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
file_to_ge2d_ctx(struct file * filp)85 static inline struct ge2d_ctx *file_to_ge2d_ctx(struct file *filp)
86 {
87 return container_of(file_to_v4l2_fh(filp), struct ge2d_ctx, fh);
88 }
89
90 struct meson_ge2d {
91 struct v4l2_device v4l2_dev;
92 struct v4l2_m2m_dev *m2m_dev;
93 struct video_device *vfd;
94
95 struct device *dev;
96 struct regmap *map;
97 struct clk *clk;
98
99 /* vb2 queue lock */
100 struct mutex mutex;
101
102 struct ge2d_ctx *curr;
103 };
104
105 #define FMT(_fourcc, _alpha, _depth, _map) \
106 { \
107 .fourcc = _fourcc, \
108 .alpha = (_alpha), \
109 .depth = (_depth), \
110 .hw_fmt = GE2D_FORMAT_ ## _depth ## BIT, \
111 .hw_map = GE2D_COLOR_MAP_ ## _map, \
112 }
113
114 /* TOFIX Handle the YUV input formats */
115 static const struct ge2d_fmt formats[] = {
116 /* FOURCC Alpha HW FMT HW MAP */
117 FMT(V4L2_PIX_FMT_XRGB32, false, 32, BGRA8888),
118 FMT(V4L2_PIX_FMT_RGB32, true, 32, BGRA8888),
119 FMT(V4L2_PIX_FMT_ARGB32, true, 32, BGRA8888),
120 FMT(V4L2_PIX_FMT_RGBX32, false, 32, ABGR8888),
121 FMT(V4L2_PIX_FMT_RGBA32, true, 32, ABGR8888),
122 FMT(V4L2_PIX_FMT_BGRX32, false, 32, RGBA8888),
123 FMT(V4L2_PIX_FMT_BGRA32, true, 32, RGBA8888),
124 FMT(V4L2_PIX_FMT_BGR32, true, 32, ARGB8888),
125 FMT(V4L2_PIX_FMT_ABGR32, true, 32, ARGB8888),
126 FMT(V4L2_PIX_FMT_XBGR32, false, 32, ARGB8888),
127
128 FMT(V4L2_PIX_FMT_RGB24, false, 24, BGR888),
129 FMT(V4L2_PIX_FMT_BGR24, false, 24, RGB888),
130
131 FMT(V4L2_PIX_FMT_XRGB555X, false, 16, ARGB1555),
132 FMT(V4L2_PIX_FMT_ARGB555X, true, 16, ARGB1555),
133 FMT(V4L2_PIX_FMT_RGB565, false, 16, RGB565),
134 FMT(V4L2_PIX_FMT_RGBX444, false, 16, RGBA4444),
135 FMT(V4L2_PIX_FMT_RGBA444, true, 16, RGBA4444),
136 FMT(V4L2_PIX_FMT_XRGB444, false, 16, ARGB4444),
137 FMT(V4L2_PIX_FMT_ARGB444, true, 16, ARGB4444),
138 };
139
140 #define NUM_FORMATS ARRAY_SIZE(formats)
141
find_fmt(struct v4l2_format * f)142 static const struct ge2d_fmt *find_fmt(struct v4l2_format *f)
143 {
144 unsigned int i;
145
146 for (i = 0; i < NUM_FORMATS; i++) {
147 if (formats[i].fourcc == f->fmt.pix.pixelformat)
148 return &formats[i];
149 }
150
151 /*
152 * TRY_FMT/S_FMT should never return an error when the requested format
153 * is not supported. Drivers should always return a valid format,
154 * preferably a format that is as widely supported by applications as
155 * possible.
