drivers/media/platform/imx-pxp.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * i.MX Pixel Pipeline (PXP) mem-to-mem scaler/CSC/rotator driver
   4  *
   5  * Copyright (c) 2018 Pengutronix, Philipp Zabel
   6  *
   7  * based on vim2m
   8  *
   9  * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
  10  * Pawel Osciak, <pawel@osciak.com>
  11  * Marek Szyprowski, <m.szyprowski@samsung.com>
  12  */
  13 #include <linux/clk.h>
  14 #include <linux/delay.h>
  15 #include <linux/dma-mapping.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/io.h>
  18 #include <linux/iopoll.h>
  19 #include <linux/module.h>
  20 #include <linux/of.h>
  21 #include <linux/sched.h>
  22 #include <linux/slab.h>
  23
  24 #include <linux/platform_device.h>
  25 #include <media/v4l2-mem2mem.h>
  26 #include <media/v4l2-device.h>
  27 #include <media/v4l2-ioctl.h>
  28 #include <media/v4l2-ctrls.h>
  29 #include <media/v4l2-event.h>
  30 #include <media/videobuf2-dma-contig.h>
  31
  32 #include "imx-pxp.h"
  33
  34 static unsigned int debug;
  35 module_param(debug, uint, 0644);
  36 MODULE_PARM_DESC(debug, "activates debug info");
  37
  38 #define MIN_W 8
  39 #define MIN_H 8
  40 #define MAX_W 4096
  41 #define MAX_H 4096
  42 #define ALIGN_W 3 /* 8x8 pixel blocks */
  43 #define ALIGN_H 3
  44
  45 /* Flags that indicate a format can be used for capture/output */
  46 #define MEM2MEM_CAPTURE (1 << 0)
  47 #define MEM2MEM_OUTPUT  (1 << 1)
  48
  49 #define MEM2MEM_NAME            "pxp"
  50
  51 /* Flags that indicate processing mode */
  52 #define MEM2MEM_HFLIP   (1 << 0)
  53 #define MEM2MEM_VFLIP   (1 << 1)
  54
  55 #define dprintk(dev, fmt, arg...) \
  56         v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
  57
  58 struct pxp_fmt {
  59         u32     fourcc;
  60         int     depth;
  61         /* Types the format can be used for */
  62         u32     types;
  63 };
  64
  65 static struct pxp_fmt formats[] = {
  66         {
  67                 .fourcc = V4L2_PIX_FMT_XBGR32,
  68                 .depth  = 32,
  69                 /* Both capture and output format */
  70                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
  71         }, {
  72                 .fourcc = V4L2_PIX_FMT_ABGR32,
  73                 .depth  = 32,
  74                 /* Capture-only format */
  75                 .types  = MEM2MEM_CAPTURE,
  76         }, {
  77                 .fourcc = V4L2_PIX_FMT_BGR24,
  78                 .depth  = 24,
  79                 .types  = MEM2MEM_CAPTURE,
  80         }, {
  81                 .fourcc = V4L2_PIX_FMT_RGB565,
  82                 .depth  = 16,
  83                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
  84         }, {
  85                 .fourcc = V4L2_PIX_FMT_RGB555,
  86                 .depth  = 16,
  87                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
  88         }, {
  89                 .fourcc = V4L2_PIX_FMT_RGB444,
  90                 .depth  = 16,
  91                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
  92         }, {
  93                 .fourcc = V4L2_PIX_FMT_VUYA32,
  94                 .depth  = 32,
  95                 .types  = MEM2MEM_CAPTURE,
  96         }, {
  97                 .fourcc = V4L2_PIX_FMT_VUYX32,
  98                 .depth  = 32,
  99                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 100         }, {
 101                 .fourcc = V4L2_PIX_FMT_UYVY,
 102                 .depth  = 16,
 103                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 104         }, {
 105                 .fourcc = V4L2_PIX_FMT_YUYV,
 106                 .depth  = 16,
 107                 /* Output-only format */
 108                 .types  = MEM2MEM_OUTPUT,
 109         }, {
 110                 .fourcc = V4L2_PIX_FMT_VYUY,
 111                 .depth  = 16,
 112                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 113         }, {
 114                 .fourcc = V4L2_PIX_FMT_YVYU,
 115                 .depth  = 16,
 116                 .types  = MEM2MEM_OUTPUT,
 117         }, {
 118                 .fourcc = V4L2_PIX_FMT_GREY,
 119                 .depth  = 8,
 120                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 121         }, {
 122                 .fourcc = V4L2_PIX_FMT_Y4,
 123                 .depth  = 4,
 124                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 125         }, {
 126                 .fourcc = V4L2_PIX_FMT_NV16,
 127                 .depth  = 16,
 128                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 129         }, {
 130                 .fourcc = V4L2_PIX_FMT_NV12,
 131                 .depth  = 12,
 132                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 133         }, {
 134                 .fourcc = V4L2_PIX_FMT_NV21,
 135                 .depth  = 12,
 136                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 137         }, {
 138                 .fourcc = V4L2_PIX_FMT_NV61,
 139                 .depth  = 16,
 140                 .types  = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
 141         }, {
 142                 .fourcc = V4L2_PIX_FMT_YUV422P,
 143                 .depth  = 16,
 144                 .types  = MEM2MEM_OUTPUT,
 145         }, {
 146                 .fourcc = V4L2_PIX_FMT_YUV420,
 147                 .depth  = 12,
 148                 .types  = MEM2MEM_OUTPUT,
 149         },
 150 };
 151
 152 #define NUM_FORMATS ARRAY_SIZE(formats)
 153
 154 /* Per-queue, driver-specific private data */
 155 struct pxp_q_data {
 156         unsigned int            width;
 157         unsigned int            height;
 158         unsigned int            bytesperline;
 159         unsigned int            sizeimage;
 160         unsigned int            sequence;
 161         struct pxp_fmt          *fmt;
 162         enum v4l2_ycbcr_encoding ycbcr_enc;
 163         enum v4l2_quantization  quant;
 164 };
 165
 166 enum {
 167         V4L2_M2M_SRC = 0,
 168         V4L2_M2M_DST = 1,
 169 };
 170
 171 static struct pxp_fmt *find_format(struct v4l2_format *f)
 172 {
 173         struct pxp_fmt *fmt;
 174         unsigned int k;
 175
 176         for (k = 0; k < NUM_FORMATS; k++) {
 177                 fmt = &formats[k];
 178                 if (fmt->fourcc == f->fmt.pix.pixelformat)
 179                         break;
 180         }
 181
 182         if (k == NUM_FORMATS)
 183                 return NULL;
 184
 185         return &formats[k];
 186 }
 187
 188 struct pxp_dev {
 189         struct v4l2_device      v4l2_dev;
 190         struct video_device     vfd;
 191
 192         struct clk              *clk;
 193         void __iomem            *mmio;
 194
 195         atomic_t                num_inst;
 196         struct mutex            dev_mutex;
 197         spinlock_t              irqlock;
 198
 199         struct v4l2_m2m_dev     *m2m_dev;
 200 };
 201
 202 struct pxp_ctx {
 203         struct v4l2_fh          fh;
 204         struct pxp_dev  *dev;
 205
 206         struct v4l2_ctrl_handler hdl;
 207
 208         /* Abort requested by m2m */
 209         int                     aborting;
 210
 211         /* Processing mode */
 212         int                     mode;
 213         u8                      alpha_component;
 214
 215         enum v4l2_colorspace    colorspace;
 216         enum v4l2_xfer_func     xfer_func;
 217
 218         /* Source and destination queue data */
 219         struct pxp_q_data   q_data[2];
 220 };
 221
 222 static inline struct pxp_ctx *file2ctx(struct file *file)
 223 {
 224         return container_of(file->private_data, struct pxp_ctx, fh);
 225 }
 226
 227 static struct pxp_q_data *get_q_data(struct pxp_ctx *ctx,
 228                                          enum v4l2_buf_type type)
 229 {
 230         if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 231                 return &ctx->q_data[V4L2_M2M_SRC];
 232         else
 233                 return &ctx->q_data[V4L2_M2M_DST];
 234 }
 235
 236 static u32 pxp_v4l2_pix_fmt_to_ps_format(u32 v4l2_pix_fmt)
 237 {
 238         switch (v4l2_pix_fmt) {
 239         case V4L2_PIX_FMT_XBGR32:  return BV_PXP_PS_CTRL_FORMAT__RGB888;
 240         case V4L2_PIX_FMT_RGB555:  return BV_PXP_PS_CTRL_FORMAT__RGB555;
 241         case V4L2_PIX_FMT_RGB444:  return BV_PXP_PS_CTRL_FORMAT__RGB444;
 242         case V4L2_PIX_FMT_RGB565:  return BV_PXP_PS_CTRL_FORMAT__RGB565;
 243         case V4L2_PIX_FMT_VUYX32:  return BV_PXP_PS_CTRL_FORMAT__YUV1P444;
 244         case V4L2_PIX_FMT_UYVY:    return BV_PXP_PS_CTRL_FORMAT__UYVY1P422;
 245         case V4L2_PIX_FMT_YUYV:    return BM_PXP_PS_CTRL_WB_SWAP |
 246                                           BV_PXP_PS_CTRL_FORMAT__UYVY1P422;
 247         case V4L2_PIX_FMT_VYUY:    return BV_PXP_PS_CTRL_FORMAT__VYUY1P422;
 248         case V4L2_PIX_FMT_YVYU:    return BM_PXP_PS_CTRL_WB_SWAP |
 249                                           BV_PXP_PS_CTRL_FORMAT__VYUY1P422;
 250         case V4L2_PIX_FMT_GREY:    return BV_PXP_PS_CTRL_FORMAT__Y8;
 251         default:
