drivers/media/platform/am437x/am437x-vpfe.h - kernel/quantenna - Git at Google

 /*
  * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
  *
  * Benoit Parrot <bparrot@ti.com>
  * Lad, Prabhakar <prabhakar.csengg@gmail.com>
  *
  * This program is free software; you may redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */

 #ifndef AM437X_VPFE_H
 #define AM437X_VPFE_H

 #include <linux/am437x-vpfe.h>
 #include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/io.h>
 #include <linux/i2c.h>
 #include <linux/videodev2.h>

 #include <media/v4l2-dev.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ioctl.h>
 #include <media/videobuf2-v4l2.h>
 #include <media/videobuf2-dma-contig.h>

 #include "am437x-vpfe_regs.h"

 enum vpfe_pin_pol {
 	VPFE_PINPOL_POSITIVE = 0,
 	VPFE_PINPOL_NEGATIVE,
 };

 enum vpfe_hw_if_type {
 	/* Raw Bayer */
 	VPFE_RAW_BAYER = 0,
 	/* BT656 - 8 bit */
 	VPFE_BT656,
 	/* BT656 - 10 bit */
 	VPFE_BT656_10BIT,
 	/* YCbCr - 8 bit with external sync */
 	VPFE_YCBCR_SYNC_8,
 	/* YCbCr - 16 bit with external sync */
 	VPFE_YCBCR_SYNC_16,
 };

 /* interface description */
 struct vpfe_hw_if_param {
 	enum vpfe_hw_if_type if_type;
 	enum vpfe_pin_pol hdpol;
 	enum vpfe_pin_pol vdpol;
 	unsigned int bus_width;
 };

 #define VPFE_MAX_SUBDEV		1
 #define VPFE_MAX_INPUTS		1

 struct vpfe_pixel_format {
 	struct v4l2_fmtdesc fmtdesc;
 	/* bytes per pixel */
 	int bpp;
 };

 struct vpfe_std_info {
 	int active_pixels;
 	int active_lines;
 	/* current frame format */
 	int frame_format;
 };

 struct vpfe_route {
 	u32 input;
 	u32 output;
 };

 struct vpfe_subdev_info {
 	/* Sub device group id */
 	int grp_id;
 	/* inputs available at the sub device */
 	struct v4l2_input inputs[VPFE_MAX_INPUTS];
 	/* Sub dev routing information for each input */
 	struct vpfe_route *routes;
 	/* check if sub dev supports routing */
 	int can_route;
 	/* ccdc bus/interface configuration */
 	struct vpfe_hw_if_param vpfe_param;
 	struct v4l2_subdev *sd;
 };

 struct vpfe_config {
 	/* information about each subdev */
 	struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV];
 	/* Flat array, arranged in groups */
 	struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV];
 };

 struct vpfe_cap_buffer {
 	struct vb2_v4l2_buffer vb;
 	struct list_head list;
 };

 enum ccdc_pixfmt {
 	CCDC_PIXFMT_RAW = 0,
 	CCDC_PIXFMT_YCBCR_16BIT,
 	CCDC_PIXFMT_YCBCR_8BIT,
 };

 enum ccdc_frmfmt {
 	CCDC_FRMFMT_PROGRESSIVE = 0,
 	CCDC_FRMFMT_INTERLACED,
 };

 /* PIXEL ORDER IN MEMORY from LSB to MSB */
 /* only applicable for 8-bit input mode  */
 enum ccdc_pixorder {
 	CCDC_PIXORDER_YCBYCR,
 	CCDC_PIXORDER_CBYCRY,
 };

 enum ccdc_buftype {
 	CCDC_BUFTYPE_FLD_INTERLEAVED,
 	CCDC_BUFTYPE_FLD_SEPARATED
 };


 /* returns the highest bit used for the gamma */
 static inline u8 ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width)
 {
 	return 15 - width;
 }

 /* returns the highest bit used for this data size */
 static inline u8 ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz)
 {
 	return sz == VPFE_CCDC_DATA_8BITS ? 7 : 15 - sz;
 }

