1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * vivid-vbi-cap.c - vbi capture support functions.
4 *
5 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
6 */
7
8 #include <linux/errno.h>
9 #include <linux/kernel.h>
10 #include <linux/videodev2.h>
11 #include <media/v4l2-common.h>
12
13 #include "vivid-core.h"
14 #include "vivid-kthread-cap.h"
15 #include "vivid-vbi-cap.h"
16 #include "vivid-vbi-gen.h"
17
vivid_sliced_vbi_cap_fill(struct vivid_dev * dev,unsigned seqnr)18 static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr)
19 {
20 struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen;
21 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
22
23 vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr);
24
25 if (!is_60hz) {
26 if (dev->loop_video) {
27 if (dev->vbi_out_have_wss) {
28 vbi_gen->data[12].data[0] = dev->vbi_out_wss[0];
29 vbi_gen->data[12].data[1] = dev->vbi_out_wss[1];
30 } else {
31 vbi_gen->data[12].id = 0;
32 }
33 } else {
34 switch (tpg_g_video_aspect(&dev->tpg)) {
35 case TPG_VIDEO_ASPECT_14X9_CENTRE:
36 vbi_gen->data[12].data[0] = 0x01;
37 break;
38 case TPG_VIDEO_ASPECT_16X9_CENTRE:
39 vbi_gen->data[12].data[0] = 0x0b;
40 break;
41 case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC:
42 vbi_gen->data[12].data[0] = 0x07;
43 break;
44 case TPG_VIDEO_ASPECT_4X3:
45 default:
46 vbi_gen->data[12].data[0] = 0x08;
47 break;
48 }
49 }
50 } else if (dev->loop_video && is_60hz) {
51 if (dev->vbi_out_have_cc[0]) {
52 vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0];
53 vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1];
54 } else {
55 vbi_gen->data[0].id = 0;
56 }
57 if (dev->vbi_out_have_cc[1]) {
58 vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0];
59 vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1];
60 } else {
61 vbi_gen->data[1].id = 0;
62 }
63 }
64 }
65
vivid_g_fmt_vbi_cap(struct vivid_dev * dev,struct v4l2_vbi_format * vbi)66 static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi)
67 {
68 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
69
70 vbi->sampling_rate = 27000000;
71 vbi->offset = 24;
72 vbi->samples_per_line = 1440;
73 vbi->sample_format = V4L2_PIX_FMT_GREY;
74 vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5;
75 vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5;
76 vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18;
77 vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0;
78 vbi->reserved[0] = 0;
79 vbi->reserved[1] = 0;
80 }
81
vivid_raw_vbi_cap_process(struct vivid_dev * dev,struct vivid_buffer * buf)82 void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
83 {
84 struct v4l2_vbi_format vbi;
85 u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
86
87 vivid_g_fmt_vbi_cap(dev, &vbi);
88 buf->vb.sequence = dev->vbi_cap_seq_count;
89 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
90 buf->vb.sequence /= 2;
91
92 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
93
94 memset(vbuf, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0));
95
96 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode))
97 vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
98
99 buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset;
100 }
101
102
vivid_sliced_vbi_cap_process(struct vivid_dev * dev,struct vivid_buffer * buf)103 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
104 struct vivid_buffer *buf)
105 {
106 struct v4l2_sliced_vbi_data *vbuf =
107 vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
108
109 buf->vb.sequence = dev->vbi_cap_seq_count;
110 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
111 buf->vb.sequence /= 2;
112
113 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
114
115 memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0));
116 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
117 unsigned i;
118
119 for (i = 0; i < 25; i++)
120 vbuf[i] = dev->vbi_gen.data[i];
121 }
122
123 buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset;
124 }
125
vbi_cap_queue_setup(struct vb2_queue * vq,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],struct device * alloc_devs[])126 static int vbi_cap_queue_setup(struct vb2_queue *vq,
127 unsigned *nbuffers, unsigned *nplanes,
128 unsigned sizes[], struct device *alloc_devs[])
129 {
130 struct vivid_dev *dev = vb2_get_drv_priv(vq);
131 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
132 unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
133 36 * sizeof(struct v4l2_sliced_vbi_data) :
134 1440 * 2 * (is_60hz ? 12 : 18);
135
136 if (!vivid_is_sdtv_cap(dev))
137 return -EINVAL;
138
139 sizes[0] = size;
140
141 if (vq->num_buffers + *nbuffers < 2)
142 *nbuffers = 2 - vq->num_buffers;
143
144 *nplanes = 1;
145 return 0;
146 }
147
vbi_cap_buf_prepare(struct vb2_buffer * vb)148 static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
149 {
150 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
151 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
152 unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
153 36 * sizeof(struct v4l2_sliced_vbi_data) :
154 1440 * 2 * (is_60hz ? 12 : 18);
155
156 dprintk(dev, 1, "%s\n", __func__);
157
158 if (dev->buf_prepare_error) {
159 /*
160 * Error injection: test what happens if buf_prepare() returns
161 * an error.