156 */
157 return &formats[0];
158 }
159
get_frame(struct ge2d_ctx * ctx,enum v4l2_buf_type type)160 static struct ge2d_frame *get_frame(struct ge2d_ctx *ctx,
161 enum v4l2_buf_type type)
162 {
163 switch (type) {
164 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
165 return &ctx->in;
166 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
167 return &ctx->out;
168 default:
169 /* This should never happen, warn and return OUTPUT frame */
170 dev_warn(ctx->ge2d->dev, "%s: invalid buffer type\n", __func__);
171 return &ctx->in;
172 }
173 }
174
ge2d_hw_start(struct meson_ge2d * ge2d)175 static void ge2d_hw_start(struct meson_ge2d *ge2d)
176 {
177 struct ge2d_ctx *ctx = ge2d->curr;
178 u32 reg;
179
180 /* Reset */
181 regmap_update_bits(ge2d->map, GE2D_GEN_CTRL1,
182 GE2D_SOFT_RST, GE2D_SOFT_RST);
183 regmap_update_bits(ge2d->map, GE2D_GEN_CTRL1,
184 GE2D_SOFT_RST, 0);
185
186 usleep_range(100, 200);
187
188 /* Implement CANVAS for non-AXG */
189 regmap_write(ge2d->map, GE2D_SRC1_BADDR_CTRL,
190 (vb2_dma_contig_plane_dma_addr(&ctx->in.buf->vb2_buf, 0) + 7) >> 3);
191 regmap_write(ge2d->map, GE2D_SRC1_STRIDE_CTRL,
192 (ctx->in.pix_fmt.bytesperline + 7) >> 3);
193 regmap_write(ge2d->map, GE2D_SRC2_BADDR_CTRL,
194 (vb2_dma_contig_plane_dma_addr(&ctx->out.buf->vb2_buf, 0) + 7) >> 3);
195 regmap_write(ge2d->map, GE2D_SRC2_STRIDE_CTRL,
196 (ctx->out.pix_fmt.bytesperline + 7) >> 3);
197 regmap_write(ge2d->map, GE2D_DST1_BADDR_CTRL,
198 (vb2_dma_contig_plane_dma_addr(&ctx->out.buf->vb2_buf, 0) + 7) >> 3);
199 regmap_write(ge2d->map, GE2D_DST1_STRIDE_CTRL,
200 (ctx->out.pix_fmt.bytesperline + 7) >> 3);
201
202 regmap_write(ge2d->map, GE2D_GEN_CTRL0, 0);
203 regmap_write(ge2d->map, GE2D_GEN_CTRL1,
204 FIELD_PREP(GE2D_INTERRUPT_CTRL, 2) |
205 FIELD_PREP(GE2D_SRC2_BURST_SIZE_CTRL, 3) |
206 FIELD_PREP(GE2D_SRC1_BURST_SIZE_CTRL, 0x3f));
207
208 regmap_write(ge2d->map, GE2D_GEN_CTRL2,
209 GE2D_SRC1_LITTLE_ENDIAN |
210 GE2D_SRC2_LITTLE_ENDIAN |
211 GE2D_DST_LITTLE_ENDIAN |
212 FIELD_PREP(GE2D_DST1_COLOR_MAP, ctx->out.fmt->hw_map) |
213 FIELD_PREP(GE2D_DST1_FORMAT, ctx->out.fmt->hw_fmt) |
214 FIELD_PREP(GE2D_SRC2_COLOR_MAP, ctx->out.fmt->hw_map) |
215 FIELD_PREP(GE2D_SRC2_FORMAT, ctx->out.fmt->hw_fmt) |
216 FIELD_PREP(GE2D_SRC1_COLOR_MAP, ctx->in.fmt->hw_map) |
217 FIELD_PREP(GE2D_SRC1_FORMAT, ctx->in.fmt->hw_fmt));
218 regmap_write(ge2d->map, GE2D_GEN_CTRL3,
219 GE2D_DST1_ENABLE);
220
221 regmap_write(ge2d->map, GE2D_SRC1_CLIPY_START_END,
222 FIELD_PREP(GE2D_START, ctx->in.crop.top) |
223 FIELD_PREP(GE2D_END, ctx->in.crop.top + ctx->in.crop.height - 1));
224 regmap_write(ge2d->map, GE2D_SRC1_CLIPX_START_END,
225 FIELD_PREP(GE2D_START, ctx->in.crop.left) |
226 FIELD_PREP(GE2D_END, ctx->in.crop.left + ctx->in.crop.width - 1));
227 regmap_write(ge2d->map, GE2D_SRC2_CLIPY_START_END,
228 FIELD_PREP(GE2D_START, ctx->out.crop.top) |
229 FIELD_PREP(GE2D_END, ctx->out.crop.top + ctx->out.crop.height - 1));
230 regmap_write(ge2d->map, GE2D_SRC2_CLIPX_START_END,
