3 files changed, 47 insertions, 1 deletions

diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 65483fdea45b..e0214316aedb 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -17,6 +17,7 @@
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
 #include <linux/slab.h>
+#include <linux/device.h>
 
 #include <linux/mmc/host.h>
 
@@ -84,7 +85,30 @@ static int ricoh_probe(struct sdhci_pci_chip *chip)
         if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
             chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
                 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
+        return 0;
+}
+
+static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
+{
+        slot->host->caps =
+                ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
+                        & SDHCI_TIMEOUT_CLK_MASK) |
+
+                ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
+                        & SDHCI_CLOCK_BASE_MASK) |
 
+                SDHCI_TIMEOUT_CLK_UNIT |
+                SDHCI_CAN_VDD_330 |
+                SDHCI_CAN_DO_SDMA;
+        return 0;
+}
+
+static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
+{
+        /* Apply a delay to allow controller to settle */
+        /* Otherwise it becomes confused if card state changed
+                during suspend */
+        msleep(500);
         return 0;
 }
 
@@ -95,6 +119,15 @@ static const struct sdhci_pci_fixes sdhci_ricoh = {
                           SDHCI_QUIRK_CLOCK_BEFORE_RESET,
 };
 
+static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
+        .probe_slot     = ricoh_mmc_probe_slot,
+        .resume         = ricoh_mmc_resume,
+        .quirks         = SDHCI_QUIRK_32BIT_DMA_ADDR |
+                          SDHCI_QUIRK_CLOCK_BEFORE_RESET |
+                          SDHCI_QUIRK_NO_CARD_NO_RESET |
+                          SDHCI_QUIRK_MISSING_CAPS
+};
+
 static const struct sdhci_pci_fixes sdhci_ene_712 = {
         .quirks         = SDHCI_QUIRK_SINGLE_POWER_WRITE |
                           SDHCI_QUIRK_BROKEN_DMA,
@@ -374,6 +407,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
         },
 
         {
+                .vendor         = PCI_VENDOR_ID_RICOH,
+                .device         = 0x843,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_ricoh_mmc,
+        },
+
+        {
                 .vendor         = PCI_VENDOR_ID_ENE,
                 .device         = PCI_DEVICE_ID_ENE_CB712_SD,
                 .subvendor      = PCI_ANY_ID,
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c6d1bd8d4ac4..483b78eee3ac 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1687,7 +1687,8 @@ int sdhci_add_host(struct sdhci_host *host)
                         host->version);
         }
 
-        caps = sdhci_readl(host, SDHCI_CAPABILITIES);
+        caps = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps :
+                sdhci_readl(host, SDHCI_CAPABILITIES);
 
         if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
                 host->flags |= SDHCI_USE_SDMA;
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index c8468134adc9..b1839a315b86 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -240,6 +240,8 @@ struct sdhci_host {
 #define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN               (1<<25)
 /* Controller cannot support End Attribute in NOP ADMA descriptor */
 #define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC               (1<<26)
+/* Controller is missing device caps. Use caps provided by host */
+#define SDHCI_QUIRK_MISSING_CAPS                        (1<<27)
 
         int                     irq;            /* Device IRQ */
         void __iomem *          ioaddr;         /* Mapped address */
@@ -292,6 +294,8 @@ struct sdhci_host {
 
         struct timer_list       timer;          /* Timer for timeouts */
 
+        unsigned int            caps;           /* Alternative capabilities */
+
         unsigned long           private[0] ____cacheline_aligned;
 };