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mmc: sdhci-pci: add Intel Merrifield support 

Implement initial SDHCI Intel Merrifield support.  This patch is based
on previous one from Yunpeng Gao <yunpeng.gao@intel.com>.

Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
David Cohen 2013-10-01 13:18:15 -07:00 committed by Chris Ball
parent e76b855956
commit 8776a165d1
1 changed files with 30 additions and 0 deletions
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30
drivers/mmc/host/sdhci-pci.c
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@ -37,6 +37,7 @@
#define PCI_DEVICE_ID_INTEL_BYT_SDIO 0x0f15
#define PCI_DEVICE_ID_INTEL_BYT_SD 0x0f16
#define PCI_DEVICE_ID_INTEL_BYT_EMMC2 0x0f50
#define PCI_DEVICE_ID_INTEL_MRFL_MMC 0x1190
/*
* PCI registers
@ -356,6 +357,28 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
.allow_runtime_pm = true,
};
/* Define Host controllers for Intel Merrifield platform */
#define INTEL_MRFL_EMMC_0 0
#define INTEL_MRFL_EMMC_1 1
static int intel_mrfl_mmc_probe_slot(struct sdhci_pci_slot *slot)
{
if ((PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_0) &&
(PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_1))
/* SD support is not ready yet */
return -ENODEV;
slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
MMC_CAP_1_8V_DDR;
return 0;
}
static const struct sdhci_pci_fixes sdhci_intel_mrfl_mmc = {
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
.probe_slot = intel_mrfl_mmc_probe_slot,
};
/* O2Micro extra registers */
#define O2_SD_LOCK_WP 0xD3
#define O2_SD_MULTI_VCC3V 0xEE
@ -939,6 +962,13 @@ static const struct pci_device_id pci_ids[] = {
.driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
},
{
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_MRFL_MMC,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = (kernel_ulong_t)&sdhci_intel_mrfl_mmc,
},
{
.vendor = PCI_VENDOR_ID_O2,
.device = PCI_DEVICE_ID_O2_8120,