282 lines
7 KiB
C
282 lines
7 KiB
C
/*
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* Copyright (C) 2013 - 2014 Texas Instruments, Inc.
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*
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* Benoit Parrot <bparrot@ti.com>
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* Lad, Prabhakar <prabhakar.csengg@gmail.com>
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef AM437X_VPFE_H
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#define AM437X_VPFE_H
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#include <linux/am437x-vpfe.h>
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#include <linux/clk.h>
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#include <linux/device.h>
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#include <linux/io.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/videobuf2-v4l2.h>
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#include <media/videobuf2-dma-contig.h>
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#include "am437x-vpfe_regs.h"
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enum vpfe_pin_pol {
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VPFE_PINPOL_POSITIVE = 0,
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VPFE_PINPOL_NEGATIVE,
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};
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enum vpfe_hw_if_type {
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/* Raw Bayer */
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VPFE_RAW_BAYER = 0,
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/* BT656 - 8 bit */
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VPFE_BT656,
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/* BT656 - 10 bit */
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VPFE_BT656_10BIT,
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/* YCbCr - 8 bit with external sync */
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VPFE_YCBCR_SYNC_8,
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/* YCbCr - 16 bit with external sync */
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VPFE_YCBCR_SYNC_16,
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};
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/* interface description */
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struct vpfe_hw_if_param {
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enum vpfe_hw_if_type if_type;
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enum vpfe_pin_pol hdpol;
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enum vpfe_pin_pol vdpol;
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unsigned int bus_width;
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};
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#define VPFE_MAX_SUBDEV 1
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#define VPFE_MAX_INPUTS 1
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struct vpfe_pixel_format {
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struct v4l2_fmtdesc fmtdesc;
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/* bytes per pixel */
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int bpp;
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};
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struct vpfe_std_info {
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int active_pixels;
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int active_lines;
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/* current frame format */
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int frame_format;
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};
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struct vpfe_route {
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u32 input;
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u32 output;
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};
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struct vpfe_subdev_info {
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/* Sub device group id */
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int grp_id;
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/* inputs available at the sub device */
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struct v4l2_input inputs[VPFE_MAX_INPUTS];
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/* Sub dev routing information for each input */
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struct vpfe_route *routes;
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/* check if sub dev supports routing */
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int can_route;
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/* ccdc bus/interface configuration */
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struct vpfe_hw_if_param vpfe_param;
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struct v4l2_subdev *sd;
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};
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struct vpfe_config {
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/* information about each subdev */
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struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV];
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/* Flat array, arranged in groups */
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struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV];
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};
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struct vpfe_cap_buffer {
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struct vb2_v4l2_buffer vb;
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struct list_head list;
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};
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enum ccdc_pixfmt {
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CCDC_PIXFMT_RAW = 0,
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CCDC_PIXFMT_YCBCR_16BIT,
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CCDC_PIXFMT_YCBCR_8BIT,
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};
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enum ccdc_frmfmt {
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CCDC_FRMFMT_PROGRESSIVE = 0,
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CCDC_FRMFMT_INTERLACED,
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};
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/* PIXEL ORDER IN MEMORY from LSB to MSB */
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/* only applicable for 8-bit input mode */
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enum ccdc_pixorder {
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CCDC_PIXORDER_YCBYCR,
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CCDC_PIXORDER_CBYCRY,
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};
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enum ccdc_buftype {
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CCDC_BUFTYPE_FLD_INTERLEAVED,
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CCDC_BUFTYPE_FLD_SEPARATED
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};
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/* returns the highest bit used for the gamma */
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static inline u8 ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width)
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{
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return 15 - width;
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}
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/* returns the highest bit used for this data size */
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static inline u8 ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz)
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{
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return sz == VPFE_CCDC_DATA_8BITS ? 7 : 15 - sz;
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}
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/* Structure for CCDC configuration parameters for raw capture mode */
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struct ccdc_params_raw {
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/* pixel format */
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enum ccdc_pixfmt pix_fmt;
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/* progressive or interlaced frame */
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enum ccdc_frmfmt frm_fmt;
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struct v4l2_rect win;
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/* Current Format Bytes Per Pixels */
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unsigned int bytesperpixel;
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/* Current Format Bytes per Lines
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* (Aligned to 32 bytes) used for HORZ_INFO
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*/
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unsigned int bytesperline;
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/* field id polarity */
