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[mirror_ubuntu-artful-kernel.git] / drivers / media / platform / xilinx / xilinx-tpg.c
1 /*
2 * Xilinx Test Pattern Generator
3 *
4 * Copyright (C) 2013-2015 Ideas on Board
5 * Copyright (C) 2013-2015 Xilinx, Inc.
6 *
7 * Contacts: Hyun Kwon <hyun.kwon@xilinx.com>
8 * Laurent Pinchart <laurent.pinchart@ideasonboard.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/device.h>
16 #include <linux/gpio/consumer.h>
17 #include <linux/module.h>
18 #include <linux/of.h>
19 #include <linux/platform_device.h>
20 #include <linux/xilinx-v4l2-controls.h>
21
22 #include <media/v4l2-async.h>
23 #include <media/v4l2-ctrls.h>
24 #include <media/v4l2-subdev.h>
25
26 #include "xilinx-vip.h"
27 #include "xilinx-vtc.h"
28
29 #define XTPG_CTRL_STATUS_SLAVE_ERROR (1 << 16)
30 #define XTPG_CTRL_IRQ_SLAVE_ERROR (1 << 16)
31
32 #define XTPG_PATTERN_CONTROL 0x0100
33 #define XTPG_PATTERN_MASK (0xf << 0)
34 #define XTPG_PATTERN_CONTROL_CROSS_HAIRS (1 << 4)
35 #define XTPG_PATTERN_CONTROL_MOVING_BOX (1 << 5)
36 #define XTPG_PATTERN_CONTROL_COLOR_MASK_SHIFT 6
37 #define XTPG_PATTERN_CONTROL_COLOR_MASK_MASK (0xf << 6)
38 #define XTPG_PATTERN_CONTROL_STUCK_PIXEL (1 << 9)
39 #define XTPG_PATTERN_CONTROL_NOISE (1 << 10)
40 #define XTPG_PATTERN_CONTROL_MOTION (1 << 12)
41 #define XTPG_MOTION_SPEED 0x0104
42 #define XTPG_CROSS_HAIRS 0x0108
43 #define XTPG_CROSS_HAIRS_ROW_SHIFT 0
44 #define XTPG_CROSS_HAIRS_ROW_MASK (0xfff << 0)
45 #define XTPG_CROSS_HAIRS_COLUMN_SHIFT 16
46 #define XTPG_CROSS_HAIRS_COLUMN_MASK (0xfff << 16)
47 #define XTPG_ZPLATE_HOR_CONTROL 0x010c
48 #define XTPG_ZPLATE_VER_CONTROL 0x0110
49 #define XTPG_ZPLATE_START_SHIFT 0
50 #define XTPG_ZPLATE_START_MASK (0xffff << 0)
51 #define XTPG_ZPLATE_SPEED_SHIFT 16
52 #define XTPG_ZPLATE_SPEED_MASK (0xffff << 16)
53 #define XTPG_BOX_SIZE 0x0114
54 #define XTPG_BOX_COLOR 0x0118
55 #define XTPG_STUCK_PIXEL_THRESH 0x011c
56 #define XTPG_NOISE_GAIN 0x0120
57 #define XTPG_BAYER_PHASE 0x0124
58 #define XTPG_BAYER_PHASE_RGGB 0
59 #define XTPG_BAYER_PHASE_GRBG 1
60 #define XTPG_BAYER_PHASE_GBRG 2
61 #define XTPG_BAYER_PHASE_BGGR 3
62 #define XTPG_BAYER_PHASE_OFF 4
63
64 /*
65 * The minimum blanking value is one clock cycle for the front porch, one clock
66 * cycle for the sync pulse and one clock cycle for the back porch.
