From: Adrian Hunter <adrian.hunter@intel.com>
Date: Wed, 29 Jun 2011 11:23:47 +0000 (+0300)
Subject: mmc: sdhci-pci: allow 8-bit bus width for Intel Medfield eMMCs
X-Git-Tag: v3.1-rc1~321^2~38
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=0d013bcf5c272faea1f8e7a5ef3cb2e98103d5cb

mmc: sdhci-pci: allow 8-bit bus width for Intel Medfield eMMCs

Unless MMC_CAP_8_BIT_DATA is set, the bus width defaults to 4.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index e1ae855960b9..26c528648f3c 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -163,6 +163,12 @@ static int mrst_hc_probe(struct sdhci_pci_chip *chip)
 	return 0;
 }
 
+static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
+{
+	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
+	return 0;
+}
+
 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
 	.quirks		= SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
 	.probe_slot	= mrst_hc_probe_slot,
@@ -177,8 +183,13 @@ static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
 };
 
-static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc_sdio = {
+static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
+	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+};
+
+static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+	.probe_slot	= mfd_emmc_probe_slot,
 };
 
 /* O2Micro extra registers */
@@ -689,7 +700,7 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
 		.device		= PCI_DEVICE_ID_INTEL_MFD_SDIO1,
 		.subvendor	= PCI_ANY_ID,
 		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (kernel_ulong_t)&sdhci_intel_mfd_emmc_sdio,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_mfd_sdio,
 	},
 
 	{
@@ -697,7 +708,7 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
 		.device		= PCI_DEVICE_ID_INTEL_MFD_SDIO2,
 		.subvendor	= PCI_ANY_ID,
 		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (kernel_ulong_t)&sdhci_intel_mfd_emmc_sdio,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_mfd_sdio,
 	},
 
 	{
@@ -705,7 +716,7 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
 		.device		= PCI_DEVICE_ID_INTEL_MFD_EMMC0,
 		.subvendor	= PCI_ANY_ID,
 		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (kernel_ulong_t)&sdhci_intel_mfd_emmc_sdio,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_mfd_emmc,
 	},
 
 	{
@@ -713,7 +724,7 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
 		.device		= PCI_DEVICE_ID_INTEL_MFD_EMMC1,
 		.subvendor	= PCI_ANY_ID,
 		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (kernel_ulong_t)&sdhci_intel_mfd_emmc_sdio,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_mfd_emmc,
 	},
 
 	{