Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / sudmac.h

diff --git a/kernel/include/linux/sudmac.h b/kernel/include/linux/sudmac.h
new file mode 100644 (file)
index 0000000..377b8a5
--- /dev/null
+++ b/kernel/include/linux/sudmac.h
@@ -0,0 +1,52 @@
+/*
+ * Header for the SUDMAC driver
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ */
+#ifndef SUDMAC_H
+#define SUDMAC_H
+
+#include <linux/dmaengine.h>
+#include <linux/shdma-base.h>
+#include <linux/types.h>
+
+/* Used by slave DMA clients to request DMA to/from a specific peripheral */
+struct sudmac_slave {
+       struct shdma_slave      shdma_slave;    /* Set by the platform */
+};
+
+/*
+ * Supplied by platforms to specify, how a DMA channel has to be configured for
+ * a certain peripheral
+ */
+struct sudmac_slave_config {
+       int             slave_id;
+};
+
+struct sudmac_channel {
+       unsigned long   offset;
+       unsigned long   config;
+       unsigned long   wait;           /* The configuable range is 0 to 3 */
+       unsigned long   dint_end_bit;
+};
+
+struct sudmac_pdata {
+       const struct sudmac_slave_config *slave;
+       int slave_num;
+       const struct sudmac_channel *channel;
+       int channel_num;
+};
+
+/* Definitions for the sudmac_channel.config */
+#define SUDMAC_TX_BUFFER_MODE  BIT(0)
+#define SUDMAC_RX_END_MODE     BIT(1)
+
+/* Definitions for the sudmac_channel.dint_end_bit */
+#define SUDMAC_DMA_BIT_CH0     BIT(0)
+#define SUDMAC_DMA_BIT_CH1     BIT(1)
+
+#endif