67 */
68 #define XTPG_MIN_HBLANK 3
69 #define XTPG_MAX_HBLANK (XVTC_MAX_HSIZE - XVIP_MIN_WIDTH)
70 #define XTPG_MIN_VBLANK 3
71 #define XTPG_MAX_VBLANK (XVTC_MAX_VSIZE - XVIP_MIN_HEIGHT)
72
73 /**
74 * struct xtpg_device - Xilinx Test Pattern Generator device structure
75 * @xvip: Xilinx Video IP device
76 * @pads: media pads
77 * @npads: number of pads (1 or 2)
78 * @has_input: whether an input is connected to the sink pad
79 * @formats: active V4L2 media bus format for each pad
80 * @default_format: default V4L2 media bus format
81 * @vip_format: format information corresponding to the active format
82 * @bayer: boolean flag if TPG is set to any bayer format
83 * @ctrl_handler: control handler
84 * @hblank: horizontal blanking control
85 * @vblank: vertical blanking control
86 * @pattern: test pattern control
87 * @streaming: is the video stream active
88 * @vtc: video timing controller
89 * @vtmux_gpio: video timing mux GPIO
90 */
91 struct xtpg_device {
92 struct xvip_device xvip;
93
94 struct media_pad pads[2];
95 unsigned int npads;
96 bool has_input;
97
98 struct v4l2_mbus_framefmt formats[2];
99 struct v4l2_mbus_framefmt default_format;
100 const struct xvip_video_format *vip_format;
101 bool bayer;
102
103 struct v4l2_ctrl_handler ctrl_handler;
104 struct v4l2_ctrl *hblank;
105 struct v4l2_ctrl *vblank;
106 struct v4l2_ctrl *pattern;
107 bool streaming;
108
109 struct xvtc_device *vtc;
110 struct gpio_desc *vtmux_gpio;
111 };
112
113 static inline struct xtpg_device *to_tpg(struct v4l2_subdev *subdev)
114 {
115 return container_of(subdev, struct xtpg_device, xvip.subdev);
116 }
117
118 static u32 xtpg_get_bayer_phase(unsigned int code)
119 {
120 switch (code) {
121 case MEDIA_BUS_FMT_SRGGB8_1X8:
122 return XTPG_BAYER_PHASE_RGGB;
123 case MEDIA_BUS_FMT_SGRBG8_1X8:
124 return XTPG_BAYER_PHASE_GRBG;
125 case MEDIA_BUS_FMT_SGBRG8_1X8:
126 return XTPG_BAYER_PHASE_GBRG;
127 case MEDIA_BUS_FMT_SBGGR8_1X8:
128 return XTPG_BAYER_PHASE_BGGR;
129 default:
130 return XTPG_BAYER_PHASE_OFF;
131 }
132 }
133
134 static void __xtpg_update_pattern_control(struct xtpg_device *xtpg,
135 bool passthrough, bool pattern)
136 {
137 u32 pattern_mask = (1 << (xtpg->pattern->maximum + 1)) - 1;
138
139 /*
140 * If the TPG has no sink pad or no input connected to its sink pad
141 * passthrough mode can't be enabled.
142 */
143 if (xtpg->npads == 1 || !xtpg->has_input)
144 passthrough = false;
145
146 /* If passthrough mode is allowed unmask bit 0. */
147 if (passthrough)
148 pattern_mask &= ~1;
149
150 /* If test pattern mode is allowed unmask all other bits. */
151 if (pattern)
152 pattern_mask &= 1;
153
154 __v4l2_ctrl_modify_range(xtpg->pattern, 0, xtpg->pattern->maximum,
155 pattern_mask, pattern ? 9 : 0);
156 }
157
158 static void xtpg_update_pattern_control(struct xtpg_device *xtpg,
159 bool passthrough, bool pattern)
160 {
161 mutex_lock(xtpg->ctrl_handler.lock);
162 __xtpg_update_pattern_control(xtpg, passthrough, pattern);
163 mutex_unlock(xtpg->ctrl_handler.lock);
164 }
165
166 /* -----------------------------------------------------------------------------
167 * V4L2 Subdevice Video Operations
168 */
169
170 static int xtpg_s_stream(struct v4l2_subdev *subdev, int enable)
171 {
172 struct xtpg_device *xtpg = to_tpg(subdev);
173 unsigned int width = xtpg->formats[0].width;
174 unsigned int height = xtpg->formats[0].height;
175 bool passthrough;
176 u32 bayer_phase;
177
178 if (!enable) {
179 xvip_stop(&xtpg->xvip);
180 if (xtpg->vtc)
181 xvtc_generator_stop(xtpg->vtc);
182
183 xtpg_update_pattern_control(xtpg, true, true);
184 xtpg->streaming = false;
185 return 0;
186 }
187
188 xvip_set_frame_size(&xtpg->xvip, &xtpg->formats[0]);
189
190 if (xtpg->vtc) {
191 struct xvtc_config config = {
192 .hblank_start = width,
193 .hsync_start = width + 1,
194 .vblank_start = height,
195 .vsync_start = height + 1,
196 };
197 unsigned int htotal;
198 unsigned int vtotal;
199
200 htotal = min_t(unsigned int, XVTC_MAX_HSIZE,
201 v4l2_ctrl_g_ctrl(xtpg->hblank) + width);
202 vtotal = min_t(unsigned int, XVTC_MAX_VSIZE,
203 v4l2_ctrl_g_ctrl(xtpg->vblank) + height);
204
205 config.hsync_end = htotal - 1;
206 config.hsize = htotal;
207 config.vsync_end = vtotal - 1;
208 config.vsize = vtotal;
209
210 xvtc_generator_start(xtpg->vtc, &config);
211 }
212
213 /*
214 * Configure the bayer phase and video timing mux based on the
215 * operation mode (passthrough or test pattern generation). The test
216 * pattern can be modified by the control set handler, we thus need to
217 * take the control lock here to avoid races.
