1060 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (C) 2020 BayLibre, SAS4 * 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 12833#define DEFAULT_HEIGHT 12834#define DEFAULT_STRIDE 51235 36#define MAX_WIDTH 819137#define MAX_HEIGHT 819138 39/*40 * Missing features:41 * - Scaling42 * - Simple 1/2 vertical scaling43 * - YUV input support44 * - Source global alpha45 * - Colorspace conversion46 */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 format148 * is not supported. Drivers should always return a valid format,149 * preferably a format that is as widely supported by applications as150 * 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 else261 /* 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 else367 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 else381 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 int399queue_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 int432vidioc_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, return522 * error for output buffer type523 */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, return530 * error for capture buffer type531 */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 to537 * try/set538 */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 capabilities602 * 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 capabilities677 * 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 frames780 * parameters, take them in account781 */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