Blackfin arch: move include/asm-blackfin header files to arch/blackfin

Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h
new file mode 100644
index 000000000000..6509733bb0f6
--- /dev/null
+++ b/arch/blackfin/include/asm/dma.h
@@ -0,0 +1,205 @@
+/*
+ * File:         include/asm-blackfin/simple_bf533_dma.h
+ * Based on:     none - original work
+ * Author:       LG Soft India
+ *               Copyright (C) 2004-2005 Analog Devices Inc.
+ * Created:      Tue Sep 21 2004
+ * Description:  This file contains the major Data structures and constants
+ * 		 used for DMA Implementation in BF533
+ * Modified:
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program 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, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.
+ * If not, write to the Free Software Foundation,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _BLACKFIN_DMA_H_
+#define _BLACKFIN_DMA_H_
+
+#include <asm/io.h>
+#include <linux/slab.h>
+#include <asm/irq.h>
+#include <asm/signal.h>
+
+#include <linux/kernel.h>
+#include <mach/dma.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <asm/blackfin.h>
+
+#define MAX_DMA_ADDRESS PAGE_OFFSET
+
+/*****************************************************************************
+*        Generic DMA  Declarations
+*
+****************************************************************************/
+enum dma_chan_status {
+	DMA_CHANNEL_FREE,
+	DMA_CHANNEL_REQUESTED,
+	DMA_CHANNEL_ENABLED,
+};
+
+/*-------------------------
+ * config reg bits value
+ *-------------------------*/
+#define DATA_SIZE_8 		0
+#define DATA_SIZE_16 		1
+#define DATA_SIZE_32 		2
+
+#define DMA_FLOW_STOP 		0
+#define DMA_FLOW_AUTO 		1
+#define DMA_FLOW_ARRAY 		4
+#define DMA_FLOW_SMALL 		6
+#define DMA_FLOW_LARGE 		7
+
+#define DIMENSION_LINEAR    0
+#define DIMENSION_2D           1
+
+#define DIR_READ     0
+#define DIR_WRITE    1
+
+#define INTR_DISABLE   0
+#define INTR_ON_BUF    2
+#define INTR_ON_ROW    3
+
+#define DMA_NOSYNC_KEEP_DMA_BUF	0
+#define DMA_SYNC_RESTART	1
+
+struct dmasg {
+	unsigned long next_desc_addr;
+	unsigned long start_addr;
+	unsigned short cfg;
+	unsigned short x_count;
+	short x_modify;
+	unsigned short y_count;
+	short y_modify;
+} __attribute__((packed));
+
+struct dma_register {
+	unsigned long next_desc_ptr;	/* DMA Next Descriptor Pointer register */
+	unsigned long start_addr;	/* DMA Start address  register */
+
+	unsigned short cfg;	/* DMA Configuration register */
+	unsigned short dummy1;	/* DMA Configuration register */
+
+	unsigned long reserved;
+
+	unsigned short x_count;	/* DMA x_count register */
+	unsigned short dummy2;
+
+	short x_modify;	/* DMA x_modify register */
+	unsigned short dummy3;
+
+	unsigned short y_count;	/* DMA y_count register */
+	unsigned short dummy4;
+
+	short y_modify;	/* DMA y_modify register */
+	unsigned short dummy5;
+
+	unsigned long curr_desc_ptr;	/* DMA Current Descriptor Pointer
+					   register */
+	unsigned long curr_addr_ptr;	/* DMA Current Address Pointer
+						   register */
+	unsigned short irq_status;	/* DMA irq status register */
+	unsigned short dummy6;
+
+	unsigned short peripheral_map;	/* DMA peripheral map register */
+	unsigned short dummy7;
+
+	unsigned short curr_x_count;	/* DMA Current x-count register */
+	unsigned short dummy8;
+
+	unsigned long reserved2;
+
+	unsigned short curr_y_count;	/* DMA Current y-count register */
+	unsigned short dummy9;
+
+	unsigned long reserved3;
+
+};
+
+typedef irqreturn_t(*dma_interrupt_t) (int irq, void *dev_id);
+
+struct dma_channel {
+	struct mutex dmalock;
+	char *device_id;
+	enum dma_chan_status chan_status;
+	struct dma_register *regs;
+	struct dmasg *sg;		/* large mode descriptor */
+	unsigned int ctrl_num;	/* controller number */
+	dma_interrupt_t irq_callback;
+	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
+*******************************************************************************/
+/* functions to set register mode */
+void set_dma_start_addr(unsigned int channel, unsigned long addr);
+void set_dma_next_desc_addr(unsigned int channel, unsigned long addr);
+void set_dma_curr_desc_addr(unsigned int channel, unsigned long addr);
+void set_dma_x_count(unsigned int channel, unsigned short x_count);
+void set_dma_x_modify(unsigned int channel, short x_modify);
+void set_dma_y_count(unsigned int channel, unsigned short y_count);
+void set_dma_y_modify(unsigned int channel, short y_modify);
+void set_dma_config(unsigned int channel, unsigned short config);
+unsigned short set_bfin_dma_config(char direction, char flow_mode,
+				   char intr_mode, char dma_mode, char width,
+				   char syncmode);
+void set_dma_curr_addr(unsigned int channel, unsigned long addr);
+
+/* get curr status for polling */
+unsigned short get_dma_curr_irqstat(unsigned int channel);
+unsigned short get_dma_curr_xcount(unsigned int channel);
+unsigned short get_dma_curr_ycount(unsigned int channel);
+unsigned long get_dma_next_desc_ptr(unsigned int channel);
+unsigned long get_dma_curr_desc_ptr(unsigned int channel);
+unsigned long get_dma_curr_addr(unsigned int channel);
+
+/* set large DMA mode descriptor */
+void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg);
+
+/* check if current channel is in use */
+int dma_channel_active(unsigned int channel);
+
+/* common functions must be called in any mode */
+void free_dma(unsigned int channel);
+int dma_channel_active(unsigned int channel); /* check if a channel is in use */
+void disable_dma(unsigned int channel);
+void enable_dma(unsigned int channel);
+int request_dma(unsigned int channel, char *device_id);
+int set_dma_callback(unsigned int channel, dma_interrupt_t callback,
+		     void *data);
+void dma_disable_irq(unsigned int channel);
+void dma_enable_irq(unsigned int channel);
+void clear_dma_irqstat(unsigned int channel);
+void *dma_memcpy(void *dest, const void *src, size_t count);
+void *safe_dma_memcpy(void *dest, const void *src, size_t count);
+
+extern int channel2irq(unsigned int channel);
+extern struct dma_register *dma_io_base_addr[MAX_BLACKFIN_DMA_CHANNEL];
+
+#endif