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Subject[PATCH v2] mmc: sdhci-pci: allow 8-bit bus width for Intel PCH
Date
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
---
Changes in v2:
* moved PCI device ID definition to sdhci-pci.c. Thanks Greg for the hint

drivers/mmc/host/sdhci-pci.c | 33 +++++++++++++++++++++++++++++++++
1 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 9382f27..c9db8f8 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -29,6 +29,12 @@
#include "sdhci.h"

/*
+ * PCI device IDs
+ */
+#define PCI_DEVICE_ID_INTEL_PCH_SDIO0 0x8809
+#define PCI_DEVICE_ID_INTEL_PCH_SDIO1 0x880a
+
+/*
* PCI registers
*/

@@ -172,6 +178,12 @@ static int mrst_hc_probe(struct sdhci_pci_chip *chip)
return 0;
}

+static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
+{
+ slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
+ return 0;
+}
+
#ifdef CONFIG_PM_RUNTIME

static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
@@ -281,6 +293,11 @@ static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
.probe_slot = mfd_emmc_probe_slot,
};

+static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
+ .quirks = SDHCI_QUIRK_BROKEN_ADMA,
+ .probe_slot = pch_hc_probe_slot,
+};
+
/* O2Micro extra registers */
#define O2_SD_LOCK_WP 0xD3
#define O2_SD_MULTI_VCC3V 0xEE
@@ -817,6 +834,22 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
},

{
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
+ },
+
+ {
.vendor = PCI_VENDOR_ID_O2,
.device = PCI_DEVICE_ID_O2_8120,
.subvendor = PCI_ANY_ID,
--
1.7.3.4


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