 252         case V4L2_PIX_FMT_Y4:      return BV_PXP_PS_CTRL_FORMAT__Y4;
 253         case V4L2_PIX_FMT_NV16:    return BV_PXP_PS_CTRL_FORMAT__YUV2P422;
 254         case V4L2_PIX_FMT_NV12:    return BV_PXP_PS_CTRL_FORMAT__YUV2P420;
 255         case V4L2_PIX_FMT_NV21:    return BV_PXP_PS_CTRL_FORMAT__YVU2P420;
 256         case V4L2_PIX_FMT_NV61:    return BV_PXP_PS_CTRL_FORMAT__YVU2P422;
 257         case V4L2_PIX_FMT_YUV422P: return BV_PXP_PS_CTRL_FORMAT__YUV422;
 258         case V4L2_PIX_FMT_YUV420:  return BV_PXP_PS_CTRL_FORMAT__YUV420;
 259         }
 260 }
 261
 262 static u32 pxp_v4l2_pix_fmt_to_out_format(u32 v4l2_pix_fmt)
 263 {
 264         switch (v4l2_pix_fmt) {
 265         case V4L2_PIX_FMT_XBGR32:   return BV_PXP_OUT_CTRL_FORMAT__RGB888;
 266         case V4L2_PIX_FMT_ABGR32:   return BV_PXP_OUT_CTRL_FORMAT__ARGB8888;
 267         case V4L2_PIX_FMT_BGR24:    return BV_PXP_OUT_CTRL_FORMAT__RGB888P;
 268         /* Missing V4L2 pixel formats for ARGB1555 and ARGB4444 */
 269         case V4L2_PIX_FMT_RGB555:   return BV_PXP_OUT_CTRL_FORMAT__RGB555;
 270         case V4L2_PIX_FMT_RGB444:   return BV_PXP_OUT_CTRL_FORMAT__RGB444;
 271         case V4L2_PIX_FMT_RGB565:   return BV_PXP_OUT_CTRL_FORMAT__RGB565;
 272         case V4L2_PIX_FMT_VUYA32:
 273         case V4L2_PIX_FMT_VUYX32:   return BV_PXP_OUT_CTRL_FORMAT__YUV1P444;
 274         case V4L2_PIX_FMT_UYVY:     return BV_PXP_OUT_CTRL_FORMAT__UYVY1P422;
 275         case V4L2_PIX_FMT_VYUY:     return BV_PXP_OUT_CTRL_FORMAT__VYUY1P422;
 276         case V4L2_PIX_FMT_GREY:     return BV_PXP_OUT_CTRL_FORMAT__Y8;
 277         default:
 278         case V4L2_PIX_FMT_Y4:       return BV_PXP_OUT_CTRL_FORMAT__Y4;
 279         case V4L2_PIX_FMT_NV16:     return BV_PXP_OUT_CTRL_FORMAT__YUV2P422;
 280         case V4L2_PIX_FMT_NV12:     return BV_PXP_OUT_CTRL_FORMAT__YUV2P420;
 281         case V4L2_PIX_FMT_NV61:     return BV_PXP_OUT_CTRL_FORMAT__YVU2P422;
 282         case V4L2_PIX_FMT_NV21:     return BV_PXP_OUT_CTRL_FORMAT__YVU2P420;
 283         }
 284 }
 285
 286 static bool pxp_v4l2_pix_fmt_is_yuv(u32 v4l2_pix_fmt)
 287 {
 288         switch (v4l2_pix_fmt) {
 289         case V4L2_PIX_FMT_VUYA32:
 290         case V4L2_PIX_FMT_VUYX32:
 291         case V4L2_PIX_FMT_UYVY:
 292         case V4L2_PIX_FMT_YUYV:
 293         case V4L2_PIX_FMT_VYUY:
 294         case V4L2_PIX_FMT_YVYU:
 295         case V4L2_PIX_FMT_NV16:
 296         case V4L2_PIX_FMT_NV12:
 297         case V4L2_PIX_FMT_NV61:
 298         case V4L2_PIX_FMT_NV21:
 299         case V4L2_PIX_FMT_YUV420:
 300         case V4L2_PIX_FMT_YUV422P:
 301         case V4L2_PIX_FMT_GREY:
 302         case V4L2_PIX_FMT_Y4:
 303                 return true;
 304         default:
 305                 return false;
 306         }
 307 }
 308
 309 static void pxp_setup_csc(struct pxp_ctx *ctx)
 310 {
 311         struct pxp_dev *dev = ctx->dev;
 312         enum v4l2_ycbcr_encoding ycbcr_enc;
 313         enum v4l2_quantization quantization;
 314
 315         if (pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) &&
 316             !pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_DST].fmt->fourcc)) {
 317                 /*
 318                  * CSC1 YUV/YCbCr to RGB conversion is implemented as follows:
 319                  *
 320                  * |R|   |C0 0  C1|   |Y  + Yoffset |
 321                  * |G| = |C0 C3 C2| * |Cb + UVoffset|
 322                  * |B|   |C0 C4 0 |   |Cr + UVoffset|
 323                  *
 324                  * Results are clamped to 0..255.
 325                  *
 326                  * BT.601 limited range:
 327                  *
 328                  * |R|   |1.1644  0.0000  1.5960|   |Y  - 16 |
 329                  * |G| = |1.1644 -0.3917 -0.8129| * |Cb - 128|
 330                  * |B|   |1.1644  2.0172  0.0000|   |Cr - 128|
 331                  */
 332                 static const u32 csc1_coef_bt601_lim[3] = {
 333                         BM_PXP_CSC1_COEF0_YCBCR_MODE |
 334                         BF_PXP_CSC1_COEF0_C0(0x12a) |   /*  1.1641 (-0.03 %) */
 335                         BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
 336                         BF_PXP_CSC1_COEF0_Y_OFFSET(-16),
 337                         BF_PXP_CSC1_COEF1_C1(0x198) |   /*  1.5938 (-0.23 %) */
 338                         BF_PXP_CSC1_COEF1_C4(0x204),    /*  2.0156 (-0.16 %) */
 339                         BF_PXP_CSC1_COEF2_C2(0x730) |   /* -0.8125 (+0.04 %) */
 340                         BF_PXP_CSC1_COEF2_C3(0x79c),    /* -0.3906 (+0.11 %) */
 341                 };
 342                 /*
 343                  * BT.601 full range:
 344                  *
 345                  * |R|   |1.0000  0.0000  1.4020|   |Y  + 0  |
 346                  * |G| = |1.0000 -0.3441 -0.7141| * |Cb - 128|
 347                  * |B|   |1.0000  1.7720  0.0000|   |Cr - 128|
 348                  */
 349                 static const u32 csc1_coef_bt601_full[3] = {
 350                         BM_PXP_CSC1_COEF0_YCBCR_MODE |
 351                         BF_PXP_CSC1_COEF0_C0(0x100) |   /*  1.0000 (+0.00 %) */
 352                         BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
 353                         BF_PXP_CSC1_COEF0_Y_OFFSET(0),
 354                         BF_PXP_CSC1_COEF1_C1(0x166) |   /*  1.3984 (-0.36 %) */
 355                         BF_PXP_CSC1_COEF1_C4(0x1c5),    /*  1.7695 (-0.25 %) */
 356                         BF_PXP_CSC1_COEF2_C2(0x74a) |   /* -0.7109 (+0.32 %) */
 357                         BF_PXP_CSC1_COEF2_C3(0x7a8),    /* -0.3438 (+0.04 %) */
 358                 };
 359                 /*
 360                  * Rec.709 limited range:
 361                  *
 362                  * |R|   |1.1644  0.0000  1.7927|   |Y  - 16 |
 363                  * |G| = |1.1644 -0.2132 -0.5329| * |Cb - 128|
 364                  * |B|   |1.1644  2.1124  0.0000|   |Cr - 128|
 365                  */
 366                 static const u32 csc1_coef_rec709_lim[3] = {
 367                         BM_PXP_CSC1_COEF0_YCBCR_MODE |
 368                         BF_PXP_CSC1_COEF0_C0(0x12a) |   /*  1.1641 (-0.03 %) */
 369                         BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
 370                         BF_PXP_CSC1_COEF0_Y_OFFSET(-16),
 371                         BF_PXP_CSC1_COEF1_C1(0x1ca) |   /*  1.7891 (-0.37 %) */
 372                         BF_PXP_CSC1_COEF1_C4(0x21c),    /*  2.1094 (-0.30 %) */
 373                         BF_PXP_CSC1_COEF2_C2(0x778) |   /* -0.5312 (+0.16 %) */
 374                         BF_PXP_CSC1_COEF2_C3(0x7ca),    /* -0.2109 (+0.23 %) */
 375                 };
 376                 /*
 377                  * Rec.709 full range:
 378                  *
 379                  * |R|   |1.0000  0.0000  1.5748|   |Y  + 0  |
 380                  * |G| = |1.0000 -0.1873 -0.4681| * |Cb - 128|
 381                  * |B|   |1.0000  1.8556  0.0000|   |Cr - 128|
 382                  */
 383                 static const u32 csc1_coef_rec709_full[3] = {
 384                         BM_PXP_CSC1_COEF0_YCBCR_MODE |
 385                         BF_PXP_CSC1_COEF0_C0(0x100) |   /*  1.0000 (+0.00 %) */
 386                         BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
 387                         BF_PXP_CSC1_COEF0_Y_OFFSET(0),
 388                         BF_PXP_CSC1_COEF1_C1(0x193) |   /*  1.5742 (-0.06 %) */
 389                         BF_PXP_CSC1_COEF1_C4(0x1db),    /*  1.8555 (-0.01 %) */
 390                         BF_PXP_CSC1_COEF2_C2(0x789) |   /* -0.4648 (+0.33 %) */
 391                         BF_PXP_CSC1_COEF2_C3(0x7d1),    /* -0.1836 (+0.37 %) */
 392                 };
 393                 /*
 394                  * BT.2020 limited range:
 395                  *
 396                  * |R|   |1.1644  0.0000  1.6787|   |Y  - 16 |
 397                  * |G| = |1.1644 -0.1874 -0.6505| * |Cb - 128|
 398                  * |B|   |1.1644  2.1418  0.0000|   |Cr - 128|
 399                  */
 400                 static const u32 csc1_coef_bt2020_lim[3] = {
 401                         BM_PXP_CSC1_COEF0_YCBCR_MODE |
 402                         BF_PXP_CSC1_COEF0_C0(0x12a) |   /*  1.1641 (-0.03 %) */
 403                         BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
 404                         BF_PXP_CSC1_COEF0_Y_OFFSET(-16),
 405                         BF_PXP_CSC1_COEF1_C1(0x1ad) |   /*  1.6758 (-0.29 %) */
 406                         BF_PXP_CSC1_COEF1_C4(0x224),    /*  2.1406 (-0.11 %) */
 407                         BF_PXP_CSC1_COEF2_C2(0x75a) |   /* -0.6484 (+0.20 %) */
 408                         BF_PXP_CSC1_COEF2_C3(0x7d1),    /* -0.1836 (+0.38 %) */
 409                 };
 410                 /*
 411                  * BT.2020 full range:
 412                  *
 413                  * |R|   |1.0000  0.0000  1.4746|   |Y  + 0  |
 414                  * |G| = |1.0000 -0.1646 -0.5714| * |Cb - 128|
 415                  * |B|   |1.0000  1.8814  0.0000|   |Cr - 128|
 416                  */
 417                 static const u32 csc1_coef_bt2020_full[3] = {
