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sata_fsl: Add power mgmt support
Signed-off-by: Dave Liu <daveliu@freescale.com> Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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1 changed files with 35 additions and 0 deletions
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@ -1378,6 +1378,37 @@ static int sata_fsl_remove(struct of_device *ofdev)
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return 0;
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return 0;
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}
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}
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#ifdef CONFIG_PM
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static int sata_fsl_suspend(struct of_device *op, pm_message_t state)
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{
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struct ata_host *host = dev_get_drvdata(&op->dev);
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return ata_host_suspend(host, state);
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}
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static int sata_fsl_resume(struct of_device *op)
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{
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struct ata_host *host = dev_get_drvdata(&op->dev);
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struct sata_fsl_host_priv *host_priv = host->private_data;
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int ret;
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void __iomem *hcr_base = host_priv->hcr_base;
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struct ata_port *ap = host->ports[0];
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struct sata_fsl_port_priv *pp = ap->private_data;
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ret = sata_fsl_init_controller(host);
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if (ret) {
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dev_printk(KERN_ERR, &op->dev,
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"Error initialize hardware\n");
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return ret;
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}
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/* Recovery the CHBA register in host controller cmd register set */
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iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA);
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ata_host_resume(host);
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return 0;
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}
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#endif
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static struct of_device_id fsl_sata_match[] = {
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static struct of_device_id fsl_sata_match[] = {
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{
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{
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.compatible = "fsl,pq-sata",
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.compatible = "fsl,pq-sata",
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@ -1392,6 +1423,10 @@ static struct of_platform_driver fsl_sata_driver = {
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.match_table = fsl_sata_match,
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.match_table = fsl_sata_match,
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.probe = sata_fsl_probe,
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.probe = sata_fsl_probe,
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.remove = sata_fsl_remove,
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.remove = sata_fsl_remove,
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#ifdef CONFIG_PM
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.suspend = sata_fsl_suspend,
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.resume = sata_fsl_resume,
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#endif
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};
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};
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static int __init sata_fsl_init(void)
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static int __init sata_fsl_init(void)
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