Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-07 14:32:23 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

cpufreq: brcmstb-avs-cpufreq: properly retrieve P-state upon suspend

Browse Source 
The AVS GET_PMAP command does return a P-state along with the P-map
information. However, that P-state is the initial P-state when the
P-map was first downloaded to AVS. It is *not* the current P-state.

Therefore, we explicitly retrieve the P-state using the GET_PSTATE
command.

Signed-off-by: Markus Mayer <mmayer@broadcom.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Markus Mayer 2016-12-19 12:10:28 -08:00 committed by Rafael J. Wysocki
parent 9b02c54bc9
commit 3c223c19ae
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/cpufreq/brcmstb-avs-cpufreq.c
View File

@ -784,8 +784,19 @@ static int brcm_avs_target_index(struct cpufreq_policy *policy,
static int brcm_avs_suspend(struct cpufreq_policy *policy)
{
struct private_data *priv = policy->driver_data;
int ret;
return brcm_avs_get_pmap(priv, &priv->pmap);
ret = brcm_avs_get_pmap(priv, &priv->pmap);
if (ret)
return ret;
/*
* We can't use the P-state returned by brcm_avs_get_pmap(), since
* that's the initial P-state from when the P-map was downloaded to the
* AVS co-processor, not necessarily the P-state we are running at now.
* So, we get the current P-state explicitly.
*/
return brcm_avs_get_pstate(priv, &priv->pmap.state);
}
static int brcm_avs_resume(struct cpufreq_policy *policy)