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From:   Maulik Shah <mkshah@codeaurora.org>
To:     swboyd@chromium.org, evgreen@chromium.org, dianders@chromium.org,
        bjorn.andersson@linaro.org
Cc:     linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        agross@kernel.org, mka@chromium.org, rnayak@codeaurora.org,
        ilina@codeaurora.org, lsrao@codeaurora.org,
        Maulik Shah <mkshah@codeaurora.org>
Subject: [PATCH v15 4/7] soc: qcom: rpmh-rsc: Save base address of drv
Date:   Tue, 31 Mar 2020 18:49:39 +0530
Message-Id: <1585660782-23416-5-git-send-email-mkshah@codeaurora.org>
In-Reply-To: <1585660782-23416-1-git-send-email-mkshah@codeaurora.org>
References: <1585660782-23416-1-git-send-email-mkshah@codeaurora.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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 drv's registers.

Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
---
 drivers/soc/qcom/rpmh-internal.h |  2 ++
 drivers/soc/qcom/rpmh-rsc.c      | 11 +++++------
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/soc/qcom/rpmh-internal.h b/drivers/soc/qcom/rpmh-internal.h
index 6eec32b..2f7dbba 100644
--- a/drivers/soc/qcom/rpmh-internal.h
+++ b/drivers/soc/qcom/rpmh-internal.h
@@ -85,6 +85,7 @@ struct rpmh_ctrlr {
  * Resource State Coordinator controller (RSC)
  *
  * @name:       controller identifier
+ * @base:       start address of the RSC's DRV registers
  * @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
@@ -95,6 +96,7 @@ 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 b718221..dd35e4d 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -533,21 +533,20 @@ static int rpmh_probe_tcs_config(struct platform_device *pdev,
 	int i, ret, n, st = 0;
 	struct tcs_group *tcs;
 	struct resource *res;
-	void __iomem *base;
 	char drv_id[10] = {0};
 
 	snprintf(drv_id, ARRAY_SIZE(drv_id), "drv-%d", drv->id);
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, drv_id);
-	base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
+	drv->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(drv->base))
+		return PTR_ERR(drv->base);
 
 	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);
-- 
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