1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * camss-vfe.c
4 *
5 * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module
6 *
7 * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
8 * Copyright (C) 2015-2018 Linaro Ltd.
9 */
10 #include <linux/clk.h>
11 #include <linux/completion.h>
12 #include <linux/interrupt.h>
13 #include <linux/iommu.h>
14 #include <linux/mutex.h>
15 #include <linux/of.h>
16 #include <linux/platform_device.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/spinlock_types.h>
19 #include <linux/spinlock.h>
20 #include <media/media-entity.h>
21 #include <media/v4l2-device.h>
22 #include <media/v4l2-subdev.h>
23
24 #include "camss-vfe.h"
25 #include "camss.h"
26
27 #define MSM_VFE_NAME "msm_vfe"
28
29 /* VFE reset timeout */
30 #define VFE_RESET_TIMEOUT_MS 50
31
32 #define SCALER_RATIO_MAX 16
33
34 struct vfe_format {
35 u32 code;
36 u8 bpp;
37 };
38
39 static const struct vfe_format formats_rdi_8x16[] = {
40 { MEDIA_BUS_FMT_UYVY8_2X8, 8 },
41 { MEDIA_BUS_FMT_VYUY8_2X8, 8 },
42 { MEDIA_BUS_FMT_YUYV8_2X8, 8 },
43 { MEDIA_BUS_FMT_YVYU8_2X8, 8 },
44 { MEDIA_BUS_FMT_SBGGR8_1X8, 8 },
45 { MEDIA_BUS_FMT_SGBRG8_1X8, 8 },
46 { MEDIA_BUS_FMT_SGRBG8_1X8, 8 },
47 { MEDIA_BUS_FMT_SRGGB8_1X8, 8 },
48 { MEDIA_BUS_FMT_SBGGR10_1X10, 10 },
49 { MEDIA_BUS_FMT_SGBRG10_1X10, 10 },
50 { MEDIA_BUS_FMT_SGRBG10_1X10, 10 },
51 { MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
52 { MEDIA_BUS_FMT_SBGGR12_1X12, 12 },
53 { MEDIA_BUS_FMT_SGBRG12_1X12, 12 },
54 { MEDIA_BUS_FMT_SGRBG12_1X12, 12 },
55 { MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
56 { MEDIA_BUS_FMT_Y10_1X10, 10 },
57 };
58
59 static const struct vfe_format formats_pix_8x16[] = {
60 { MEDIA_BUS_FMT_UYVY8_2X8, 8 },
61 { MEDIA_BUS_FMT_VYUY8_2X8, 8 },
62 { MEDIA_BUS_FMT_YUYV8_2X8, 8 },
63 { MEDIA_BUS_FMT_YVYU8_2X8, 8 },
64 };
65
66 static const struct vfe_format formats_rdi_8x96[] = {
67 { MEDIA_BUS_FMT_UYVY8_2X8, 8 },
68 { MEDIA_BUS_FMT_VYUY8_2X8, 8 },
69 { MEDIA_BUS_FMT_YUYV8_2X8, 8 },
70 { MEDIA_BUS_FMT_YVYU8_2X8, 8 },
71 { MEDIA_BUS_FMT_SBGGR8_1X8, 8 },
72 { MEDIA_BUS_FMT_SGBRG8_1X8, 8 },
73 { MEDIA_BUS_FMT_SGRBG8_1X8, 8 },
74 { MEDIA_BUS_FMT_SRGGB8_1X8, 8 },
75 { MEDIA_BUS_FMT_SBGGR10_1X10, 10 },
76 { MEDIA_BUS_FMT_SGBRG10_1X10, 10 },
77 { MEDIA_BUS_FMT_SGRBG10_1X10, 10 },
78 { MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
79 { MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, 16 },
80 { MEDIA_BUS_FMT_SBGGR12_1X12, 12 },
81 { MEDIA_BUS_FMT_SGBRG12_1X12, 12 },
82 { MEDIA_BUS_FMT_SGRBG12_1X12, 12 },
83 { MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
84 { MEDIA_BUS_FMT_SBGGR14_1X14, 14 },
85 { MEDIA_BUS_FMT_SGBRG14_1X14, 14 },
86 { MEDIA_BUS_FMT_SGRBG14_1X14, 14 },
87 { MEDIA_BUS_FMT_SRGGB14_1X14, 14 },
88 { MEDIA_BUS_FMT_Y10_1X10, 10 },
89 { MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, 16 },
90 };
91
92 static const struct vfe_format formats_pix_8x96[] = {
93 { MEDIA_BUS_FMT_UYVY8_2X8, 8 },
94 { MEDIA_BUS_FMT_VYUY8_2X8, 8 },
95 { MEDIA_BUS_FMT_YUYV8_2X8, 8 },
96 { MEDIA_BUS_FMT_YVYU8_2X8, 8 },
97 };
98
99 static const struct vfe_format formats_rdi_845[] = {
100 { MEDIA_BUS_FMT_UYVY8_2X8, 8 },
101 { MEDIA_BUS_FMT_VYUY8_2X8, 8 },
102 { MEDIA_BUS_FMT_YUYV8_2X8, 8 },
103 { MEDIA_BUS_FMT_YVYU8_2X8, 8 },
104 { MEDIA_BUS_FMT_SBGGR8_1X8, 8 },
105 { MEDIA_BUS_FMT_SGBRG8_1X8, 8 },
106 { MEDIA_BUS_FMT_SGRBG8_1X8, 8 },
107 { MEDIA_BUS_FMT_SRGGB8_1X8, 8 },
108 { MEDIA_BUS_FMT_SBGGR10_1X10, 10 },
109 { MEDIA_BUS_FMT_SGBRG10_1X10, 10 },
110 { MEDIA_BUS_FMT_SGRBG10_1X10, 10 },
111 { MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
112 { MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, 16 },
113 { MEDIA_BUS_FMT_SBGGR12_1X12, 12 },
114 { MEDIA_BUS_FMT_SGBRG12_1X12, 12 },
115 { MEDIA_BUS_FMT_SGRBG12_1X12, 12 },
116 { MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
117 { MEDIA_BUS_FMT_SBGGR14_1X14, 14 },
118 { MEDIA_BUS_FMT_SGBRG14_1X14, 14 },
119 { MEDIA_BUS_FMT_SGRBG14_1X14, 14 },
120 { MEDIA_BUS_FMT_SRGGB14_1X14, 14 },
121 { MEDIA_BUS_FMT_Y8_1X8, 8 },
122 { MEDIA_BUS_FMT_Y10_1X10, 10 },
123 { MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, 16 },
124 };
125
126 /*
127 * vfe_get_bpp - map media bus format to bits per pixel
128 * @formats: supported media bus formats array
129 * @nformats: size of @formats array
130 * @code: media bus format code
131 *
132 * Return number of bits per pixel
133 */
vfe_get_bpp(const struct vfe_format * formats,unsigned int nformats,u32 code)134 static u8 vfe_get_bpp(const struct vfe_format *formats,
135 unsigned int nformats, u32 code)
136 {
137 unsigned int i;
138
139 for (i = 0; i < nformats; i++)
140 if (code == formats[i].code)
141 return formats[i].bpp;
142
143 WARN(1, "Unknown format\n");
144
145 return formats[0].bpp;
146 }
147
vfe_find_code(u32 * code,unsigned int n_code,unsigned int index,u32 req_code)148 static u32 vfe_find_code(u32 *code, unsigned int n_code,
149 unsigned int index, u32 req_code)
150 {
151 int i;
152
153 if (!req_code && (index >= n_code))
154 return 0;
155
156 for (i = 0; i < n_code; i++)
157 if (req_code) {
158 if (req_code == code[i])
159 return req_code;
160 } else {
161 if (i == index)
162 return code[i];
163 }
164
165 return code[0];
