mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 13:06:50 +07:00
e4e458b45c
The calloc() and xcalloc() functions takes @nmemb first and then @size. Fix all w/ pattern "calloc\s*(\s*sizeof". Signed-off-by: Arjun Sreedharan <arjun024@gmail.com> Cc: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1417866043-1877-1-git-send-email-arjun024@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
597 lines
15 KiB
C
597 lines
15 KiB
C
/*
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* sysfs.c sysfs ABI access functions for TMON program
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*
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* Copyright (C) 2013 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 or later as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Author: Jacob Pan <jacob.jun.pan@linux.intel.com>
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*
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <dirent.h>
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#include <libintl.h>
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#include <ctype.h>
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#include <time.h>
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#include <syslog.h>
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#include <sys/time.h>
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#include <errno.h>
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#include "tmon.h"
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struct tmon_platform_data ptdata;
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const char *trip_type_name[] = {
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"critical",
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"hot",
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"passive",
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"active",
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};
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int sysfs_set_ulong(char *path, char *filename, unsigned long val)
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{
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FILE *fd;
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int ret = -1;
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char filepath[256];
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snprintf(filepath, 256, "%s/%s", path, filename);
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fd = fopen(filepath, "w");
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if (!fd) {
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syslog(LOG_ERR, "Err: open %s: %s\n", __func__, filepath);
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return ret;
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}
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ret = fprintf(fd, "%lu", val);
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fclose(fd);
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return 0;
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}
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/* history of thermal data, used for control algo */
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#define NR_THERMAL_RECORDS 3
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struct thermal_data_record trec[NR_THERMAL_RECORDS];
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int cur_thermal_record; /* index to the trec array */
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static int sysfs_get_ulong(char *path, char *filename, unsigned long *p_ulong)
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{
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FILE *fd;
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int ret = -1;
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char filepath[256];
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snprintf(filepath, 256, "%s/%s", path, filename);
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fd = fopen(filepath, "r");
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if (!fd) {
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syslog(LOG_ERR, "Err: open %s: %s\n", __func__, filepath);
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return ret;
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}
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ret = fscanf(fd, "%lu", p_ulong);
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fclose(fd);
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return 0;
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}
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static int sysfs_get_string(char *path, char *filename, char *str)
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{
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FILE *fd;
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int ret = -1;
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char filepath[256];
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snprintf(filepath, 256, "%s/%s", path, filename);
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fd = fopen(filepath, "r");
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if (!fd) {
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syslog(LOG_ERR, "Err: open %s: %s\n", __func__, filepath);
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return ret;
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}
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ret = fscanf(fd, "%256s", str);
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fclose(fd);
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return ret;
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}
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/* get states of the cooling device instance */
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static int probe_cdev(struct cdev_info *cdi, char *path)
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{
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sysfs_get_string(path, "type", cdi->type);
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sysfs_get_ulong(path, "max_state", &cdi->max_state);
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sysfs_get_ulong(path, "cur_state", &cdi->cur_state);
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syslog(LOG_INFO, "%s: %s: type %s, max %lu, curr %lu inst %d\n",
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__func__, path,
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cdi->type, cdi->max_state, cdi->cur_state, cdi->instance);
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return 0;
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}
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static int str_to_trip_type(char *name)
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{
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int i;
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for (i = 0; i < NR_THERMAL_TRIP_TYPE; i++) {
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if (!strcmp(name, trip_type_name[i]))
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return i;
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}
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return -ENOENT;
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}
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/* scan and fill in trip point info for a thermal zone and trip point id */
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static int get_trip_point_data(char *tz_path, int tzid, int tpid)
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{
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char filename[256];
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char temp_str[256];
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int trip_type;
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if (tpid >= MAX_NR_TRIP)
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return -EINVAL;
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/* check trip point type */
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snprintf(filename, sizeof(filename), "trip_point_%d_type", tpid);
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sysfs_get_string(tz_path, filename, temp_str);
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trip_type = str_to_trip_type(temp_str);
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if (trip_type < 0) {
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syslog(LOG_ERR, "%s:%s no matching type\n", __func__, temp_str);
