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

   1 /*
   2  * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef FIMC_CORE_H_
  10 #define FIMC_CORE_H_
  11
  12 /*#define DEBUG*/
  13
  14 #include <linux/platform_device.h>
  15 #include <linux/regmap.h>
  16 #include <linux/sched.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/mfd/syscon.h>
  19 #include <linux/types.h>
  20 #include <linux/videodev2.h>
  21 #include <linux/io.h>
  22 #include <linux/sizes.h>
  23
  24 #include <media/media-entity.h>
  25 #include <media/videobuf2-v4l2.h>
  26 #include <media/v4l2-ctrls.h>
  27 #include <media/v4l2-device.h>
  28 #include <media/v4l2-mem2mem.h>
  29 #include <media/v4l2-mediabus.h>
  30 #include <media/drv-intf/exynos-fimc.h>
  31
  32 #define dbg(fmt, args...) \
  33         pr_debug("%s:%d: " fmt "\n", __func__, __LINE__, ##args)
  34
  35 /* Time to wait for next frame VSYNC interrupt while stopping operation. */
  36 #define FIMC_SHUTDOWN_TIMEOUT   ((100*HZ)/1000)
  37 #define MAX_FIMC_CLOCKS         2
  38 #define FIMC_DRIVER_NAME        "exynos4-fimc"
  39 #define FIMC_MAX_DEVS           4
  40 #define FIMC_MAX_OUT_BUFS       4
  41 #define SCALER_MAX_HRATIO       64
  42 #define SCALER_MAX_VRATIO       64
  43 #define DMA_MIN_SIZE            8
  44 #define FIMC_CAMIF_MAX_HEIGHT   0x2000
  45 #define FIMC_MAX_JPEG_BUF_SIZE  (10 * SZ_1M)
  46 #define FIMC_MAX_PLANES         3
  47 #define FIMC_PIX_LIMITS_MAX     4
  48 #define FIMC_DEF_MIN_SIZE       16
  49 #define FIMC_DEF_HEIGHT_ALIGN   2
  50 #define FIMC_DEF_HOR_OFFS_ALIGN 1
  51 #define FIMC_DEFAULT_WIDTH      640
  52 #define FIMC_DEFAULT_HEIGHT     480
  53
  54 /* indices to the clocks array */
  55 enum {
  56         CLK_BUS,
  57         CLK_GATE,
  58 };
  59
  60 enum fimc_dev_flags {
  61         ST_LPM,
  62         /* m2m node */
  63         ST_M2M_RUN,
  64         ST_M2M_PEND,
  65         ST_M2M_SUSPENDING,
  66         ST_M2M_SUSPENDED,
  67         /* capture node */
  68         ST_CAPT_PEND,
  69         ST_CAPT_RUN,
  70         ST_CAPT_STREAM,
  71         ST_CAPT_ISP_STREAM,
  72         ST_CAPT_SUSPENDED,
  73         ST_CAPT_SHUT,
  74         ST_CAPT_BUSY,
  75         ST_CAPT_APPLY_CFG,
  76         ST_CAPT_JPEG,
  77 };
  78
  79 #define fimc_m2m_active(dev) test_bit(ST_M2M_RUN, &(dev)->state)
  80 #define fimc_m2m_pending(dev) test_bit(ST_M2M_PEND, &(dev)->state)
  81
  82 #define fimc_capture_running(dev) test_bit(ST_CAPT_RUN, &(dev)->state)
  83 #define fimc_capture_pending(dev) test_bit(ST_CAPT_PEND, &(dev)->state)
  84 #define fimc_capture_busy(dev) test_bit(ST_CAPT_BUSY, &(dev)->state)
  85
  86 enum fimc_datapath {
  87         FIMC_IO_NONE,
  88         FIMC_IO_CAMERA,
  89         FIMC_IO_DMA,
  90         FIMC_IO_LCDFIFO,
  91         FIMC_IO_WRITEBACK,
  92         FIMC_IO_ISP,
  93 };
  94
  95 enum fimc_color_fmt {
  96         FIMC_FMT_RGB444 = 0x10,
  97         FIMC_FMT_RGB555,
  98         FIMC_FMT_RGB565,
  99         FIMC_FMT_RGB666,
 100         FIMC_FMT_RGB888,
 101         FIMC_FMT_RGB30_LOCAL,
 102         FIMC_FMT_YCBCR420 = 0x20,
 103         FIMC_FMT_YCBYCR422,
 104         FIMC_FMT_YCRYCB422,
 105         FIMC_FMT_CBYCRY422,
 106         FIMC_FMT_CRYCBY422,
 107         FIMC_FMT_YCBCR444_LOCAL,
 108         FIMC_FMT_RAW8 = 0x40,
 109         FIMC_FMT_RAW10,
 110         FIMC_FMT_RAW12,
 111         FIMC_FMT_JPEG = 0x80,
 112         FIMC_FMT_YUYV_JPEG = 0x100,
 113 };
 114
 115 #define fimc_fmt_is_user_defined(x) (!!((x) & 0x180))
 116 #define fimc_fmt_is_rgb(x) (!!((x) & 0x10))
 117
