static power consumed by these cpus (See 2.2 Static power).
1.1.4 struct thermal_cooling_device *of_cpufreq_power_cooling_register(
- struct device_node *np, const struct cpumask *clip_cpus, u32 capacitance,
- get_static_t plat_static_func)
+ struct cpufreq_policy *policy)
Similar to cpufreq_power_cooling_register, this function register a
cpufreq cooling device with power extensions using the device tree
device.
The `plat_static_func` parameter of `cpufreq_power_cooling_register()`
-and `of_cpufreq_power_cooling_register()` is optional. If you don't
-provide it, only dynamic power will be considered.
+is optional. If you don't provide it, only dynamic power will be
+considered.
2.1 Dynamic power
static void bL_cpufreq_ready(struct cpufreq_policy *policy)
{
- struct device *cpu_dev = get_cpu_device(policy->cpu);
int cur_cluster = cpu_to_cluster(policy->cpu);
- struct device_node *np;
/* Do not register a cpu_cooling device if we are in IKS mode */
if (cur_cluster >= MAX_CLUSTERS)
return;
- np = of_node_get(cpu_dev->of_node);
- if (WARN_ON(!np))
- return;
-
- if (of_find_property(np, "#cooling-cells", NULL)) {
- u32 power_coefficient = 0;
-
- of_property_read_u32(np, "dynamic-power-coefficient",
- &power_coefficient);
-
- cdev[cur_cluster] = of_cpufreq_power_cooling_register(np,
- policy, power_coefficient, NULL);
- if (IS_ERR(cdev[cur_cluster])) {
- dev_err(cpu_dev,
- "running cpufreq without cooling device: %ld\n",
- PTR_ERR(cdev[cur_cluster]));
- cdev[cur_cluster] = NULL;
- }
- }
- of_node_put(np);
+ cdev[cur_cluster] = of_cpufreq_power_cooling_register(policy);
}
static struct cpufreq_driver bL_cpufreq_driver = {
static void cpufreq_ready(struct cpufreq_policy *policy)
{
struct private_data *priv = policy->driver_data;
- struct device_node *np = of_node_get(priv->cpu_dev->of_node);
- if (WARN_ON(!np))
- return;
-
- /*
- * For now, just loading the cooling device;
- * thermal DT code takes care of matching them.
- */
- if (of_find_property(np, "#cooling-cells", NULL)) {
- u32 power_coefficient = 0;
-
- of_property_read_u32(np, "dynamic-power-coefficient",
- &power_coefficient);
-
- priv->cdev = of_cpufreq_power_cooling_register(np,
- policy, power_coefficient, NULL);
- if (IS_ERR(priv->cdev)) {
- dev_err(priv->cpu_dev,
- "running cpufreq without cooling device: %ld\n",
- PTR_ERR(priv->cdev));
-
- priv->cdev = NULL;
- }
- }
-
- of_node_put(np);
+ priv->cdev = of_cpufreq_power_cooling_register(policy);
}
static struct cpufreq_driver dt_cpufreq_driver = {
static void mtk_cpufreq_ready(struct cpufreq_policy *policy)
{
struct mtk_cpu_dvfs_info *info = policy->driver_data;
- struct device_node *np = of_node_get(info->cpu_dev->of_node);
- u32 capacitance = 0;
- if (WARN_ON(!np))
- return;
-
- if (of_find_property(np, "#cooling-cells", NULL)) {
- of_property_read_u32(np, DYNAMIC_POWER, &capacitance);
-
- info->cdev = of_cpufreq_power_cooling_register(np,
- policy, capacitance, NULL);
-
- if (IS_ERR(info->cdev)) {
- dev_err(info->cpu_dev,
- "running cpufreq without cooling device: %ld\n",
- PTR_ERR(info->cdev));
-
- info->cdev = NULL;
- }
- }
-
- of_node_put(np);
+ info->cdev = of_cpufreq_power_cooling_register(policy);
}
static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
static void qoriq_cpufreq_ready(struct cpufreq_policy *policy)
{
struct cpu_data *cpud = policy->driver_data;
- struct device_node *np = of_get_cpu_node(policy->cpu, NULL);
- if (of_find_property(np, "#cooling-cells", NULL)) {
- cpud->cdev = of_cpufreq_cooling_register(np, policy);
-
- if (IS_ERR(cpud->cdev) && PTR_ERR(cpud->cdev) != -ENOSYS) {
- pr_err("cpu%d is not running as cooling device: %ld\n",
- policy->cpu, PTR_ERR(cpud->cdev));
-
- cpud->cdev = NULL;
- }
- }
-
- of_node_put(np);
+ cpud->cdev = of_cpufreq_power_cooling_register(policy);
}
static struct cpufreq_driver qoriq_cpufreq_driver = {
/**
* of_cpufreq_power_cooling_register() - create cpufreq cooling device with power extensions
- * @np: a valid struct device_node to the cooling device device tree node
- * @policy: cpufreq policy
- * @capacitance: dynamic power coefficient for these cpus
- * @plat_static_func: function to calculate the static power consumed by these
- * cpus (optional)
+ * @policy: CPUFreq policy.
