linux-kernel - [Patch v5 2/6] soc: qcom: rpmhpd: Introduce function to retrieve power domain performance state count

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Message-Id: <20200320014107.26087-3-thara.gopinath@linaro.org>
Date:   Thu, 19 Mar 2020 21:41:03 -0400
From:   Thara Gopinath <thara.gopinath@...aro.org>
To:     rui.zhang@...el.com, ulf.hansson@...aro.org,
        daniel.lezcano@...aro.org, bjorn.andersson@...aro.org,
        agross@...nel.org, robh@...nel.org
Cc:     amit.kucheria@...durent.com, mark.rutland@....com,
        rjw@...ysocki.net, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [Patch v5 2/6] soc: qcom: rpmhpd: Introduce function to retrieve power domain performance state count

Populate .get_performace_state_count in genpd ops to retrieve the count of
performance states supported by a rpmh power domain.

Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
---
 drivers/soc/qcom/rpmhpd.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/soc/qcom/rpmhpd.c b/drivers/soc/qcom/rpmhpd.c
index 4d264d0672c4..7142409a3b77 100644
--- a/drivers/soc/qcom/rpmhpd.c
+++ b/drivers/soc/qcom/rpmhpd.c
@@ -341,6 +341,13 @@ static unsigned int rpmhpd_get_performance_state(struct generic_pm_domain *genpd
 	return dev_pm_opp_get_level(opp);
 }
 
+static int rpmhpd_performance_states_count(struct generic_pm_domain *domain)
+{
+	struct rpmhpd *pd = domain_to_rpmhpd(domain);
+
+	return pd->level_count;
+}
+
 static int rpmhpd_update_level_mapping(struct rpmhpd *rpmhpd)
 {
 	int i;
@@ -429,6 +436,8 @@ static int rpmhpd_probe(struct platform_device *pdev)
 		rpmhpds[i]->pd.power_on = rpmhpd_power_on;
 		rpmhpds[i]->pd.set_performance_state = rpmhpd_set_performance_state;
 		rpmhpds[i]->pd.opp_to_performance_state = rpmhpd_get_performance_state;
+		rpmhpds[i]->pd.get_performance_state_count =
+					rpmhpd_performance_states_count;
 		pm_genpd_init(&rpmhpds[i]->pd, NULL, true);
 
 		data->domains[i] = &rpmhpds[i]->pd;
-- 
2.20.1