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| author | Vincent Wan | 2014-11-05 07:09:14 +0100 |
|---|---|---|
| committer | Ulf Hansson | 2014-11-26 14:30:39 +0100 |
| commit | d44f88da42d2a75eeac02f87455043f44e10d7cc (patch) | |
| tree | bc21e992fe256f32933c59dc73431834c63afcb9 /drivers/mmc/host/sdhci-pci.c | |
| parent | mmc: sdhci: Add a quirk for AMD SDHC transfer mode register need to be cleare... (diff) | |
| download | kernel-qcow2-linux-d44f88da42d2a75eeac02f87455043f44e10d7cc.tar.gz kernel-qcow2-linux-d44f88da42d2a75eeac02f87455043f44e10d7cc.tar.xz kernel-qcow2-linux-d44f88da42d2a75eeac02f87455043f44e10d7cc.zip | |
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 <vincent.wan@amd.com>
Signed-off-by: Wan Zongshun <mcuos.com@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci-pci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-pci.c | 27 |
1 files changed, 26 insertions, 1 deletions
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) }, |