drivers/media/platform/ti-vpe/vpdma.h - arm/linux - Git at Google

 /*
  * Copyright (c) 2013 Texas Instruments Inc.
  *
  * David Griego, <dagriego@biglakesoftware.com>
  * Dale Farnsworth, <dale@farnsworth.org>
  * Archit Taneja, <archit@ti.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published by
  * the Free Software Foundation.
  */

 #ifndef __TI_VPDMA_H_
 #define __TI_VPDMA_H_

 #define VPDMA_MAX_NUM_LIST		8
 /*
  * A vpdma_buf tracks the size, DMA address and mapping status of each
  * driver DMA area.
  */
 struct vpdma_buf {
 	void			*addr;
 	dma_addr_t		dma_addr;
 	size_t			size;
 	bool			mapped;
 };

 struct vpdma_desc_list {
 	struct vpdma_buf buf;
 	void *next;
 	int type;
 };

 struct vpdma_data {
 	void __iomem		*base;

 	struct platform_device	*pdev;

 	spinlock_t		lock;
 	bool			hwlist_used[VPDMA_MAX_NUM_LIST];
 	void			*hwlist_priv[VPDMA_MAX_NUM_LIST];
 	/* callback to VPE driver when the firmware is loaded */
 	void (*cb)(struct platform_device *pdev);
 };

 enum vpdma_data_format_type {
 	VPDMA_DATA_FMT_TYPE_YUV,
 	VPDMA_DATA_FMT_TYPE_RGB,
 	VPDMA_DATA_FMT_TYPE_MISC,
 };

 struct vpdma_data_format {
 	enum vpdma_data_format_type type;
 	int data_type;
 	u8 depth;
 };

 #define VPDMA_DESC_ALIGN		16	/* 16-byte descriptor alignment */
 #define VPDMA_STRIDE_ALIGN		16	/*
 						 * line stride of source and dest
 						 * buffers should be 16 byte aligned
 						 */
 #define VPDMA_DTD_DESC_SIZE		32	/* 8 words */
 #define VPDMA_CFD_CTD_DESC_SIZE		16	/* 4 words */

 #define VPDMA_LIST_TYPE_NORMAL		0
 #define VPDMA_LIST_TYPE_SELF_MODIFYING	1
 #define VPDMA_LIST_TYPE_DOORBELL	2

 enum vpdma_yuv_formats {
 	VPDMA_DATA_FMT_Y444 = 0,
 	VPDMA_DATA_FMT_Y422,
 	VPDMA_DATA_FMT_Y420,
 	VPDMA_DATA_FMT_C444,
 	VPDMA_DATA_FMT_C422,
 	VPDMA_DATA_FMT_C420,
 	VPDMA_DATA_FMT_YCR422,
 	VPDMA_DATA_FMT_YC444,
 	VPDMA_DATA_FMT_CRY422,
 	VPDMA_DATA_FMT_CBY422,
 	VPDMA_DATA_FMT_YCB422,
 };

 enum vpdma_rgb_formats {
 	VPDMA_DATA_FMT_RGB565 = 0,
 	VPDMA_DATA_FMT_ARGB16_1555,
 	VPDMA_DATA_FMT_ARGB16,
 	VPDMA_DATA_FMT_RGBA16_5551,
 	VPDMA_DATA_FMT_RGBA16,
 	VPDMA_DATA_FMT_ARGB24,
 	VPDMA_DATA_FMT_RGB24,
 	VPDMA_DATA_FMT_ARGB32,
 	VPDMA_DATA_FMT_RGBA24,
 	VPDMA_DATA_FMT_RGBA32,
 	VPDMA_DATA_FMT_BGR565,
 	VPDMA_DATA_FMT_ABGR16_1555,
 	VPDMA_DATA_FMT_ABGR16,
 	VPDMA_DATA_FMT_BGRA16_5551,
 	VPDMA_DATA_FMT_BGRA16,
 	VPDMA_DATA_FMT_ABGR24,
 	VPDMA_DATA_FMT_BGR24,
 	VPDMA_DATA_FMT_ABGR32,
 	VPDMA_DATA_FMT_BGRA24,
 	VPDMA_DATA_FMT_BGRA32,
 };

