dma40: allow realtime and priority for event lines

[linux-block.git] / arch / arm / plat-nomadik / include / plat / ste_dma40.h

diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
index 74b62f10d07f8addaf0ad6d5ad7c40d5cadfd12f..8358f857a29ed8af5dce82321f66b876921697f9 100644 (file)
--- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h
+++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
@@ -13,6 +13,14 @@
 #include <linux/workqueue.h>
 #include <linux/interrupt.h>
 
+/*
+ * Maxium size for a single dma descriptor
+ * Size is limited to 16 bits.
+ * Size is in the units of addr-widths (1,2,4,8 bytes)
+ * Larger transfers will be split up to multiple linked desc
+ */
+#define STEDMA40_MAX_SEG_SIZE 0xFFFF
+
 /* dev types for memcpy */
 #define STEDMA40_DEV_DST_MEMORY (-1)
 #define        STEDMA40_DEV_SRC_MEMORY (-1)
@@ -96,6 +104,8 @@ struct stedma40_half_channel_info {
  *
  * @dir: MEM 2 MEM, PERIPH 2 MEM , MEM 2 PERIPH, PERIPH 2 PERIPH
  * @high_priority: true if high-priority
+ * @realtime: true if realtime mode is to be enabled.  Only available on DMA40
+ * version 3+, i.e DB8500v2+
  * @mode: channel mode: physical, logical, or operation
  * @mode_opt: options for the chosen channel mode
  * @src_dev_type: Src device type
@@ -111,6 +121,7 @@ struct stedma40_half_channel_info {
 struct stedma40_chan_cfg {
        enum stedma40_xfer_dir                   dir;
        bool                                     high_priority;
+       bool                                     realtime;
        enum stedma40_mode                       mode;
        enum stedma40_mode_opt                   mode_opt;
        int                                      src_dev_type;