166 }
167
vfe_src_pad_code(struct vfe_line * line,u32 sink_code,unsigned int index,u32 src_req_code)168 static u32 vfe_src_pad_code(struct vfe_line *line, u32 sink_code,
169 unsigned int index, u32 src_req_code)
170 {
171 struct vfe_device *vfe = to_vfe(line);
172
173 if (vfe->camss->version == CAMSS_8x16)
174 switch (sink_code) {
175 case MEDIA_BUS_FMT_YUYV8_2X8:
176 {
177 u32 src_code[] = {
178 MEDIA_BUS_FMT_YUYV8_2X8,
179 MEDIA_BUS_FMT_YUYV8_1_5X8,
180 };
181
182 return vfe_find_code(src_code, ARRAY_SIZE(src_code),
183 index, src_req_code);
184 }
185 case MEDIA_BUS_FMT_YVYU8_2X8:
186 {
187 u32 src_code[] = {
188 MEDIA_BUS_FMT_YVYU8_2X8,
189 MEDIA_BUS_FMT_YVYU8_1_5X8,
190 };
191
192 return vfe_find_code(src_code, ARRAY_SIZE(src_code),
193 index, src_req_code);
194 }
195 case MEDIA_BUS_FMT_UYVY8_2X8:
196 {
197 u32 src_code[] = {
198 MEDIA_BUS_FMT_UYVY8_2X8,
199 MEDIA_BUS_FMT_UYVY8_1_5X8,
200 };
201
202 return vfe_find_code(src_code, ARRAY_SIZE(src_code),
203 index, src_req_code);
204 }
205 case MEDIA_BUS_FMT_VYUY8_2X8:
206 {
207 u32 src_code[] = {
208 MEDIA_BUS_FMT_VYUY8_2X8,
209 MEDIA_BUS_FMT_VYUY8_1_5X8,
210 };
211
212 return vfe_find_code(src_code, ARRAY_SIZE(src_code),
213 index, src_req_code);
214 }
215 default:
216 if (index > 0)
217 return 0;
218
219 return sink_code;
220 }
221 else if (vfe->camss->version == CAMSS_8x96 ||
222 vfe->camss->version == CAMSS_660 ||
223 vfe->camss->version == CAMSS_845 ||
224 vfe->camss->version == CAMSS_8250)
225 switch (sink_code) {
226 case MEDIA_BUS_FMT_YUYV8_2X8:
227 {
228 u32 src_code[] = {
229 MEDIA_BUS_FMT_YUYV8_2X8,
230 MEDIA_BUS_FMT_YVYU8_2X8,
231 MEDIA_BUS_FMT_UYVY8_2X8,
232 MEDIA_BUS_FMT_VYUY8_2X8,
233 MEDIA_BUS_FMT_YUYV8_1_5X8,
234 };
235
236 return vfe_find_code(src_code, ARRAY_SIZE(src_code),
237 index, src_req_code);
238 }
239 case MEDIA_BUS_FMT_YVYU8_2X8:
240 {
241 u32 src_code[] = {
242 MEDIA_BUS_FMT_YVYU8_2X8,
243 MEDIA_BUS_FMT_YUYV8_2X8,
244 MEDIA_BUS_FMT_UYVY8_2X8,
245 MEDIA_BUS_FMT_VYUY8_2X8,
246 MEDIA_BUS_FMT_YVYU8_1_5X8,
247 };
248
249 return vfe_find_code(src_code, ARRAY_SIZE(src_code),
250 index, src_req_code);
251 }
252 case MEDIA_BUS_FMT_UYVY8_2X8:
253 {
254 u32 src_code[] = {
255 MEDIA_BUS_FMT_UYVY8_2X8,
256 MEDIA_BUS_FMT_YUYV8_2X8,
257 MEDIA_BUS_FMT_YVYU8_2X8,
258 MEDIA_BUS_FMT_VYUY8_2X8,
259 MEDIA_BUS_FMT_UYVY8_1_5X8,
260 };
261
262 return vfe_find_code(src_code, ARRAY_SIZE(src_code),
263 index, src_req_code);
264 }
265 case MEDIA_BUS_FMT_VYUY8_2X8:
266 {
267 u32 src_code[] = {
268 MEDIA_BUS_FMT_VYUY8_2X8,
269 MEDIA_BUS_FMT_YUYV8_2X8,
270 MEDIA_BUS_FMT_YVYU8_2X8,
271 MEDIA_BUS_FMT_UYVY8_2X8,
272 MEDIA_BUS_FMT_VYUY8_1_5X8,
273 };
274
275 return vfe_find_code(src_code, ARRAY_SIZE(src_code),
276 index, src_req_code);
277 }
278 default:
279 if (index > 0)
280 return 0;
281
282 return sink_code;
283 }
284 else
285 return 0;
286 }
287
vfe_reset(struct vfe_device * vfe)288 int vfe_reset(struct vfe_device *vfe)
289 {
290 unsigned long time;
291
292 reinit_completion(&vfe->reset_complete);
293
294 vfe->ops->global_reset(vfe);
295
296 time = wait_for_completion_timeout(&vfe->reset_complete,
297 msecs_to_jiffies(VFE_RESET_TIMEOUT_MS));
298 if (!time) {
299 dev_err(vfe->camss->dev, "VFE reset timeout\n");
300 return -EIO;
301 }
302
303 return 0;
304 }
305
vfe_init_outputs(struct vfe_device * vfe)306 static void vfe_init_outputs(struct vfe_device *vfe)
307 {
308 int i;
309
310 for (i = 0; i < vfe->line_num; i++) {
311 struct vfe_output *output = &vfe->line[i].output;
312
313 output->state = VFE_OUTPUT_OFF;
314 output->buf[0] = NULL;
315 output->buf[1] = NULL;
316 INIT_LIST_HEAD(&output->pending_bufs);
317 }
318 }
319
vfe_reset_output_maps(struct vfe_device * vfe)320 static void vfe_reset_output_maps(struct vfe_device *vfe)
321 {
322 int i;
323
324 for (i = 0; i < ARRAY_SIZE(vfe->wm_output_map); i++)
325 vfe->wm_output_map[i] = VFE_LINE_NONE;
326 }
327
vfe_reserve_wm(struct vfe_device * vfe,enum vfe_line_id line_id)328 int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id)
329 {
330 int ret = -EBUSY;
331 int i;
332
333 for (i = 0; i < ARRAY_SIZE(vfe->wm_output_map); i++) {
334 if (vfe->wm_output_map[i] == VFE_LINE_NONE) {
335 vfe->wm_output_map[i] = line_id;
336 ret = i;
337 break;
338 }
339 }
340
341 return ret;
342 }
343
vfe_release_wm(struct vfe_device * vfe,u8 wm)344 int vfe_release_wm(struct vfe_device *vfe, u8 wm)
345 {
346 if (wm >= ARRAY_SIZE(vfe->wm_output_map))
347 return -EINVAL;
348
349 vfe->wm_output_map[wm] = VFE_LINE_NONE;
350
351 return 0;
352 }
353
vfe_buf_get_pending(struct vfe_output * output)354 struct camss_buffer *vfe_buf_get_pending(struct vfe_output *output)
355 {
356 struct camss_buffer *buffer = NULL;
357
358 if (!list_empty(&output->pending_bufs)) {
359 buffer = list_first_entry(&output->pending_bufs,
360 struct camss_buffer,
361 queue);
362 list_del(&buffer->queue);
363 }
364
365 return buffer;
366 }
367
vfe_buf_add_pending(struct vfe_output * output,struct camss_buffer * buffer)368 void vfe_buf_add_pending(struct vfe_output *output,
369 struct camss_buffer *buffer)
370 {
371 INIT_LIST_HEAD(&buffer->queue);
372 list_add_tail(&buffer->queue, &output->pending_bufs);
373 }
374
375 /*
376 * vfe_buf_flush_pending - Flush all pending buffers.