 enum vpdma_raw_formats {
 	VPDMA_DATA_FMT_RAW8 = 0,
 	VPDMA_DATA_FMT_RAW16,
 };

 enum vpdma_misc_formats {
 	VPDMA_DATA_FMT_MV = 0,
 };

 extern const struct vpdma_data_format vpdma_yuv_fmts[];
 extern const struct vpdma_data_format vpdma_rgb_fmts[];
 extern const struct vpdma_data_format vpdma_raw_fmts[];
 extern const struct vpdma_data_format vpdma_misc_fmts[];

 enum vpdma_frame_start_event {
 	VPDMA_FSEVENT_HDMI_FID = 0,
 	VPDMA_FSEVENT_DVO2_FID,
 	VPDMA_FSEVENT_HDCOMP_FID,
 	VPDMA_FSEVENT_SD_FID,
 	VPDMA_FSEVENT_LM_FID0,
 	VPDMA_FSEVENT_LM_FID1,
 	VPDMA_FSEVENT_LM_FID2,
 	VPDMA_FSEVENT_CHANNEL_ACTIVE,
 };

 /* max width configurations */
 enum vpdma_max_width {
 	MAX_OUT_WIDTH_UNLIMITED = 0,
 	MAX_OUT_WIDTH_REG1,
 	MAX_OUT_WIDTH_REG2,
 	MAX_OUT_WIDTH_REG3,
 	MAX_OUT_WIDTH_352,
 	MAX_OUT_WIDTH_768,
 	MAX_OUT_WIDTH_1280,
 	MAX_OUT_WIDTH_1920,
 };

 /* max height configurations */
 enum vpdma_max_height {
 	MAX_OUT_HEIGHT_UNLIMITED = 0,
 	MAX_OUT_HEIGHT_REG1,
 	MAX_OUT_HEIGHT_REG2,
 	MAX_OUT_HEIGHT_REG3,
 	MAX_OUT_HEIGHT_288,
 	MAX_OUT_HEIGHT_576,
 	MAX_OUT_HEIGHT_720,
 	MAX_OUT_HEIGHT_1080,
 };

 /*
  * VPDMA channel numbers
  */
 enum vpdma_channel {
 	VPE_CHAN_LUMA1_IN,
 	VPE_CHAN_CHROMA1_IN,
 	VPE_CHAN_LUMA2_IN,
 	VPE_CHAN_CHROMA2_IN,
 	VPE_CHAN_LUMA3_IN,
 	VPE_CHAN_CHROMA3_IN,
 	VPE_CHAN_MV_IN,
 	VPE_CHAN_MV_OUT,
 	VPE_CHAN_LUMA_OUT,
 	VPE_CHAN_CHROMA_OUT,
 	VPE_CHAN_RGB_OUT,
 };

 #define VIP_CHAN_VIP2_OFFSET		70
 #define VIP_CHAN_MULT_PORTB_OFFSET	16
 #define VIP_CHAN_YUV_PORTB_OFFSET	2
 #define VIP_CHAN_RGB_PORTB_OFFSET	1

 #define VPDMA_MAX_CHANNELS		256

 /* flags for VPDMA data descriptors */
 #define VPDMA_DATA_ODD_LINE_SKIP	(1 << 0)
 #define VPDMA_DATA_EVEN_LINE_SKIP	(1 << 1)
 #define VPDMA_DATA_FRAME_1D		(1 << 2)
 #define VPDMA_DATA_MODE_TILED		(1 << 3)

 /*
  * client identifiers used for configuration descriptors
  */
 #define CFD_MMR_CLIENT		0
 #define CFD_SC_CLIENT		4

 /* Address data block header format */
 struct vpdma_adb_hdr {
 	u32			offset;
 	u32			nwords;
 	u32			reserved0;
 	u32			reserved1;
 };

 /* helpers for creating ADB headers for config descriptors MMRs as client */
 #define ADB_ADDR(dma_buf, str, fld)	((dma_buf)->addr + offsetof(str, fld))
 #define MMR_ADB_ADDR(buf, str, fld)	ADB_ADDR(&(buf), struct str, fld)