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return -ENOENT;
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}
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ptdata.tzi[tzid].tp[tpid].type = trip_type;
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syslog(LOG_INFO, "%s:tz:%d tp:%d:type:%s type id %d\n", __func__, tzid,
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tpid, temp_str, trip_type);
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/* TODO: check attribute */
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return 0;
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}
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/* return instance id for file format such as trip_point_4_temp */
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static int get_instance_id(char *name, int pos, int skip)
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{
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char *ch;
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int i = 0;
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ch = strtok(name, "_");
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while (ch != NULL) {
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++i;
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syslog(LOG_INFO, "%s:%s:%s:%d", __func__, name, ch, i);
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ch = strtok(NULL, "_");
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if (pos == i)
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return atol(ch + skip);
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}
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return -1;
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}
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/* Find trip point info of a thermal zone */
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static int find_tzone_tp(char *tz_name, char *d_name, struct tz_info *tzi,
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int tz_id)
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{
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int tp_id;
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unsigned long temp_ulong;
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if (strstr(d_name, "trip_point") &&
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strstr(d_name, "temp")) {
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/* check if trip point temp is non-zero
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* ignore 0/invalid trip points
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*/
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sysfs_get_ulong(tz_name, d_name, &temp_ulong);
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if (temp_ulong < MAX_TEMP_KC) {
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tzi->nr_trip_pts++;
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/* found a valid trip point */
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tp_id = get_instance_id(d_name, 2, 0);
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syslog(LOG_DEBUG, "tzone %s trip %d temp %lu tpnode %s",
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tz_name, tp_id, temp_ulong, d_name);
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if (tp_id < 0 || tp_id >= MAX_NR_TRIP) {
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syslog(LOG_ERR, "Failed to find TP inst %s\n",
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d_name);
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return -1;
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}
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get_trip_point_data(tz_name, tz_id, tp_id);
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tzi->tp[tp_id].temp = temp_ulong;
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}
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}
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return 0;
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}
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/* check cooling devices for binding info. */
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static int find_tzone_cdev(struct dirent *nl, char *tz_name,
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struct tz_info *tzi, int tz_id, int cid)
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{
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unsigned long trip_instance = 0;
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char cdev_name_linked[256];
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char cdev_name[256];
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char cdev_trip_name[256];
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int cdev_id;
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if (nl->d_type == DT_LNK) {
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syslog(LOG_DEBUG, "TZ%d: cdev: %s cid %d\n", tz_id, nl->d_name,
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cid);
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tzi->nr_cdev++;
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if (tzi->nr_cdev > ptdata.nr_cooling_dev) {
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syslog(LOG_ERR, "Err: Too many cdev? %d\n",
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tzi->nr_cdev);
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return -EINVAL;
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}
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/* find the link to real cooling device record binding */
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snprintf(cdev_name, 256, "%s/%s", tz_name, nl->d_name);
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memset(cdev_name_linked, 0, sizeof(cdev_name_linked));
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if (readlink(cdev_name, cdev_name_linked,
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sizeof(cdev_name_linked) - 1) != -1) {
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cdev_id = get_instance_id(cdev_name_linked, 1,
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sizeof("device") - 1);
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syslog(LOG_DEBUG, "cdev %s linked to %s : %d\n",
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cdev_name, cdev_name_linked, cdev_id);
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tzi->cdev_binding |= (1 << cdev_id);
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/* find the trip point in which the cdev is binded to
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* in this tzone
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*/
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snprintf(cdev_trip_name, 256, "%s%s", nl->d_name,
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"_trip_point");
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sysfs_get_ulong(tz_name, cdev_trip_name,
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&trip_instance);
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/* validate trip point range, e.g. trip could return -1
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* when passive is enabled
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*/
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if (trip_instance > MAX_NR_TRIP)
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trip_instance = 0;
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tzi->trip_binding[cdev_id] |= 1 << trip_instance;
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syslog(LOG_DEBUG, "cdev %s -> trip:%lu: 0x%lx %d\n",
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cdev_name, trip_instance,
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tzi->trip_binding[cdev_id],
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cdev_id);
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}
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return 0;
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}
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return -ENODEV;
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}
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/*****************************************************************************
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* Before calling scan_tzones, thermal sysfs must be probed to determine
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* the number of thermal zones and cooling devices.
