spi/pl022: add PrimeCell generic DMA support

[net-next-2.6.git] / include / linux / amba / pl022.h

diff --git a/include/linux/amba/pl022.h b/include/linux/amba/pl022.h
index abf26cc47a2bc19ff0238a71128d2505c9acc156..db6a191ddcf70d0e39a0ad588194536e587f75ca 100644 (file)
--- a/include/linux/amba/pl022.h
+++ b/include/linux/amba/pl022.h
@@ -228,6 +228,7 @@ enum ssp_chip_select {
 };
 
 
+struct dma_chan;
 /**
  * struct pl022_ssp_master - device.platform_data for SPI controller devices.
  * @num_chipselect: chipselects are used to distinguish individual
@@ -235,11 +236,16 @@ enum ssp_chip_select {
  *     each slave has a chipselect signal, but it's common that not
  *     every chipselect is connected to a slave.
  * @enable_dma: if true enables DMA driven transfers.
+ * @dma_rx_param: parameter to locate an RX DMA channel.
+ * @dma_tx_param: parameter to locate a TX DMA channel.
  */
 struct pl022_ssp_controller {
        u16 bus_id;
        u8 num_chipselect;
        u8 enable_dma:1;
+       bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
+       void *dma_rx_param;
+       void *dma_tx_param;
 };
 
 /**