 418                         BM_PXP_CSC1_COEF0_YCBCR_MODE |
 419                         BF_PXP_CSC1_COEF0_C0(0x100) |   /*  1.0000 (+0.00 %) */
 420                         BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
 421                         BF_PXP_CSC1_COEF0_Y_OFFSET(0),
 422                         BF_PXP_CSC1_COEF1_C1(0x179) |   /*  1.4727 (-0.19 %) */
 423                         BF_PXP_CSC1_COEF1_C4(0x1e1),    /*  1.8789 (-0.25 %) */
 424                         BF_PXP_CSC1_COEF2_C2(0x76e) |   /* -0.5703 (+0.11 %) */
 425                         BF_PXP_CSC1_COEF2_C3(0x7d6),    /* -0.1641 (+0.05 %) */
 426                 };
 427                 /*
 428                  * SMPTE 240m limited range:
 429                  *
 430                  * |R|   |1.1644  0.0000  1.7937|   |Y  - 16 |
 431                  * |G| = |1.1644 -0.2565 -0.5427| * |Cb - 128|
 432                  * |B|   |1.1644  2.0798  0.0000|   |Cr - 128|
 433                  */
 434                 static const u32 csc1_coef_smpte240m_lim[3] = {
 435                         BM_PXP_CSC1_COEF0_YCBCR_MODE |
 436                         BF_PXP_CSC1_COEF0_C0(0x12a) |   /*  1.1641 (-0.03 %) */
 437                         BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
 438                         BF_PXP_CSC1_COEF0_Y_OFFSET(-16),
 439                         BF_PXP_CSC1_COEF1_C1(0x1cb) |   /*  1.7930 (-0.07 %) */
 440                         BF_PXP_CSC1_COEF1_C4(0x214),    /*  2.0781 (-0.17 %) */
 441                         BF_PXP_CSC1_COEF2_C2(0x776) |   /* -0.5391 (+0.36 %) */
 442                         BF_PXP_CSC1_COEF2_C3(0x7bf),    /* -0.2539 (+0.26 %) */
 443                 };
 444                 /*
 445                  * SMPTE 240m full range:
 446                  *
 447                  * |R|   |1.0000  0.0000  1.5756|   |Y  + 0  |
 448                  * |G| = |1.0000 -0.2253 -0.4767| * |Cb - 128|
 449                  * |B|   |1.0000  1.8270  0.0000|   |Cr - 128|
 450                  */
 451                 static const u32 csc1_coef_smpte240m_full[3] = {
 452                         BM_PXP_CSC1_COEF0_YCBCR_MODE |
 453                         BF_PXP_CSC1_COEF0_C0(0x100) |   /*  1.0000 (+0.00 %) */
 454                         BF_PXP_CSC1_COEF0_UV_OFFSET(-128) |
 455                         BF_PXP_CSC1_COEF0_Y_OFFSET(0),
 456                         BF_PXP_CSC1_COEF1_C1(0x193) |   /*  1.5742 (-0.14 %) */
 457                         BF_PXP_CSC1_COEF1_C4(0x1d3),    /*  1.8242 (-0.28 %) */
 458                         BF_PXP_CSC1_COEF2_C2(0x786) |   /* -0.4766 (+0.01 %) */
 459                         BF_PXP_CSC1_COEF2_C3(0x7c7),    /* -0.2227 (+0.26 %) */
 460                 };
 461                 const u32 *csc1_coef;
 462
 463                 ycbcr_enc = ctx->q_data[V4L2_M2M_SRC].ycbcr_enc;
 464                 quantization = ctx->q_data[V4L2_M2M_SRC].quant;
 465
 466                 if (ycbcr_enc == V4L2_YCBCR_ENC_601) {
 467                         if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
 468                                 csc1_coef = csc1_coef_bt601_full;
 469                         else
 470                                 csc1_coef = csc1_coef_bt601_lim;
 471                 } else if (ycbcr_enc == V4L2_YCBCR_ENC_709) {
 472                         if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
 473                                 csc1_coef = csc1_coef_rec709_full;
 474                         else
 475                                 csc1_coef = csc1_coef_rec709_lim;
 476                 } else if (ycbcr_enc == V4L2_YCBCR_ENC_BT2020) {
 477                         if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
 478                                 csc1_coef = csc1_coef_bt2020_full;
 479                         else
 480                                 csc1_coef = csc1_coef_bt2020_lim;
 481                 } else {
 482                         if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
 483                                 csc1_coef = csc1_coef_smpte240m_full;
 484                         else
 485                                 csc1_coef = csc1_coef_smpte240m_lim;
 486                 }
 487
 488                 writel(csc1_coef[0], dev->mmio + HW_PXP_CSC1_COEF0);
 489                 writel(csc1_coef[1], dev->mmio + HW_PXP_CSC1_COEF1);
 490                 writel(csc1_coef[2], dev->mmio + HW_PXP_CSC1_COEF2);
 491         } else {
 492                 writel(BM_PXP_CSC1_COEF0_BYPASS, dev->mmio + HW_PXP_CSC1_COEF0);
 493         }
 494
 495         if (!pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) &&
 496             pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_DST].fmt->fourcc)) {
 497                 /*
 498                  * CSC2 RGB to YUV/YCbCr conversion is implemented as follows:
 499                  *
 500                  * |Y |   |A1 A2 A3|   |R|   |D1|
 501                  * |Cb| = |B1 B2 B3| * |G| + |D2|
 502                  * |Cr|   |C1 C2 C3|   |B|   |D3|
 503                  *
 504                  * Results are clamped to 0..255.
 505                  *
 506                  * BT.601 limited range:
 507                  *
 508                  * |Y |   | 0.2568  0.5041  0.0979|   |R|   |16 |
 509                  * |Cb| = |-0.1482 -0.2910  0.4392| * |G| + |128|
 510                  * |Cr|   | 0.4392  0.4392 -0.3678|   |B|   |128|
 511                  */
 512                 static const u32 csc2_coef_bt601_lim[6] = {
 513                         BF_PXP_CSC2_COEF0_A2(0x081) |   /*  0.5039 (-0.02 %) */
 514                         BF_PXP_CSC2_COEF0_A1(0x041),    /*  0.2539 (-0.29 %) */
 515                         BF_PXP_CSC2_COEF1_B1(0x7db) |   /* -0.1445 (+0.37 %) */
 516                         BF_PXP_CSC2_COEF1_A3(0x019),    /*  0.0977 (-0.02 %) */
 517                         BF_PXP_CSC2_COEF2_B3(0x070) |   /*  0.4375 (-0.17 %) */
 518                         BF_PXP_CSC2_COEF2_B2(0x7b6),    /* -0.2891 (+0.20 %) */
 519                         BF_PXP_CSC2_COEF3_C2(0x7a2) |   /* -0.3672 (+0.06 %) */
 520                         BF_PXP_CSC2_COEF3_C1(0x070),    /*  0.4375 (-0.17 %) */
 521                         BF_PXP_CSC2_COEF4_D1(16) |
 522                         BF_PXP_CSC2_COEF4_C3(0x7ee),    /* -0.0703 (+0.11 %) */
 523                         BF_PXP_CSC2_COEF5_D3(128) |
 524                         BF_PXP_CSC2_COEF5_D2(128),
 525                 };
 526                 /*
 527                  * BT.601 full range:
 528                  *
 529                  * |Y |   | 0.2990  0.5870  0.1140|   |R|   |0  |
 530                  * |Cb| = |-0.1687 -0.3313  0.5000| * |G| + |128|
 531                  * |Cr|   | 0.5000  0.5000 -0.4187|   |B|   |128|
 532                  */
 533                 static const u32 csc2_coef_bt601_full[6] = {
 534                         BF_PXP_CSC2_COEF0_A2(0x096) |   /*  0.5859 (-0.11 %) */
 535                         BF_PXP_CSC2_COEF0_A1(0x04c),    /*  0.2969 (-0.21 %) */
 536                         BF_PXP_CSC2_COEF1_B1(0x7d5) |   /* -0.1680 (+0.07 %) */
 537                         BF_PXP_CSC2_COEF1_A3(0x01d),    /*  0.1133 (-0.07 %) */
 538                         BF_PXP_CSC2_COEF2_B3(0x080) |   /*  0.5000 (+0.00 %) */
 539                         BF_PXP_CSC2_COEF2_B2(0x7ac),    /* -0.3281 (+0.32 %) */
 540                         BF_PXP_CSC2_COEF3_C2(0x795) |   /* -0.4180 (+0.07 %) */
 541                         BF_PXP_CSC2_COEF3_C1(0x080),    /*  0.5000 (+0.00 %) */
 542                         BF_PXP_CSC2_COEF4_D1(0) |
 543                         BF_PXP_CSC2_COEF4_C3(0x7ec),    /* -0.0781 (+0.32 %) */
 544                         BF_PXP_CSC2_COEF5_D3(128) |
 545                         BF_PXP_CSC2_COEF5_D2(128),
 546                 };
 547                 /*
 548                  * Rec.709 limited range:
 549                  *
 550                  * |Y |   | 0.1826  0.6142  0.0620|   |R|   |16 |
 551                  * |Cb| = |-0.1007 -0.3385  0.4392| * |G| + |128|
 552                  * |Cr|   | 0.4392  0.4392 -0.3990|   |B|   |128|
 553                  */
 554                 static const u32 csc2_coef_rec709_lim[6] = {
 555                         BF_PXP_CSC2_COEF0_A2(0x09d) |   /*  0.6133 (-0.09 %) */
 556                         BF_PXP_CSC2_COEF0_A1(0x02e),    /*  0.1797 (-0.29 %) */
 557                         BF_PXP_CSC2_COEF1_B1(0x7e7) |   /* -0.0977 (+0.30 %) */
 558                         BF_PXP_CSC2_COEF1_A3(0x00f),    /*  0.0586 (-0.34 %) */
 559                         BF_PXP_CSC2_COEF2_B3(0x070) |   /*  0.4375 (-0.17 %) */
 560                         BF_PXP_CSC2_COEF2_B2(0x7aa),    /* -0.3359 (+0.26 %) */
 561                         BF_PXP_CSC2_COEF3_C2(0x79a) |   /* -0.3984 (+0.05 %) */
 562                         BF_PXP_CSC2_COEF3_C1(0x070),    /*  0.4375 (-0.17 %) */
 563                         BF_PXP_CSC2_COEF4_D1(16) |
 564                         BF_PXP_CSC2_COEF4_C3(0x7f6),    /* -0.0391 (+0.12 %) */
 565                         BF_PXP_CSC2_COEF5_D3(128) |
 566                         BF_PXP_CSC2_COEF5_D2(128),