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* We loop through each thermal zone and fill in tz_info struct, i.e.
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* ptdata.tzi[]
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root@jacob-chiefriver:~# tree -d /sys/class/thermal/thermal_zone0
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/sys/class/thermal/thermal_zone0
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|-- cdev0 -> ../cooling_device4
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|-- cdev1 -> ../cooling_device3
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|-- cdev10 -> ../cooling_device7
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|-- cdev11 -> ../cooling_device6
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|-- cdev12 -> ../cooling_device5
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|-- cdev2 -> ../cooling_device2
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|-- cdev3 -> ../cooling_device1
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|-- cdev4 -> ../cooling_device0
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|-- cdev5 -> ../cooling_device12
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|-- cdev6 -> ../cooling_device11
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|-- cdev7 -> ../cooling_device10
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|-- cdev8 -> ../cooling_device9
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|-- cdev9 -> ../cooling_device8
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|-- device -> ../../../LNXSYSTM:00/device:62/LNXTHERM:00
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|-- power
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`-- subsystem -> ../../../../class/thermal
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*****************************************************************************/
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static int scan_tzones(void)
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{
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DIR *dir;
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struct dirent **namelist;
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char tz_name[256];
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int i, j, n, k = 0;
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if (!ptdata.nr_tz_sensor)
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return -1;
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for (i = 0; i <= ptdata.max_tz_instance; i++) {
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memset(tz_name, 0, sizeof(tz_name));
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snprintf(tz_name, 256, "%s/%s%d", THERMAL_SYSFS, TZONE, i);
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dir = opendir(tz_name);
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if (!dir) {
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syslog(LOG_INFO, "Thermal zone %s skipped\n", tz_name);
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continue;
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}
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/* keep track of valid tzones */
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n = scandir(tz_name, &namelist, 0, alphasort);
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if (n < 0)
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syslog(LOG_ERR, "scandir failed in %s", tz_name);
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else {
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sysfs_get_string(tz_name, "type", ptdata.tzi[k].type);
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ptdata.tzi[k].instance = i;
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/* detect trip points and cdev attached to this tzone */
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j = 0; /* index for cdev */
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ptdata.tzi[k].nr_cdev = 0;
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ptdata.tzi[k].nr_trip_pts = 0;
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while (n--) {
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char *temp_str;
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if (find_tzone_tp(tz_name, namelist[n]->d_name,
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&ptdata.tzi[k], k))
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break;
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temp_str = strstr(namelist[n]->d_name, "cdev");
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if (!temp_str) {
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free(namelist[n]);
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continue;
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}
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if (!find_tzone_cdev(namelist[n], tz_name,
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&ptdata.tzi[k], i, j))
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j++; /* increment cdev index */
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free(namelist[n]);
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}
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free(namelist);
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}
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/*TODO: reverse trip points */
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closedir(dir);
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syslog(LOG_INFO, "TZ %d has %d cdev\n", i,
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ptdata.tzi[k].nr_cdev);
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k++;
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}
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return 0;
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}
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static int scan_cdevs(void)
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{
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DIR *dir;
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struct dirent **namelist;
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char cdev_name[256];
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int i, n, k = 0;
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if (!ptdata.nr_cooling_dev) {
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fprintf(stderr, "No cooling devices found\n");
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return 0;
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}
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for (i = 0; i <= ptdata.max_cdev_instance; i++) {
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memset(cdev_name, 0, sizeof(cdev_name));
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snprintf(cdev_name, 256, "%s/%s%d", THERMAL_SYSFS, CDEV, i);
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dir = opendir(cdev_name);
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if (!dir) {
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syslog(LOG_INFO, "Cooling dev %s skipped\n", cdev_name);
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/* there is a gap in cooling device id, check again
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* for the same index.
