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From:   Thara Gopinath <thara.gopinath@linaro.org>
To:     edubezval@gmail.com, rui.zhang@intel.com, ulf.hansson@linaro.org,
        daniel.lezcano@linaro.org, bjorn.andersson@linaro.org,
        agross@kernel.org
Cc:     amit.kucheria@verdurent.com, mark.rutland@arm.com,
        rjw@rjwysocki.net, linux-pm@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v3 5/7] soc: qcom: Extend RPMh power controller driver to register warming devices.
Date:   Wed, 16 Oct 2019 15:37:19 -0400
Message-Id: <1571254641-13626-6-git-send-email-thara.gopinath@linaro.org>
In-Reply-To: <1571254641-13626-1-git-send-email-thara.gopinath@linaro.org>
References: <1571254641-13626-1-git-send-email-thara.gopinath@linaro.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

RPMh power control hosts power domains that can be used as
thermal warming devices. Register these power domains
with the generic power domain warming device thermal framework.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
---
 drivers/soc/qcom/rpmhpd.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/qcom/rpmhpd.c b/drivers/soc/qcom/rpmhpd.c
index 9d37534..88ba615 100644
--- a/drivers/soc/qcom/rpmhpd.c
+++ b/drivers/soc/qcom/rpmhpd.c
@@ -11,6 +11,7 @@
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>
+#include <linux/pwr_domain_warming.h>
 #include <soc/qcom/cmd-db.h>
 #include <soc/qcom/rpmh.h>
 #include <dt-bindings/power/qcom-rpmpd.h>
@@ -333,6 +334,7 @@ static int rpmhpd_probe(struct platform_device *pdev)
 	struct genpd_onecell_data *data;
 	struct rpmhpd **rpmhpds;
 	const struct rpmhpd_desc *desc;
+	struct device_node *child;
 
 	desc = of_device_get_match_data(dev);
 	if (!desc)
@@ -396,7 +398,24 @@ static int rpmhpd_probe(struct platform_device *pdev)
 					       &rpmhpds[i]->pd);
 	}
 
-	return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
+	ret = of_genpd_add_provider_onecell(pdev->dev.of_node, data);
+
+	if (ret)
+		return ret;
+
+	for_each_available_child_of_node(dev->of_node, child) {
+		if (!of_find_property(child, "#cooling-cells", NULL))
+			continue;
+
+		for (i = 0; i < num_pds; i++)
+			if (strcmp(child->name, rpmhpds[i]->pd.name) == 0)
+				break;
+		if (i == num_pds)
+			continue;
+		pwr_domain_warming_register(child, &rpmhpds[i]->pd);
+	}
+
+	return 0;
 }
 
 static struct platform_driver rpmhpd_driver = {
-- 
2.1.4