diff options
| -rw-r--r-- | Documentation/thermal/cpu-cooling-api.txt | 7 | ||||
| -rw-r--r-- | drivers/cpufreq/arm_big_little.c | 23 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq-dt.c | 27 | ||||
| -rw-r--r-- | drivers/cpufreq/mediatek-cpufreq.c | 22 | ||||
| -rw-r--r-- | drivers/cpufreq/qoriq-cpufreq.c | 14 | ||||
| -rw-r--r-- | drivers/thermal/cpu_cooling.c | 49 | ||||
| -rw-r--r-- | include/linux/cpu_cooling.h | 15 |
7 files changed, 41 insertions, 116 deletions
diff --git a/Documentation/thermal/cpu-cooling-api.txt b/Documentation/thermal/cpu-cooling-api.txt index 71653584cd03..4f6f5e9bb4d6 100644 --- a/Documentation/thermal/cpu-cooling-api.txt +++ b/Documentation/thermal/cpu-cooling-api.txt @@ -51,8 +51,7 @@ Dynamic power). "plat_static_func" is a function to calculate the 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 @@ -76,8 +75,8 @@ cpu. If you are using CONFIG_CPUFREQ_DT then the 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 diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c index 65ec5f01aa8d..3d5ed4ef3927 100644 --- a/drivers/cpufreq/arm_big_little.c +++ b/drivers/cpufreq/arm_big_little.c @@ -526,34 +526,13 @@ static int bL_cpufreq_exit(struct cpufreq_policy *policy) 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 = { diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 545946ad0752..1e7bec7694ab 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -319,33 +319,8 @@ static int cpufreq_exit(struct cpufreq_policy *policy) 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 = { diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index e0d5090b303d..6ff783e1b18a 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -310,28 +310,8 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy, 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) diff --git a/drivers/cpufreq/qoriq-cpufreq.c b/drivers/cpufreq/qoriq-cpufreq.c index 4ada55b8856e..3a665c18e14e 100644 --- a/drivers/cpufreq/qoriq-cpufreq.c +++ b/drivers/cpufreq/qoriq-cpufreq.c @@ -275,20 +275,8 @@ static int qoriq_cpufreq_target(struct cpufreq_policy *policy, 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 = { diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index dc63aba092e4..a31eb03c788e 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -873,38 +873,51 @@ EXPORT_SYMBOL(cpufreq_power_cooling_register); /** * 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); diff --git a/include/linux/cpu_cooling.h b/include/linux/cpu_cooling.h index d4292ebc5c8b..f09d4feb34f4 100644 --- a/include/linux/cpu_cooling.h +++ b/include/linux/cpu_cooling.h @@ -56,10 +56,7 @@ of_cpufreq_cooling_register(struct device_node *np, 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, @@ -69,10 +66,7 @@ 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; } @@ -105,10 +99,7 @@ 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; } |