231 FIELD_PREP(GE2D_START, ctx->out.crop.left) |
232 FIELD_PREP(GE2D_END, ctx->out.crop.left + ctx->out.crop.width - 1));
233 regmap_write(ge2d->map, GE2D_DST_CLIPY_START_END,
234 FIELD_PREP(GE2D_START, ctx->out.crop.top) |
235 FIELD_PREP(GE2D_END, ctx->out.crop.top + ctx->out.crop.height - 1));
236 regmap_write(ge2d->map, GE2D_DST_CLIPX_START_END,
237 FIELD_PREP(GE2D_START, ctx->out.crop.left) |
238 FIELD_PREP(GE2D_END, ctx->out.crop.left + ctx->out.crop.width - 1));
239
240 regmap_write(ge2d->map, GE2D_SRC1_Y_START_END,
241 FIELD_PREP(GE2D_END, ctx->in.pix_fmt.height - 1));
242 regmap_write(ge2d->map, GE2D_SRC1_X_START_END,
243 FIELD_PREP(GE2D_END, ctx->in.pix_fmt.width - 1));
244 regmap_write(ge2d->map, GE2D_SRC2_Y_START_END,
245 FIELD_PREP(GE2D_END, ctx->out.pix_fmt.height - 1));
246 regmap_write(ge2d->map, GE2D_SRC2_X_START_END,
247 FIELD_PREP(GE2D_END, ctx->out.pix_fmt.width - 1));
248 regmap_write(ge2d->map, GE2D_DST_Y_START_END,
249 FIELD_PREP(GE2D_END, ctx->out.pix_fmt.height - 1));
250 regmap_write(ge2d->map, GE2D_DST_X_START_END,
251 FIELD_PREP(GE2D_END, ctx->out.pix_fmt.width - 1));
252
253 /* Color, no blend, use source color */
254 reg = GE2D_ALU_DO_COLOR_OPERATION_LOGIC(LOGIC_OPERATION_COPY,
255 COLOR_FACTOR_SRC_COLOR);
256
257 if (ctx->in.fmt->alpha && ctx->out.fmt->alpha)
258 /* Take source alpha */
259 reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_COPY,
260 COLOR_FACTOR_SRC_ALPHA);
261 else if (!ctx->out.fmt->alpha)
262 /* Set alpha to 0 */
263 reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_SET,
264 COLOR_FACTOR_ZERO);
265 else
266 /* Keep original alpha */
267 reg |= GE2D_ALU_DO_ALPHA_OPERATION_LOGIC(LOGIC_OPERATION_COPY,
268 COLOR_FACTOR_DST_ALPHA);
269
270 regmap_write(ge2d->map, GE2D_ALU_OP_CTRL, reg);
271
272 /* Start */
273 regmap_write(ge2d->map, GE2D_CMD_CTRL,
274 (ctx->xy_swap ? GE2D_DST_XY_SWAP : 0) |
275 (ctx->hflip ? GE2D_SRC1_Y_REV : 0) |
276 (ctx->vflip ? GE2D_SRC1_X_REV : 0) |
277 GE2D_CBUS_CMD_WR);
278 }
279
device_run(void * priv)280 static void device_run(void *priv)
281 {
282 struct ge2d_ctx *ctx = priv;
283 struct meson_ge2d *ge2d = ctx->ge2d;
284
285 ge2d->curr = ctx;
286
287 ctx->in.buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
288 ctx->out.buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
289
290 ge2d_hw_start(ge2d);
291 }
292
ge2d_isr(int irq,void * priv)293 static irqreturn_t ge2d_isr(int irq, void *priv)
294 {
295 struct meson_ge2d *ge2d = priv;
296 u32 intr;
297
298 regmap_read(ge2d->map, GE2D_STATUS0, &intr);
299
300 if (!(intr & GE2D_GE2D_BUSY)) {
301 struct vb2_v4l2_buffer *src, *dst;
302 struct ge2d_ctx *ctx = ge2d->curr;
303
304 ge2d->curr = NULL;
305
306 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
307 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
308
309 src->sequence = ctx->sequence_out++;
310 dst->sequence = ctx->sequence_cap++;
311
312 dst->timecode = src->timecode;