377 * @output: VFE output
378 * @state: vb2 buffer state
379 */
vfe_buf_flush_pending(struct vfe_output * output,enum vb2_buffer_state state)380 static void vfe_buf_flush_pending(struct vfe_output *output,
381 enum vb2_buffer_state state)
382 {
383 struct camss_buffer *buf;
384 struct camss_buffer *t;
385
386 list_for_each_entry_safe(buf, t, &output->pending_bufs, queue) {
387 vb2_buffer_done(&buf->vb.vb2_buf, state);
388 list_del(&buf->queue);
389 }
390 }
391
vfe_put_output(struct vfe_line * line)392 int vfe_put_output(struct vfe_line *line)
393 {
394 struct vfe_device *vfe = to_vfe(line);
395 struct vfe_output *output = &line->output;
396 unsigned long flags;
397 unsigned int i;
398
399 spin_lock_irqsave(&vfe->output_lock, flags);
400
401 for (i = 0; i < output->wm_num; i++)
402 vfe_release_wm(vfe, output->wm_idx[i]);
403
404 output->state = VFE_OUTPUT_OFF;
405
406 spin_unlock_irqrestore(&vfe->output_lock, flags);
407 return 0;
408 }
409
410 /**
411 * vfe_isr_comp_done() - Process composite image done interrupt
412 * @vfe: VFE Device
413 * @comp: Composite image id
414 */
vfe_isr_comp_done(struct vfe_device * vfe,u8 comp)415 void vfe_isr_comp_done(struct vfe_device *vfe, u8 comp)
416 {
417 unsigned int i;
418
419 for (i = 0; i < ARRAY_SIZE(vfe->wm_output_map); i++)
420 if (vfe->wm_output_map[i] == VFE_LINE_PIX) {
421 vfe->isr_ops.wm_done(vfe, i);
422 break;
423 }
424 }
425
vfe_isr_reset_ack(struct vfe_device * vfe)426 void vfe_isr_reset_ack(struct vfe_device *vfe)
427 {
428 complete(&vfe->reset_complete);
429 }
430
431 /*
432 * vfe_set_clock_rates - Calculate and set clock rates on VFE module
433 * @vfe: VFE device
434 *
435 * Return 0 on success or a negative error code otherwise
436 */
vfe_set_clock_rates(struct vfe_device * vfe)437 static int vfe_set_clock_rates(struct vfe_device *vfe)
438 {
439 struct device *dev = vfe->camss->dev;
440 u64 pixel_clock[VFE_LINE_NUM_MAX];
441 int i, j;
442 int ret;
443
444 for (i = VFE_LINE_RDI0; i < vfe->line_num; i++) {
445 ret = camss_get_pixel_clock(&vfe->line[i].subdev.entity,
446 &pixel_clock[i]);
447 if (ret)
448 pixel_clock[i] = 0;
449 }
450
451 for (i = 0; i < vfe->nclocks; i++) {
452 struct camss_clock *clock = &vfe->clock[i];
453
454 if (!strcmp(clock->name, "vfe0") ||
455 !strcmp(clock->name, "vfe1") ||
456 !strcmp(clock->name, "vfe_lite")) {
457 u64 min_rate = 0;
458 long rate;
459
460 for (j = VFE_LINE_RDI0; j < vfe->line_num; j++) {
461 u32 tmp;
462 u8 bpp;
463
464 if (j == VFE_LINE_PIX) {
465 tmp = pixel_clock[j];
466 } else {
467 struct vfe_line *l = &vfe->line[j];
468
469 bpp = vfe_get_bpp(l->formats,
470 l->nformats,
471 l->fmt[MSM_VFE_PAD_SINK].code);
472 tmp = pixel_clock[j] * bpp / 64;
473 }
474
475 if (min_rate < tmp)
476 min_rate = tmp;
477 }
478
479 camss_add_clock_margin(&min_rate);
480
481 for (j = 0; j < clock->nfreqs; j++)
482 if (min_rate < clock->freq[j])
483 break;
484
485 if (j == clock->nfreqs) {
486 dev_err(dev,
487 "Pixel clock is too high for VFE");
488 return -EINVAL;
489 }
490
491 /* if sensor pixel clock is not available */
492 /* set highest possible VFE clock rate */
493 if (min_rate == 0)
494 j = clock->nfreqs - 1;
495
496 rate = clk_round_rate(clock->clk, clock->freq[j]);
497 if (rate < 0) {
498 dev_err(dev, "clk round rate failed: %ld\n",
499 rate);
500 return -EINVAL;
501 }
502
503 ret = clk_set_rate(clock->clk, rate);
504 if (ret < 0) {
505 dev_err(dev, "clk set rate failed: %d\n", ret);
506 return ret;
507 }
508 }
509 }
510
511 return 0;
512 }
513
514 /*
515 * vfe_check_clock_rates - Check current clock rates on VFE module
516 * @vfe: VFE device
517 *
518 * Return 0 if current clock rates are suitable for a new pipeline
519 * or a negative error code otherwise
520 */
vfe_check_clock_rates(struct vfe_device * vfe)521 static int vfe_check_clock_rates(struct vfe_device *vfe)
522 {
523 u64 pixel_clock[VFE_LINE_NUM_MAX];
524 int i, j;
525 int ret;
526
527 for (i = VFE_LINE_RDI0; i < vfe->line_num; i++) {
528 ret = camss_get_pixel_clock(&vfe->line[i].subdev.entity,
529 &pixel_clock[i]);
530 if (ret)
531 pixel_clock[i] = 0;
532 }
533
534 for (i = 0; i < vfe->nclocks; i++) {
535 struct camss_clock *clock = &vfe->clock[i];
536
537 if (!strcmp(clock->name, "vfe0") ||
538 !strcmp(clock->name, "vfe1")) {
539 u64 min_rate = 0;
540 unsigned long rate;
541
542 for (j = VFE_LINE_RDI0; j < vfe->line_num; j++) {
543 u32 tmp;
544 u8 bpp;
545
546 if (j == VFE_LINE_PIX) {
547 tmp = pixel_clock[j];
548 } else {
549 struct vfe_line *l = &vfe->line[j];
550
551 bpp = vfe_get_bpp(l->formats,
552 l->nformats,
553 l->fmt[MSM_VFE_PAD_SINK].code);
554 tmp = pixel_clock[j] * bpp / 64;
555 }
556
557 if (min_rate < tmp)
558 min_rate = tmp;
559 }
560
561 camss_add_clock_margin(&min_rate);
562
563 rate = clk_get_rate(clock->clk);
564 if (rate < min_rate)
565 return -EBUSY;
566 }
567 }
568
569 return 0;
570 }
571
572 /*
573 * vfe_get - Power up and reset VFE module
574 * @vfe: VFE Device
575 *
576 * Return 0 on success or a negative error code otherwise
577 */
vfe_get(struct vfe_device * vfe)578 int vfe_get(struct vfe_device *vfe)
579 {
580 int ret;
581
582 mutex_lock(&vfe->power_lock);
583
584 if (vfe->power_count == 0) {
585 ret = vfe->ops->pm_domain_on(vfe);
586 if (ret < 0)
587 goto error_pm_domain;
588
589 ret = pm_runtime_resume_and_get(vfe->camss->dev);
590 if (ret < 0)
591 goto error_domain_off;
592
593 ret = vfe_set_clock_rates(vfe);
594 if (ret < 0)
595 goto error_pm_runtime_get;
596
597 ret = camss_enable_clocks(vfe->nclocks, vfe->clock,
598 vfe->camss->dev);
599 if (ret < 0)
600 goto error_pm_runtime_get;
601
602 ret = vfe_reset(vfe);
603 if (ret < 0)
604 goto error_reset;
605
606 vfe_reset_output_maps(vfe);
607
608 vfe_init_outputs(vfe);
609
610 vfe->ops->hw_version(vfe);
611 } else {
612 ret = vfe_check_clock_rates(vfe);
613 if (ret < 0)
614 goto error_pm_runtime_get;
615 }
616 vfe->power_count++;
617
618 mutex_unlock(&vfe->power_lock);
619
620 return 0;
621
622 error_reset:
623 camss_disable_clocks(vfe->nclocks, vfe->clock);
624
625 error_pm_runtime_get:
626 pm_runtime_put_sync(vfe->camss->dev);
627 error_domain_off:
628 vfe->ops->pm_domain_off(vfe);
629
630 error_pm_domain:
631 mutex_unlock(&vfe->power_lock);
632
633 return ret;
634 }
635
636 /*
637 * vfe_put - Power down VFE module
638 * @vfe: VFE Device
639 */
vfe_put(struct vfe_device * vfe)640 void vfe_put(struct vfe_device *vfe)
641 {
642 mutex_lock(&vfe->power_lock);
643
644 if (vfe->power_count == 0) {
645 dev_err(vfe->camss->dev, "vfe power off on power_count == 0\n");
646 goto exit;
647 } else if (vfe->power_count == 1) {
648 if (vfe->was_streaming) {
649 vfe->was_streaming = 0;
650 vfe->ops->vfe_halt(vfe);
651 }
652 camss_disable_clocks(vfe->nclocks, vfe->clock);
653 pm_runtime_put_sync(vfe->camss->dev);
654 vfe->ops->pm_domain_off(vfe);
655 }
656
657 vfe->power_count--;
658
659 exit:
660 mutex_unlock(&vfe->power_lock);
661 }
662
663 /*
664 * vfe_flush_buffers - Return all vb2 buffers
665 * @vid: Video device structure
666 * @state: vb2 buffer state of the returned buffers
667 *
668 * Return all buffers to vb2. This includes queued pending buffers (still
669 * unused) and any buffers given to the hardware but again still not used.
670 *
671 * Return 0 on success or a negative error code otherwise
672 */
vfe_flush_buffers(struct camss_video * vid,enum vb2_buffer_state state)673 int vfe_flush_buffers(struct camss_video *vid,
674 enum vb2_buffer_state state)
675 {
676 struct vfe_line *line = container_of(vid, struct vfe_line, video_out);
677 struct vfe_device *vfe = to_vfe(line);
678 struct vfe_output *output;
679 unsigned long flags;
680
681 output = &line->output;
682
683 spin_lock_irqsave(&vfe->output_lock, flags);
684
685 vfe_buf_flush_pending(output, state);
686
687 if (output->buf[0])
688 vb2_buffer_done(&output->buf[0]->vb.vb2_buf, state);
689
690 if (output->buf[1])
691 vb2_buffer_done(&output->buf[1]->vb.vb2_buf, state);
692
693 if (output->last_buffer) {
694 vb2_buffer_done(&output->last_buffer->vb.vb2_buf, state);
695 output->last_buffer = NULL;
696 }
697
698 spin_unlock_irqrestore(&vfe->output_lock, flags);
699
700 return 0;
701 }
702
703 /*
704 * vfe_set_power - Power on/off VFE module
705 * @sd: VFE V4L2 subdevice
706 * @on: Requested power state
707 *
708 * Return 0 on success or a negative error code otherwise
709 */
vfe_set_power(struct v4l2_subdev * sd,int on)710 static int vfe_set_power(struct v4l2_subdev *sd, int on)
711 {
712 struct vfe_line *line = v4l2_get_subdevdata(sd);
713 struct vfe_device *vfe = to_vfe(line);
714 int ret;
715
716 if (on) {
717 ret = vfe_get(vfe);
718 if (ret < 0)
719 return ret;
720 } else {
721 vfe_put(vfe);
722 }
723
724 return 0;
725 }
726
727 /*
728 * vfe_set_stream - Enable/disable streaming on VFE module
729 * @sd: VFE V4L2 subdevice
730 * @enable: Requested streaming state
731 *
732 * Main configuration of VFE module is triggered here.
733 *
734 * Return 0 on success or a negative error code otherwise
735 */
vfe_set_stream(struct v4l2_subdev * sd,int enable)736 static int vfe_set_stream(struct v4l2_subdev *sd, int enable)
737 {
738 struct vfe_line *line = v4l2_get_subdevdata(sd);
739 struct vfe_device *vfe = to_vfe(line);
740 int ret;
741
742 if (enable) {
743 line->output.state = VFE_OUTPUT_RESERVED;
744 ret = vfe->ops->vfe_enable(line);
745 if (ret < 0)
746 dev_err(vfe->camss->dev,
747 "Failed to enable vfe outputs\n");
748 } else {
749 ret = vfe->ops->vfe_disable(line);
750 if (ret < 0)
751 dev_err(vfe->camss->dev,
752 "Failed to disable vfe outputs\n");
753 }
754
755 return ret;
756 }
757
758 /*
759 * __vfe_get_format - Get pointer to format structure
760 * @line: VFE line
761 * @cfg: V4L2 subdev pad configuration
762 * @pad: pad from which format is requested
763 * @which: TRY or ACTIVE format
764 *
765 * Return pointer to TRY or ACTIVE format structure
766 */
767 static struct v4l2_mbus_framefmt *
__vfe_get_format(struct vfe_line * line,struct v4l2_subdev_state * sd_state,unsigned int pad,enum v4l2_subdev_format_whence which)768 __vfe_get_format(struct vfe_line *line,
769 struct v4l2_subdev_state *sd_state,
770 unsigned int pad,
771 enum v4l2_subdev_format_whence which)
772 {
773 if (which == V4L2_SUBDEV_FORMAT_TRY)
774 return v4l2_subdev_get_try_format(&line->subdev, sd_state,
775 pad);
776
777 return &line->fmt[pad];
778 }
779
780 /*
781 * __vfe_get_compose - Get pointer to compose selection structure
782 * @line: VFE line
783 * @cfg: V4L2 subdev pad configuration
784 * @which: TRY or ACTIVE format
785 *
786 * Return pointer to TRY or ACTIVE compose rectangle structure
787 */
788 static struct v4l2_rect *
__vfe_get_compose(struct vfe_line * line,struct v4l2_subdev_state * sd_state,enum v4l2_subdev_format_whence which)789 __vfe_get_compose(struct vfe_line *line,
790 struct v4l2_subdev_state *sd_state,
791 enum v4l2_subdev_format_whence which)
792 {
793 if (which == V4L2_SUBDEV_FORMAT_TRY)
794 return v4l2_subdev_get_try_compose(&line->subdev, sd_state,
795 MSM_VFE_PAD_SINK);
796
797 return &line->compose;
798 }
799
800 /*
801 * __vfe_get_crop - Get pointer to crop selection structure
802 * @line: VFE line
803 * @cfg: V4L2 subdev pad configuration
804 * @which: TRY or ACTIVE format
805 *
806 * Return pointer to TRY or ACTIVE crop rectangle structure
807 */
808 static struct v4l2_rect *
__vfe_get_crop(struct vfe_line * line,struct v4l2_subdev_state * sd_state,enum v4l2_subdev_format_whence which)809 __vfe_get_crop(struct vfe_line *line,
810 struct v4l2_subdev_state *sd_state,
811 enum v4l2_subdev_format_whence which)
812 {
813 if (which == V4L2_SUBDEV_FORMAT_TRY)
814 return v4l2_subdev_get_try_crop(&line->subdev, sd_state,
815 MSM_VFE_PAD_SRC);
816
817 return &line->crop;
818 }
819
820 /*
821 * vfe_try_format - Handle try format by pad subdev method
822 * @line: VFE line
823 * @cfg: V4L2 subdev pad configuration
824 * @pad: pad on which format is requested
825 * @fmt: pointer to v4l2 format structure
826 * @which: wanted subdev format
827 */
vfe_try_format(struct vfe_line * line,struct v4l2_subdev_state * sd_state,unsigned int pad,struct v4l2_mbus_framefmt * fmt,enum v4l2_subdev_format_whence which)828 static void vfe_try_format(struct vfe_line *line,
829 struct v4l2_subdev_state *sd_state,
830 unsigned int pad,
