diff options
Diffstat (limited to 'drivers/hwmon/tmp103.c')
| -rw-r--r-- | drivers/hwmon/tmp103.c | 139 |
1 files changed, 82 insertions, 57 deletions
diff --git a/drivers/hwmon/tmp103.c b/drivers/hwmon/tmp103.c index 7f85b14544df..221bba8a215d 100644 --- a/drivers/hwmon/tmp103.c +++ b/drivers/hwmon/tmp103.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Texas Instruments TMP103 SMBus temperature sensor driver * Copyright (C) 2014 Heiko Schocher <hs@denx.de> @@ -6,17 +7,6 @@ * Texas Instruments TMP102 SMBus temperature sensor driver * * Copyright (C) 2010 Steven King <sfking@fdwdc.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #include <linux/module.h> @@ -24,11 +14,8 @@ #include <linux/slab.h> #include <linux/i2c.h> #include <linux/hwmon.h> -#include <linux/hwmon-sysfs.h> #include <linux/err.h> -#include <linux/mutex.h> #include <linux/device.h> -#include <linux/jiffies.h> #include <linux/regmap.h> #define TMP103_TEMP_REG 0x00 @@ -61,55 +48,92 @@ static inline u8 tmp103_mc_to_reg(int val) return DIV_ROUND_CLOSEST(val, 1000); } -static ssize_t tmp103_show_temp(struct device *dev, - struct device_attribute *attr, - char *buf) +static int tmp103_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *temp) { - struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); struct regmap *regmap = dev_get_drvdata(dev); unsigned int regval; - int ret; + int err, reg; + + switch (attr) { + case hwmon_temp_input: + reg = TMP103_TEMP_REG; + break; + case hwmon_temp_min: + reg = TMP103_TLOW_REG; + break; + case hwmon_temp_max: + reg = TMP103_THIGH_REG; + break; + default: + return -EOPNOTSUPP; + } - ret = regmap_read(regmap, sda->index, ®val); - if (ret < 0) - return ret; + err = regmap_read(regmap, reg, ®val); + if (err < 0) + return err; + + *temp = tmp103_reg_to_mc(regval); - return sprintf(buf, "%d\n", tmp103_reg_to_mc(regval)); + return 0; } -static ssize_t tmp103_set_temp(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static int tmp103_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long temp) { - struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); struct regmap *regmap = dev_get_drvdata(dev); - long val; - int ret; - - if (kstrtol(buf, 10, &val) < 0) - return -EINVAL; + int reg; + + switch (attr) { + case hwmon_temp_min: + reg = TMP103_TLOW_REG; + break; + case hwmon_temp_max: + reg = TMP103_THIGH_REG; + break; + default: + return -EOPNOTSUPP; + } - val = clamp_val(val, -55000, 127000); - ret = regmap_write(regmap, sda->index, tmp103_mc_to_reg(val)); - return ret ? ret : count; + temp = clamp_val(temp, -55000, 127000); + return regmap_write(regmap, reg, tmp103_mc_to_reg(temp)); } -static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, tmp103_show_temp, NULL , - TMP103_TEMP_REG); +static umode_t tmp103_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + if (type != hwmon_temp) + return 0; + + switch (attr) { + case hwmon_temp_input: + return 0444; + case hwmon_temp_min: + case hwmon_temp_max: + return 0644; + default: + return 0; + } +} -static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, tmp103_show_temp, - tmp103_set_temp, TMP103_TLOW_REG); +static const struct hwmon_channel_info * const tmp103_info[] = { + HWMON_CHANNEL_INFO(chip, + HWMON_C_REGISTER_TZ), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MIN), + NULL +}; -static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, tmp103_show_temp, - tmp103_set_temp, TMP103_THIGH_REG); +static const struct hwmon_ops tmp103_hwmon_ops = { + .is_visible = tmp103_is_visible, + .read = tmp103_read, + .write = tmp103_write, +}; -static struct attribute *tmp103_attrs[] = { - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp1_min.dev_attr.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, - NULL +static const struct hwmon_chip_info tmp103_chip_info = { + .ops = &tmp103_hwmon_ops, + .info = tmp103_info, }; -ATTRIBUTE_GROUPS(tmp103); static bool tmp103_regmap_is_volatile(struct device *dev, unsigned int reg) { @@ -123,8 +147,7 @@ static const struct regmap_config tmp103_regmap_config = { .volatile_reg = tmp103_regmap_is_volatile, }; -static int tmp103_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int tmp103_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct device *hwmon_dev; @@ -145,12 +168,14 @@ static int tmp103_probe(struct i2c_client *client, } i2c_set_clientdata(client, regmap); - hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, - regmap, tmp103_groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, + regmap, + &tmp103_chip_info, + NULL); return PTR_ERR_OR_ZERO(hwmon_dev); } -static int __maybe_unused tmp103_suspend(struct device *dev) +static int tmp103_suspend(struct device *dev) { struct regmap *regmap = dev_get_drvdata(dev); @@ -158,7 +183,7 @@ static int __maybe_unused tmp103_suspend(struct device *dev) TMP103_CONF_SD_MASK, 0); } -static int __maybe_unused tmp103_resume(struct device *dev) +static int tmp103_resume(struct device *dev) { struct regmap *regmap = dev_get_drvdata(dev); @@ -166,15 +191,15 @@ static int __maybe_unused tmp103_resume(struct device *dev) TMP103_CONF_SD_MASK, TMP103_CONF_SD); } -static SIMPLE_DEV_PM_OPS(tmp103_dev_pm_ops, tmp103_suspend, tmp103_resume); +static DEFINE_SIMPLE_DEV_PM_OPS(tmp103_dev_pm_ops, tmp103_suspend, tmp103_resume); static const struct i2c_device_id tmp103_id[] = { - { "tmp103", 0 }, + { "tmp103" }, { } }; MODULE_DEVICE_TABLE(i2c, tmp103_id); -static const struct of_device_id tmp103_of_match[] = { +static const struct of_device_id __maybe_unused tmp103_of_match[] = { { .compatible = "ti,tmp103" }, { }, }; @@ -184,7 +209,7 @@ static struct i2c_driver tmp103_driver = { .driver = { .name = "tmp103", .of_match_table = of_match_ptr(tmp103_of_match), - .pm = &tmp103_dev_pm_ops, + .pm = pm_sleep_ptr(&tmp103_dev_pm_ops), }, .probe = tmp103_probe, .id_table = tmp103_id, |