 #define VPDMA_SET_MMR_ADB_HDR(buf, str, hdr, regs, offset_a)	\
 	do {							\
 		struct vpdma_adb_hdr *h;			\
 		struct str *adb = NULL;				\
 		h = MMR_ADB_ADDR(buf, str, hdr);		\
 		h->offset = (offset_a);				\
 		h->nwords = sizeof(adb->regs) >> 2;		\
 	} while (0)

 /* vpdma descriptor buffer allocation and management */
 int vpdma_alloc_desc_buf(struct vpdma_buf *buf, size_t size);
 void vpdma_free_desc_buf(struct vpdma_buf *buf);
 int vpdma_map_desc_buf(struct vpdma_data *vpdma, struct vpdma_buf *buf);
 void vpdma_unmap_desc_buf(struct vpdma_data *vpdma, struct vpdma_buf *buf);

 /* vpdma descriptor list funcs */
 int vpdma_create_desc_list(struct vpdma_desc_list *list, size_t size, int type);
 void vpdma_reset_desc_list(struct vpdma_desc_list *list);
 void vpdma_free_desc_list(struct vpdma_desc_list *list);
 int vpdma_submit_descs(struct vpdma_data *vpdma, struct vpdma_desc_list *list,
 		       int list_num);
 bool vpdma_list_busy(struct vpdma_data *vpdma, int list_num);
 void vpdma_update_dma_addr(struct vpdma_data *vpdma,
 	struct vpdma_desc_list *list, dma_addr_t dma_addr,
 	void *write_dtd, int drop, int idx);

 /* VPDMA hardware list funcs */
 int vpdma_hwlist_alloc(struct vpdma_data *vpdma, void *priv);
 void *vpdma_hwlist_get_priv(struct vpdma_data *vpdma, int list_num);
 void *vpdma_hwlist_release(struct vpdma_data *vpdma, int list_num);

 /* helpers for creating vpdma descriptors */
 void vpdma_add_cfd_block(struct vpdma_desc_list *list, int client,
 		struct vpdma_buf *blk, u32 dest_offset);
 void vpdma_add_cfd_adb(struct vpdma_desc_list *list, int client,
 		struct vpdma_buf *adb);
 void vpdma_add_sync_on_channel_ctd(struct vpdma_desc_list *list,
 		enum vpdma_channel chan);
 void vpdma_add_abort_channel_ctd(struct vpdma_desc_list *list,
 		int chan_num);
 void vpdma_add_out_dtd(struct vpdma_desc_list *list, int width,
 		int stride, const struct v4l2_rect *c_rect,
 		const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
 		int max_w, int max_h, enum vpdma_channel chan, u32 flags);
 void vpdma_rawchan_add_out_dtd(struct vpdma_desc_list *list, int width,
 		int stride, const struct v4l2_rect *c_rect,
 		const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
 		int max_w, int max_h, int raw_vpdma_chan, u32 flags);

 void vpdma_add_in_dtd(struct vpdma_desc_list *list, int width,
 		int stride, const struct v4l2_rect *c_rect,
 		const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
 		enum vpdma_channel chan, int field, u32 flags, int frame_width,
 		int frame_height, int start_h, int start_v);
 int vpdma_list_cleanup(struct vpdma_data *vpdma, int list_num,
 		int *channels, int size);

 /* vpdma list interrupt management */
 void vpdma_enable_list_complete_irq(struct vpdma_data *vpdma, int irq_num,
 		int list_num, bool enable);
 void vpdma_clear_list_stat(struct vpdma_data *vpdma, int irq_num,
 			   int list_num);
 unsigned int vpdma_get_list_stat(struct vpdma_data *vpdma, int irq_num);
 unsigned int vpdma_get_list_mask(struct vpdma_data *vpdma, int irq_num);

 /* vpdma client configuration */
 void vpdma_set_line_mode(struct vpdma_data *vpdma, int line_mode,
 		enum vpdma_channel chan);
 void vpdma_set_frame_start_event(struct vpdma_data *vpdma,
 		enum vpdma_frame_start_event fs_event, enum vpdma_channel chan);
 void vpdma_set_max_size(struct vpdma_data *vpdma, int reg_addr,
 			u32 width, u32 height);

 void vpdma_set_bg_color(struct vpdma_data *vpdma,
 			struct vpdma_data_format *fmt, u32 color);
 void vpdma_dump_regs(struct vpdma_data *vpdma);

