1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2020 BayLibre, SAS 4 * Author: Neil Armstrong <narmstrong@baylibre.com> 5 */ 6 7 #include <linux/clk.h> 8 #include <linux/delay.h> 9 #include <linux/bitfield.h> 10 #include <linux/interrupt.h> 11 #include <linux/module.h> 12 #include <linux/of.h> 13 #include <linux/reset.h> 14 #include <linux/sched.h> 15 #include <linux/slab.h> 16 #include <linux/timer.h> 17 #include <linux/regmap.h> 18 19 #include <linux/platform_device.h> 20 #include <media/v4l2-device.h> 21 #include <media/v4l2-event.h> 22 #include <media/v4l2-ioctl.h> 23 #include <media/v4l2-mem2mem.h> 24 #include <media/v4l2-ctrls.h> 25 #include <media/videobuf2-v4l2.h> 26 #include <media/videobuf2-dma-contig.h> 27 28 #include "ge2d-regs.h" 29 30 #define GE2D_NAME "meson-ge2d" 31 32 #define DEFAULT_WIDTH 128 33 #define DEFAULT_HEIGHT 128 34 #define DEFAULT_STRIDE 512 35 36 #define MAX_WIDTH 8191 37 #define MAX_HEIGHT 8191 38 39 /* 40 * Missing features: 41 * - Scaling 42 * - Simple 1/2 vertical scaling 43 * - YUV input support 44 * - Source global alpha 45 * - Colorspace conversion 46 */ 47 48 struct ge2d_fmt { 49 u32 fourcc; 50 bool alpha; 51 bool le; 52 unsigned int depth; 53 unsigned int hw_fmt; 54 unsigned int hw_map; 55 }; 56 57 struct ge2d_frame { 58 struct vb2_v4l2_buffer *buf; 59 60 /* Image Format */ 61 struct v4l2_pix_format pix_fmt; 62 63 /* Crop */ 64 struct v4l2_rect crop; 65 66 /* Image format */ 67 const struct ge2d_fmt *fmt; 68 }; 69 70 struct ge2d_ctx { 71 struct v4l2_fh fh; 72 struct meson_ge2d *ge2d; 73 struct ge2d_frame in; 74 struct ge2d_frame out; 75 struct v4l2_ctrl_handler ctrl_handler; 76 77 unsigned long sequence_out, sequence_cap; 78 79 /* Control values */ 80 u32 hflip; 81 u32 vflip; 82 u32 xy_swap; 83 }; 84 85 struct meson_ge2d { 86 struct v4l2_device v4l2_dev; 87 struct v4l2_m2m_dev *m2m_dev; 88 struct video_device *vfd; 89 90 struct device *dev; 91 struct regmap *map; 92 struct clk *clk; 93 94 /* vb2 queue lock */ 95 struct mutex mutex; 96 97 struct ge2d_ctx *curr; 98 }; 99 100 #define FMT(_fourcc, _alpha, _depth, _map) \ 101 { \ 102 .fourcc = _fourcc, \ 103 .alpha = (_alpha), \ 104 .depth = (_depth), \ 105 .hw_fmt = GE2D_FORMAT_ ## _depth ## BIT, \ 106 .hw_map = GE2D_COLOR_MAP_ ## _map, \ 107 } 108 109 /* TOFIX Handle the YUV input formats */ 110 static const struct ge2d_fmt formats[] = { 111 /* FOURCC Alpha HW FMT HW MAP */ 112 FMT(V4L2_PIX_FMT_XRGB32, false, 32, BGRA8888), 113 FMT(V4L2_PIX_FMT_RGB32, true, 32, BGRA8888), 114 FMT(V4L2_PIX_FMT_ARGB32, true, 32, BGRA8888), 115 FMT(V4L2_PIX_FMT_RGBX32, false, 32, ABGR8888), 116 FMT(V4L2_PIX_FMT_RGBA32, true, 32, ABGR8888), 117 FMT(V4L2_PIX_FMT_BGRX32, false, 32, RGBA8888), 118 FMT(V4L2_PIX_FMT_BGRA32, true, 32, RGBA8888), 119 FMT(V4L2_PIX_FMT_BGR32, true, 32, ARGB8888), 120 FMT(V4L2_PIX_FMT_ABGR32, true, 32, ARGB8888), 121 FMT(V4L2_PIX_FMT_XBGR32, false, 32, ARGB8888), 122 123 FMT(V4L2_PIX_FMT_RGB24, false, 24, BGR888), 124 FMT(V4L2_PIX_FMT_BGR24, false, 24, RGB888), 125 126 FMT(V4L2_PIX_FMT_XRGB555X, false, 16, ARGB1555), 127 FMT(V4L2_PIX_FMT_ARGB555X, true, 16, ARGB1555), 128 FMT(V4L2_PIX_FMT_RGB565, false, 16, RGB565), 129 FMT(V4L2_PIX_FMT_RGBX444, false, 16, RGBA4444), 130 FMT(V4L2_PIX_FMT_RGBA444, true, 16, RGBA4444), 131 FMT(V4L2_PIX_FMT_XRGB444, false, 16, ARGB4444), 132 FMT(V4L2_PIX_FMT_ARGB444, true, 16, ARGB4444), 133 }; 134 135 #define NUM_FORMATS ARRAY_SIZE(formats) 136 137 static const struct ge2d_fmt *find_fmt(struct v4l2_format *f) 138 { 139 unsigned int i; 140 141 for (i = 0; i < NUM_FORMATS; i++) { 142 if (formats[i].fourcc == f->fmt.pix.pixelformat) 143 return &formats[i]; 144 } 145 146 /* 147 * TRY_FMT/S_FMT should never return an error when the requested format 148 * is not supported. Drivers should always return a valid format, 149 * preferably a format that is as widely supported by applications as 150 * possible. 