dma: move shdma driver to an own directory

The shdma driver is going to be split into multiple files. To make this more
convenient move it to an own directory.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/drivers/dma/sh/shdma.h b/drivers/dma/sh/shdma.h
new file mode 100644
index 000000000000..0b1d2c105f02
--- /dev/null
+++ b/drivers/dma/sh/shdma.h
@@ -0,0 +1,66 @@
+/*
+ * Renesas SuperH DMA Engine support
+ *
+ * Copyright (C) 2009 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
+ * Copyright (C) 2009 Renesas Solutions, Inc. All rights reserved.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#ifndef __DMA_SHDMA_H
+#define __DMA_SHDMA_H
+
+#include <linux/dmaengine.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+
+#define SH_DMAC_MAX_CHANNELS 20
+#define SH_DMA_SLAVE_NUMBER 256
+#define SH_DMA_TCR_MAX 0x00FFFFFF       /* 16MB */
+
+struct device;
+
+enum dmae_pm_state {
+        DMAE_PM_ESTABLISHED,
+        DMAE_PM_BUSY,
+        DMAE_PM_PENDING,
+};
+
+struct sh_dmae_chan {
+        spinlock_t desc_lock;           /* Descriptor operation lock */
+        struct list_head ld_queue;      /* Link descriptors queue */
+        struct list_head ld_free;       /* Link descriptors free */
+        struct dma_chan common;         /* DMA common channel */
+        struct device *dev;             /* Channel device */
+        struct tasklet_struct tasklet;  /* Tasklet */
+        int descs_allocated;            /* desc count */
+        int xmit_shift;                 /* log_2(bytes_per_xfer) */
+        int irq;
+        int id;                         /* Raw id of this channel */
+        u32 __iomem *base;
+        char dev_id[16];                /* unique name per DMAC of channel */
+        int pm_error;
+        enum dmae_pm_state pm_state;
+};
+
+struct sh_dmae_device {
+        struct dma_device common;
+        struct sh_dmae_chan *chan[SH_DMAC_MAX_CHANNELS];
+        struct sh_dmae_pdata *pdata;
+        struct list_head node;
+        u32 __iomem *chan_reg;
+        u16 __iomem *dmars;
+        unsigned int chcr_offset;
+        u32 chcr_ie_bit;
+};
+
+#define to_sh_chan(chan) container_of(chan, struct sh_dmae_chan, common)
+#define to_sh_desc(lh) container_of(lh, struct sh_desc, node)
+#define tx_to_sh_desc(tx) container_of(tx, struct sh_desc, async_tx)
+#define to_sh_dev(chan) container_of(chan->common.device,\
+                                     struct sh_dmae_device, common)
+
+#endif  /* __DMA_SHDMA_H */