spi/dw_spi: add DMA support

[pandora-kernel.git] / include / linux / spi / dw_spi.h

diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h
index c91302f..6cd10f6 100644 (file)
--- a/include/linux/spi/dw_spi.h
+++ b/include/linux/spi/dw_spi.h
@@ -1,5 +1,6 @@
 #ifndef DW_SPI_HEADER_H
 #define DW_SPI_HEADER_H
+
 #include <linux/io.h>
 
 /* Bit fields in CTRLR0 */
@@ -82,6 +83,13 @@ struct dw_spi_reg {
                                though only low 16 bits matters */
 } __packed;
 
+struct dw_spi;
+struct dw_spi_dma_ops {
+       int (*dma_init)(struct dw_spi *dws);
+       void (*dma_exit)(struct dw_spi *dws);
+       int (*dma_transfer)(struct dw_spi *dws, int cs_change);
+};
+
 struct dw_spi {
        struct spi_master       *master;
        struct spi_device       *cur_dev;
@@ -136,13 +144,15 @@ struct dw_spi {
        /* Dma info */
        int                     dma_inited;
        struct dma_chan         *txchan;
+       struct scatterlist      tx_sgl;
        struct dma_chan         *rxchan;
-       int                     txdma_done;
-       int                     rxdma_done;
-       u64                     tx_param;
-       u64                     rx_param;
+       struct scatterlist      rx_sgl;
+       int                     dma_chan_done;
        struct device           *dma_dev;
-       dma_addr_t              dma_addr;
+       dma_addr_t              dma_addr; /* phy address of the Data register */
+       struct dw_spi_dma_ops   *dma_ops;
+       void                    *dma_priv; /* platform relate info */
+       struct pci_dev          *dmac;
 
        /* Bus interface info */
        void                    *priv;
@@ -216,4 +226,8 @@ extern int dw_spi_add_host(struct dw_spi *dws);
 extern void dw_spi_remove_host(struct dw_spi *dws);
 extern int dw_spi_suspend_host(struct dw_spi *dws);
 extern int dw_spi_resume_host(struct dw_spi *dws);
+extern void dw_spi_xfer_done(struct dw_spi *dws);
+
+/* platform related setup */
+extern int dw_spi_mid_init(struct dw_spi *dws); /* Intel MID platforms */
 #endif /* DW_SPI_HEADER_H */