From d44f88da42d2a75eeac02f87455043f44e10d7cc Mon Sep 17 00:00:00 2001 From: Vincent Wan Date: Wed, 5 Nov 2014 14:09:14 +0800 Subject: mmc: sdhci-pci: enable the clear transfer mode register quirk for AMD sdhci This patch is to enable the quirk for AMD sdhci requiring transfer mode register need to be cleared for commands without data Signed-off-by: Vincent Wan Signed-off-by: Wan Zongshun Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-pci.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index c25639b839cd..5a77f188b503 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -645,6 +645,23 @@ static const struct sdhci_pci_fixes sdhci_rtsx = { .probe_slot = rtsx_probe_slot, }; +static int amd_probe(struct sdhci_pci_chip *chip) +{ + struct pci_dev *smbus_dev; + + smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD, + PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL); + + if (smbus_dev && (smbus_dev->revision < 0x51)) + chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD; + + return 0; +} + +static const struct sdhci_pci_fixes sdhci_amd = { + .probe = amd_probe, +}; + static const struct pci_device_id pci_ids[] = { { .vendor = PCI_VENDOR_ID_RICOH, @@ -1044,7 +1061,15 @@ static const struct pci_device_id pci_ids[] = { .subdevice = PCI_ANY_ID, .driver_data = (kernel_ulong_t)&sdhci_o2, }, - + { + .vendor = PCI_VENDOR_ID_AMD, + .device = PCI_ANY_ID, + .class = PCI_CLASS_SYSTEM_SDHCI << 8, + .class_mask = 0xFFFF00, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_amd, + }, { /* Generic SD host controller */ PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) }, -- cgit