Add suspend/sleep support.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
drivers/scsi/sata_sil24.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
79fd0e52c2c53999865a61f160919a0a6308dbc8
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index 7726e6e..8c438ba 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -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_p
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_drive
.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 = {
@@ -1179,6 +1183,21 @@ static int sil24_init_one(struct pci_dev
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;
+
+ 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);
+
+ return ata_pci_device_resume(pdev);
+}
+
static int __init sil24_init(void)
{
return pci_module_init(&sil24_pci_driver);
--
1.3.2
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