2019-05-23 02:14:51 -07:00
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// SPDX-License-Identifier: GPL-2.0-or-later
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2014-07-08 02:08:38 -07:00
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/*
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* IBM PowerNV platform sensors for temperature/fan/voltage/power
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* Copyright (C) 2014 IBM
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*/
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#define DRVNAME "ibmpowernv"
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#define pr_fmt(fmt) DRVNAME ": " fmt
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/of.h>
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <asm/opal.h>
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#include <linux/err.h>
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2015-04-08 10:19:50 -07:00
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#include <asm/cputhreads.h>
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2015-04-08 21:02:47 -07:00
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#include <asm/smp.h>
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2014-07-08 02:08:38 -07:00
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#define MAX_ATTR_LEN 32
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2015-04-08 10:19:49 -07:00
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#define MAX_LABEL_LEN 64
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2014-07-08 02:08:38 -07:00
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/* Sensor suffix name from DT */
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#define DT_FAULT_ATTR_SUFFIX "faulted"
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#define DT_DATA_ATTR_SUFFIX "data"
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#define DT_THRESHOLD_ATTR_SUFFIX "thrs"
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/*
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* Enumerates all the types of sensors in the POWERNV platform and does index
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* into 'struct sensor_group'
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*/
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enum sensors {
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FAN,
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TEMP,
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POWER_SUPPLY,
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POWER_INPUT,
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2017-06-19 22:08:13 -07:00
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CURRENT,
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2018-05-07 03:25:38 -07:00
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ENERGY,
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MAX_SENSOR_TYPE,
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};
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2015-04-08 10:19:48 -07:00
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#define INVALID_INDEX (-1U)
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2017-06-19 22:08:12 -07:00
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/*
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* 'compatible' string properties for sensor types as defined in old
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* PowerNV firmware (skiboot). These are ordered as 'enum sensors'.
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*/
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static const char * const legacy_compatibles[] = {
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"ibm,opal-sensor-cooling-fan",
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"ibm,opal-sensor-amb-temp",
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"ibm,opal-sensor-power-supply",
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"ibm,opal-sensor-power"
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};
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2014-07-08 02:08:38 -07:00
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static struct sensor_group {
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const char *name; /* matches property 'sensor-type' */
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struct attribute_group group;
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u32 attr_count;
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u32 hwmon_index;
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} sensor_groups[] = {
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{ "fan" },
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{ "temp" },
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{ "in" },
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2017-06-19 22:08:13 -07:00
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{ "power" },
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{ "curr" },
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{ "energy" },
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};
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struct sensor_data {
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u32 id; /* An opaque id of the firmware for each sensor */
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u32 hwmon_index;
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u32 opal_index;
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enum sensors type;
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char label[MAX_LABEL_LEN];
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2014-07-08 02:08:38 -07:00
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char name[MAX_ATTR_LEN];
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struct device_attribute dev_attr;
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2018-07-24 02:13:09 -07:00
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struct sensor_group_data *sgrp_data;
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};
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struct sensor_group_data {
