pata_it8213: Cable detect

Another not-quite PIIX, another cable type conversion

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 23 insertions, 13 deletions

diff --git a/drivers/ata/pata_it8213.c b/drivers/ata/pata_it8213.c
index ea734701555e..011306ef8334 100644
--- a/drivers/ata/pata_it8213.c
+++ b/drivers/ata/pata_it8213.c
@@ -25,8 +25,8 @@
  *	it8213_pre_reset	-	check for 40/80 pin
  *	@ap: Port
  *
- *	Perform cable detection for the 8213 ATA interface. This is
- *	different to the PIIX arrangement
+ *	Filter out ports by the enable bits before doing the normal reset
+ *	and probe.
  */
 
 static int it8213_pre_reset(struct ata_port *ap)
@@ -34,23 +34,14 @@ static int it8213_pre_reset(struct ata_port *ap)
 	static const struct pci_bits it8213_enable_bits[] = {
 		{ 0x41U, 1U, 0x80UL, 0x80UL },	/* port 0 */
 	};
-
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
-	u8 tmp;
-
 	if (!pci_test_config_bits(pdev, &it8213_enable_bits[ap->port_no]))
 		return -ENOENT;
-
-	pci_read_config_byte(pdev, 0x42, &tmp);
-	if (tmp & 2)	/* The initial docs are incorrect */
-		ap->cbl = ATA_CBL_PATA40;
-	else
-		ap->cbl = ATA_CBL_PATA80;
 	return ata_std_prereset(ap);
 }
 
 /**
- *	it8213_probe_reset - Probe specified port on PATA host controller
+ *	it8213_error_handler - Probe specified port on PATA host controller
  *	@ap: Port to probe
  *
  *	LOCKING:
@@ -63,9 +54,27 @@ static void it8213_error_handler(struct ata_port *ap)
 }
 
 /**
+ *	it8213_cable_detect	-	check for 40/80 pin
+ *	@ap: Port
+ *
+ *	Perform cable detection for the 8213 ATA interface. This is
+ *	different to the PIIX arrangement
+ */
+
+static int it8213_cable_detect(struct ata_port *ap)
+{
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+	u8 tmp;
+	pci_read_config_byte(pdev, 0x42, &tmp);
+	if (tmp & 2)	/* The initial docs are incorrect */
+		return ATA_CBL_PATA40;
+	return ATA_CBL_PATA80;
+}
+
+/**
  *	it8213_set_piomode - Initialize host controller PATA PIO timings
  *	@ap: Port whose timings we are configuring
- *	@adev: um
+ *	@adev: Device whose timings we are configuring
  *
  *	Set PIO mode for device, in host controller PCI config space.
  *
@@ -268,6 +277,7 @@ static const struct ata_port_operations it8213_ops = {
 	.thaw			= ata_bmdma_thaw,
 	.error_handler		= it8213_error_handler,
 	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
+	.cable_detect		= it8213_cable_detect,
 
 	.bmdma_setup		= ata_bmdma_setup,
 	.bmdma_start		= ata_bmdma_start,