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| author | Hannes Reinecke <hare@suse.de> | 2007-10-19 10:32:21 +0200 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-10-21 11:10:50 -0500 |
| commit | b5720729f58a4a05b0e2c8c61ac3ed3a3e9f94e5 (patch) | |
| tree | 7f1271417db63a27474d50d3e43e399a5cef4d93 /drivers/scsi/aic7xxx/aic7xxx_osm_pci.c | |
| parent | eb7a1698d24783dd215cb86a12cadebe9b4e7046 (diff) | |
| download | kernel_samsung_tuna-b5720729f58a4a05b0e2c8c61ac3ed3a3e9f94e5.zip kernel_samsung_tuna-b5720729f58a4a05b0e2c8c61ac3ed3a3e9f94e5.tar.gz kernel_samsung_tuna-b5720729f58a4a05b0e2c8c61ac3ed3a3e9f94e5.tar.bz2 | |
[SCSI] aic7xxx: Add suspend/resume support
The aic7xxx driver already contains fragments for suspend/resume
support. So we only need to update them to the current interface
and have full PCI suspend/resume.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Tested-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/aic7xxx/aic7xxx_osm_pci.c')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic7xxx_osm_pci.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c index ea5687d..4488946 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c @@ -49,6 +49,8 @@ static int ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, static int ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc, u_long *bus_addr, uint8_t __iomem **maddr); +static int ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg); +static int ahc_linux_pci_dev_resume(struct pci_dev *pdev); static void ahc_linux_pci_dev_remove(struct pci_dev *pdev); /* Define the macro locally since it's different for different class of chips. @@ -133,10 +135,54 @@ MODULE_DEVICE_TABLE(pci, ahc_linux_pci_id_table); static struct pci_driver aic7xxx_pci_driver = { .name = "aic7xxx", .probe = ahc_linux_pci_dev_probe, +#ifdef CONFIG_PM + .suspend = ahc_linux_pci_dev_suspend, + .resume = ahc_linux_pci_dev_resume, +#endif .remove = ahc_linux_pci_dev_remove, .id_table = ahc_linux_pci_id_table }; +static int +ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg) +{ + struct ahc_softc *ahc = pci_get_drvdata(pdev); + int rc; + + if ((rc = ahc_suspend(ahc))) + return rc; + + pci_save_state(pdev); + pci_disable_device(pdev); + + if (mesg.event == PM_EVENT_SUSPEND) + pci_set_power_state(pdev, PCI_D3hot); + + return rc; +} + +static int +ahc_linux_pci_dev_resume(struct pci_dev *pdev) +{ + struct ahc_softc *ahc = pci_get_drvdata(pdev); + int rc; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + + if ((rc = pci_enable_device(pdev))) { + dev_printk(KERN_ERR, &pdev->dev, + "failed to enable device after resume (%d)\n", rc); + return rc; + } + + pci_set_master(pdev); + + ahc_pci_resume(ahc); + + return (ahc_resume(ahc)); +} + static void ahc_linux_pci_dev_remove(struct pci_dev *pdev) { |