2 files changed, 23 insertions, 2 deletions

diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 9e7f259346e1..fcbbe71a3cc1 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -43,12 +43,12 @@ struct amba_id {
 
 struct amba_driver {
         struct device_driver    drv;
-        int                     (*probe)(struct amba_device *, struct amba_id *);
+        int                     (*probe)(struct amba_device *, const struct amba_id *);
         int                     (*remove)(struct amba_device *);
         void                    (*shutdown)(struct amba_device *);
         int                     (*suspend)(struct amba_device *, pm_message_t);
         int                     (*resume)(struct amba_device *);
-        struct amba_id          *id_table;
+        const struct amba_id    *id_table;
 };
 
 enum amba_vendor {
@@ -56,6 +56,10 @@ enum amba_vendor {
         AMBA_VENDOR_ST = 0x80,
 };
 
+extern struct bus_type amba_bustype;
+
+#define to_amba_device(d)       container_of(d, struct amba_device, dev)
+
 #define amba_get_drvdata(d)     dev_get_drvdata(&d->dev)
 #define amba_set_drvdata(d,p)   dev_set_drvdata(&d->dev, p)
 
diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h
index f4ee9acc9721..f60227088b7b 100644
--- a/include/linux/amba/mmci.h
+++ b/include/linux/amba/mmci.h
@@ -6,6 +6,9 @@
 
 #include <linux/mmc/host.h>
 
+/* Just some dummy forwarding */
+struct dma_chan;
+
 /**
  * struct mmci_platform_data - platform configuration for the MMCI
  * (also known as PL180) block.
@@ -27,6 +30,17 @@
  * @cd_invert: true if the gpio_cd pin value is active low
  * @capabilities: the capabilities of the block as implemented in
  * this platform, signify anything MMC_CAP_* from mmc/host.h
+ * @dma_filter: function used to select an apropriate RX and TX
+ * DMA channel to be used for DMA, if and only if you're deploying the
+ * generic DMA engine
+ * @dma_rx_param: parameter passed to the DMA allocation
+ * filter in order to select an apropriate RX channel. If
+ * there is a bidirectional RX+TX channel, then just specify
+ * this and leave dma_tx_param set to NULL
+ * @dma_tx_param: parameter passed to the DMA allocation
+ * filter in order to select an apropriate TX channel. If this
+ * is NULL the driver will attempt to use the RX channel as a
+ * bidirectional channel
  */
 struct mmci_platform_data {
         unsigned int f_max;
@@ -38,6 +52,9 @@ struct mmci_platform_data {
         int     gpio_cd;
         bool    cd_invert;
         unsigned long capabilities;
+        bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
+        void *dma_rx_param;
+        void *dma_tx_param;
 };
 
 #endif