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 48struct 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 57struct 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 70struct 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 85struct 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 */ 110static 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 137static 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 155static 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 170static 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 275static 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 288static 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 319static const struct v4l2_m2m_ops ge2d_m2m_ops = { 320 .device_run = device_run, 321}; 322 323static 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 339static 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 352static 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 360static 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 372static 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 388static 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 .wait_prepare = vb2_ops_wait_prepare, 395 .wait_finish = vb2_ops_wait_finish, 396}; 397 398static int 399queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) 400{ 401 struct ge2d_ctx *ctx = priv; 402 int ret; 403 404 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 405 src_vq->io_modes = VB2_MMAP | VB2_DMABUF; 406 src_vq->drv_priv = ctx; 407 src_vq->ops = &ge2d_qops; 408 src_vq->mem_ops = &vb2_dma_contig_memops; 409 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 410 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 411 src_vq->lock = &ctx->ge2d->mutex; 412 src_vq->dev = ctx->ge2d->v4l2_dev.dev; 413 414 ret = vb2_queue_init(src_vq); 415 if (ret) 416 return ret; 417 418 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 419 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; 420 dst_vq->drv_priv = ctx; 421 dst_vq->ops = &ge2d_qops; 422 dst_vq->mem_ops = &vb2_dma_contig_memops; 423 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 424 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 425 dst_vq->lock = &ctx->ge2d->mutex; 426 dst_vq->dev = ctx->ge2d->v4l2_dev.dev; 427 428 return vb2_queue_init(dst_vq); 429} 430 431static int 432vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) 433{ 434 strscpy(cap->driver, GE2D_NAME, sizeof(cap->driver)); 435 strscpy(cap->card, GE2D_NAME, sizeof(cap->card)); 436 strscpy(cap->bus_info, "platform:" GE2D_NAME, sizeof(cap->bus_info)); 437 438 return 0; 439} 440 441static int vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) 442{ 443 const struct ge2d_fmt *fmt; 444 445 if (f->index >= NUM_FORMATS) 446 return -EINVAL; 447 448 fmt = &formats[f->index]; 449 f->pixelformat = fmt->fourcc; 450 451 return 0; 452} 453 454static int vidioc_g_selection(struct file *file, void *priv, 455 struct v4l2_selection *s) 456{ 457 struct ge2d_ctx *ctx = priv; 458 struct ge2d_frame *f; 459 bool use_frame = false; 460 461 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && 462 s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 463 return -EINVAL; 464 465 f = get_frame(ctx, s->type); 466 467 switch (s->target) { 468 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 469 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 470 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 471 return -EINVAL; 472 break; 473 case V4L2_SEL_TGT_CROP_DEFAULT: 474 case V4L2_SEL_TGT_CROP_BOUNDS: 475 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 476 return -EINVAL; 477 break; 478 case V4L2_SEL_TGT_COMPOSE: 479 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 480 return -EINVAL; 481 use_frame = true; 482 break; 483 