 /* initialize vpdma, passed with VPE's platform device pointer */
 int vpdma_create(struct platform_device *pdev, struct vpdma_data *vpdma,
 		void (*cb)(struct platform_device *pdev));

 #endif
	/*
	* Copyright (c) 2013 Texas Instruments Inc.
	*
	* David Griego, <dagriego@biglakesoftware.com>
	* Dale Farnsworth, <dale@farnsworth.org>
	* Archit Taneja, <archit@ti.com>
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 as published by
	* the Free Software Foundation.
	*/

	#ifndef __TI_VPDMA_H_
	#define __TI_VPDMA_H_

	#define VPDMA_MAX_NUM_LIST 8
	/*
	* A vpdma_buf tracks the size, DMA address and mapping status of each
	* driver DMA area.
	*/
	struct vpdma_buf {
	void *addr;
	dma_addr_t dma_addr;
	size_t size;
	bool mapped;
	};

	struct vpdma_desc_list {
	struct vpdma_buf buf;
	void *next;
	int type;
	};

	struct vpdma_data {
	void __iomem *base;

	struct platform_device *pdev;

	spinlock_t lock;
	bool hwlist_used[VPDMA_MAX_NUM_LIST];
	void *hwlist_priv[VPDMA_MAX_NUM_LIST];
	/* callback to VPE driver when the firmware is loaded */
	void (cb)(struct platform_device pdev);
	};

	enum vpdma_data_format_type {
	VPDMA_DATA_FMT_TYPE_YUV,
	VPDMA_DATA_FMT_TYPE_RGB,
	VPDMA_DATA_FMT_TYPE_MISC,
	};

	struct vpdma_data_format {
	enum vpdma_data_format_type type;
	int data_type;
	u8 depth;
	};

	#define VPDMA_DESC_ALIGN 16 /* 16-byte descriptor alignment */
	#define VPDMA_STRIDE_ALIGN 16 /*
	* line stride of source and dest
	* buffers should be 16 byte aligned
	*/
	#define VPDMA_DTD_DESC_SIZE 32 /* 8 words */
	#define VPDMA_CFD_CTD_DESC_SIZE 16 /* 4 words */

	#define VPDMA_LIST_TYPE_NORMAL 0
	#define VPDMA_LIST_TYPE_SELF_MODIFYING 1
	#define VPDMA_LIST_TYPE_DOORBELL 2

	enum vpdma_yuv_formats {
	VPDMA_DATA_FMT_Y444 = 0,
	VPDMA_DATA_FMT_Y422,
	VPDMA_DATA_FMT_Y420,
	VPDMA_DATA_FMT_C444,
	VPDMA_DATA_FMT_C422,
	VPDMA_DATA_FMT_C420,
	VPDMA_DATA_FMT_YCR422,
	VPDMA_DATA_FMT_YC444,
	VPDMA_DATA_FMT_CRY422,
	VPDMA_DATA_FMT_CBY422,
	VPDMA_DATA_FMT_YCB422,
	};

	enum vpdma_rgb_formats {
	VPDMA_DATA_FMT_RGB565 = 0,
	VPDMA_DATA_FMT_ARGB16_1555,
	VPDMA_DATA_FMT_ARGB16,
	VPDMA_DATA_FMT_RGBA16_5551,
	VPDMA_DATA_FMT_RGBA16,
	VPDMA_DATA_FMT_ARGB24,
	VPDMA_DATA_FMT_RGB24,
	VPDMA_DATA_FMT_ARGB32,
	VPDMA_DATA_FMT_RGBA24,
	VPDMA_DATA_FMT_RGBA32,
	VPDMA_DATA_FMT_BGR565,
	VPDMA_DATA_FMT_ABGR16_1555,
	VPDMA_DATA_FMT_ABGR16,
	VPDMA_DATA_FMT_BGRA16_5551,
	VPDMA_DATA_FMT_BGRA16,
	VPDMA_DATA_FMT_ABGR24,
	VPDMA_DATA_FMT_BGR24,
	VPDMA_DATA_FMT_ABGR32,
	VPDMA_DATA_FMT_BGRA24,
	VPDMA_DATA_FMT_BGRA32,
	};

