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>

22 files changed, 137 insertions, 150 deletions

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 4c3d2cf3be5b..c25df65b51f8 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1343,6 +1343,11 @@ static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
         /* call chipset specific routine for each enabled port */
         if (d->init_hwif)
                 d->init_hwif(hwif);
+
+        if (hwif->cable_detect && (hwif->ultra_mask & 0x78)) {
+                if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+                        hwif->cbl = hwif->cable_detect(hwif);
+        }
 }
 
 int ide_device_add_all(u8 *idx, const struct ide_port_info *d)
diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 824df78c7012..ca302fcba3ab 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -166,6 +166,16 @@ static unsigned int __devinit init_chipset_aec62xx(struct pci_dev *dev, const ch
         return dev->irq;
 }
 
+static u8 __devinit atp86x_cable_detect(ide_hwif_t *hwif)
+{
+        struct pci_dev *dev = to_pci_dev(hwif->dev);
+        u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
+
+        pci_read_config_byte(dev, 0x49, &ata66);
+
+        return (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
 static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
 {
         struct pci_dev *dev = to_pci_dev(hwif->dev);
@@ -174,21 +184,10 @@ static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
 
         if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
                 hwif->set_dma_mode = &aec6210_set_mode;
-        else
+        else {
                 hwif->set_dma_mode = &aec6260_set_mode;
 
-        if (hwif->dma_base == 0)
-                return;
-
-        if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
-                return;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
-                u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
-
-                pci_read_config_byte(dev, 0x49, &ata66);
-
-                hwif->cbl = (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+                hwif->cable_detect = atp86x_cable_detect;
         }
 }
 
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 130cc6e784e5..91db990ab756 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -666,13 +666,12 @@ static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif)
         hwif->set_dma_mode = &ali_set_dma_mode;
         hwif->udma_filter = &ali_udma_filter;
 
+        hwif->cable_detect = ata66_ali15x3;
+
         if (hwif->dma_base == 0)
                 return;
 
         hwif->dma_setup = &ali15x3_dma_setup;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = ata66_ali15x3(hwif);
 }
 
 /**
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 8c52bc9eaa59..d6d58d217142 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -199,6 +199,14 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev,
         return dev->irq;
 }
 
+static u8 __devinit amd_cable_detect(ide_hwif_t *hwif)
+{
+        if ((amd_80w >> hwif->channel) & 1)
+                return ATA_CBL_PATA80;
+        else
+                return ATA_CBL_PATA40;
+}
+
 static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
 {
         struct pci_dev *dev = to_pci_dev(hwif->dev);
@@ -209,15 +217,7 @@ static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
         hwif->set_pio_mode = &amd_set_pio_mode;
         hwif->set_dma_mode = &amd_set_drive;
 
-        if (!hwif->dma_base)
-                return;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
-                if ((amd_80w >> hwif->channel) & 1)
-                        hwif->cbl = ATA_CBL_PATA80;
-                else
-                        hwif->cbl = ATA_CBL_PATA40;
-        }
+        hwif->cable_detect = amd_cable_detect;
 }
 
 #define IDE_HFLAGS_AMD \
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index 648fdf30cdf4..b84185b4b68f 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -147,11 +147,7 @@ static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
         hwif->set_pio_mode = &atiixp_set_pio_mode;
         hwif->set_dma_mode = &atiixp_set_dma_mode;
 
-        if (!hwif->dma_base)
-                return;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = atiixp_cable_detect(hwif);
+        hwif->cable_detect = atiixp_cable_detect;
 }
 
 static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 04aa9e59670e..181506340d98 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -393,6 +393,8 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
         hwif->set_pio_mode = &cmd64x_set_pio_mode;
         hwif->set_dma_mode = &cmd64x_set_dma_mode;
 
+        hwif->cable_detect = ata66_cmd64x;
+
         if (!hwif->dma_base)
                 return;
 
@@ -411,9 +413,6 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
         if (dev->device == PCI_DEVICE_ID_CMD_646 && dev->revision < 5)
                 hwif->ultra_mask = 0x00;
 
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = ata66_cmd64x(hwif);
-
         switch (dev->device) {
         case PCI_DEVICE_ID_CMD_648:
         case PCI_DEVICE_ID_CMD_649:
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index 50046436a565..d7b5ea992e94 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -179,11 +179,7 @@ static void __devinit init_hwif_cs5535(ide_hwif_t *hwif)
         hwif->set_pio_mode = &cs5535_set_pio_mode;
         hwif->set_dma_mode = &cs5535_set_dma_mode;
 