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struct mutex mutex;
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u32 gid;
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bool enable;
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2014-07-08 02:08:38 -07:00
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};
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struct platform_data {
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const struct attribute_group *attr_groups[MAX_SENSOR_TYPE + 1];
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struct sensor_group_data *sgrp_data;
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u32 sensors_count; /* Total count of sensors from each group */
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2018-07-24 02:13:09 -07:00
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u32 nr_sensor_groups; /* Total number of sensor groups */
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2014-07-08 02:08:38 -07:00
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};
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static ssize_t show_sensor(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_data *sdata = container_of(devattr, struct sensor_data,
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dev_attr);
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ssize_t ret;
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2018-05-07 03:25:37 -07:00
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u64 x;
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2018-07-24 02:13:09 -07:00
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if (sdata->sgrp_data && !sdata->sgrp_data->enable)
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return -ENODATA;
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2018-05-07 03:25:37 -07:00
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ret = opal_get_sensor_data_u64(sdata->id, &x);
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2014-07-08 02:08:38 -07:00
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if (ret)
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return ret;
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/* Convert temperature to milli-degrees */
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2015-03-19 10:44:41 -07:00
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if (sdata->type == TEMP)
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2014-07-08 02:08:38 -07:00
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x *= 1000;
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/* Convert power to micro-watts */
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else if (sdata->type == POWER_INPUT)
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x *= 1000000;
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2018-05-07 03:25:37 -07:00
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return sprintf(buf, "%llu\n", x);
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2014-07-08 02:08:38 -07:00
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}
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2018-07-24 02:13:09 -07:00
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static ssize_t show_enable(struct device *dev,
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struct device_attribute *devattr, char *buf)
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{
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struct sensor_data *sdata = container_of(devattr, struct sensor_data,
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dev_attr);
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return sprintf(buf, "%u\n", sdata->sgrp_data->enable);
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}
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static ssize_t store_enable(struct device *dev,
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struct device_attribute *devattr,
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const char *buf, size_t count)
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{
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struct sensor_data *sdata = container_of(devattr, struct sensor_data,
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dev_attr);
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struct sensor_group_data *sgrp_data = sdata->sgrp_data;
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int ret;
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bool data;
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ret = kstrtobool(buf, &data);
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if (ret)
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return ret;
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ret = mutex_lock_interruptible(&sgrp_data->mutex);
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if (ret)
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return ret;
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if (data != sgrp_data->enable) {
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ret = sensor_group_enable(sgrp_data->gid, data);
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if (!ret)
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sgrp_data->enable = data;
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}
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if (!ret)
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ret = count;
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mutex_unlock(&sgrp_data->mutex);
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return ret;
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}
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2015-04-08 10:19:49 -07:00
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static ssize_t show_label(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_data *sdata = container_of(devattr, struct sensor_data,
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dev_attr);
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return sprintf(buf, "%s\n", sdata->label);
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}
