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: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com> [Sergei: killed unused variable, changed the order of initializers, modified copyrights, renamed, modified changelog.] Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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@ -2,8 +2,8 @@
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* Renesas R-Car SATA driver
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* Renesas R-Car SATA driver
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*
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*
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* Author: Vladimir Barinov <source@cogentembedded.com>
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* Author: Vladimir Barinov <source@cogentembedded.com>
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* Copyright (C) 2013 Cogent Embedded, Inc.
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* Copyright (C) 2013-2015 Cogent Embedded, Inc.
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* Copyright (C) 2013 Renesas Solutions Corp.
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* Copyright (C) 2013-2015 Renesas Solutions Corp.
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*
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*
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* This program is free software; you can redistribute it and/or modify it
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* under the terms of the GNU General Public License as published by the
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@ -992,9 +992,30 @@ static int sata_rcar_resume(struct device *dev)
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return 0;
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return 0;
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}
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}
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static int sata_rcar_restore(struct device *dev)
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{
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struct ata_host *host = dev_get_drvdata(dev);
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struct sata_rcar_priv *priv = host->private_data;
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clk_prepare_enable(priv->clk);
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sata_rcar_setup_port(host);
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/* initialize host controller */
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sata_rcar_init_controller(host);
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ata_host_resume(host);
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return 0;
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}
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static const struct dev_pm_ops sata_rcar_pm_ops = {
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static const struct dev_pm_ops sata_rcar_pm_ops = {
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.suspend = sata_rcar_suspend,
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.suspend = sata_rcar_suspend,
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.resume = sata_rcar_resume,
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.resume = sata_rcar_resume,
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.freeze = sata_rcar_suspend,
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.thaw = sata_rcar_resume,
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.poweroff = sata_rcar_suspend,
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.restore = sata_rcar_restore,
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};
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};
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#endif
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#endif
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