	enum vpdma_raw_formats {
	VPDMA_DATA_FMT_RAW8 = 0,
	VPDMA_DATA_FMT_RAW16,
	};

	enum vpdma_misc_formats {
	VPDMA_DATA_FMT_MV = 0,
	};

	extern const struct vpdma_data_format vpdma_yuv_fmts[];
	extern const struct vpdma_data_format vpdma_rgb_fmts[];
	extern const struct vpdma_data_format vpdma_raw_fmts[];
	extern const struct vpdma_data_format vpdma_misc_fmts[];

	enum vpdma_frame_start_event {
	VPDMA_FSEVENT_HDMI_FID = 0,
	VPDMA_FSEVENT_DVO2_FID,
	VPDMA_FSEVENT_HDCOMP_FID,
	VPDMA_FSEVENT_SD_FID,
	VPDMA_FSEVENT_LM_FID0,
	VPDMA_FSEVENT_LM_FID1,
	VPDMA_FSEVENT_LM_FID2,
	VPDMA_FSEVENT_CHANNEL_ACTIVE,
	};

	/* max width configurations */
	enum vpdma_max_width {
	MAX_OUT_WIDTH_UNLIMITED = 0,
	MAX_OUT_WIDTH_REG1,
	MAX_OUT_WIDTH_REG2,
	MAX_OUT_WIDTH_REG3,
	MAX_OUT_WIDTH_352,
	MAX_OUT_WIDTH_768,
	MAX_OUT_WIDTH_1280,
	MAX_OUT_WIDTH_1920,
	};

	/* max height configurations */
	enum vpdma_max_height {
	MAX_OUT_HEIGHT_UNLIMITED = 0,
	MAX_OUT_HEIGHT_REG1,
	MAX_OUT_HEIGHT_REG2,
	MAX_OUT_HEIGHT_REG3,
	MAX_OUT_HEIGHT_288,
	MAX_OUT_HEIGHT_576,
	MAX_OUT_HEIGHT_720,
	MAX_OUT_HEIGHT_1080,
	};

	/*
	* VPDMA channel numbers
	*/
	enum vpdma_channel {
	VPE_CHAN_LUMA1_IN,
	VPE_CHAN_CHROMA1_IN,
	VPE_CHAN_LUMA2_IN,
	VPE_CHAN_CHROMA2_IN,
	VPE_CHAN_LUMA3_IN,
	VPE_CHAN_CHROMA3_IN,
	VPE_CHAN_MV_IN,
	VPE_CHAN_MV_OUT,
	VPE_CHAN_LUMA_OUT,
	VPE_CHAN_CHROMA_OUT,
	VPE_CHAN_RGB_OUT,
	};

	#define VIP_CHAN_VIP2_OFFSET 70
	#define VIP_CHAN_MULT_PORTB_OFFSET 16
	#define VIP_CHAN_YUV_PORTB_OFFSET 2
	#define VIP_CHAN_RGB_PORTB_OFFSET 1

	#define VPDMA_MAX_CHANNELS 256

	/* flags for VPDMA data descriptors */
	#define VPDMA_DATA_ODD_LINE_SKIP (1 << 0)
	#define VPDMA_DATA_EVEN_LINE_SKIP (1 << 1)
	#define VPDMA_DATA_FRAME_1D (1 << 2)
	#define VPDMA_DATA_MODE_TILED (1 << 3)

	/*
	* client identifiers used for configuration descriptors
	*/
	#define CFD_MMR_CLIENT 0
	#define CFD_SC_CLIENT 4

	/* Address data block header format */
	struct vpdma_adb_hdr {
	u32 offset;
	u32 nwords;
	u32 reserved0;
	u32 reserved1;
	};

	/* helpers for creating ADB headers for config descriptors MMRs as client */
	#define ADB_ADDR(dma_buf, str, fld) ((dma_buf)->addr + offsetof(str, fld))
	#define MMR_ADB_ADDR(buf, str, fld) ADB_ADDR(&(buf), struct str, fld)

	#define VPDMA_SET_MMR_ADB_HDR(buf, str, hdr, regs, offset_a) \
	do { \
	struct vpdma_adb_hdr *h; \
	struct str *adb = NULL; \
	h = MMR_ADB_ADDR(buf, str, hdr); \
	h->offset = (offset_a); \
	h->nwords = sizeof(adb->regs) >> 2; \
	} while (0)