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2018-10-28 10:16:51 -07:00
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static int get_logical_cpu(int hwcpu)
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2015-04-08 10:19:50 -07:00
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{
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int cpu;
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for_each_possible_cpu(cpu)
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if (get_hard_smp_processor_id(cpu) == hwcpu)
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return cpu;
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return -ENOENT;
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}
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2018-10-28 10:16:51 -07:00
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static void make_sensor_label(struct device_node *np,
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struct sensor_data *sdata, const char *label)
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{
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2015-04-08 10:19:50 -07:00
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u32 id;
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2015-04-08 10:19:49 -07:00
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size_t n;
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2020-03-11 00:39:44 -07:00
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n = scnprintf(sdata->label, sizeof(sdata->label), "%s", label);
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2015-04-08 10:19:50 -07:00
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/*
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* Core temp pretty print
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*/
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if (!of_property_read_u32(np, "ibm,pir", &id)) {
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int cpuid = get_logical_cpu(id);
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if (cpuid >= 0)
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/*
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* The digital thermal sensors are associated
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2016-09-12 22:47:41 -07:00
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* with a core.
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2015-04-08 10:19:50 -07:00
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*/
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2020-03-11 00:39:44 -07:00
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n += scnprintf(sdata->label + n,
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2016-09-12 22:47:41 -07:00
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sizeof(sdata->label) - n, " %d",
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cpuid);
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2015-04-08 10:19:50 -07:00
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else
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2020-03-11 00:39:44 -07:00
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n += scnprintf(sdata->label + n,
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2015-04-08 10:19:50 -07:00
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sizeof(sdata->label) - n, " phy%d", id);
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}
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/*
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* Membuffer pretty print
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*/
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if (!of_property_read_u32(np, "ibm,chip-id", &id))
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2020-03-11 00:39:44 -07:00
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n += scnprintf(sdata->label + n, sizeof(sdata->label) - n,
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2015-04-08 10:19:50 -07:00
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" %d", id & 0xffff);
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2015-04-08 10:19:49 -07:00
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}
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static int get_sensor_index_attr(const char *name, u32 *index, char *attr)
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2014-07-08 02:08:38 -07:00
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{
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char *hash_pos = strchr(name, '#');
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char buf[8] = { 0 };
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char *dash_pos;
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u32 copy_len;
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int err;
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if (!hash_pos)
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return -EINVAL;
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dash_pos = strchr(hash_pos, '-');
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if (!dash_pos)
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return -EINVAL;
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copy_len = dash_pos - hash_pos - 1;
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if (copy_len >= sizeof(buf))
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return -EINVAL;
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2023-09-18 22:22:51 -07:00
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memcpy(buf, hash_pos + 1, copy_len);
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2014-07-08 02:08:38 -07:00
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err = kstrtou32(buf, 10, index);
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if (err)
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return err;
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2020-11-12 02:57:15 -07:00
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strscpy(attr, dash_pos + 1, MAX_ATTR_LEN);
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2014-07-08 02:08:38 -07:00
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return 0;