 118 #define IS_M2M(__strt) ((__strt) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE || \
 119                         __strt == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 120
 121 /* The hardware context state. */
 122 #define FIMC_PARAMS             (1 << 0)
 123 #define FIMC_COMPOSE            (1 << 1)
 124 #define FIMC_CTX_M2M            (1 << 16)
 125 #define FIMC_CTX_CAP            (1 << 17)
 126 #define FIMC_CTX_SHUT           (1 << 18)
 127
 128 /* Image conversion flags */
 129 #define FIMC_IN_DMA_ACCESS_TILED        (1 << 0)
 130 #define FIMC_IN_DMA_ACCESS_LINEAR       (0 << 0)
 131 #define FIMC_OUT_DMA_ACCESS_TILED       (1 << 1)
 132 #define FIMC_OUT_DMA_ACCESS_LINEAR      (0 << 1)
 133 #define FIMC_SCAN_MODE_PROGRESSIVE      (0 << 2)
 134 #define FIMC_SCAN_MODE_INTERLACED       (1 << 2)
 135 /*
 136  * YCbCr data dynamic range for RGB-YUV color conversion.
 137  * Y/Cb/Cr: (0 ~ 255) */
 138 #define FIMC_COLOR_RANGE_WIDE           (0 << 3)
 139 /* Y (16 ~ 235), Cb/Cr (16 ~ 240) */
 140 #define FIMC_COLOR_RANGE_NARROW         (1 << 3)
 141
 142 /**
 143  * struct fimc_dma_offset - pixel offset information for DMA
 144  * @y_h:        y value horizontal offset
 145  * @y_v:        y value vertical offset
 146  * @cb_h:       cb value horizontal offset
 147  * @cb_v:       cb value vertical offset
 148  * @cr_h:       cr value horizontal offset
 149  * @cr_v:       cr value vertical offset
 150  */
 151 struct fimc_dma_offset {
 152         int     y_h;
 153         int     y_v;
 154         int     cb_h;
 155         int     cb_v;
 156         int     cr_h;
 157         int     cr_v;
 158 };
 159
 160 /**
 161  * struct fimc_effect - color effect information
 162  * @type:       effect type
 163  * @pat_cb:     cr value when type is "arbitrary"
 164  * @pat_cr:     cr value when type is "arbitrary"
 165  */
 166 struct fimc_effect {
 167         u32     type;
 168         u8      pat_cb;
 169         u8      pat_cr;
 170 };
 171
 172 /**
 173  * struct fimc_scaler - the configuration data for FIMC inetrnal scaler
 174  * @scaleup_h:          flag indicating scaling up horizontally
 175  * @scaleup_v:          flag indicating scaling up vertically
 176  * @copy_mode:          flag indicating transparent DMA transfer (no scaling
 177  *                      and color format conversion)
 178  * @enabled:            flag indicating if the scaler is used
 179  * @hfactor:            horizontal shift factor
 180  * @vfactor:            vertical shift factor
 181  * @pre_hratio:         horizontal ratio of the prescaler
 182  * @pre_vratio:         vertical ratio of the prescaler
 183  * @pre_dst_width:      the prescaler's destination width
 184  * @pre_dst_height:     the prescaler's destination height
 185  * @main_hratio:        the main scaler's horizontal ratio
 186  * @main_vratio:        the main scaler's vertical ratio
 187  * @real_width:         source pixel (width - offset)
 188  * @real_height:        source pixel (height - offset)
 189  */
 190 struct fimc_scaler {
 191         unsigned int scaleup_h:1;
 192         unsigned int scaleup_v:1;
 193         unsigned int copy_mode:1;
 194         unsigned int enabled:1;
 195         u32     hfactor;
 196         u32     vfactor;
 197         u32     pre_hratio;
 198         u32     pre_vratio;
 199         u32     pre_dst_width;
 200         u32     pre_dst_height;
 201         u32     main_hratio;
 202         u32     main_vratio;
 203         u32     real_width;
 204         u32     real_height;
 205 };
 206
 207 /**
