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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>
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@ -22,10 +22,10 @@
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#include <linux/ata.h>
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#define DRV_NAME "pata_efar"
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#define DRV_VERSION "0.4.3"
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#define DRV_VERSION "0.4.4"
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/**
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* efar_pre_reset - check for 40/80 pin
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* efar_pre_reset - Enable bits
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* @ap: Port
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*
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* Perform cable detection for the EFAR ATA interface. This is
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@ -38,18 +38,11 @@ static int efar_pre_reset(struct ata_port *ap)
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{ 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
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{ 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
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};
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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u8 tmp;
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if (!pci_test_config_bits(pdev, &efar_enable_bits[ap->port_no]))
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return -ENOENT;
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pci_read_config_byte(pdev, 0x47, &tmp);
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if (tmp & (2 >> ap->port_no))
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ap->cbl = ATA_CBL_PATA40;
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else
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ap->cbl = ATA_CBL_PATA80;
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return ata_std_prereset(ap);
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}
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@ -66,6 +59,25 @@ static void efar_error_handler(struct ata_port *ap)
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ata_bmdma_drive_eh(ap, efar_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
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}
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/**
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* efar_cable_detect - check for 40/80 pin
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* @ap: Port
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*
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* Perform cable detection for the EFAR ATA interface. This is
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* different to the PIIX arrangement
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*/
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static int efar_cable_detect(struct ata_port *ap)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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u8 tmp;
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pci_read_config_byte(pdev, 0x47, &tmp);
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if (tmp & (2 >> ap->port_no))
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return ATA_CBL_PATA40;
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return ATA_CBL_PATA80;
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}
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/**
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* efar_set_piomode - Initialize host controller PATA PIO timings
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* @ap: Port whose timings we are configuring
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@ -256,6 +268,7 @@ static const struct ata_port_operations efar_ops = {
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.thaw = ata_bmdma_thaw,
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.error_handler = efar_error_handler,
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.post_internal_cmd = ata_bmdma_post_internal_cmd,
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.cable_detect = efar_cable_detect,
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.bmdma_setup = ata_bmdma_setup,
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.bmdma_start = ata_bmdma_start,
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