 567                 };
 568                 /*
 569                  * Rec.709 full range:
 570                  *
 571                  * |Y |   | 0.2126  0.7152  0.0722|   |R|   |0  |
 572                  * |Cb| = |-0.1146 -0.3854  0.5000| * |G| + |128|
 573                  * |Cr|   | 0.5000  0.5000 -0.4542|   |B|   |128|
 574                  */
 575                 static const u32 csc2_coef_rec709_full[6] = {
 576                         BF_PXP_CSC2_COEF0_A2(0x0b7) |   /*  0.7148 (-0.04 %) */
 577                         BF_PXP_CSC2_COEF0_A1(0x036),    /*  0.2109 (-0.17 %) */
 578                         BF_PXP_CSC2_COEF1_B1(0x7e3) |   /* -0.1133 (+0.13 %) */
 579                         BF_PXP_CSC2_COEF1_A3(0x012),    /*  0.0703 (-0.19 %) */
 580                         BF_PXP_CSC2_COEF2_B3(0x080) |   /*  0.5000 (+0.00 %) */
 581                         BF_PXP_CSC2_COEF2_B2(0x79e),    /* -0.3828 (+0.26 %) */
 582                         BF_PXP_CSC2_COEF3_C2(0x78c) |   /* -0.4531 (+0.11 %) */
 583                         BF_PXP_CSC2_COEF3_C1(0x080),    /*  0.5000 (+0.00 %) */
 584                         BF_PXP_CSC2_COEF4_D1(0) |
 585                         BF_PXP_CSC2_COEF4_C3(0x7f5),    /* -0.0430 (+0.28 %) */
 586                         BF_PXP_CSC2_COEF5_D3(128) |
 587                         BF_PXP_CSC2_COEF5_D2(128),
 588                 };
 589                 /*
 590                  * BT.2020 limited range:
 591                  *
 592                  * |Y |   | 0.2256  0.5823  0.0509|   |R|   |16 |
 593                  * |Cb| = |-0.1226 -0.3166  0.4392| * |G| + |128|
 594                  * |Cr|   | 0.4392  0.4392 -0.4039|   |B|   |128|
 595                  */
 596                 static const u32 csc2_coef_bt2020_lim[6] = {
 597                         BF_PXP_CSC2_COEF0_A2(0x095) |   /*  0.5820 (-0.03 %) */
 598                         BF_PXP_CSC2_COEF0_A1(0x039),    /*  0.2227 (-0.30 %) */
 599                         BF_PXP_CSC2_COEF1_B1(0x7e1) |   /* -0.1211 (+0.15 %) */
 600                         BF_PXP_CSC2_COEF1_A3(0x00d),    /*  0.0508 (-0.01 %) */
 601                         BF_PXP_CSC2_COEF2_B3(0x070) |   /*  0.4375 (-0.17 %) */
 602                         BF_PXP_CSC2_COEF2_B2(0x7af),    /* -0.3164 (+0.02 %) */
 603                         BF_PXP_CSC2_COEF3_C2(0x799) |   /* -0.4023 (+0.16 %) */
 604                         BF_PXP_CSC2_COEF3_C1(0x070),    /*  0.4375 (-0.17 %) */
 605                         BF_PXP_CSC2_COEF4_D1(16) |
 606                         BF_PXP_CSC2_COEF4_C3(0x7f7),    /* -0.0352 (+0.02 %) */
 607                         BF_PXP_CSC2_COEF5_D3(128) |
 608                         BF_PXP_CSC2_COEF5_D2(128),
 609                 };
 610                 /*
 611                  * BT.2020 full range:
 612                  *
 613                  * |Y |   | 0.2627  0.6780  0.0593|   |R|   |0  |
 614                  * |Cb| = |-0.1396 -0.3604  0.5000| * |G| + |128|
 615                  * |Cr|   | 0.5000  0.5000 -0.4598|   |B|   |128|
 616                  */
 617                 static const u32 csc2_coef_bt2020_full[6] = {
 618                         BF_PXP_CSC2_COEF0_A2(0x0ad) |   /*  0.6758 (-0.22 %) */
 619                         BF_PXP_CSC2_COEF0_A1(0x043),    /*  0.2617 (-0.10 %) */
 620                         BF_PXP_CSC2_COEF1_B1(0x7dd) |   /* -0.1367 (+0.29 %) */
 621                         BF_PXP_CSC2_COEF1_A3(0x00f),    /*  0.0586 (-0.07 %) */
 622                         BF_PXP_CSC2_COEF2_B3(0x080) |   /*  0.5000 (+0.00 %) */
 623                         BF_PXP_CSC2_COEF2_B2(0x7a4),    /* -0.3594 (+0.10 %) */
 624                         BF_PXP_CSC2_COEF3_C2(0x78b) |   /* -0.4570 (+0.28 %) */
 625                         BF_PXP_CSC2_COEF3_C1(0x080),    /*  0.5000 (+0.00 %) */
 626                         BF_PXP_CSC2_COEF4_D1(0) |
 627                         BF_PXP_CSC2_COEF4_C3(0x7f6),    /* -0.0391 (+0.11 %) */
 628                         BF_PXP_CSC2_COEF5_D3(128) |
 629                         BF_PXP_CSC2_COEF5_D2(128),
 630                 };
 631                 /*
 632                  * SMPTE 240m limited range:
 633                  *
 634                  * |Y |   | 0.1821  0.6020  0.0747|   |R|   |16 |
 635                  * |Cb| = |-0.1019 -0.3373  0.4392| * |G| + |128|
 636                  * |Cr|   | 0.4392  0.4392 -0.3909|   |B|   |128|
 637                  */
 638                 static const u32 csc2_coef_smpte240m_lim[6] = {
 639                         BF_PXP_CSC2_COEF0_A2(0x09a) |   /*  0.6016 (-0.05 %) */
 640                         BF_PXP_CSC2_COEF0_A1(0x02e),    /*  0.1797 (-0.24 %) */
 641                         BF_PXP_CSC2_COEF1_B1(0x7e6) |   /* -0.1016 (+0.03 %) */
 642                         BF_PXP_CSC2_COEF1_A3(0x013),    /*  0.0742 (-0.05 %) */
 643                         BF_PXP_CSC2_COEF2_B3(0x070) |   /*  0.4375 (-0.17 %) */
 644                         BF_PXP_CSC2_COEF2_B2(0x7aa),    /* -0.3359 (+0.14 %) */
 645                         BF_PXP_CSC2_COEF3_C2(0x79c) |   /* -0.3906 (+0.03 %) */
 646                         BF_PXP_CSC2_COEF3_C1(0x070),    /*  0.4375 (-0.17 %) */
 647                         BF_PXP_CSC2_COEF4_D1(16) |
 648                         BF_PXP_CSC2_COEF4_C3(0x7f4),    /* -0.0469 (+0.14 %) */
 649                         BF_PXP_CSC2_COEF5_D3(128) |
 650                         BF_PXP_CSC2_COEF5_D2(128),
 651                 };
 652                 /*
 653                  * SMPTE 240m full range:
 654                  *
 655                  * |Y |   | 0.2120  0.7010  0.0870|   |R|   |0  |
 656                  * |Cb| = |-0.1160 -0.3840  0.5000| * |G| + |128|
 657                  * |Cr|   | 0.5000  0.5000 -0.4450|   |B|   |128|
 658                  */
 659                 static const u32 csc2_coef_smpte240m_full[6] = {
 660                         BF_PXP_CSC2_COEF0_A2(0x0b3) |   /*  0.6992 (-0.18 %) */
 661                         BF_PXP_CSC2_COEF0_A1(0x036),    /*  0.2109 (-0.11 %) */
 662                         BF_PXP_CSC2_COEF1_B1(0x7e3) |   /* -0.1133 (+0.27 %) */
 663                         BF_PXP_CSC2_COEF1_A3(0x016),    /*  0.0859 (-0.11 %) */
 664                         BF_PXP_CSC2_COEF2_B3(0x080) |   /*  0.5000 (+0.00 %) */
 665                         BF_PXP_CSC2_COEF2_B2(0x79e),    /* -0.3828 (+0.12 %) */
 666                         BF_PXP_CSC2_COEF3_C2(0x78f) |   /* -0.4414 (+0.36 %) */
 667                         BF_PXP_CSC2_COEF3_C1(0x080),    /*  0.5000 (+0.00 %) */
 668                         BF_PXP_CSC2_COEF4_D1(0) |
 669                         BF_PXP_CSC2_COEF4_C3(0x7f2),    /* -0.0547 (+0.03 %) */
 670                         BF_PXP_CSC2_COEF5_D3(128) |
 671                         BF_PXP_CSC2_COEF5_D2(128),
 672                 };
 673                 const u32 *csc2_coef;
 674                 u32 csc2_ctrl;
 675
 676                 ycbcr_enc = ctx->q_data[V4L2_M2M_DST].ycbcr_enc;
 677                 quantization = ctx->q_data[V4L2_M2M_DST].quant;
 678
 679                 if (ycbcr_enc == V4L2_YCBCR_ENC_601) {
 680                         if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
 681                                 csc2_coef = csc2_coef_bt601_full;
 682                         else
 683                                 csc2_coef = csc2_coef_bt601_lim;
 684                 } else if (ycbcr_enc == V4L2_YCBCR_ENC_709) {
 685                         if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
 686                                 csc2_coef = csc2_coef_rec709_full;
 687                         else
 688                                 csc2_coef = csc2_coef_rec709_lim;
 689                 } else if (ycbcr_enc == V4L2_YCBCR_ENC_BT2020) {
 690                         if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
 691                                 csc2_coef = csc2_coef_bt2020_full;
 692                         else
 693                                 csc2_coef = csc2_coef_bt2020_lim;
 694                 } else {
 695                         if (quantization == V4L2_QUANTIZATION_FULL_RANGE)
 696                                 csc2_coef = csc2_coef_smpte240m_full;
 697                         else
 698                                 csc2_coef = csc2_coef_smpte240m_lim;
 699                 }
 700                 if (quantization == V4L2_QUANTIZATION_FULL_RANGE) {
 701                         csc2_ctrl = BV_PXP_CSC2_CTRL_CSC_MODE__RGB2YUV <<
 702                                     BP_PXP_CSC2_CTRL_CSC_MODE;
 703                 } else {
 704                         csc2_ctrl = BV_PXP_CSC2_CTRL_CSC_MODE__RGB2YCbCr <<
 705                                     BP_PXP_CSC2_CTRL_CSC_MODE;
 706                 }
 707
 708                 writel(csc2_ctrl, dev->mmio + HW_PXP_CSC2_CTRL);
 709                 writel(csc2_coef[0], dev->mmio + HW_PXP_CSC2_COEF0);
 710                 writel(csc2_coef[1], dev->mmio + HW_PXP_CSC2_COEF1);
 711                 writel(csc2_coef[2], dev->mmio + HW_PXP_CSC2_COEF2);
 712                 writel(csc2_coef[3], dev->mmio + HW_PXP_CSC2_COEF3);
 713                 writel(csc2_coef[4], dev->mmio + HW_PXP_CSC2_COEF4);