 208  * struct fimc_addr - the FIMC physical address set for DMA
 209  * @y:   luminance plane physical address
 210  * @cb:  Cb plane physical address
 211  * @cr:  Cr plane physical address
 212  */
 213 struct fimc_addr {
 214         u32     y;
 215         u32     cb;
 216         u32     cr;
 217 };
 218
 219 /**
 220  * struct fimc_vid_buffer - the driver's video buffer
 221  * @vb:    v4l videobuf buffer
 222  * @list:  linked list structure for buffer queue
 223  * @paddr: precalculated physical address set
 224  * @index: buffer index for the output DMA engine
 225  */
 226 struct fimc_vid_buffer {
 227         struct vb2_v4l2_buffer vb;
 228         struct list_head        list;
 229         struct fimc_addr        paddr;
 230         int                     index;
 231 };
 232
 233 /**
 234  * struct fimc_frame - source/target frame properties
 235  * @f_width:    image full width (virtual screen size)
 236  * @f_height:   image full height (virtual screen size)
 237  * @o_width:    original image width as set by S_FMT
 238  * @o_height:   original image height as set by S_FMT
 239  * @offs_h:     image horizontal pixel offset
 240  * @offs_v:     image vertical pixel offset
 241  * @width:      image pixel width
 242  * @height:     image pixel weight
 243  * @payload:    image size in bytes (w x h x bpp)
 244  * @bytesperline: bytesperline value for each plane
 245  * @paddr:      image frame buffer physical addresses
 246  * @dma_offset: DMA offset in bytes
 247  * @fmt:        fimc color format pointer
 248  */
 249 struct fimc_frame {
 250         u32     f_width;
 251         u32     f_height;
 252         u32     o_width;
 253         u32     o_height;
 254         u32     offs_h;
 255         u32     offs_v;
 256         u32     width;
 257         u32     height;
 258         unsigned int            payload[VIDEO_MAX_PLANES];
 259         unsigned int            bytesperline[VIDEO_MAX_PLANES];
 260         struct fimc_addr        paddr;
 261         struct fimc_dma_offset  dma_offset;
 262         struct fimc_fmt         *fmt;
 263         u8                      alpha;
 264 };
 265
 266 /**
 267  * struct fimc_m2m_device - v4l2 memory-to-memory device data
 268  * @vfd: the video device node for v4l2 m2m mode
 269  * @m2m_dev: v4l2 memory-to-memory device data
 270  * @ctx: hardware context data
 271  * @refcnt: the reference counter
 272  */
 273 struct fimc_m2m_device {
 274         struct video_device     vfd;
 275         struct v4l2_m2m_dev     *m2m_dev;
 276         struct fimc_ctx         *ctx;
 277         int                     refcnt;
 278 };
 279
 280 #define FIMC_SD_PAD_SINK_CAM    0
 281 #define FIMC_SD_PAD_SINK_FIFO   1
 282 #define FIMC_SD_PAD_SOURCE      2
 283 #define FIMC_SD_PADS_NUM        3
 284
 285 /**
 286  * struct fimc_vid_cap - camera capture device information
 287  * @ctx: hardware context data
 288  * @subdev: subdev exposing the FIMC processing block
 289  * @ve: exynos video device entity structure
 290  * @vd_pad: fimc video capture node pad
 291  * @sd_pads: fimc video processing block pads
 292  * @ci_fmt: image format at the FIMC camera input (and the scaler output)
 293  * @wb_fmt: image format at the FIMC ISP Writeback input
 294  * @source_config: external image source related configuration structure
 295  * @pending_buf_q: the pending buffer queue head
 296  * @active_buf_q: the queue head of buffers scheduled in hardware
 297  * @vbq: the capture am video buffer queue
 298  * @active_buf_cnt: number of video buffers scheduled in hardware
 299  * @buf_index: index for managing the output DMA buffers
