drivers/media/platform/rockchip/rkisp1/rkisp1-common.h

   1 /* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
   2 /*
   3  * Rockchip ISP1 Driver - Common definitions
   4  *
   5  * Copyright (C) 2019 Collabora, Ltd.
   6  *
   7  * Based on Rockchip ISP1 driver by Rockchip Electronics Co., Ltd.
   8  * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
   9  */
  10
  11 #ifndef _RKISP1_COMMON_H
  12 #define _RKISP1_COMMON_H
  13
  14 #include <linux/clk.h>
  15 #include <linux/mutex.h>
  16 #include <linux/rkisp1-config.h>
  17 #include <media/media-device.h>
  18 #include <media/media-entity.h>
  19 #include <media/v4l2-ctrls.h>
  20 #include <media/v4l2-device.h>
  21 #include <media/videobuf2-v4l2.h>
  22
  23 #include "rkisp1-regs.h"
  24
  25 /*
  26  * flags on the 'direction' field in struct 'rkisp1_isp_mbus_info' that indicate
  27  * on which pad the media bus format is supported
  28  */
  29 #define RKISP1_ISP_SD_SRC BIT(0)
  30 #define RKISP1_ISP_SD_SINK BIT(1)
  31
  32 /* min and max values for the widths and heights of the entities */
  33 #define RKISP1_ISP_MAX_WIDTH            4032
  34 #define RKISP1_ISP_MAX_HEIGHT           3024
  35 #define RKISP1_ISP_MIN_WIDTH            32
  36 #define RKISP1_ISP_MIN_HEIGHT           32
  37
  38 #define RKISP1_RSZ_MP_SRC_MAX_WIDTH             4416
  39 #define RKISP1_RSZ_MP_SRC_MAX_HEIGHT            3312
  40 #define RKISP1_RSZ_SP_SRC_MAX_WIDTH             1920
  41 #define RKISP1_RSZ_SP_SRC_MAX_HEIGHT            1920
  42 #define RKISP1_RSZ_SRC_MIN_WIDTH                32
  43 #define RKISP1_RSZ_SRC_MIN_HEIGHT               16
  44
  45 /* the default width and height of all the entities */
  46 #define RKISP1_DEFAULT_WIDTH            800
  47 #define RKISP1_DEFAULT_HEIGHT           600
  48
  49 #define RKISP1_DRIVER_NAME      "rkisp1"
  50 #define RKISP1_BUS_INFO         "platform:" RKISP1_DRIVER_NAME
  51
  52 /* maximum number of clocks */
  53 #define RKISP1_MAX_BUS_CLK      8
  54
  55 /* a bitmask of the ready stats */
  56 #define RKISP1_STATS_MEAS_MASK          (RKISP1_CIF_ISP_AWB_DONE |      \
  57                                          RKISP1_CIF_ISP_AFM_FIN |       \
  58                                          RKISP1_CIF_ISP_EXP_END |       \
  59                                          RKISP1_CIF_ISP_HIST_MEASURE_RDY)
  60
  61 /* enum for the resizer pads */
  62 enum rkisp1_rsz_pad {
  63         RKISP1_RSZ_PAD_SINK,
  64         RKISP1_RSZ_PAD_SRC,
  65         RKISP1_RSZ_PAD_MAX
  66 };
  67
  68 /* enum for the capture id */
  69 enum rkisp1_stream_id {
  70         RKISP1_MAINPATH,
  71         RKISP1_SELFPATH,
  72 };
  73
  74 /* bayer patterns */
  75 enum rkisp1_fmt_raw_pat_type {
  76         RKISP1_RAW_RGGB = 0,
  77         RKISP1_RAW_GRBG,
  78         RKISP1_RAW_GBRG,
  79         RKISP1_RAW_BGGR,
  80 };
  81
  82 /* enum for the isp pads */
  83 enum rkisp1_isp_pad {
  84         RKISP1_ISP_PAD_SINK_VIDEO,
  85         RKISP1_ISP_PAD_SINK_PARAMS,
  86         RKISP1_ISP_PAD_SOURCE_VIDEO,
  87         RKISP1_ISP_PAD_SOURCE_STATS,
  88         RKISP1_ISP_PAD_MAX
  89 };
  90
  91 /*
  92  * struct rkisp1_sensor_async - A container for the v4l2_async_subdev to add to the notifier
  93  *                              of the v4l2-async API
  94  *
  95  * @asd:                async_subdev variable for the sensor
  96  * @lanes:              number of lanes
  97  * @mbus_type:          type of bus (currently only CSI2 is supported)
  98  * @mbus_flags:         media bus (V4L2_MBUS_*) flags
  99  * @sd:                 a pointer to v4l2_subdev struct of the sensor
 100  * @pixel_rate_ctrl:    pixel rate of the sensor, used to initialize the phy