 714                 writel(csc2_coef[5], dev->mmio + HW_PXP_CSC2_COEF5);
 715         } else {
 716                 writel(BM_PXP_CSC2_CTRL_BYPASS, dev->mmio + HW_PXP_CSC2_CTRL);
 717         }
 718 }
 719
 720 static int pxp_start(struct pxp_ctx *ctx, struct vb2_v4l2_buffer *in_vb,
 721                      struct vb2_v4l2_buffer *out_vb)
 722 {
 723         struct pxp_dev *dev = ctx->dev;
 724         struct pxp_q_data *q_data;
 725         u32 src_width, src_height, src_stride, src_fourcc;
 726         u32 dst_width, dst_height, dst_stride, dst_fourcc;
 727         dma_addr_t p_in, p_out;
 728         u32 ctrl, out_ctrl, out_buf, out_buf2, out_pitch, out_lrc, out_ps_ulc;
 729         u32 out_ps_lrc;
 730         u32 ps_ctrl, ps_buf, ps_ubuf, ps_vbuf, ps_pitch, ps_scale, ps_offset;
 731         u32 as_ulc, as_lrc;
 732         u32 y_size;
 733         u32 decx, decy, xscale, yscale;
 734
 735         q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 736
 737         src_width = ctx->q_data[V4L2_M2M_SRC].width;
 738         dst_width = ctx->q_data[V4L2_M2M_DST].width;
 739         src_height = ctx->q_data[V4L2_M2M_SRC].height;
 740         dst_height = ctx->q_data[V4L2_M2M_DST].height;
 741         src_stride = ctx->q_data[V4L2_M2M_SRC].bytesperline;
 742         dst_stride = ctx->q_data[V4L2_M2M_DST].bytesperline;
 743         src_fourcc = ctx->q_data[V4L2_M2M_SRC].fmt->fourcc;
 744         dst_fourcc = ctx->q_data[V4L2_M2M_DST].fmt->fourcc;
 745
 746         p_in = vb2_dma_contig_plane_dma_addr(&in_vb->vb2_buf, 0);
 747         p_out = vb2_dma_contig_plane_dma_addr(&out_vb->vb2_buf, 0);
 748
 749         if (!p_in || !p_out) {
 750                 v4l2_err(&dev->v4l2_dev,
 751                          "Acquiring DMA addresses of buffers failed\n");
 752                 return -EFAULT;
 753         }
 754
 755         out_vb->sequence =
 756                 get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE)->sequence++;
 757         in_vb->sequence = q_data->sequence++;
 758         out_vb->vb2_buf.timestamp = in_vb->vb2_buf.timestamp;
 759
 760         if (in_vb->flags & V4L2_BUF_FLAG_TIMECODE)
 761                 out_vb->timecode = in_vb->timecode;
 762         out_vb->field = in_vb->field;
 763         out_vb->flags = in_vb->flags &
 764                 (V4L2_BUF_FLAG_TIMECODE |
 765                  V4L2_BUF_FLAG_KEYFRAME |
 766                  V4L2_BUF_FLAG_PFRAME |
 767                  V4L2_BUF_FLAG_BFRAME |
 768                  V4L2_BUF_FLAG_TSTAMP_SRC_MASK);
 769
 770         /* Rotation disabled, 8x8 block size */
 771         ctrl = BF_PXP_CTRL_VFLIP0(!!(ctx->mode & MEM2MEM_VFLIP)) |
 772                BF_PXP_CTRL_HFLIP0(!!(ctx->mode & MEM2MEM_HFLIP));
 773         /* Always write alpha value as V4L2_CID_ALPHA_COMPONENT */
 774         out_ctrl = BF_PXP_OUT_CTRL_ALPHA(ctx->alpha_component) |
 775                    BF_PXP_OUT_CTRL_ALPHA_OUTPUT(1) |
 776                    pxp_v4l2_pix_fmt_to_out_format(dst_fourcc);
 777         out_buf = p_out;
 778         switch (dst_fourcc) {
 779         case V4L2_PIX_FMT_NV12:
 780         case V4L2_PIX_FMT_NV21:
 781         case V4L2_PIX_FMT_NV16:
 782         case V4L2_PIX_FMT_NV61:
 783                 out_buf2 = out_buf + dst_stride * dst_height;
 784                 break;
 785         default:
 786                 out_buf2 = 0;
 787         }
 788
 789         out_pitch = BF_PXP_OUT_PITCH_PITCH(dst_stride);
 790         out_lrc = BF_PXP_OUT_LRC_X(dst_width - 1) |
 791                   BF_PXP_OUT_LRC_Y(dst_height - 1);
 792         /* PS covers whole output */
 793         out_ps_ulc = BF_PXP_OUT_PS_ULC_X(0) | BF_PXP_OUT_PS_ULC_Y(0);
 794         out_ps_lrc = BF_PXP_OUT_PS_LRC_X(dst_width - 1) |
 795                      BF_PXP_OUT_PS_LRC_Y(dst_height - 1);
 796         /* no AS */
 797         as_ulc = BF_PXP_OUT_AS_ULC_X(1) | BF_PXP_OUT_AS_ULC_Y(1);
 798         as_lrc = BF_PXP_OUT_AS_LRC_X(0) | BF_PXP_OUT_AS_LRC_Y(0);
 799
 800         decx = (src_width <= dst_width) ? 0 : ilog2(src_width / dst_width);
 801         decy = (src_height <= dst_height) ? 0 : ilog2(src_height / dst_height);
 802         ps_ctrl = BF_PXP_PS_CTRL_DECX(decx) | BF_PXP_PS_CTRL_DECY(decy) |
 803                   pxp_v4l2_pix_fmt_to_ps_format(src_fourcc);
 804         ps_buf = p_in;
 805         y_size = src_stride * src_height;
 806         switch (src_fourcc) {
 807         case V4L2_PIX_FMT_YUV420:
 808                 ps_ubuf = ps_buf + y_size;
 809                 ps_vbuf = ps_ubuf + y_size / 4;
 810                 break;
 811         case V4L2_PIX_FMT_YUV422P:
 812                 ps_ubuf = ps_buf + y_size;
 813                 ps_vbuf = ps_ubuf + y_size / 2;
 814                 break;
 815         case V4L2_PIX_FMT_NV12:
 816         case V4L2_PIX_FMT_NV21:
 817         case V4L2_PIX_FMT_NV16:
 818         case V4L2_PIX_FMT_NV61:
 819                 ps_ubuf = ps_buf + y_size;
 820                 ps_vbuf = 0;
 821                 break;
 822         case V4L2_PIX_FMT_GREY:
 823         case V4L2_PIX_FMT_Y4:
 824                 ps_ubuf = 0;
 825                 /* In grayscale mode, ps_vbuf contents are reused as CbCr */
 826                 ps_vbuf = 0x8080;
 827                 break;
 828         default:
 829                 ps_ubuf = 0;
 830                 ps_vbuf = 0;
 831                 break;
 832         }
 833         ps_pitch = BF_PXP_PS_PITCH_PITCH(src_stride);
 834         if (decx) {
 835                 xscale = (src_width >> decx) * 0x1000 / dst_width;
 836         } else {
 837                 switch (src_fourcc) {
 838                 case V4L2_PIX_FMT_UYVY:
 839                 case V4L2_PIX_FMT_YUYV:
 840                 case V4L2_PIX_FMT_VYUY:
 841                 case V4L2_PIX_FMT_YVYU:
 842                 case V4L2_PIX_FMT_NV16:
 843                 case V4L2_PIX_FMT_NV12:
 844                 case V4L2_PIX_FMT_NV21:
 845                 case V4L2_PIX_FMT_NV61:
 846                 case V4L2_PIX_FMT_YUV422P:
 847                 case V4L2_PIX_FMT_YUV420:
 848                         /*
 849                          * This avoids sampling past the right edge for
 850                          * horizontally chroma subsampled formats.
 851                          */
 852                         xscale = (src_width - 2) * 0x1000 / (dst_width - 1);
 853                         break;
 854                 default:
 855                         xscale = (src_width - 1) * 0x1000 / (dst_width - 1);
 856                         break;
 857                 }
 858         }
 859         if (decy)
 860                 yscale = (src_height >> decy) * 0x1000 / dst_height;
 861         else
 862                 yscale = (src_height - 1) * 0x1000 / (dst_height - 1);
 863         ps_scale = BF_PXP_PS_SCALE_YSCALE(yscale) |
 864                    BF_PXP_PS_SCALE_XSCALE(xscale);
 865         ps_offset = BF_PXP_PS_OFFSET_YOFFSET(0) | BF_PXP_PS_OFFSET_XOFFSET(0);
 866
 867         writel(ctrl, dev->mmio + HW_PXP_CTRL);
 868         /* skip STAT */
 869         writel(out_ctrl, dev->mmio + HW_PXP_OUT_CTRL);
 870         writel(out_buf, dev->mmio + HW_PXP_OUT_BUF);
 871         writel(out_buf2, dev->mmio + HW_PXP_OUT_BUF2);
 872         writel(out_pitch, dev->mmio + HW_PXP_OUT_PITCH);
 873         writel(out_lrc, dev->mmio + HW_PXP_OUT_LRC);
 874         writel(out_ps_ulc, dev->mmio + HW_PXP_OUT_PS_ULC);
 875         writel(out_ps_lrc, dev->mmio + HW_PXP_OUT_PS_LRC);
 876         writel(as_ulc, dev->mmio + HW_PXP_OUT_AS_ULC);
 877         writel(as_lrc, dev->mmio + HW_PXP_OUT_AS_LRC);
 878         writel(ps_ctrl, dev->mmio + HW_PXP_PS_CTRL);
 879         writel(ps_buf, dev->mmio + HW_PXP_PS_BUF);
 880         writel(ps_ubuf, dev->mmio + HW_PXP_PS_UBUF);
 881         writel(ps_vbuf, dev->mmio + HW_PXP_PS_VBUF);
 882         writel(ps_pitch, dev->mmio + HW_PXP_PS_PITCH);
 883         writel(0x00ffffff, dev->mmio + HW_PXP_PS_BACKGROUND_0);
 884         writel(ps_scale, dev->mmio + HW_PXP_PS_SCALE);
 885         writel(ps_offset, dev->mmio + HW_PXP_PS_OFFSET);
 886         /* disable processed surface color keying */
 887         writel(0x00ffffff, dev->mmio + HW_PXP_PS_CLRKEYLOW_0);
 888         writel(0x00000000, dev->mmio + HW_PXP_PS_CLRKEYHIGH_0);
 889
 890         /* disable alpha surface color keying */
 891         writel(0x00ffffff, dev->mmio + HW_PXP_AS_CLRKEYLOW_0);
 892         writel(0x00000000, dev->mmio + HW_PXP_AS_CLRKEYHIGH_0);
 893
 894         /* setup CSC */
 895         pxp_setup_csc(ctx);
 896
 897         /* bypass LUT */
 898         writel(BM_PXP_LUT_CTRL_BYPASS, dev->mmio + HW_PXP_LUT_CTRL);
 899
 900         writel(BF_PXP_DATA_PATH_CTRL0_MUX15_SEL(0)|
 901                BF_PXP_DATA_PATH_CTRL0_MUX14_SEL(1)|
 902                BF_PXP_DATA_PATH_CTRL0_MUX13_SEL(0)|
 903                BF_PXP_DATA_PATH_CTRL0_MUX12_SEL(0)|
 904                BF_PXP_DATA_PATH_CTRL0_MUX11_SEL(0)|
 905                BF_PXP_DATA_PATH_CTRL0_MUX10_SEL(0)|
 906                BF_PXP_DATA_PATH_CTRL0_MUX9_SEL(1)|
 907                BF_PXP_DATA_PATH_CTRL0_MUX8_SEL(0)|
 908                BF_PXP_DATA_PATH_CTRL0_MUX7_SEL(0)|
