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[dev->input] & 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[dev->input] & 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[dev->input]))
97 vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
98 }
99
100
vivid_sliced_vbi_cap_process(struct vivid_dev * dev,struct vivid_buffer * buf)101 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
102 struct vivid_buffer *buf)
103 {
104 struct v4l2_sliced_vbi_data *vbuf =
105 vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
106
107 buf->vb.sequence = dev->vbi_cap_seq_count;
108 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
109 buf->vb.sequence /= 2;
110
111 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
112
113 memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0));
114 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
115 unsigned i;
116
117 for (i = 0; i < 25; i++)
118 vbuf[i] = dev->vbi_gen.data[i];
119 }
120 }
121
vbi_cap_queue_setup(struct vb2_queue * vq,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],struct device * alloc_devs[])122 static int vbi_cap_queue_setup(struct vb2_queue *vq,
123 unsigned *nbuffers, unsigned *nplanes,
124 unsigned sizes[], struct device *alloc_devs[])
125 {
126 struct vivid_dev *dev = vb2_get_drv_priv(vq);
127 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
128 unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
129 36 * sizeof(struct v4l2_sliced_vbi_data) :
130 1440 * 2 * (is_60hz ? 12 : 18);
131
132 if (!vivid_is_sdtv_cap(dev))
133 return -EINVAL;
134
135 sizes[0] = size;
136
137 if (vq->num_buffers + *nbuffers < 2)
138 *nbuffers = 2 - vq->num_buffers;
139
140 *nplanes = 1;
141 return 0;
142 }
143
vbi_cap_buf_prepare(struct vb2_buffer * vb)144 static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
145 {
146 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
147 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
148 unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
149 36 * sizeof(struct v4l2_sliced_vbi_data) :
150 1440 * 2 * (is_60hz ? 12 : 18);
151
152 dprintk(dev, 1, "%s\n", __func__);
153
154 if (dev->buf_prepare_error) {
155 /*
156 * Error injection: test what happens if buf_prepare() returns
157 * an error.
158 */
159 dev->buf_prepare_error = false;
160 return -EINVAL;
161 }
162 if (vb2_plane_size(vb, 0) < size) {
163 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
164 __func__, vb2_plane_size(vb, 0), size);
165 return -EINVAL;
166 }
167 vb2_set_plane_payload(vb, 0, size);
168
169 return 0;
170 }
171
vbi_cap_buf_queue(struct vb2_buffer * vb)172 static void vbi_cap_buf_queue(struct vb2_buffer *vb)
173 {
174 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
175 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
176 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
177
178 dprintk(dev, 1, "%s\n", __func__);
179
180 spin_lock(&dev->slock);
181 list_add_tail(&buf->list, &dev->vbi_cap_active);
182 spin_unlock(&dev->slock);
183 }
184
vbi_cap_start_streaming(struct vb2_queue * vq,unsigned count)185 static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
186 {
187 struct vivid_dev *dev = vb2_get_drv_priv(vq);
188 int err;
189
190 dprintk(dev, 1, "%s\n", __func__);
191 dev->vbi_cap_seq_count = 0;
192 if (dev->start_streaming_error) {
193 dev->start_streaming_error = false;
194 err = -EINVAL;
195 } else {
196 err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
197 }
198 if (err) {
199 struct vivid_buffer *buf, *tmp;
200
201 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
202 list_del(&buf->list);
203 vb2_buffer_done(&buf->vb.vb2_buf,
204 VB2_BUF_STATE_QUEUED);
205 }
206 }
207 return err;
208 }
209
210 /* abort streaming and wait for last buffer */
vbi_cap_stop_streaming(struct vb2_queue * vq)211 static void vbi_cap_stop_streaming(struct vb2_queue *vq)
212 {
213 struct vivid_dev *dev = vb2_get_drv_priv(vq);
214
215 dprintk(dev, 1, "%s\n", __func__);
216 vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
217 }
218
vbi_cap_buf_request_complete(struct vb2_buffer * vb)219 static void vbi_cap_buf_request_complete(struct vb2_buffer *vb)
220 {
221 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
222
223 v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vbi_cap);
224 }
225
226 const struct vb2_ops vivid_vbi_cap_qops = {
227 .queue_setup = vbi_cap_queue_setup,
228 .buf_prepare = vbi_cap_buf_prepare,
229 .buf_queue = vbi_cap_buf_queue,
230 .start_streaming = vbi_cap_start_streaming,
231 .stop_streaming = vbi_cap_stop_streaming,
232 .buf_request_complete = vbi_cap_buf_request_complete,
233 .wait_prepare = vb2_ops_wait_prepare,
