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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-07-09 23:17:58 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-07-09 23:17:58 +0200 |
| commit | 49521f97ccd3c2bf6e71a91cea8fe65d170fa4fb (patch) | |
| tree | f61c34da6092f2f1a97a78da567afc59ad40850b /drivers/ide/pci/tc86c001.c | |
| parent | ide: convert ide_find_best_mode() users to use ide_max_dma_mode() (diff) | |
| download | linux-49521f97ccd3c2bf6e71a91cea8fe65d170fa4fb.tar.xz linux-49521f97ccd3c2bf6e71a91cea8fe65d170fa4fb.zip | |
ide: add short cables support
This patch allows users to override both host and device side cable detection
with "ideX=ata66" kernel parameter. Thanks to this it should be now possible
to use UDMA > 2 modes on systems (laptops mainly) which use short 40-pin cable
instead of 80-pin one.
Next patches add automatic detection of some systems using short cables.
Changes:
* Rename hwif->udma_four to hwif->cbl and make it u8.
* Convert all existing users accordingly (use ATA_CBL_* defines while at it).
* Add ATA_CBL_PATA40_SHORT support to ide-iops.c:eighty_ninty_three().
* Use ATA_CBL_PATA40_SHORT for "ideX=ata66" kernel parameter.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Diffstat (limited to 'drivers/ide/pci/tc86c001.c')
| -rw-r--r-- | drivers/ide/pci/tc86c001.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c index cee619bb2eaf..8de1f8e22494 100644 --- a/drivers/ide/pci/tc86c001.c +++ b/drivers/ide/pci/tc86c001.c @@ -220,13 +220,13 @@ static void __devinit init_hwif_tc86c001(ide_hwif_t *hwif) hwif->ide_dma_check = &tc86c001_config_drive_xfer_rate; hwif->dma_start = &tc86c001_dma_start; - if (!hwif->udma_four) { + if (hwif->cbl != ATA_CBL_PATA40_SHORT) { /* * System Control 1 Register bit 13 (PDIAGN): * 0=80-pin cable, 1=40-pin cable */ scr1 = hwif->INW(sc_base + 0x00); - hwif->udma_four = (scr1 & 0x2000) ? 0 : 1; + hwif->cbl = (scr1 & 0x2000) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; } if (!noautodma) |