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}
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2015-03-19 10:44:43 -07:00
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static const char *convert_opal_attr_name(enum sensors type,
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const char *opal_attr)
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{
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const char *attr_name = NULL;
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if (!strcmp(opal_attr, DT_FAULT_ATTR_SUFFIX)) {
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attr_name = "fault";
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} else if (!strcmp(opal_attr, DT_DATA_ATTR_SUFFIX)) {
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attr_name = "input";
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} else if (!strcmp(opal_attr, DT_THRESHOLD_ATTR_SUFFIX)) {
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if (type == TEMP)
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attr_name = "max";
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else if (type == FAN)
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attr_name = "min";
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}
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return attr_name;
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}
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2014-07-08 02:08:38 -07:00
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/*
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* This function translates the DT node name into the 'hwmon' attribute name.
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* IBMPOWERNV device node appear like cooling-fan#2-data, amb-temp#1-thrs etc.
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* which need to be mapped as fan2_input, temp1_max respectively before
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* populating them inside hwmon device class.
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*/
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2015-03-19 10:44:44 -07:00
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static const char *parse_opal_node_name(const char *node_name,
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enum sensors type, u32 *index)
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2014-07-08 02:08:38 -07:00
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{
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char attr_suffix[MAX_ATTR_LEN];
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2015-03-19 10:44:43 -07:00
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const char *attr_name;
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2014-07-08 02:08:38 -07:00
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int err;
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2015-03-19 10:44:44 -07:00
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err = get_sensor_index_attr(node_name, index, attr_suffix);
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if (err)
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return ERR_PTR(err);
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2014-07-08 02:08:38 -07:00
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2015-03-19 10:44:43 -07:00
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attr_name = convert_opal_attr_name(type, attr_suffix);
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if (!attr_name)
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2015-03-19 10:44:44 -07:00
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return ERR_PTR(-ENOENT);
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2014-07-08 02:08:38 -07:00
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2015-03-19 10:44:44 -07:00
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return attr_name;
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2014-07-08 02:08:38 -07:00
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}
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2015-03-19 10:44:42 -07:00
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static int get_sensor_type(struct device_node *np)
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{
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enum sensors type;
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2015-04-08 10:19:48 -07:00
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const char *str;
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2015-03-19 10:44:42 -07:00
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2017-06-19 22:08:12 -07:00
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for (type = 0; type < ARRAY_SIZE(legacy_compatibles); type++) {
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if (of_device_is_compatible(np, legacy_compatibles[type]))
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2015-03-19 10:44:42 -07:00
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return type;
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}
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2015-04-08 10:19:48 -07:00
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/*
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* Let's check if we have a newer device tree
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*/
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if (!of_device_is_compatible(np, "ibm,opal-sensor"))
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return MAX_SENSOR_TYPE;
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if (of_property_read_string(np, "sensor-type", &str))
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return MAX_SENSOR_TYPE;
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for (type = 0; type < MAX_SENSOR_TYPE; type++)
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if (!strcmp(str, sensor_groups[type].name))
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return type;
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2015-03-19 10:44:42 -07:00
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return MAX_SENSOR_TYPE;