218 */
219 mutex_lock(xtpg->ctrl_handler.lock);
220
221 xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
222 XTPG_PATTERN_MASK, xtpg->pattern->cur.val);
223
224 /*
225 * Switching between passthrough and test pattern generation modes isn't
226 * allowed during streaming, update the control range accordingly.
227 */
228 passthrough = xtpg->pattern->cur.val == 0;
229 __xtpg_update_pattern_control(xtpg, passthrough, !passthrough);
230
231 xtpg->streaming = true;
232
233 mutex_unlock(xtpg->ctrl_handler.lock);
234
235 /*
236 * For TPG v5.0, the bayer phase needs to be off for the pass through
237 * mode, otherwise the external input would be subsampled.
238 */
239 bayer_phase = passthrough ? XTPG_BAYER_PHASE_OFF
240 : xtpg_get_bayer_phase(xtpg->formats[0].code);
241 xvip_write(&xtpg->xvip, XTPG_BAYER_PHASE, bayer_phase);
242
243 if (xtpg->vtmux_gpio)
244 gpiod_set_value_cansleep(xtpg->vtmux_gpio, !passthrough);
245
246 xvip_start(&xtpg->xvip);
247
248 return 0;
249 }
250
251 /* -----------------------------------------------------------------------------
252 * V4L2 Subdevice Pad Operations
253 */
254
255 static struct v4l2_mbus_framefmt *
256 __xtpg_get_pad_format(struct xtpg_device *xtpg,
257 struct v4l2_subdev_pad_config *cfg,
258 unsigned int pad, u32 which)
259 {
260 switch (which) {
261 case V4L2_SUBDEV_FORMAT_TRY:
262 return v4l2_subdev_get_try_format(&xtpg->xvip.subdev, cfg, pad);
263 case V4L2_SUBDEV_FORMAT_ACTIVE:
264 return &xtpg->formats[pad];
265 default:
266 return NULL;
267 }
268 }
269
270 static int xtpg_get_format(struct v4l2_subdev *subdev,
271 struct v4l2_subdev_pad_config *cfg,
272 struct v4l2_subdev_format *fmt)
273 {
274 struct xtpg_device *xtpg = to_tpg(subdev);
275
276 fmt->format = *__xtpg_get_pad_format(xtpg, cfg, fmt->pad, fmt->which);
277
278 return 0;
279 }
280
281 static int xtpg_set_format(struct v4l2_subdev *subdev,
282 struct v4l2_subdev_pad_config *cfg,
283 struct v4l2_subdev_format *fmt)
284 {
285 struct xtpg_device *xtpg = to_tpg(subdev);
286 struct v4l2_mbus_framefmt *__format;
287 u32 bayer_phase;
288
289 __format = __xtpg_get_pad_format(xtpg, cfg, fmt->pad, fmt->which);
290
291 /* In two pads mode the source pad format is always identical to the
292 * sink pad format.
293 */
294 if (xtpg->npads == 2 && fmt->pad == 1) {
295 fmt->format = *__format;
296 return 0;
297 }
298
299 /* Bayer phase is configurable at runtime */
300 if (xtpg->bayer) {
301 bayer_phase = xtpg_get_bayer_phase(fmt->format.code);
302 if (bayer_phase != XTPG_BAYER_PHASE_OFF)
303 __format->code = fmt->format.code;
304 }
305
306 xvip_set_format_size(__format, fmt);
307
308 fmt->format = *__format;
309
310 /* Propagate the format to the source pad. */
311 if (xtpg->npads == 2) {
312 __format = __xtpg_get_pad_format(xtpg, cfg, 1, fmt->which);
313 *__format = fmt->format;
314 }
315
316 return 0;
317 }
318
319 /* -----------------------------------------------------------------------------
320 * V4L2 Subdevice Operations
321 */
322
323 static int xtpg_enum_frame_size(struct v4l2_subdev *subdev,
324 struct v4l2_subdev_pad_config *cfg,
325 struct v4l2_subdev_frame_size_enum *fse)
326 {
327 struct v4l2_mbus_framefmt *format;
328
329 format = v4l2_subdev_get_try_format(subdev, cfg, fse->pad);
330
