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pata_efar: support ->cable_detect 

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
hifive-unleashed-5.1
Alan Cox 2007-03-08 19:33:29 +00:00 committed by Jeff Garzik
parent 847086069c
commit 6bfed3fb03
1 changed files with 22 additions and 9 deletions
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31
drivers/ata/pata_efar.c
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@ -22,10 +22,10 @@
#include <linux/ata.h>
#define DRV_NAME "pata_efar"
#define DRV_VERSION "0.4.3"
#define DRV_VERSION "0.4.4"
/**
* efar_pre_reset - check for 40/80 pin
* efar_pre_reset - Enable bits
* @ap: Port
*
* Perform cable detection for the EFAR ATA interface. This is
@ -38,18 +38,11 @@ static int efar_pre_reset(struct ata_port *ap)
{ 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
{ 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 tmp;
if (!pci_test_config_bits(pdev, &efar_enable_bits[ap->port_no]))
return -ENOENT;
pci_read_config_byte(pdev, 0x47, &tmp);
if (tmp & (2 >> ap->port_no))
ap->cbl = ATA_CBL_PATA40;
else
ap->cbl = ATA_CBL_PATA80;
return ata_std_prereset(ap);
}
@ -66,6 +59,25 @@ static void efar_error_handler(struct ata_port *ap)
ata_bmdma_drive_eh(ap, efar_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
}
/**
* efar_cable_detect - check for 40/80 pin
* @ap: Port
*
* Perform cable detection for the EFAR ATA interface. This is
* different to the PIIX arrangement
*/
static int efar_cable_detect(struct ata_port *ap)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 tmp;
pci_read_config_byte(pdev, 0x47, &tmp);
if (tmp & (2 >> ap->port_no))
return ATA_CBL_PATA40;
return ATA_CBL_PATA80;
}
/**
* efar_set_piomode - Initialize host controller PATA PIO timings
* @ap: Port whose timings we are configuring
@ -256,6 +268,7 @@ static const struct ata_port_operations efar_ops = {
.thaw = ata_bmdma_thaw,
.error_handler = efar_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = efar_cable_detect,
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,