drivers/media/platform/exynos4-is/fimc-core.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
   4  */
   5
   6 #ifndef FIMC_CORE_H_
   7 #define FIMC_CORE_H_
   8
   9 /*#define DEBUG*/
  10
  11 #include <linux/platform_device.h>
  12 #include <linux/regmap.h>
  13 #include <linux/sched.h>
  14 #include <linux/spinlock.h>
  15 #include <linux/mfd/syscon.h>
  16 #include <linux/types.h>
  17 #include <linux/videodev2.h>
  18 #include <linux/io.h>
  19 #include <linux/sizes.h>
  20
  21 #include <media/media-entity.h>
  22 #include <media/videobuf2-v4l2.h>
  23 #include <media/v4l2-ctrls.h>
  24 #include <media/v4l2-device.h>
  25 #include <media/v4l2-mem2mem.h>
  26 #include <media/v4l2-mediabus.h>
  27 #include <media/drv-intf/exynos-fimc.h>
  28
  29 #define dbg(fmt, args...) \
  30         pr_debug("%s:%d: " fmt "\n", __func__, __LINE__, ##args)
  31
  32 /* Time to wait for next frame VSYNC interrupt while stopping operation. */
  33 #define FIMC_SHUTDOWN_TIMEOUT   ((100*HZ)/1000)
  34 #define MAX_FIMC_CLOCKS         2
  35 #define FIMC_DRIVER_NAME        "exynos4-fimc"
  36 #define FIMC_MAX_DEVS           4
  37 #define FIMC_MAX_OUT_BUFS       4
  38 #define SCALER_MAX_HRATIO       64
  39 #define SCALER_MAX_VRATIO       64
  40 #define DMA_MIN_SIZE            8
  41 #define FIMC_CAMIF_MAX_HEIGHT   0x2000
  42 #define FIMC_MAX_JPEG_BUF_SIZE  (10 * SZ_1M)
  43 #define FIMC_MAX_PLANES         3
  44 #define FIMC_PIX_LIMITS_MAX     4
  45 #define FIMC_DEF_MIN_SIZE       16
  46 #define FIMC_DEF_HEIGHT_ALIGN   2
  47 #define FIMC_DEF_HOR_OFFS_ALIGN 1
  48 #define FIMC_DEFAULT_WIDTH      640
  49 #define FIMC_DEFAULT_HEIGHT     480
  50
  51 /* indices to the clocks array */
  52 enum {
  53         CLK_BUS,
  54         CLK_GATE,
  55 };
  56
  57 enum fimc_dev_flags {
  58         ST_LPM,
  59         /* m2m node */
  60         ST_M2M_RUN,
  61         ST_M2M_PEND,
  62         ST_M2M_SUSPENDING,
  63         ST_M2M_SUSPENDED,
  64         /* capture node */
  65         ST_CAPT_PEND,
  66         ST_CAPT_RUN,
  67         ST_CAPT_STREAM,
  68         ST_CAPT_ISP_STREAM,
  69         ST_CAPT_SUSPENDED,
  70         ST_CAPT_SHUT,
  71         ST_CAPT_BUSY,
  72         ST_CAPT_APPLY_CFG,
  73         ST_CAPT_JPEG,
  74 };
  75
  76 #define fimc_m2m_active(dev) test_bit(ST_M2M_RUN, &(dev)->state)
  77 #define fimc_m2m_pending(dev) test_bit(ST_M2M_PEND, &(dev)->state)
  78
  79 #define fimc_capture_running(dev) test_bit(ST_CAPT_RUN, &(dev)->state)
  80 #define fimc_capture_pending(dev) test_bit(ST_CAPT_PEND, &(dev)->state)
  81 #define fimc_capture_busy(dev) test_bit(ST_CAPT_BUSY, &(dev)->state)
  82
  83 enum fimc_datapath {
  84         FIMC_IO_NONE,
  85         FIMC_IO_CAMERA,
  86         FIMC_IO_DMA,
  87         FIMC_IO_LCDFIFO,
  88         FIMC_IO_WRITEBACK,
  89         FIMC_IO_ISP,
  90 };
  91
  92 enum fimc_color_fmt {
  93         FIMC_FMT_RGB444 = 0x10,
  94         FIMC_FMT_RGB555,
  95         FIMC_FMT_RGB565,
  96         FIMC_FMT_RGB666,
  97         FIMC_FMT_RGB888,
  98         FIMC_FMT_RGB30_LOCAL,
  99         FIMC_FMT_YCBCR420 = 0x20,
 100         FIMC_FMT_YCBYCR422,
 101         FIMC_FMT_YCRYCB422,
 102         FIMC_FMT_CBYCRY422,
 103         FIMC_FMT_CRYCBY422,
 104         FIMC_FMT_YCBCR444_LOCAL,
 105         FIMC_FMT_RAW8 = 0x40,
 106         FIMC_FMT_RAW10,
 107         FIMC_FMT_RAW12,
 108         FIMC_FMT_JPEG = 0x80,
 109         FIMC_FMT_YUYV_JPEG = 0x100,
 110 };
 111
 112 #define fimc_fmt_is_user_defined(x) (!!((x) & 0x180))