831 struct v4l2_mbus_framefmt *fmt,
832 enum v4l2_subdev_format_whence which)
833 {
834 unsigned int i;
835 u32 code;
836
837 switch (pad) {
838 case MSM_VFE_PAD_SINK:
839 /* Set format on sink pad */
840
841 for (i = 0; i < line->nformats; i++)
842 if (fmt->code == line->formats[i].code)
843 break;
844
845 /* If not found, use UYVY as default */
846 if (i >= line->nformats)
847 fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
848
849 fmt->width = clamp_t(u32, fmt->width, 1, 8191);
850 fmt->height = clamp_t(u32, fmt->height, 1, 8191);
851
852 fmt->field = V4L2_FIELD_NONE;
853 fmt->colorspace = V4L2_COLORSPACE_SRGB;
854
855 break;
856
857 case MSM_VFE_PAD_SRC:
858 /* Set and return a format same as sink pad */
859 code = fmt->code;
860
861 *fmt = *__vfe_get_format(line, sd_state, MSM_VFE_PAD_SINK,
862 which);
863
864 fmt->code = vfe_src_pad_code(line, fmt->code, 0, code);
865
866 if (line->id == VFE_LINE_PIX) {
867 struct v4l2_rect *rect;
868
869 rect = __vfe_get_crop(line, sd_state, which);
870
871 fmt->width = rect->width;
872 fmt->height = rect->height;
873 }
874
875 break;
876 }
877
878 fmt->colorspace = V4L2_COLORSPACE_SRGB;
879 }
880
881 /*
882 * vfe_try_compose - Handle try compose selection by pad subdev method
883 * @line: VFE line
884 * @cfg: V4L2 subdev pad configuration
885 * @rect: pointer to v4l2 rect structure
886 * @which: wanted subdev format
887 */
vfe_try_compose(struct vfe_line * line,struct v4l2_subdev_state * sd_state,struct v4l2_rect * rect,enum v4l2_subdev_format_whence which)888 static void vfe_try_compose(struct vfe_line *line,
889 struct v4l2_subdev_state *sd_state,
890 struct v4l2_rect *rect,
891 enum v4l2_subdev_format_whence which)
892 {
893 struct v4l2_mbus_framefmt *fmt;
894
895 fmt = __vfe_get_format(line, sd_state, MSM_VFE_PAD_SINK, which);
896
897 if (rect->width > fmt->width)
898 rect->width = fmt->width;
899
900 if (rect->height > fmt->height)
901 rect->height = fmt->height;
902
903 if (fmt->width > rect->width * SCALER_RATIO_MAX)
904 rect->width = (fmt->width + SCALER_RATIO_MAX - 1) /
905 SCALER_RATIO_MAX;
906
907 rect->width &= ~0x1;
908
909 if (fmt->height > rect->height * SCALER_RATIO_MAX)
910 rect->height = (fmt->height + SCALER_RATIO_MAX - 1) /
911 SCALER_RATIO_MAX;
912
913 if (rect->width < 16)
914 rect->width = 16;
915
916 if (rect->height < 4)
917 rect->height = 4;
918 }
919
920 /*
921 * vfe_try_crop - Handle try crop selection by pad subdev method
922 * @line: VFE line
923 * @cfg: V4L2 subdev pad configuration
924 * @rect: pointer to v4l2 rect structure
925 * @which: wanted subdev format
926 */
vfe_try_crop(struct vfe_line * line,struct v4l2_subdev_state * sd_state,struct v4l2_rect * rect,enum v4l2_subdev_format_whence which)927 static void vfe_try_crop(struct vfe_line *line,
928 struct v4l2_subdev_state *sd_state,
929 struct v4l2_rect *rect,
930 enum v4l2_subdev_format_whence which)
931 {
932 struct v4l2_rect *compose;
933
934 compose = __vfe_get_compose(line, sd_state, which);
935
936 if (rect->width > compose->width)
937 rect->width = compose->width;
938
939 if (rect->width + rect->left > compose->width)
940 rect->left = compose->width - rect->width;
941
942 if (rect->height > compose->height)
943 rect->height = compose->height;
944
945 if (rect->height + rect->top > compose->height)
946 rect->top = compose->height - rect->height;
947
948 /* wm in line based mode writes multiple of 16 horizontally */
949 rect->left += (rect->width & 0xf) >> 1;
950 rect->width &= ~0xf;
951
952 if (rect->width < 16) {
953 rect->left = 0;
954 rect->width = 16;
955 }
956
957 if (rect->height < 4) {
958 rect->top = 0;
959 rect->height = 4;
960 }
961 }
962
963 /*
964 * vfe_enum_mbus_code - Handle pixel format enumeration
965 * @sd: VFE V4L2 subdevice
966 * @cfg: V4L2 subdev pad configuration
967 * @code: pointer to v4l2_subdev_mbus_code_enum structure
968 *
969 * return -EINVAL or zero on success
970 */
vfe_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)971 static int vfe_enum_mbus_code(struct v4l2_subdev *sd,
972 struct v4l2_subdev_state *sd_state,
973 struct v4l2_subdev_mbus_code_enum *code)
974 {
975 struct vfe_line *line = v4l2_get_subdevdata(sd);
976
977 if (code->pad == MSM_VFE_PAD_SINK) {
978 if (code->index >= line->nformats)
979 return -EINVAL;
980
981 code->code = line->formats[code->index].code;
982 } else {
983 struct v4l2_mbus_framefmt *sink_fmt;
984
985 sink_fmt = __vfe_get_format(line, sd_state, MSM_VFE_PAD_SINK,
986 code->which);
987
988 code->code = vfe_src_pad_code(line, sink_fmt->code,
989 code->index, 0);
990 if (!code->code)
991 return -EINVAL;
992 }
993
994 return 0;
995 }
996
997 /*
998 * vfe_enum_frame_size - Handle frame size enumeration
999 * @sd: VFE V4L2 subdevice
1000 * @cfg: V4L2 subdev pad configuration
1001 * @fse: pointer to v4l2_subdev_frame_size_enum structure
1002 *
1003 * Return -EINVAL or zero on success
1004 */
vfe_enum_frame_size(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_size_enum * fse)1005 static int vfe_enum_frame_size(struct v4l2_subdev *sd,
1006 struct v4l2_subdev_state *sd_state,
1007 struct v4l2_subdev_frame_size_enum *fse)
1008 {
1009 struct vfe_line *line = v4l2_get_subdevdata(sd);
1010 struct v4l2_mbus_framefmt format;
1011
1012 if (fse->index != 0)
1013 return -EINVAL;
1014
1015 format.code = fse->code;
1016 format.width = 1;
1017 format.height = 1;
1018 vfe_try_format(line, sd_state, fse->pad, &format, fse->which);
1019 fse->min_width = format.width;
1020 fse->min_height = format.height;
1021
1022 if (format.code != fse->code)
1023 return -EINVAL;
1024
1025 format.code = fse->code;
1026 format.width = -1;
1027 format.height = -1;
1028 vfe_try_format(line, sd_state, fse->pad, &format, fse->which);
1029 fse->max_width = format.width;
1030 fse->max_height = format.height;
1031
1032 return 0;
1033 }
1034
1035 /*
1036 * vfe_get_format - Handle get format by pads subdev method
1037 * @sd: VFE V4L2 subdevice
1038 * @cfg: V4L2 subdev pad configuration
1039 * @fmt: pointer to v4l2 subdev format structure
1040 *
1041 * Return -EINVAL or zero on success
1042 */
