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mmc: sdhci-pci: enable the clear transfer mode register quirk for AMD sdhci

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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 <vincent.wan@amd.com>
Signed-off-by: Wan Zongshun <mcuos.com@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Vincent Wan 2014-11-05 14:09:14 +08:00 committed by Ulf Hansson
parent 9b8ffea6ef
commit d44f88da42
1 changed files with 26 additions and 1 deletions
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27
drivers/mmc/host/sdhci-pci.c
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@ -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)
},