-        if (hwif->dma_base == 0)
-                return;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = cs5535_cable_detect(hwif);
+        hwif->cable_detect = cs5535_cable_detect;
 }
 
 static const struct ide_port_info cs5535_chipset __devinitdata = {
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 5623cad569da..7a8c8c7a8b96 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1279,12 +1279,55 @@ static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const cha
         return dev->irq;
 }
 
+static u8 __devinit hpt3xx_cable_detect(ide_hwif_t *hwif)
+{
+        struct pci_dev  *dev    = to_pci_dev(hwif->dev);
+        struct hpt_info *info   = pci_get_drvdata(dev);
+        u8 chip_type            = info->chip_type;
+        u8 scr1 = 0, ata66      = hwif->channel ? 0x01 : 0x02;
+
+        /*
+         * The HPT37x uses the CBLID pins as outputs for MA15/MA16
+         * address lines to access an external EEPROM.  To read valid
+         * cable detect state the pins must be enabled as inputs.
+         */
+        if (chip_type == HPT374 && (PCI_FUNC(dev->devfn) & 1)) {
+                /*
+                 * HPT374 PCI function 1
+                 * - set bit 15 of reg 0x52 to enable TCBLID as input
+                 * - set bit 15 of reg 0x56 to enable FCBLID as input
+                 */
+                u8  mcr_addr = hwif->select_data + 2;
+                u16 mcr;
+
+                pci_read_config_word(dev, mcr_addr, &mcr);
+                pci_write_config_word(dev, mcr_addr, (mcr | 0x8000));
+                /* now read cable id register */
+                pci_read_config_byte(dev, 0x5a, &scr1);
+                pci_write_config_word(dev, mcr_addr, mcr);
+        } else if (chip_type >= HPT370) {
+                /*
+                 * HPT370/372 and 374 pcifn 0
+                 * - clear bit 0 of reg 0x5b to enable P/SCBLID as inputs
+                 */
+                u8 scr2 = 0;
+
+                pci_read_config_byte(dev, 0x5b, &scr2);
+                pci_write_config_byte(dev, 0x5b, (scr2 & ~1));
+                /* now read cable id register */
+                pci_read_config_byte(dev, 0x5a, &scr1);
+                pci_write_config_byte(dev, 0x5b,  scr2);
+        } else
+                pci_read_config_byte(dev, 0x5a, &scr1);
+
+        return (scr1 & ata66) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
 static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
 {
         struct pci_dev *dev     = to_pci_dev(hwif->dev);
         struct hpt_info *info   = pci_get_drvdata(dev);
         int serialize           = HPT_SERIALIZE_IO;
-        u8  scr1 = 0, ata66     = hwif->channel ? 0x01 : 0x02;
         u8  chip_type           = info->chip_type;
         u8  new_mcr, old_mcr    = 0;
 
@@ -1301,6 +1344,8 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
         hwif->udma_filter       = &hpt3xx_udma_filter;
         hwif->mdma_filter       = &hpt3xx_mdma_filter;
 
+        hwif->cable_detect      = hpt3xx_cable_detect;
+
         /*
          * HPT3xxN chips have some complications:
          *
@@ -1346,43 +1391,6 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
         if (hwif->dma_base == 0)
                 return;
 
-        /*
-         * The HPT37x uses the CBLID pins as outputs for MA15/MA16
-         * address lines to access an external EEPROM.  To read valid
-         * cable detect state the pins must be enabled as inputs.
-         */
-        if (chip_type == HPT374 && (PCI_FUNC(dev->devfn) & 1)) {
-                /*
-                 * HPT374 PCI function 1
-                 * - set bit 15 of reg 0x52 to enable TCBLID as input
-                 * - set bit 15 of reg 0x56 to enable FCBLID as input
-                 */
-                u8  mcr_addr = hwif->select_data + 2;
-                u16 mcr;
-
-                pci_read_config_word (dev, mcr_addr, &mcr);
-                pci_write_config_word(dev, mcr_addr, (mcr | 0x8000));
-                /* now read cable id register */
-                pci_read_config_byte (dev, 0x5a, &scr1);
-                pci_write_config_word(dev, mcr_addr, mcr);
-        } else if (chip_type >= HPT370) {
-                /*
-                 * HPT370/372 and 374 pcifn 0
-                 * - clear bit 0 of reg 0x5b to enable P/SCBLID as inputs
-                 */
-                u8 scr2 = 0;
-
-                pci_read_config_byte (dev, 0x5b, &scr2);
-                pci_write_config_byte(dev, 0x5b, (scr2 & ~1));
-                /* now read cable id register */
-                pci_read_config_byte (dev, 0x5a, &scr1);
-                pci_write_config_byte(dev, 0x5b,  scr2);
-        } else
-                pci_read_config_byte (dev, 0x5a, &scr1);
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = (scr1 & ata66) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
-
         if (chip_type >= HPT374) {
                 hwif->ide_dma_test_irq  = &hpt374_ide_dma_test_irq;
                 hwif->ide_dma_end       = &hpt374_ide_dma_end;
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;
 }
 