 /* Structure for CCDC configuration parameters for raw capture mode */
 struct ccdc_params_raw {
 	/* pixel format */
 	enum ccdc_pixfmt pix_fmt;
 	/* progressive or interlaced frame */
 	enum ccdc_frmfmt frm_fmt;
 	struct v4l2_rect win;
 	/* Current Format Bytes Per Pixels */
 	unsigned int bytesperpixel;
 	/* Current Format Bytes per Lines
 	 * (Aligned to 32 bytes) used for HORZ_INFO
 	 */
 	unsigned int bytesperline;
 	/* field id polarity */
 	enum vpfe_pin_pol fid_pol;
 	/* vertical sync polarity */
 	enum vpfe_pin_pol vd_pol;
 	/* horizontal sync polarity */
 	enum vpfe_pin_pol hd_pol;
 	/* interleaved or separated fields */
 	enum ccdc_buftype buf_type;
 	/*
 	 * enable to store the image in inverse
 	 * order in memory(bottom to top)
 	 */
 	unsigned char image_invert_enable;
 	/* configurable parameters */
 	struct vpfe_ccdc_config_params_raw config_params;
 };

 struct ccdc_params_ycbcr {
 	/* pixel format */
 	enum ccdc_pixfmt pix_fmt;
 	/* progressive or interlaced frame */
 	enum ccdc_frmfmt frm_fmt;
 	struct v4l2_rect win;
 	/* Current Format Bytes Per Pixels */
 	unsigned int bytesperpixel;
 	/* Current Format Bytes per Lines
 	 * (Aligned to 32 bytes) used for HORZ_INFO
 	 */
 	unsigned int bytesperline;
 	/* field id polarity */
 	enum vpfe_pin_pol fid_pol;
 	/* vertical sync polarity */
 	enum vpfe_pin_pol vd_pol;
 	/* horizontal sync polarity */
 	enum vpfe_pin_pol hd_pol;
 	/* enable BT.656 embedded sync mode */
 	int bt656_enable;
 	/* cb:y:cr:y or y:cb:y:cr in memory */
 	enum ccdc_pixorder pix_order;
 	/* interleaved or separated fields  */
 	enum ccdc_buftype buf_type;
 };

 /*
  * CCDC operational configuration
  */
 struct ccdc_config {
 	/* CCDC interface type */
 	enum vpfe_hw_if_type if_type;
 	/* Raw Bayer configuration */
 	struct ccdc_params_raw bayer;
 	/* YCbCr configuration */
 	struct ccdc_params_ycbcr ycbcr;
 	/* ccdc base address */
 	void __iomem *base_addr;
 };

 struct vpfe_ccdc {
 	struct ccdc_config ccdc_cfg;
 	u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)];
 };

 struct vpfe_device {
 	/* V4l2 specific parameters */
 	/* Identifies video device for this channel */
 	struct video_device video_dev;
 	/* sub devices */
 	struct v4l2_subdev **sd;
 	/* vpfe cfg */
 	struct vpfe_config *cfg;
 	/* V4l2 device */
 	struct v4l2_device v4l2_dev;
 	/* parent device */
 	struct device *pdev;
 	/* subdevice async Notifier */
 	struct v4l2_async_notifier notifier;
 	/* Indicates id of the field which is being displayed */
 	unsigned field;
 	unsigned sequence;
 	/* current interface type */
 	struct vpfe_hw_if_param vpfe_if_params;
 	/* ptr to currently selected sub device */
 	struct vpfe_subdev_info *current_subdev;
 	/* current input at the sub device */
 	int current_input;
 	/* Keeps track of the information about the standard */
 	struct vpfe_std_info std_info;
 	/* std index into std table */
 	int std_index;
 	/* IRQs used when CCDC output to SDRAM */
 	unsigned int irq;
 	/* Pointer pointing to current v4l2_buffer */
 	struct vpfe_cap_buffer *cur_frm;
 	/* Pointer pointing to next v4l2_buffer */
 	struct vpfe_cap_buffer *next_frm;
 	/* Used to store pixel format */
 	struct v4l2_format fmt;
 	/* Used to store current bytes per pixel based on current format */
 	unsigned int bpp;
 	/*
 	 * used when IMP is chained to store the crop window which
 	 * is different from the image window
 	 */
 	struct v4l2_rect crop;
 	/* Buffer queue used in video-buf */
 	struct vb2_queue buffer_queue;
 	/* Allocator-specific contexts for each plane */
 	struct vb2_alloc_ctx *alloc_ctx;
 	/* Queue of filled frames */
 	struct list_head dma_queue;
 	/* IRQ lock for DMA queue */
 	spinlock_t dma_queue_lock;
 	/* lock used to access this structure */
 	struct mutex lock;
 	/*
 	 * offset where second field starts from the starting of the
 	 * buffer for field separated YCbCr formats
 	 */
 	u32 field_off;
 	struct vpfe_ccdc ccdc;
 };

