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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-12-03 20:32:10 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-12-03 16:01:13 -0500 |
| commit | ed869ff0c70d482de0dc97c3138ff42cbf87aed5 (patch) | |
| tree | 700fed51c47eb3dfc8080c42eef50a74db3688b9 | |
| parent | 088ccb53a341b5c0afab67e392b053ebb0bf7b2b (diff) | |
| download | kernel_samsung_smdk4412-ed869ff0c70d482de0dc97c3138ff42cbf87aed5.zip kernel_samsung_smdk4412-ed869ff0c70d482de0dc97c3138ff42cbf87aed5.tar.gz kernel_samsung_smdk4412-ed869ff0c70d482de0dc97c3138ff42cbf87aed5.tar.bz2 | |
pata_it8213: fix PIO2 underclocking
[ port of Sergei's fixes for pata_efar from commit 5f33b3b ]
Fix the PIO mode 2 using mode 0 timings -- this driver should enable the
fast timing bank starting with PIO2, just like the PIIX/ICH drivers do.
Also, fix/rephrase some comments while at it.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| -rw-r--r-- | drivers/ata/pata_it8213.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/ata/pata_it8213.c b/drivers/ata/pata_it8213.c index 092af53..f0bf77a 100644 --- a/drivers/ata/pata_it8213.c +++ b/drivers/ata/pata_it8213.c @@ -92,18 +92,17 @@ static void it8213_set_piomode (struct ata_port *ap, struct ata_device *adev) { 2, 1 }, { 2, 3 }, }; - if (pio > 2) - control |= 1; /* TIME1 enable */ + if (pio > 1) + control |= 1; /* TIME */ if (ata_pio_need_iordy(adev)) /* PIO 3/4 require IORDY */ - control |= 2; /* IORDY enable */ + control |= 2; /* IE */ /* Bit 2 is set for ATAPI on the IT8213 - reverse of ICH/PIIX */ if (adev->class != ATA_DEV_ATA) - control |= 4; + control |= 4; /* PPE */ pci_read_config_word(dev, idetm_port, &idetm_data); - /* Enable PPE, IE and TIME as appropriate */ - + /* Set PPE, IE, and TIME as appropriate */ if (adev->devno == 0) { idetm_data &= 0xCCF0; idetm_data |= control; @@ -122,7 +121,7 @@ static void it8213_set_piomode (struct ata_port *ap, struct ata_device *adev) pci_write_config_byte(dev, 0x44, slave_data); } - idetm_data |= 0x4000; /* Ensure SITRE is enabled */ + idetm_data |= 0x4000; /* Ensure SITRE is set */ pci_write_config_word(dev, idetm_port, idetm_data); } |