 300  * @frame_count: the frame counter for statistics
 301  * @reqbufs_count: the number of buffers requested in REQBUFS ioctl
 302  * @input_index: input (camera sensor) index
 303  * @input: capture input type, grp_id of the attached subdev
 304  * @user_subdev_api: true if subdevs are not configured by the host driver
 305  * @inh_sensor_ctrls: a flag indicating v4l2 controls are inherited from
 306  *                    an image sensor subdev
 307  */
 308 struct fimc_vid_cap {
 309         struct fimc_ctx                 *ctx;
 310         struct vb2_alloc_ctx            *alloc_ctx;
 311         struct v4l2_subdev              subdev;
 312         struct exynos_video_entity      ve;
 313         struct media_pad                vd_pad;
 314         struct media_pad                sd_pads[FIMC_SD_PADS_NUM];
 315         struct v4l2_mbus_framefmt       ci_fmt;
 316         struct v4l2_mbus_framefmt       wb_fmt;
 317         struct fimc_source_info         source_config;
 318         struct list_head                pending_buf_q;
 319         struct list_head                active_buf_q;
 320         struct vb2_queue                vbq;
 321         int                             active_buf_cnt;
 322         int                             buf_index;
 323         unsigned int                    frame_count;
 324         unsigned int                    reqbufs_count;
 325         bool                            streaming;
 326         int                             input_index;
 327         u32                             input;
 328         bool                            user_subdev_api;
 329         bool                            inh_sensor_ctrls;
 330 };
 331
 332 /**
 333  *  struct fimc_pix_limit - image pixel size limits in various IP configurations
 334  *
 335  *  @scaler_en_w: max input pixel width when the scaler is enabled
 336  *  @scaler_dis_w: max input pixel width when the scaler is disabled
 337  *  @in_rot_en_h: max input width with the input rotator is on
 338  *  @in_rot_dis_w: max input width with the input rotator is off
 339  *  @out_rot_en_w: max output width with the output rotator on
 340  *  @out_rot_dis_w: max output width with the output rotator off
 341  */
 342 struct fimc_pix_limit {
 343         u16 scaler_en_w;
 344         u16 scaler_dis_w;
 345         u16 in_rot_en_h;
 346         u16 in_rot_dis_w;
 347         u16 out_rot_en_w;
 348         u16 out_rot_dis_w;
 349 };
 350
 351 /**
 352  * struct fimc_variant - FIMC device variant information
 353  * @has_inp_rot: set if has input rotator
 354  * @has_out_rot: set if has output rotator
 355  * @has_mainscaler_ext: 1 if extended mainscaler ratios in CIEXTEN register
 356  *                       are present in this IP revision
 357  * @has_cam_if: set if this instance has a camera input interface
 358  * @has_isp_wb: set if this instance has ISP writeback input
 359  * @pix_limit: pixel size constraints for the scaler
 360  * @min_inp_pixsize: minimum input pixel size
 361  * @min_out_pixsize: minimum output pixel size
 362  * @hor_offs_align: horizontal pixel offset aligment
 363  * @min_vsize_align: minimum vertical pixel size alignment
 364  */
 365 struct fimc_variant {
 366         unsigned int    has_inp_rot:1;
 367         unsigned int    has_out_rot:1;
 368         unsigned int    has_mainscaler_ext:1;
 369         unsigned int    has_cam_if:1;
 370         unsigned int    has_isp_wb:1;
 371         const struct fimc_pix_limit *pix_limit;
 372         u16             min_inp_pixsize;
 373         u16             min_out_pixsize;
