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Commit d2298dca authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
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[PATCH] sata_sil24: add suspend/sleep support 



Add suspend/sleep support.

Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 2a41a610

drivers/scsi/sata_sil24.c

+25 −0
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ enum { 
	HOST_CTRL_STOP		= (1 << 18), /* latched PCI STOP */

	HOST_CTRL_DEVSEL	= (1 << 19), /* latched PCI DEVSEL */

	HOST_CTRL_REQ64		= (1 << 20), /* latched PCI REQ64 */

	HOST_CTRL_GLOBAL_RST	= (1 << 31), /* global reset */



	/*

	 * Port registers
@@ -338,6 +339,7 @@ static int sil24_port_start(struct ata_port *ap); 
static void sil24_port_stop(struct ata_port *ap);

static void sil24_host_stop(struct ata_host_set *host_set);

static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);

static int sil24_pci_device_resume(struct pci_dev *pdev);



static const struct pci_device_id sil24_pci_tbl[] = {

	{ 0x1095, 0x3124, PCI_ANY_ID, PCI_ANY_ID, 0, 0, BID_SIL3124 },
@@ -353,6 +355,8 @@ static struct pci_driver sil24_pci_driver = { 
	.id_table		= sil24_pci_tbl,

	.probe			= sil24_init_one,

	.remove			= ata_pci_remove_one, /* safe? */

	.suspend		= ata_pci_device_suspend,

	.resume			= sil24_pci_device_resume,

};



static struct scsi_host_template sil24_sht = {
@@ -372,6 +376,8 @@ static struct scsi_host_template sil24_sht = { 
	.slave_configure	= ata_scsi_slave_config,

	.slave_destroy		= ata_scsi_slave_destroy,

	.bios_param		= ata_std_bios_param,

	.suspend		= ata_scsi_device_suspend,

	.resume			= ata_scsi_device_resume,

};



static const struct ata_port_operations sil24_ops = {
@@ -1179,6 +1185,25 @@ static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	return rc;

}



static int sil24_pci_device_resume(struct pci_dev *pdev)

{

	struct ata_host_set *host_set = dev_get_drvdata(&pdev->dev);

	struct sil24_host_priv *hpriv = host_set->private_data;



	ata_pci_device_do_resume(pdev);



	if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND)

		writel(HOST_CTRL_GLOBAL_RST, hpriv->host_base + HOST_CTRL);



	sil24_init_controller(pdev, host_set->n_ports,

			      host_set->ports[0]->flags,

			      hpriv->host_base, hpriv->port_base);



	ata_host_set_resume(host_set);



	return 0;

}



static int __init sil24_init(void)

{

	return pci_module_init(&sil24_pci_driver);