dmaengine: mv_xor: add suspend/resume support
This commit adds suspend/resume support to the mv_xor driver. The
config and interrupt mask registers must be saved and restored, and
upon resume, the MBus windows configuration must also be done again.
Tested on Armada 388 GP, with a RAID 5 array, accessed before and
after a suspend to RAM cycle.
Based on work from Ofer Heifetz and Lior Amsalem.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h
index 3438914..c19fe30 100644
--- a/drivers/dma/mv_xor.h
+++ b/drivers/dma/mv_xor.h
@@ -125,6 +125,7 @@
char dummy_src[MV_XOR_MIN_BYTE_COUNT];
char dummy_dst[MV_XOR_MIN_BYTE_COUNT];
dma_addr_t dummy_src_addr, dummy_dst_addr;
+ u32 saved_config_reg, saved_int_mask_reg;
};
/**