linux-kernel - [RFC PATCH 2/4] clk: qcom: Initialize the power domain class for each clock

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Date:   Sat, 21 Jul 2018 23:45:00 +0530
From:   Taniya Das <tdas@...eaurora.org>
To:     Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>
Cc:     Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Amit Nischal <anischal@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        grahamr@....qualcomm.com, Taniya Das <tdas@...eaurora.org>
Subject: [RFC PATCH 2/4] clk: qcom: Initialize the power domain class for each clock

The power domain class is being initialized for clocks which has
an associated power domains before registering the clocks with
the clock framework.

Signed-off-by: Taniya Das <tdas@...eaurora.org>
---
 drivers/clk/qcom/clk-regmap.h |  5 +++++
 drivers/clk/qcom/common.c     | 17 +++++++----------
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/clk/qcom/clk-regmap.h b/drivers/clk/qcom/clk-regmap.h
index 90d95cd..6265d91 100644
--- a/drivers/clk/qcom/clk-regmap.h
+++ b/drivers/clk/qcom/clk-regmap.h
@@ -17,22 +17,27 @@
 #include <linux/clk-provider.h>
 
 struct regmap;
+struct clk_powerdomain_class;
 
 /**
  * struct clk_regmap - regmap supporting clock
  * @hw:		handle between common and hardware-specific interfaces
  * @regmap:	regmap to use for regmap helpers and/or by providers
+ * @pd:		power domain scaling requirement class
  * @enable_reg: register when using regmap enable/disable ops
  * @enable_mask: mask when using regmap enable/disable ops
  * @enable_is_inverted: flag to indicate set enable_mask bits to disable
  *                      when using clock_enable_regmap and friends APIs.
+ * @rate_max:	maximum clock rate in Hz supported at each power domain.
  */
 struct clk_regmap {
 	struct clk_hw hw;
 	struct regmap *regmap;
+	struct clk_powerdomain_class *pd;
 	unsigned int enable_reg;
 	unsigned int enable_mask;
 	bool enable_is_inverted;
+	unsigned long *rate_max;
 };
 #define to_clk_regmap(_hw) container_of(_hw, struct clk_regmap, hw)
 
diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c
index 39ce64c..b0684bf 100644
--- a/drivers/clk/qcom/common.c
+++ b/drivers/clk/qcom/common.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * Copyright (c) 2013-2014, 2018, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/export.h>
@@ -20,6 +12,7 @@
 #include <linux/of.h>
 
 #include "common.h"
+#include "clk-pd.h"
 #include "clk-rcg.h"
 #include "clk-regmap.h"
 #include "reset.h"
@@ -263,6 +256,10 @@ int qcom_cc_really_probe(struct platform_device *pdev,
 		if (!rclks[i])
 			continue;
 
+		ret = clk_power_domain_class_init(dev, rclks[i]->pd);
+		if (ret)
+			return ret;
+
 		ret = devm_clk_register_regmap(dev, rclks[i]);
 		if (ret)
 			return ret;
-- 
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