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</*
* 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 */
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