 374         u16             hor_offs_align;
 375         u16             min_vsize_align;
 376 };
 377
 378 /**
 379  * struct fimc_drvdata - per device type driver data
 380  * @variant: variant information for this device
 381  * @num_entities: number of fimc instances available in a SoC
 382  * @lclk_frequency: local bus clock frequency
 383  * @cistatus2: 1 if the FIMC IPs have CISTATUS2 register
 384  * @dma_pix_hoff: the horizontal DMA offset unit: 1 - pixels, 0 - bytes
 385  * @alpha_color: 1 if alpha color component is supported
 386  * @out_buf_count: maximum number of output DMA buffers supported
 387  */
 388 struct fimc_drvdata {
 389         const struct fimc_variant *variant[FIMC_MAX_DEVS];
 390         int num_entities;
 391         unsigned long lclk_frequency;
 392         /* Fields common to all FIMC IP instances */
 393         u8 cistatus2;
 394         u8 dma_pix_hoff;
 395         u8 alpha_color;
 396         u8 out_buf_count;
 397 };
 398
 399 #define fimc_get_drvdata(_pdev) \
 400         ((struct fimc_drvdata *) platform_get_device_id(_pdev)->driver_data)
 401
 402 struct fimc_ctx;
 403
 404 /**
 405  * struct fimc_dev - abstraction for FIMC entity
 406  * @slock:      the spinlock protecting this data structure
 407  * @lock:       the mutex protecting this data structure
 408  * @pdev:       pointer to the FIMC platform device
 409  * @pdata:      pointer to the device platform data
 410  * @sysreg:     pointer to the SYSREG regmap
 411  * @variant:    the IP variant information
 412  * @id:         FIMC device index (0..FIMC_MAX_DEVS)
 413  * @clock:      clocks required for FIMC operation
 414  * @regs:       the mapped hardware registers
 415  * @irq_queue:  interrupt handler waitqueue
 416  * @v4l2_dev:   root v4l2_device
 417  * @m2m:        memory-to-memory V4L2 device information
 418  * @vid_cap:    camera capture device information
 419  * @state:      flags used to synchronize m2m and capture mode operation
 420  * @alloc_ctx:  videobuf2 memory allocator context
 421  * @pipeline:   fimc video capture pipeline data structure
 422  */
 423 struct fimc_dev {
 424         spinlock_t                      slock;
 425         struct mutex                    lock;
 426         struct platform_device          *pdev;
 427         struct s5p_platform_fimc        *pdata;
 428         struct regmap                   *sysreg;
 429         const struct fimc_variant       *variant;
 430         const struct fimc_drvdata       *drv_data;
 431         int                             id;
 432         struct clk                      *clock[MAX_FIMC_CLOCKS];
 433         void __iomem                    *regs;
 434         wait_queue_head_t               irq_queue;
 435         struct v4l2_device              *v4l2_dev;
 436         struct fimc_m2m_device          m2m;
 437         struct fimc_vid_cap             vid_cap;
 438         unsigned long                   state;
 439         struct vb2_alloc_ctx            *alloc_ctx;
 440 };
 441
 442 /**
 443  * struct fimc_ctrls - v4l2 controls structure
 444  * @handler: the control handler
 445  * @colorfx: image effect control
 446  * @colorfx_cbcr: Cb/Cr coefficients control
 447  * @rotate: image rotation control
 448  * @hflip: horizontal flip control
 449  * @vflip: vertical flip control
 450  * @alpha: RGB alpha control
 451  * @ready: true if @handler is initialized
 452  */
 453 struct fimc_ctrls {
 454         struct v4l2_ctrl_handler handler;
 455         struct {
 456                 struct v4l2_ctrl *colorfx;
