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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
   4  *
   5  * Benoit Parrot <bparrot@ti.com>
   6  * Lad, Prabhakar <prabhakar.csengg@gmail.com>
   7  */
   8
   9 #ifndef AM437X_VPFE_H
  10 #define AM437X_VPFE_H
  11
  12 #include <linux/am437x-vpfe.h>
  13 #include <linux/clk.h>
  14 #include <linux/completion.h>
  15 #include <linux/device.h>
  16 #include <linux/io.h>
  17 #include <linux/i2c.h>
  18 #include <linux/videodev2.h>
  19
  20 #include <media/v4l2-dev.h>
  21 #include <media/v4l2-device.h>
  22 #include <media/v4l2-ioctl.h>
  23 #include <media/videobuf2-v4l2.h>
  24 #include <media/videobuf2-dma-contig.h>
  25
  26 #include "am437x-vpfe_regs.h"
  27
  28 enum vpfe_pin_pol {
  29         VPFE_PINPOL_POSITIVE = 0,
  30         VPFE_PINPOL_NEGATIVE,
  31 };
  32
  33 enum vpfe_hw_if_type {
  34         /* Raw Bayer */
  35         VPFE_RAW_BAYER = 0,
  36         /* BT656 - 8 bit */
  37         VPFE_BT656,
  38         /* BT656 - 10 bit */
  39         VPFE_BT656_10BIT,
  40         /* YCbCr - 8 bit with external sync */
  41         VPFE_YCBCR_SYNC_8,
  42         /* YCbCr - 16 bit with external sync */
  43         VPFE_YCBCR_SYNC_16,
  44 };
  45
  46 /* interface description */
  47 struct vpfe_hw_if_param {
  48         enum vpfe_hw_if_type if_type;
  49         enum vpfe_pin_pol hdpol;
  50         enum vpfe_pin_pol vdpol;
  51         unsigned int bus_width;
  52 };
  53
  54 #define VPFE_MAX_SUBDEV         1
  55 #define VPFE_MAX_INPUTS         1
  56
  57 struct vpfe_std_info {
  58         int active_pixels;
  59         int active_lines;
  60         /* current frame format */
  61         int frame_format;
  62 };
  63
  64 struct vpfe_route {
  65         u32 input;
  66         u32 output;
  67 };
  68
  69 struct vpfe_subdev_info {
  70         /* Sub device group id */
  71         int grp_id;
  72         /* inputs available at the sub device */
  73         struct v4l2_input inputs[VPFE_MAX_INPUTS];
  74         /* Sub dev routing information for each input */
  75         struct vpfe_route *routes;
  76         /* check if sub dev supports routing */
  77         int can_route;
  78         /* ccdc bus/interface configuration */
  79         struct vpfe_hw_if_param vpfe_param;
  80         struct v4l2_subdev *sd;
  81 };
  82
  83 struct vpfe_config {
  84         /* information about each subdev */
  85         struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV];
  86         /* Flat array, arranged in groups */
  87         struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV];
  88 };
  89
  90 struct vpfe_cap_buffer {
  91         struct vb2_v4l2_buffer vb;
  92         struct list_head list;
  93 };
  94
  95 enum ccdc_pixfmt {
  96         CCDC_PIXFMT_RAW = 0,
  97         CCDC_PIXFMT_YCBCR_16BIT,
  98         CCDC_PIXFMT_YCBCR_8BIT,
  99 };
 100
 101 enum ccdc_frmfmt {
 102         CCDC_FRMFMT_PROGRESSIVE = 0,
 103         CCDC_FRMFMT_INTERLACED,
 104 };
 105
 106 /* PIXEL ORDER IN MEMORY from LSB to MSB */
 107 /* only applicable for 8-bit input mode  */
 108 enum ccdc_pixorder {
 109         CCDC_PIXORDER_YCBYCR,
 110         CCDC_PIXORDER_CBYCRY,
 111 };
 112
 113 enum ccdc_buftype {
 114         CCDC_BUFTYPE_FLD_INTERLEAVED,
 115         CCDC_BUFTYPE_FLD_SEPARATED
 116 };
 117
 118
 119 /* returns the highest bit used for the gamma */
 120 static inline u8 ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width)
 121 {
 122         return 15 - width;
 123 }
 124
 125 /* returns the highest bit used for this data size */
 126 static inline u8 ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz)
 127 {
 128         return sz == VPFE_CCDC_DATA_8BITS ? 7 : 15 - sz;
 129 }
 130
 131 /* Structure for CCDC configuration parameters for raw capture mode */
 132 struct ccdc_params_raw {
 133         /* pixel format */
 134         enum ccdc_pixfmt pix_fmt;
 135         /* progressive or interlaced frame */
 136         enum ccdc_frmfmt frm_fmt;
 137         struct v4l2_rect win;
 138         /* Current Format Bytes Per Pixels */
 139         unsigned int bytesperpixel;
 140         /* Current Format Bytes per Lines
 141          * (Aligned to 32 bytes) used for HORZ_INFO
 142          */
 143         unsigned int bytesperline;
 144         /* field id polarity */
 145         enum vpfe_pin_pol fid_pol;
 146         /* vertical sync polarity */
 147         enum vpfe_pin_pol vd_pol;
 148         /* horizontal sync polarity */
 149         enum vpfe_pin_pol hd_pol;
 150         /* interleaved or separated fields */
 151         enum ccdc_buftype buf_type;
 152         /*
 153          * enable to store the image in inverse
 154          * order in memory(bottom to top)
 155          */
 156         unsigned char image_invert_enable;
 157         /* configurable parameters */