 909                BF_PXP_DATA_PATH_CTRL0_MUX6_SEL(0)|
 910                BF_PXP_DATA_PATH_CTRL0_MUX5_SEL(0)|
 911                BF_PXP_DATA_PATH_CTRL0_MUX4_SEL(0)|
 912                BF_PXP_DATA_PATH_CTRL0_MUX3_SEL(0)|
 913                BF_PXP_DATA_PATH_CTRL0_MUX2_SEL(0)|
 914                BF_PXP_DATA_PATH_CTRL0_MUX1_SEL(0)|
 915                BF_PXP_DATA_PATH_CTRL0_MUX0_SEL(0),
 916                dev->mmio + HW_PXP_DATA_PATH_CTRL0);
 917         writel(BF_PXP_DATA_PATH_CTRL1_MUX17_SEL(1) |
 918                BF_PXP_DATA_PATH_CTRL1_MUX16_SEL(1),
 919                dev->mmio + HW_PXP_DATA_PATH_CTRL1);
 920
 921         writel(0xffff, dev->mmio + HW_PXP_IRQ_MASK);
 922
 923         /* ungate, enable PS/AS/OUT and PXP operation */
 924         writel(BM_PXP_CTRL_IRQ_ENABLE, dev->mmio + HW_PXP_CTRL_SET);
 925         writel(BM_PXP_CTRL_ENABLE | BM_PXP_CTRL_ENABLE_CSC2 |
 926                BM_PXP_CTRL_ENABLE_LUT | BM_PXP_CTRL_ENABLE_ROTATE0 |
 927                BM_PXP_CTRL_ENABLE_PS_AS_OUT, dev->mmio + HW_PXP_CTRL_SET);
 928
 929         return 0;
 930 }
 931
 932 static void pxp_job_finish(struct pxp_dev *dev)
 933 {
 934         struct pxp_ctx *curr_ctx;
 935         struct vb2_v4l2_buffer *src_vb, *dst_vb;
 936         unsigned long flags;
 937
 938         curr_ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
 939
 940         if (curr_ctx == NULL) {
 941                 pr_err("Instance released before the end of transaction\n");
 942                 return;
 943         }
 944
 945         src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
 946         dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
 947
 948         spin_lock_irqsave(&dev->irqlock, flags);
 949         v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE);
 950         v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE);
 951         spin_unlock_irqrestore(&dev->irqlock, flags);
 952
 953         dprintk(curr_ctx->dev, "Finishing transaction\n");
 954         v4l2_m2m_job_finish(dev->m2m_dev, curr_ctx->fh.m2m_ctx);
 955 }
 956
 957 /*
 958  * mem2mem callbacks
 959  */
 960 static void pxp_device_run(void *priv)
 961 {
 962         struct pxp_ctx *ctx = priv;
 963         struct vb2_v4l2_buffer *src_buf, *dst_buf;
 964
 965         src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 966         dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 967
 968         pxp_start(ctx, src_buf, dst_buf);
 969 }
 970
 971 static int pxp_job_ready(void *priv)
 972 {
 973         struct pxp_ctx *ctx = priv;
 974
 975         if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) < 1 ||
 976             v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) < 1) {
 977                 dprintk(ctx->dev, "Not enough buffers available\n");
 978                 return 0;
 979         }
 980
 981         return 1;
 982 }
 983
 984 static void pxp_job_abort(void *priv)
 985 {
 986         struct pxp_ctx *ctx = priv;
 987
 988         /* Will cancel the transaction in the next interrupt handler */
 989         ctx->aborting = 1;
 990 }
 991
 992 /*
 993  * interrupt handler
 994  */
 995 static irqreturn_t pxp_irq_handler(int irq, void *dev_id)
 996 {
 997         struct pxp_dev *dev = dev_id;
 998         u32 stat;
 999
1000         stat = readl(dev->mmio + HW_PXP_STAT);
1001
1002         if (stat & BM_PXP_STAT_IRQ0) {
1003                 /* we expect x = 0, y = height, irq0 = 1 */
1004                 if (stat & ~(BM_PXP_STAT_BLOCKX | BM_PXP_STAT_BLOCKY |
1005                              BM_PXP_STAT_IRQ0))
1006                         dprintk(dev, "%s: stat = 0x%08x\n", __func__, stat);
1007                 writel(BM_PXP_STAT_IRQ0, dev->mmio + HW_PXP_STAT_CLR);
1008
1009                 pxp_job_finish(dev);
1010         } else {
1011                 u32 irq = readl(dev->mmio + HW_PXP_IRQ);
1012
1013                 dprintk(dev, "%s: stat = 0x%08x\n", __func__, stat);
1014                 dprintk(dev, "%s: irq = 0x%08x\n", __func__, irq);
1015
1016                 writel(irq, dev->mmio + HW_PXP_IRQ_CLR);
1017         }
1018
1019         return IRQ_HANDLED;
1020 }
1021
1022 /*
1023  * video ioctls
1024  */
1025 static int pxp_querycap(struct file *file, void *priv,
1026                            struct v4l2_capability *cap)
1027 {
1028         strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
1029         strscpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
1030         snprintf(cap->bus_info, sizeof(cap->bus_info),
1031                         "platform:%s", MEM2MEM_NAME);
1032         return 0;
1033 }
1034
1035 static int pxp_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
1036 {
1037         int i, num;
1038         struct pxp_fmt *fmt;
1039
1040         num = 0;
1041
1042         for (i = 0; i < NUM_FORMATS; ++i) {
1043                 if (formats[i].types & type) {
1044                         /* index-th format of type type found ? */
1045                         if (num == f->index)
1046                                 break;
1047                         /*
1048                          * Correct type but haven't reached our index yet,
1049                          * just increment per-type index
1050                          */
1051                         ++num;
1052                 }
1053         }
1054
1055         if (i < NUM_FORMATS) {
1056                 /* Format found */
1057                 fmt = &formats[i];
1058                 f->pixelformat = fmt->fourcc;
1059                 return 0;
1060         }
1061
1062         /* Format not found */
1063         return -EINVAL;
1064 }
1065
1066 static int pxp_enum_fmt_vid_cap(struct file *file, void *priv,
1067                                 struct v4l2_fmtdesc *f)
1068 {
1069         return pxp_enum_fmt(f, MEM2MEM_CAPTURE);
1070 }
1071
1072 static int pxp_enum_fmt_vid_out(struct file *file, void *priv,
1073                                 struct v4l2_fmtdesc *f)
1074 {
1075         return pxp_enum_fmt(f, MEM2MEM_OUTPUT);
1076 }
1077
1078 static int pxp_g_fmt(struct pxp_ctx *ctx, struct v4l2_format *f)
1079 {
1080         struct vb2_queue *vq;
1081         struct pxp_q_data *q_data;
1082
1083         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
1084         if (!vq)
1085                 return -EINVAL;
1086
1087         q_data = get_q_data(ctx, f->type);
1088
1089         f->fmt.pix.width        = q_data->width;
1090         f->fmt.pix.height       = q_data->height;
1091         f->fmt.pix.field        = V4L2_FIELD_NONE;
1092         f->fmt.pix.pixelformat  = q_data->fmt->fourcc;
1093         f->fmt.pix.bytesperline = q_data->bytesperline;
1094         f->fmt.pix.sizeimage    = q_data->sizeimage;
1095         f->fmt.pix.colorspace   = ctx->colorspace;
1096         f->fmt.pix.xfer_func    = ctx->xfer_func;
1097         f->fmt.pix.ycbcr_enc    = q_data->ycbcr_enc;
1098         f->fmt.pix.quantization = q_data->quant;
1099
1100         return 0;
1101 }
1102
1103 static int pxp_g_fmt_vid_out(struct file *file, void *priv,
1104                                 struct v4l2_format *f)
1105 {
1106         return pxp_g_fmt(file2ctx(file), f);
1107 }
1108
1109 static int pxp_g_fmt_vid_cap(struct file *file, void *priv,
1110                                 struct v4l2_format *f)
1111 {
1112         return pxp_g_fmt(file2ctx(file), f);
1113 }
1114
1115 static inline u32 pxp_bytesperline(struct pxp_fmt *fmt, u32 width)
1116 {
1117         switch (fmt->fourcc) {
1118         case V4L2_PIX_FMT_YUV420:
1119         case V4L2_PIX_FMT_NV12:
1120         case V4L2_PIX_FMT_NV21:
1121         case V4L2_PIX_FMT_YUV422P:
1122         case V4L2_PIX_FMT_NV16:
1123         case V4L2_PIX_FMT_NV61:
1124                 return width;
1125         default:
1126                 return (width * fmt->depth) >> 3;
1127         }
1128 }
1129
1130 static inline u32 pxp_sizeimage(struct pxp_fmt *fmt, u32 width, u32 height)
1131 {
1132         return (fmt->depth * width * height) >> 3;
1133 }
1134
1135 static int pxp_try_fmt(struct v4l2_format *f, struct pxp_fmt *fmt)
1136 {
1137         v4l_bound_align_image(&f->fmt.pix.width, MIN_W, MAX_W, ALIGN_W,
1138                               &f->fmt.pix.height, MIN_H, MAX_H, ALIGN_H, 0);
1139
1140         f->fmt.pix.bytesperline = pxp_bytesperline(fmt, f->fmt.pix.width);
1141         f->fmt.pix.sizeimage = pxp_sizeimage(fmt, f->fmt.pix.width,
1142                                              f->fmt.pix.height);
1143         f->fmt.pix.field = V4L2_FIELD_NONE;
1144
1145         return 0;
1146 }
1147
1148 static void
1149 pxp_fixup_colorimetry_cap(struct pxp_ctx *ctx, u32 dst_fourcc,
1150                           enum v4l2_ycbcr_encoding *ycbcr_enc,
1151                           enum v4l2_quantization *quantization)
1152 {
1153         bool dst_is_yuv = pxp_v4l2_pix_fmt_is_yuv(dst_fourcc);
1154
1155         if (pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) ==
1156             dst_is_yuv) {
1157                 /*
1158                  * There is no support for conversion between different YCbCr
1159                  * encodings or between RGB limited and full range.
