drivers/media/platform/coda/coda.h

   1 /*
   2  * Coda multi-standard codec IP
   3  *
   4  * Copyright (C) 2012 Vista Silicon S.L.
   5  *    Javier Martin, <javier.martin@vista-silicon.com>
   6  *    Xavier Duret
   7  * Copyright (C) 2012-2014 Philipp Zabel, Pengutronix
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  */
  14
  15 #include <linux/debugfs.h>
  16 #include <linux/irqreturn.h>
  17 #include <linux/mutex.h>
  18 #include <linux/kfifo.h>
  19 #include <linux/videodev2.h>
  20
  21 #include <media/v4l2-ctrls.h>
  22 #include <media/v4l2-device.h>
  23 #include <media/v4l2-fh.h>
  24 #include <media/videobuf2-core.h>
  25
  26 #include "coda_regs.h"
  27
  28 #define CODA_MAX_FRAMEBUFFERS   8
  29 #define CODA_MAX_FRAME_SIZE     0x100000
  30 #define FMO_SLICE_SAVE_BUF_SIZE (32)
  31
  32 enum {
  33         V4L2_M2M_SRC = 0,
  34         V4L2_M2M_DST = 1,
  35 };
  36
  37 enum coda_inst_type {
  38         CODA_INST_ENCODER,
  39         CODA_INST_DECODER,
  40 };
  41
  42 enum coda_product {
  43         CODA_DX6 = 0xf001,
  44         CODA_7541 = 0xf012,
  45         CODA_960 = 0xf020,
  46 };
  47
  48 struct coda_video_device;
  49
  50 struct coda_devtype {
  51         char                    *firmware;
  52         enum coda_product       product;
  53         const struct coda_codec *codecs;
  54         unsigned int            num_codecs;
  55         const struct coda_video_device **vdevs;
  56         unsigned int            num_vdevs;
  57         size_t                  workbuf_size;
  58         size_t                  tempbuf_size;
  59         size_t                  iram_size;
  60 };
  61
  62 struct coda_aux_buf {
  63         void                    *vaddr;
  64         dma_addr_t              paddr;
  65         u32                     size;
  66         struct debugfs_blob_wrapper blob;
  67         struct dentry           *dentry;
  68 };
  69
  70 struct coda_dev {
  71         struct v4l2_device      v4l2_dev;
  72         struct video_device     vfd[5];
  73         struct platform_device  *plat_dev;
  74         const struct coda_devtype *devtype;
  75
  76         void __iomem            *regs_base;
  77         struct clk              *clk_per;
  78         struct clk              *clk_ahb;
  79         struct reset_control    *rstc;
  80
  81         struct coda_aux_buf     codebuf;
  82         struct coda_aux_buf     tempbuf;
  83         struct coda_aux_buf     workbuf;
  84         struct gen_pool         *iram_pool;
  85         struct coda_aux_buf     iram;
  86
  87         spinlock_t              irqlock;
  88         struct mutex            dev_mutex;
  89         struct mutex            coda_mutex;
  90         struct workqueue_struct *workqueue;
  91         struct v4l2_m2m_dev     *m2m_dev;
  92         struct vb2_alloc_ctx    *alloc_ctx;
  93         struct list_head        instances;
  94         unsigned long           instance_mask;
  95         struct dentry           *debugfs_root;
  96 };
  97
  98 struct coda_codec {
  99         u32 mode;
 100         u32 src_fourcc;
 101         u32 dst_fourcc;
 102         u32 max_w;
 103         u32 max_h;
 104 };
 105
 106 struct coda_huff_tab;
 107
 108 struct coda_params {
 109         u8                      rot_mode;
 110         u8                      h264_intra_qp;
 111         u8                      h264_inter_qp;
 112         u8                      h264_min_qp;
 113         u8                      h264_max_qp;
 114         u8                      h264_deblk_enabled;
 115         u8                      h264_deblk_alpha;
 116         u8                      h264_deblk_beta;
 117         u8                      mpeg4_intra_qp;
 118         u8                      mpeg4_inter_qp;
 119         u8                      gop_size;
 120         int                     intra_refresh;
 121         u8                      jpeg_quality;
 122         u8                      jpeg_restart_interval;
 123         u8                      *jpeg_qmat_tab[3];
 124         int                     codec_mode;
 125         int                     codec_mode_aux;
 126         enum v4l2_mpeg_video_multi_slice_mode slice_mode;
 127         u32                     framerate;
 128         u16                     bitrate;
 129         u32                     slice_max_bits;
 130         u32                     slice_max_mb;
 131 };
 132
 133 struct coda_buffer_meta {
 134         struct list_head        list;
 135         u32                     sequence;
 136         struct v4l2_timecode    timecode;
 137         struct timeval          timestamp;
 138         u32                     start;
 139         u32                     end;
 140 };
 141
 142 /* Per-queue, driver-specific private data */
 143 struct coda_q_data {
 144         unsigned int            width;
 145         unsigned int            height;
 146         unsigned int            bytesperline;
 147         unsigned int            sizeimage;
 148         unsigned int            fourcc;
 149         struct v4l2_rect        rect;
 150 };
 151
 152 struct coda_iram_info {
 153         u32             axi_sram_use;
 154         phys_addr_t     buf_bit_use;
 155         phys_addr_t     buf_ip_ac_dc_use;
 156         phys_addr_t     buf_dbk_y_use;
 157         phys_addr_t     buf_dbk_c_use;
 158         phys_addr_t     buf_ovl_use;
 159         phys_addr_t     buf_btp_use;
 160         phys_addr_t     search_ram_paddr;
 161         int             search_ram_size;
 162         int             remaining;
 163         phys_addr_t     next_paddr;
 164 };
 165
 166 struct gdi_tiled_map {
 167         int xy2ca_map[16];
 168         int xy2ba_map[16];
 169         int xy2ra_map[16];
 170         int rbc2axi_map[32];
 171         int xy2rbc_config;
 172         int map_type;
 173 #define GDI_LINEAR_FRAME_MAP 0
 174 };
 175
 176 struct coda_ctx;
 177
 178 struct coda_context_ops {