151 */ 152 return &formats[0]; 153 } 154 155 static struct ge2d_frame *get_frame(struct ge2d_ctx *ctx, 156 enum v4l2_buf_type type) 157 { 158 switch (type) { 159 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 160 return &ctx->in; 161 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 162 return &ctx->out; 163 default: 164 /* This should never happen, warn and return OUTPUT frame */ 165 dev_warn(ctx->ge2d->dev, "%s: invalid buffer type\n", __func__); 166 return &ctx->in; 167 } 168 } 169 170 static void ge2d_hw_start(struct meson_ge2d *ge2d) 171 { 172 struct ge2d_ctx *ctx = ge2d->curr; 173 u32 reg; 174 175 /* Reset */ 176 regmap_update_bits(ge2d->map, GE2D_GEN_CTRL1, 177 GE2D_SOFT_RST, GE2D_SOFT_RST); 178 regmap_update_bits(ge2d->map, GE2D_GEN_CTRL1, 179 GE2D_SOFT_RST, 0); 180 181 usleep_range(100, 200); 182 183 /* Implement CANVAS for non-AXG */ 184 regmap_write(ge2d->map, GE2D_SRC1_BADDR_CTRL, 185 (vb2_dma_contig_plane_dma_addr(&ctx->in.buf->vb2_buf, 0) + 7) >> 3); 186 regmap_write(ge2d->map, GE2D_SRC1_STRIDE_CTRL, 187 (ctx->in.pix_fmt.bytesperline + 7) >> 3); 188 regmap_write(ge2d->map, GE2D_SRC2_BADDR_CTRL, 189 (vb2_dma_contig_plane_dma_addr(&ctx->out.buf->vb2_buf, 0) + 7) >> 3); 190 regmap_write(ge2d->map, GE2D_SRC2_STRIDE_CTRL, 191 (ctx->out.pix_fmt.bytesperline + 7) >> 3); 192 regmap_write(ge2d->map, GE2D_DST1_BADDR_CTRL, 193 (vb2_dma_contig_plane_dma_addr(&ctx->out.buf->vb2_buf, 0) + 7) >> 3); 194 regmap_write(ge2d->map, GE2D_DST1_STRIDE_CTRL, 195 (ctx->out.pix_fmt.bytesperline + 7) >> 3); 196 197 regmap_write(ge2d->map, GE2D_GEN_CTRL0, 0); 198 regmap_write(ge2d->map, GE2D_GEN_CTRL1, 199 FIELD_PREP(GE2D_INTERRUPT_CTRL, 2) | 200 FIELD_PREP(GE2D_SRC2_BURST_SIZE_CTRL, 3) | 201 FIELD_PREP(GE2D_SRC1_BURST_SIZE_CTRL, 0x3f)); 202 203 regmap_write(ge2d->map, GE2D_GEN_CTRL2, 204 GE2D_SRC1_LITTLE_ENDIAN | 205 GE2D_SRC2_LITTLE_ENDIAN | 206 GE2D_DST_LITTLE_ENDIAN | 207 FIELD_PREP(GE2D_DST1_COLOR_MAP, ctx->out.fmt->hw_map) | 208 FIELD_PREP(GE2D_DST1_FORMAT, ctx->out.fmt->hw_fmt) | 209 FIELD_PREP(GE2D_SRC2_COLOR_MAP, ctx->out.fmt->hw_map) | 210 FIELD_PREP(GE2D_SRC2_FORMAT, ctx->out.fmt->hw_fmt) | 211 FIELD_PREP(GE2D_SRC1_COLOR_MAP, ctx->in.fmt->hw_map) | 212 FIELD_PREP(GE2D_SRC1_FORMAT, ctx->in.fmt->hw_fmt)); 213 regmap_write(ge2d->map, GE2D_GEN_CTRL3, 214 GE2D_DST1_ENABLE); 215 216 regmap_write(ge2d->map, GE2D_SRC1_CLIPY_START_END, 217 FIELD_PREP(GE2D_START, ctx->in.crop.top) | 218 FIELD_PREP(GE2D_END, ctx->in.crop.top + ctx->in.crop.height - 1)); 219 regmap_write(ge2d->map, GE2D_SRC1_CLIPX_START_END, 220 FIELD_PREP(GE2D_START, ctx->in.crop.left) | 221 FIELD_PREP(GE2D_END, ctx->in.crop.left + ctx->in.crop.width - 1)); 222 regmap_write(ge2d->map, GE2D_SRC2_CLIPY_START_END, 223 FIELD_PREP(GE2D_START, ctx->out.crop.top) | 224 FIELD_PREP(GE2D_END, ctx->out.crop.top + ctx->out.crop.height - 1)); 225 regmap_write(ge2d->map, GE2D_SRC2_CLIPX_START_END, 226 FIELD_PREP(GE2D_START, ctx->out.crop.left) | 227 FIELD_PREP(GE2D_END, ctx->out.crop.left + ctx->out.crop.width - 1)); 228 regmap_write(ge2d->map, GE2D_DST_CLIPY_START_END, 229 FIELD_PREP(GE2D_START, ctx->out.crop.top) | 230 FIELD_PREP(GE2D_END, ctx->out.crop.top + ctx->out.crop.height - 1)); 231 regmap_write(ge2d->map, GE2D_DST_CLIPX_START_END, 232 FIELD_PREP(GE2D_START, ctx->out.crop.left) | 233 FIELD_PREP(GE2D_END, ctx->out.crop.left + ctx->out.crop.width - 1)); 234 235 regmap_write(ge2d->map, GE2D_SRC1_Y_START_END, 236 FIELD_PREP(GE2D_END, ctx->in.pix_fmt.height - 1)); 237 regmap_write(ge2d->map, GE2D_SRC1_X_START_END, 238 FIELD_PREP(GE2D_END, ctx->in.pix_fmt.width - 1)); 239 regmap_write(ge2d->map, GE2D_SRC2_Y_START_END, 240 FIELD_PREP(GE2D_END, ctx->out.pix_fmt.height - 1)); 241 regmap_write(ge2d->map, GE2D_SRC2_X_START_END, 242 FIELD_PREP(GE2D_END, ctx->out.pix_fmt.width - 1)); 243 regmap_write(ge2d->map, GE2D_DST_Y_START_END, 244 FIELD_PREP(GE2D_END, ctx->out.pix_fmt.height - 1)); 245 regmap_write(ge2d->map, GE2D_DST_X_START_END, 246 FIELD_PREP(GE2D_END, ctx->out.pix_fmt.width - 1)); 247 248 /* Color, no blend, use source color */ 249 reg = GE2D_ALU_DO_COLOR_OPERATION_LOGIC(LOGIC_OPERATION_COPY, 250 COLOR_FACTOR_SRC_COLOR); 251 252 if (ctx->in.fmt->alpha && ctx->out.fmt->alpha) 253 /* Take source alpha */ 254 reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_COPY, 255 COLOR_FACTOR_SRC_ALPHA); 256 else if (!ctx->out.fmt->alpha) 257 /* Set alpha to 0 */ 258 reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_SET, 259 COLOR_FACTOR_ZERO); 260 else 261 /* Keep original alpha */ 262 reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_COPY, 263 COLOR_FACTOR_DST_ALPHA); 264 265 regmap_write(ge2d->map, GE2D_ALU_OP_CTRL, reg); 266 267 /* Start */ 268 regmap_write(ge2d->map, GE2D_CMD_CTRL, 269 (ctx->xy_swap ? GE2D_DST_XY_SWAP : 0) | 270 (ctx->hflip ? GE2D_SRC1_Y_REV : 0) | 271 (ctx->vflip ? GE2D_SRC1_X_REV : 0) | 272 GE2D_CBUS_CMD_WR); 273 } 274 275 static void device_run(void *priv) 276 { 277 struct ge2d_ctx *ctx = priv; 278 struct meson_ge2d *ge2d = ctx->ge2d; 279 280 ge2d->curr = ctx; 281 282 ctx->in.buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 283 ctx->out.buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); 284 285 ge2d_hw_start(ge2d); 286 } 287 288 static irqreturn_t ge2d_isr(int irq, void *priv) 289 { 290 struct meson_ge2d *ge2d = priv; 291 u32 intr; 292 293 regmap_read(ge2d->map, GE2D_STATUS0, &intr); 294 295 if (!(intr & GE2D_GE2D_BUSY)) { 296 struct vb2_v4l2_buffer *src, *dst; 297 struct ge2d_ctx *ctx = ge2d->curr; 298 299 ge2d->curr = NULL; 300 301 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 302 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 303 304 src->sequence = ctx->sequence_out++; 305 dst->sequence = ctx->sequence_cap++; 306 307 dst->timecode = src->timecode; 308 dst->vb2_buf.timestamp = src->vb2_buf.timestamp; 309 dst->flags = src->flags; 310 311 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE); 312 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE); 313 v4l2_m2m_job_finish(ge2d->m2m_dev, ctx->fh.m2m_ctx); 314 } 315 316 return IRQ_HANDLED; 317 } 318 319 static const struct v4l2_m2m_ops ge2d_m2m_ops = { 320 .device_run = device_run, 321 }; 322 323 static int ge2d_queue_setup(struct vb2_queue *vq, 324 unsigned int *nbuffers, unsigned int *nplanes, 325 unsigned int sizes[], struct device *alloc_devs[]) 326 { 327 struct ge2d_ctx *ctx = vb2_get_drv_priv(vq); 328 struct ge2d_frame *f = get_frame(ctx, vq->type); 329 330 if (*nplanes) 331 return sizes[0] < f->pix_fmt.sizeimage ? -EINVAL : 0; 332 333 sizes[0] = f->pix_fmt.sizeimage; 334 *nplanes = 1; 335 336 return 0; 337 } 338 339 static int ge2d_buf_prepare(struct vb2_buffer *vb) 340 { 341 struct ge2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 342 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 343 struct ge2d_frame *f = get_frame(ctx, vb->vb2_queue->type); 344 345 vbuf->field = V4L2_FIELD_NONE; 346 347 vb2_set_plane_payload(vb, 0, f->pix_fmt.sizeimage); 348 349 return 0; 350 } 351 352 static void ge2d_buf_queue(struct vb2_buffer *vb) 353 { 354 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 355 struct ge2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 356 357 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 358 } 359 360 static int ge2d_start_streaming(struct