313 dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
314 dst->flags = src->flags;
315
316 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
317 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
318 v4l2_m2m_job_finish(ge2d->m2m_dev, ctx->fh.m2m_ctx);
319 }
320
321 return IRQ_HANDLED;
322 }
323
324 static const struct v4l2_m2m_ops ge2d_m2m_ops = {
325 .device_run = device_run,
326 };
327
ge2d_queue_setup(struct vb2_queue * vq,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],struct device * alloc_devs[])328 static int ge2d_queue_setup(struct vb2_queue *vq,
329 unsigned int *nbuffers, unsigned int *nplanes,
330 unsigned int sizes[], struct device *alloc_devs[])
331 {
332 struct ge2d_ctx *ctx = vb2_get_drv_priv(vq);
333 struct ge2d_frame *f = get_frame(ctx, vq->type);
334
335 if (*nplanes)
336 return sizes[0] < f->pix_fmt.sizeimage ? -EINVAL : 0;
337
338 sizes[0] = f->pix_fmt.sizeimage;
339 *nplanes = 1;
340
341 return 0;
342 }
343
ge2d_buf_prepare(struct vb2_buffer * vb)344 static int ge2d_buf_prepare(struct vb2_buffer *vb)
345 {
346 struct ge2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
347 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
348 struct ge2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
349
350 vbuf->field = V4L2_FIELD_NONE;
351
352 vb2_set_plane_payload(vb, 0, f->pix_fmt.sizeimage);
353
354 return 0;
355 }
356
ge2d_buf_queue(struct vb2_buffer * vb)357 static void ge2d_buf_queue(struct vb2_buffer *vb)
358 {
359 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
360 struct ge2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
361
362 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
363 }
364
ge2d_start_streaming(struct vb2_queue * vq,unsigned int count)365 static int ge2d_start_streaming(struct vb2_queue *vq, unsigned int count)
366 {
367 struct ge2d_ctx *ctx = vb2_get_drv_priv(vq);
368
369 if (V4L2_TYPE_IS_OUTPUT(vq->type))
370 ctx->sequence_out = 0;
371 else
372 ctx->sequence_cap = 0;
373
374 return 0;
375 }
376
ge2d_stop_streaming(struct vb2_queue * vq)377 static void ge2d_stop_streaming(struct vb2_queue *vq)
378 {
379 struct ge2d_ctx *ctx = vb2_get_drv_priv(vq);
380 struct vb2_v4l2_buffer *vbuf;
381
382 for (;;) {
383 if (V4L2_TYPE_IS_OUTPUT(vq->type))
384 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
385 else
386 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
387 if (!vbuf)
388 break;
389 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
390 }
391 }
392
393 static const struct vb2_ops ge2d_qops = {
394 .queue_setup = ge2d_queue_setup,
395 .buf_prepare = ge2d_buf_prepare,
396 .buf_queue = ge2d_buf_queue,
397 .start_streaming = ge2d_start_streaming,
398 .stop_streaming = ge2d_stop_streaming,
399 };
400
401 static int
queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)402 queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
403 {
404 struct ge2d_ctx *ctx = priv;
405 int ret;
406
407 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