 113 #define fimc_fmt_is_rgb(x) (!!((x) & 0x10))
 114
 115 #define IS_M2M(__strt) ((__strt) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE || \
 116                         __strt == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 117
 118 /* The hardware context state. */
 119 #define FIMC_PARAMS             (1 << 0)
 120 #define FIMC_COMPOSE            (1 << 1)
 121 #define FIMC_CTX_M2M            (1 << 16)
 122 #define FIMC_CTX_CAP            (1 << 17)
 123 #define FIMC_CTX_SHUT           (1 << 18)
 124
 125 /* Image conversion flags */
 126 #define FIMC_IN_DMA_ACCESS_TILED        (1 << 0)
 127 #define FIMC_IN_DMA_ACCESS_LINEAR       (0 << 0)
 128 #define FIMC_OUT_DMA_ACCESS_TILED       (1 << 1)
 129 #define FIMC_OUT_DMA_ACCESS_LINEAR      (0 << 1)
 130 #define FIMC_SCAN_MODE_PROGRESSIVE      (0 << 2)
 131 #define FIMC_SCAN_MODE_INTERLACED       (1 << 2)
 132 /*
 133  * YCbCr data dynamic range for RGB-YUV color conversion.
 134  * Y/Cb/Cr: (0 ~ 255) */
 135 #define FIMC_COLOR_RANGE_WIDE           (0 << 3)
 136 /* Y (16 ~ 235), Cb/Cr (16 ~ 240) */
 137 #define FIMC_COLOR_RANGE_NARROW         (1 << 3)
 138
 139 /**
 140  * struct fimc_dma_offset - pixel offset information for DMA
 141  * @y_h:        y value horizontal offset
 142  * @y_v:        y value vertical offset
 143  * @cb_h:       cb value horizontal offset
 144  * @cb_v:       cb value vertical offset
 145  * @cr_h:       cr value horizontal offset
 146  * @cr_v:       cr value vertical offset
 147  */
 148 struct fimc_dma_offset {
 149         int     y_h;
 150         int     y_v;
 151         int     cb_h;
 152         int     cb_v;
 153         int     cr_h;
 154         int     cr_v;
 155 };
 156
 157 /**
 158  * struct fimc_effect - color effect information
 159  * @type:       effect type
 160  * @pat_cb:     cr value when type is "arbitrary"
 161  * @pat_cr:     cr value when type is "arbitrary"
 162  */
 163 struct fimc_effect {
 164         u32     type;
 165         u8      pat_cb;
 166         u8      pat_cr;
 167 };
 168
 169 /**
 170  * struct fimc_scaler - the configuration data for FIMC inetrnal scaler
 171  * @scaleup_h:          flag indicating scaling up horizontally
 172  * @scaleup_v:          flag indicating scaling up vertically
 173  * @copy_mode:          flag indicating transparent DMA transfer (no scaling
 174  *                      and color format conversion)
 175  * @enabled:            flag indicating if the scaler is used
 176  * @hfactor:            horizontal shift factor
 177  * @vfactor:            vertical shift factor
 178  * @pre_hratio:         horizontal ratio of the prescaler
 179  * @pre_vratio:         vertical ratio of the prescaler
 180  * @pre_dst_width:      the prescaler's destination width
 181  * @pre_dst_height:     the prescaler's destination height
 182  * @main_hratio:        the main scaler's horizontal ratio
 183  * @main_vratio:        the main scaler's vertical ratio
 184  * @real_width:         source pixel (width - offset)
 185  * @real_height:        source pixel (height - offset)
 186  */
 187 struct fimc_scaler {
 188         unsigned int scaleup_h:1;
 189         unsigned int scaleup_v:1;
 190         unsigned int copy_mode:1;
 191         unsigned int enabled:1;
 192         u32     hfactor;
 193         u32     vfactor;
 194         u32     pre_hratio;
 195         u32     pre_vratio;
 196         u32     pre_dst_width;
 197         u32     pre_dst_height;
 198         u32     main_hratio;
 199         u32     main_vratio;
 200         u32     real_width;
