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Commit 45228ef3 authored by Ulf Hansson's avatar Ulf Hansson Committed by Mike Turquette
Browse files

clk: ux500: Initial support for abx500 clock driver 



The abx500 clock driver is a platform driver which will be initialized
during arch init. The platform device shall be added from the ab-core
driver as a mfd child device to maintain correct boot sequence.

Depending on what ab version we use, different clock definitions will
be added.

Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
parent b70e6d00

drivers/clk/ux500/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -10,3 +10,6 @@ obj-y += clk-prcmu.o 
obj-y += u8500_clk.o

obj-y += u9540_clk.o

obj-y += u8540_clk.o



# ABX500 clock driver

obj-y += abx500-clk.o

drivers/clk/ux500/abx500-clk.c

0 → 100644
+73 −0
Original line number Diff line number Diff line 
/*

 * abx500 clock implementation for ux500 platform.

 *

 * Copyright (C) 2012 ST-Ericsson SA

 * Author: Ulf Hansson <ulf.hansson@linaro.org>

 *

 * License terms: GNU General Public License (GPL) version 2

 */



#include <linux/err.h>

#include <linux/module.h>

#include <linux/device.h>

#include <linux/platform_device.h>

#include <linux/mfd/abx500/ab8500.h>



/* TODO: Add clock implementations here */





/* Clock definitions for ab8500 */

static int ab8500_reg_clks(struct device *dev)

{

	return 0;

}



/* Clock definitions for ab8540 */

static int ab8540_reg_clks(struct device *dev)

{

	return 0;

}



/* Clock definitions for ab9540 */

static int ab9540_reg_clks(struct device *dev)

{

	return 0;

}



static int __devinit abx500_clk_probe(struct platform_device *pdev)

{

	struct ab8500 *parent = dev_get_drvdata(pdev->dev.parent);

	int ret;



	if (is_ab8500(parent) || is_ab8505(parent)) {

		ret = ab8500_reg_clks(&pdev->dev);

	} else if (is_ab8540(parent)) {

		ret = ab8540_reg_clks(&pdev->dev);

	} else if (is_ab9540(parent)) {

		ret = ab9540_reg_clks(&pdev->dev);

	} else {

		dev_err(&pdev->dev, "non supported plf id\n");

		return -ENODEV;

	}



	return ret;

}



static struct platform_driver abx500_clk_driver = {

	.driver = {

		.name = "abx500-clk",

		.owner = THIS_MODULE,

	},

	.probe	= abx500_clk_probe,

};



static int __init abx500_clk_init(void)

{

	return platform_driver_register(&abx500_clk_driver);

}



arch_initcall(abx500_clk_init);



MODULE_AUTHOR("Ulf Hansson <ulf.hansson@linaro.org");

MODULE_DESCRIPTION("ABX500 clk driver");

MODULE_LICENSE("GPL v2");