vfe_get_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1043 static int vfe_get_format(struct v4l2_subdev *sd,
1044 struct v4l2_subdev_state *sd_state,
1045 struct v4l2_subdev_format *fmt)
1046 {
1047 struct vfe_line *line = v4l2_get_subdevdata(sd);
1048 struct v4l2_mbus_framefmt *format;
1049
1050 format = __vfe_get_format(line, sd_state, fmt->pad, fmt->which);
1051 if (format == NULL)
1052 return -EINVAL;
1053
1054 fmt->format = *format;
1055
1056 return 0;
1057 }
1058
1059 static int vfe_set_selection(struct v4l2_subdev *sd,
1060 struct v4l2_subdev_state *sd_state,
1061 struct v4l2_subdev_selection *sel);
1062
1063 /*
1064 * vfe_set_format - Handle set format by pads subdev method
1065 * @sd: VFE V4L2 subdevice
1066 * @cfg: V4L2 subdev pad configuration
1067 * @fmt: pointer to v4l2 subdev format structure
1068 *
1069 * Return -EINVAL or zero on success
1070 */
vfe_set_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1071 static int vfe_set_format(struct v4l2_subdev *sd,
1072 struct v4l2_subdev_state *sd_state,
1073 struct v4l2_subdev_format *fmt)
1074 {
1075 struct vfe_line *line = v4l2_get_subdevdata(sd);
1076 struct v4l2_mbus_framefmt *format;
1077
1078 format = __vfe_get_format(line, sd_state, fmt->pad, fmt->which);
1079 if (format == NULL)
1080 return -EINVAL;
1081
1082 vfe_try_format(line, sd_state, fmt->pad, &fmt->format, fmt->which);
1083 *format = fmt->format;
1084
1085 if (fmt->pad == MSM_VFE_PAD_SINK) {
1086 struct v4l2_subdev_selection sel = { 0 };
1087 int ret;
1088
1089 /* Propagate the format from sink to source */
1090 format = __vfe_get_format(line, sd_state, MSM_VFE_PAD_SRC,
1091 fmt->which);
1092
1093 *format = fmt->format;
1094 vfe_try_format(line, sd_state, MSM_VFE_PAD_SRC, format,
1095 fmt->which);
1096
1097 if (line->id != VFE_LINE_PIX)
1098 return 0;
1099
1100 /* Reset sink pad compose selection */
1101 sel.which = fmt->which;
1102 sel.pad = MSM_VFE_PAD_SINK;
1103 sel.target = V4L2_SEL_TGT_COMPOSE;
1104 sel.r.width = fmt->format.width;
1105 sel.r.height = fmt->format.height;
1106 ret = vfe_set_selection(sd, sd_state, &sel);
1107 if (ret < 0)
1108 return ret;
1109 }
1110
1111 return 0;
1112 }
1113
1114 /*
1115 * vfe_get_selection - Handle get selection by pads subdev method
1116 * @sd: VFE V4L2 subdevice
1117 * @cfg: V4L2 subdev pad configuration
1118 * @sel: pointer to v4l2 subdev selection structure
1119 *
1120 * Return -EINVAL or zero on success
1121 */
vfe_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1122 static int vfe_get_selection(struct v4l2_subdev *sd,
1123 struct v4l2_subdev_state *sd_state,
1124 struct v4l2_subdev_selection *sel)
1125 {
1126 struct vfe_line *line = v4l2_get_subdevdata(sd);
1127 struct v4l2_subdev_format fmt = { 0 };
1128 struct v4l2_rect *rect;
1129 int ret;
1130
1131 if (line->id != VFE_LINE_PIX)
1132 return -EINVAL;
1133
1134 if (sel->pad == MSM_VFE_PAD_SINK)
1135 switch (sel->target) {
1136 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1137 fmt.pad = sel->pad;
1138 fmt.which = sel->which;
1139 ret = vfe_get_format(sd, sd_state, &fmt);
1140 if (ret < 0)
1141 return ret;
1142
1143 sel->r.left = 0;
1144 sel->r.top = 0;
1145 sel->r.width = fmt.format.width;
1146 sel->r.height = fmt.format.height;
1147 break;
1148 case V4L2_SEL_TGT_COMPOSE:
1149 rect = __vfe_get_compose(line, sd_state, sel->which);
1150 if (rect == NULL)
1151 return -EINVAL;
1152
1153 sel->r = *rect;
1154 break;
1155 default:
1156 return -EINVAL;
1157 }
1158 else if (sel->pad == MSM_VFE_PAD_SRC)
1159 switch (sel->target) {
1160 case V4L2_SEL_TGT_CROP_BOUNDS:
1161 rect = __vfe_get_compose(line, sd_state, sel->which);
1162 if (rect == NULL)
1163 return -EINVAL;
1164
1165 sel->r.left = rect->left;
1166 sel->r.top = rect->top;
1167 sel->r.width = rect->width;
1168 sel->r.height = rect->height;
1169 break;
1170 case V4L2_SEL_TGT_CROP:
1171 rect = __vfe_get_crop(line, sd_state, sel->which);
1172 if (rect == NULL)
1173 return -EINVAL;
1174
1175 sel->r = *rect;
1176 break;
1177 default:
1178 return -EINVAL;
1179 }
1180
1181 return 0;
1182 }
1183
1184 /*
1185 * vfe_set_selection - Handle set selection by pads subdev method
1186 * @sd: VFE V4L2 subdevice
1187 * @cfg: V4L2 subdev pad configuration
1188 * @sel: pointer to v4l2 subdev selection structure
1189 *
1190 * Return -EINVAL or zero on success
1191 */
vfe_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1192 static int vfe_set_selection(struct v4l2_subdev *sd,
1193 struct v4l2_subdev_state *sd_state,
1194 struct v4l2_subdev_selection *sel)
1195 {
1196 struct vfe_line *line = v4l2_get_subdevdata(sd);
1197 struct v4l2_rect *rect;
1198 int ret;
1199
1200 if (line->id != VFE_LINE_PIX)
1201 return -EINVAL;
1202
1203 if (sel->target == V4L2_SEL_TGT_COMPOSE &&
1204 sel->pad == MSM_VFE_PAD_SINK) {
1205 struct v4l2_subdev_selection crop = { 0 };
1206
1207 rect = __vfe_get_compose(line, sd_state, sel->which);
1208 if (rect == NULL)
1209 return -EINVAL;
1210
1211 vfe_try_compose(line, sd_state, &sel->r, sel->which);
1212 *rect = sel->r;
1213
1214 /* Reset source crop selection */
1215 crop.which = sel->which;
1216 crop.pad = MSM_VFE_PAD_SRC;
1217 crop.target = V4L2_SEL_TGT_CROP;
1218 crop.r = *rect;
1219 ret = vfe_set_selection(sd, sd_state, &crop);
1220 } else if (sel->target == V4L2_SEL_TGT_CROP &&
1221 sel->pad == MSM_VFE_PAD_SRC) {
1222 struct v4l2_subdev_format fmt = { 0 };
1223
1224 rect = __vfe_get_crop(line, sd_state, sel->which);
1225 if (rect == NULL)
1226 return -EINVAL;
1227
1228 vfe_try_crop(line, sd_state, &sel->r, sel->which);
1229 *rect = sel->r;
1230
1231 /* Reset source pad format width and height */
1232 fmt.which = sel->which;
1233 fmt.pad = MSM_VFE_PAD_SRC;
1234 ret = vfe_get_format(sd, sd_state, &fmt);
1235 if (ret < 0)
1236 return ret;
1237
1238 fmt.format.width = rect->width;
1239 fmt.format.height = rect->height;
1240 ret = vfe_set_format(sd, sd_state, &fmt);
1241 } else {
1242 ret = -EINVAL;
1243 }
1244
1245 return ret;
1246 }
1247
1248 /*
1249 * vfe_init_formats - Initialize formats on all pads
1250 * @sd: VFE V4L2 subdevice
1251 * @fh: V4L2 subdev file handle
1252 *
1253 * Initialize all pad formats with default values.