331 if (fse->index || fse->code != format->code)
332 return -EINVAL;
333
334 /* Min / max values for pad 0 is always fixed in both one and two pads
335 * modes. In two pads mode, the source pad(= 1) size is identical to
336 * the sink pad size */
337 if (fse->pad == 0) {
338 fse->min_width = XVIP_MIN_WIDTH;
339 fse->max_width = XVIP_MAX_WIDTH;
340 fse->min_height = XVIP_MIN_HEIGHT;
341 fse->max_height = XVIP_MAX_HEIGHT;
342 } else {
343 fse->min_width = format->width;
344 fse->max_width = format->width;
345 fse->min_height = format->height;
346 fse->max_height = format->height;
347 }
348
349 return 0;
350 }
351
352 static int xtpg_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
353 {
354 struct xtpg_device *xtpg = to_tpg(subdev);
355 struct v4l2_mbus_framefmt *format;
356
357 format = v4l2_subdev_get_try_format(subdev, fh->pad, 0);
358 *format = xtpg->default_format;
359
360 if (xtpg->npads == 2) {
361 format = v4l2_subdev_get_try_format(subdev, fh->pad, 1);
362 *format = xtpg->default_format;
363 }
364
365 return 0;
366 }
367
368 static int xtpg_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
369 {
370 return 0;
371 }
372
373 static int xtpg_s_ctrl(struct v4l2_ctrl *ctrl)
374 {
375 struct xtpg_device *xtpg = container_of(ctrl->handler,
376 struct xtpg_device,
377 ctrl_handler);
378 switch (ctrl->id) {
379 case V4L2_CID_TEST_PATTERN:
380 xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
381 XTPG_PATTERN_MASK, ctrl->val);
382 return 0;
383 case V4L2_CID_XILINX_TPG_CROSS_HAIRS:
384 xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
385 XTPG_PATTERN_CONTROL_CROSS_HAIRS, ctrl->val);
386 return 0;
387 case V4L2_CID_XILINX_TPG_MOVING_BOX:
388 xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
389 XTPG_PATTERN_CONTROL_MOVING_BOX, ctrl->val);
390 return 0;
391 case V4L2_CID_XILINX_TPG_COLOR_MASK:
392 xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
393 XTPG_PATTERN_CONTROL_COLOR_MASK_MASK,
394 ctrl->val <<
395 XTPG_PATTERN_CONTROL_COLOR_MASK_SHIFT);
396 return 0;
397 case V4L2_CID_XILINX_TPG_STUCK_PIXEL:
398 xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
399 XTPG_PATTERN_CONTROL_STUCK_PIXEL, ctrl->val);
400 return 0;
401 case V4L2_CID_XILINX_TPG_NOISE:
402 xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
403 XTPG_PATTERN_CONTROL_NOISE, ctrl->val);
404 return 0;
405 case V4L2_CID_XILINX_TPG_MOTION:
406 xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
407 XTPG_PATTERN_CONTROL_MOTION, ctrl->val);
408 return 0;
409 case V4L2_CID_XILINX_TPG_MOTION_SPEED:
410 xvip_write(&xtpg->xvip, XTPG_MOTION_SPEED, ctrl->val);
411 return 0;
412 case V4L2_CID_XILINX_TPG_CROSS_HAIR_ROW:
413 xvip_clr_and_set(&xtpg->xvip, XTPG_CROSS_HAIRS,
414 XTPG_CROSS_HAIRS_ROW_MASK,
415 ctrl->val << XTPG_CROSS_HAIRS_ROW_SHIFT);
416 return 0;
417 case V4L2_CID_XILINX_TPG_CROSS_HAIR_COLUMN:
418 xvip_clr_and_set(&xtpg->xvip, XTPG_CROSS_HAIRS,
419 XTPG_CROSS_HAIRS_COLUMN_MASK,
420 ctrl->val << XTPG_CROSS_HAIRS_COLUMN_SHIFT);
421 return 0;
422 case V4L2_CID_XILINX_TPG_ZPLATE_HOR_START:
423 xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_HOR_CONTROL,
424 XTPG_ZPLATE_START_MASK,
425 ctrl->val << XTPG_ZPLATE_START_SHIFT);
426 return 0;
427 case V4L2_CID_XILINX_TPG_ZPLATE_HOR_SPEED:
428 xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_HOR_CONTROL,
