diff options
Diffstat (limited to 'drivers/cpufreq/scmi-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/scmi-cpufreq.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c index 4ee23f4ebf4a..3b4f6bfb2f4c 100644 --- a/drivers/cpufreq/scmi-cpufreq.c +++ b/drivers/cpufreq/scmi-cpufreq.c @@ -30,6 +30,7 @@ struct scmi_data { static struct scmi_protocol_handle *ph; static const struct scmi_perf_proto_ops *perf_ops; +static struct cpufreq_driver scmi_cpufreq_driver; static unsigned int scmi_cpufreq_get_rate(unsigned int cpu) { @@ -144,6 +145,35 @@ scmi_get_cpu_power(struct device *cpu_dev, unsigned long *power, return 0; } +static int +scmi_get_rate_limit(u32 domain, bool has_fast_switch) +{ + int ret, rate_limit; + + if (has_fast_switch) { + /* + * Fast channels are used whenever available, + * so use their rate_limit value if populated. + */ + ret = perf_ops->fast_switch_rate_limit(ph, domain, + &rate_limit); + if (!ret && rate_limit) + return rate_limit; + } + + ret = perf_ops->rate_limit_get(ph, domain, &rate_limit); + if (ret) + return 0; + + return rate_limit; +} + +static struct freq_attr *scmi_cpufreq_hw_attr[] = { + &cpufreq_freq_attr_scaling_available_freqs, + NULL, + NULL, +}; + static int scmi_cpufreq_init(struct cpufreq_policy *policy) { int ret, nr_opp, domain; @@ -250,6 +280,20 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy) policy->fast_switch_possible = perf_ops->fast_switch_possible(ph, domain); + policy->transition_delay_us = + scmi_get_rate_limit(domain, policy->fast_switch_possible); + + if (policy_has_boost_freq(policy)) { + ret = cpufreq_enable_boost_support(); + if (ret) { + dev_warn(cpu_dev, "failed to enable boost: %d\n", ret); + goto out_free_opp; + } else { + scmi_cpufreq_hw_attr[1] = &cpufreq_freq_attr_scaling_boost_freqs; + scmi_cpufreq_driver.boost_enabled = true; + } + } + return 0; out_free_opp: @@ -308,7 +352,7 @@ static struct cpufreq_driver scmi_cpufreq_driver = { CPUFREQ_NEED_INITIAL_FREQ_CHECK | CPUFREQ_IS_COOLING_DEV, .verify = cpufreq_generic_frequency_table_verify, - .attr = cpufreq_generic_attr, + .attr = scmi_cpufreq_hw_attr, .target_index = scmi_cpufreq_set_target, .fast_switch = scmi_cpufreq_fast_switch, .get = scmi_cpufreq_get_rate, |