1160                  */
1161                 *ycbcr_enc = ctx->q_data[V4L2_M2M_SRC].ycbcr_enc;
1162                 *quantization = ctx->q_data[V4L2_M2M_SRC].quant;
1163         } else {
1164                 *ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(ctx->colorspace);
1165                 *quantization = V4L2_MAP_QUANTIZATION_DEFAULT(!dst_is_yuv,
1166                                                               ctx->colorspace,
1167                                                               *ycbcr_enc);
1168         }
1169 }
1170
1171 static int pxp_try_fmt_vid_cap(struct file *file, void *priv,
1172                                struct v4l2_format *f)
1173 {
1174         struct pxp_fmt *fmt;
1175         struct pxp_ctx *ctx = file2ctx(file);
1176
1177         fmt = find_format(f);
1178         if (!fmt) {
1179                 f->fmt.pix.pixelformat = formats[0].fourcc;
1180                 fmt = find_format(f);
1181         }
1182         if (!(fmt->types & MEM2MEM_CAPTURE)) {
1183                 v4l2_err(&ctx->dev->v4l2_dev,
1184                          "Fourcc format (0x%08x) invalid.\n",
1185                          f->fmt.pix.pixelformat);
1186                 return -EINVAL;
1187         }
1188
1189         f->fmt.pix.colorspace = ctx->colorspace;
1190         f->fmt.pix.xfer_func = ctx->xfer_func;
1191
1192         pxp_fixup_colorimetry_cap(ctx, fmt->fourcc,
1193                                   &f->fmt.pix.ycbcr_enc,
1194                                   &f->fmt.pix.quantization);
1195
1196         return pxp_try_fmt(f, fmt);
1197 }
1198
1199 static int pxp_try_fmt_vid_out(struct file *file, void *priv,
1200                                struct v4l2_format *f)
1201 {
1202         struct pxp_fmt *fmt;
1203         struct pxp_ctx *ctx = file2ctx(file);
1204
1205         fmt = find_format(f);
1206         if (!fmt) {
1207                 f->fmt.pix.pixelformat = formats[0].fourcc;
1208                 fmt = find_format(f);
1209         }
1210         if (!(fmt->types & MEM2MEM_OUTPUT)) {
1211                 v4l2_err(&ctx->dev->v4l2_dev,
1212                          "Fourcc format (0x%08x) invalid.\n",
1213                          f->fmt.pix.pixelformat);
1214                 return -EINVAL;
1215         }
1216
1217         if (!f->fmt.pix.colorspace)
1218                 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
1219
1220         return pxp_try_fmt(f, fmt);
1221 }
1222
1223 static int pxp_s_fmt(struct pxp_ctx *ctx, struct v4l2_format *f)
1224 {
1225         struct pxp_q_data *q_data;
1226         struct vb2_queue *vq;
1227
1228         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
1229         if (!vq)
1230                 return -EINVAL;
1231
1232         q_data = get_q_data(ctx, f->type);
1233         if (!q_data)
1234                 return -EINVAL;
1235
1236         if (vb2_is_busy(vq)) {
1237                 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
1238                 return -EBUSY;
1239         }
1240
1241         q_data->fmt             = find_format(f);
1242         q_data->width           = f->fmt.pix.width;
1243         q_data->height          = f->fmt.pix.height;
1244         q_data->bytesperline    = f->fmt.pix.bytesperline;
1245         q_data->sizeimage       = f->fmt.pix.sizeimage;
1246
1247         dprintk(ctx->dev,
1248                 "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
1249                 f->type, q_data->width, q_data->height, q_data->fmt->fourcc);
1250
1251         return 0;
1252 }
1253
1254 static int pxp_s_fmt_vid_cap(struct file *file, void *priv,
1255                              struct v4l2_format *f)
1256 {
1257         struct pxp_ctx *ctx = file2ctx(file);
1258         int ret;
1259
1260         ret = pxp_try_fmt_vid_cap(file, priv, f);
1261         if (ret)
1262                 return ret;
1263
1264         ret = pxp_s_fmt(file2ctx(file), f);
1265         if (ret)
1266                 return ret;
1267
1268         ctx->q_data[V4L2_M2M_DST].ycbcr_enc = f->fmt.pix.ycbcr_enc;
1269         ctx->q_data[V4L2_M2M_DST].quant = f->fmt.pix.quantization;
1270
1271         return 0;
1272 }
1273
1274 static int pxp_s_fmt_vid_out(struct file *file, void *priv,
1275                              struct v4l2_format *f)
1276 {
1277         struct pxp_ctx *ctx = file2ctx(file);
1278         int ret;
1279
1280         ret = pxp_try_fmt_vid_out(file, priv, f);
1281         if (ret)
1282                 return ret;
1283
1284         ret = pxp_s_fmt(file2ctx(file), f);
1285         if (ret)
1286                 return ret;
1287
1288         ctx->colorspace = f->fmt.pix.colorspace;
1289         ctx->xfer_func = f->fmt.pix.xfer_func;
1290         ctx->q_data[V4L2_M2M_SRC].ycbcr_enc = f->fmt.pix.ycbcr_enc;
1291         ctx->q_data[V4L2_M2M_SRC].quant = f->fmt.pix.quantization;
1292
1293         pxp_fixup_colorimetry_cap(ctx, ctx->q_data[V4L2_M2M_DST].fmt->fourcc,
1294                                   &ctx->q_data[V4L2_M2M_DST].ycbcr_enc,
1295                                   &ctx->q_data[V4L2_M2M_DST].quant);
1296
1297         return 0;
1298 }
1299
1300 static int pxp_s_ctrl(struct v4l2_ctrl *ctrl)
1301 {
1302         struct pxp_ctx *ctx =
1303                 container_of(ctrl->handler, struct pxp_ctx, hdl);
1304
1305         switch (ctrl->id) {
1306         case V4L2_CID_HFLIP:
1307                 if (ctrl->val)
1308                         ctx->mode |= MEM2MEM_HFLIP;
1309                 else
1310                         ctx->mode &= ~MEM2MEM_HFLIP;
1311                 break;
1312
1313         case V4L2_CID_VFLIP:
1314                 if (ctrl->val)
1315                         ctx->mode |= MEM2MEM_VFLIP;
1316                 else
1317                         ctx->mode &= ~MEM2MEM_VFLIP;
1318                 break;
1319
1320         case V4L2_CID_ALPHA_COMPONENT:
1321                 ctx->alpha_component = ctrl->val;
1322                 break;
1323
1324         default:
1325                 v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n");
1326                 return -EINVAL;
1327         }
1328
1329         return 0;
1330 }
1331
1332 static const struct v4l2_ctrl_ops pxp_ctrl_ops = {
1333         .s_ctrl = pxp_s_ctrl,
1334 };
1335
1336 static const struct v4l2_ioctl_ops pxp_ioctl_ops = {
1337         .vidioc_querycap        = pxp_querycap,
1338
1339         .vidioc_enum_fmt_vid_cap = pxp_enum_fmt_vid_cap,
1340         .vidioc_g_fmt_vid_cap   = pxp_g_fmt_vid_cap,
1341         .vidioc_try_fmt_vid_cap = pxp_try_fmt_vid_cap,
1342         .vidioc_s_fmt_vid_cap   = pxp_s_fmt_vid_cap,
1343
1344         .vidioc_enum_fmt_vid_out = pxp_enum_fmt_vid_out,
1345         .vidioc_g_fmt_vid_out   = pxp_g_fmt_vid_out,
1346         .vidioc_try_fmt_vid_out = pxp_try_fmt_vid_out,
1347         .vidioc_s_fmt_vid_out   = pxp_s_fmt_vid_out,
1348
1349         .vidioc_reqbufs         = v4l2_m2m_ioctl_reqbufs,
1350         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
1351         .vidioc_qbuf            = v4l2_m2m_ioctl_qbuf,
1352         .vidioc_dqbuf           = v4l2_m2m_ioctl_dqbuf,
1353         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
1354         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
1355         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
1356
1357         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
1358         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
1359
1360         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1361         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1362 };
1363
1364 /*
1365  * Queue operations
1366  */
1367 static int pxp_queue_setup(struct vb2_queue *vq,
1368                            unsigned int *nbuffers, unsigned int *nplanes,
1369                            unsigned int sizes[], struct device *alloc_devs[])
1370 {
1371         struct pxp_ctx *ctx = vb2_get_drv_priv(vq);
1372         struct pxp_q_data *q_data;
1373         unsigned int size, count = *nbuffers;
1374
1375         q_data = get_q_data(ctx, vq->type);
1376
1377         size = q_data->sizeimage;
1378
1379         *nbuffers = count;
1380
1381         if (*nplanes)
1382                 return sizes[0] < size ? -EINVAL : 0;
1383
1384         *nplanes = 1;
1385         sizes[0] = size;
1386
1387         dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size);
1388
1389         return 0;
1390 }
1391
1392 static int pxp_buf_prepare(struct vb2_buffer *vb)
1393 {
1394         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1395         struct pxp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1396         struct pxp_dev *dev = ctx->dev;
1397         struct pxp_q_data *q_data;
1398
1399         dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type);
1400
1401         q_data = get_q_data(ctx, vb->vb2_queue->type);
1402         if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1403                 if (vbuf->field == V4L2_FIELD_ANY)
1404                         vbuf->field = V4L2_FIELD_NONE;
1405                 if (vbuf->field != V4L2_FIELD_NONE) {
1406                         dprintk(dev, "%s field isn't supported\n", __func__);
1407                         return -EINVAL;
1408                 }
1409         }
1410
1411         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1412                 dprintk(dev, "%s data will not fit into plane (%lu < %lu)\n",
1413                         __func__, vb2_plane_size(vb, 0),
1414                         (long)q_data->sizeimage);
1415                 return -EINVAL;
1416         }
1417
1418         vb2_set_plane_payload(vb, 0, q_data->sizeimage);
1419
1420         return 0;
1421 }
1422
1423 static void pxp_buf_queue(struct vb2_buffer *vb)
1424 {
1425         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1426         struct pxp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1427
1428         v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1429 }
1430
1431 static int pxp_start_streaming(struct vb2_queue *q, unsigned int count)
1432 {
1433         struct pxp_ctx *ctx = vb2_get_drv_priv(q);
1434         struct pxp_q_data *q_data = get_q_data(ctx, q->type);
1435
1436         q_data->sequence = 0;
1437         return 0;
1438 }
1439
1440 static void pxp_stop_streaming(struct vb2_queue *q)
1441 {
1442         struct pxp_ctx *ctx = vb2_get_drv_priv(q);
1443         struct vb2_v4l2_buffer *vbuf;
1444         unsigned long flags;
1445
1446         for (;;) {
1447                 if (V4L2_TYPE_IS_OUTPUT(q->type))
1448                         vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1449                 else
1450                         vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1451                 if (vbuf == NULL)
1452                         return;
1453                 spin_lock_irqsave(&ctx->dev->irqlock, flags);
1454                 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
1455                 spin_unlock_irqrestore(&ctx->dev->irqlock, flags);