 158         struct vpfe_ccdc_config_params_raw config_params;
 159 };
 160
 161 struct ccdc_params_ycbcr {
 162         /* pixel format */
 163         enum ccdc_pixfmt pix_fmt;
 164         /* progressive or interlaced frame */
 165         enum ccdc_frmfmt frm_fmt;
 166         struct v4l2_rect win;
 167         /* Current Format Bytes Per Pixels */
 168         unsigned int bytesperpixel;
 169         /* Current Format Bytes per Lines
 170          * (Aligned to 32 bytes) used for HORZ_INFO
 171          */
 172         unsigned int bytesperline;
 173         /* field id polarity */
 174         enum vpfe_pin_pol fid_pol;
 175         /* vertical sync polarity */
 176         enum vpfe_pin_pol vd_pol;
 177         /* horizontal sync polarity */
 178         enum vpfe_pin_pol hd_pol;
 179         /* enable BT.656 embedded sync mode */
 180         int bt656_enable;
 181         /* cb:y:cr:y or y:cb:y:cr in memory */
 182         enum ccdc_pixorder pix_order;
 183         /* interleaved or separated fields  */
 184         enum ccdc_buftype buf_type;
 185 };
 186
 187 /*
 188  * CCDC operational configuration
 189  */
 190 struct ccdc_config {
 191         /* CCDC interface type */
 192         enum vpfe_hw_if_type if_type;
 193         /* Raw Bayer configuration */
 194         struct ccdc_params_raw bayer;
 195         /* YCbCr configuration */
 196         struct ccdc_params_ycbcr ycbcr;
 197         /* ccdc base address */
 198         void __iomem *base_addr;
 199 };
 200
 201 struct vpfe_ccdc {
 202         struct ccdc_config ccdc_cfg;
 203         u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)];
 204 };
 205
 206 /*
 207  * struct vpfe_fmt - VPFE media bus format information
 208  * fourcc: V4L2 pixel format code
 209  * code: V4L2 media bus format code
 210  * bitsperpixel: Bits per pixel over the bus
 211  */
 212 struct vpfe_fmt {
 213         u32 fourcc;
 214         u32 code;
 215         u32 bitsperpixel;
 216 };
 217
 218 /*
 219  * When formats[] is modified make sure to adjust this value also.
 220  * Expect compile time warnings if VPFE_NUM_FORMATS is smaller then
 221  * the number of elements in formats[].
 222  */
 223 #define VPFE_NUM_FORMATS        10
 224
 225 struct vpfe_device {
 226         /* V4l2 specific parameters */
 227         /* Identifies video device for this channel */
 228         struct video_device video_dev;
 229         /* sub devices */
 230         struct v4l2_subdev **sd;
 231         /* vpfe cfg */
 232         struct vpfe_config *cfg;
 233         /* V4l2 device */
 234         struct v4l2_device v4l2_dev;
 235         /* parent device */
 236         struct device *pdev;
 237         /* subdevice async Notifier */
 238         struct v4l2_async_notifier notifier;
 239         /* Indicates id of the field which is being displayed */
 240         unsigned field;
 241         unsigned sequence;
 242         /* current interface type */
 243         struct vpfe_hw_if_param vpfe_if_params;
 244         /* ptr to currently selected sub device */
 245         struct vpfe_subdev_info *current_subdev;
 246         /* current input at the sub device */
 247         int current_input;
 248         /* Keeps track of the information about the standard */
 249         struct vpfe_std_info std_info;
 250         /* std index into std table */
 251         int std_index;
 252         /* IRQs used when CCDC output to SDRAM */
 253         unsigned int irq;
 254         /* Pointer pointing to current v4l2_buffer */
 255         struct vpfe_cap_buffer *cur_frm;
 256         /* Pointer pointing to next v4l2_buffer */
 257         struct vpfe_cap_buffer *next_frm;
 258         /* Used to store pixel format */
 259         struct v4l2_format fmt;
 260         /* Used to keep a reference to the current vpfe_fmt */
 261         struct vpfe_fmt *current_vpfe_fmt;
 262         struct vpfe_fmt *active_fmt[VPFE_NUM_FORMATS];
 263         unsigned int num_active_fmt;
 264
 265         /*
 266          * used when IMP is chained to store the crop window which
 267          * is different from the image window
 268          */
 269         struct v4l2_rect crop;
 270         /* Buffer queue used in video-buf */
 271         struct vb2_queue buffer_queue;
 272         /* Queue of filled frames */
 273         struct list_head dma_queue;
 274         /* IRQ lock for DMA queue */
 275         spinlock_t dma_queue_lock;
 276         /* lock used to access this structure */
 277         struct mutex lock;
 278         /*
 279          * offset where second field starts from the starting of the
 280          * buffer for field separated YCbCr formats
 281          */
 282         u32 field_off;
 283         struct vpfe_ccdc ccdc;
 284         int stopping;
 285         struct completion capture_stop;
 286 };
 287
 288 #endif  /* AM437X_VPFE_H */