// SPDX-License-Identifier: GPL-2.0-only /* * An I2C driver for the Intersil ISL 12022 * * Author: Roman Fietze <[email protected]> * * Based on the Philips PCF8563 RTC * by Alessandro Zummo <[email protected]>. */ #include <linux/bcd.h> #include <linux/bitfield.h> #include <linux/clk-provider.h> #include <linux/err.h> #include <linux/hwmon.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/rtc.h> #include <linux/slab.h> #include <asm/byteorder.h> /* ISL register offsets */ #define ISL12022_REG_SC … #define ISL12022_REG_MN … #define ISL12022_REG_HR … #define ISL12022_REG_DT … #define ISL12022_REG_MO … #define ISL12022_REG_YR … #define ISL12022_REG_DW … #define ISL12022_REG_SR … #define ISL12022_REG_INT … #define ISL12022_REG_PWR_VBAT … #define ISL12022_REG_BETA … #define ISL12022_REG_TEMP_L … /* ISL register bits */ #define ISL12022_HR_MIL … #define ISL12022_SR_LBAT85 … #define ISL12022_SR_LBAT75 … #define ISL12022_INT_WRTC … #define ISL12022_INT_FO_MASK … #define ISL12022_INT_FO_OFF … #define ISL12022_INT_FO_32K … #define ISL12022_REG_VB85_MASK … #define ISL12022_REG_VB75_MASK … #define ISL12022_BETA_TSE … static umode_t isl12022_hwmon_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } /* * A user-initiated temperature conversion is not started by this function, * so the temperature is updated once every ~60 seconds. */ static int isl12022_hwmon_read_temp(struct device *dev, long *mC) { … } static int isl12022_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static const struct hwmon_channel_info * const isl12022_hwmon_info[] = …; static const struct hwmon_ops isl12022_hwmon_ops = …; static const struct hwmon_chip_info isl12022_hwmon_chip_info = …; static void isl12022_hwmon_register(struct device *dev) { … } /* * In the routines that deal directly with the isl12022 hardware, we use * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch. */ static int isl12022_rtc_read_time(struct device *dev, struct rtc_time *tm) { … } static int isl12022_rtc_set_time(struct device *dev, struct rtc_time *tm) { … } static int isl12022_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { … } static const struct rtc_class_ops isl12022_rtc_ops = …; static const struct regmap_config regmap_config = …; static int isl12022_register_clock(struct device *dev) { … } static const u32 trip_levels[2][7] = …; static void isl12022_set_trip_levels(struct device *dev) { … } static int isl12022_probe(struct i2c_client *client) { … } static const struct of_device_id isl12022_dt_match[] = …; MODULE_DEVICE_TABLE(of, isl12022_dt_match); static const struct i2c_device_id isl12022_id[] = …; MODULE_DEVICE_TABLE(i2c, isl12022_id); static struct i2c_driver isl12022_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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