drivers/media/platform/am437x/am437x-vpfe.h

   1 /*
   2  * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
   3  *
   4  * Benoit Parrot <bparrot@ti.com>
   5  * Lad, Prabhakar <prabhakar.csengg@gmail.com>
   6  *
   7  * This program is free software; you may redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  12  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  13  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  14  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  15  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  16  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  17  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  18  * SOFTWARE.
  19  */
  20
  21 #ifndef AM437X_VPFE_H
  22 #define AM437X_VPFE_H
  23
  24 #include <linux/am437x-vpfe.h>
  25 #include <linux/clk.h>
  26 #include <linux/device.h>
  27 #include <linux/io.h>
  28 #include <linux/i2c.h>
  29 #include <linux/videodev2.h>
  30
  31 #include <media/v4l2-dev.h>
  32 #include <media/v4l2-device.h>
  33 #include <media/v4l2-ioctl.h>
  34 #include <media/videobuf2-v4l2.h>
  35 #include <media/videobuf2-dma-contig.h>
  36
  37 #include "am437x-vpfe_regs.h"
  38
  39 enum vpfe_pin_pol {
  40         VPFE_PINPOL_POSITIVE = 0,
  41         VPFE_PINPOL_NEGATIVE,
  42 };
  43
  44 enum vpfe_hw_if_type {
  45         /* Raw Bayer */
  46         VPFE_RAW_BAYER = 0,
  47         /* BT656 - 8 bit */
  48         VPFE_BT656,
  49         /* BT656 - 10 bit */
  50         VPFE_BT656_10BIT,
  51         /* YCbCr - 8 bit with external sync */
  52         VPFE_YCBCR_SYNC_8,
  53         /* YCbCr - 16 bit with external sync */
  54         VPFE_YCBCR_SYNC_16,
  55 };
  56
  57 /* interface description */
  58 struct vpfe_hw_if_param {
  59         enum vpfe_hw_if_type if_type;
  60         enum vpfe_pin_pol hdpol;
  61         enum vpfe_pin_pol vdpol;
  62         unsigned int bus_width;
  63 };
  64
  65 #define VPFE_MAX_SUBDEV         1
  66 #define VPFE_MAX_INPUTS         1
  67
  68 struct vpfe_pixel_format {
  69         struct v4l2_fmtdesc fmtdesc;
  70         /* bytes per pixel */
  71         int bpp;
  72 };
  73
  74 struct vpfe_std_info {
  75         int active_pixels;
  76         int active_lines;
  77         /* current frame format */
  78         int frame_format;
  79 };
  80
  81 struct vpfe_route {
  82         u32 input;
  83         u32 output;
  84 };
  85
  86 struct vpfe_subdev_info {
  87         /* Sub device group id */
  88         int grp_id;
  89         /* inputs available at the sub device */
  90         struct v4l2_input inputs[VPFE_MAX_INPUTS];
  91         /* Sub dev routing information for each input */
  92         struct vpfe_route *routes;
  93         /* check if sub dev supports routing */
  94         int can_route;
  95         /* ccdc bus/interface configuration */
  96         struct vpfe_hw_if_param vpfe_param;
  97         struct v4l2_subdev *sd;
  98 };
  99
 100 struct vpfe_config {
 101         /* information about each subdev */
 102         struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV];
 103         /* Flat array, arranged in groups */
 104         struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV];
 105 };
 106
 107 struct vpfe_cap_buffer {
 108         struct vb2_v4l2_buffer vb;
 109         struct list_head list;
 110 };
 111
 112 enum ccdc_pixfmt {
 113         CCDC_PIXFMT_RAW = 0,
 114         CCDC_PIXFMT_YCBCR_16BIT,
 115         CCDC_PIXFMT_YCBCR_8BIT,
 116 };
 117
 118 enum ccdc_frmfmt {
 119         CCDC_FRMFMT_PROGRESSIVE = 0,
 120         CCDC_FRMFMT_INTERLACED,
 121 };
 122
 123 /* PIXEL ORDER IN MEMORY from LSB to MSB */
 124 /* only applicable for 8-bit input mode  */
 125 enum ccdc_pixorder {
 126         CCDC_PIXORDER_YCBYCR,
 127         CCDC_PIXORDER_CBYCRY,
 128 };
 129
 130 enum ccdc_buftype {
 131         CCDC_BUFTYPE_FLD_INTERLEAVED,
 132         CCDC_BUFTYPE_FLD_SEPARATED
 133 };
 134
 135
 136 /* returns the highest bit used for the gamma */
 137 static inline u8 ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width)
 138 {
 139         return 15 - width;
 140 }
 141
 142 /* returns the highest bit used for this data size */
 143 static inline u8 ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz)
 144 {
 145         return sz == VPFE_CCDC_DATA_8BITS ? 7 : 15 - sz;
 146 }
 147
 148 /* Structure for CCDC configuration parameters for raw capture mode */
 149 struct ccdc_params_raw {
 150         /* pixel format */
 151         enum ccdc_pixfmt pix_fmt;
 152         /* progressive or interlaced frame */
 153         enum ccdc_frmfmt frm_fmt;
 154         struct v4l2_rect win;
 155         /* Current Format Bytes Per Pixels */
 156         unsigned int bytesperpixel;
 157         /* Current Format Bytes per Lines
