Commit 618aee02 authored by Dong Aisheng's avatar Dong Aisheng Committed by Stephen Boyd
Browse files

clk: add managed version of clk_bulk_get 



This patch introduces the managed version of clk_bulk_get.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Anson Huang <anson.huang@nxp.com>
Cc: Robin Gong <yibin.gong@nxp.com>
Cc: Bai Ping <ping.bai@nxp.com>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: Octavian Purdila <octavian.purdila@nxp.com>
Signed-off-by: default avatarDong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent 266e4e9d

drivers/clk/clk-devres.c

+36 −0
Original line number Diff line number Diff line
@@ -34,6 +34,42 @@ struct clk *devm_clk_get(struct device *dev, const char *id) 
}

EXPORT_SYMBOL(devm_clk_get);



struct clk_bulk_devres {

	struct clk_bulk_data *clks;

	int num_clks;

};



static void devm_clk_bulk_release(struct device *dev, void *res)

{

	struct clk_bulk_devres *devres = res;



	clk_bulk_put(devres->num_clks, devres->clks);

}



int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,

		      struct clk_bulk_data *clks)

{

	struct clk_bulk_devres *devres;

	int ret;



	devres = devres_alloc(devm_clk_bulk_release,

			      sizeof(*devres), GFP_KERNEL);

	if (!devres)

		return -ENOMEM;



	ret = clk_bulk_get(dev, num_clks, clks);

	if (!ret) {

		devres->clks = clks;

		devres->num_clks = num_clks;

		devres_add(dev, devres);

	} else {

		devres_free(devres);

	}



	return ret;

}

EXPORT_SYMBOL_GPL(devm_clk_bulk_get);



static int devm_clk_match(struct device *dev, void *res, void *data)

{

	struct clk **c = res;

include/linux/clk.h

+21 −0
Original line number Diff line number Diff line
@@ -280,6 +280,21 @@ struct clk *clk_get(struct device *dev, const char *id); 
int __must_check clk_bulk_get(struct device *dev, int num_clks,

			      struct clk_bulk_data *clks);



/**

 * devm_clk_bulk_get - managed get multiple clk consumers

 * @dev: device for clock "consumer"

 * @num_clks: the number of clk_bulk_data

 * @clks: the clk_bulk_data table of consumer

 *

 * Return 0 on success, an errno on failure.

 *

 * This helper function allows drivers to get several clk

 * consumers in one operation with management, the clks will

 * automatically be freed when the device is unbound.

 */

int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,

				   struct clk_bulk_data *clks);



/**

 * devm_clk_get - lookup and obtain a managed reference to a clock producer.

 * @dev: device for clock "consumer"
@@ -550,6 +565,12 @@ static inline struct clk *devm_clk_get(struct device *dev, const char *id) 
	return NULL;

}



static inline int devm_clk_bulk_get(struct device *dev, int num_clks,

				    struct clk_bulk_data *clks)

{

	return 0;

}



static inline struct clk *devm_get_clk_from_child(struct device *dev,

				struct device_node *np, const char *con_id)

{

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