 #endif	/* AM437X_VPFE_H */
	/*
	* Copyright (C) 2013 - 2014 Texas Instruments, Inc.
	*
	* Benoit Parrot <bparrot@ti.com>
	* Lad, Prabhakar <prabhakar.csengg@gmail.com>
	*
	* This program is free software; you may redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; version 2 of the License.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	* SOFTWARE.
	*/

	#ifndef AM437X_VPFE_H
	#define AM437X_VPFE_H

	#include <linux/am437x-vpfe.h>
	#include <linux/clk.h>
	#include <linux/device.h>
	#include <linux/io.h>
	#include <linux/i2c.h>
	#include <linux/videodev2.h>

	#include <media/v4l2-dev.h>
	#include <media/v4l2-device.h>
	#include <media/v4l2-ioctl.h>
	#include <media/videobuf2-v4l2.h>
	#include <media/videobuf2-dma-contig.h>

	#include "am437x-vpfe_regs.h"

	enum vpfe_pin_pol {
	VPFE_PINPOL_POSITIVE = 0,
	VPFE_PINPOL_NEGATIVE,
	};

	enum vpfe_hw_if_type {
	/* Raw Bayer */
	VPFE_RAW_BAYER = 0,
	/* BT656 - 8 bit */
	VPFE_BT656,
	/* BT656 - 10 bit */
	VPFE_BT656_10BIT,
	/* YCbCr - 8 bit with external sync */
	VPFE_YCBCR_SYNC_8,
	/* YCbCr - 16 bit with external sync */
	VPFE_YCBCR_SYNC_16,
	};

	/* interface description */
	struct vpfe_hw_if_param {
	enum vpfe_hw_if_type if_type;
	enum vpfe_pin_pol hdpol;
	enum vpfe_pin_pol vdpol;
	unsigned int bus_width;
	};

	#define VPFE_MAX_SUBDEV 1
	#define VPFE_MAX_INPUTS 1

	struct vpfe_pixel_format {
	struct v4l2_fmtdesc fmtdesc;
	/* bytes per pixel */
	int bpp;
	};

	struct vpfe_std_info {
	int active_pixels;
	int active_lines;
	/* current frame format */
	int frame_format;
	};

	struct vpfe_route {
	u32 input;
	u32 output;
	};

	struct vpfe_subdev_info {
	/* Sub device group id */
	int grp_id;
	/* inputs available at the sub device */
	struct v4l2_input inputs[VPFE_MAX_INPUTS];
	/* Sub dev routing information for each input */
	struct vpfe_route *routes;
	/* check if sub dev supports routing */
	int can_route;
	/* ccdc bus/interface configuration */
	struct vpfe_hw_if_param vpfe_param;
	struct v4l2_subdev *sd;
	};

	struct vpfe_config {
	/* information about each subdev */
	struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV];
	/* Flat array, arranged in groups */
	struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV];
	};

	struct vpfe_cap_buffer {
	struct vb2_v4l2_buffer vb;
	struct list_head list;
	};

	enum ccdc_pixfmt {
	CCDC_PIXFMT_RAW = 0,
	CCDC_PIXFMT_YCBCR_16BIT,
	CCDC_PIXFMT_YCBCR_8BIT,
	};

	enum ccdc_frmfmt {
	CCDC_FRMFMT_PROGRESSIVE = 0,
	CCDC_FRMFMT_INTERLACED,
	};

	/* PIXEL ORDER IN MEMORY from LSB to MSB */
	/* only applicable for 8-bit input mode */
	enum ccdc_pixorder {
	CCDC_PIXORDER_YCBYCR,
	CCDC_PIXORDER_CBYCRY,
	};

	enum ccdc_buftype {
	CCDC_BUFTYPE_FLD_INTERLEAVED,
	CCDC_BUFTYPE_FLD_SEPARATED
	};


	/* returns the highest bit used for the gamma */
	static inline u8 ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width)
	{
	return 15 - width;
	}

	/* returns the highest bit used for this data size */
	static inline u8 ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz)
	{
	return sz == VPFE_CCDC_DATA_8BITS ? 7 : 15 - sz;
	}

