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Date:   Thu, 21 Oct 2021 13:19:47 +0000
To:     Georgi Djakov <djakov@kernel.org>, Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Rob Herring <robh+dt@kernel.org>
From:   Yassine Oudjana <y.oudjana@protonmail.com>
Reply-To: Yassine Oudjana <y.oudjana@protonmail.com>
Subject: [PATCH v5 2/5] interconnect: icc-rpm: Add support for bus power domain
Message-ID: <20211021131839.234662-3-y.oudjana@protonmail.com>
In-Reply-To: <20211021131839.234662-1-y.oudjana@protonmail.com>
References: <20211021131839.234662-1-y.oudjana@protonmail.com>
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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@protonmail.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/qco=
m/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>
=20
@@ -340,6 +341,12 @@ int qnoc_probe(struct platform_device *pdev)
 =09if (ret)
 =09=09return ret;
=20
+=09if (desc->has_bus_pd) {
+=09=09ret =3D dev_pm_domain_attach(dev, true);
+=09=09if (ret)
+=09=09=09return ret;
+=09}
+
 =09provider =3D &qp->provider;
 =09INIT_LIST_HEAD(&provider->nodes);
 =09provider->dev =3D dev;
diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qco=
m/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 {
 =09size_t num_nodes;
 =09const char * const *clocks;
 =09size_t num_clocks;
+=09bool has_bus_pd;
 =09bool is_bimc_node;
 =09const struct regmap_config *regmap_cfg;
 =09unsigned int qos_offset;
--=20
2.33.1