429 XTPG_ZPLATE_SPEED_MASK,
430 ctrl->val << XTPG_ZPLATE_SPEED_SHIFT);
431 return 0;
432 case V4L2_CID_XILINX_TPG_ZPLATE_VER_START:
433 xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_VER_CONTROL,
434 XTPG_ZPLATE_START_MASK,
435 ctrl->val << XTPG_ZPLATE_START_SHIFT);
436 return 0;
437 case V4L2_CID_XILINX_TPG_ZPLATE_VER_SPEED:
438 xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_VER_CONTROL,
439 XTPG_ZPLATE_SPEED_MASK,
440 ctrl->val << XTPG_ZPLATE_SPEED_SHIFT);
441 return 0;
442 case V4L2_CID_XILINX_TPG_BOX_SIZE:
443 xvip_write(&xtpg->xvip, XTPG_BOX_SIZE, ctrl->val);
444 return 0;
445 case V4L2_CID_XILINX_TPG_BOX_COLOR:
446 xvip_write(&xtpg->xvip, XTPG_BOX_COLOR, ctrl->val);
447 return 0;
448 case V4L2_CID_XILINX_TPG_STUCK_PIXEL_THRESH:
449 xvip_write(&xtpg->xvip, XTPG_STUCK_PIXEL_THRESH, ctrl->val);
450 return 0;
451 case V4L2_CID_XILINX_TPG_NOISE_GAIN:
452 xvip_write(&xtpg->xvip, XTPG_NOISE_GAIN, ctrl->val);
453 return 0;
454 }
455
456 return 0;
457 }
458
459 static const struct v4l2_ctrl_ops xtpg_ctrl_ops = {
460 .s_ctrl = xtpg_s_ctrl,
461 };
462
463 static const struct v4l2_subdev_core_ops xtpg_core_ops = {
464 };
465
466 static const struct v4l2_subdev_video_ops xtpg_video_ops = {
467 .s_stream = xtpg_s_stream,
468 };
469
470 static const struct v4l2_subdev_pad_ops xtpg_pad_ops = {
471 .enum_mbus_code = xvip_enum_mbus_code,
472 .enum_frame_size = xtpg_enum_frame_size,
473 .get_fmt = xtpg_get_format,
474 .set_fmt = xtpg_set_format,
475 };
476
477 static const struct v4l2_subdev_ops xtpg_ops = {
478 .core = &xtpg_core_ops,
479 .video = &xtpg_video_ops,
480 .pad = &xtpg_pad_ops,
481 };
482
483 static const struct v4l2_subdev_internal_ops xtpg_internal_ops = {
484 .open = xtpg_open,
485 .close = xtpg_close,
486 };
487
488 /*
489 * Control Config
490 */
491
492 static const char *const xtpg_pattern_strings[] = {
493 "Passthrough",
494 "Horizontal Ramp",
495 "Vertical Ramp",
496 "Temporal Ramp",
497 "Solid Red",
498 "Solid Green",
499 "Solid Blue",
500 "Solid Black",
501 "Solid White",
502 "Color Bars",
503 "Zone Plate",
504 "Tartan Color Bars",
505 "Cross Hatch",
506 "None",
507 "Vertical/Horizontal Ramps",
508 "Black/White Checker Board",
509 };
510
511 static struct v4l2_ctrl_config xtpg_ctrls[] = {
512 {
513 .ops = &xtpg_ctrl_ops,
514 .id = V4L2_CID_XILINX_TPG_CROSS_HAIRS,
515 .name = "Test Pattern: Cross Hairs",
516 .type = V4L2_CTRL_TYPE_BOOLEAN,
517 .min = false,
518 .max = true,
519 .step = 1,
520 .def = 0,
521 }, {
522 .ops = &xtpg_ctrl_ops,
523 .id = V4L2_CID_XILINX_TPG_MOVING_BOX,
524 .name = "Test Pattern: Moving Box",
525 .type = V4L2_CTRL_TYPE_BOOLEAN,
526 .min = false,
527 .max = true,
528 .step = 1,
529 .def = 0,
530 }, {
531 .ops = &xtpg_ctrl_ops,
532 .id = V4L2_CID_XILINX_TPG_COLOR_MASK,
533 .name = "Test Pattern: Color Mask",
534 .type = V4L2_CTRL_TYPE_BITMASK,
535 .min = 0,
536 .max = 0xf,
537 .def = 0,
538 }, {
539 .ops = &xtpg_ctrl_ops,
540 .id = V4L2_CID_XILINX_TPG_STUCK_PIXEL,
541 .name = "Test Pattern: Stuck Pixel",
542 .type = V4L2_CTRL_TYPE_BOOLEAN,
543 .min = false,
544 .max = true,
545 .step = 1,
546 .def = 0,
547 }, {
548 .ops = &xtpg_ctrl_ops,
549 .id = V4L2_CID_XILINX_TPG_NOISE,
550 .name = "Test Pattern: Noise",
551 .type = V4L2_CTRL_TYPE_BOOLEAN,