 101  * @dphy:               a pointer to the phy
 102  */
 103 struct rkisp1_sensor_async {
 104         struct v4l2_async_subdev asd;
 105         unsigned int lanes;
 106         enum v4l2_mbus_type mbus_type;
 107         unsigned int mbus_flags;
 108         struct v4l2_subdev *sd;
 109         struct v4l2_ctrl *pixel_rate_ctrl;
 110         struct phy *dphy;
 111 };
 112
 113 /*
 114  * struct rkisp1_isp - ISP subdev entity
 115  *
 116  * @sd:                         v4l2_subdev variable
 117  * @rkisp1:                     pointer to rkisp1_device
 118  * @pads:                       media pads
 119  * @pad_cfg:                    pads configurations
 120  * @sink_fmt:                   input format
 121  * @src_fmt:                    output format
 122  * @ops_lock:                   ops serialization
 123  * @is_dphy_errctrl_disabled:   if dphy errctrl is disabled (avoid endless interrupt)
 124  * @frame_sequence:             used to synchronize frame_id between video devices.
 125  */
 126 struct rkisp1_isp {
 127         struct v4l2_subdev sd;
 128         struct media_pad pads[RKISP1_ISP_PAD_MAX];
 129         struct v4l2_subdev_pad_config pad_cfg[RKISP1_ISP_PAD_MAX];
 130         const struct rkisp1_isp_mbus_info *sink_fmt;
 131         const struct rkisp1_isp_mbus_info *src_fmt;
 132         struct mutex ops_lock; /* serialize the subdevice ops */
 133         bool is_dphy_errctrl_disabled;
 134         __u32 frame_sequence;
 135 };
 136
 137 /*
 138  * struct rkisp1_vdev_node - Container for the video nodes: params, stats, mainpath, selfpath
 139  *
 140  * @buf_queue:  queue of buffers
 141  * @vlock:      lock of the video node
 142  * @vdev:       video node
 143  * @pad:        media pad
 144  */
 145 struct rkisp1_vdev_node {
 146         struct vb2_queue buf_queue;
 147         struct mutex vlock; /* ioctl serialization mutex */
 148         struct video_device vdev;
 149         struct media_pad pad;
 150 };
 151
 152 /*
 153  * struct rkisp1_buffer - A container for the vb2 buffers used by the video devices:
 154  *                        params, stats, mainpath, selfpath
 155  *
 156  * @vb:         vb2 buffer
 157  * @queue:      entry of the buffer in the queue
 158  * @buff_addr:  dma addresses of each plane, used only by the capture devices: selfpath, mainpath
 159  * @vaddr:      virtual address for buffers used by params and stats devices
 160  */
 161 struct rkisp1_buffer {
 162         struct vb2_v4l2_buffer vb;
 163         struct list_head queue;
 164         union {
 165                 u32 buff_addr[VIDEO_MAX_PLANES];
 166                 void *vaddr;
 167         };
 168 };
 169
 170 /*
 171  * struct rkisp1_dummy_buffer - A buffer to write the next frame to in case
 172  *                              there are no vb2 buffers available.
 173  *
 174  * @vaddr:      return value of call to dma_alloc_attrs.
 175  * @dma_addr:   dma address of the buffer.
 176  * @size:       size of the buffer.
 177  */
 178 struct rkisp1_dummy_buffer {
 179         void *vaddr;
 180         dma_addr_t dma_addr;
 181         u32 size;
 182 };
 183
 184 struct rkisp1_device;
 185
 186 /*
 187  * struct rkisp1_capture - ISP capture video device
 188  *
 189  * @vnode:        video node
 190  * @rkisp1:       pointer to rkisp1_device
 191  * @id:           id of the capture, one of RKISP1_SELFPATH, RKISP1_MAINPATH
 192  * @ops:          list of callbacks to configure the capture device.
 193  * @config:       a pointer to the list of registers to configure the capture format.
 194  * @is_streaming: device is streaming
 195  * @is_stopping:  stop_streaming callback was called and the device is in the process of
 196  *                stopping the streaming.