 201         u32     real_height;
 202 };
 203
 204 /**
 205  * struct fimc_addr - the FIMC address set for DMA
 206  * @y:   luminance plane address
 207  * @cb:  Cb plane address
 208  * @cr:  Cr plane address
 209  */
 210 struct fimc_addr {
 211         u32     y;
 212         u32     cb;
 213         u32     cr;
 214 };
 215
 216 /**
 217  * struct fimc_vid_buffer - the driver's video buffer
 218  * @vb:    v4l videobuf buffer
 219  * @list:  linked list structure for buffer queue
 220  * @addr: precalculated DMA address set
 221  * @index: buffer index for the output DMA engine
 222  */
 223 struct fimc_vid_buffer {
 224         struct vb2_v4l2_buffer vb;
 225         struct list_head        list;
 226         struct fimc_addr        addr;
 227         int                     index;
 228 };
 229
 230 /**
 231  * struct fimc_frame - source/target frame properties
 232  * @f_width:    image full width (virtual screen size)
 233  * @f_height:   image full height (virtual screen size)
 234  * @o_width:    original image width as set by S_FMT
 235  * @o_height:   original image height as set by S_FMT
 236  * @offs_h:     image horizontal pixel offset
 237  * @offs_v:     image vertical pixel offset
 238  * @width:      image pixel width
 239  * @height:     image pixel weight
 240  * @payload:    image size in bytes (w x h x bpp)
 241  * @bytesperline: bytesperline value for each plane
 242  * @addr:       image frame buffer DMA addresses
 243  * @dma_offset: DMA offset in bytes
 244  * @fmt:        fimc color format pointer
 245  */
 246 struct fimc_frame {
 247         u32     f_width;
 248         u32     f_height;
 249         u32     o_width;
 250         u32     o_height;
 251         u32     offs_h;
 252         u32     offs_v;
 253         u32     width;
 254         u32     height;
 255         unsigned int            payload[VIDEO_MAX_PLANES];
 256         unsigned int            bytesperline[VIDEO_MAX_PLANES];
 257         struct fimc_addr        addr;
 258         struct fimc_dma_offset  dma_offset;
 259         struct fimc_fmt         *fmt;
 260         u8                      alpha;
 261 };
 262
 263 /**
 264  * struct fimc_m2m_device - v4l2 memory-to-memory device data
 265  * @vfd: the video device node for v4l2 m2m mode
 266  * @m2m_dev: v4l2 memory-to-memory device data
 267  * @ctx: hardware context data
 268  * @refcnt: the reference counter
 269  */
 270 struct fimc_m2m_device {
 271         struct video_device     vfd;
 272         struct v4l2_m2m_dev     *m2m_dev;
 273         struct fimc_ctx         *ctx;
 274         int                     refcnt;
 275 };
 276
 277 #define FIMC_SD_PAD_SINK_CAM    0
 278 #define FIMC_SD_PAD_SINK_FIFO   1
 279 #define FIMC_SD_PAD_SOURCE      2
 280 #define FIMC_SD_PADS_NUM        3
 281
 282 /**
 283  * struct fimc_vid_cap - camera capture device information
 284  * @ctx: hardware context data
 285  * @subdev: subdev exposing the FIMC processing block
 286  * @ve: exynos video device entity structure
 287  * @vd_pad: fimc video capture node pad
 288  * @sd_pads: fimc video processing block pads
 289  * @ci_fmt: image format at the FIMC camera input (and the scaler output)
 290  * @wb_fmt: image format at the FIMC ISP Writeback input
 291  * @source_config: external image source related configuration structure
 292  * @pending_buf_q: the pending buffer queue head
 293  * @active_buf_q: the queue head of buffers scheduled in hardware
 294  * @vbq: the capture am video buffer queue