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enum vpfe_pin_pol fid_pol;
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/* vertical sync polarity */
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enum vpfe_pin_pol vd_pol;
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/* horizontal sync polarity */
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enum vpfe_pin_pol hd_pol;
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/* interleaved or separated fields */
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enum ccdc_buftype buf_type;
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/*
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* enable to store the image in inverse
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* order in memory(bottom to top)
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*/
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unsigned char image_invert_enable;
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/* configurable parameters */
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struct vpfe_ccdc_config_params_raw config_params;
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};
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struct ccdc_params_ycbcr {
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/* pixel format */
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enum ccdc_pixfmt pix_fmt;
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/* progressive or interlaced frame */
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enum ccdc_frmfmt frm_fmt;
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struct v4l2_rect win;
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/* Current Format Bytes Per Pixels */
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unsigned int bytesperpixel;
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/* Current Format Bytes per Lines
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* (Aligned to 32 bytes) used for HORZ_INFO
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*/
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unsigned int bytesperline;
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/* field id polarity */
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enum vpfe_pin_pol fid_pol;
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/* vertical sync polarity */
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enum vpfe_pin_pol vd_pol;
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/* horizontal sync polarity */
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enum vpfe_pin_pol hd_pol;
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/* enable BT.656 embedded sync mode */
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int bt656_enable;
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/* cb:y:cr:y or y:cb:y:cr in memory */
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enum ccdc_pixorder pix_order;
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/* interleaved or separated fields */
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enum ccdc_buftype buf_type;
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};
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/*
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* CCDC operational configuration
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*/
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struct ccdc_config {
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/* CCDC interface type */
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enum vpfe_hw_if_type if_type;
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/* Raw Bayer configuration */
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struct ccdc_params_raw bayer;
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/* YCbCr configuration */
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struct ccdc_params_ycbcr ycbcr;
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/* ccdc base address */
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void __iomem *base_addr;
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};
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struct vpfe_ccdc {
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struct ccdc_config ccdc_cfg;
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u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)];
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};
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struct vpfe_device {
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/* V4l2 specific parameters */
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/* Identifies video device for this channel */
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struct video_device video_dev;
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/* sub devices */
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struct v4l2_subdev **sd;
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/* vpfe cfg */
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struct vpfe_config *cfg;
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/* V4l2 device */
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struct v4l2_device v4l2_dev;
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/* parent device */
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struct device *pdev;
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/* subdevice async Notifier */
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struct v4l2_async_notifier notifier;
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/* Indicates id of the field which is being displayed */
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unsigned field;
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unsigned sequence;
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/* current interface type */
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struct vpfe_hw_if_param vpfe_if_params;
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/* ptr to currently selected sub device */
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struct vpfe_subdev_info *current_subdev;
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/* current input at the sub device */
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int current_input;
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/* Keeps track of the information about the standard */
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struct vpfe_std_info std_info;
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/* std index into std table */
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int std_index;
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/* IRQs used when CCDC output to SDRAM */
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unsigned int irq;
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/* Pointer pointing to current v4l2_buffer */
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struct vpfe_cap_buffer *cur_frm;
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/* Pointer pointing to next v4l2_buffer */
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struct vpfe_cap_buffer *next_frm;
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/* Used to store pixel format */
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struct v4l2_format fmt;
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/* Used to store current bytes per pixel based on current format */
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unsigned int bpp;
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/*
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* used when IMP is chained to store the crop window which
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* is different from the image window
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*/
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struct v4l2_rect crop;
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/* Buffer queue used in video-buf */
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struct vb2_queue buffer_queue;
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/* Queue of filled frames */
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struct list_head dma_queue;
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/* IRQ lock for DMA queue */
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spinlock_t dma_queue_lock;
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/* lock used to access this structure */
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struct mutex lock;
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/*
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* offset where second field starts from the starting of the
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* buffer for field separated YCbCr formats
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*/
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u32 field_off;
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struct vpfe_ccdc ccdc;
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};
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#endif /* AM437X_VPFE_H */
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