diff options
| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2015-09-08 18:41:03 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-09-09 02:22:55 +0200 |
| commit | 953ba9ff77f3d08635712eaeffb218d46889b58a (patch) | |
| tree | 46aa18e75ff08674183b8fe9610304a1368e9b58 /drivers | |
| parent | cpufreq: allow cpufreq_generic_suspend() to work without suspend frequency (diff) | |
| download | linux-953ba9ff77f3d08635712eaeffb218d46889b58a.tar.xz linux-953ba9ff77f3d08635712eaeffb218d46889b58a.zip | |
cpufreq-dt: add suspend frequency support
Add suspend frequency support and if needed set it to
the frequency obtained from the suspend opp (can be defined
using opp-v2 bindings and is optional).
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/cpufreq/cpufreq-dt.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 3b64c203bf99..7c0d70e2a861 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -196,6 +196,7 @@ static int cpufreq_init(struct cpufreq_policy *policy) struct device *cpu_dev; struct regulator *cpu_reg; struct clk *cpu_clk; + struct dev_pm_opp *suspend_opp; unsigned long min_uV = ~0, max_uV = 0; unsigned int transition_latency; bool need_update = false; @@ -333,6 +334,13 @@ static int cpufreq_init(struct cpufreq_policy *policy) policy->driver_data = priv; policy->clk = cpu_clk; + + rcu_read_lock(); + suspend_opp = dev_pm_opp_get_suspend_opp(cpu_dev); + if (suspend_opp) + policy->suspend_freq = dev_pm_opp_get_freq(suspend_opp) / 1000; + rcu_read_unlock(); + ret = cpufreq_table_validate_and_show(policy, freq_table); if (ret) { dev_err(cpu_dev, "%s: invalid frequency table: %d\n", __func__, @@ -423,6 +431,7 @@ static struct cpufreq_driver dt_cpufreq_driver = { .ready = cpufreq_ready, .name = "cpufreq-dt", .attr = cpufreq_dt_attr, + .suspend = cpufreq_generic_suspend, }; static int dt_cpufreq_probe(struct platform_device *pdev) |