 295  * @active_buf_cnt: number of video buffers scheduled in hardware
 296  * @buf_index: index for managing the output DMA buffers
 297  * @frame_count: the frame counter for statistics
 298  * @reqbufs_count: the number of buffers requested in REQBUFS ioctl
 299  * @input: capture input type, grp_id of the attached subdev
 300  * @user_subdev_api: true if subdevs are not configured by the host driver
 301  */
 302 struct fimc_vid_cap {
 303         struct fimc_ctx                 *ctx;
 304         struct v4l2_subdev              subdev;
 305         struct exynos_video_entity      ve;
 306         struct media_pad                vd_pad;
 307         struct media_pad                sd_pads[FIMC_SD_PADS_NUM];
 308         struct v4l2_mbus_framefmt       ci_fmt;
 309         struct v4l2_mbus_framefmt       wb_fmt;
 310         struct fimc_source_info         source_config;
 311         struct list_head                pending_buf_q;
 312         struct list_head                active_buf_q;
 313         struct vb2_queue                vbq;
 314         int                             active_buf_cnt;
 315         int                             buf_index;
 316         unsigned int                    frame_count;
 317         unsigned int                    reqbufs_count;
 318         bool                            streaming;
 319         u32                             input;
 320         bool                            user_subdev_api;
 321 };
 322
 323 /**
 324  *  struct fimc_pix_limit - image pixel size limits in various IP configurations
 325  *
 326  *  @scaler_en_w: max input pixel width when the scaler is enabled
 327  *  @scaler_dis_w: max input pixel width when the scaler is disabled
 328  *  @in_rot_en_h: max input width with the input rotator is on
 329  *  @in_rot_dis_w: max input width with the input rotator is off
 330  *  @out_rot_en_w: max output width with the output rotator on
 331  *  @out_rot_dis_w: max output width with the output rotator off
 332  */
 333 struct fimc_pix_limit {
 334         u16 scaler_en_w;
 335         u16 scaler_dis_w;
 336         u16 in_rot_en_h;
 337         u16 in_rot_dis_w;
 338         u16 out_rot_en_w;
 339         u16 out_rot_dis_w;
 340 };
 341
 342 /**
 343  * struct fimc_variant - FIMC device variant information
 344  * @has_inp_rot: set if has input rotator
 345  * @has_out_rot: set if has output rotator
 346  * @has_mainscaler_ext: 1 if extended mainscaler ratios in CIEXTEN register
 347  *                       are present in this IP revision
 348  * @has_cam_if: set if this instance has a camera input interface
 349  * @has_isp_wb: set if this instance has ISP writeback input
 350  * @pix_limit: pixel size constraints for the scaler
 351  * @min_inp_pixsize: minimum input pixel size
 352  * @min_out_pixsize: minimum output pixel size
 353  * @hor_offs_align: horizontal pixel offset alignment
 354  * @min_vsize_align: minimum vertical pixel size alignment
 355  */
 356 struct fimc_variant {
 357         unsigned int    has_inp_rot:1;
 358         unsigned int    has_out_rot:1;
 359         unsigned int    has_mainscaler_ext:1;
 360         unsigned int    has_cam_if:1;
 361         unsigned int    has_isp_wb:1;
 362         const struct fimc_pix_limit *pix_limit;
 363         u16             min_inp_pixsize;
 364         u16             min_out_pixsize;
 365         u16             hor_offs_align;
 366         u16             min_vsize_align;
 367 };
 368
 369 /**
 370  * struct fimc_drvdata - per device type driver data
