From 7dcbc1f2c89b14745ff13eae3e57b72f05161786 Mon Sep 17 00:00:00 2001 From: "Jakub W. Jozwicki J" Date: Tue, 9 Jan 2007 09:01:19 +0900 Subject: [PATCH] pata_sis: implement laptop list and add ASUS A6K/A6U In ASUS A6K/A6U hdd is connected to SiS 96x via 40c cable, however it is short cable and is UDMA66 capable. tj: fixed if () conditionals ah: fixed infinite loop Signed-off-by: Jakub W. Jozwicki Cc: Andreas Henriksson Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/pata_sis.c | 32 ++++++++++++++++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-) diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c index c434c4ef4e..d9486fcd59 100644 --- a/drivers/ata/pata_sis.c +++ b/drivers/ata/pata_sis.c @@ -43,6 +43,34 @@ struct sis_chipset { up code later */ }; +struct sis_laptop { + u16 device; + u16 subvendor; + u16 subdevice; +}; + +static const struct sis_laptop sis_laptop[] = { + /* devid, subvendor, subdev */ + { 0x5513, 0x1043, 0x1107 }, /* ASUS A6K */ + /* end marker */ + { 0, } +}; + +static int sis_short_ata40(struct pci_dev *dev) +{ + const struct sis_laptop *lap = &sis_laptop[0]; + + while (lap->device) { + if (lap->device == dev->device && + lap->subvendor == dev->subsystem_vendor && + lap->subdevice == dev->subsystem_device) + return 1; + lap++; + } + + return 0; +} + /** * sis_port_base - return PCI configuration base for dev * @adev: device @@ -79,7 +107,7 @@ static int sis_133_pre_reset(struct ata_port *ap) /* The top bit of this register is the cable detect bit */ pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp); - if (tmp & 0x8000) + if ((tmp & 0x8000) && !sis_short_ata40(pdev)) ap->cbl = ATA_CBL_PATA40; else ap->cbl = ATA_CBL_PATA80; @@ -127,7 +155,7 @@ static int sis_66_pre_reset(struct ata_port *ap) /* Older chips keep cable detect in bits 4/5 of reg 0x48 */ pci_read_config_byte(pdev, 0x48, &tmp); tmp >>= ap->port_no; - if (tmp & 0x10) + if ((tmp & 0x10) && !sis_short_ata40(pdev)) ap->cbl = ATA_CBL_PATA40; else ap->cbl = ATA_CBL_PATA80; -- 2.39.5