From 74638c84821c066d02c158bc843c84499ddc9764 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Tue, 31 Mar 2009 20:15:28 +0200 Subject: ide: add support for CFA specified transfer modes (take 3) Add support for the CompactFlash specific PIO modes 5/6 and MWDMA modes 3/4. Since there were no PIO5 capable hard drives produced and one would also need 66 MHz IDE clock to actually get the difference WRT the address setup timings programmed, I decided to simply replace the old non-standard PIO mode 5 timings with the CFA specified ones. Signed-off-by: Sergei Shtylyov Cc: stf_xl@wp.pl Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-dma.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/ide/ide-dma.c') diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index f9c91752f275..a0b8cab1d9a6 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -261,6 +261,14 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base, u8 req_mode) break; case XFER_MW_DMA_0: mask = id[ATA_ID_MWDMA_MODES]; + + /* Also look for the CF specific MWDMA modes... */ + if (ata_id_is_cfa(id) && (id[ATA_ID_CFA_MODES] & 0x38)) { + u8 mode = ((id[ATA_ID_CFA_MODES] & 0x38) >> 3) - 1; + + mask |= ((2 << mode) - 1) << 3; + } + if (port_ops && port_ops->mdma_filter) mask &= port_ops->mdma_filter(drive); else -- cgit v1.2.3