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Commit 3c223c19 authored by Markus Mayer's avatar Markus Mayer Committed by Rafael J. Wysocki
Browse files

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



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: default avatarMarkus Mayer <mmayer@broadcom.com>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 9b02c54b

drivers/cpufreq/brcmstb-avs-cpufreq.c

+12 −1
Original line number Diff line number Diff line
@@ -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;



	ret = brcm_avs_get_pmap(priv, &priv->pmap);

	if (ret)

		return ret;



	return brcm_avs_get_pmap(priv, &priv->pmap);

	/*

	 * 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)