[PATCH v1 08/12] fbdev: cyber2000fb: use generic power management

[Vaibhav Gupta]

Drivers using legacy power management .suspen()/.resume() callbacks
have to manage PCI states and device's PM states themselves. They also
need to take care of standard configuration registers.

Switch to generic power management framework using a single
"struct dev_pm_ops" variable to take the unnecessary load from the driver.
This also avoids the need for the driver to directly call most of the PCI
helper functions and device power state control functions, as through
the generic framework PCI Core takes care of the necessary operations,
and drivers are required to do only device-specific jobs.

Signed-off-by: Vaibhav Gupta <vaibhavgupta40 at gmail.com>
---
 drivers/video/fbdev/cyber2000fb.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/video/fbdev/cyber2000fb.c b/drivers/video/fbdev/cyber2000fb.c
index 42d37bed518a..d45355b9a58c 100644
--- a/drivers/video/fbdev/cyber2000fb.c
+++ b/drivers/video/fbdev/cyber2000fb.c
@@ -1810,7 +1810,7 @@ static void cyberpro_pci_remove(struct pci_dev *dev)
 	}
 }
 
-static int cyberpro_pci_suspend(struct pci_dev *dev, pm_message_t state)
+static int __maybe_unused cyberpro_pci_suspend(struct device *dev)
 {
 	return 0;
 }
@@ -1818,9 +1818,9 @@ static int cyberpro_pci_suspend(struct pci_dev *dev, pm_message_t state)
 /*
  * Re-initialise the CyberPro hardware
  */
-static int cyberpro_pci_resume(struct pci_dev *dev)
+static int __maybe_unused cyberpro_pci_resume(struct device *dev)
 {
-	struct cfb_info *cfb = pci_get_drvdata(dev);
+	struct cfb_info *cfb = dev_get_drvdata(dev);
 
 	if (cfb) {
 		cyberpro_pci_enable_mmio(cfb);
@@ -1846,12 +1846,15 @@ static struct pci_device_id cyberpro_pci_table[] = {
 
 MODULE_DEVICE_TABLE(pci, cyberpro_pci_table);
 
+static SIMPLE_DEV_PM_OPS(cyberpro_pci_pm_ops,
+			 cyberpro_pci_suspend,
+			 cyberpro_pci_resume);
+
 static struct pci_driver cyberpro_driver = {
 	.name		= "CyberPro",
 	.probe		= cyberpro_pci_probe,
 	.remove		= cyberpro_pci_remove,
-	.suspend	= cyberpro_pci_suspend,
-	.resume		= cyberpro_pci_resume,
+	.driver.pm	= &cyberpro_pci_pm_ops,
 	.id_table	= cyberpro_pci_table
 };
 
-- 
2.27.0