linux-kernel - [PATCH RESEND v5 2/5] interconnect: icc-rpm: Add support for bus power domain

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Message-ID: <20211021132329.234942-3-y.oudjana@protonmail.com>
Date:   Thu, 21 Oct 2021 13:24:42 +0000
From:   Yassine Oudjana <y.oudjana@...tonmail.com>
To:     Georgi Djakov <djakov@...nel.org>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Yassine Oudjana <y.oudjana@...tonmail.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Shawn Guo <shawn.guo@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: [PATCH RESEND v5 2/5] interconnect: icc-rpm: Add support for bus power domain

Add support for attaching to a power domain. This is required
for Aggregate 0 NoC on MSM8996, which is powered by a GDSC.

Signed-off-by: Yassine Oudjana <y.oudjana@...tonmail.com>
---
 drivers/interconnect/qcom/icc-rpm.c | 7 +++++++
 drivers/interconnect/qcom/icc-rpm.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c
index ef7999a08c8b..6b918d082ab6 100644
--- a/drivers/interconnect/qcom/icc-rpm.c
+++ b/drivers/interconnect/qcom/icc-rpm.c
@@ -11,6 +11,7 @@
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
+#include <linux/pm_domain.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 
@@ -340,6 +341,12 @@ int qnoc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	if (desc->has_bus_pd) {
+		ret = dev_pm_domain_attach(dev, true);
+		if (ret)
+			return ret;
+	}
+
 	provider = &qp->provider;
 	INIT_LIST_HEAD(&provider->nodes);
 	provider->dev = dev;
diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h
index f5744de4da19..fd06a3b9e3f7 100644
--- a/drivers/interconnect/qcom/icc-rpm.h
+++ b/drivers/interconnect/qcom/icc-rpm.h
@@ -77,6 +77,7 @@ struct qcom_icc_desc {
 	size_t num_nodes;
 	const char * const *clocks;
 	size_t num_clocks;
+	bool has_bus_pd;
 	bool is_bimc_node;
 	const struct regmap_config *regmap_cfg;
 	unsigned int qos_offset;
-- 
2.33.1