 197  * @done:         when stop_streaming callback is called, the device waits for the next irq
 198  *                handler to stop the streaming by waiting on the 'done' wait queue.
 199  *                If the irq handler is not called, the stream is stopped by the callback
 200  *                after timeout.
 201  * @sp_y_stride:  the selfpath allows to configure a y stride that is longer than the image width.
 202  * @buf.lock:     lock to protect buf.queue
 203  * @buf.queue:    queued buffer list
 204  * @buf.dummy:    dummy space to store dropped data
 205  *
 206  * rkisp1 uses shadow registers, so it needs two buffers at a time
 207  * @buf.curr:     the buffer used for current frame
 208  * @buf.next:     the buffer used for next frame
 209  * @pix.cfg:      pixel configuration
 210  * @pix.info:     a pointer to the v4l2_format_info of the pixel format
 211  * @pix.fmt:      buffer format
 212  */
 213 struct rkisp1_capture {
 214         struct rkisp1_vdev_node vnode;
 215         struct rkisp1_device *rkisp1;
 216         enum rkisp1_stream_id id;
 217         const struct rkisp1_capture_ops *ops;
 218         const struct rkisp1_capture_config *config;
 219         bool is_streaming;
 220         bool is_stopping;
 221         wait_queue_head_t done;
 222         unsigned int sp_y_stride;
 223         struct {
 224                 /* protects queue, curr and next */
 225                 spinlock_t lock;
 226                 struct list_head queue;
 227                 struct rkisp1_dummy_buffer dummy;
 228                 struct rkisp1_buffer *curr;
 229                 struct rkisp1_buffer *next;
 230         } buf;
 231         struct {
 232                 const struct rkisp1_capture_fmt_cfg *cfg;
 233                 const struct v4l2_format_info *info;
 234                 struct v4l2_pix_format_mplane fmt;
 235         } pix;
 236 };
 237
 238 /*
 239  * struct rkisp1_stats - ISP Statistics device
 240  *
 241  * @vnode:        video node
 242  * @rkisp1:       pointer to the rkisp1 device
 243  * @lock:         locks the buffer list 'stat'
 244  * @stat:         queue of rkisp1_buffer
 245  * @vdev_fmt:     v4l2_format of the metadata format
 246  */
 247 struct rkisp1_stats {
 248         struct rkisp1_vdev_node vnode;
 249         struct rkisp1_device *rkisp1;
 250
 251         spinlock_t lock; /* locks the buffers list 'stats' */
 252         struct list_head stat;
 253         struct v4l2_format vdev_fmt;
 254 };
 255
 256 /*
 257  * struct rkisp1_params - ISP input parameters device
 258  *
 259  * @vnode:              video node
 260  * @rkisp1:             pointer to the rkisp1 device
 261  * @config_lock:        locks the buffer list 'params'
 262  * @params:             queue of rkisp1_buffer
 263  * @vdev_fmt:           v4l2_format of the metadata format
 264  * @quantization:       the quantization configured on the isp's src pad
 265  * @raw_type:           the bayer pattern on the isp video sink pad
 266  */
 267 struct rkisp1_params {
 268         struct rkisp1_vdev_node vnode;
 269         struct rkisp1_device *rkisp1;
 270
 271         spinlock_t config_lock; /* locks the buffers list 'params' */
 272         struct list_head params;
 273         struct v4l2_format vdev_fmt;
 274
 275         enum v4l2_quantization quantization;
 276         enum rkisp1_fmt_raw_pat_type raw_type;
 277 };
 278
 279 /*
 280  * struct rkisp1_resizer - Resizer subdev
 281  *
 282  * @sd:        v4l2_subdev variable
 283  * @id:        id of the resizer, one of RKISP1_SELFPATH, RKISP1_MAINPATH
 284  * @rkisp1:    pointer to the rkisp1 device
 285  * @pads:      media pads
 286  * @pad_cfg:   configurations for the pads
 287  * @config:    the set of registers to configure the resizer
 288  * @pixel_enc: pixel encoding of the resizer
 289  * @ops_lock:  a lock for the subdev ops
 290  */
 291 struct rkisp1_resizer {
 292         struct v4l2_subdev sd;
 293         enum rkisp1_stream_id id;
 294         struct rkisp1_device *rkisp1;
 295         struct media_pad pads[RKISP1_RSZ_PAD_MAX];
 296         struct v4l2_subdev_pad_config pad_cfg[RKISP1_RSZ_PAD_MAX];
 297         const struct rkisp1_rsz_config *config;
 298         enum v4l2_pixel_encoding pixel_enc;
 299         struct mutex ops_lock; /* serialize the subdevice ops */
 300 };
 301
 302 /*
 303  * struct rkisp1_debug - Values to be exposed on debugfs.
