MT8173 cpufreq driver use of_cpufreq_power_cooling_register registering cooling devices with dynamic power coefficient.
Signed-off-by: Dawei Chien <dawei.ch...@mediatek.com> --- This patch is base on patchset: https://lkml.org/lkml/2015/11/17/251 --- drivers/cpufreq/mt8173-cpufreq.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c index 83001dc..4d39468 100644 --- a/drivers/cpufreq/mt8173-cpufreq.c +++ b/drivers/cpufreq/mt8173-cpufreq.c @@ -263,24 +263,34 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy, return 0; } +#define DYNAMIC_POWER "dynamic-power-coefficient" + 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; if (WARN_ON(!np)) return; if (of_find_property(np, "#cooling-cells", NULL)) { - info->cdev = of_cpufreq_cooling_register(np, - policy->related_cpus); + if (!info->cdev) { + of_property_read_u32(np, DYNAMIC_POWER, &capacitance); + + info->cdev = of_cpufreq_power_cooling_register(np, + policy->related_cpus, + capacitance, + NULL); - if (IS_ERR(info->cdev)) { - dev_err(info->cpu_dev, - "running cpufreq without cooling device: %ld\n", - PTR_ERR(info->cdev)); + if (IS_ERR(info->cdev)) { + dev_err(info->cpu_dev, + "running cpufreq without cooling device: %ld\n", + PTR_ERR(info->cdev)); - info->cdev = NULL; + info->cdev = NULL; + } } } @@ -460,7 +470,9 @@ static int mtk_cpufreq_exit(struct cpufreq_policy *policy) { struct mtk_cpu_dvfs_info *info = policy->driver_data; - cpufreq_cooling_unregister(info->cdev); + if (info->cdev) + cpufreq_cooling_unregister(info->cdev); + dev_pm_opp_free_cpufreq_table(info->cpu_dev, &policy->freq_table); mtk_cpu_dvfs_info_release(info); kfree(info); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