1254 *
1255 * Return 0 on success or a negative error code otherwise
1256 */
vfe_init_formats(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)1257 static int vfe_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1258 {
1259 struct v4l2_subdev_format format = {
1260 .pad = MSM_VFE_PAD_SINK,
1261 .which = fh ? V4L2_SUBDEV_FORMAT_TRY :
1262 V4L2_SUBDEV_FORMAT_ACTIVE,
1263 .format = {
1264 .code = MEDIA_BUS_FMT_UYVY8_2X8,
1265 .width = 1920,
1266 .height = 1080
1267 }
1268 };
1269
1270 return vfe_set_format(sd, fh ? fh->state : NULL, &format);
1271 }
1272
1273 /*
1274 * msm_vfe_subdev_init - Initialize VFE device structure and resources
1275 * @vfe: VFE device
1276 * @res: VFE module resources table
1277 *
1278 * Return 0 on success or a negative error code otherwise
1279 */
msm_vfe_subdev_init(struct camss * camss,struct vfe_device * vfe,const struct resources * res,u8 id)1280 int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
1281 const struct resources *res, u8 id)
1282 {
1283 struct device *dev = camss->dev;
1284 struct platform_device *pdev = to_platform_device(dev);
1285 int i, j;
1286 int ret;
1287
1288 switch (camss->version) {
1289 case CAMSS_8x16:
1290 vfe->ops = &vfe_ops_4_1;
1291 break;
1292 case CAMSS_8x96:
1293 vfe->ops = &vfe_ops_4_7;
1294 break;
1295 case CAMSS_660:
1296 vfe->ops = &vfe_ops_4_8;
1297 break;
1298 case CAMSS_845:
1299 vfe->ops = &vfe_ops_170;
1300 break;
1301 case CAMSS_8250:
1302 vfe->ops = &vfe_ops_480;
1303 break;
1304 default:
1305 return -EINVAL;
1306 }
1307 vfe->ops->subdev_init(dev, vfe);
1308
1309 /* Memory */
1310
1311 vfe->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]);
1312 if (IS_ERR(vfe->base)) {
1313 dev_err(dev, "could not map memory\n");
1314 return PTR_ERR(vfe->base);
1315 }
1316
1317 /* Interrupt */
1318
1319 ret = platform_get_irq_byname(pdev, res->interrupt[0]);
1320 if (ret < 0)
1321 return ret;
1322
1323 vfe->irq = ret;
1324 snprintf(vfe->irq_name, sizeof(vfe->irq_name), "%s_%s%d",
1325 dev_name(dev), MSM_VFE_NAME, id);
1326 ret = devm_request_irq(dev, vfe->irq, vfe->ops->isr,
1327 IRQF_TRIGGER_RISING, vfe->irq_name, vfe);
1328 if (ret < 0) {
1329 dev_err(dev, "request_irq failed: %d\n", ret);
1330 return ret;
1331 }
1332
1333 /* Clocks */
1334
1335 vfe->nclocks = 0;
1336 while (res->clock[vfe->nclocks])
1337 vfe->nclocks++;
1338
1339 vfe->clock = devm_kcalloc(dev, vfe->nclocks, sizeof(*vfe->clock),
1340 GFP_KERNEL);
1341 if (!vfe->clock)
1342 return -ENOMEM;
1343
1344 for (i = 0; i < vfe->nclocks; i++) {
1345 struct camss_clock *clock = &vfe->clock[i];
1346
1347 clock->clk = devm_clk_get(dev, res->clock[i]);
1348 if (IS_ERR(clock->clk))
1349 return PTR_ERR(clock->clk);
1350
1351 clock->name = res->clock[i];
1352
1353 clock->nfreqs = 0;
1354 while (res->clock_rate[i][clock->nfreqs])
1355 clock->nfreqs++;
1356
1357 if (!clock->nfreqs) {
1358 clock->freq = NULL;
1359 continue;
1360 }
1361
1362 clock->freq = devm_kcalloc(dev,
1363 clock->nfreqs,
1364 sizeof(*clock->freq),
1365 GFP_KERNEL);
1366 if (!clock->freq)
1367 return -ENOMEM;
1368
1369 for (j = 0; j < clock->nfreqs; j++)
1370 clock->freq[j] = res->clock_rate[i][j];
1371 }
1372
1373 mutex_init(&vfe->power_lock);
1374 vfe->power_count = 0;
1375
1376 mutex_init(&vfe->stream_lock);
1377 vfe->stream_count = 0;
1378
1379 spin_lock_init(&vfe->output_lock);
1380
1381 vfe->camss = camss;
1382 vfe->id = id;
1383 vfe->reg_update = 0;
1384
1385 for (i = VFE_LINE_RDI0; i < vfe->line_num; i++) {
1386 struct vfe_line *l = &vfe->line[i];
1387
1388 l->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1389 l->video_out.camss = camss;
1390 l->id = i;
1391 init_completion(&l->output.sof);
1392 init_completion(&l->output.reg_update);
1393
1394 if (camss->version == CAMSS_8x16) {
1395 if (i == VFE_LINE_PIX) {
1396 l->formats = formats_pix_8x16;
1397 l->nformats = ARRAY_SIZE(formats_pix_8x16);
1398 } else {
1399 l->formats = formats_rdi_8x16;
1400 l->nformats = ARRAY_SIZE(formats_rdi_8x16);
1401 }
1402 } else if (camss->version == CAMSS_8x96 ||
1403 camss->version == CAMSS_660) {
1404 if (i == VFE_LINE_PIX) {
1405 l->formats = formats_pix_8x96;
1406 l->nformats = ARRAY_SIZE(formats_pix_8x96);
1407 } else {
1408 l->formats = formats_rdi_8x96;
1409 l->nformats = ARRAY_SIZE(formats_rdi_8x96);
1410 }
1411 } else if (camss->version == CAMSS_845 ||
1412 camss->version == CAMSS_8250) {
1413 l->formats = formats_rdi_845;
1414 l->nformats = ARRAY_SIZE(formats_rdi_845);
1415 } else {
1416 return -EINVAL;
1417 }
1418 }
1419
1420 init_completion(&vfe->reset_complete);
1421 init_completion(&vfe->halt_complete);
1422
1423 return 0;
1424 }
1425
1426 /*
1427 * vfe_link_setup - Setup VFE connections
1428 * @entity: Pointer to media entity structure
1429 * @local: Pointer to local pad
1430 * @remote: Pointer to remote pad
1431 * @flags: Link flags
1432 *
1433 * Return 0 on success
1434 */
vfe_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)1435 static int vfe_link_setup(struct media_entity *entity,
1436 const struct media_pad *local,
1437 const struct media_pad *remote, u32 flags)
1438 {
1439 if (flags & MEDIA_LNK_FL_ENABLED)
1440 if (media_pad_remote_pad_first(local))
1441 return -EBUSY;
1442
1443 return 0;
1444 }
1445
1446 static const struct v4l2_subdev_core_ops vfe_core_ops = {