case V4L2_SEL_TGT_CROP: 484 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 485 return -EINVAL; 486 use_frame = true; 487 break; 488 default: 489 return -EINVAL; 490 } 491 492 if (use_frame) { 493 s->r = f->crop; 494 } else { 495 s->r.left = 0; 496 s->r.top = 0; 497 s->r.width = f->pix_fmt.width; 498 s->r.height = f->pix_fmt.height; 499 } 500 501 return 0; 502} 503 504static int vidioc_s_selection(struct file *file, void *priv, 505 struct v4l2_selection *s) 506{ 507 struct ge2d_ctx *ctx = priv; 508 struct meson_ge2d *ge2d = ctx->ge2d; 509 struct ge2d_frame *f; 510 int ret = 0; 511 512 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && 513 s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 514 return -EINVAL; 515 516 f = get_frame(ctx, s->type); 517 518 switch (s->target) { 519 case V4L2_SEL_TGT_COMPOSE: 520 /* 521 * COMPOSE target is only valid for capture buffer type, return 522 * error for output buffer type 523 */ 524 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 525 return -EINVAL; 526 break; 527 case V4L2_SEL_TGT_CROP: 528 /* 529 * CROP target is only valid for output buffer type, return 530 * error for capture buffer type 531 */ 532 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 533 return -EINVAL; 534 break; 535 /* 536 * bound and default crop/compose targets are invalid targets to 537 * try/set 538 */ 539 default: 540 return -EINVAL; 541 } 542 543 if (s->r.top < 0 || s->r.left < 0) { 544 v4l2_err(&ge2d->v4l2_dev, 545 "doesn't support negative values for top & left.\n"); 546 return -EINVAL; 547 } 548 549 if (s->r.left + s->r.width > f->pix_fmt.width || 550 s->r.top + s->r.height > f->pix_fmt.height) { 551 v4l2_err(&ge2d->v4l2_dev, "unsupported rectangle value.\n"); 552 return -EINVAL; 553 } 554 555 f->crop = s->r; 556 557 return ret; 558} 559 560static void vidioc_setup_cap_fmt(struct ge2d_ctx *ctx, struct v4l2_pix_format *f) 561{ 562 struct ge2d_frame *frm_out = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 563 564 *f = frm_out->pix_fmt; 565 566 if (ctx->xy_swap) { 567 f->width = frm_out->pix_fmt.height; 568 f->height = frm_out->pix_fmt.width; 569 } 570} 571 572static int vidioc_try_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) 573{ 574 const struct ge2d_fmt *fmt = find_fmt(f); 575 struct ge2d_ctx *ctx = priv; 576 struct v4l2_pix_format fmt_cap; 577 578 vidioc_setup_cap_fmt(ctx, &fmt_cap); 579 580 fmt_cap.pixelformat = fmt->fourcc; 581 582 fmt_cap.bytesperline = max(f->fmt.pix.bytesperline, 583 ALIGN((fmt_cap.width * fmt->depth) >> 3, 8)); 584 585 fmt_cap.sizeimage = max(f->fmt.pix.sizeimage, 586 fmt_cap.height * fmt_cap.bytesperline); 587 588 f->fmt.pix = fmt_cap; 589 590 return 0; 591} 592 593static int vidioc_s_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) 594{ 595 struct ge2d_ctx *ctx = priv; 596 struct meson_ge2d *ge2d = ctx->ge2d; 597 struct vb2_queue *vq; 598 struct ge2d_frame *frm; 599 int ret = 0; 600 601 /* Adjust all values accordingly to the hardware capabilities 602 * and chosen format. 603 */ 604 ret = vidioc_try_fmt_cap(file, priv, f); 605 if (ret) 606 return ret; 607 608 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 609 if (vb2_is_busy(vq)) { 610 v4l2_err(&ge2d->v4l2_dev, "queue (%d) bust\n", f->type); 611 return -EBUSY; 612 } 613 614 frm = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 615 616 frm->pix_fmt = f->fmt.pix; 617 frm->fmt = find_fmt(f); 618 f->fmt.pix.pixelformat = frm->fmt->fourcc; 619 620 /* Reset crop settings */ 621 frm->crop.left = 0; 622 frm->crop.top = 0; 623 frm->crop.width = frm->pix_fmt.width; 624 frm->crop.height = frm->pix_fmt.height; 625 626 return 0; 627} 628 629static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) 630{ 631 struct ge2d_ctx *ctx = priv; 632 struct vb2_queue *vq; 633 struct