// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2008, 2010 Davide Rizzo <[email protected]> * * The LM95241 is a sensor chip made by National Semiconductors. * It reports up to three temperatures (its own plus up to two external ones). * Complete datasheet can be obtained from National's website at: * http://www.national.com/ds.cgi/LM/LM95241.pdf */ #include <linux/bitops.h> #include <linux/err.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/jiffies.h> #include <linux/hwmon.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/slab.h> #define DEVNAME … static const unsigned short normal_i2c[] = …; /* LM95241 registers */ #define LM95241_REG_R_MAN_ID … #define LM95241_REG_R_CHIP_ID … #define LM95241_REG_R_STATUS … #define LM95241_REG_RW_CONFIG … #define LM95241_REG_RW_REM_FILTER … #define LM95241_REG_RW_TRUTHERM … #define LM95241_REG_W_ONE_SHOT … #define LM95241_REG_R_LOCAL_TEMPH … #define LM95241_REG_R_REMOTE1_TEMPH … #define LM95241_REG_R_REMOTE2_TEMPH … #define LM95241_REG_R_LOCAL_TEMPL … #define LM95241_REG_R_REMOTE1_TEMPL … #define LM95241_REG_R_REMOTE2_TEMPL … #define LM95241_REG_RW_REMOTE_MODEL … /* LM95241 specific bitfields */ #define CFG_STOP … #define CFG_CR0076 … #define CFG_CR0182 … #define CFG_CR1000 … #define CFG_CR2700 … #define CFG_CRMASK … #define R1MS_MASK … #define R2MS_MASK … #define R1DF_MASK … #define R2DF_MASK … #define R1FE_MASK … #define R2FE_MASK … #define R1DM … #define R2DM … #define TT1_SHIFT … #define TT2_SHIFT … #define TT_OFF … #define TT_ON … #define TT_MASK … #define NATSEMI_MAN_ID … #define LM95231_CHIP_ID … #define LM95241_CHIP_ID … static const u8 lm95241_reg_address[] = …; /* Client data (each client gets its own) */ struct lm95241_data { … }; /* Conversions */ static int temp_from_reg_signed(u8 val_h, u8 val_l) { … } static int temp_from_reg_unsigned(u8 val_h, u8 val_l) { … } static struct lm95241_data *lm95241_update_device(struct device *dev) { … } static int lm95241_read_chip(struct device *dev, u32 attr, int channel, long *val) { … } static int lm95241_read_temp(struct device *dev, u32 attr, int channel, long *val) { … } static int lm95241_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static int lm95241_write_chip(struct device *dev, u32 attr, int channel, long val) { … } static int lm95241_write_temp(struct device *dev, u32 attr, int channel, long val) { … } static int lm95241_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long val) { … } static umode_t lm95241_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } /* Return 0 if detection is successful, -ENODEV otherwise */ static int lm95241_detect(struct i2c_client *new_client, struct i2c_board_info *info) { … } static void lm95241_init_client(struct i2c_client *client, struct lm95241_data *data) { … } static const struct hwmon_channel_info * const lm95241_info[] = …; static const struct hwmon_ops lm95241_hwmon_ops = …; static const struct hwmon_chip_info lm95241_chip_info = …; static int lm95241_probe(struct i2c_client *client) { … } /* Driver data (common to all clients) */ static const struct i2c_device_id lm95241_id[] = …; MODULE_DEVICE_TABLE(i2c, lm95241_id); static struct i2c_driver lm95241_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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