LXR linux/drivers/hwmon/abx500.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) ST-Ericsson 2010 - 2013
   4 * Author: Martin Persson <martin.persson@stericsson.com>
   5 *         Hongbo Zhang <hongbo.zhang@linaro.com>
   6 */
   7
   8#ifndef _ABX500_H
   9#define _ABX500_H
  10
  11#define NUM_SENSORS 5
  12
  13struct abx500_temp;
  14
  15/*
  16 * struct abx500_temp_ops - abx500 chip specific ops
  17 * @read_sensor: reads gpadc output
  18 * @irq_handler: irq handler
  19 * @show_name: hwmon device name
  20 * @show_label: hwmon attribute label
  21 * @is_visible: is attribute visible
  22 */
  23struct abx500_temp_ops {
  24        int (*read_sensor)(struct abx500_temp *, u8, int *);
  25        int (*irq_handler)(int, struct abx500_temp *);
  26        ssize_t (*show_name)(struct device *,
  27                        struct device_attribute *, char *);
  28        ssize_t (*show_label) (struct device *,
  29                        struct device_attribute *, char *);
  30        int (*is_visible)(struct attribute *, int);
  31};
  32
  33/*
  34 * struct abx500_temp - representation of temp mon device
  35 * @pdev: platform device
  36 * @hwmon_dev: hwmon device
  37 * @ops: abx500 chip specific ops
  38 * @gpadc_addr: gpadc channel address
  39 * @min: sensor temperature min value
  40 * @max: sensor temperature max value
  41 * @max_hyst: sensor temperature hysteresis value for max limit
  42 * @min_alarm: sensor temperature min alarm
  43 * @max_alarm: sensor temperature max alarm
  44 * @work: delayed work scheduled to monitor temperature periodically
  45 * @work_active: True if work is active
  46 * @lock: mutex
  47 * @monitored_sensors: number of monitored sensors
  48 * @plat_data: private usage, usually points to platform specific data
  49 */
  50struct abx500_temp {
  51        struct platform_device *pdev;
  52        struct device *hwmon_dev;
  53        struct abx500_temp_ops ops;
  54        u8 gpadc_addr[NUM_SENSORS];
  55        unsigned long min[NUM_SENSORS];
  56        unsigned long max[NUM_SENSORS];
  57        unsigned long max_hyst[NUM_SENSORS];
  58        bool min_alarm[NUM_SENSORS];
  59        bool max_alarm[NUM_SENSORS];
  60        struct delayed_work work;
  61        bool work_active;
  62        struct mutex lock;
  63        int monitored_sensors;
  64        void *plat_data;
  65};
  66
  67int abx500_hwmon_init(struct abx500_temp *data);
  68
  69#endif /* _ABX500_H */
  70