// SPDX-License-Identifier: GPL-2.0-or-later /* * abituguru3.c * * Copyright (c) 2006-2008 Hans de Goede <[email protected]> * Copyright (c) 2008 Alistair John Strachan <[email protected]> */ /* * This driver supports the sensor part of revision 3 of the custom Abit uGuru * chip found on newer Abit uGuru motherboards. Note: because of lack of specs * only reading the sensors and their settings is supported. */ #define pr_fmt(fmt) … #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/mutex.h> #include <linux/err.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/dmi.h> #include <linux/io.h> /* uGuru3 bank addresses */ #define ABIT_UGURU3_SETTINGS_BANK … #define ABIT_UGURU3_SENSORS_BANK … #define ABIT_UGURU3_MISC_BANK … #define ABIT_UGURU3_ALARMS_START … #define ABIT_UGURU3_SETTINGS_START … #define ABIT_UGURU3_VALUES_START … #define ABIT_UGURU3_BOARD_ID … /* uGuru3 sensor bank flags */ /* Alarm if: */ #define ABIT_UGURU3_TEMP_HIGH_ALARM_ENABLE … #define ABIT_UGURU3_VOLT_HIGH_ALARM_ENABLE … #define ABIT_UGURU3_VOLT_LOW_ALARM_ENABLE … #define ABIT_UGURU3_TEMP_HIGH_ALARM_FLAG … #define ABIT_UGURU3_VOLT_HIGH_ALARM_FLAG … #define ABIT_UGURU3_VOLT_LOW_ALARM_FLAG … #define ABIT_UGURU3_FAN_LOW_ALARM_ENABLE … #define ABIT_UGURU3_BEEP_ENABLE … #define ABIT_UGURU3_SHUTDOWN_ENABLE … /* sensor types */ #define ABIT_UGURU3_IN_SENSOR … #define ABIT_UGURU3_TEMP_SENSOR … #define ABIT_UGURU3_FAN_SENSOR … /* * Timeouts / Retries, if these turn out to need a lot of fiddling we could * convert them to params. Determined by trial and error. I assume this is * cpu-speed independent, since the ISA-bus and not the CPU should be the * bottleneck. */ #define ABIT_UGURU3_WAIT_TIMEOUT … /* * Normally the 0xAC at the end of synchronize() is reported after the * first read, but sometimes not and we need to poll */ #define ABIT_UGURU3_SYNCHRONIZE_TIMEOUT … /* utility macros */ #define ABIT_UGURU3_NAME … #define ABIT_UGURU3_DEBUG(format, arg...) … /* Macros to help calculate the sysfs_names array length */ #define ABIT_UGURU3_MAX_NO_SENSORS … /* * sum of strlen +1 of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0, * in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0, in??_label\0 */ #define ABIT_UGURU3_IN_NAMES_LENGTH … /* * sum of strlen +1 of: temp??_input\0, temp??_max\0, temp??_crit\0, * temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0, * temp??_label\0 */ #define ABIT_UGURU3_TEMP_NAMES_LENGTH … /* * sum of strlen +1 of: fan??_input\0, fan??_min\0, fan??_alarm\0, * fan??_alarm_enable\0, fan??_beep\0, fan??_shutdown\0, fan??_label\0 */ #define ABIT_UGURU3_FAN_NAMES_LENGTH … /* * Worst case scenario 16 in sensors (longest names_length) and the rest * temp sensors (second longest names_length). */ #define ABIT_UGURU3_SYSFS_NAMES_LENGTH … /* * All the macros below are named identical to the openguru2 program * reverse engineered by Louis Kruger, hence the names might not be 100% * logical. I could come up with better names, but I prefer keeping the names * identical so that this driver can be compared with his work more easily. */ /* Two i/o-ports are used by uGuru */ #define ABIT_UGURU3_BASE … #define ABIT_UGURU3_CMD … #define ABIT_UGURU3_DATA … #define ABIT_UGURU3_REGION_LENGTH … /* * The wait_xxx functions return this on success and the last contents * of the DATA register (0-255) on failure. */ #define ABIT_UGURU3_SUCCESS … /* uGuru status flags */ #define ABIT_UGURU3_STATUS_READY_FOR_READ … #define ABIT_UGURU3_STATUS_BUSY … /* Structures */ struct abituguru3_sensor_info { … }; /* Avoid use of flexible array members */ #define ABIT_UGURU3_MAX_DMI_NAMES … struct abituguru3_motherboard_info { … }; /* * For the Abit uGuru, we need to keep some data in memory. * The structure is dynamically allocated, at the same time when a new * abituguru3 device is allocated. */ struct abituguru3_data { … }; /* Constants */ static const struct abituguru3_motherboard_info abituguru3_motherboards[] = …; /* Insmod parameters */ static bool force; module_param(force, bool, 0); MODULE_PARM_DESC(…) …; /* Default verbose is 1, since this driver is still in the testing phase */ static bool verbose = …; module_param(verbose, bool, 0644); MODULE_PARM_DESC(…) …; static const char *never_happen = …; static const char *report_this = …; /* wait while the uguru is busy (usually after a write) */ static int abituguru3_wait_while_busy(struct abituguru3_data *data) { … } /* wait till uguru is ready to be read */ static int abituguru3_wait_for_read(struct abituguru3_data *data) { … } /* * This synchronizes us with the uGuru3's protocol state machine, this * must be done before each command. */ static int abituguru3_synchronize(struct abituguru3_data *data) { … } /* * Read count bytes from sensor sensor_addr in bank bank_addr and store the * result in buf */ static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset, u8 count, u8 *buf) { … } /* * Sensor settings are stored 1 byte per offset with the bytes * placed add consecutive offsets. */ static int abituguru3_read_increment_offset(struct abituguru3_data *data, u8 bank, u8 offset, u8 count, u8 *buf, int offset_count) { … } /* * Following are the sysfs callback functions. These functions expect: * sensor_device_attribute_2->index: index into the data->sensors array * sensor_device_attribute_2->nr: register offset, bitmask or NA. */ static struct abituguru3_data *abituguru3_update_device(struct device *dev); static ssize_t show_value(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t show_mask(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t show_label(struct device *dev, struct device_attribute *devattr, char *buf) { … } static ssize_t show_name(struct device *dev, struct device_attribute *devattr, char *buf) { … } /* Sysfs attr templates, the real entries are generated automatically. */ static const struct sensor_device_attribute_2 abituguru3_sysfs_templ[3][10] = …; static struct sensor_device_attribute_2 abituguru3_sysfs_attr[] = …; static int abituguru3_probe(struct platform_device *pdev) { … } static void abituguru3_remove(struct platform_device *pdev) { … } static struct abituguru3_data *abituguru3_update_device(struct device *dev) { … } static int abituguru3_suspend(struct device *dev) { … } static int abituguru3_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(abituguru3_pm, abituguru3_suspend, abituguru3_resume); static struct platform_driver abituguru3_driver = …; static int __init abituguru3_dmi_detect(void) { … } /* * FIXME: Manual detection should die eventually; we need to collect stable * DMI model names first before we can rely entirely on CONFIG_DMI. */ static int __init abituguru3_detect(void) { … } static struct platform_device *abituguru3_pdev; static int __init abituguru3_init(void) { … } static void __exit abituguru3_exit(void) { … } MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; module_init(…) …; module_exit(abituguru3_exit);
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