ge2d_frame *frm; 634 635 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 636 if (!vq) 637 return -EINVAL; 638 639 frm = get_frame(ctx, f->type); 640 641 f->fmt.pix = frm->pix_fmt; 642 f->fmt.pix.pixelformat = frm->fmt->fourcc; 643 644 return 0; 645} 646 647static int vidioc_try_fmt_out(struct file *file, void *priv, struct v4l2_format *f) 648{ 649 const struct ge2d_fmt *fmt = find_fmt(f); 650 651 f->fmt.pix.field = V4L2_FIELD_NONE; 652 f->fmt.pix.pixelformat = fmt->fourcc; 653 654 if (f->fmt.pix.width > MAX_WIDTH) 655 f->fmt.pix.width = MAX_WIDTH; 656 if (f->fmt.pix.height > MAX_HEIGHT) 657 f->fmt.pix.height = MAX_HEIGHT; 658 659 f->fmt.pix.bytesperline = max(f->fmt.pix.bytesperline, 660 ALIGN((f->fmt.pix.width * fmt->depth) >> 3, 8)); 661 662 f->fmt.pix.sizeimage = max(f->fmt.pix.sizeimage, 663 f->fmt.pix.height * f->fmt.pix.bytesperline); 664 665 return 0; 666} 667 668static int vidioc_s_fmt_out(struct file *file, void *priv, struct v4l2_format *f) 669{ 670 struct ge2d_ctx *ctx = priv; 671 struct meson_ge2d *ge2d = ctx->ge2d; 672 struct vb2_queue *vq; 673 struct ge2d_frame *frm, *frm_cap; 674 int ret = 0; 675 676 /* Adjust all values accordingly to the hardware capabilities 677 * and chosen format. 678 */ 679 ret = vidioc_try_fmt_out(file, priv, f); 680 if (ret) 681 return ret; 682 683 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 684 if (vb2_is_busy(vq)) { 685 v4l2_err(&ge2d->v4l2_dev, "queue (%d) bust\n", f->type); 686 return -EBUSY; 687 } 688 689 frm = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 690 frm_cap = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 691 692 frm->pix_fmt = f->fmt.pix; 693 frm->fmt = find_fmt(f); 694 f->fmt.pix.pixelformat = frm->fmt->fourcc; 695 696 /* Reset crop settings */ 697 frm->crop.left = 0; 698 frm->crop.top = 0; 699 frm->crop.width = frm->pix_fmt.width; 700 frm->crop.height = frm->pix_fmt.height; 701 702 /* Propagate settings to capture */ 703 vidioc_setup_cap_fmt(ctx, &frm_cap->pix_fmt); 704 705 return 0; 706} 707 708static const struct v4l2_ioctl_ops ge2d_ioctl_ops = { 709 .vidioc_querycap = vidioc_querycap, 710 711 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, 712 .vidioc_g_fmt_vid_cap = vidioc_g_fmt, 713 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_cap, 714 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_cap, 715 716 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, 717 .vidioc_g_fmt_vid_out = vidioc_g_fmt, 718 .vidioc_try_fmt_vid_out = vidioc_try_fmt_out, 719 .vidioc_s_fmt_vid_out = vidioc_s_fmt_out, 720 721 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, 722 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, 723 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, 724 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, 725 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, 726 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, 727 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, 728 729 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 730 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 731 732 .vidioc_streamon = v4l2_m2m_ioctl_streamon, 733 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, 734 735 .vidioc_g_selection = vidioc_g_selection, 736 .vidioc_s_selection = vidioc_s_selection, 737}; 738 739static int ge2d_s_ctrl(struct v4l2_ctrl *ctrl) 740{ 741 struct ge2d_ctx *ctx = container_of(ctrl->handler, struct ge2d_ctx, 742 ctrl_handler); 743 struct v4l2_pix_format fmt; 744 struct vb2_queue *vq; 745 746 switch (ctrl->id) { 747 case V4L2_CID_HFLIP: 748 ctx->hflip = ctrl->val; 749 break; 750 case V4L2_CID_VFLIP: 751 ctx->vflip = ctrl->val; 752 break; 753 case V4L2_CID_ROTATE: 754 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 755 if (vb2_is_busy(vq)) 756 return -EBUSY; 757 