On Thu, Jun 23, 2022 at 11:15:09AM +0800, Jinzhou Su wrote:
When system resumes from S3, the CPPC enable register will be cleared and reset to 0. So sets this bit to enable CPPC interface by writing 1 to this register.
Signed-off-by: Jinzhou Su Jinzhou.Su@amd.com
drivers/cpufreq/amd-pstate.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 7be38bc6a673..9ac75c1cde9c 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -566,6 +566,28 @@ static int amd_pstate_cpu_exit(struct cpufreq_policy *policy) return 0; } +static int amd_pstate_cpu_resume(struct cpufreq_policy *policy) +{
- int ret;
- ret = amd_pstate_enable(true);
- if (ret)
pr_err("failed to enable amd-pstate during resume, return %d\n", ret);- return ret;
+}
+static int amd_pstate_cpu_suspend(struct cpufreq_policy *policy) +{
- int ret;
- ret = amd_pstate_enable(false);
- if (ret)
pr_err("failed to disable amd-pstate during suspend, return %d\n", ret);- return ret;
+}
/* Sysfs attributes */ /* @@ -636,6 +658,8 @@ static struct cpufreq_driver amd_pstate_driver = { .target = amd_pstate_target, .init = amd_pstate_cpu_init, .exit = amd_pstate_cpu_exit,
- .suspend = amd_pstate_cpu_suspend,
- .resume = amd_pstate_cpu_resume, .set_boost = amd_pstate_set_boost, .name = "amd-pstate", .attr = amd_pstate_attr,
-- 2.32.0
<formletter>
This is not the correct way to submit patches for inclusion in the stable kernel tree. Please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html for how to do this properly.
</formletter>