1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/css_2401_csi2p_system/host/isys_dma.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/css_2401_csi2p_system/host/isys_dma.c
new file mode 100644
index 0000000..7776722
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/css_2401_csi2p_system/host/isys_dma.c
@@ -0,0 +1,40 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include "isys_dma.h"
+#include "assert_support.h"
+
+#ifndef __INLINE_ISYS2401_DMA__
+/*
+ * Include definitions for isys dma register access functions. isys_dma.h
+ * includes declarations of these functions by including isys_dma_public.h.
+ */
+#include "isys_dma_private.h"
+#endif
+
+const isys2401_dma_channel N_ISYS2401_DMA_CHANNEL_PROCS[N_ISYS2401_DMA_ID] = {
+	N_ISYS2401_DMA_CHANNEL
+};
+
+void isys2401_dma_set_max_burst_size(
+	const isys2401_dma_ID_t	dma_id,
+	uint32_t		max_burst_size)
+{
+	assert(dma_id < N_ISYS2401_DMA_ID);
+	assert((max_burst_size > 0x00) && (max_burst_size <= 0xFF));
+
+	isys2401_dma_reg_store(dma_id,
+		DMA_DEV_INFO_REG_IDX(_DMA_V2_DEV_INTERF_MAX_BURST_IDX, HIVE_DMA_BUS_DDR_CONN),
+		(max_burst_size - 1));
+}