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, 11 deletions

diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index a6cf810c4699..427f95b25fde 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -118,23 +118,23 @@ static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed)
         }
 }
 
-static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif)
+static u8 __devinit slc90e66_cable_detect(ide_hwif_t *hwif)
 {
         struct pci_dev *dev = to_pci_dev(hwif->dev);
-        u8 reg47 = 0;
-        u8 mask = hwif->channel ? 0x01 : 0x02;  /* bit0:Primary */
-
-        hwif->set_pio_mode = &slc90e66_set_pio_mode;
-        hwif->set_dma_mode = &slc90e66_set_dma_mode;
+        u8 reg47 = 0, mask = hwif->channel ? 0x01 : 0x02;
 
         pci_read_config_byte(dev, 0x47, &reg47);
 
-        if (hwif->dma_base == 0)
-                return;
+        /* bit[0(1)]: 0:80, 1:40 */
+        return (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
+static void __devinit init_hwif_slc90e66(ide_hwif_t *hwif)
+{
+        hwif->set_pio_mode = &slc90e66_set_pio_mode;
+        hwif->set_dma_mode = &slc90e66_set_dma_mode;
 
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                /* bit[0(1)]: 0:80, 1:40 */
-                hwif->cbl = (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+        hwif->cable_detect = slc90e66_cable_detect;
 }
 
 static const struct ide_port_info slc90e66_chipset __devinitdata = {