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| author | Markus Mayer <markus.mayer@broadcom.com> | 2020-05-28 20:20:14 +0200 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2020-07-30 07:27:44 +0200 |
| commit | d48461b2c7c39c89dec598e6ea6e188fdaf418e7 (patch) | |
| tree | 103795bacf2ed0a5d75f1d2efa7da9154e6b47fd /drivers/cpufreq | |
| parent | cpufreq: brcmstb-avs-cpufreq: Support polling AVS firmware (diff) | |
| download | linux-d48461b2c7c39c89dec598e6ea6e188fdaf418e7.tar.xz linux-d48461b2c7c39c89dec598e6ea6e188fdaf418e7.zip | |
cpufreq: brcmstb-avs-cpufreq: send S2_ENTER / S2_EXIT commands to AVS
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>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/brcmstb-avs-cpufreq.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmstb-avs-cpufreq.c index 79a0538a531a..3e31e5d28b79 100644 --- a/drivers/cpufreq/brcmstb-avs-cpufreq.c +++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c @@ -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(); |