Commit 8776a165 authored by David Cohen's avatar David Cohen Committed by Chris Ball
Browse files

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: default avatarDavid Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent e76b8559

drivers/mmc/host/sdhci-pci.c

+30 −0
Original line number Diff line number Diff line
@@ -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,