From dc77ad4c8727d3a1c23eadcb287501dab480d634 Mon Sep 17 00:00:00 2001 From: Dave Liu Date: Wed, 10 Jun 2009 22:53:37 -0500 Subject: [PATCH] sata_fsl: Add power mgmt support Signed-off-by: Dave Liu Signed-off-by: Liu Yu Signed-off-by: Kumar Gala Signed-off-by: Jeff Garzik --- drivers/ata/sata_fsl.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index 36b8629203be..94eaa432c40a 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -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) -- 2.20.1