vb2_queue *vq, unsigned int count) 361 { 362 struct ge2d_ctx *ctx = vb2_get_drv_priv(vq); 363 364 if (V4L2_TYPE_IS_OUTPUT(vq->type)) 365 ctx->sequence_out = 0; 366 else 367 ctx->sequence_cap = 0; 368 369 return 0; 370 } 371 372 static void ge2d_stop_streaming(struct vb2_queue *vq) 373 { 374 struct ge2d_ctx *ctx = vb2_get_drv_priv(vq); 375 struct vb2_v4l2_buffer *vbuf; 376 377 for (;;) { 378 if (V4L2_TYPE_IS_OUTPUT(vq->type)) 379 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 380 else 381 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 382 if (!vbuf) 383 break; 384 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR); 385 } 386 } 387 388 static const struct vb2_ops ge2d_qops = { 389 .queue_setup = ge2d_queue_setup, 390 .buf_prepare = ge2d_buf_prepare, 391 .buf_queue = ge2d_buf_queue, 392 .start_streaming = ge2d_start_streaming, 393 .stop_streaming = ge2d_stop_streaming, 394 }; 395 396 static int 397 queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) 398 { 399 struct ge2d_ctx *ctx = priv; 400 int ret; 401 402 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 403 src_vq->io_modes = VB2_MMAP | VB2_DMABUF; 404 src_vq->drv_priv = ctx; 405 src_vq->ops = &ge2d_qops; 406 src_vq->mem_ops = &vb2_dma_contig_memops; 407 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 408 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 409 src_vq->lock = &ctx->ge2d->mutex; 410 src_vq->dev = ctx->ge2d->v4l2_dev.dev; 411 412 ret = vb2_queue_init(src_vq); 413 if (ret) 414 return ret; 415 416 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 417 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; 418 dst_vq->drv_priv = ctx; 419 dst_vq->ops = &ge2d_qops; 420 dst_vq->mem_ops = &vb2_dma_contig_memops; 421 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 422 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 423 dst_vq->lock = &ctx->ge2d->mutex; 424 dst_vq->dev = ctx->ge2d->v4l2_dev.dev; 425 426 return vb2_queue_init(dst_vq); 427 } 428 429 static int 430 vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) 431 { 432 strscpy(cap->driver, GE2D_NAME, sizeof(cap->driver)); 433 strscpy(cap->card, GE2D_NAME, sizeof(cap->card)); 434 strscpy(cap->bus_info, "platform:" GE2D_NAME, sizeof(cap->bus_info)); 435 436 return 0; 437 } 438 439 static int vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) 440 { 441 const struct ge2d_fmt *fmt; 442 443 if (f->index >= NUM_FORMATS) 444 return -EINVAL; 445 446 fmt = &formats[f->index]; 447 f->pixelformat = fmt->fourcc; 448 449 return 0; 450 } 451 452 static int vidioc_g_selection(struct file *file, void *priv, 453 struct v4l2_selection *s) 454 { 455 struct ge2d_ctx *ctx = priv; 456 struct ge2d_frame *f; 457 bool use_frame = false; 458 459 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && 460 s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 461 return -EINVAL; 462 463 f = get_frame(ctx, s->type); 464 465 switch (s->target) { 466 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 467 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 468 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 469 return -EINVAL; 470 break; 471 case V4L2_SEL_TGT_CROP_DEFAULT: 472 case V4L2_SEL_TGT_CROP_BOUNDS: 473 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 474 return -EINVAL; 475 break; 476 case V4L2_SEL_TGT_COMPOSE: 477 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 478 return -EINVAL; 479 use_frame = true; 480 break; 481 case V4L2_SEL_TGT_CROP: 482 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 483 return -EINVAL; 484 use_frame = true; 485 break; 486 default: 487 return -EINVAL; 488 } 489 490 if (use_frame) { 491 s->r = f->crop; 492 } else { 493 s->r.left = 0; 494 s->r.top = 0; 495 s->r.width = f->pix_fmt.width; 496 s->r.height = f->pix_fmt.height; 497 } 498 499 return 0; 500 } 501 502 static int vidioc_s_selection(struct file *file, void *priv, 503 struct v4l2_selection *s) 504 { 505 struct ge2d_ctx *ctx = priv; 506 struct meson_ge2d *ge2d = ctx->ge2d; 507 struct ge2d_frame *f; 508 int ret = 0; 509 510 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && 511 s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 512 return -EINVAL; 513 514 f = get_frame(ctx, s->type); 515 516 switch (s->target) { 517 case V4L2_SEL_TGT_COMPOSE: 518 /* 519 * COMPOSE target is only valid for capture buffer type, return 520 * error for output buffer type 521 */ 522 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 523 return -EINVAL; 524 break; 525 case V4L2_SEL_TGT_CROP: 526 /* 527 * CROP target is only valid for output buffer type, return 528 * error for capture buffer type 529 */ 530 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 531 return -EINVAL; 532 break; 533 /* 534 * bound and default crop/compose targets are invalid targets to 535 * try/set 536 */ 537 default: 538 return -EINVAL; 539 } 540 541 if (s->r.top < 0 || s->r.left < 0) { 542 v4l2_err(&ge2d->v4l2_dev, 543 "doesn't support negative values for top & left.\n"); 544 return -EINVAL; 545 } 546 547 if (s->r.left + s->r.width > f->pix_fmt.width || 548 s->r.top + s->r.height > f->pix_fmt.height) { 549 v4l2_err(&ge2d->v4l2_dev, "unsupported rectangle value.\n"); 550 return -EINVAL; 551 } 552 553 f->crop = s->r; 554 555 return ret; 556 } 557 558 static void vidioc_setup_cap_fmt(struct ge2d_ctx *ctx, struct v4l2_pix_format *f) 559 { 560 struct ge2d_frame *frm_out = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 561 562 *f = frm_out->pix_fmt; 563 564 if (ctx->xy_swap) { 565 f->width = frm_out->pix_fmt.height; 566 f->height = frm_out->pix_fmt.width; 567 } 568 } 569 570 static int vidioc_try_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) 571 { 572 const struct ge2d_fmt *fmt = find_fmt(f); 573 struct ge2d_ctx *ctx = priv; 574 struct v4l2_pix_format fmt_cap; 575 576 vidioc_setup_cap_fmt(ctx, &fmt_cap); 577 578 fmt_cap.pixelformat = fmt->fourcc; 579 580 fmt_cap.bytesperline = max(f->fmt.pix.bytesperline, 581 ALIGN((fmt_cap.width * fmt->depth) >> 3, 8)); 582 583 fmt_cap.sizeimage = max(f->fmt.pix.sizeimage, 584 fmt_cap.height * fmt_cap.bytesperline); 585 586 f->fmt.pix = fmt_cap; 587 588 return 0; 589 } 590 591 static int vidioc_s_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) 592 { 593 struct ge2d_ctx *ctx = priv; 594 struct meson_ge2d *ge2d = ctx->ge2d; 595 struct vb2_queue *vq; 596 struct ge2d_frame *frm; 597 int ret = 0; 598 599 /* Adjust all values accordingly to the hardware capabilities 600 * and chosen format. 601 */ 602 ret = vidioc_try_fmt_cap(file, priv, f); 603 if (ret) 604 return ret; 605 606 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 607 if (vb2_is_busy(vq)) { 608 v4l2_err(&ge2d->v4l2_dev, "queue (%d) bust\n", f->type); 609 return -EBUSY; 610 } 611 612 frm = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 613 614 frm->pix_fmt = f->fmt.pix; 615 frm->fmt = find_fmt(f); 616 f->fmt.pix.pixelformat = frm->fmt->fourcc; 617 618 /* Reset crop settings */ 619 frm->crop.left = 0; 620 frm->crop.top = 0; 621 frm->crop.width = frm->pix_fmt.width; 622 frm->crop.height = frm->pix_fmt.height; 623 624 return 0; 625 } 626 627 static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) 628 { 629 struct ge2d_ctx *ctx = priv; 630 struct vb2_queue *vq; 631 struct ge2d_frame *frm; 632 633 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 634 if (!vq) 635 return -EINVAL; 636 637 frm = get_frame(ctx, f->type); 638 639 f->fmt.pix = frm->pix_fmt; 640 f->fmt.pix.pixelformat = frm->fmt->fourcc; 641 642 return 0; 643 } 644 645 static int vidioc_try_fmt_out(struct file *file, void *priv, struct v4l2_format *f) 646 { 647 const struct ge2d_fmt *fmt = find_fmt(f); 648 649 f->fmt.pix.field = V4L2_FIELD_NONE; 650 f->fmt.pix.pixelformat = fmt->fourcc; 651 652 if (f->fmt.pix.width > MAX_WIDTH) 653 f->fmt.pix.width = MAX_WIDTH; 654 if (f->fmt.pix.height > MAX_HEIGHT) 655 f->fmt.pix.height = MAX_HEIGHT; 656 657 f->fmt.pix.bytesperline = max(f->fmt.pix.bytesperline, 658 ALIGN((f->fmt.pix.width * fmt->depth) >> 3, 8)); 659 660 f->fmt.pix.sizeimage = max(f->fmt.pix.sizeimage, 661 f->fmt.pix.height * f->fmt.pix.bytesperline); 662 663 return 0; 664 } 665 666 static int vidioc_s_fmt_out(struct file *file, void *priv, struct v4l2_format *f) 667 { 668 struct ge2d_ctx *ctx = priv; 669 struct meson_ge2d *ge2d = ctx->ge2d; 670 struct vb2_queue *vq; 671 struct ge2d_frame *frm, *frm_cap; 672 int ret = 0; 673 674 /* Adjust all values accordingly to the hardware capabilities 675 * and chosen format. 676 */ 677 ret = vidioc_try_fmt_out(file, priv, f); 678 if (ret) 679 return ret; 680 681 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 682 if (vb2_is_busy(vq)) { 683 v4l2_err(&ge2d->v4l2_dev, "queue (%d) bust\n", f->type); 684 return -EBUSY; 685 } 686 687 frm = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 688 frm_cap = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 689 690 frm->pix_fmt = f->fmt.pix; 691 frm->fmt = find_fmt(f); 692 f->fmt.pix.pixelformat = frm->fmt->fourcc; 693 694 /* Reset crop settings */ 695 frm->crop.left = 0; 696 frm->crop.top = 0; 697 frm->crop.width = frm->pix_fmt.width; 698 frm->crop.height = frm->pix_fmt.height; 699 700 /* Propagate settings to capture */ 701 vidioc_setup_cap_fmt(ctx, &frm_cap->pix_fmt); 702 703 return 0; 704 } 705 706 static const struct v4l2_ioctl_ops ge2d_ioctl_ops = { 707 .vidioc_querycap = vidioc_querycap, 708 709 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, 710 .vidioc_g_fmt_vid_cap = vidioc_g_fmt, 711 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_cap, 712 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_cap, 713 714 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, 715 .vidioc_g_fmt_vid_out = vidioc_g_fmt, 716 .vidioc_try_fmt_vid_out = vidioc_try_fmt_out, 717 .vidioc_s_fmt_vid_out = vidioc_s_fmt_out, 718 719 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, 720 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, 721 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, 722 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, 723 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, 724 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, 725 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, 726 727 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 728 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 729 730 .vidioc_streamon = v4l2_m2m_ioctl_streamon, 731 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, 732 733 .vidioc_g_selection = vidioc_g_selection, 734 .vidioc_s_selection = vidioc_s_selection, 735 }; 736 737 static int ge2d_s_ctrl(struct v4l2_ctrl *ctrl) 738 { 739 struct ge2d_ctx *ctx = container_of(ctrl->handler, struct ge2d_ctx, 740 ctrl_handler); 741 struct v4l2_pix_format fmt; 742 struct vb2_queue *vq; 743 744 switch (ctrl->id) { 745 case V4L2_CID_HFLIP: 746 ctx->hflip = ctrl->val; 747 break; 748 case V4L2_CID_VFLIP: 749 ctx->vflip = ctrl->val; 750 break; 751 case V4L2_CID_ROTATE: 752 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 753 if (vb2_is_busy(vq)) 754 return -EBUSY; 755 756 if (ctrl->val == 90) { 757 ctx->hflip = 0; 758 ctx->vflip = 1; 759 ctx->xy_swap = 1; 760 } else if (ctrl->val == 180) { 761 ctx->hflip = 1; 762 