162 */
163 dev->buf_prepare_error = false;
164 return -EINVAL;
165 }
166 if (vb2_plane_size(vb, 0) < size) {
167 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
168 __func__, vb2_plane_size(vb, 0), size);
169 return -EINVAL;
170 }
171 vb2_set_plane_payload(vb, 0, size);
172
173 return 0;
174 }
175
vbi_cap_buf_queue(struct vb2_buffer * vb)176 static void vbi_cap_buf_queue(struct vb2_buffer *vb)
177 {
178 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
179 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
180 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
181
182 dprintk(dev, 1, "%s\n", __func__);
183
184 spin_lock(&dev->slock);
185 list_add_tail(&buf->list, &dev->vbi_cap_active);
186 spin_unlock(&dev->slock);
187 }
188
vbi_cap_start_streaming(struct vb2_queue * vq,unsigned count)189 static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
190 {
191 struct vivid_dev *dev = vb2_get_drv_priv(vq);
192 int err;
193
194 dprintk(dev, 1, "%s\n", __func__);
195 dev->vbi_cap_seq_count = 0;
196 if (dev->start_streaming_error) {
197 dev->start_streaming_error = false;
198 err = -EINVAL;
199 } else {
200 err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
201 }
202 if (err) {
203 struct vivid_buffer *buf, *tmp;
204
205 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
206 list_del(&buf->list);
207 vb2_buffer_done(&buf->vb.vb2_buf,
208 VB2_BUF_STATE_QUEUED);
209 }
210 }
211 return err;
212 }
213
214 /* abort streaming and wait for last buffer */
vbi_cap_stop_streaming(struct vb2_queue * vq)215 static void vbi_cap_stop_streaming(struct vb2_queue *vq)
216 {
217 struct vivid_dev *dev = vb2_get_drv_priv(vq);
218
219 dprintk(dev, 1, "%s\n", __func__);
220 vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
221 }
222
223 const struct vb2_ops vivid_vbi_cap_qops = {
224 .queue_setup = vbi_cap_queue_setup,
225 .buf_prepare = vbi_cap_buf_prepare,
226 .buf_queue = vbi_cap_buf_queue,
227 .start_streaming = vbi_cap_start_streaming,
228 .stop_streaming = vbi_cap_stop_streaming,
229 .wait_prepare = vb2_ops_wait_prepare,
230 .wait_finish = vb2_ops_wait_finish,
231 };
232
vidioc_g_fmt_vbi_cap(struct file * file,void * priv,struct v4l2_format * f)233 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
234 struct v4l2_format *f)
235 {
236 struct vivid_dev *dev = video_drvdata(file);
237 struct v4l2_vbi_format *vbi = &f->fmt.vbi;
238
239 if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
240 return -EINVAL;
241
242 vivid_g_fmt_vbi_cap(dev, vbi);
243 return 0;
244 }
245
vidioc_s_fmt_vbi_cap(struct file * file,void * priv,struct v4l2_format * f)246 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
247 struct v4l2_format *f)
248 {
249 struct vivid_dev *dev = video_drvdata(file);
250 int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
251
252 if (ret)
253 return ret;
254 if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
255 return -EBUSY;
256 dev->stream_sliced_vbi_cap = false;
257 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
258 return 0;
259 }
260
vivid_fill_service_lines(struct v4l2_sliced_vbi_format * vbi,u32 service_set)261 void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
262 {
263 vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
264 vbi->service_set = service_set;
265 memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
266 memset(vbi->reserved, 0, sizeof(vbi->reserved));
267
268 if (vbi->service_set == 0)
269 return;
270
271 if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
272 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
273 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
274 }
275 if (vbi->service_set & V4L2_SLICED_WSS_625) {
276 unsigned i;
277
278 for (i = 7; i <= 18; i++)
279 vbi->service_lines[0][i] =
280 vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
281 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
282 }
283 }
284
vidioc_g_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)285 int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
286 {
287 struct vivid_dev *dev = video_drvdata(file);
288 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
289
290 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
291 return -EINVAL;
292
293 vivid_fill_service_lines(vbi, dev->service_set_cap);
294 return 0;
295 }
296
vidioc_try_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)297 int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
298 {
299 struct vivid_dev *dev = video_drvdata(file);
300 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
301 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
302 u32 service_set = vbi->service_set;
303
304 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
305 return -EINVAL;
306
307 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
308 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
309 vivid_fill_service_lines(vbi, service_set);
310 return 0;
311 }
312
vidioc_s_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)313 int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
314 {
315 struct vivid_dev *dev = video_drvdata(file);
316 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
317 int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
318
319 if (ret)
320 return ret;
321 if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
322 return -EBUSY;
323 dev->service_set_cap = vbi->service_set;
324 dev->stream_sliced_vbi_cap = true;
325 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
326 return 0;
327 }
328
vidioc_g_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_sliced_vbi_cap * cap)329 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
330 {
331 struct vivid_dev *dev = video_drvdata(file);
332 struct video_device *vdev = video_devdata(file);
333 bool is_60hz;
334
335 if (vdev->vfl_dir == VFL_DIR_RX) {
336 is_60hz = dev->std_cap & V4L2_STD_525_60;
337 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
338 cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
339 return -EINVAL;
340 } else {
341 is_60hz = dev->std_out & V4L2_STD_525_60;
342 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
343 cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
344 return -EINVAL;
345 }
346
347 cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
348 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
349 if (is_60hz) {
350 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
351 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
352 } else {
353 unsigned i;
354
355 for (i = 7; i <= 18; i++)
356 cap->service_lines[0][i] =
357 cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
358 cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
359 }
360 return 0;
361 }
362