552 .min = false,
553 .max = true,
554 .step = 1,
555 .def = 0,
556 }, {
557 .ops = &xtpg_ctrl_ops,
558 .id = V4L2_CID_XILINX_TPG_MOTION,
559 .name = "Test Pattern: Motion",
560 .type = V4L2_CTRL_TYPE_BOOLEAN,
561 .min = false,
562 .max = true,
563 .step = 1,
564 .def = 0,
565 }, {
566 .ops = &xtpg_ctrl_ops,
567 .id = V4L2_CID_XILINX_TPG_MOTION_SPEED,
568 .name = "Test Pattern: Motion Speed",
569 .type = V4L2_CTRL_TYPE_INTEGER,
570 .min = 0,
571 .max = (1 << 8) - 1,
572 .step = 1,
573 .def = 4,
574 .flags = V4L2_CTRL_FLAG_SLIDER,
575 }, {
576 .ops = &xtpg_ctrl_ops,
577 .id = V4L2_CID_XILINX_TPG_CROSS_HAIR_ROW,
578 .name = "Test Pattern: Cross Hairs Row",
579 .type = V4L2_CTRL_TYPE_INTEGER,
580 .min = 0,
581 .max = (1 << 12) - 1,
582 .step = 1,
583 .def = 0x64,
584 .flags = V4L2_CTRL_FLAG_SLIDER,
585 }, {
586 .ops = &xtpg_ctrl_ops,
587 .id = V4L2_CID_XILINX_TPG_CROSS_HAIR_COLUMN,
588 .name = "Test Pattern: Cross Hairs Column",
589 .type = V4L2_CTRL_TYPE_INTEGER,
590 .min = 0,
591 .max = (1 << 12) - 1,
592 .step = 1,
593 .def = 0x64,
594 .flags = V4L2_CTRL_FLAG_SLIDER,
595 }, {
596 .ops = &xtpg_ctrl_ops,
597 .id = V4L2_CID_XILINX_TPG_ZPLATE_HOR_START,
598 .name = "Test Pattern: Zplate Horizontal Start Pos",
599 .type = V4L2_CTRL_TYPE_INTEGER,
600 .min = 0,
601 .max = (1 << 16) - 1,
602 .step = 1,
603 .def = 0x1e,
604 .flags = V4L2_CTRL_FLAG_SLIDER,
605 }, {
606 .ops = &xtpg_ctrl_ops,
607 .id = V4L2_CID_XILINX_TPG_ZPLATE_HOR_SPEED,
608 .name = "Test Pattern: Zplate Horizontal Speed",
609 .type = V4L2_CTRL_TYPE_INTEGER,
610 .min = 0,
611 .max = (1 << 16) - 1,
612 .step = 1,
613 .def = 0,
614 .flags = V4L2_CTRL_FLAG_SLIDER,
615 }, {
616 .ops = &xtpg_ctrl_ops,
617 .id = V4L2_CID_XILINX_TPG_ZPLATE_VER_START,
618 .name = "Test Pattern: Zplate Vertical Start Pos",
619 .type = V4L2_CTRL_TYPE_INTEGER,
620 .min = 0,
621 .max = (1 << 16) - 1,
622 .step = 1,
623 .def = 1,
624 .flags = V4L2_CTRL_FLAG_SLIDER,
625 }, {
626 .ops = &xtpg_ctrl_ops,
627 .id = V4L2_CID_XILINX_TPG_ZPLATE_VER_SPEED,
628 .name = "Test Pattern: Zplate Vertical Speed",
629 .type = V4L2_CTRL_TYPE_INTEGER,
630 .min = 0,
631 .max = (1 << 16) - 1,
632 .step = 1,
633 .def = 0,
634 .flags = V4L2_CTRL_FLAG_SLIDER,
635 }, {
636 .ops = &xtpg_ctrl_ops,
637 .id = V4L2_CID_XILINX_TPG_BOX_SIZE,
638 .name = "Test Pattern: Box Size",
639 .type = V4L2_CTRL_TYPE_INTEGER,
640 .min = 0,
641 .max = (1 << 12) - 1,
642 .step = 1,
643 .def = 0x32,
644 .flags = V4L2_CTRL_FLAG_SLIDER,
645 }, {
646 .ops = &xtpg_ctrl_ops,
647 .id = V4L2_CID_XILINX_TPG_BOX_COLOR,
648 .name = "Test Pattern: Box Color(RGB)",
649 .type = V4L2_CTRL_TYPE_INTEGER,
650 .min = 0,
651 .max = (1 << 24) - 1,
652 .step = 1,
653 .def = 0,
654 }, {
655 .ops = &xtpg_ctrl_ops,
656 .id = V4L2_CID_XILINX_TPG_STUCK_PIXEL_THRESH,
657 .name = "Test Pattern: Stuck Pixel threshold",
658 .type = V4L2_CTRL_TYPE_INTEGER,
659 .min = 0,
660 .max = (1 << 16) - 1,
661 .step = 1,
662 .def = 0,
663 .flags = V4L2_CTRL_FLAG_SLIDER,
664 }, {
665 .ops = &xtpg_ctrl_ops,
666 .id = V4L2_CID_XILINX_TPG_NOISE_GAIN,
667 .name = "Test Pattern: Noise Gain",
668 .type = V4L2_CTRL_TYPE_INTEGER,
669 .min = 0,
670 .max = (1 << 8) - 1,
671 .step = 1,
672 .def = 0,
673 .flags = V4L2_CTRL_FLAG_SLIDER,
674 },
675 };
676
