@ static int ntc_thermistor_probe(struct platform_device *pdev) data->comp = ntc_type[pdev_id->driver_data].comp; data->n_comp = ntc_type[pdev_id->driver_data].n_comp; - hwmon_dev = devm_hwmon_device_register_with_groups(dev, pdev_id->name, - data, ntc_groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, pdev_id->name, + data, &ntc_chip_info, + NULL); if (IS_ERR(hwmon_dev)) { dev_err(dev, "unable to register as hwmon device.\n"); return PTR_ERR(hwmon_dev); @@ -707,11 +738,6 @@ static int ntc_thermistor_probe(struct platform_device *pdev) dev_info(dev, "Thermistor type: %s successfully probed.\n", pdev_id->name); - tz = devm_thermal_zone_of_sensor_register(dev, 0, data, - &ntc_of_thermal_ops); - if (IS_ERR(tz)) - dev_dbg(dev, "Failed to register to thermal fw.\n"); - return 0; } -- 2.30.2