 304  *                       The parameters are counters of the number of times the
 305  *                       event occurred since the driver was loaded.
 306  *
 307  * @data_loss:                    loss of data occurred within a line, processing failure
 308  * @outform_size_error:           size error is generated in outmux submodule
 309  * @img_stabilization_size_error: size error is generated in image stabilization submodule
 310  * @inform_size_err:              size error is generated in inform submodule
 311  * @mipi_error:                   mipi error occurred
 312  * @stats_error:                  writing to the 'Interrupt clear register' did not clear
 313  *                                it in the register 'Masked interrupt status'
 314  * @stop_timeout:                 upon stream stop, the capture waits 1 second for the isr to stop
 315  *                                the stream. This param is incremented in case of timeout.
 316  * @frame_drop:                   a frame was ready but the buffer queue was empty so the frame
 317  *                                was not sent to userspace
 318  */
 319 struct rkisp1_debug {
 320         struct dentry *debugfs_dir;
 321         unsigned long data_loss;
 322         unsigned long outform_size_error;
 323         unsigned long img_stabilization_size_error;
 324         unsigned long inform_size_error;
 325         unsigned long irq_delay;
 326         unsigned long mipi_error;
 327         unsigned long stats_error;
 328         unsigned long stop_timeout[2];
 329         unsigned long frame_drop[2];
 330 };
 331
 332 /*
 333  * struct rkisp1_device - ISP platform device
 334  *
 335  * @base_addr:     base register address
 336  * @irq:           the irq number
 337  * @dev:           a pointer to the struct device
 338  * @clk_size:      number of clocks
 339  * @clks:          array of clocks
 340  * @v4l2_dev:      v4l2_device variable
 341  * @media_dev:     media_device variable
 342  * @notifier:      a notifier to register on the v4l2-async API to be notified on the sensor
 343  * @active_sensor: sensor in-use, set when streaming on
 344  * @isp:           ISP sub-device
 345  * @resizer_devs:  resizer sub-devices
 346  * @capture_devs:  capture devices
 347  * @stats:         ISP statistics metadata capture device
 348  * @params:        ISP parameters metadata output device
 349  * @pipe:          media pipeline
 350  * @stream_lock:   serializes {start/stop}_streaming callbacks between the capture devices.
 351  * @debug:         debug params to be exposed on debugfs
 352  */
 353 struct rkisp1_device {
 354         void __iomem *base_addr;
 355         int irq;
 356         struct device *dev;
 357         unsigned int clk_size;
 358         struct clk_bulk_data clks[RKISP1_MAX_BUS_CLK];
 359         struct v4l2_device v4l2_dev;
 360         struct media_device media_dev;
 361         struct v4l2_async_notifier notifier;
 362         struct rkisp1_sensor_async *active_sensor;
 363         struct rkisp1_isp isp;
 364         struct rkisp1_resizer resizer_devs[2];
 365         struct rkisp1_capture capture_devs[2];
 366         struct rkisp1_stats stats;
 367         struct rkisp1_params params;
 368         struct media_pipeline pipe;
 369         struct mutex stream_lock; /* serialize {start/stop}_streaming cb between capture devices */
 370         struct rkisp1_debug debug;
 371 };
 372
 373 /*
 374  * struct rkisp1_isp_mbus_info - ISP media bus info, Translates media bus code to hardware
 375  *                               format values
 376  *
 377  * @mbus_code: media bus code
 378  * @pixel_enc: pixel encoding
 379  * @mipi_dt:   mipi data type
 380  * @yuv_seq:   the order of the Y, Cb, Cr values
 381  * @bus_width: bus width
 382  * @bayer_pat: bayer pattern
 383  * @direction: a bitmask of the flags indicating on which pad the format is supported on
 384  */
 385 struct rkisp1_isp_mbus_info {
 386         u32 mbus_code;
 387         enum v4l2_pixel_encoding pixel_enc;
 388         u32 mipi_dt;
 389         u32 yuv_seq;
 390         u8 bus_width;
 391         enum rkisp1_fmt_raw_pat_type bayer_pat;
 392         unsigned int direction;
 393 };
 394
 395 static inline void
 396 rkisp1_write(struct rkisp1_device *rkisp1, u32 val, unsigned int addr)
 397 {
 398         writel(val, rkisp1->base_addr + addr);
 399 }
 400
 401 static inline u32 rkisp1_read(struct rkisp1_device *rkisp1, unsigned int addr)
 402 {
 403         return readl(rkisp1->base_addr + addr);
 404 }
 405
 406 /*
 407  * rkisp1_cap_enum_mbus_codes - A helper function that return the i'th supported mbus code
 408  *                              of the capture entity. This is used to enumerate the supported
 409  *                              mbus codes on the source pad of the resizer.