408 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
409 src_vq->drv_priv = ctx;
410 src_vq->ops = &ge2d_qops;
411 src_vq->mem_ops = &vb2_dma_contig_memops;
412 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
413 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
414 src_vq->lock = &ctx->ge2d->mutex;
415 src_vq->dev = ctx->ge2d->v4l2_dev.dev;
416
417 ret = vb2_queue_init(src_vq);
418 if (ret)
419 return ret;
420
421 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
422 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
423 dst_vq->drv_priv = ctx;
424 dst_vq->ops = &ge2d_qops;
425 dst_vq->mem_ops = &vb2_dma_contig_memops;
426 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
427 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
428 dst_vq->lock = &ctx->ge2d->mutex;
429 dst_vq->dev = ctx->ge2d->v4l2_dev.dev;
430
431 return vb2_queue_init(dst_vq);
432 }
433
434 static int
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)435 vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap)
436 {
437 strscpy(cap->driver, GE2D_NAME, sizeof(cap->driver));
438 strscpy(cap->card, GE2D_NAME, sizeof(cap->card));
439 strscpy(cap->bus_info, "platform:" GE2D_NAME, sizeof(cap->bus_info));
440
441 return 0;
442 }
443
vidioc_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)444 static int vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f)
445 {
446 const struct ge2d_fmt *fmt;
447
448 if (f->index >= NUM_FORMATS)
449 return -EINVAL;
450
451 fmt = &formats[f->index];
452 f->pixelformat = fmt->fourcc;
453
454 return 0;
455 }
456
vidioc_g_selection(struct file * file,void * priv,struct v4l2_selection * s)457 static int vidioc_g_selection(struct file *file, void *priv,
458 struct v4l2_selection *s)
459 {
460 struct ge2d_ctx *ctx = file_to_ge2d_ctx(file);
461 struct ge2d_frame *f;
462 bool use_frame = false;
463
464 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
465 s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
466 return -EINVAL;
467
468 f = get_frame(ctx, s->type);
469
470 switch (s->target) {
471 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
472 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
473 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
474 return -EINVAL;
475 break;
476 case V4L2_SEL_TGT_CROP_DEFAULT:
477 case V4L2_SEL_TGT_CROP_BOUNDS:
478 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
479 return -EINVAL;
480 break;
481 case V4L2_SEL_TGT_COMPOSE:
482 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
483 return -EINVAL;
484 use_frame = true;
485 break;
486 case V4L2_SEL_TGT_CROP:
487 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
488 return -EINVAL;
489 use_frame = true;
490 break;
491 default:
492 return -EINVAL;
493 }
494
495 if (use_frame) {
496 s->r = f->crop;
497 } else {
498 s->r.left = 0;
499 s->r.top = 0;
500 s->r.width = f->pix_fmt.width;
501 s->r.height = f->pix_fmt.height;
502 }
503
504 return 0;
505 }
506
