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delkin_cb: add PM support 

* Factor out chipset initialization code from delkin_cb_probe()
  to delkin_cb_init_chipset().

* Assign ->init_chipset in struct delkin_cb_port_info.

* Add delkin_cb_{suspend,resume}() (->suspend/->resume methods).

Fixes kernel bugzilla bug #11735:

http://bugzilla.kernel.org/show_bug.cgi?id=11735

Tested-by: bumble.bee@xs4all.nl
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
hifive-unleashed-5.1
Bartlomiej Zolnierkiewicz 2008-10-17 18:09:16 +02:00
parent 41d1a3d31d
commit 8c061a40c2
1 changed files with 56 additions and 7 deletions
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63
drivers/ide/pci/delkin_cb.c
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@ -46,10 +46,27 @@ static const struct ide_port_ops delkin_cb_port_ops = {
.quirkproc = ide_undecoded_slave,
};
static unsigned int delkin_cb_init_chipset(struct pci_dev *dev)
{
unsigned long base = pci_resource_start(dev, 0);
int i;
outb(0x02, base + 0x1e); /* set nIEN to block interrupts */
inb(base + 0x17); /* read status to clear interrupts */
for (i = 0; i < sizeof(setup); ++i) {
if (setup[i])
outb(setup[i], base + i);
}
return 0;
}
static const struct ide_port_info delkin_cb_port_info = {
.port_ops = &delkin_cb_port_ops,
.host_flags = IDE_HFLAG_IO_32BIT | IDE_HFLAG_UNMASK_IRQS |
IDE_HFLAG_NO_DMA,
.init_chipset = delkin_cb_init_chipset,
};
static int __devinit
@ -57,7 +74,7 @@ delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
{
struct ide_host *host;
unsigned long base;
int i, rc;
int rc;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
rc = pci_enable_device(dev);
@ -72,12 +89,8 @@ delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
return rc;
}
base = pci_resource_start(dev, 0);
outb(0x02, base + 0x1e); /* set nIEN to block interrupts */
inb(base + 0x17); /* read status to clear interrupts */
for (i = 0; i < sizeof(setup); ++i) {
if (setup[i])
outb(setup[i], base + i);
}
delkin_cb_init_chipset(dev);
memset(&hw, 0, sizeof(hw));
ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
@ -110,6 +123,40 @@ delkin_cb_remove (struct pci_dev *dev)
pci_disable_device(dev);
}
#ifdef CONFIG_PM
static int delkin_cb_suspend(struct pci_dev *dev, pm_message_t state)
{
pci_save_state(dev);
pci_disable_device(dev);
pci_set_power_state(dev, pci_choose_state(dev, state));
return 0;
}
static int delkin_cb_resume(struct pci_dev *dev)
{
struct ide_host *host = pci_get_drvdata(dev);
int rc;
pci_set_power_state(dev, PCI_D0);
rc = pci_enable_device(dev);
if (rc)
return rc;
pci_restore_state(dev);
pci_set_master(dev);
if (host->init_chipset)
host->init_chipset(dev);
return 0;
}
#else
#define delkin_cb_suspend NULL
#define delkin_cb_resume NULL
#endif
static struct pci_device_id delkin_cb_pci_tbl[] __devinitdata = {
{ 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
@ -122,6 +169,8 @@ static struct pci_driver delkin_cb_pci_driver = {
.id_table = delkin_cb_pci_tbl,
.probe = delkin_cb_probe,
.remove = delkin_cb_remove,
.suspend = delkin_cb_suspend,
.resume = delkin_cb_resume,
};
static int __init delkin_cb_init(void)