ctx->vflip = 1; 763 ctx->xy_swap = 0; 764 } else if (ctrl->val == 270) { 765 ctx->hflip = 1; 766 ctx->vflip = 0; 767 ctx->xy_swap = 1; 768 } else { 769 ctx->hflip = 0; 770 ctx->vflip = 0; 771 ctx->xy_swap = 0; 772 } 773 774 vidioc_setup_cap_fmt(ctx, &fmt); 775 776 /* 777 * If the rotation parameter changes the OUTPUT frames 778 * parameters, take them in account 779 */ 780 ctx->out.pix_fmt = fmt; 781 782 break; 783 } 784 785 return 0; 786 } 787 788 static const struct v4l2_ctrl_ops ge2d_ctrl_ops = { 789 .s_ctrl = ge2d_s_ctrl, 790 }; 791 792 static int ge2d_setup_ctrls(struct ge2d_ctx *ctx) 793 { 794 struct meson_ge2d *ge2d = ctx->ge2d; 795 796 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 4); 797 798 v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops, 799 V4L2_CID_HFLIP, 0, 1, 1, 0); 800 801 v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops, 802 V4L2_CID_VFLIP, 0, 1, 1, 0); 803 804 v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops, 805 V4L2_CID_ROTATE, 0, 270, 90, 0); 806 807 if (ctx->ctrl_handler.error) { 808 int err = ctx->ctrl_handler.error; 809 810 v4l2_err(&ge2d->v4l2_dev, "%s failed\n", __func__); 811 v4l2_ctrl_handler_free(&ctx->ctrl_handler); 812 return err; 813 } 814 815 return 0; 816 } 817 818 static const struct ge2d_frame def_frame = { 819 .pix_fmt = { 820 .width = DEFAULT_WIDTH, 821 .height = DEFAULT_HEIGHT, 822 .bytesperline = DEFAULT_STRIDE, 823 .sizeimage = DEFAULT_STRIDE * DEFAULT_HEIGHT, 824 .field = V4L2_FIELD_NONE, 825 }, 826 .crop.width = DEFAULT_WIDTH, 827 .crop.height = DEFAULT_HEIGHT, 828 .fmt = &formats[0], 829 }; 830 831 static int ge2d_open(struct file *file) 832 { 833 struct meson_ge2d *ge2d = video_drvdata(file); 834 struct ge2d_ctx *ctx = NULL; 835 int ret = 0; 836 837 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 838 if (!ctx) 839 return -ENOMEM; 840 ctx->ge2d = ge2d; 841 842 /* Set default formats */ 843 ctx->in = def_frame; 844 ctx->out = def_frame; 845 846 if (mutex_lock_interruptible(&ge2d->mutex)) { 847 kfree(ctx); 848 return -ERESTARTSYS; 849 } 850 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(ge2d->m2m_dev, ctx, &queue_init); 851 if (IS_ERR(ctx->fh.m2m_ctx)) { 852 ret = PTR_ERR(ctx->fh.m2m_ctx); 853 mutex_unlock(&ge2d->mutex); 854 kfree(ctx); 855 return ret; 856 } 857 v4l2_fh_init(&ctx->fh, video_devdata(file)); 858 file->private_data = &ctx->fh; 859 v4l2_fh_add(&ctx->fh); 860 861 ge2d_setup_ctrls(ctx); 862 863 /* Write the default values to the ctx struct */ 864 v4l2_ctrl_handler_setup(&ctx->ctrl_handler); 865 866 ctx->fh.ctrl_handler = &ctx->ctrl_handler; 867 mutex_unlock(&ge2d->mutex); 868 869 return 0; 870 } 871 872 static int ge2d_release(struct file *file) 873 { 874 struct ge2d_ctx *ctx = 875 container_of(file->private_data, struct ge2d_ctx, fh); 876 struct meson_ge2d *ge2d = ctx->ge2d; 877 878 mutex_lock(&ge2d->mutex); 879 880 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); 881 882 v4l2_ctrl_handler_free(&ctx->ctrl_handler); 883 v4l2_fh_del(&ctx->fh); 884 v4l2_fh_exit(&ctx->fh); 885 kfree(ctx); 886 887 mutex_unlock(&ge2d->mutex); 888 889 return 0; 890 } 891 892 static const struct v4l2_file_operations ge2d_fops = { 893 .owner = THIS_MODULE, 894 .open = ge2d_open, 895 .release = ge2d_release, 896 .poll = v4l2_m2m_fop_poll, 897 .unlocked_ioctl = video_ioctl2, 898 .mmap = v4l2_m2m_fop_mmap, 899 }; 900 901 static const struct video_device ge2d_videodev = { 902 .name = "meson-ge2d", 903 .fops = &ge2d_fops, 904 .ioctl_ops = &ge2d_ioctl_ops, 905 .minor = -1, 906 .release = video_device_release, 907 .vfl_dir = VFL_DIR_M2M, 908 .