libata: implement ata_timing_cycle2mode() and use it in libata-acpi and pata_acpi
libata-acpi is using separate timing tables for transfer modes
although libata-core has the complete ata_timing table. Implement
ata_timing_cycle2mode() to look for matching mode given transfer type
and cycle duration and use it in libata-acpi and pata_acpi to replace
private timing tables.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c
index a4737a3..244098a 100644
--- a/drivers/ata/pata_acpi.c
+++ b/drivers/ata/pata_acpi.c
@@ -133,13 +133,14 @@
{
int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
+ const struct ata_timing *t;
if (!(acpi->gtm.flags & 0x10))
unit = 0;
/* Now stuff the nS values into the structure */
- acpi->gtm.drive[unit].pio =
- ata_acpi_pio_cycle[adev->pio_mode - XFER_PIO_0];
+ t = ata_timing_find_mode(adev->pio_mode);
+ acpi->gtm.drive[unit].pio = t->cycle;
ata_acpi_stm(ap, &acpi->gtm);
/* See what mode we actually got */
ata_acpi_gtm(ap, &acpi->gtm);
@@ -155,18 +156,18 @@
{
int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
+ const struct ata_timing *t;
if (!(acpi->gtm.flags & 0x10))
unit = 0;
/* Now stuff the nS values into the structure */
+ t = ata_timing_find_mode(adev->dma_mode);
if (adev->dma_mode >= XFER_UDMA_0) {
- acpi->gtm.drive[unit].dma =
- ata_acpi_udma_cycle[adev->dma_mode - XFER_UDMA_0];
+ acpi->gtm.drive[unit].dma = t->udma;
acpi->gtm.flags |= (1 << (2 * unit));
} else {
- acpi->gtm.drive[unit].dma =
- ata_acpi_mwdma_cycle[adev->dma_mode - XFER_MW_DMA_0];
+ acpi->gtm.drive[unit].dma = t->cycle;
acpi->gtm.flags &= ~(1 << (2 * unit));
}
ata_acpi_stm(ap, &acpi->gtm);