 371  * @variant: variant information for this device
 372  * @num_entities: number of fimc instances available in a SoC
 373  * @lclk_frequency: local bus clock frequency
 374  * @cistatus2: 1 if the FIMC IPs have CISTATUS2 register
 375  * @dma_pix_hoff: the horizontal DMA offset unit: 1 - pixels, 0 - bytes
 376  * @alpha_color: 1 if alpha color component is supported
 377  * @out_buf_count: maximum number of output DMA buffers supported
 378  */
 379 struct fimc_drvdata {
 380         const struct fimc_variant *variant[FIMC_MAX_DEVS];
 381         int num_entities;
 382         unsigned long lclk_frequency;
 383         /* Fields common to all FIMC IP instances */
 384         u8 cistatus2;
 385         u8 dma_pix_hoff;
 386         u8 alpha_color;
 387         u8 out_buf_count;
 388 };
 389
 390 #define fimc_get_drvdata(_pdev) \
 391         ((struct fimc_drvdata *) platform_get_device_id(_pdev)->driver_data)
 392
 393 struct fimc_ctx;
 394
 395 /**
 396  * struct fimc_dev - abstraction for FIMC entity
 397  * @slock:      the spinlock protecting this data structure
 398  * @lock:       the mutex protecting this data structure
 399  * @pdev:       pointer to the FIMC platform device
 400  * @pdata:      pointer to the device platform data
 401  * @sysreg:     pointer to the SYSREG regmap
 402  * @variant:    the IP variant information
 403  * @id:         FIMC device index (0..FIMC_MAX_DEVS)
 404  * @clock:      clocks required for FIMC operation
 405  * @regs:       the mapped hardware registers
 406  * @irq_queue:  interrupt handler waitqueue
 407  * @v4l2_dev:   root v4l2_device
 408  * @m2m:        memory-to-memory V4L2 device information
 409  * @vid_cap:    camera capture device information
 410  * @state:      flags used to synchronize m2m and capture mode operation
 411  * @pipeline:   fimc video capture pipeline data structure
 412  */
 413 struct fimc_dev {
 414         spinlock_t                      slock;
 415         struct mutex                    lock;
 416         struct platform_device          *pdev;
 417         struct s5p_platform_fimc        *pdata;
 418         struct regmap                   *sysreg;
 419         const struct fimc_variant       *variant;
 420         const struct fimc_drvdata       *drv_data;
 421         int                             id;
 422         struct clk                      *clock[MAX_FIMC_CLOCKS];
 423         void __iomem                    *regs;
 424         wait_queue_head_t               irq_queue;
 425         struct v4l2_device              *v4l2_dev;
 426         struct fimc_m2m_device          m2m;
 427         struct fimc_vid_cap             vid_cap;
 428         unsigned long                   state;
 429 };
 430
 431 /**
 432  * struct fimc_ctrls - v4l2 controls structure
 433  * @handler: the control handler
 434  * @colorfx: image effect control
 435  * @colorfx_cbcr: Cb/Cr coefficients control
 436  * @rotate: image rotation control
 437  * @hflip: horizontal flip control
 438  * @vflip: vertical flip control
 439  * @alpha: RGB alpha control
 440  * @ready: true if @handler is initialized
 441  */
 442 struct fimc_ctrls {
 443         struct v4l2_ctrl_handler handler;
 444         struct {
 445                 struct v4l2_ctrl *colorfx;
 446                 struct v4l2_ctrl *colorfx_cbcr;
 447         };
 448         struct v4l2_ctrl *rotate;
 449         struct v4l2_ctrl *hflip;
 450         struct v4l2_ctrl *vflip;
 451         struct v4l2_ctrl *alpha;
 452         bool ready;
 453 };
 454
 455 /**
 456  * fimc_ctx - the device context data