 158          * (Aligned to 32 bytes) used for HORZ_INFO
 159          */
 160         unsigned int bytesperline;
 161         /* field id polarity */
 162         enum vpfe_pin_pol fid_pol;
 163         /* vertical sync polarity */
 164         enum vpfe_pin_pol vd_pol;
 165         /* horizontal sync polarity */
 166         enum vpfe_pin_pol hd_pol;
 167         /* interleaved or separated fields */
 168         enum ccdc_buftype buf_type;
 169         /*
 170          * enable to store the image in inverse
 171          * order in memory(bottom to top)
 172          */
 173         unsigned char image_invert_enable;
 174         /* configurable parameters */
 175         struct vpfe_ccdc_config_params_raw config_params;
 176 };
 177
 178 struct ccdc_params_ycbcr {
 179         /* pixel format */
 180         enum ccdc_pixfmt pix_fmt;
 181         /* progressive or interlaced frame */
 182         enum ccdc_frmfmt frm_fmt;
 183         struct v4l2_rect win;
 184         /* Current Format Bytes Per Pixels */
 185         unsigned int bytesperpixel;
 186         /* Current Format Bytes per Lines
 187          * (Aligned to 32 bytes) used for HORZ_INFO
 188          */
 189         unsigned int bytesperline;
 190         /* field id polarity */
 191         enum vpfe_pin_pol fid_pol;
 192         /* vertical sync polarity */
 193         enum vpfe_pin_pol vd_pol;
 194         /* horizontal sync polarity */
 195         enum vpfe_pin_pol hd_pol;
 196         /* enable BT.656 embedded sync mode */
 197         int bt656_enable;
 198         /* cb:y:cr:y or y:cb:y:cr in memory */
 199         enum ccdc_pixorder pix_order;
 200         /* interleaved or separated fields  */
 201         enum ccdc_buftype buf_type;
 202 };
 203
 204 /*
 205  * CCDC operational configuration
 206  */
 207 struct ccdc_config {
 208         /* CCDC interface type */
 209         enum vpfe_hw_if_type if_type;
 210         /* Raw Bayer configuration */
 211         struct ccdc_params_raw bayer;
 212         /* YCbCr configuration */
 213         struct ccdc_params_ycbcr ycbcr;
 214         /* ccdc base address */
 215         void __iomem *base_addr;
 216 };
 217
 218 struct vpfe_ccdc {
 219         struct ccdc_config ccdc_cfg;
 220         u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)];
 221 };
 222
 223 struct vpfe_device {
 224         /* V4l2 specific parameters */
 225         /* Identifies video device for this channel */
 226         struct video_device video_dev;
 227         /* sub devices */
 228         struct v4l2_subdev **sd;
 229         /* vpfe cfg */
 230         struct vpfe_config *cfg;
 231         /* V4l2 device */
 232         struct v4l2_device v4l2_dev;
 233         /* parent device */
 234         struct device *pdev;
 235         /* subdevice async Notifier */
 236         struct v4l2_async_notifier notifier;
 237         /* Indicates id of the field which is being displayed */
 238         unsigned field;
 239         unsigned sequence;
 240         /* current interface type */
 241         struct vpfe_hw_if_param vpfe_if_params;
 242         /* ptr to currently selected sub device */
 243         struct vpfe_subdev_info *current_subdev;
 244         /* current input at the sub device */
 245         int current_input;
 246         /* Keeps track of the information about the standard */
 247         struct vpfe_std_info std_info;
 248         /* std index into std table */
 249         int std_index;
 250         /* IRQs used when CCDC output to SDRAM */
 251         unsigned int irq;
 252         /* Pointer pointing to current v4l2_buffer */
 253         struct vpfe_cap_buffer *cur_frm;
 254         /* Pointer pointing to next v4l2_buffer */
 255         struct vpfe_cap_buffer *next_frm;
 256         /* Used to store pixel format */
 257         struct v4l2_format fmt;
 258         /* Used to store current bytes per pixel based on current format */
 259         unsigned int bpp;
 260         /*
 261          * used when IMP is chained to store the crop window which
 262          * is different from the image window
 263          */
 264         struct v4l2_rect crop;
 265         /* Buffer queue used in video-buf */
 266         struct vb2_queue buffer_queue;
 267         /* Queue of filled frames */
 268         struct list_head dma_queue;
 269         /* IRQ lock for DMA queue */
 270         spinlock_t dma_queue_lock;
 271         /* lock used to access this structure */
 272         struct mutex lock;
 273         /*
 274          * offset where second field starts from the starting of the
 275          * buffer for field separated YCbCr formats
 276          */
 277         u32 field_off;
 278         struct vpfe_ccdc ccdc;
 279 };
 280
 281 #endif  /* AM437X_VPFE_H */