Commit 5bc27ef7 authored by Mikhail Ulyanov's avatar Mikhail Ulyanov Committed by Tejun Heo
Browse files

sata_rcar: extend PM methods 



In order to make it possible to restore from hibernation not only in Linux but
also in e.g. U-Boot, we have to extend  sata_rcar_{suspend|resume}() to {freeze|
thaw}() PM  methods and implement  the  restore() PM method.

Signed-off-by: default avatarMikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
[Sergei: killed unused variable, changed the order of initializers, modified
copyrights, renamed, modified changelog.]
Signed-off-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 2de5a9c0

drivers/ata/sata_rcar.c

+23 −2
Original line number Diff line number Diff line
@@ -2,8 +2,8 @@ 
 * Renesas R-Car SATA driver

 *

 * Author: Vladimir Barinov <source@cogentembedded.com>

 * Copyright (C) 2013 Cogent Embedded, Inc.

 * Copyright (C) 2013 Renesas Solutions Corp.

 * Copyright (C) 2013-2015 Cogent Embedded, Inc.

 * Copyright (C) 2013-2015 Renesas Solutions Corp.

 *

 * This program is free software; you can redistribute  it and/or modify it

 * under  the terms of  the GNU General  Public License as published by the
@@ -992,9 +992,30 @@ static int sata_rcar_resume(struct device *dev) 
	return 0;

}



static int sata_rcar_restore(struct device *dev)

{

	struct ata_host *host = dev_get_drvdata(dev);

	struct sata_rcar_priv *priv = host->private_data;



	clk_prepare_enable(priv->clk);



	sata_rcar_setup_port(host);



	/* initialize host controller */

	sata_rcar_init_controller(host);



	ata_host_resume(host);



	return 0;

}



static const struct dev_pm_ops sata_rcar_pm_ops = {

	.suspend	= sata_rcar_suspend,

	.resume		= sata_rcar_resume,

	.freeze		= sata_rcar_suspend,

	.thaw		= sata_rcar_resume,

	.poweroff	= sata_rcar_suspend,

	.restore	= sata_rcar_restore,

};

#endif

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