 457  * @s_frame:            source frame properties
 458  * @d_frame:            destination frame properties
 459  * @out_order_1p:       output 1-plane YCBCR order
 460  * @out_order_2p:       output 2-plane YCBCR order
 461  * @in_order_1p         input 1-plane YCBCR order
 462  * @in_order_2p:        input 2-plane YCBCR order
 463  * @in_path:            input mode (DMA or camera)
 464  * @out_path:           output mode (DMA or FIFO)
 465  * @scaler:             image scaler properties
 466  * @effect:             image effect
 467  * @rotation:           image clockwise rotation in degrees
 468  * @hflip:              indicates image horizontal flip if set
 469  * @vflip:              indicates image vertical flip if set
 470  * @flags:              additional flags for image conversion
 471  * @state:              flags to keep track of user configuration
 472  * @fimc_dev:           the FIMC device this context applies to
 473  * @fh:                 v4l2 file handle
 474  * @ctrls:              v4l2 controls structure
 475  */
 476 struct fimc_ctx {
 477         struct fimc_frame       s_frame;
 478         struct fimc_frame       d_frame;
 479         u32                     out_order_1p;
 480         u32                     out_order_2p;
 481         u32                     in_order_1p;
 482         u32                     in_order_2p;
 483         enum fimc_datapath      in_path;
 484         enum fimc_datapath      out_path;
 485         struct fimc_scaler      scaler;
 486         struct fimc_effect      effect;
 487         int                     rotation;
 488         unsigned int            hflip:1;
 489         unsigned int            vflip:1;
 490         u32                     flags;
 491         u32                     state;
 492         struct fimc_dev         *fimc_dev;
 493         struct v4l2_fh          fh;
 494         struct fimc_ctrls       ctrls;
 495 };
 496
 497 #define fh_to_ctx(__fh) container_of(__fh, struct fimc_ctx, fh)
 498
 499 static inline void set_frame_bounds(struct fimc_frame *f, u32 width, u32 height)
 500 {
 501         f->o_width  = width;
 502         f->o_height = height;
 503         f->f_width  = width;
 504         f->f_height = height;
 505 }
 506
 507 static inline void set_frame_crop(struct fimc_frame *f,
 508                                   u32 left, u32 top, u32 width, u32 height)
 509 {
 510         f->offs_h = left;
 511         f->offs_v = top;
 512         f->width  = width;
 513         f->height = height;
 514 }
 515
 516 static inline u32 fimc_get_format_depth(struct fimc_fmt *ff)
 517 {
 518         u32 i, depth = 0;
 519
 520         if (ff != NULL)
 521                 for (i = 0; i < ff->colplanes; i++)
 522                         depth += ff->depth[i];
 523         return depth;
 524 }
 525
 526 static inline bool fimc_capture_active(struct fimc_dev *fimc)
 527 {
 528         unsigned long flags;
 529         bool ret;
 530
 531         spin_lock_irqsave(&fimc->slock, flags);
 532         ret = !!(fimc->state & (1 << ST_CAPT_RUN) ||
 533                  fimc->state & (1 << ST_CAPT_PEND));
 534         spin_unlock_irqrestore(&fimc->slock, flags);
 535         return ret;
 536 }
 537
 538 static inline void fimc_ctx_state_set(u32 state, struct fimc_ctx *ctx)
 539 {
 540         unsigned long flags;
 541
 542         spin_lock_irqsave(&ctx->fimc_dev->slock, flags);
 543         ctx->state |= state;
 544         spin_unlock_irqrestore(&ctx->fimc_dev->slock, flags);
 545 }
 546