	/* Structure for CCDC configuration parameters for raw capture mode */
	struct ccdc_params_raw {
	/* pixel format */
	enum ccdc_pixfmt pix_fmt;
	/* progressive or interlaced frame */
	enum ccdc_frmfmt frm_fmt;
	struct v4l2_rect win;
	/* Current Format Bytes Per Pixels */
	unsigned int bytesperpixel;
	/* Current Format Bytes per Lines
	* (Aligned to 32 bytes) used for HORZ_INFO
	*/
	unsigned int bytesperline;
	/* field id polarity */
	enum vpfe_pin_pol fid_pol;
	/* vertical sync polarity */
	enum vpfe_pin_pol vd_pol;
	/* horizontal sync polarity */
	enum vpfe_pin_pol hd_pol;
	/* interleaved or separated fields */
	enum ccdc_buftype buf_type;
	/*
	* enable to store the image in inverse
	* order in memory(bottom to top)
	*/
	unsigned char image_invert_enable;
	/* configurable parameters */
	struct vpfe_ccdc_config_params_raw config_params;
	};

	struct ccdc_params_ycbcr {
	/* pixel format */
	enum ccdc_pixfmt pix_fmt;
	/* progressive or interlaced frame */
	enum ccdc_frmfmt frm_fmt;
	struct v4l2_rect win;
	/* Current Format Bytes Per Pixels */
	unsigned int bytesperpixel;
	/* Current Format Bytes per Lines
	* (Aligned to 32 bytes) used for HORZ_INFO
	*/
	unsigned int bytesperline;
	/* field id polarity */
	enum vpfe_pin_pol fid_pol;
	/* vertical sync polarity */
	enum vpfe_pin_pol vd_pol;
	/* horizontal sync polarity */
	enum vpfe_pin_pol hd_pol;
	/* enable BT.656 embedded sync mode */
	int bt656_enable;
	/* cb:y:cr:y or y:cb:y:cr in memory */
	enum ccdc_pixorder pix_order;
	/* interleaved or separated fields */
	enum ccdc_buftype buf_type;
	};

	/*
	* CCDC operational configuration
	*/
	struct ccdc_config {
	/* CCDC interface type */
	enum vpfe_hw_if_type if_type;
	/* Raw Bayer configuration */
	struct ccdc_params_raw bayer;
	/* YCbCr configuration */
	struct ccdc_params_ycbcr ycbcr;
	/* ccdc base address */
	void __iomem *base_addr;
	};

	struct vpfe_ccdc {
	struct ccdc_config ccdc_cfg;
	u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)];
	};

	struct vpfe_device {
	/* V4l2 specific parameters */
	/* Identifies video device for this channel */
	struct video_device video_dev;
	/* sub devices */
	struct v4l2_subdev **sd;
	/* vpfe cfg */
	struct vpfe_config *cfg;
	/* V4l2 device */
	struct v4l2_device v4l2_dev;
	/* parent device */
	struct device *pdev;
	/* subdevice async Notifier */
	struct v4l2_async_notifier notifier;
	/* Indicates id of the field which is being displayed */
	unsigned field;
	unsigned sequence;
	/* current interface type */
	struct vpfe_hw_if_param vpfe_if_params;
	/* ptr to currently selected sub device */
	struct vpfe_subdev_info *current_subdev;
	/* current input at the sub device */
	int current_input;
	/* Keeps track of the information about the standard */
	struct vpfe_std_info std_info;
	/* std index into std table */
	int std_index;
	/* IRQs used when CCDC output to SDRAM */
	unsigned int irq;
	/* Pointer pointing to current v4l2_buffer */
	struct vpfe_cap_buffer *cur_frm;
	/* Pointer pointing to next v4l2_buffer */
	struct vpfe_cap_buffer *next_frm;
	/* Used to store pixel format */
	struct v4l2_format fmt;
	/* Used to store current bytes per pixel based on current format */
	unsigned int bpp;
	/*
	* used when IMP is chained to store the crop window which
	* is different from the image window
	*/
	struct v4l2_rect crop;
	/* Buffer queue used in video-buf */
	struct vb2_queue buffer_queue;
	/* Allocator-specific contexts for each plane */
	struct vb2_alloc_ctx *alloc_ctx;
	/* Queue of filled frames */
	struct list_head dma_queue;
	/* IRQ lock for DMA queue */
	spinlock_t dma_queue_lock;
	/* lock used to access this structure */
	struct mutex lock;
	/*
	* offset where second field starts from the starting of the
	* buffer for field separated YCbCr formats
	*/
	u32 field_off;
	struct vpfe_ccdc ccdc;
	};

	#endif /* AM437X_VPFE_H */