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}
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2015-03-19 10:44:45 -07:00
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static u32 get_sensor_hwmon_index(struct sensor_data *sdata,
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struct sensor_data *sdata_table, int count)
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{
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int i;
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2015-04-08 10:19:48 -07:00
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/*
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* We don't use the OPAL index on newer device trees
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*/
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if (sdata->opal_index != INVALID_INDEX) {
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for (i = 0; i < count; i++)
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if (sdata_table[i].opal_index == sdata->opal_index &&
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|
|
|
sdata_table[i].type == sdata->type)
|
|
|
|
return sdata_table[i].hwmon_index;
|
|
|
|
}
|
2015-03-19 10:44:45 -07:00
|
|
|
return ++sensor_groups[sdata->type].hwmon_index;
|
|
|
|
}
|
|
|
|
|
2018-07-24 02:13:09 -07:00
|
|
|
static int init_sensor_group_data(struct platform_device *pdev,
|
|
|
|
struct platform_data *pdata)
|
|
|
|
{
|
|
|
|
struct sensor_group_data *sgrp_data;
|
|
|
|
struct device_node *groups, *sgrp;
|
|
|
|
int count = 0, ret = 0;
|
|
|
|
enum sensors type;
|
|
|
|
|
|
|
|
groups = of_find_compatible_node(NULL, NULL, "ibm,opal-sensor-group");
|
|
|
|
if (!groups)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
for_each_child_of_node(groups, sgrp) {
|
|
|
|
type = get_sensor_type(sgrp);
|
|
|
|
if (type != MAX_SENSOR_TYPE)
|
|
|
|
pdata->nr_sensor_groups++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!pdata->nr_sensor_groups)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
sgrp_data = devm_kcalloc(&pdev->dev, pdata->nr_sensor_groups,
|
|
|
|
sizeof(*sgrp_data), GFP_KERNEL);
|
|
|
|
if (!sgrp_data) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
for_each_child_of_node(groups, sgrp) {
|
|
|
|
u32 gid;
|
|
|
|
|
|
|
|
type = get_sensor_type(sgrp);
|
|
|
|
if (type == MAX_SENSOR_TYPE)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (of_property_read_u32(sgrp, "sensor-group-id", &gid))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (of_count_phandle_with_args(sgrp, "sensors", NULL) <= 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
sensor_groups[type].attr_count++;
|
|
|
|
sgrp_data[count].gid = gid;
|
|
|
|
mutex_init(&sgrp_data[count].mutex);
|
|
|
|
sgrp_data[count++].enable = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
pdata->sgrp_data = sgrp_data;
|
|
|
|
out:
|
|
|
|
of_node_put(groups);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct sensor_group_data *get_sensor_group(struct platform_data *pdata,
|
|
|
|
struct device_node *node,
|
|
|
|
enum sensors gtype)
|
|
|
|
{
|
|
|
|
struct sensor_group_data *sgrp_data = pdata->sgrp_data;
|
|
|
|
struct device_node *groups, *sgrp;
|
|
|
|
|
|
|
|
groups = of_find_compatible_node(NULL, NULL, "ibm,opal-sensor-group");
|
|
|
|
if (!groups)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
for_each_child_of_node(groups, sgrp) {
|
|
|
|
struct of_phandle_iterator it;
|
|
|
|
u32 gid;
|
|
|
|
int rc, i;
|
|
|
|
enum sensors type;
|
|
|
|
|
|
|
|
type = get_sensor_type(sgrp);
|
|
|
|
if (type != gtype)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (of_property_read_u32(sgrp, "sensor-group-id", &gid))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
of_for_each_phandle(&it, rc, sgrp, "sensors", NULL, 0)
|
|
|
|
if (it.phandle == node->phandle) {
|
|
|
|
of_node_put(it.node);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
for (i = 0; i < pdata->nr_sensor_groups; i++)
|
|
|
|
if (gid == sgrp_data[i].gid) {
|
|
|
|
of_node_put(sgrp);
|
|
|
|
of_node_put(groups);
|
|
|
|
return &sgrp_data[i];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
of_node_put(groups);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2014-11-05 04:15:14 -07:00
|
|
|
static int populate_attr_groups(struct platform_device *pdev)
|
2014-07-08 02:08:38 -07:00
|
|
|
{
|
|
|
|
struct platform_data *pdata = platform_get_drvdata(pdev);
|
|
|
|
const struct attribute_group **pgroups = pdata->attr_groups;
|
|
|
|
struct device_node *opal, *np;
|
|
|
|
enum sensors type;
|
2018-07-24 02:13:09 -07:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = init_sensor_group_data(pdev, pdata);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
2014-07-08 02:08:38 -07:00
|
|
|
|
|
|
|
opal = of_find_node_by_path("/ibm,opal/sensors");
|
|
|
|
for_each_child_of_node(opal, np) {
|
2015-04-08 10:19:49 -07:00
|
|
|
const char *label;
|
|
|
|
|
2015-03-19 10:44:42 -07:00
|
|
|
type = get_sensor_type(np);
|
2015-04-08 10:19:49 -07:00
|
|
|
if (type == MAX_SENSOR_TYPE)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
sensor_groups[type].attr_count++;
|
|
|
|
|
|
|
|
/*
|
2017-05-28 21:46:01 -07:00
|
|
|
* add attributes for labels, min and max
|
2015-04-08 10:19:49 -07:00
|
|
|
*/
|
|
|
|
if (!of_property_read_string(np, "label", &label))
|
2015-03-19 10:44:42 -07:00
|
|
|
sensor_groups[type].attr_count++;
|
2023-03-10 07:47:06 -07:00
|
|
|
if (of_property_present(np, "sensor-data-min"))
|
2017-05-28 21:46:01 -07:00
|
|
|
sensor_groups[type].attr_count++;
|
2023-03-10 07:47:06 -07:00
|
|
|
if (of_property_present(np, "sensor-data-max"))
|
2017-05-28 21:46:01 -07:00
|
|
|
sensor_groups[type].attr_count++;
|
2014-07-08 02:08:38 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
of_node_put(opal);
|
|
|
|
|
|
|
|
for (type = 0; type < MAX_SENSOR_TYPE; type++) {
|
treewide: devm_kzalloc() -> devm_kcalloc()
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:
devm_kzalloc(handle, a * b, gfp)
with:
devm_kcalloc(handle, a * b, gfp)
as well as handling cases of:
devm_kzalloc(handle, a * b * c, gfp)
with:
devm_kzalloc(handle, array3_size(a, b, c), gfp)
as it's slightly less ugly than:
devm_kcalloc(handle, array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
devm_kzalloc(handle, 4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@
(
devm_kzalloc(HANDLE,
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
devm_kzalloc(HANDLE,
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@
(
devm_kzalloc(HANDLE,
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@
(
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE,
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * E2
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * (E2)
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 14:07:58 -07:00
|
|
|
sensor_groups[type].group.attrs = devm_kcalloc(&pdev->dev,
|
|
|
|
sensor_groups[type].attr_count + 1,
|
|
|
|
sizeof(struct attribute *),
|
2014-07-08 02:08:38 -07:00
|
|
|
GFP_KERNEL);
|
|
|
|
if (!sensor_groups[type].group.attrs)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
pgroups[type] = &sensor_groups[type].group;
|
|
|
|
pdata->sensors_count += sensor_groups[type].attr_count;
|
|
|
|
sensor_groups[type].attr_count = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-04-08 10:19:47 -07:00
|
|
|
static void create_hwmon_attr(struct sensor_data *sdata, const char *attr_name,
|
|
|
|
ssize_t (*show)(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
2018-07-24 02:13:09 -07:00
|
|
|
char *buf),
|
|
|
|
ssize_t (*store)(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count))
|
2015-04-08 10:19:47 -07:00
|
|
|
{
|
|
|
|
snprintf(sdata->name, MAX_ATTR_LEN, "%s%d_%s",
|
|
|
|
sensor_groups[sdata->type].name, sdata->hwmon_index,
|
|
|
|
attr_name);
|
|
|
|
|
|
|
|
sysfs_attr_init(&sdata->dev_attr.attr);
|
|
|
|
sdata->dev_attr.attr.name = sdata->name;
|
|
|
|
sdata->dev_attr.show = show;
|
2018-07-24 02:13:09 -07:00
|
|
|
if (store) {
|
|
|
|
sdata->dev_attr.store = store;
|
|
|
|
sdata->dev_attr.attr.mode = 0664;
|
|
|
|
} else {
|
|
|
|
sdata->dev_attr.attr.mode = 0444;
|
|
|
|
}
|
2015-04-08 10:19:47 -07:00
|
|
|
}
|
|
|
|
|
2017-05-28 21:46:01 -07:00
|
|
|
static void populate_sensor(struct sensor_data *sdata, int od, int hd, int sid,
|
|
|
|
const char *attr_name, enum sensors type,
|
|
|
|
const struct attribute_group *pgroup,
|
2018-07-24 02:13:09 -07:00
|
|
|
struct sensor_group_data *sgrp_data,
|
2017-05-28 21:46:01 -07:00
|
|
|
ssize_t (*show)(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
2018-07-24 02:13:09 -07:00
|
|
|
char *buf),
|
|
|
|
ssize_t (*store)(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count))
|
2017-05-28 21:46:01 -07:00
|
|
|
{
|
|
|
|
sdata->id = sid;
|
|
|
|
sdata->type = type;
|
|
|
|
sdata->opal_index = od;
|
|
|
|
sdata->hwmon_index = hd;
|
2018-07-24 02:13:09 -07:00
|
|
|
create_hwmon_attr(sdata, attr_name, show, store);
|
2017-05-28 21:46:01 -07:00
|
|
|
pgroup->attrs[sensor_groups[type].attr_count++] = &sdata->dev_attr.attr;
|
2018-07-24 02:13:09 -07:00
|
|
|
sdata->sgrp_data = sgrp_data;
|
2017-05-28 21:46:01 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static char *get_max_attr(enum sensors type)
|
|
|
|
{
|
|
|
|
switch (type) {
|
|
|
|
case POWER_INPUT:
|
|
|
|
return "input_highest";
|
|
|
|
default:
|
|
|
|
return "highest";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *get_min_attr(enum sensors type)
|
|
|
|
{
|
|
|
|
switch (type) {
|
|
|
|
case POWER_INPUT:
|
|
|
|
return "input_lowest";
|
|
|
|
default:
|
|
|
|
return "lowest";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-07-08 02:08:38 -07:00
|
|
|
/*
|
|
|
|
* Iterate through the device tree for each child of 'sensors' node, create
|
|
|
|
* a sysfs attribute file, the file is named by translating the DT node name
|
|
|
|
* to the name required by the higher 'hwmon' driver like fan1_input, temp1_max
|
|
|
|
* etc..
|
|
|
|
*/
|
2014-11-05 04:15:14 -07:00
|
|
|
static int create_device_attrs(struct platform_device *pdev)
|
2014-07-08 02:08:38 -07:00
|
|
|
{
|
|
|
|
struct platform_data *pdata = platform_get_drvdata(pdev);
|
|
|
|
const struct attribute_group **pgroups = pdata->attr_groups;
|
|
|
|
struct device_node *opal, *np;
|
|
|
|
struct sensor_data *sdata;
|
|
|
|
u32 count = 0;
|
2018-07-24 02:13:09 -07:00
|
|
|
u32 group_attr_id[MAX_SENSOR_TYPE] = {0};
|
2014-07-08 02:08:38 -07:00
|
|
|
|
treewide: devm_kzalloc() -> devm_kcalloc()
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:
devm_kzalloc(handle, a * b, gfp)
with:
devm_kcalloc(handle, a * b, gfp)
as well as handling cases of:
devm_kzalloc(handle, a * b * c, gfp)
with:
devm_kzalloc(handle, array3_size(a, b, c), gfp)
as it's slightly less ugly than:
devm_kcalloc(handle, array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
devm_kzalloc(handle, 4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@
(
devm_kzalloc(HANDLE,
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
devm_kzalloc(HANDLE,
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@
(
devm_kzalloc(HANDLE,
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@
(
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE,
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * E2
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * (E2)
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 14:07:58 -07:00
|
|
|
sdata = devm_kcalloc(&pdev->dev,
|
|
|
|
pdata->sensors_count, sizeof(*sdata),
|
2014-07-08 02:08:38 -07:00
|
|
|
GFP_KERNEL);
|
2018-07-24 02:13:09 -07:00
|
|
|
if (!sdata)
|
|
|
|
return -ENOMEM;
|
2014-07-08 02:08:38 -07:00
|
|
|
|
2018-07-24 02:13:09 -07:00
|
|
|
opal = of_find_node_by_path("/ibm,opal/sensors");
|
2014-07-08 02:08:38 -07:00
|
|
|
for_each_child_of_node(opal, np) {
|
2018-07-24 02:13:09 -07:00
|
|
|
struct sensor_group_data *sgrp_data;
|
2015-03-19 10:44:44 -07:00
|
|
|
const char *attr_name;
|
2018-07-24 02:13:09 -07:00
|
|
|
u32 opal_index, hw_id;
|
|
|
|
u32 sensor_id;
|
2015-04-08 10:19:49 -07:00
|
|
|
const char *label;
|
2018-07-24 02:13:09 -07:00
|
|
|
enum sensors type;
|
2015-03-19 10:44:44 -07:00
|
|
|
|
2015-03-19 10:44:42 -07:00
|
|
|
type = get_sensor_type(np);
|
2014-07-08 02:08:38 -07:00
|
|
|
if (type == MAX_SENSOR_TYPE)
|
|
|
|
continue;
|
|
|
|
|
2015-04-08 10:19:48 -07:00
|
|
|
/*
|
|
|
|
* Newer device trees use a "sensor-data" property
|
|
|
|
* name for input.