 547 static inline bool fimc_ctx_state_is_set(u32 mask, struct fimc_ctx *ctx)
 548 {
 549         unsigned long flags;
 550         bool ret;
 551
 552         spin_lock_irqsave(&ctx->fimc_dev->slock, flags);
 553         ret = (ctx->state & mask) == mask;
 554         spin_unlock_irqrestore(&ctx->fimc_dev->slock, flags);
 555         return ret;
 556 }
 557
 558 static inline int tiled_fmt(struct fimc_fmt *fmt)
 559 {
 560         return fmt->fourcc == V4L2_PIX_FMT_NV12MT;
 561 }
 562
 563 static inline bool fimc_jpeg_fourcc(u32 pixelformat)
 564 {
 565         return (pixelformat == V4L2_PIX_FMT_JPEG ||
 566                 pixelformat == V4L2_PIX_FMT_S5C_UYVY_JPG);
 567 }
 568
 569 static inline bool fimc_user_defined_mbus_fmt(u32 code)
 570 {
 571         return (code == MEDIA_BUS_FMT_JPEG_1X8 ||
 572                 code == MEDIA_BUS_FMT_S5C_UYVY_JPEG_1X8);
 573 }
 574
 575 /* Return the alpha component bit mask */
 576 static inline int fimc_get_alpha_mask(struct fimc_fmt *fmt)
 577 {
 578         switch (fmt->color) {
 579         case FIMC_FMT_RGB444:   return 0x0f;
 580         case FIMC_FMT_RGB555:   return 0x01;
 581         case FIMC_FMT_RGB888:   return 0xff;
 582         default:                return 0;
 583         };
 584 }
 585
 586 static inline struct fimc_frame *ctx_get_frame(struct fimc_ctx *ctx,
 587                                                enum v4l2_buf_type type)
 588 {
 589         struct fimc_frame *frame;
 590
 591         if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ||
 592             type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 593                 if (fimc_ctx_state_is_set(FIMC_CTX_M2M, ctx))
 594                         frame = &ctx->s_frame;
 595                 else
 596                         return ERR_PTR(-EINVAL);
 597         } else if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
 598                    type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 599                 frame = &ctx->d_frame;
 600         } else {
 601                 v4l2_err(ctx->fimc_dev->v4l2_dev,
 602                         "Wrong buffer/video queue type (%d)\n", type);
 603                 return ERR_PTR(-EINVAL);
 604         }
 605
 606         return frame;
 607 }
 608
 609 /* -----------------------------------------------------*/
 610 /* fimc-core.c */
 611 int fimc_vidioc_enum_fmt_mplane(struct file *file, void *priv,
 612                                 struct v4l2_fmtdesc *f);
 613 int fimc_ctrls_create(struct fimc_ctx *ctx);
 614 void fimc_ctrls_delete(struct fimc_ctx *ctx);
 615 void fimc_ctrls_activate(struct fimc_ctx *ctx, bool active);
 616 void fimc_alpha_ctrl_update(struct fimc_ctx *ctx);
 617 void __fimc_get_format(struct fimc_frame *frame, struct v4l2_format *f);
 618 void fimc_adjust_mplane_format(struct fimc_fmt *fmt, u32 width, u32 height,
 619                                struct v4l2_pix_format_mplane *pix);
 620 struct fimc_fmt *fimc_find_format(const u32 *pixelformat, const u32 *mbus_code,
 621                                   unsigned int mask, int index);
 622 struct fimc_fmt *fimc_get_format(unsigned int index);
 623
 624 int fimc_check_scaler_ratio(struct fimc_ctx *ctx, int sw, int sh,
 625                             int dw, int dh, int rotation);
 626 int fimc_set_scaler_info(struct fimc_ctx *ctx);
 627 int fimc_prepare_config(struct fimc_ctx *ctx, u32 flags);
 628 int fimc_prepare_addr(struct fimc_ctx *ctx, struct vb2_buffer *vb,
 629                       struct fimc_frame *frame, struct fimc_addr *addr);