vidioc_s_selection(struct file * file,void * priv,struct v4l2_selection * s)507 static int vidioc_s_selection(struct file *file, void *priv,
508 struct v4l2_selection *s)
509 {
510 struct ge2d_ctx *ctx = file_to_ge2d_ctx(file);
511 struct meson_ge2d *ge2d = ctx->ge2d;
512 struct ge2d_frame *f;
513 int ret = 0;
514
515 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
516 s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
517 return -EINVAL;
518
519 f = get_frame(ctx, s->type);
520
521 switch (s->target) {
522 case V4L2_SEL_TGT_COMPOSE:
523 /*
524 * COMPOSE target is only valid for capture buffer type, return
525 * error for output buffer type
526 */
527 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
528 return -EINVAL;
529 break;
530 case V4L2_SEL_TGT_CROP:
531 /*
532 * CROP target is only valid for output buffer type, return
533 * error for capture buffer type
534 */
535 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
536 return -EINVAL;
537 break;
538 /*
539 * bound and default crop/compose targets are invalid targets to
540 * try/set
541 */
542 default:
543 return -EINVAL;
544 }
545
546 if (s->r.top < 0 || s->r.left < 0) {
547 v4l2_err(&ge2d->v4l2_dev,
548 "doesn't support negative values for top & left.\n");
549 return -EINVAL;
550 }
551
552 if (s->r.left + s->r.width > f->pix_fmt.width ||
553 s->r.top + s->r.height > f->pix_fmt.height) {
554 v4l2_err(&ge2d->v4l2_dev, "unsupported rectangle value.\n");
555 return -EINVAL;
556 }
557
558 f->crop = s->r;
559
560 return ret;
561 }
562
vidioc_setup_cap_fmt(struct ge2d_ctx * ctx,struct v4l2_pix_format * f)563 static void vidioc_setup_cap_fmt(struct ge2d_ctx *ctx, struct v4l2_pix_format *f)
564 {
565 struct ge2d_frame *frm_out = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
566
567 *f = frm_out->pix_fmt;
568
569 if (ctx->xy_swap) {
570 f->width = frm_out->pix_fmt.height;
571 f->height = frm_out->pix_fmt.width;
572 }
573 }
574
vidioc_try_fmt_cap(struct file * file,void * priv,struct v4l2_format * f)575 static int vidioc_try_fmt_cap(struct file *file, void *priv, struct v4l2_format *f)
576 {
577 struct ge2d_ctx *ctx = file_to_ge2d_ctx(file);
578 const struct ge2d_fmt *fmt = find_fmt(f);
579 struct v4l2_pix_format fmt_cap;
580
581 vidioc_setup_cap_fmt(ctx, &fmt_cap);
582
583 fmt_cap.pixelformat = fmt->fourcc;
584
585 fmt_cap.bytesperline = max(f->fmt.pix.bytesperline,
586 ALIGN((fmt_cap.width * fmt->depth) >> 3, 8));
587
588 fmt_cap.sizeimage = max(f->fmt.pix.sizeimage,
589 fmt_cap.height * fmt_cap.bytesperline);
590
591 f->fmt.pix = fmt_cap;
592
593 return 0;
594 }
595
vidioc_s_fmt_cap(struct file * file,void * priv,struct v4l2_format * f)596 static int vidioc_s_fmt_cap(struct file *file, void *priv, struct v4l2_format *f)
597 {
598 struct ge2d_ctx *ctx = file_to_ge2d_ctx(file);
599 struct meson_ge2d *ge2d = ctx->ge2d;
600 struct vb2_queue *vq;
601 struct ge2d_frame *frm;
602 int ret = 0;
603
604 /* Adjust all values accordingly to the hardware capabilities
605 * and chosen format.
