linux-kernel - [PATCH v3 5/6] soc: qcom: rpmh-rsc: Save base address of drv

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Message-Id: <20221018152837.619426-6-ulf.hansson@linaro.org>
Date:   Tue, 18 Oct 2022 17:28:36 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>
Cc:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Maulik Shah <quic_mkshah@...cinc.com>,
        Rajendra Nayak <quic_rjendra@...cinc.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Amit Pundir <amit.pundir@...aro.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 5/6] soc: qcom: rpmh-rsc: Save base address of drv

From: Maulik Shah <quic_mkshah@...cinc.com>

Add changes to save drv's base address for rsc. This is
used to read drv's configuration such as solver mode is
supported or to write into CONTROL_TCS registers.

Signed-off-by: Maulik Shah <quic_mkshah@...cinc.com>
Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org> # SM8450
---
 drivers/soc/qcom/rpmh-internal.h |  2 ++
 drivers/soc/qcom/rpmh-rsc.c      | 18 ++++++++----------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/soc/qcom/rpmh-internal.h b/drivers/soc/qcom/rpmh-internal.h
index cd3d6ce137e3..7866bb1e5361 100644
--- a/drivers/soc/qcom/rpmh-internal.h
+++ b/drivers/soc/qcom/rpmh-internal.h
@@ -91,6 +91,7 @@ struct rpmh_ctrlr {
  * Resource State Coordinator controller (RSC)
  *
  * @name:               Controller identifier.
+ * @base:               Start address of the DRV registers in this controller.
  * @tcs_base:           Start address of the TCS registers in this controller.
  * @id:                 Instance id in the controller (Direct Resource Voter).
  * @num_tcs:            Number of TCSes in this DRV.
@@ -114,6 +115,7 @@ struct rpmh_ctrlr {
  */
 struct rsc_drv {
 	const char *name;
+	void __iomem *base;
 	void __iomem *tcs_base;
 	int id;
 	int num_tcs;
diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index 050b5f5c9f62..8e01697f59af 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -881,8 +881,7 @@ static int rpmh_rsc_pd_attach(struct rsc_drv *drv, struct device *dev)
 	return ret;
 }
 
-static int rpmh_probe_tcs_config(struct platform_device *pdev,
-				 struct rsc_drv *drv, void __iomem *base)
+static int rpmh_probe_tcs_config(struct platform_device *pdev, struct rsc_drv *drv)
 {
 	struct tcs_type_config {
 		u32 type;
@@ -896,9 +895,9 @@ static int rpmh_probe_tcs_config(struct platform_device *pdev,
 	ret = of_property_read_u32(dn, "qcom,tcs-offset", &offset);
 	if (ret)
 		return ret;
-	drv->tcs_base = base + offset;
+	drv->tcs_base = drv->base + offset;
 
-	config = readl_relaxed(base + DRV_PRNT_CHLD_CONFIG);
+	config = readl_relaxed(drv->base + DRV_PRNT_CHLD_CONFIG);
 
 	max_tcs = config;
 	max_tcs &= DRV_NUM_TCS_MASK << (DRV_NUM_TCS_SHIFT * drv->id);
@@ -960,7 +959,6 @@ static int rpmh_rsc_probe(struct platform_device *pdev)
 	char drv_id[10] = {0};
 	int ret, irq;
 	u32 solver_config;
-	void __iomem *base;
 
 	/*
 	 * Even though RPMh doesn't directly use cmd-db, all of its children
@@ -987,11 +985,11 @@ static int rpmh_rsc_probe(struct platform_device *pdev)
 		drv->name = dev_name(&pdev->dev);
 
 	snprintf(drv_id, ARRAY_SIZE(drv_id), "drv-%d", drv->id);
-	base = devm_platform_ioremap_resource_byname(pdev, drv_id);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
+	drv->base = devm_platform_ioremap_resource_byname(pdev, drv_id);
+	if (IS_ERR(drv->base))
+		return PTR_ERR(drv->base);
 
-	ret = rpmh_probe_tcs_config(pdev, drv, base);
+	ret = rpmh_probe_tcs_config(pdev, drv);
 	if (ret)
 		return ret;
 
@@ -1014,7 +1012,7 @@ static int rpmh_rsc_probe(struct platform_device *pdev)
 	 * 'HW solver' mode where they can be in autonomous mode executing low
 	 * power mode to power down.
 	 */
-	solver_config = readl_relaxed(base + DRV_SOLVER_CONFIG);
+	solver_config = readl_relaxed(drv->base + DRV_SOLVER_CONFIG);
 	solver_config &= DRV_HW_SOLVER_MASK << DRV_HW_SOLVER_SHIFT;
 	solver_config = solver_config >> DRV_HW_SOLVER_SHIFT;
 	if (!solver_config) {
-- 
2.34.1