 179         int (*queue_init)(void *priv, struct vb2_queue *src_vq,
 180                           struct vb2_queue *dst_vq);
 181         int (*start_streaming)(struct coda_ctx *ctx);
 182         int (*prepare_run)(struct coda_ctx *ctx);
 183         void (*finish_run)(struct coda_ctx *ctx);
 184         void (*seq_end_work)(struct work_struct *work);
 185         void (*release)(struct coda_ctx *ctx);
 186 };
 187
 188 struct coda_ctx {
 189         struct coda_dev                 *dev;
 190         struct mutex                    buffer_mutex;
 191         struct list_head                list;
 192         struct work_struct              pic_run_work;
 193         struct work_struct              seq_end_work;
 194         struct completion               completion;
 195         const struct coda_video_device  *cvd;
 196         const struct coda_context_ops   *ops;
 197         int                             aborting;
 198         int                             initialized;
 199         int                             streamon_out;
 200         int                             streamon_cap;
 201         u32                             qsequence;
 202         u32                             osequence;
 203         u32                             sequence_offset;
 204         struct coda_q_data              q_data[2];
 205         enum coda_inst_type             inst_type;
 206         const struct coda_codec         *codec;
 207         enum v4l2_colorspace            colorspace;
 208         struct coda_params              params;
 209         struct v4l2_ctrl_handler        ctrls;
 210         struct v4l2_fh                  fh;
 211         int                             gopcounter;
 212         int                             runcounter;
 213         char                            vpu_header[3][64];
 214         int                             vpu_header_size[3];
 215         struct kfifo                    bitstream_fifo;
 216         struct mutex                    bitstream_mutex;
 217         struct coda_aux_buf             bitstream;
 218         bool                            hold;
 219         struct coda_aux_buf             parabuf;
 220         struct coda_aux_buf             psbuf;
 221         struct coda_aux_buf             slicebuf;
 222         struct coda_aux_buf             internal_frames[CODA_MAX_FRAMEBUFFERS];
 223         u32                             frame_types[CODA_MAX_FRAMEBUFFERS];
 224         struct coda_buffer_meta         frame_metas[CODA_MAX_FRAMEBUFFERS];
 225         u32                             frame_errors[CODA_MAX_FRAMEBUFFERS];
 226         struct list_head                buffer_meta_list;
 227         struct coda_aux_buf             workbuf;
 228         int                             num_internal_frames;
 229         int                             idx;
 230         int                             reg_idx;
 231         struct coda_iram_info           iram_info;
 232         struct gdi_tiled_map            tiled_map;
 233         u32                             bit_stream_param;
 234         u32                             frm_dis_flg;
 235         u32                             frame_mem_ctrl;
 236         int                             display_idx;
 237         struct dentry                   *debugfs_entry;
 238         bool                            use_bit;
 239 };
 240
 241 extern int coda_debug;
 242
 243 void coda_write(struct coda_dev *dev, u32 data, u32 reg);
 244 unsigned int coda_read(struct coda_dev *dev, u32 reg);
 245 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
 246                      struct vb2_buffer *buf, unsigned int reg_y);
 247
 248 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
 249                        size_t size, const char *name, struct dentry *parent);
 250 void coda_free_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf);
 251
 252 static inline int coda_alloc_context_buf(struct coda_ctx *ctx,
 253                                          struct coda_aux_buf *buf, size_t size,
 254                                          const char *name)
 255 {
 256         return coda_alloc_aux_buf(ctx->dev, buf, size, name, ctx->debugfs_entry);
 257 }
 258
 259 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
 260                             struct vb2_queue *dst_vq);
 261 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
 262                             struct vb2_queue *dst_vq);
 263
 264 int coda_hw_reset(struct coda_ctx *ctx);
 265
 266 void coda_fill_bitstream(struct coda_ctx *ctx);
 267
 268 void coda_set_gdi_regs(struct coda_ctx *ctx);
 269
 270 static inline struct coda_q_data *get_q_data(struct coda_ctx *ctx,
 271                                              enum v4l2_buf_type type)
 272 {
 273         switch (type) {
 274         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 275                 return &(ctx->q_data[V4L2_M2M_SRC]);
 276         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 277                 return &(ctx->q_data[V4L2_M2M_DST]);
 278         default:
 279                 return NULL;
 280         }
 281 }
 282
 283 const char *coda_product_name(int product);
 284
 285 int coda_check_firmware(struct coda_dev *dev);
 286
 287 static inline unsigned int coda_get_bitstream_payload(struct coda_ctx *ctx)
 288 {
 289         return kfifo_len(&ctx->bitstream_fifo);
 290 }
 291
 292 void coda_bit_stream_end_flag(struct coda_ctx *ctx);
 293
 294 int coda_h264_padding(int size, char *p);
 295
 296 bool coda_jpeg_check_buffer(struct coda_ctx *ctx, struct vb2_buffer *vb);
 297 int coda_jpeg_write_tables(struct coda_ctx *ctx);
 298 void coda_set_jpeg_compression_quality(struct coda_ctx *ctx, int quality);
 299
 300 extern const struct coda_context_ops coda_bit_encode_ops;
 301 extern const struct coda_context_ops coda_bit_decode_ops;
 302
 303 irqreturn_t coda_irq_handler(int irq, void *data);