606 */
607 ret = vidioc_try_fmt_cap(file, priv, f);
608 if (ret)
609 return ret;
610
611 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
612 if (vb2_is_busy(vq)) {
613 v4l2_err(&ge2d->v4l2_dev, "queue (%d) bust\n", f->type);
614 return -EBUSY;
615 }
616
617 frm = get_frame(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
618
619 frm->pix_fmt = f->fmt.pix;
620 frm->fmt = find_fmt(f);
621 f->fmt.pix.pixelformat = frm->fmt->fourcc;
622
623 /* Reset crop settings */
624 frm->crop.left = 0;
625 frm->crop.top = 0;
626 frm->crop.width = frm->pix_fmt.width;
627 frm->crop.height = frm->pix_fmt.height;
628
629 return 0;
630 }
631
vidioc_g_fmt(struct file * file,void * priv,struct v4l2_format * f)632 static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
633 {
634 struct ge2d_ctx *ctx = file_to_ge2d_ctx(file);
635 struct ge2d_frame *frm;
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
vidioc_try_fmt_out(struct file * file,void * priv,struct v4l2_format * f)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
vidioc_s_fmt_out(struct file * file,void * priv,struct v4l2_format * f)666 static int vidioc_s_fmt_out(struct file *file, void *priv, struct v4l2_format *f)
667 {
668 struct ge2d_ctx *ctx = file_to_ge2d_ctx(file);
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
ge2d_s_ctrl(struct v4l2_ctrl * ctrl)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
ge2d_setup_ctrls(struct ge2d_ctx * ctx)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
ge2d_open(struct file * file)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_obj(*ctx);
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 v4l2_fh_add(&ctx->fh, file);
859
860 ge2d_setup_ctrls(ctx);
861
862 /* Write the default values to the ctx struct */
863 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
864
865 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
866 mutex_unlock(&ge2d->mutex);
867
868 return 0;
869 }
870
ge2d_release(struct file * file)871 static int ge2d_release(struct file *file)
872 {
873 struct ge2d_ctx *ctx = file_to_ge2d_ctx(file);
874 struct meson_ge2d *ge2d = ctx->ge2d;
875
876 mutex_lock(&ge2d->mutex);
877
878 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
879
880 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
881 v4l2_fh_del(&ctx->fh, file);
882 v4l2_fh_exit(&ctx->fh);
883 kfree(ctx);
884
885 mutex_unlock(&ge2d->mutex);
886
887 return 0;
888 }
889
890 static const struct v4l2_file_operations ge2d_fops = {
891 .owner = THIS_MODULE,
892 .open = ge2d_open,
893 .release = ge2d_release,
894 .poll = v4l2_m2m_fop_poll,
895 .unlocked_ioctl = video_ioctl2,
896 .mmap = v4l2_m2m_fop_mmap,
897 };
898
899 static const struct video_device ge2d_videodev = {
900 .name = "meson-ge2d",
901 .fops = &ge2d_fops,
902 .ioctl_ops = &ge2d_ioctl_ops,
903 .minor = -1,
904 .release = video_device_release,
905 .vfl_dir = VFL_DIR_M2M,
906 .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
907 };
908
909 static const struct regmap_config meson_ge2d_regmap_conf = {
910 .reg_bits = 8,
911 .val_bits = 32,
912 .reg_stride = 4,
913 .max_register = GE2D_SRC2_STRIDE_CTRL,
914 };
915
ge2d_probe(struct platform_device * pdev)916 static int ge2d_probe(struct platform_device *pdev)
917 {
918 struct reset_control *rst;
919 struct video_device *vfd;
920 struct meson_ge2d *ge2d;
921 void __iomem *regs;
922 int ret = 0;
923 int irq;
924
925 if (!pdev->dev.of_node)