 
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 938d35f35c81..79232c6c1f01 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -579,14 +579,13 @@ static void __devinit init_hwif_it821x(ide_hwif_t *hwif)
         } else
                 hwif->host_flags |= IDE_HFLAG_NO_SET_MODE;
 
+        hwif->cable_detect = ata66_it821x;
+
         if (hwif->dma_base == 0)
                 return;
 
         hwif->ultra_mask = ATA_UDMA6;
         hwif->mwdma_mask = ATA_MWDMA2;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = ata66_it821x(hwif);
 }
 
 static void __devinit it8212_disable_raid(struct pci_dev *dev)
diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c
index 8b40f6479c55..ff53c2df7a13 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -111,11 +111,7 @@ static void __devinit init_hwif_jmicron(ide_hwif_t *hwif)
         hwif->set_pio_mode = &jmicron_set_pio_mode;
         hwif->set_dma_mode = &jmicron_set_dma_mode;
 
-        if (hwif->dma_base == 0)
-                return;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = ata66_jmicron(hwif);
+        hwif->cable_detect = ata66_jmicron;
 }
 
 static const struct ide_port_info jmicron_chipset __devinitdata = {
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index bb29db03540e..b552960dc1c1 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -197,7 +197,7 @@ static void pdcnew_set_pio_mode(ide_drive_t *drive, const u8 pio)
         }
 }
 
-static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
+static u8 __devinit pdcnew_cable_detect(ide_hwif_t *hwif)
 {
         if (get_indexed_reg(hwif, 0x0b) & 0x04)
                 return ATA_CBL_PATA40;
@@ -456,11 +456,7 @@ static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
         hwif->quirkproc = &pdcnew_quirkproc;
         hwif->resetproc = &pdcnew_reset;
 
-        if (hwif->dma_base == 0)
-                return;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = pdcnew_cable_detect(hwif);
+        hwif->cable_detect = pdcnew_cable_detect;
 }
 
 static struct pci_dev * __devinit pdc20270_get_dev2(struct pci_dev *dev)
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index 31a1308414a0..41853a1bc913 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -140,7 +140,7 @@ static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
         pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
 }
 
-static u8 pdc202xx_old_cable_detect (ide_hwif_t *hwif)
+static u8 __devinit pdc2026x_old_cable_detect(ide_hwif_t *hwif)
 {
         struct pci_dev *dev = to_pci_dev(hwif->dev);
         u16 CIS = 0, mask = (hwif->channel) ? (1<<11) : (1<<10);
@@ -311,9 +311,12 @@ static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
 
         hwif->quirkproc = &pdc202xx_quirkproc;
 
-        if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
+        if (dev->device != PCI_DEVICE_ID_PROMISE_20246) {
                 hwif->resetproc = &pdc202xx_reset;
 
+                hwif->cable_detect = pdc2026x_old_cable_detect;
+        }
+
         if (hwif->dma_base == 0)
                 return;
 
@@ -321,9 +324,6 @@ static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
         hwif->dma_timeout = &pdc202xx_dma_timeout;
 
         if (dev->device != PCI_DEVICE_ID_PROMISE_20246) {
-                if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                        hwif->cbl = pdc202xx_old_cable_detect(hwif);
-
                 hwif->dma_start = &pdc202xx_old_ide_dma_start;
                 hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
         } 
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index c1a6b68337d5..039f442c9ea7 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -290,14 +290,11 @@ static void __devinit init_hwif_piix(ide_hwif_t *hwif)
         hwif->set_pio_mode = &piix_set_pio_mode;
         hwif->set_dma_mode = &piix_set_dma_mode;
 
+        hwif->cable_detect = piix_cable_detect;
+
         if (!hwif->dma_base)
                 return;
 
-        if (hwif->ultra_mask & 0x78) {
-                if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                        hwif->cbl = piix_cable_detect(hwif);
-        }
-
         if (no_piix_dma)
                 hwif->ultra_mask = hwif->mwdma_mask = hwif->swdma_mask = 0;
 }
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index dcd44d7c0846..085c1b58a99c 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -683,8 +683,7 @@ static void __devinit init_hwif_scc(ide_hwif_t *hwif)
         else
                 hwif->ultra_mask = ATA_UDMA5; /* 100MHz */
 