 410  *
 411  * @cap:  the capture entity
 412  * @code: the mbus code, the function reads the code->index and fills the code->code
 413  */
 414 int rkisp1_cap_enum_mbus_codes(struct rkisp1_capture *cap,
 415                                struct v4l2_subdev_mbus_code_enum *code);
 416
 417 /*
 418  * rkisp1_sd_adjust_crop_rect - adjust a rectangle to fit into another rectangle.
 419  *
 420  * @crop:   rectangle to adjust.
 421  * @bounds: rectangle used as bounds.
 422  */
 423 void rkisp1_sd_adjust_crop_rect(struct v4l2_rect *crop,
 424                                 const struct v4l2_rect *bounds);
 425
 426 /*
 427  * rkisp1_sd_adjust_crop - adjust a rectangle to fit into media bus format
 428  *
 429  * @crop:   rectangle to adjust.
 430  * @bounds: media bus format used as bounds.
 431  */
 432 void rkisp1_sd_adjust_crop(struct v4l2_rect *crop,
 433                            const struct v4l2_mbus_framefmt *bounds);
 434
 435 /*
 436  * rkisp1_isp_mbus_info - get the isp info of the media bus code
 437  *
 438  * @mbus_code: the media bus code
 439  */
 440 const struct rkisp1_isp_mbus_info *rkisp1_isp_mbus_info_get(u32 mbus_code);
 441
 442 /* rkisp1_params_configure - configure the params when stream starts.
 443  *                           This function is called by the isp entity upon stream starts.
 444  *                           The function applies the initial configuration of the parameters.
 445  *
 446  * @params:       pointer to rkisp1_params.
 447  * @bayer_pat:    the bayer pattern on the isp video sink pad
 448  * @quantization: the quantization configured on the isp's src pad
 449  */
 450 void rkisp1_params_configure(struct rkisp1_params *params,
 451                              enum rkisp1_fmt_raw_pat_type bayer_pat,
 452                              enum v4l2_quantization quantization);
 453
 454 /* rkisp1_params_disable - disable all parameters.
 455  *                         This function is called by the isp entity upon stream start
 456  *                         when capturing bayer format.
 457  *
 458  * @params: pointer to rkisp1_params.
 459  */
 460 void rkisp1_params_disable(struct rkisp1_params *params);
 461
 462 /* irq handlers */
 463 void rkisp1_isp_isr(struct rkisp1_device *rkisp1);
 464 void rkisp1_mipi_isr(struct rkisp1_device *rkisp1);
 465 void rkisp1_capture_isr(struct rkisp1_device *rkisp1);
 466 void rkisp1_stats_isr(struct rkisp1_stats *stats, u32 isp_ris);
 467 void rkisp1_params_isr(struct rkisp1_device *rkisp1);
 468
 469 /* register/unregisters functions of the entities */
 470 int rkisp1_capture_devs_register(struct rkisp1_device *rkisp1);
 471 void rkisp1_capture_devs_unregister(struct rkisp1_device *rkisp1);
 472
 473 int rkisp1_isp_register(struct rkisp1_device *rkisp1);
 474 void rkisp1_isp_unregister(struct rkisp1_device *rkisp1);
 475
 476 int rkisp1_resizer_devs_register(struct rkisp1_device *rkisp1);
 477 void rkisp1_resizer_devs_unregister(struct rkisp1_device *rkisp1);
 478
 479 int rkisp1_stats_register(struct rkisp1_device *rkisp1);
 480 void rkisp1_stats_unregister(struct rkisp1_device *rkisp1);
 481
 482 int rkisp1_params_register(struct rkisp1_device *rkisp1);
 483 void rkisp1_params_unregister(struct rkisp1_device *rkisp1);
 484
 485 #endif /* _RKISP1_COMMON_H */