926 return -ENODEV;
927
928 ge2d = devm_kzalloc(&pdev->dev, sizeof(*ge2d), GFP_KERNEL);
929 if (!ge2d)
930 return -ENOMEM;
931
932 ge2d->dev = &pdev->dev;
933 mutex_init(&ge2d->mutex);
934
935 regs = devm_platform_ioremap_resource(pdev, 0);
936 if (IS_ERR(regs))
937 return PTR_ERR(regs);
938
939 ge2d->map = devm_regmap_init_mmio(ge2d->dev, regs,
940 &meson_ge2d_regmap_conf);
941 if (IS_ERR(ge2d->map))
942 return PTR_ERR(ge2d->map);
943
944 irq = platform_get_irq(pdev, 0);
945 ret = devm_request_irq(ge2d->dev, irq, ge2d_isr, 0,
946 dev_name(ge2d->dev), ge2d);
947 if (ret < 0) {
948 dev_err(ge2d->dev, "failed to request irq\n");
949 return ret;
950 }
951
952 rst = devm_reset_control_get(ge2d->dev, NULL);
953 if (IS_ERR(rst)) {
954 dev_err(ge2d->dev, "failed to get core reset controller\n");
955 return PTR_ERR(rst);
956 }
957
958 ge2d->clk = devm_clk_get(ge2d->dev, NULL);
959 if (IS_ERR(ge2d->clk)) {
960 dev_err(ge2d->dev, "failed to get clock\n");
961 return PTR_ERR(ge2d->clk);
962 }
963
964 reset_control_assert(rst);
965 udelay(1);
966 reset_control_deassert(rst);
967
968 ret = clk_prepare_enable(ge2d->clk);
969 if (ret) {
970 dev_err(ge2d->dev, "Cannot enable ge2d sclk: %d\n", ret);
971 return ret;
972 }
973
974 ret = v4l2_device_register(&pdev->dev, &ge2d->v4l2_dev);
975 if (ret)
976 goto disable_clks;
977
978 vfd = video_device_alloc();
979 if (!vfd) {
980 v4l2_err(&ge2d->v4l2_dev, "Failed to allocate video device\n");
981 ret = -ENOMEM;
982 goto unreg_v4l2_dev;
983 }
984
985 *vfd = ge2d_videodev;
986 vfd->lock = &ge2d->mutex;
987 vfd->v4l2_dev = &ge2d->v4l2_dev;
988
989 video_set_drvdata(vfd, ge2d);
990 ge2d->vfd = vfd;
991
992 platform_set_drvdata(pdev, ge2d);
993 ge2d->m2m_dev = v4l2_m2m_init(&ge2d_m2m_ops);
994 if (IS_ERR(ge2d->m2m_dev)) {
995 v4l2_err(&ge2d->v4l2_dev, "Failed to init mem2mem device\n");
996 ret = PTR_ERR(ge2d->m2m_dev);
997 goto rel_vdev;
998 }
999
1000 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1001 if (ret) {
1002 v4l2_err(&ge2d->v4l2_dev, "Failed to register video device\n");
1003 goto rel_m2m;
1004 }
1005
1006 v4l2_info(&ge2d->v4l2_dev, "Registered %s as /dev/%s\n",
1007 vfd->name, video_device_node_name(vfd));
1008
1009 return 0;
1010
1011 rel_m2m:
1012 v4l2_m2m_release(ge2d->m2m_dev);
1013 rel_vdev:
1014 video_device_release(ge2d->vfd);
1015 unreg_v4l2_dev:
1016 v4l2_device_unregister(&ge2d->v4l2_dev);
1017 disable_clks:
1018 clk_disable_unprepare(ge2d->clk);
1019
1020 return ret;
1021 }
1022
ge2d_remove(struct platform_device * pdev)1023 static void ge2d_remove(struct platform_device *pdev)
1024 {
1025 struct meson_ge2d *ge2d = platform_get_drvdata(pdev);
1026
1027 video_unregister_device(ge2d->vfd);
1028 v4l2_m2m_release(ge2d->m2m_dev);
1029 v4l2_device_unregister(&ge2d->v4l2_dev);
1030 clk_disable_unprepare(ge2d->clk);
1031 }
1032
1033 static const struct of_device_id meson_ge2d_match[] = {
1034 {
1035 .compatible = "amlogic,axg-ge2d",
1036 },
1037 {},
1038 };
1039
1040 MODULE_DEVICE_TABLE(of, meson_ge2d_match);
1041
1042 static struct platform_driver ge2d_drv = {
1043 .probe = ge2d_probe,
1044 .remove = ge2d_remove,
1045 .driver = {
1046 .name = "meson-ge2d",
1047 .of_match_table = meson_ge2d_match,
1048 },
1049 };
1050
1051 module_platform_driver(ge2d_drv);
1052
1053 MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
1054 MODULE_DESCRIPTION("Amlogic 2D Graphic Acceleration Unit");
1055 MODULE_LICENSE("GPL");
1056