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Commit dc77ad4c authored by Dave Liu's avatar Dave Liu Committed by Jeff Garzik
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sata_fsl: Add power mgmt support

parent 918d7b7c
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+35 −0
Original line number Diff line number Diff line
@@ -1378,6 +1378,37 @@ static int sata_fsl_remove(struct of_device *ofdev)
	return 0;
}

#ifdef CONFIG_PM
static int sata_fsl_suspend(struct of_device *op, pm_message_t state)
{
	struct ata_host *host = dev_get_drvdata(&op->dev);
	return ata_host_suspend(host, state);
}

static int sata_fsl_resume(struct of_device *op)
{
	struct ata_host *host = dev_get_drvdata(&op->dev);
	struct sata_fsl_host_priv *host_priv = host->private_data;
	int ret;
	void __iomem *hcr_base = host_priv->hcr_base;
	struct ata_port *ap = host->ports[0];
	struct sata_fsl_port_priv *pp = ap->private_data;

	ret = sata_fsl_init_controller(host);
	if (ret) {
		dev_printk(KERN_ERR, &op->dev,
			"Error initialize hardware\n");
		return ret;
	}

	/* Recovery the CHBA register in host controller cmd register set */
	iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA);

	ata_host_resume(host);
	return 0;
}
#endif

static struct of_device_id fsl_sata_match[] = {
	{
		.compatible = "fsl,pq-sata",
@@ -1392,6 +1423,10 @@ static struct of_platform_driver fsl_sata_driver = {
	.match_table	= fsl_sata_match,
	.probe		= sata_fsl_probe,
	.remove		= sata_fsl_remove,
#ifdef CONFIG_PM
	.suspend	= sata_fsl_suspend,
	.resume		= sata_fsl_resume,
#endif
};

static int __init sata_fsl_init(void)