// SPDX-License-Identifier: GPL-2.0-or-later /* * smsc47m1.c - Part of lm_sensors, Linux kernel modules * for hardware monitoring * * Supports the SMSC LPC47B27x, LPC47M10x, LPC47M112, LPC47M13x, * LPC47M14x, LPC47M15x, LPC47M192, LPC47M292 and LPC47M997 * Super-I/O chips. * * Copyright (C) 2002 Mark D. Studebaker <[email protected]> * Copyright (C) 2004-2007 Jean Delvare <[email protected]> * Ported to Linux 2.6 by Gabriele Gorla <[email protected]> * and Jean Delvare */ #define pr_fmt(fmt) … #include <linux/module.h> #include <linux/slab.h> #include <linux/ioport.h> #include <linux/jiffies.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #include <linux/init.h> #include <linux/mutex.h> #include <linux/sysfs.h> #include <linux/acpi.h> #include <linux/io.h> static unsigned short force_id; module_param(force_id, ushort, 0); MODULE_PARM_DESC(…) …; static struct platform_device *smsc47m1_pdev; #define DRVNAME … enum chips { … }; /* Super-I/0 registers and commands */ #define REG … #define VAL … static inline void superio_outb(int reg, int val) { … } static inline int superio_inb(int reg) { … } /* logical device for fans is 0x0A */ #define superio_select() … static inline int superio_enter(void) { … } static inline void superio_exit(void) { … } #define SUPERIO_REG_ACT … #define SUPERIO_REG_BASE … #define SUPERIO_REG_DEVID … #define SUPERIO_REG_DEVREV … /* Logical device registers */ #define SMSC_EXTENT … /* nr is 0 or 1 in the macros below */ #define SMSC47M1_REG_ALARM … #define SMSC47M1_REG_TPIN(nr) … #define SMSC47M1_REG_PPIN(nr) … #define SMSC47M1_REG_FANDIV … static const u8 SMSC47M1_REG_FAN[3] = …; static const u8 SMSC47M1_REG_FAN_PRELOAD[3] = …; static const u8 SMSC47M1_REG_PWM[3] = …; #define SMSC47M2_REG_ALARM6 … #define SMSC47M2_REG_TPIN1 … #define SMSC47M2_REG_TPIN2 … #define SMSC47M2_REG_TPIN3 … #define SMSC47M2_REG_PPIN3 … #define SMSC47M2_REG_FANDIV3 … #define MIN_FROM_REG(reg, div) … #define FAN_FROM_REG(reg, div, preload) … #define DIV_FROM_REG(reg) … #define PWM_FROM_REG(reg) … #define PWM_EN_FROM_REG(reg) … #define PWM_TO_REG(reg) … struct smsc47m1_data { … }; struct smsc47m1_sio_data { … }; static inline int smsc47m1_read_value(struct smsc47m1_data *data, u8 reg) { … } static inline void smsc47m1_write_value(struct smsc47m1_data *data, u8 reg, u8 value) { … } static struct smsc47m1_data *smsc47m1_update_device(struct device *dev, int init) { … } static ssize_t fan_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t fan_min_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t fan_div_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t fan_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t pwm_en_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t alarms_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t fan_min_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } /* * Note: we save and restore the fan minimum here, because its value is * determined in part by the fan clock divider. This follows the principle * of least surprise; the user doesn't expect the fan minimum to change just * because the divider changed. */ static ssize_t fan_div_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } static ssize_t pwm_en_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { … } static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); static SENSOR_DEVICE_ATTR_RO(fan1_alarm, fan_alarm, 0); static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0); static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_en, 0); static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); static SENSOR_DEVICE_ATTR_RO(fan2_alarm, fan_alarm, 1); static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1); static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_en, 1); static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 2); static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2); static SENSOR_DEVICE_ATTR_RW(fan3_div, fan_div, 2); static SENSOR_DEVICE_ATTR_RO(fan3_alarm, fan_alarm, 2); static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, 2); static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_en, 2); static DEVICE_ATTR_RO(alarms); static ssize_t name_show(struct device *dev, struct device_attribute *devattr, char *buf) { … } static DEVICE_ATTR_RO(name); static struct attribute *smsc47m1_attributes_fan1[] = …; static const struct attribute_group smsc47m1_group_fan1 = …; static struct attribute *smsc47m1_attributes_fan2[] = …; static const struct attribute_group smsc47m1_group_fan2 = …; static struct attribute *smsc47m1_attributes_fan3[] = …; static const struct attribute_group smsc47m1_group_fan3 = …; static struct attribute *smsc47m1_attributes_pwm1[] = …; static const struct attribute_group smsc47m1_group_pwm1 = …; static struct attribute *smsc47m1_attributes_pwm2[] = …; static const struct attribute_group smsc47m1_group_pwm2 = …; static struct attribute *smsc47m1_attributes_pwm3[] = …; static const struct attribute_group smsc47m1_group_pwm3 = …; static struct attribute *smsc47m1_attributes[] = …; static const struct attribute_group smsc47m1_group = …; static int __init smsc47m1_find(struct smsc47m1_sio_data *sio_data) { … } /* Restore device to its initial state */ static void smsc47m1_restore(const struct smsc47m1_sio_data *sio_data) { … } #define CHECK … #define REQUEST … /* * This function can be used to: * - test for resource conflicts with ACPI * - request the resources * We only allocate the I/O ports we really need, to minimize the risk of * conflicts with ACPI or with other drivers. */ static int __init smsc47m1_handle_resources(unsigned short address, enum chips type, int action, struct device *dev) { … } static void smsc47m1_remove_files(struct device *dev) { … } static int __init smsc47m1_probe(struct platform_device *pdev) { … } static void __exit smsc47m1_remove(struct platform_device *pdev) { … } /* * smsc47m1_remove() lives in .exit.text. For drivers registered via * module_platform_driver_probe() this ok because they cannot get unbound at * runtime. The driver needs to be marked with __refdata, otherwise modpost * triggers a section mismatch warning. */ static struct platform_driver smsc47m1_driver __refdata = …; static int __init smsc47m1_device_add(unsigned short address, const struct smsc47m1_sio_data *sio_data) { … } static int __init sm_smsc47m1_init(void) { … } static void __exit sm_smsc47m1_exit(void) { … } MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; module_init(…) …; module_exit(sm_smsc47m1_exit);
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