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = scc_cable_detect(hwif);
+        hwif->cable_detect = scc_cable_detect;
 }
 
 #define DECLARE_SCC_DEV(name_str)                       \
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index f495253b7d41..d9687a431c5a 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -346,13 +346,8 @@ static void __devinit init_hwif_svwks (ide_hwif_t *hwif)
         hwif->set_dma_mode = &svwks_set_dma_mode;
         hwif->udma_filter = &svwks_udma_filter;
 
-        if (!hwif->dma_base)
-                return;
-
-        if (dev->device != PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
-                if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                        hwif->cbl = ata66_svwks(hwif);
-        }
+        if (dev->device != PCI_DEVICE_ID_SERVERWORKS_OSB4IDE)
+                hwif->cable_detect = ata66_svwks;
 }
 
 #define IDE_HFLAGS_SVWKS \
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 4877bc8cd599..accac8342e17 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -827,15 +827,14 @@ static void __devinit init_hwif_siimage(ide_hwif_t *hwif)
         } else
                 hwif->udma_filter = &sil_pata_udma_filter;
 
+        hwif->cable_detect = ata66_siimage;
+
         if (hwif->dma_base == 0)
                 return;
 
         if (sata)
                 hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
 
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = ata66_siimage(hwif);
-
         if (hwif->mmio) {
                 hwif->ide_dma_test_irq = &siimage_mmio_ide_dma_test_irq;
         } else {
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 2a461de22aa0..cb5c6fc6f3f9 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -565,13 +565,12 @@ static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
         if (chipset_family >= ATA_133)
                 hwif->udma_filter = sis5513_ata133_udma_filter;
 
+        hwif->cable_detect = ata66_sis5513;
+
         if (hwif->dma_base == 0)
                 return;
 
         hwif->ultra_mask = udma_rates[chipset_family];
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = ata66_sis5513(hwif);
 }
 
 static const struct ide_port_info sis5513_chipset __devinitdata = {
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 = {
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c
index 9fbbb4f2dd54..2ef2ed2f2b32 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -160,6 +160,19 @@ static int tc86c001_busproc(ide_drive_t *drive, int state)
         return 0;
 }
 
+static u8 __devinit tc86c001_cable_detect(ide_hwif_t *hwif)
+{
+        struct pci_dev *dev = to_pci_dev(hwif->dev);
+        unsigned long sc_base = pci_resource_start(dev, 5);
+        u16 scr1 = inw(sc_base + 0x00);
+
+        /*
+         * System Control  1 Register bit 13 (PDIAGN):
+         * 0=80-pin cable, 1=40-pin cable
+         */
+        return (scr1 & 0x2000) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
 static void __devinit init_hwif_tc86c001(ide_hwif_t *hwif)
 {
         struct pci_dev *dev     = to_pci_dev(hwif->dev);
@@ -183,6 +196,8 @@ static void __devinit init_hwif_tc86c001(ide_hwif_t *hwif)
 
         hwif->busproc   = &tc86c001_busproc;
 
+        hwif->cable_detect = tc86c001_cable_detect;
+
         if (!hwif->dma_base)
                 return;
 
@@ -196,15 +211,6 @@ static void __devinit init_hwif_tc86c001(ide_hwif_t *hwif)
         hwif->rqsize     = 0xffff;
 
         hwif->dma_start         = &tc86c001_dma_start;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
-                /*
-                 * System Control  1 Register bit 13 (PDIAGN):
-                 * 0=80-pin cable, 1=40-pin cable
-                 */
-                scr1 = inw(sc_base + 0x00);
-                hwif->cbl = (scr1 & 0x2000) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
-        }
 }
 
 static unsigned int __devinit init_chipset_tc86c001(struct pci_dev *dev,
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index 24cb9047fb41..c58a279d6b2f 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -424,11 +424,7 @@ static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
         hwif->set_pio_mode = &via_set_pio_mode;
         hwif->set_dma_mode = &via_set_drive;
 
-        if (!hwif->dma_base)
-                return;
-
-        if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-                hwif->cbl = via82cxxx_cable_detect(hwif);
+        hwif->cable_detect = via82cxxx_cable_detect;
 }
 
 static const struct ide_port_info via82cxxx_chipset __devinitdata = {
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 508f7e435cc4..29e35980d7e3 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -535,6 +535,8 @@ typedef struct hwif_s {
         u8 (*mdma_filter)(ide_drive_t *);
         u8 (*udma_filter)(ide_drive_t *);
 
+        u8 (*cable_detect)(struct hwif_s *);
+
         void (*ata_input_data)(ide_drive_t *, void *, u32);
         void (*ata_output_data)(ide_drive_t *, void *, u32);