 457                 struct v4l2_ctrl *colorfx_cbcr;
 458         };
 459         struct v4l2_ctrl *rotate;
 460         struct v4l2_ctrl *hflip;
 461         struct v4l2_ctrl *vflip;
 462         struct v4l2_ctrl *alpha;
 463         bool ready;
 464 };
 465
 466 /**
 467  * fimc_ctx - the device context data
 468  * @s_frame:            source frame properties
 469  * @d_frame:            destination frame properties
 470  * @out_order_1p:       output 1-plane YCBCR order
 471  * @out_order_2p:       output 2-plane YCBCR order
 472  * @in_order_1p         input 1-plane YCBCR order
 473  * @in_order_2p:        input 2-plane YCBCR order
 474  * @in_path:            input mode (DMA or camera)
 475  * @out_path:           output mode (DMA or FIFO)
 476  * @scaler:             image scaler properties
 477  * @effect:             image effect
 478  * @rotation:           image clockwise rotation in degrees
 479  * @hflip:              indicates image horizontal flip if set
 480  * @vflip:              indicates image vertical flip if set
 481  * @flags:              additional flags for image conversion
 482  * @state:              flags to keep track of user configuration
 483  * @fimc_dev:           the FIMC device this context applies to
 484  * @fh:                 v4l2 file handle
 485  * @ctrls:              v4l2 controls structure
 486  */
 487 struct fimc_ctx {
 488         struct fimc_frame       s_frame;
 489         struct fimc_frame       d_frame;
 490         u32                     out_order_1p;
 491         u32                     out_order_2p;
 492         u32                     in_order_1p;
 493         u32                     in_order_2p;
 494         enum fimc_datapath      in_path;
 495         enum fimc_datapath      out_path;
 496         struct fimc_scaler      scaler;
 497         struct fimc_effect      effect;
 498         int                     rotation;
 499         unsigned int            hflip:1;
 500         unsigned int            vflip:1;
 501         u32                     flags;
 502         u32                     state;
 503         struct fimc_dev         *fimc_dev;
 504         struct v4l2_fh          fh;
 505         struct fimc_ctrls       ctrls;
 506 };
 507
 508 #define fh_to_ctx(__fh) container_of(__fh, struct fimc_ctx, fh)
 509
 510 static inline void set_frame_bounds(struct fimc_frame *f, u32 width, u32 height)
 511 {
 512         f->o_width  = width;
 513         f->o_height = height;
 514         f->f_width  = width;
 515         f->f_height = height;
 516 }
 517
 518 static inline void set_frame_crop(struct fimc_frame *f,
 519                                   u32 left, u32 top, u32 width, u32 height)
 520 {
 521         f->offs_h = left;
 522         f->offs_v = top;
 523         f->width  = width;
 524         f->height = height;
 525 }
 526
 527 static inline u32 fimc_get_format_depth(struct fimc_fmt *ff)
 528 {
 529         u32 i, depth = 0;
 530
 531         if (ff != NULL)
 532                 for (i = 0; i < ff->colplanes; i++)
 533                         depth += ff->depth[i];
 534         return depth;
 535 }
 536
 537 static inline bool fimc_capture_active(struct fimc_dev *fimc)
 538 {
 539         unsigned long flags;
 540         bool ret;
 541
 542         spin_lock_irqsave(&fimc->slock, flags);
 543         ret = !!(fimc->state & (1 << ST_CAPT_RUN) ||
 544                  fimc->state & (1 << ST_CAPT_PEND));
 545         spin_unlock_irqrestore(&fimc->slock, flags);
 546         return ret;
 547 }
 548
 549 static inline void fimc_ctx_state_set(u32 state, struct fimc_ctx *ctx)
 550 {