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*/
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continue;
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}
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n = scandir(cdev_name, &namelist, 0, alphasort);
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if (n < 0)
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syslog(LOG_ERR, "scandir failed in %s", cdev_name);
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else {
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sysfs_get_string(cdev_name, "type", ptdata.cdi[k].type);
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ptdata.cdi[k].instance = i;
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if (strstr(ptdata.cdi[k].type, ctrl_cdev)) {
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ptdata.cdi[k].flag |= CDEV_FLAG_IN_CONTROL;
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syslog(LOG_DEBUG, "control cdev id %d\n", i);
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}
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while (n--)
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free(namelist[n]);
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free(namelist);
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}
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closedir(dir);
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k++;
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}
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return 0;
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}
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int probe_thermal_sysfs(void)
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{
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DIR *dir;
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struct dirent **namelist;
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int n;
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dir = opendir(THERMAL_SYSFS);
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if (!dir) {
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fprintf(stderr, "\nNo thermal sysfs, exit\n");
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return -1;
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}
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n = scandir(THERMAL_SYSFS, &namelist, 0, alphasort);
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if (n < 0)
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syslog(LOG_ERR, "scandir failed in thermal sysfs");
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else {
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/* detect number of thermal zones and cooling devices */
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while (n--) {
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int inst;
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if (strstr(namelist[n]->d_name, CDEV)) {
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inst = get_instance_id(namelist[n]->d_name, 1,
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sizeof("device") - 1);
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/* keep track of the max cooling device since
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* there may be gaps.
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*/
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if (inst > ptdata.max_cdev_instance)
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ptdata.max_cdev_instance = inst;
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syslog(LOG_DEBUG, "found cdev: %s %d %d\n",
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namelist[n]->d_name,
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ptdata.nr_cooling_dev,
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ptdata.max_cdev_instance);
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ptdata.nr_cooling_dev++;
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} else if (strstr(namelist[n]->d_name, TZONE)) {
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inst = get_instance_id(namelist[n]->d_name, 1,
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sizeof("zone") - 1);
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if (inst > ptdata.max_tz_instance)
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ptdata.max_tz_instance = inst;
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syslog(LOG_DEBUG, "found tzone: %s %d %d\n",
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namelist[n]->d_name,
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ptdata.nr_tz_sensor,
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ptdata.max_tz_instance);
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ptdata.nr_tz_sensor++;
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}
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free(namelist[n]);
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}
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free(namelist);
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}
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syslog(LOG_INFO, "found %d tzone(s), %d cdev(s), target zone %d\n",
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ptdata.nr_tz_sensor, ptdata.nr_cooling_dev,
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target_thermal_zone);
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closedir(dir);
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if (!ptdata.nr_tz_sensor) {
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fprintf(stderr, "\nNo thermal zones found, exit\n\n");
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return -1;
