diff options
author | pi-cheng.chen <pi-cheng.chen@linaro.org> | 2015-03-06 10:55:52 +0800 |
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committer | Vincent Guittot <vincent.guittot@linaro.org> | 2015-04-16 11:53:23 +0200 |
commit | fa1c0fbbc19026c97aafb22a01bbc9e6af96e71a (patch) | |
tree | 05e7e0e4f84754315b73c91c24e797db20cfe950 | |
parent | 4882535501f6bc7cf18df3bc356d86f93bf89b87 (diff) |
cpufreq-dt: add clock domain support
Signed-off-by: pi-cheng.chen <pi-cheng.chen@linaro.org>
-rw-r--r-- | drivers/cpufreq/cpufreq-dt.c | 14 | ||||
-rw-r--r-- | include/linux/cpufreq-dt.h | 11 |
2 files changed, 25 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index bab67db54b7e..c6386fe701ef 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -296,6 +296,20 @@ static int cpufreq_init(struct cpufreq_policy *policy) pd = cpufreq_get_driver_data(); if (!pd || !pd->independent_clocks) cpumask_setall(policy->cpus); + else if (pd && !list_empty(&pd->domain_list)) { + struct list_head *domain_node; + struct cpufreq_cpu_domain *domain; + + list_for_each(domain_node, &pd->domain_list) { + domain = container_of(domain_node, + struct cpufreq_cpu_domain, node); + if (!cpumask_test_cpu(policy->cpu, &domain->cpus)) + continue; + + cpumask_copy(policy->cpus, &domain->cpus); + break; + } + } of_node_put(np); diff --git a/include/linux/cpufreq-dt.h b/include/linux/cpufreq-dt.h index 0414009e2c30..a37df9aab3ce 100644 --- a/include/linux/cpufreq-dt.h +++ b/include/linux/cpufreq-dt.h @@ -10,6 +10,12 @@ #ifndef __CPUFREQ_DT_H__ #define __CPUFREQ_DT_H__ +struct cpufreq_cpu_domain { + struct list_head node; + /* CPUs share the same clock/power domain */ + cpumask_t cpus; +}; + struct cpufreq_dt_platform_data { /* * True when each CPU has its own clock to control its @@ -17,6 +23,11 @@ struct cpufreq_dt_platform_data { * clock. */ bool independent_clocks; + /* + * Specify a list of CPU domains in which all CPUs inside shares + * the same clock and power source when independent_clocks is true. + */ + struct list_head domain_list; }; #endif /* __CPUFREQ_DT_H__ */ |