|
|
|
|
*/
|
|
|
|
if (of_property_read_u32(np, "sensor-id", &sensor_id) &&
|
|
|
|
of_property_read_u32(np, "sensor-data", &sensor_id)) {
|
2014-07-08 02:08:38 -07:00
|
|
|
dev_info(&pdev->dev,
|
2018-08-27 18:52:21 -07:00
|
|
|
"'sensor-id' missing in the node '%pOFn'\n",
|
|
|
|
np);
|
2014-07-08 02:08:38 -07:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2014-07-31 21:38:47 -07:00
|
|
|
sdata[count].id = sensor_id;
|
2014-07-08 02:08:38 -07:00
|
|
|
sdata[count].type = type;
|
2015-03-19 10:44:44 -07:00
|
|
|
|
2015-04-08 10:19:48 -07:00
|
|
|
/*
|
|
|
|
* If we can not parse the node name, it means we are
|
|
|
|
* running on a newer device tree. We can just forget
|
|
|
|
* about the OPAL index and use a defaut value for the
|
|
|
|
* hwmon attribute name
|
|
|
|
*/
|
2015-03-19 10:44:44 -07:00
|
|
|
attr_name = parse_opal_node_name(np->name, type, &opal_index);
|
|
|
|
if (IS_ERR(attr_name)) {
|
2015-04-08 10:19:48 -07:00
|
|
|
attr_name = "input";
|
|
|
|
opal_index = INVALID_INDEX;
|
2015-03-19 10:44:44 -07:00
|
|
|
}
|
|
|
|
|
2018-07-24 02:13:09 -07:00
|
|
|
hw_id = get_sensor_hwmon_index(&sdata[count], sdata, count);
|
|
|
|
sgrp_data = get_sensor_group(pdata, np, type);
|
|
|
|
populate_sensor(&sdata[count], opal_index, hw_id, sensor_id,
|
|
|
|
attr_name, type, pgroups[type], sgrp_data,
|
|
|
|
show_sensor, NULL);
|
|
|
|
count++;
|
2015-04-08 10:19:49 -07:00
|
|
|
|
|
|
|
if (!of_property_read_string(np, "label", &label)) {
|
|
|
|
/*
|
|
|
|
* For the label attribute, we can reuse the
|
|
|
|
* "properties" of the previous "input"
|
|
|
|
* attribute. They are related to the same
|
|
|
|
* sensor.
