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Date: Thu, 16 Oct 2008 21:27:39 +0200
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To: linux-ide@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, bumble.bee@...all.nl,
Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: [PATCH] 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@...all.nl
Cc: Alan Cox <alan@...rguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
drivers/ide/pci/delkin_cb.c | 63 +++++++++++++++++++++++++++++++++++++++-----
1 file changed, 56 insertions(+), 7 deletions(-)
Index: b/drivers/ide/pci/delkin_cb.c
===================================================================
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/pci/delkin_cb.c
@@ -46,10 +46,27 @@ static const struct ide_port_ops delkin_
.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, co
{
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, co
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_d
.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)
--
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