*
* This interface function registers the cpufreq cooling device with
* the name "thermal-cpufreq-%x". This api can support multiple
* instances of cpufreq cooling devices. Using this API, the cpufreq
- * cooling device will be linked to the device tree node provided.
+ * cooling device will be linked to the device tree node of the provided
+ * policy's CPU.
* Using this function, the cooling device will implement the power
* extensions by using a simple cpu power model. The cpus must have
* registered their OPPs using the OPP library.
*
- * An optional @plat_static_func may be provided to calculate the
- * static power consumed by these cpus. If the platform's static
- * power consumption is unknown or negligible, make it NULL.
+ * It also takes into account, if property present in policy CPU node, the
+ * static power consumed by the cpu.
*
* Return: a valid struct thermal_cooling_device pointer on success,
- * on failure, it returns a corresponding ERR_PTR().
+ * and NULL on failure.
*/
struct thermal_cooling_device *
-of_cpufreq_power_cooling_register(struct device_node *np,
- struct cpufreq_policy *policy,
- u32 capacitance,
- get_static_t plat_static_func)
+of_cpufreq_power_cooling_register(struct cpufreq_policy *policy)
{
- if (!np)
- return ERR_PTR(-EINVAL);
+ struct device_node *np = of_get_cpu_node(policy->cpu, NULL);
+ struct thermal_cooling_device *cdev = NULL;
+ u32 capacitance = 0;
+
+ if (!np) {
+ pr_err("cpu_cooling: OF node not available for cpu%d\n",
+ policy->cpu);
+ return NULL;
+ }
- return __cpufreq_cooling_register(np, policy, capacitance,
- plat_static_func);
+ if (of_find_property(np, "#cooling-cells", NULL)) {
+ of_property_read_u32(np, "dynamic-power-coefficient",
+ &capacitance);
+
+ cdev = __cpufreq_cooling_register(np, policy, capacitance,
+ NULL);
+ if (IS_ERR(cdev)) {
+ pr_err("cpu_cooling: cpu%d is not running as cooling device: %ld\n",
+ policy->cpu, PTR_ERR(cdev));
+ cdev = NULL;
+ }
+ }
+
+ of_node_put(np);
+ return cdev;
}
EXPORT_SYMBOL(of_cpufreq_power_cooling_register);
struct cpufreq_policy *policy);
struct thermal_cooling_device *
-of_cpufreq_power_cooling_register(struct device_node *np,
- struct cpufreq_policy *policy,
- u32 capacitance,
- get_static_t plat_static_func);
+of_cpufreq_power_cooling_register(struct cpufreq_policy *policy);
#else
static inline struct thermal_cooling_device *
of_cpufreq_cooling_register(struct device_node *np,
}
static inline struct thermal_cooling_device *
-of_cpufreq_power_cooling_register(struct device_node *np,
- struct cpufreq_policy *policy,
- u32 capacitance,
- get_static_t plat_static_func)
+of_cpufreq_power_cooling_register(struct cpufreq_policy *policy)
{
return NULL;
}
}
static inline struct thermal_cooling_device *
-of_cpufreq_power_cooling_register(struct device_node *np,
- struct cpufreq_policy *policy,
- u32 capacitance,
- get_static_t plat_static_func)
+of_cpufreq_power_cooling_register(struct cpufreq_policy *policy)
{
return NULL;
}
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