1456         }
1457 }
1458
1459 static const struct vb2_ops pxp_qops = {
1460         .queue_setup     = pxp_queue_setup,
1461         .buf_prepare     = pxp_buf_prepare,
1462         .buf_queue       = pxp_buf_queue,
1463         .start_streaming = pxp_start_streaming,
1464         .stop_streaming  = pxp_stop_streaming,
1465         .wait_prepare    = vb2_ops_wait_prepare,
1466         .wait_finish     = vb2_ops_wait_finish,
1467 };
1468
1469 static int queue_init(void *priv, struct vb2_queue *src_vq,
1470                       struct vb2_queue *dst_vq)
1471 {
1472         struct pxp_ctx *ctx = priv;
1473         int ret;
1474
1475         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1476         src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1477         src_vq->drv_priv = ctx;
1478         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1479         src_vq->ops = &pxp_qops;
1480         src_vq->mem_ops = &vb2_dma_contig_memops;
1481         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1482         src_vq->lock = &ctx->dev->dev_mutex;
1483         src_vq->dev = ctx->dev->v4l2_dev.dev;
1484
1485         ret = vb2_queue_init(src_vq);
1486         if (ret)
1487                 return ret;
1488
1489         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1490         dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1491         dst_vq->drv_priv = ctx;
1492         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1493         dst_vq->ops = &pxp_qops;
1494         dst_vq->mem_ops = &vb2_dma_contig_memops;
1495         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1496         dst_vq->lock = &ctx->dev->dev_mutex;
1497         dst_vq->dev = ctx->dev->v4l2_dev.dev;
1498
1499         return vb2_queue_init(dst_vq);
1500 }
1501
1502 /*
1503  * File operations
1504  */
1505 static int pxp_open(struct file *file)
1506 {
1507         struct pxp_dev *dev = video_drvdata(file);
1508         struct pxp_ctx *ctx = NULL;
1509         struct v4l2_ctrl_handler *hdl;
1510         int rc = 0;
1511
1512         if (mutex_lock_interruptible(&dev->dev_mutex))
1513                 return -ERESTARTSYS;
1514         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1515         if (!ctx) {
1516                 rc = -ENOMEM;
1517                 goto open_unlock;
1518         }
1519
1520         v4l2_fh_init(&ctx->fh, video_devdata(file));
1521         file->private_data = &ctx->fh;
1522         ctx->dev = dev;
1523         hdl = &ctx->hdl;
1524         v4l2_ctrl_handler_init(hdl, 4);
1525         v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
1526         v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
1527         v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_ALPHA_COMPONENT,
1528                           0, 255, 1, 255);
1529         if (hdl->error) {
1530                 rc = hdl->error;
1531                 v4l2_ctrl_handler_free(hdl);
1532                 kfree(ctx);
1533                 goto open_unlock;
1534         }
1535         ctx->fh.ctrl_handler = hdl;
1536         v4l2_ctrl_handler_setup(hdl);
1537
1538         ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0];
1539         ctx->q_data[V4L2_M2M_SRC].width = 640;
1540         ctx->q_data[V4L2_M2M_SRC].height = 480;
1541         ctx->q_data[V4L2_M2M_SRC].bytesperline =
1542                 pxp_bytesperline(&formats[0], 640);
1543         ctx->q_data[V4L2_M2M_SRC].sizeimage =
1544                 pxp_sizeimage(&formats[0], 640, 480);
1545         ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
1546         ctx->colorspace = V4L2_COLORSPACE_REC709;
1547
1548         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
1549
1550         if (IS_ERR(ctx->fh.m2m_ctx)) {
1551                 rc = PTR_ERR(ctx->fh.m2m_ctx);
1552
1553                 v4l2_ctrl_handler_free(hdl);
1554                 v4l2_fh_exit(&ctx->fh);
1555                 kfree(ctx);
1556                 goto open_unlock;
1557         }
1558
1559         v4l2_fh_add(&ctx->fh);
1560         atomic_inc(&dev->num_inst);
1561
1562         dprintk(dev, "Created instance: %p, m2m_ctx: %p\n",
1563                 ctx, ctx->fh.m2m_ctx);
1564
1565 open_unlock:
1566         mutex_unlock(&dev->dev_mutex);
1567         return rc;
1568 }
1569
1570 static int pxp_release(struct file *file)
1571 {
1572         struct pxp_dev *dev = video_drvdata(file);
1573         struct pxp_ctx *ctx = file2ctx(file);
1574
1575         dprintk(dev, "Releasing instance %p\n", ctx);
1576
1577         v4l2_fh_del(&ctx->fh);
1578         v4l2_fh_exit(&ctx->fh);
1579         v4l2_ctrl_handler_free(&ctx->hdl);
1580         mutex_lock(&dev->dev_mutex);
1581         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1582         mutex_unlock(&dev->dev_mutex);
1583         kfree(ctx);
1584
1585         atomic_dec(&dev->num_inst);
1586
1587         return 0;
1588 }
1589
1590 static const struct v4l2_file_operations pxp_fops = {
1591         .owner          = THIS_MODULE,
1592         .open           = pxp_open,
1593         .release        = pxp_release,
1594         .poll           = v4l2_m2m_fop_poll,
1595         .unlocked_ioctl = video_ioctl2,
1596         .mmap           = v4l2_m2m_fop_mmap,
1597 };
1598
1599 static const struct video_device pxp_videodev = {
1600         .name           = MEM2MEM_NAME,
1601         .vfl_dir        = VFL_DIR_M2M,
1602         .fops           = &pxp_fops,
1603         .device_caps    = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
1604         .ioctl_ops      = &pxp_ioctl_ops,
1605         .minor          = -1,
1606         .release        = video_device_release_empty,
1607 };
1608
1609 static const struct v4l2_m2m_ops m2m_ops = {
1610         .device_run     = pxp_device_run,
1611         .job_ready      = pxp_job_ready,
1612         .job_abort      = pxp_job_abort,
1613 };
1614
1615 static int pxp_soft_reset(struct pxp_dev *dev)
1616 {
1617         int ret;
1618         u32 val;
1619
1620         writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_CLR);
1621         writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_CLR);
1622
1623         writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_SET);
1624
1625         ret = readl_poll_timeout(dev->mmio + HW_PXP_CTRL, val,
1626                                  val & BM_PXP_CTRL_CLKGATE, 0, 100);
1627         if (ret < 0)
1628                 return ret;
1629
1630         writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_CLR);
1631         writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_CLR);
1632
1633         return 0;
1634 }
1635
1636 static int pxp_probe(struct platform_device *pdev)
1637 {
1638         struct pxp_dev *dev;
1639         struct resource *res;
1640         struct video_device *vfd;
1641         int irq;
1642         int ret;
1643
1644         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
1645         if (!dev)
1646                 return -ENOMEM;
1647
1648         dev->clk = devm_clk_get(&pdev->dev, "axi");
1649         if (IS_ERR(dev->clk)) {
1650                 ret = PTR_ERR(dev->clk);
1651                 dev_err(&pdev->dev, "Failed to get clk: %d\n", ret);
1652                 return ret;
1653         }
1654
1655         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1656         dev->mmio = devm_ioremap_resource(&pdev->dev, res);
1657         if (IS_ERR(dev->mmio))
1658                 return PTR_ERR(dev->mmio);
1659
1660         irq = platform_get_irq(pdev, 0);
1661         if (irq < 0)
1662                 return irq;
1663
1664         ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, pxp_irq_handler,
1665                         IRQF_ONESHOT, dev_name(&pdev->dev), dev);
1666         if (ret < 0) {
1667                 dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
1668                 return ret;
1669         }
1670
1671         ret = clk_prepare_enable(dev->clk);
1672         if (ret < 0)
1673                 return ret;
1674
1675         ret = pxp_soft_reset(dev);
1676         if (ret < 0) {
1677                 dev_err(&pdev->dev, "PXP reset timeout: %d\n", ret);
1678                 goto err_clk;
1679         }
1680
1681         spin_lock_init(&dev->irqlock);
1682
1683         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1684         if (ret)
1685                 goto err_clk;
1686
1687         atomic_set(&dev->num_inst, 0);
1688         mutex_init(&dev->dev_mutex);
1689
1690         dev->vfd = pxp_videodev;
1691         vfd = &dev->vfd;
1692         vfd->lock = &dev->dev_mutex;
1693         vfd->v4l2_dev = &dev->v4l2_dev;
1694
1695         video_set_drvdata(vfd, dev);
1696         snprintf(vfd->name, sizeof(vfd->name), "%s", pxp_videodev.name);
1697         v4l2_info(&dev->v4l2_dev,
1698                         "Device registered as /dev/video%d\n", vfd->num);
1699
1700         platform_set_drvdata(pdev, dev);
1701
1702         dev->m2m_dev = v4l2_m2m_init(&m2m_ops);
1703         if (IS_ERR(dev->m2m_dev)) {
1704                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
1705                 ret = PTR_ERR(dev->m2m_dev);
1706                 goto err_v4l2;
1707         }
1708
1709         ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
1710         if (ret) {
1711                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1712                 goto err_m2m;
1713         }
1714
1715         return 0;
1716
1717 err_m2m:
1718         v4l2_m2m_release(dev->m2m_dev);
1719 err_v4l2:
1720         v4l2_device_unregister(&dev->v4l2_dev);
1721 err_clk:
1722         clk_disable_unprepare(dev->clk);
1723
1724         return ret;
1725 }
1726
1727 static int pxp_remove(struct platform_device *pdev)
1728 {
1729         struct pxp_dev *dev = platform_get_drvdata(pdev);
1730
1731         writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_SET);
1732         writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_SET);
1733
1734         clk_disable_unprepare(dev->clk);
1735
1736         v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME);
1737         video_unregister_device(&dev->vfd);
1738         v4l2_m2m_release(dev->m2m_dev);
1739         v4l2_device_unregister(&dev->v4l2_dev);
1740
1741         return 0;
1742 }
1743
1744 static const struct of_device_id pxp_dt_ids[] = {
1745         { .compatible = "fsl,imx6ull-pxp", .data = NULL },
1746         { },
1747 };
1748 MODULE_DEVICE_TABLE(of, pxp_dt_ids);
1749
1750 static struct platform_driver pxp_driver = {
1751         .probe          = pxp_probe,
1752         .remove         = pxp_remove,
1753         .driver         = {
1754                 .name   = MEM2MEM_NAME,
1755                 .of_match_table = pxp_dt_ids,
1756         },
1757 };
1758
1759 module_platform_driver(pxp_driver);
1760
1761 MODULE_DESCRIPTION("i.MX PXP mem2mem scaler/CSC/rotator");
1762 MODULE_AUTHOR("Philipp Zabel <kernel@pengutronix.de>");
1763 MODULE_LICENSE("GPL");