mmc: prepare tmio_mmc for passing of DMA configuration from the MFD cell

After this patch, if the "dma" pointer in struct tmio_mmc_data is not NULL, it
points to a struct, containing two tokens, that have to be passed to the
dmaengine driver for channel configuration.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index c3f7dff..360fc95 100644 (file)
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -55,12 +55,18 @@ int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
 void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state);
 void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state);
 
+struct tmio_mmc_dma {
+       void *chan_priv_tx;
+       void *chan_priv_rx;
+};
+
 /*
  * data for the MMC controller
  */
 struct tmio_mmc_data {
        unsigned int                    hclk;
        unsigned long                   capabilities;
+       struct tmio_mmc_dma             *dma;
        void (*set_pwr)(struct platform_device *host, int state);
        void (*set_clk_div)(struct platform_device *host, int state);
 };