Blackfin arch: Functional power management support

Enable: PM_SUSPEND_MEM -> Blackfin Hibernate to SDRAM
This feature requires a special bootloader (u-boot)
supporting return from hibernate.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/asm-blackfin/dma.h b/include/asm-blackfin/dma.h
index c0d5259e315b..3cd4b522aa3f 100644
--- a/include/asm-blackfin/dma.h
+++ b/include/asm-blackfin/dma.h
@@ -144,8 +144,16 @@ struct dma_channel {
         void *data;
         unsigned int dma_enable_flag;
         unsigned int loopback_flag;
+#ifdef CONFIG_PM
+        unsigned short saved_peripheral_map;
+#endif
 };
 
+#ifdef CONFIG_PM
+int blackfin_dma_suspend(void);
+void blackfin_dma_resume(void);
+#endif
+
 /*******************************************************************************
 *       DMA API's
 *******************************************************************************/