1447 .s_power = vfe_set_power,
1448 };
1449
1450 static const struct v4l2_subdev_video_ops vfe_video_ops = {
1451 .s_stream = vfe_set_stream,
1452 };
1453
1454 static const struct v4l2_subdev_pad_ops vfe_pad_ops = {
1455 .enum_mbus_code = vfe_enum_mbus_code,
1456 .enum_frame_size = vfe_enum_frame_size,
1457 .get_fmt = vfe_get_format,
1458 .set_fmt = vfe_set_format,
1459 .get_selection = vfe_get_selection,
1460 .set_selection = vfe_set_selection,
1461 };
1462
1463 static const struct v4l2_subdev_ops vfe_v4l2_ops = {
1464 .core = &vfe_core_ops,
1465 .video = &vfe_video_ops,
1466 .pad = &vfe_pad_ops,
1467 };
1468
1469 static const struct v4l2_subdev_internal_ops vfe_v4l2_internal_ops = {
1470 .open = vfe_init_formats,
1471 };
1472
1473 static const struct media_entity_operations vfe_media_ops = {
1474 .link_setup = vfe_link_setup,
1475 .link_validate = v4l2_subdev_link_validate,
1476 };
1477
1478 /*
1479 * msm_vfe_register_entities - Register subdev node for VFE module
1480 * @vfe: VFE device
1481 * @v4l2_dev: V4L2 device
1482 *
1483 * Initialize and register a subdev node for the VFE module. Then
1484 * call msm_video_register() to register the video device node which
1485 * will be connected to this subdev node. Then actually create the
1486 * media link between them.
1487 *
1488 * Return 0 on success or a negative error code otherwise
1489 */
msm_vfe_register_entities(struct vfe_device * vfe,struct v4l2_device * v4l2_dev)1490 int msm_vfe_register_entities(struct vfe_device *vfe,
1491 struct v4l2_device *v4l2_dev)
1492 {
1493 struct device *dev = vfe->camss->dev;
1494 struct v4l2_subdev *sd;
1495 struct media_pad *pads;
1496 struct camss_video *video_out;
1497 int ret;
1498 int i;
1499
1500 for (i = 0; i < vfe->line_num; i++) {
1501 char name[32];
1502
1503 sd = &vfe->line[i].subdev;
1504 pads = vfe->line[i].pads;
1505 video_out = &vfe->line[i].video_out;
1506
1507 v4l2_subdev_init(sd, &vfe_v4l2_ops);
1508 sd->internal_ops = &vfe_v4l2_internal_ops;
1509 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1510 if (i == VFE_LINE_PIX)
1511 snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d_%s",
1512 MSM_VFE_NAME, vfe->id, "pix");
1513 else
1514 snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d_%s%d",
1515 MSM_VFE_NAME, vfe->id, "rdi", i);
1516
1517 v4l2_set_subdevdata(sd, &vfe->line[i]);
1518
1519 ret = vfe_init_formats(sd, NULL);
1520 if (ret < 0) {
1521 dev_err(dev, "Failed to init format: %d\n", ret);
1522 goto error_init;
1523 }
1524
1525 pads[MSM_VFE_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1526 pads[MSM_VFE_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE;
1527
1528 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
1529 sd->entity.ops = &vfe_media_ops;
1530 ret = media_entity_pads_init(&sd->entity, MSM_VFE_PADS_NUM,
1531 pads);
1532 if (ret < 0) {
1533 dev_err(dev, "Failed to init media entity: %d\n", ret);
1534 goto error_init;
1535 }
1536
1537 ret = v4l2_device_register_subdev(v4l2_dev, sd);
1538 if (ret < 0) {
1539 dev_err(dev, "Failed to register subdev: %d\n", ret);
1540 goto error_reg_subdev;
1541 }
1542
1543 video_out->ops = &vfe->video_ops;
1544 if (vfe->camss->version == CAMSS_845 ||
1545 vfe->camss->version == CAMSS_8250)
1546 video_out->bpl_alignment = 16;
1547 else
1548 video_out->bpl_alignment = 8;
1549 video_out->line_based = 0;
1550 if (i == VFE_LINE_PIX) {
1551 video_out->bpl_alignment = 16;
1552 video_out->line_based = 1;
1553 }
1554 snprintf(name, ARRAY_SIZE(name), "%s%d_%s%d",
1555 MSM_VFE_NAME, vfe->id, "video", i);
1556 ret = msm_video_register(video_out, v4l2_dev, name,
1557 i == VFE_LINE_PIX ? 1 : 0);
1558 if (ret < 0) {
1559 dev_err(dev, "Failed to register video node: %d\n",
1560 ret);
1561 goto error_reg_video;
1562 }
1563
1564 ret = media_create_pad_link(
1565 &sd->entity, MSM_VFE_PAD_SRC,
1566 &video_out->vdev.entity, 0,
1567 MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
1568 if (ret < 0) {
1569 dev_err(dev, "Failed to link %s->%s entities: %d\n",
1570 sd->entity.name, video_out->vdev.entity.name,
1571 ret);
1572 goto error_link;
1573 }
1574 }
1575
1576 return 0;
1577
1578 error_link:
1579 msm_video_unregister(video_out);
1580
1581 error_reg_video:
1582 v4l2_device_unregister_subdev(sd);
1583
1584 error_reg_subdev:
1585 media_entity_cleanup(&sd->entity);
1586
1587 error_init:
1588 for (i--; i >= 0; i--) {
1589 sd = &vfe->line[i].subdev;
1590 video_out = &vfe->line[i].video_out;
1591
1592 msm_video_unregister(video_out);
1593 v4l2_device_unregister_subdev(sd);
1594 media_entity_cleanup(&sd->entity);
1595 }
1596
1597 return ret;
1598 }
1599
1600 /*
1601 * msm_vfe_unregister_entities - Unregister VFE module subdev node
1602 * @vfe: VFE device
1603 */
msm_vfe_unregister_entities(struct vfe_device * vfe)1604 void msm_vfe_unregister_entities(struct vfe_device *vfe)
1605 {
1606 int i;
1607
1608 mutex_destroy(&vfe->power_lock);
1609 mutex_destroy(&vfe->stream_lock);
1610
1611 for (i = 0; i < vfe->line_num; i++) {
1612 struct v4l2_subdev *sd = &vfe->line[i].subdev;
1613 struct camss_video *video_out = &vfe->line[i].video_out;
1614
1615 msm_video_unregister(video_out);
1616 v4l2_device_unregister_subdev(sd);
1617 media_entity_cleanup(&sd->entity);
1618 }
1619 }
1620
