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cpufreq: brcmstb-avs-cpufreq: send S2_ENTER / S2_EXIT commands to AVS

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On suspend we send AVS_CMD_S2_ENTER and on resume AVS_CMD_S2_EXIT.
These are best effort calls, so we don't check the return code or take
any action if either of the calls fails.

Signed-off-by: Markus Mayer <mmayer@broadcom.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Markus Mayer 2020-05-28 11:20:14 -07:00 committed by Viresh Kumar
parent 08535ccdd7
commit d48461b2c7
1 changed files with 11 additions and 1 deletions
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12
drivers/cpufreq/brcmstb-avs-cpufreq.c
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@ -506,7 +506,14 @@ static int brcm_avs_suspend(struct cpufreq_policy *policy)
* 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);
ret = brcm_avs_get_pstate(priv, &priv->pmap.state);
if (ret)
return ret;
/* This is best effort. Nothing to do if it fails. */
(void)__issue_avs_command(priv, AVS_CMD_S2_ENTER, 0, 0, NULL);
return 0;
}
static int brcm_avs_resume(struct cpufreq_policy *policy)
@ -514,6 +521,9 @@ static int brcm_avs_resume(struct cpufreq_policy *policy)
struct private_data *priv = policy->driver_data;
int ret;
/* This is best effort. Nothing to do if it fails. */
(void)__issue_avs_command(priv, AVS_CMD_S2_EXIT, 0, 0, NULL);
ret = brcm_avs_set_pmap(priv, &priv->pmap);
if (ret == -EEXIST) {
struct platform_device *pdev = cpufreq_get_driver_data();