677 /* -----------------------------------------------------------------------------
678 * Media Operations
679 */
680
681 static const struct media_entity_operations xtpg_media_ops = {
682 .link_validate = v4l2_subdev_link_validate,
683 };
684
685 /* -----------------------------------------------------------------------------
686 * Power Management
687 */
688
689 static int __maybe_unused xtpg_pm_suspend(struct device *dev)
690 {
691 struct xtpg_device *xtpg = dev_get_drvdata(dev);
692
693 xvip_suspend(&xtpg->xvip);
694
695 return 0;
696 }
697
698 static int __maybe_unused xtpg_pm_resume(struct device *dev)
699 {
700 struct xtpg_device *xtpg = dev_get_drvdata(dev);
701
702 xvip_resume(&xtpg->xvip);
703
704 return 0;
705 }
706
707 /* -----------------------------------------------------------------------------
708 * Platform Device Driver
709 */
710
711 static int xtpg_parse_of(struct xtpg_device *xtpg)
712 {
713 struct device *dev = xtpg->xvip.dev;
714 struct device_node *node = xtpg->xvip.dev->of_node;
715 struct device_node *ports;
716 struct device_node *port;
717 unsigned int nports = 0;
718 bool has_endpoint = false;
719
720 ports = of_get_child_by_name(node, "ports");
721 if (ports == NULL)
722 ports = node;
723
724 for_each_child_of_node(ports, port) {
725 const struct xvip_video_format *format;
726 struct device_node *endpoint;
727
728 if (!port->name || of_node_cmp(port->name, "port"))
729 continue;
730
731 format = xvip_of_get_format(port);
732 if (IS_ERR(format)) {
733 dev_err(dev, "invalid format in DT");
734 of_node_put(port);
735 return PTR_ERR(format);
736 }
737
738 /* Get and check the format description */
739 if (!xtpg->vip_format) {
740 xtpg->vip_format = format;
741 } else if (xtpg->vip_format != format) {
742 dev_err(dev, "in/out format mismatch in DT");
743 of_node_put(port);
744 return -EINVAL;
745 }
746
747 if (nports == 0) {
748 endpoint = of_get_next_child(port, NULL);
749 if (endpoint)
750 has_endpoint = true;
751 of_node_put(endpoint);
752 }
753
754 /* Count the number of ports. */
755 nports++;
756 }
757
758 if (nports != 1 && nports != 2) {
759 dev_err(dev, "invalid number of ports %u\n", nports);
760 return -EINVAL;
761 }
762
763 xtpg->npads = nports;
764 if (nports == 2 && has_endpoint)
765 xtpg->has_input = true;
766
767 return 0;
768 }
769
770 static int xtpg_probe(struct platform_device *pdev)
771 {
772 struct v4l2_subdev *subdev;
773 struct xtpg_device *xtpg;
774 u32 i, bayer_phase;
775 int ret;
776
777 xtpg = devm_kzalloc(&pdev->dev, sizeof(*xtpg), GFP_KERNEL);
778 if (!xtpg)
779 return -ENOMEM;
780
781 xtpg->xvip.dev = &pdev->dev;
782
783 ret = xtpg_parse_of(xtpg);
784 if (ret < 0)
785 return ret;
786
787 ret = xvip_init_resources(&xtpg->xvip);
788 if (ret < 0)
789 return ret;
790
791 xtpg->vtmux_gpio = devm_gpiod_get_optional(&pdev->dev, "timing",
792 GPIOD_OUT_HIGH);
793 if (IS_ERR(xtpg->vtmux_gpio)) {
794 ret = PTR_ERR(xtpg->vtmux_gpio);
795 goto error_resource;
796 }
797
798 xtpg->vtc = xvtc_of_get(pdev->dev.of_node);
799 if (IS_ERR(xtpg->vtc)) {
800 ret = PTR_ERR(xtpg->vtc);
801 goto error_resource;
802 }
803
804 /* Reset and initialize the core */
805 xvip_reset(&xtpg->xvip);
806
807 /* Initialize V4L2 subdevice and media entity. Pad numbers depend on the
808 * number of pads.