 551         unsigned long flags;
 552
 553         spin_lock_irqsave(&ctx->fimc_dev->slock, flags);
 554         ctx->state |= state;
 555         spin_unlock_irqrestore(&ctx->fimc_dev->slock, flags);
 556 }
 557
 558 static inline bool fimc_ctx_state_is_set(u32 mask, struct fimc_ctx *ctx)
 559 {
 560         unsigned long flags;
 561         bool ret;
 562
 563         spin_lock_irqsave(&ctx->fimc_dev->slock, flags);
 564         ret = (ctx->state & mask) == mask;
 565         spin_unlock_irqrestore(&ctx->fimc_dev->slock, flags);
 566         return ret;
 567 }
 568
 569 static inline int tiled_fmt(struct fimc_fmt *fmt)
 570 {
 571         return fmt->fourcc == V4L2_PIX_FMT_NV12MT;
 572 }
 573
 574 static inline bool fimc_jpeg_fourcc(u32 pixelformat)
 575 {
 576         return (pixelformat == V4L2_PIX_FMT_JPEG ||
 577                 pixelformat == V4L2_PIX_FMT_S5C_UYVY_JPG);
 578 }
 579
 580 static inline bool fimc_user_defined_mbus_fmt(u32 code)
 581 {
 582         return (code == MEDIA_BUS_FMT_JPEG_1X8 ||
 583                 code == MEDIA_BUS_FMT_S5C_UYVY_JPEG_1X8);
 584 }
 585
 586 /* Return the alpha component bit mask */
 587 static inline int fimc_get_alpha_mask(struct fimc_fmt *fmt)
 588 {
 589         switch (fmt->color) {
 590         case FIMC_FMT_RGB444:   return 0x0f;
 591         case FIMC_FMT_RGB555:   return 0x01;
 592         case FIMC_FMT_RGB888:   return 0xff;
 593         default:                return 0;
 594         };
 595 }
 596
 597 static inline struct fimc_frame *ctx_get_frame(struct fimc_ctx *ctx,
 598                                                enum v4l2_buf_type type)
 599 {
 600         struct fimc_frame *frame;
 601
 602         if (V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE == type) {
 603                 if (fimc_ctx_state_is_set(FIMC_CTX_M2M, ctx))
 604                         frame = &ctx->s_frame;
 605                 else
 606                         return ERR_PTR(-EINVAL);
 607         } else if (V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE == type) {
 608                 frame = &ctx->d_frame;
 609         } else {
 610                 v4l2_err(ctx->fimc_dev->v4l2_dev,
 611                         "Wrong buffer/video queue type (%d)\n", type);
 612                 return ERR_PTR(-EINVAL);
 613         }
 614
 615         return frame;
 616 }
 617
 618 /* -----------------------------------------------------*/
 619 /* fimc-core.c */
 620 int fimc_vidioc_enum_fmt_mplane(struct file *file, void *priv,
 621                                 struct v4l2_fmtdesc *f);
 622 int fimc_ctrls_create(struct fimc_ctx *ctx);
 623 void fimc_ctrls_delete(struct fimc_ctx *ctx);
 624 void fimc_ctrls_activate(struct fimc_ctx *ctx, bool active);
 625 void fimc_alpha_ctrl_update(struct fimc_ctx *ctx);
 626 void __fimc_get_format(struct fimc_frame *frame, struct v4l2_format *f);
 627 void fimc_adjust_mplane_format(struct fimc_fmt *fmt, u32 width, u32 height,
 628                                struct v4l2_pix_format_mplane *pix);
 629 struct fimc_fmt *fimc_find_format(const u32 *pixelformat, const u32 *mbus_code,
 630                                   unsigned int mask, int index);
 631 struct fimc_fmt *fimc_get_format(unsigned int index);
 632
 633 int fimc_check_scaler_ratio(struct fimc_ctx *ctx, int sw, int sh,
 634                             int dw, int dh, int rotation);
 635 int fimc_set_scaler_info(struct fimc_ctx *ctx);
 636 int fimc_prepare_config(struct fimc_ctx *ctx, u32 flags);
 637 int fimc_prepare_addr(struct fimc_ctx *ctx, struct vb2_buffer *vb,