	/* vpdma descriptor buffer allocation and management */
	int vpdma_alloc_desc_buf(struct vpdma_buf *buf, size_t size);
	void vpdma_free_desc_buf(struct vpdma_buf *buf);
	int vpdma_map_desc_buf(struct vpdma_data vpdma, struct vpdma_buf buf);
	void vpdma_unmap_desc_buf(struct vpdma_data vpdma, struct vpdma_buf buf);

	/* vpdma descriptor list funcs */
	int vpdma_create_desc_list(struct vpdma_desc_list *list, size_t size, int type);
	void vpdma_reset_desc_list(struct vpdma_desc_list *list);
	void vpdma_free_desc_list(struct vpdma_desc_list *list);
	int vpdma_submit_descs(struct vpdma_data vpdma, struct vpdma_desc_list list,
	int list_num);
	bool vpdma_list_busy(struct vpdma_data *vpdma, int list_num);
	void vpdma_update_dma_addr(struct vpdma_data *vpdma,
	struct vpdma_desc_list *list, dma_addr_t dma_addr,
	void *write_dtd, int drop, int idx);

	/* VPDMA hardware list funcs */
	int vpdma_hwlist_alloc(struct vpdma_data vpdma, void priv);
	void vpdma_hwlist_get_priv(struct vpdma_data vpdma, int list_num);
	void vpdma_hwlist_release(struct vpdma_data vpdma, int list_num);

	/* helpers for creating vpdma descriptors */
	void vpdma_add_cfd_block(struct vpdma_desc_list *list, int client,
	struct vpdma_buf *blk, u32 dest_offset);
	void vpdma_add_cfd_adb(struct vpdma_desc_list *list, int client,
	struct vpdma_buf *adb);
	void vpdma_add_sync_on_channel_ctd(struct vpdma_desc_list *list,
	enum vpdma_channel chan);
	void vpdma_add_abort_channel_ctd(struct vpdma_desc_list *list,
	int chan_num);
	void vpdma_add_out_dtd(struct vpdma_desc_list *list, int width,
	int stride, const struct v4l2_rect *c_rect,
	const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
	int max_w, int max_h, enum vpdma_channel chan, u32 flags);
	void vpdma_rawchan_add_out_dtd(struct vpdma_desc_list *list, int width,
	int stride, const struct v4l2_rect *c_rect,
	const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
	int max_w, int max_h, int raw_vpdma_chan, u32 flags);

	void vpdma_add_in_dtd(struct vpdma_desc_list *list, int width,
	int stride, const struct v4l2_rect *c_rect,
	const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
	enum vpdma_channel chan, int field, u32 flags, int frame_width,
	int frame_height, int start_h, int start_v);
	int vpdma_list_cleanup(struct vpdma_data *vpdma, int list_num,
	int *channels, int size);

	/* vpdma list interrupt management */
	void vpdma_enable_list_complete_irq(struct vpdma_data *vpdma, int irq_num,
	int list_num, bool enable);
	void vpdma_clear_list_stat(struct vpdma_data *vpdma, int irq_num,
	int list_num);
	unsigned int vpdma_get_list_stat(struct vpdma_data *vpdma, int irq_num);
	unsigned int vpdma_get_list_mask(struct vpdma_data *vpdma, int irq_num);

	/* vpdma client configuration */
	void vpdma_set_line_mode(struct vpdma_data *vpdma, int line_mode,
	enum vpdma_channel chan);
	void vpdma_set_frame_start_event(struct vpdma_data *vpdma,
	enum vpdma_frame_start_event fs_event, enum vpdma_channel chan);
	void vpdma_set_max_size(struct vpdma_data *vpdma, int reg_addr,
	u32 width, u32 height);

	void vpdma_set_bg_color(struct vpdma_data *vpdma,
	struct vpdma_data_format *fmt, u32 color);
	void vpdma_dump_regs(struct vpdma_data *vpdma);

	/* initialize vpdma, passed with VPE's platform device pointer */
	int vpdma_create(struct platform_device pdev, struct vpdma_data vpdma,
	void (cb)(struct platform_device pdev));

	#endif