Currently the DT based cpufreq driver is missing some way to check which CPUs share clocks. In the 1st patch, CPU clock/power domain information is added to the platform_data of cpufreq-dt so that cpufreq-dt driver could check which CPUs share clock/power.
Signed-off-by: pi-cheng.chen <[email protected]> --- drivers/cpufreq/cpufreq-dt.c | 15 +++++++++++++++ include/linux/cpufreq-dt.h | 6 ++++++ 2 files changed, 21 insertions(+) diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index fde97d6..ff8c266 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -296,6 +296,21 @@ 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; + + list_for_each(domain_node, &pd->domain_list) { + struct cpufreq_cpu_domain *domain; + + 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 0414009..92bffd3 100644 --- a/include/linux/cpufreq-dt.h +++ b/include/linux/cpufreq-dt.h @@ -10,6 +10,11 @@ #ifndef __CPUFREQ_DT_H__ #define __CPUFREQ_DT_H__ +struct cpufreq_cpu_domain { + struct list_head node; + cpumask_t cpus; +}; + struct cpufreq_dt_platform_data { /* * True when each CPU has its own clock to control its @@ -17,6 +22,7 @@ struct cpufreq_dt_platform_data { * clock. */ bool independent_clocks; + struct list_head domain_list; }; #endif /* __CPUFREQ_DT_H__ */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
