ARM: PL08x: introduce 'phychan_hold' to hold on to physical channels

[linux-2.6-microblaze.git] / include / linux / amba / pl08x.h

diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h
index 08a9024..95b76ea 100644 (file)
--- a/include/linux/amba/pl08x.h
+++ b/include/linux/amba/pl08x.h
@@ -151,6 +151,8 @@ enum pl08x_dma_chan_state {
  * struct pl08x_dma_chan - this structure wraps a DMA ENGINE channel
  * @chan: wrappped abstract channel
  * @phychan: the physical channel utilized by this channel, if there is one
+ * @phychan_hold: if non-zero, hold on to the physical channel even if we
+ *  have no pending entries
  * @tasklet: tasklet scheduled by the IRQ to handle actual work etc
  * @name: name of channel
  * @cd: channel platform data
@@ -173,6 +175,7 @@ enum pl08x_dma_chan_state {
 struct pl08x_dma_chan {
        struct dma_chan chan;
        struct pl08x_phy_chan *phychan;
+       int phychan_hold;
        struct tasklet_struct tasklet;
        char *name;
        struct pl08x_channel_data *cd;