 630 void fimc_prepare_dma_offset(struct fimc_ctx *ctx, struct fimc_frame *f);
 631 void fimc_set_yuv_order(struct fimc_ctx *ctx);
 632 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf);
 633
 634 int fimc_register_m2m_device(struct fimc_dev *fimc,
 635                              struct v4l2_device *v4l2_dev);
 636 void fimc_unregister_m2m_device(struct fimc_dev *fimc);
 637 int fimc_register_driver(void);
 638 void fimc_unregister_driver(void);
 639
 640 #ifdef CONFIG_MFD_SYSCON
 641 static inline struct regmap * fimc_get_sysreg_regmap(struct device_node *node)
 642 {
 643         return syscon_regmap_lookup_by_phandle(node, "samsung,sysreg");
 644 }
 645 #else
 646 #define fimc_get_sysreg_regmap(node) (NULL)
 647 #endif
 648
 649 /* -----------------------------------------------------*/
 650 /* fimc-m2m.c */
 651 void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state);
 652
 653 /* -----------------------------------------------------*/
 654 /* fimc-capture.c                                       */
 655 int fimc_initialize_capture_subdev(struct fimc_dev *fimc);
 656 void fimc_unregister_capture_subdev(struct fimc_dev *fimc);
 657 int fimc_capture_ctrls_create(struct fimc_dev *fimc);
 658 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
 659                         void *arg);
 660 int fimc_capture_suspend(struct fimc_dev *fimc);
 661 int fimc_capture_resume(struct fimc_dev *fimc);
 662
 663 /*
 664  * Buffer list manipulation functions. Must be called with fimc.slock held.
 665  */
 666
 667 /**
 668  * fimc_active_queue_add - add buffer to the capture active buffers queue
 669  * @buf: buffer to add to the active buffers list
 670  */
 671 static inline void fimc_active_queue_add(struct fimc_vid_cap *vid_cap,
 672                                          struct fimc_vid_buffer *buf)
 673 {
 674         list_add_tail(&buf->list, &vid_cap->active_buf_q);
 675         vid_cap->active_buf_cnt++;
 676 }
 677
 678 /**
 679  * fimc_active_queue_pop - pop buffer from the capture active buffers queue
 680  *
 681  * The caller must assure the active_buf_q list is not empty.
 682  */
 683 static inline struct fimc_vid_buffer *fimc_active_queue_pop(
 684                                     struct fimc_vid_cap *vid_cap)
 685 {
 686         struct fimc_vid_buffer *buf;
 687         buf = list_entry(vid_cap->active_buf_q.next,
 688                          struct fimc_vid_buffer, list);
 689         list_del(&buf->list);
 690         vid_cap->active_buf_cnt--;
 691         return buf;
 692 }
 693
 694 /**
 695  * fimc_pending_queue_add - add buffer to the capture pending buffers queue
 696  * @buf: buffer to add to the pending buffers list
 697  */
 698 static inline void fimc_pending_queue_add(struct fimc_vid_cap *vid_cap,
 699                                           struct fimc_vid_buffer *buf)
 700 {
 701         list_add_tail(&buf->list, &vid_cap->pending_buf_q);
 702 }
 703
 704 /**
 705  * fimc_pending_queue_pop - pop buffer from the capture pending buffers queue
 706  *
 707  * The caller must assure the pending_buf_q list is not empty.
 708  */
 709 static inline struct fimc_vid_buffer *fimc_pending_queue_pop(
 710                                      struct fimc_vid_cap *vid_cap)
 711 {
 712         struct fimc_vid_buffer *buf;
 713         buf = list_entry(vid_cap->pending_buf_q.next,
 714                         struct fimc_vid_buffer, list);
 715         list_del(&buf->list);
 716         return buf;
 717 }
 718
 719 #endif /* FIMC_CORE_H_ */