234 .wait_finish = vb2_ops_wait_finish,
235 };
236
vidioc_g_fmt_vbi_cap(struct file * file,void * priv,struct v4l2_format * f)237 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
238 struct v4l2_format *f)
239 {
240 struct vivid_dev *dev = video_drvdata(file);
241 struct v4l2_vbi_format *vbi = &f->fmt.vbi;
242
243 if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
244 return -EINVAL;
245
246 vivid_g_fmt_vbi_cap(dev, vbi);
247 return 0;
248 }
249
vidioc_s_fmt_vbi_cap(struct file * file,void * priv,struct v4l2_format * f)250 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
251 struct v4l2_format *f)
252 {
253 struct vivid_dev *dev = video_drvdata(file);
254 int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
255
256 if (ret)
257 return ret;
258 if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
259 return -EBUSY;
260 dev->stream_sliced_vbi_cap = false;
261 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
262 return 0;
263 }
264
vivid_fill_service_lines(struct v4l2_sliced_vbi_format * vbi,u32 service_set)265 void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
266 {
267 vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
268 vbi->service_set = service_set;
269 memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
270 memset(vbi->reserved, 0, sizeof(vbi->reserved));
271
272 if (vbi->service_set == 0)
273 return;
274
275 if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
276 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
277 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
278 }
279 if (vbi->service_set & V4L2_SLICED_WSS_625) {
280 unsigned i;
281
282 for (i = 7; i <= 18; i++)
283 vbi->service_lines[0][i] =
284 vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
285 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
286 }
287 }
288
vidioc_g_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)289 int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
290 {
291 struct vivid_dev *dev = video_drvdata(file);
292 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
293
294 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
295 return -EINVAL;
296
297 vivid_fill_service_lines(vbi, dev->service_set_cap);
298 return 0;
299 }
300
vidioc_try_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)301 int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
302 {
303 struct vivid_dev *dev = video_drvdata(file);
304 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
305 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
306 u32 service_set = vbi->service_set;
307
308 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
309 return -EINVAL;
310
311 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
312 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
313 vivid_fill_service_lines(vbi, service_set);
314 return 0;
315 }
316
vidioc_s_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)317 int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
318 {
319 struct vivid_dev *dev = video_drvdata(file);
320 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
321 int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
322
323 if (ret)
324 return ret;
325 if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
326 return -EBUSY;
327 dev->service_set_cap = vbi->service_set;
328 dev->stream_sliced_vbi_cap = true;
329 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
330 return 0;
331 }
332
vidioc_g_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_sliced_vbi_cap * cap)333 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
334 {
335 struct vivid_dev *dev = video_drvdata(file);
336 struct video_device *vdev = video_devdata(file);
337 bool is_60hz;
338
339 if (vdev->vfl_dir == VFL_DIR_RX) {
340 is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
341 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
342 cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
343 return -EINVAL;
344 } else {
345 is_60hz = dev->std_out & V4L2_STD_525_60;
346 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
347 cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
348 return -EINVAL;
349 }
350
351 cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
352 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
353 if (is_60hz) {
354 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
355 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
356 } else {
357 unsigned i;
358
359 for (i = 7; i <= 18; i++)
360 cap->service_lines[0][i] =
361 cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
362 cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
363 }
364 return 0;
365 }
366
