dmaengine: shdma: extend .device_terminate_all() to record partial transfer

This patch extends the .device_terminate_all() method of the shdma driver
to return number of bytes transfered in the current descriptor.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/arch/sh/include/asm/dmaengine.h b/arch/sh/include/asm/dmaengine.h
index 9586e4a482b1..bf2f30cf0a27 100644
--- a/arch/sh/include/asm/dmaengine.h
+++ b/arch/sh/include/asm/dmaengine.h
@@ -10,6 +10,9 @@
 #ifndef ASM_DMAENGINE_H
 #define ASM_DMAENGINE_H
 
+#include <linux/dmaengine.h>
+#include <linux/list.h>
+
 #include <asm/dma-register.h>
 
 #define SH_DMAC_MAX_CHANNELS    6
@@ -70,4 +73,21 @@ struct sh_dmae_slave {
         struct sh_dmae_slave_config     *config;  /* Set by the driver */
 };
 
+struct sh_dmae_regs {
+        u32 sar; /* SAR / source address */
+        u32 dar; /* DAR / destination address */
+        u32 tcr; /* TCR / transfer count */
+};
+
+struct sh_desc {
+        struct sh_dmae_regs hw;
+        struct list_head node;
+        struct dma_async_tx_descriptor async_tx;
+        enum dma_data_direction direction;
+        dma_cookie_t cookie;
+        size_t partial;
+        int chunks;
+        int mark;
+};
+
 #endif