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}
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ptdata.tzi = calloc(ptdata.max_tz_instance+1, sizeof(struct tz_info));
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if (!ptdata.tzi) {
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fprintf(stderr, "Err: allocate tz_info\n");
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return -1;
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}
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/* we still show thermal zone information if there is no cdev */
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if (ptdata.nr_cooling_dev) {
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ptdata.cdi = calloc(ptdata.max_cdev_instance + 1,
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sizeof(struct cdev_info));
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if (!ptdata.cdi) {
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free(ptdata.tzi);
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fprintf(stderr, "Err: allocate cdev_info\n");
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return -1;
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}
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}
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/* now probe tzones */
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if (scan_tzones())
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return -1;
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if (scan_cdevs())
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return -1;
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return 0;
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}
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/* convert sysfs zone instance to zone array index */
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int zone_instance_to_index(int zone_inst)
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{
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int i;
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for (i = 0; i < ptdata.nr_tz_sensor; i++)
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if (ptdata.tzi[i].instance == zone_inst)
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return i;
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return -ENOENT;
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}
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/* read temperature of all thermal zones */
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int update_thermal_data()
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{
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int i;
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char tz_name[256];
|
|
static unsigned long samples;
|
|
|
|
if (!ptdata.nr_tz_sensor) {
|
|
syslog(LOG_ERR, "No thermal zones found!\n");
|
|
return -1;
|
|
}
|
|
|
|
/* circular buffer for keeping historic data */
|
|
if (cur_thermal_record >= NR_THERMAL_RECORDS)
|
|
cur_thermal_record = 0;
|
|
gettimeofday(&trec[cur_thermal_record].tv, NULL);
|
|
if (tmon_log) {
|
|
fprintf(tmon_log, "%lu ", ++samples);
|
|
fprintf(tmon_log, "%3.1f ", p_param.t_target);
|
|
}
|
|
for (i = 0; i < ptdata.nr_tz_sensor; i++) {
|
|
memset(tz_name, 0, sizeof(tz_name));
|
|
snprintf(tz_name, 256, "%s/%s%d", THERMAL_SYSFS, TZONE,
|
|
ptdata.tzi[i].instance);
|
|
sysfs_get_ulong(tz_name, "temp",
|
|
&trec[cur_thermal_record].temp[i]);
|
|
if (tmon_log)
|
|
fprintf(tmon_log, "%lu ",
|
|
trec[cur_thermal_record].temp[i]/1000);
|
|
}
|
|
for (i = 0; i < ptdata.nr_cooling_dev; i++) {
|
|
char cdev_name[256];
|
|
unsigned long val;
|
|
|
|
snprintf(cdev_name, 256, "%s/%s%d", THERMAL_SYSFS, CDEV,
|
|
ptdata.cdi[i].instance);
|
|
probe_cdev(&ptdata.cdi[i], cdev_name);
|
|
val = ptdata.cdi[i].cur_state;
|
|
if (val > 1000000)
|
|
val = 0;
|
|
if (tmon_log)
|
|
fprintf(tmon_log, "%lu ", val);
|
|
}
|
|
|
|
if (tmon_log) {
|
|
fprintf(tmon_log, "\n");
|
|
fflush(tmon_log);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void set_ctrl_state(unsigned long state)
|
|
{
|
|
char ctrl_cdev_path[256];
|
|
int i;
|
|
unsigned long cdev_state;
|
|
|
|
if (no_control)
|
|
return;
|
|
/* set all ctrl cdev to the same state */
|
|
for (i = 0; i < ptdata.nr_cooling_dev; i++) {
|
|
if (ptdata.cdi[i].flag & CDEV_FLAG_IN_CONTROL) {
|
|
if (ptdata.cdi[i].max_state < 10) {
|
|
strcpy(ctrl_cdev, "None.");
|
|
return;
|
|
}
|
|
/* scale to percentage of max_state */
|
|
cdev_state = state * ptdata.cdi[i].max_state/100;
|
|
syslog(LOG_DEBUG,
|
|
"ctrl cdev %d set state %lu scaled to %lu\n",
|
|
ptdata.cdi[i].instance, state, cdev_state);
|
|
snprintf(ctrl_cdev_path, 256, "%s/%s%d", THERMAL_SYSFS,
|
|
CDEV, ptdata.cdi[i].instance);
|
|
syslog(LOG_DEBUG, "ctrl cdev path %s", ctrl_cdev_path);
|
|
sysfs_set_ulong(ctrl_cdev_path, "cur_state",
|
|
cdev_state);
|
|
}
|
|
}
|
|
}
|
|
|
|
void get_ctrl_state(unsigned long *state)
|
|
{
|
|
char ctrl_cdev_path[256];
|
|
int ctrl_cdev_id = -1;
|
|
int i;
|
|
|
|
/* TODO: take average of all ctrl types. also consider change based on
|
|
* uevent. Take the first reading for now.
|
|
*/
|
|
for (i = 0; i < ptdata.nr_cooling_dev; i++) {
|
|
if (ptdata.cdi[i].flag & CDEV_FLAG_IN_CONTROL) {
|
|
ctrl_cdev_id = ptdata.cdi[i].instance;
|
|
syslog(LOG_INFO, "ctrl cdev %d get state\n",
|
|
ptdata.cdi[i].instance);
|
|
break;
|
|
}
|
|
}
|
|
if (ctrl_cdev_id == -1) {
|
|
*state = 0;
|
|
return;
|
|
}
|
|
snprintf(ctrl_cdev_path, 256, "%s/%s%d", THERMAL_SYSFS,
|
|
CDEV, ctrl_cdev_id);
|
|
sysfs_get_ulong(ctrl_cdev_path, "cur_state", state);
|
|
}
|
|
|
|
void free_thermal_data(void)
|
|
{
|
|
free(ptdata.tzi);
|
|
free(ptdata.cdi);
|
|
}
|