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING, 909 }; 910 911 static const struct regmap_config meson_ge2d_regmap_conf = { 912 .reg_bits = 8, 913 .val_bits = 32, 914 .reg_stride = 4, 915 .max_register = GE2D_SRC2_STRIDE_CTRL, 916 }; 917 918 static int ge2d_probe(struct platform_device *pdev) 919 { 920 struct reset_control *rst; 921 struct video_device *vfd; 922 struct meson_ge2d *ge2d; 923 void __iomem *regs; 924 int ret = 0; 925 int irq; 926 927 if (!pdev->dev.of_node) 928 return -ENODEV; 929 930 ge2d = devm_kzalloc(&pdev->dev, sizeof(*ge2d), GFP_KERNEL); 931 if (!ge2d) 932 return -ENOMEM; 933 934 ge2d->dev = &pdev->dev; 935 mutex_init(&ge2d->mutex); 936 937 regs = devm_platform_ioremap_resource(pdev, 0); 938 if (IS_ERR(regs)) 939 return PTR_ERR(regs); 940 941 ge2d->map = devm_regmap_init_mmio(ge2d->dev, regs, 942 &meson_ge2d_regmap_conf); 943 if (IS_ERR(ge2d->map)) 944 return PTR_ERR(ge2d->map); 945 946 irq = platform_get_irq(pdev, 0); 947 ret = devm_request_irq(ge2d->dev, irq, ge2d_isr, 0, 948 dev_name(ge2d->dev), ge2d); 949 if (ret < 0) { 950 dev_err(ge2d->dev, "failed to request irq\n"); 951 return ret; 952 } 953 954 rst = devm_reset_control_get(ge2d->dev, NULL); 955 if (IS_ERR(rst)) { 956 dev_err(ge2d->dev, "failed to get core reset controller\n"); 957 return PTR_ERR(rst); 958 } 959 960 ge2d->clk = devm_clk_get(ge2d->dev, NULL); 961 if (IS_ERR(ge2d->clk)) { 962 dev_err(ge2d->dev, "failed to get clock\n"); 963 return PTR_ERR(ge2d->clk); 964 } 965 966 reset_control_assert(rst); 967 udelay(1); 968 reset_control_deassert(rst); 969 970 ret = clk_prepare_enable(ge2d->clk); 971 if (ret) { 972 dev_err(ge2d->dev, "Cannot enable ge2d sclk: %d\n", ret); 973 return ret; 974 } 975 976 ret = v4l2_device_register(&pdev->dev, &ge2d->v4l2_dev); 977 if (ret) 978 goto disable_clks; 979 980 vfd = video_device_alloc(); 981 if (!vfd) { 982 v4l2_err(&ge2d->v4l2_dev, "Failed to allocate video device\n"); 983 ret = -ENOMEM; 984 goto unreg_v4l2_dev; 985 } 986 987 *vfd = ge2d_videodev; 988 vfd->lock = &ge2d->mutex; 989 vfd->v4l2_dev = &ge2d->v4l2_dev; 990 991 video_set_drvdata(vfd, ge2d); 992 ge2d->vfd = vfd; 993 994 platform_set_drvdata(pdev, ge2d); 995 ge2d->m2m_dev = v4l2_m2m_init(&ge2d_m2m_ops); 996 if (IS_ERR(ge2d->m2m_dev)) { 997 v4l2_err(&ge2d->v4l2_dev, "Failed to init mem2mem device\n"); 998 ret = PTR_ERR(ge2d->m2m_dev); 999 goto rel_vdev; 1000 } 1001 1002 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1); 1003 if (ret) { 1004 v4l2_err(&ge2d->v4l2_dev, "Failed to register video device\n"); 1005 goto rel_m2m; 1006 } 1007 1008 v4l2_info(&ge2d->v4l2_dev, "Registered %s as /dev/%s\n", 1009 vfd->name, video_device_node_name(vfd)); 1010 1011 return 0; 1012 1013 rel_m2m: 1014 v4l2_m2m_release(ge2d->m2m_dev); 1015 rel_vdev: 1016 video_device_release(ge2d->vfd); 1017 unreg_v4l2_dev: 1018 v4l2_device_unregister(&ge2d->v4l2_dev); 1019 disable_clks: 1020 clk_disable_unprepare(ge2d->clk); 1021 1022 return ret; 1023 } 1024 1025 static void ge2d_remove(struct platform_device *pdev) 1026 { 1027 struct meson_ge2d *ge2d = platform_get_drvdata(pdev); 1028 1029 video_unregister_device(ge2d->vfd); 1030 v4l2_m2m_release(ge2d->m2m_dev); 1031 v4l2_device_unregister(&ge2d->v4l2_dev); 1032 clk_disable_unprepare(ge2d->clk); 1033 } 1034 1035 static const struct of_device_id meson_ge2d_match[] = { 1036 { 1037 .compatible = "amlogic,axg-ge2d", 1038 }, 1039 {}, 1040 }; 1041 1042 MODULE_DEVICE_TABLE(of, meson_ge2d_match); 1043 1044 static struct platform_driver ge2d_drv = { 1045 .probe = ge2d_probe, 1046 .remove = ge2d_remove, 1047 .driver = { 1048 .name = "meson-ge2d", 1049 .of_match_table = meson_ge2d_match, 1050 }, 1051 }; 1052 1053 module_platform_driver(ge2d_drv); 1054 1055 MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); 1056 MODULE_DESCRIPTION("Amlogic 2D Graphic Acceleration Unit"); 1057 MODULE_LICENSE("GPL"); 1058