|
|
|
|
*/
|
|
|
|
|
|
|
|
make_sensor_label(np, &sdata[count], label);
|
2018-07-24 02:13:09 -07:00
|
|
|
populate_sensor(&sdata[count], opal_index, hw_id,
|
2017-05-28 21:46:01 -07:00
|
|
|
sensor_id, "label", type, pgroups[type],
|
2018-07-24 02:13:09 -07:00
|
|
|
NULL, show_label, NULL);
|
2017-05-28 21:46:01 -07:00
|
|
|
count++;
|
|
|
|
}
|
2015-04-08 10:19:49 -07:00
|
|
|
|
2017-05-28 21:46:01 -07:00
|
|
|
if (!of_property_read_u32(np, "sensor-data-max", &sensor_id)) {
|
|
|
|
attr_name = get_max_attr(type);
|
2018-07-24 02:13:09 -07:00
|
|
|
populate_sensor(&sdata[count], opal_index, hw_id,
|
2017-05-28 21:46:01 -07:00
|
|
|
sensor_id, attr_name, type,
|
2018-07-24 02:13:09 -07:00
|
|
|
pgroups[type], sgrp_data, show_sensor,
|
|
|
|
NULL);
|
2017-05-28 21:46:01 -07:00
|
|
|
count++;
|
|
|
|
}
|
2015-04-08 10:19:49 -07:00
|
|
|
|
2017-05-28 21:46:01 -07:00
|
|
|
if (!of_property_read_u32(np, "sensor-data-min", &sensor_id)) {
|
|
|
|
attr_name = get_min_attr(type);
|
2018-07-24 02:13:09 -07:00
|
|
|
populate_sensor(&sdata[count], opal_index, hw_id,
|
2017-05-28 21:46:01 -07:00
|
|
|
sensor_id, attr_name, type,
|
2018-07-24 02:13:09 -07:00
|
|
|
pgroups[type], sgrp_data, show_sensor,
|
|
|
|
NULL);
|
|
|
|
count++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (sgrp_data && !sgrp_data->enable) {
|
|
|
|
sgrp_data->enable = true;
|
|
|
|
hw_id = ++group_attr_id[type];
|
|
|
|
populate_sensor(&sdata[count], opal_index, hw_id,
|
|
|
|
sgrp_data->gid, "enable", type,
|
|
|
|
pgroups[type], sgrp_data, show_enable,
|
|
|
|
store_enable);
|
2017-05-28 21:46:01 -07:00
|
|
|
count++;
|
2015-04-08 10:19:49 -07:00
|
|
|
}
|
2014-07-08 02:08:38 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
of_node_put(opal);
|
2018-07-24 02:13:09 -07:00
|
|
|
return 0;
|
2014-07-08 02:08:38 -07:00
|
|
|
}
|
|
|
|
|
2014-11-05 04:15:14 -07:00
|
|
|
static int ibmpowernv_probe(struct platform_device *pdev)
|
2014-07-08 02:08:38 -07:00
|
|
|
{
|
|
|
|
struct platform_data *pdata;
|
|
|
|
struct device *hwmon_dev;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
|
|
|
|
if (!pdata)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
platform_set_drvdata(pdev, pdata);
|
|
|
|
pdata->sensors_count = 0;
|
2018-07-24 02:13:09 -07:00
|
|
|
pdata->nr_sensor_groups = 0;
|
2014-07-08 02:08:38 -07:00
|
|
|
err = populate_attr_groups(pdev);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
/* Create sysfs attribute data for each sensor found in the DT */
|
|
|
|
err = create_device_attrs(pdev);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
/* Finally, register with hwmon */
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, DRVNAME,
|
|
|
|
pdata,
|
|
|
|
pdata->attr_groups);
|
|
|
|
|
|
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
|
|
}
|
|
|
|
|
2014-11-05 04:15:14 -07:00
|
|
|
static const struct platform_device_id opal_sensor_driver_ids[] = {
|
|
|
|
{
|
|
|
|
.name = "opal-sensor",
|
|
|
|
},
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(platform, opal_sensor_driver_ids);
|
|
|
|
|
2015-09-23 05:44:48 -07:00
|
|
|
static const struct of_device_id opal_sensor_match[] = {
|
|
|
|
{ .compatible = "ibm,opal-sensor" },
|
|
|
|
{ },
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, opal_sensor_match);
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2014-07-08 02:08:38 -07:00
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static struct platform_driver ibmpowernv_driver = {
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2014-11-05 04:15:14 -07:00
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.probe = ibmpowernv_probe,
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.id_table = opal_sensor_driver_ids,
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.driver = {
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.name = DRVNAME,
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2015-09-23 05:44:48 -07:00
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.of_match_table = opal_sensor_match,
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2014-07-08 02:08:38 -07:00
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},
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};
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2014-11-12 01:36:47 -07:00
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module_platform_driver(ibmpowernv_driver);
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2014-07-08 02:08:38 -07:00
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MODULE_AUTHOR("Neelesh Gupta <neelegup@linux.vnet.ibm.com>");
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MODULE_DESCRIPTION("IBM POWERNV platform sensors");
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|
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MODULE_LICENSE("GPL");
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