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Commit b5e97d6e authored by Vincent Wan's avatar Vincent Wan Committed by Ulf Hansson
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mmc: sdhci-pci: Change AMD SDHCI quirk application scope 



Change this quirk to apply to AMD Carrizo platform.

Signed-off-by: default avatarWan ZongShun <Vincent.Wan@amd.com>
Tested-by: default avatarNath, Arindam <Arindam.Nath@amd.com>
Tested-by: default avatarRamesh, Ramya <Ramya.Ramesh@amd.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent bcb29994

drivers/mmc/host/sdhci-pci.c

+24 −1
Original line number Diff line number Diff line
@@ -724,14 +724,37 @@ static const struct sdhci_pci_fixes sdhci_rtsx = { 
	.probe_slot	= rtsx_probe_slot,

};



/*AMD chipset generation*/

enum amd_chipset_gen {

	AMD_CHIPSET_BEFORE_ML,

	AMD_CHIPSET_CZ,

	AMD_CHIPSET_NL,

	AMD_CHIPSET_UNKNOWN,

};



static int amd_probe(struct sdhci_pci_chip *chip)

{

	struct pci_dev	*smbus_dev;

	enum amd_chipset_gen gen;



	smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,

			PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);

	if (smbus_dev) {

		gen = AMD_CHIPSET_BEFORE_ML;

	} else {

		smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,

				PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);

		if (smbus_dev) {

			if (smbus_dev->revision < 0x51)

				gen = AMD_CHIPSET_CZ;

			else

				gen = AMD_CHIPSET_NL;

		} else {

			gen = AMD_CHIPSET_UNKNOWN;

		}

	}



	if (smbus_dev && (smbus_dev->revision < 0x51)) {

	if ((gen == AMD_CHIPSET_BEFORE_ML) || (gen == AMD_CHIPSET_CZ)) {

		chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;

		chip->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;

	}