diff options
Diffstat (limited to 'drivers/thermal')
-rw-r--r-- | drivers/thermal/cpu_cooling.c | 50 |
1 files changed, 27 insertions, 23 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index 32ff6dc5efee..7687922cb02e 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -118,7 +118,7 @@ enum cpufreq_cooling_property { /** * get_property - fetch a property of interest for a given cpu. - * @cpu: cpu for which the property is required + * @cpufreq_dev: cpufreq_dev for which the property is required * @input: query parameter * @output: query return * @property: type of query (frequency, level) @@ -135,20 +135,20 @@ enum cpufreq_cooling_property { * * Return: 0 on success, -EINVAL when invalid parameters are passed. */ -static int get_property(unsigned int cpu, unsigned long input, - unsigned int *output, +static int get_property(struct cpufreq_cooling_device *cpufreq_dev, + unsigned long input, unsigned int *output, enum cpufreq_cooling_property property) { int i; - unsigned long max_level = 0, level = 0; + unsigned long level = 0; unsigned int freq = CPUFREQ_ENTRY_INVALID; int descend = -1; - struct cpufreq_frequency_table *pos, *table = - cpufreq_frequency_get_table(cpu); + struct cpufreq_frequency_table *pos, *table; if (!output) return -EINVAL; + table = cpufreq_frequency_get_table(cpumask_first(&cpufreq_dev->allowed_cpus)); if (!table) return -EINVAL; @@ -162,18 +162,10 @@ static int get_property(unsigned int cpu, unsigned long input, descend = freq > pos->frequency; freq = pos->frequency; - max_level++; } - /* No valid cpu frequency entry */ - if (max_level == 0) - return -EINVAL; - - /* max_level is an index, not a counter */ - max_level--; - if (property == GET_FREQ) - level = descend ? input : (max_level - input); + level = descend ? input : (cpufreq_dev->max_level - input); i = 0; cpufreq_for_each_valid_entry(pos, table) { @@ -186,7 +178,7 @@ static int get_property(unsigned int cpu, unsigned long input, if (property == GET_LEVEL && (unsigned int)input == freq) { /* get level by frequency */ - *output = descend ? i : (max_level - i); + *output = descend ? i : (cpufreq_dev->max_level - i); return 0; } if (property == GET_FREQ && level == i) { @@ -213,12 +205,25 @@ static int get_property(unsigned int cpu, unsigned long input, */ unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq) { - unsigned int val; + struct cpufreq_cooling_device *cpufreq_dev; - if (get_property(cpu, (unsigned long)freq, &val, GET_LEVEL)) - return THERMAL_CSTATE_INVALID; + mutex_lock(&cooling_cpufreq_lock); + list_for_each_entry(cpufreq_dev, &cpufreq_dev_list, node) { + if (cpumask_test_cpu(cpu, &cpufreq_dev->allowed_cpus)) { + unsigned int val; + + mutex_unlock(&cooling_cpufreq_lock); + if (get_property(cpufreq_dev, (unsigned long)freq, &val, + GET_LEVEL)) + return THERMAL_CSTATE_INVALID; + + return (unsigned long)val; + } + } + mutex_unlock(&cooling_cpufreq_lock); - return (unsigned long)val; + pr_err("%s: cpu:%d not part of any cooling device\n", __func__, cpu); + return THERMAL_CSTATE_INVALID; } EXPORT_SYMBOL_GPL(cpufreq_cooling_get_level); @@ -323,7 +328,7 @@ static int cpufreq_set_cur_state(struct thermal_cooling_device *cdev, if (cpufreq_device->cpufreq_state == state) return 0; - ret = get_property(cpu, state, &clip_freq, GET_FREQ); + ret = get_property(cpufreq_device, state, &clip_freq, GET_FREQ); if (ret) return ret; @@ -381,8 +386,7 @@ __cpufreq_cooling_register(struct device_node *np, if (!cpufreq_dev) return ERR_PTR(-ENOMEM); - ret = get_property(cpumask_any(clip_cpus), 0, &cpufreq_dev->cpufreq_val, - GET_FREQ); + ret = get_property(cpufreq_dev, 0, &cpufreq_dev->cpufreq_val, GET_FREQ); if (ret) { pr_err("%s: Failed to get frequency: %d", __func__, ret); cool_dev = ERR_PTR(ret); |