758 if (ctrl->val == 90) { 759 ctx->hflip = 0; 760 ctx->vflip = 1; 761 ctx->xy_swap = 1; 762 } else if (ctrl->val == 180) { 763 ctx->hflip = 1; 764 ctx->vflip = 1; 765 ctx->xy_swap = 0; 766 } else if (ctrl->val == 270) { 767 ctx->hflip = 1; 768 ctx->vflip = 0; 769 ctx->xy_swap = 1; 770 } else { 771 ctx->hflip = 0; 772 ctx->vflip = 0; 773 ctx->xy_swap = 0; 774 } 775 776 vidioc_setup_cap_fmt(ctx, &fmt); 777 778 /* 779 * If the rotation parameter changes the OUTPUT frames 780 * parameters, take them in account 781 */ 782 ctx->out.pix_fmt = fmt; 783 784 break; 785 } 786 787 return 0; 788} 789 790static const struct v4l2_ctrl_ops ge2d_ctrl_ops = { 791 .s_ctrl = ge2d_s_ctrl, 792}; 793 794static int ge2d_setup_ctrls(struct ge2d_ctx *ctx) 795{ 796 struct meson_ge2d *ge2d = ctx->ge2d; 797 798 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 4); 799 800 v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops, 801 V4L2_CID_HFLIP, 0, 1, 1, 0); 802 803 v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops, 804 V4L2_CID_VFLIP, 0, 1, 1, 0); 805 806 v4l2_ctrl_new_std(&ctx->ctrl_handler, &ge2d_ctrl_ops, 807 V4L2_CID_ROTATE, 0, 270, 90, 0); 808 809 if (ctx->ctrl_handler.error) { 810 int err = ctx->ctrl_handler.error; 811 812 v4l2_err(&ge2d->v4l2_dev, "%s failed\n", __func__); 813 v4l2_ctrl_handler_free(&ctx->ctrl_handler); 814 return err; 815 } 816 817 return 0; 818} 819 820static const struct ge2d_frame def_frame = { 821 .pix_fmt = { 822 .width = DEFAULT_WIDTH, 823 .height = DEFAULT_HEIGHT, 824 .bytesperline = DEFAULT_STRIDE, 825 .sizeimage = DEFAULT_STRIDE * DEFAULT_HEIGHT, 826 .field = V4L2_FIELD_NONE, 827 }, 828 .crop.width = DEFAULT_WIDTH, 829 .crop.height = DEFAULT_HEIGHT, 830 .fmt = &formats[0], 831}; 832 833static int ge2d_open(struct file *file) 834{ 835 struct meson_ge2d *ge2d = video_drvdata(file); 836 struct ge2d_ctx *ctx = NULL; 837 int ret = 0; 838 839 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 840 if (!ctx) 841 return -ENOMEM; 842 ctx->ge2d = ge2d; 843 844 /* Set default formats */ 845 ctx->in = def_frame; 846 ctx->out = def_frame; 847 848 if (mutex_lock_interruptible(&ge2d->mutex)) { 849 kfree(ctx); 850 return -ERESTARTSYS; 851 } 852 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(ge2d->m2m_dev, ctx, &queue_init); 853 if (IS_ERR(ctx->fh.m2m_ctx)) { 854 ret = PTR_ERR(ctx->fh.m2m_ctx); 855 mutex_unlock(&ge2d->mutex); 856 kfree(ctx); 857 return ret; 858 } 859 v4l2_fh_init(&ctx->fh, video_devdata(file)); 860 file->private_data = &ctx->fh; 861 v4l2_fh_add(&ctx->fh); 862 863 ge2d_setup_ctrls(ctx); 864 865 /* Write the default values to the ctx struct */ 866 v4l2_ctrl_handler_setup(&ctx->ctrl_handler); 867 868 ctx->fh.ctrl_handler = &ctx->ctrl_handler; 869 mutex_unlock(&ge2d->mutex); 870 871 return 0; 872} 873 874static int ge2d_release(struct file *file) 875{ 876 struct ge2d_ctx *ctx = 877 container_of(file->private_data, struct ge2d_ctx, fh); 878 struct meson_ge2d *ge2d = ctx->ge2d; 879 880 mutex_lock(&ge2d->mutex); 881 882 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); 883 884 v4l2_ctrl_handler_free(&ctx->ctrl_handler); 885 v4l2_fh_del(&ctx->fh); 886 v4l2_fh_exit(&ctx->fh); 887 kfree(ctx); 888 889 mutex_unlock(&ge2d->mutex); 890 891 return 0; 892} 893 894static const struct v4l2_file_operations ge2d_fops = { 895 .owner = THIS_MODULE, 896 .open = ge2d_open, 897 .release = ge2d_release, 898 .poll = v4l2_m2m_fop_poll, 899 .unlocked_ioctl = video_ioctl2, 900 .mmap = v4l2_m2m_fop_mmap, 901}; 902 903static const struct video_device ge2d_videodev = { 904 .name = "meson-ge2d", 905 .fops = &ge2d_fops, 906 .ioctl_ops = &ge2d_ioctl_ops, 907 .minor = -1, 908 .release = video_device_release, 909 .vfl_dir = VFL_DIR_M2M, 910 .