809 */
810 if (xtpg->npads == 2) {
811 xtpg->pads[0].flags = MEDIA_PAD_FL_SINK;
812 xtpg->pads[1].flags = MEDIA_PAD_FL_SOURCE;
813 } else {
814 xtpg->pads[0].flags = MEDIA_PAD_FL_SOURCE;
815 }
816
817 /* Initialize the default format */
818 xtpg->default_format.code = xtpg->vip_format->code;
819 xtpg->default_format.field = V4L2_FIELD_NONE;
820 xtpg->default_format.colorspace = V4L2_COLORSPACE_SRGB;
821 xvip_get_frame_size(&xtpg->xvip, &xtpg->default_format);
822
823 bayer_phase = xtpg_get_bayer_phase(xtpg->vip_format->code);
824 if (bayer_phase != XTPG_BAYER_PHASE_OFF)
825 xtpg->bayer = true;
826
827 xtpg->formats[0] = xtpg->default_format;
828 if (xtpg->npads == 2)
829 xtpg->formats[1] = xtpg->default_format;
830
831 /* Initialize V4L2 subdevice and media entity */
832 subdev = &xtpg->xvip.subdev;
833 v4l2_subdev_init(subdev, &xtpg_ops);
834 subdev->dev = &pdev->dev;
835 subdev->internal_ops = &xtpg_internal_ops;
836 strlcpy(subdev->name, dev_name(&pdev->dev), sizeof(subdev->name));
837 v4l2_set_subdevdata(subdev, xtpg);
838 subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
839 subdev->entity.ops = &xtpg_media_ops;
840
841 ret = media_entity_pads_init(&subdev->entity, xtpg->npads, xtpg->pads);
842 if (ret < 0)
843 goto error;
844
845 v4l2_ctrl_handler_init(&xtpg->ctrl_handler, 3 + ARRAY_SIZE(xtpg_ctrls));
846
847 xtpg->vblank = v4l2_ctrl_new_std(&xtpg->ctrl_handler, &xtpg_ctrl_ops,
848 V4L2_CID_VBLANK, XTPG_MIN_VBLANK,
849 XTPG_MAX_VBLANK, 1, 100);
850 xtpg->hblank = v4l2_ctrl_new_std(&xtpg->ctrl_handler, &xtpg_ctrl_ops,
851 V4L2_CID_HBLANK, XTPG_MIN_HBLANK,
852 XTPG_MAX_HBLANK, 1, 100);
853 xtpg->pattern = v4l2_ctrl_new_std_menu_items(&xtpg->ctrl_handler,
854 &xtpg_ctrl_ops, V4L2_CID_TEST_PATTERN,
855 ARRAY_SIZE(xtpg_pattern_strings) - 1,
856 1, 9, xtpg_pattern_strings);
857
858 for (i = 0; i < ARRAY_SIZE(xtpg_ctrls); i++)
859 v4l2_ctrl_new_custom(&xtpg->ctrl_handler, &xtpg_ctrls[i], NULL);
860
861 if (xtpg->ctrl_handler.error) {
862 dev_err(&pdev->dev, "failed to add controls\n");
863 ret = xtpg->ctrl_handler.error;
864 goto error;
865 }
866 subdev->ctrl_handler = &xtpg->ctrl_handler;
867
868 xtpg_update_pattern_control(xtpg, true, true);
869
870 ret = v4l2_ctrl_handler_setup(&xtpg->ctrl_handler);
871 if (ret < 0) {
872 dev_err(&pdev->dev, "failed to set controls\n");
873 goto error;
874 }
875
876 platform_set_drvdata(pdev, xtpg);
877
878 xvip_print_version(&xtpg->xvip);
879
880 ret = v4l2_async_register_subdev(subdev);
881 if (ret < 0) {
882 dev_err(&pdev->dev, "failed to register subdev\n");
883 goto error;
884 }
885
886 return 0;
887
888 error:
889 v4l2_ctrl_handler_free(&xtpg->ctrl_handler);
890 media_entity_cleanup(&subdev->entity);
891 xvtc_put(xtpg->vtc);
892 error_resource:
893 xvip_cleanup_resources(&xtpg->xvip);
894 return ret;
895 }
896
897 static int xtpg_remove(struct platform_device *pdev)
898 {
899 struct xtpg_device *xtpg = platform_get_drvdata(pdev);
900 struct v4l2_subdev *subdev = &xtpg->xvip.subdev;
901
902 v4l2_async_unregister_subdev(subdev);
903 v4l2_ctrl_handler_free(&xtpg->ctrl_handler);
904 media_entity_cleanup(&subdev->entity);
905
906 xvip_cleanup_resources(&xtpg->xvip);
907
908 return 0;
909 }
910
911 static SIMPLE_DEV_PM_OPS(xtpg_pm_ops, xtpg_pm_suspend, xtpg_pm_resume);
912
913 static const struct of_device_id xtpg_of_id_table[] = {
914 { .compatible = "xlnx,v-tpg-5.0" },
915 { }
916 };
917 MODULE_DEVICE_TABLE(of, xtpg_of_id_table);
918
919 static struct platform_driver xtpg_driver = {
920 .driver = {
921 .name = "xilinx-tpg",
922 .pm = &xtpg_pm_ops,
923 .of_match_table = xtpg_of_id_table,
924 },
925 .probe = xtpg_probe,
926 .remove = xtpg_remove,
927 };
928
929 module_platform_driver(xtpg_driver);
930
931 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
932 MODULE_DESCRIPTION("Xilinx Test Pattern Generator Driver");
933 MODULE_LICENSE("GPL v2");
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