 638                       struct fimc_frame *frame, struct fimc_addr *paddr);
 639 void fimc_prepare_dma_offset(struct fimc_ctx *ctx, struct fimc_frame *f);
 640 void fimc_set_yuv_order(struct fimc_ctx *ctx);
 641 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf);
 642
 643 int fimc_register_m2m_device(struct fimc_dev *fimc,
 644                              struct v4l2_device *v4l2_dev);
 645 void fimc_unregister_m2m_device(struct fimc_dev *fimc);
 646 int fimc_register_driver(void);
 647 void fimc_unregister_driver(void);
 648
 649 #ifdef CONFIG_MFD_SYSCON
 650 static inline struct regmap * fimc_get_sysreg_regmap(struct device_node *node)
 651 {
 652         return syscon_regmap_lookup_by_phandle(node, "samsung,sysreg");
 653 }
 654 #else
 655 #define fimc_get_sysreg_regmap(node) (NULL)
 656 #endif
 657
 658 /* -----------------------------------------------------*/
 659 /* fimc-m2m.c */
 660 void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state);
 661
 662 /* -----------------------------------------------------*/
 663 /* fimc-capture.c                                       */
 664 int fimc_initialize_capture_subdev(struct fimc_dev *fimc);
 665 void fimc_unregister_capture_subdev(struct fimc_dev *fimc);
 666 int fimc_capture_ctrls_create(struct fimc_dev *fimc);
 667 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
 668                         void *arg);
 669 int fimc_capture_suspend(struct fimc_dev *fimc);
 670 int fimc_capture_resume(struct fimc_dev *fimc);
 671
 672 /*
 673  * Buffer list manipulation functions. Must be called with fimc.slock held.
 674  */
 675
 676 /**
 677  * fimc_active_queue_add - add buffer to the capture active buffers queue
 678  * @buf: buffer to add to the active buffers list
 679  */
 680 static inline void fimc_active_queue_add(struct fimc_vid_cap *vid_cap,
 681                                          struct fimc_vid_buffer *buf)
 682 {
 683         list_add_tail(&buf->list, &vid_cap->active_buf_q);
 684         vid_cap->active_buf_cnt++;
 685 }
 686
 687 /**
 688  * fimc_active_queue_pop - pop buffer from the capture active buffers queue
 689  *
 690  * The caller must assure the active_buf_q list is not empty.
 691  */
 692 static inline struct fimc_vid_buffer *fimc_active_queue_pop(
 693                                     struct fimc_vid_cap *vid_cap)
 694 {
 695         struct fimc_vid_buffer *buf;
 696         buf = list_entry(vid_cap->active_buf_q.next,
 697                          struct fimc_vid_buffer, list);
 698         list_del(&buf->list);
 699         vid_cap->active_buf_cnt--;
 700         return buf;
 701 }
 702
 703 /**
 704  * fimc_pending_queue_add - add buffer to the capture pending buffers queue
 705  * @buf: buffer to add to the pending buffers list
 706  */
 707 static inline void fimc_pending_queue_add(struct fimc_vid_cap *vid_cap,
 708                                           struct fimc_vid_buffer *buf)
 709 {
 710         list_add_tail(&buf->list, &vid_cap->pending_buf_q);
 711 }
 712
 713 /**
 714  * fimc_pending_queue_pop - pop buffer from the capture pending buffers queue
 715  *
 716  * The caller must assure the pending_buf_q list is not empty.
 717  */
 718 static inline struct fimc_vid_buffer *fimc_pending_queue_pop(
 719                                      struct fimc_vid_cap *vid_cap)
 720 {
 721         struct fimc_vid_buffer *buf;
 722         buf = list_entry(vid_cap->pending_buf_q.next,
 723                         struct fimc_vid_buffer, list);
 724         list_del(&buf->list);
 725         return buf;
 726 }
 727
 728 #endif /* FIMC_CORE_H_ */