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING, 911}; 912 913static const struct regmap_config meson_ge2d_regmap_conf = { 914 .reg_bits = 8, 915 .val_bits = 32, 916 .reg_stride = 4, 917 .max_register = GE2D_SRC2_STRIDE_CTRL, 918}; 919 920static int ge2d_probe(struct platform_device *pdev) 921{ 922 struct reset_control *rst; 923 struct video_device *vfd; 924 struct meson_ge2d *ge2d; 925 void __iomem *regs; 926 int ret = 0; 927 int irq; 928 929 if (!pdev->dev.of_node) 930 return -ENODEV; 931 932 ge2d = devm_kzalloc(&pdev->dev, sizeof(*ge2d), GFP_KERNEL); 933 if (!ge2d) 934 return -ENOMEM; 935 936 ge2d->dev = &pdev->dev; 937 mutex_init(&ge2d->mutex); 938 939 regs = devm_platform_ioremap_resource(pdev, 0); 940 if (IS_ERR(regs)) 941 return PTR_ERR(regs); 942 943 ge2d->map = devm_regmap_init_mmio(ge2d->dev, regs, 944 &meson_ge2d_regmap_conf); 945 if (IS_ERR(ge2d->map)) 946 return PTR_ERR(ge2d->map); 947 948 irq = platform_get_irq(pdev, 0); 949 ret = devm_request_irq(ge2d->dev, irq, ge2d_isr, 0, 950 dev_name(ge2d->dev), ge2d); 951 if (ret < 0) { 952 dev_err(ge2d->dev, "failed to request irq\n"); 953 return ret; 954 } 955 956 rst = devm_reset_control_get(ge2d->dev, NULL); 957 if (IS_ERR(rst)) { 958 dev_err(ge2d->dev, "failed to get core reset controller\n"); 959 return PTR_ERR(rst); 960 } 961 962 ge2d->clk = devm_clk_get(ge2d->dev, NULL); 963 if (IS_ERR(ge2d->clk)) { 964 dev_err(ge2d->dev, "failed to get clock\n"); 965 return PTR_ERR(ge2d->clk); 966 } 967 968 reset_control_assert(rst); 969 udelay(1); 970 reset_control_deassert(rst); 971 972 ret = clk_prepare_enable(ge2d->clk); 973 if (ret) { 974 dev_err(ge2d->dev, "Cannot enable ge2d sclk: %d\n", ret); 975 return ret; 976 } 977 978 ret = v4l2_device_register(&pdev->dev, &ge2d->v4l2_dev); 979 if (ret) 980 goto disable_clks; 981 982 vfd = video_device_alloc(); 983 if (!vfd) { 984 v4l2_err(&ge2d->v4l2_dev, "Failed to allocate video device\n"); 985 ret = -ENOMEM; 986 goto unreg_v4l2_dev; 987 } 988 989 *vfd = ge2d_videodev; 990 vfd->lock = &ge2d->mutex; 991 vfd->v4l2_dev = &ge2d->v4l2_dev; 992 993 video_set_drvdata(vfd, ge2d); 994 ge2d->vfd = vfd; 995 996 platform_set_drvdata(pdev, ge2d); 997 ge2d->m2m_dev = v4l2_m2m_init(&ge2d_m2m_ops); 998 if (IS_ERR(ge2d->m2m_dev)) { 999 v4l2_err(&ge2d->v4l2_dev, "Failed to init mem2mem device\n"); 1000 ret = PTR_ERR(ge2d->m2m_dev); 1001 goto rel_vdev; 1002 } 1003 1004 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1); 1005 if (ret) { 1006 v4l2_err(&ge2d->v4l2_dev, "Failed to register video device\n"); 1007 goto rel_m2m; 1008 } 1009 1010 v4l2_info(&ge2d->v4l2_dev, "Registered %s as /dev/%s\n", 1011 vfd->name, video_device_node_name(vfd)); 1012 1013 return 0; 1014 1015rel_m2m: 1016 v4l2_m2m_release(ge2d->m2m_dev); 1017rel_vdev: 1018 video_device_release(ge2d->vfd); 1019unreg_v4l2_dev: 1020 v4l2_device_unregister(&ge2d->v4l2_dev); 1021disable_clks: 1022 clk_disable_unprepare(ge2d->clk); 1023 1024 return ret; 1025} 1026 1027static void ge2d_remove(struct platform_device *pdev) 1028{ 1029 struct meson_ge2d *ge2d = platform_get_drvdata(pdev); 1030 1031 video_unregister_device(ge2d->vfd); 1032 v4l2_m2m_release(ge2d->m2m_dev); 1033 v4l2_device_unregister(&ge2d->v4l2_dev); 1034 clk_disable_unprepare(ge2d->clk); 1035} 1036 1037static const struct of_device_id meson_ge2d_match[] = { 1038 { 1039 .compatible = "amlogic,axg-ge2d", 1040 }, 1041 {}, 1042}; 1043 1044MODULE_DEVICE_TABLE(of, meson_ge2d_match); 1045 1046static struct platform_driver ge2d_drv = { 1047 .probe = ge2d_probe, 1048 .remove_new = ge2d_remove, 1049 .driver = { 1050 .name = "meson-ge2d", 1051 .of_match_table = meson_ge2d_match, 1052 }, 1053}; 1054 1055module_platform_driver(ge2d_drv); 1056 1057MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); 1058MODULE_DESCRIPTION("Amlogic 2D Graphic Acceleration Unit"); 1059MODULE_LICENSE("GPL"); 1060