ide: add ->cable_detect method to ide_hwif_t

* Add ->cable_detect method to ide_hwif_t.

* Call the new method in ide_init_port() if:
  - the host supports UDMA modes > UDMA2 ('hwif->ultra_mask & 78')
  - DMA initialization was successful (if hwif->dma_base is not set
    ide_init_port() sets hwif->ultra_mask to zero)
  - "idex=ata66" is not used ('hwif->cbl != ATA_CBL_PATA40_SHORT')

* Convert PCI host drivers to use ->cable_detect method.

While at it:

* Factor out cable detection to separate functions (if not already done).

* hpt366.c/it8213.c/slc90e66.c:
  - don't check cable type if "idex=ata66" is used

* pdc202xx_new.c:
  - add __devinit tag to pdcnew_cable_detect()

* pdc202xx_old.c:
  - rename pdc202xx_old_cable_detect() to pdc2026x_old_cable_detect()
  - add __devinit tag to pdc2026x_old_cable_detect()

Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 11 insertions, 10 deletions

diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index df74e588a530..c781ea6502d6 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -143,6 +143,16 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
 	}
 }
 
+static u8 __devinit it8213_cable_detect(ide_hwif_t *hwif)
+{
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
+	u8 reg42h = 0;
+
+	pci_read_config_byte(dev, 0x42, &reg42h);
+
+	return (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
 /**
  *	init_hwif_it8213	-	set up hwif structs
  *	@hwif: interface to set up
@@ -152,19 +162,10 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
 
 static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
 {
-	struct pci_dev *dev = to_pci_dev(hwif->dev);
-	u8 reg42h = 0;
-
 	hwif->set_dma_mode = &it8213_set_dma_mode;
 	hwif->set_pio_mode = &it8213_set_pio_mode;
 
-	if (!hwif->dma_base)
-		return;
-
-	pci_read_config_byte(dev, 0x42, &reg42h);
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+	hwif->cable_detect = it8213_cable_detect;
 }