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Commit 16f59d36 authored by Mike Tipton's avatar Mike Tipton Committed by Jagadeesh Kona
Browse files

clk: qcom: Add QCOM_CLK_IS_CRITICAL flag 



Add QCOM_CLK_IS_CRITICAL, which can be used to enable a clock by default
in HW and to skip registering it with the framework.

Change-Id: I803a447fae742ca2e20973046090d2b8331ab598
Signed-off-by: default avatarMike Tipton <mdtipton@codeaurora.org>
parent e92f678e

drivers/clk/qcom/clk-regmap.c

+9 −0
Original line number Diff line number Diff line
@@ -269,6 +269,7 @@ EXPORT_SYMBOL(clk_is_regmap_clk); 
 */

int devm_clk_register_regmap(struct device *dev, struct clk_regmap *rclk)

{

	const struct clk_ops *ops;

	int ret;



	rclk->dev = dev;
@@ -278,6 +279,14 @@ int devm_clk_register_regmap(struct device *dev, struct clk_regmap *rclk) 
	else if (dev && dev->parent)

		rclk->regmap = dev_get_regmap(dev->parent, NULL);



	if (rclk->flags & QCOM_CLK_IS_CRITICAL) {

		ops = rclk->hw.init->ops;

		if (ops && ops->enable)

			ops->enable(&rclk->hw);



		return 0;

	}



	ret = devm_clk_hw_register(dev, &rclk->hw);

	if (!ret)

		list_add(&rclk->list_node, &clk_regmap_list);

drivers/clk/qcom/clk-regmap.h

+2 −0
Original line number Diff line number Diff line
@@ -51,6 +51,8 @@ struct clk_regmap { 
	struct clk_regmap_ops *ops;

	struct list_head list_node;

	struct device *dev;

#define QCOM_CLK_IS_CRITICAL	BIT(0)

	unsigned long flags;

};

#define to_clk_regmap(_hw) container_of(_hw, struct clk_regmap, hw)

drivers/clk/qcom/common.c

+8 −0
Original line number Diff line number Diff line
@@ -329,6 +329,14 @@ int qcom_cc_really_probe(struct platform_device *pdev, 
			return ret;



		clk_hw_populate_clock_opp_table(dev->of_node, &rclks[i]->hw);



		/*

		 * Critical clocks are enabled by devm_clk_register_regmap()

		 * and registration skipped. So remove from rclks so that the

		 * get() callback returns NULL and client requests are stubbed.

		 */

		if (rclks[i]->flags & QCOM_CLK_IS_CRITICAL)

			rclks[i] = NULL;

	}



	ret = devm_of_clk_add_hw_provider(dev, qcom_cc_clk_hw_get, cc);