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
18static 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: 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(tpg: &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
66static 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
82void 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(vb: &buf->vb.vb2_buf, plane_no: 0);
86
87 vivid_g_fmt_vbi_cap(dev, vbi: &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, seqnr: 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(vbi: &dev->vbi_gen, vbi_fmt: &vbi, buf: vbuf);
98}
99
100
101void 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(vb: &buf->vb.vb2_buf, plane_no: 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, seqnr: 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
122static 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(q: 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 *nplanes = 1;
138 return 0;
139}
140
141static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
142{
143 struct vivid_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue);
144 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
145 unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
146 36 * sizeof(struct v4l2_sliced_vbi_data) :
147 1440 * 2 * (is_60hz ? 12 : 18);
148
149 dprintk(dev, 1, "%s\n", __func__);
150
151 if (dev->buf_prepare_error) {
152 /*
153 * Error injection: test what happens if buf_prepare() returns
154 * an error.
155 */
156 dev->buf_prepare_error = false;
157 return -EINVAL;
158 }
159 if (vb2_plane_size(vb, plane_no: 0) < size) {
160 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
161 __func__, vb2_plane_size(vb, 0), size);
162 return -EINVAL;
163 }
164 vb2_set_plane_payload(vb, plane_no: 0, size);
165
166 return 0;
167}
168
169static void vbi_cap_buf_queue(struct vb2_buffer *vb)
170{
171 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
172 struct vivid_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue);
173 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
174
175 dprintk(dev, 1, "%s\n", __func__);
176
177 spin_lock(lock: &dev->slock);
178 list_add_tail(new: &buf->list, head: &dev->vbi_cap_active);
179 spin_unlock(lock: &dev->slock);
180}
181
182static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
183{
184 struct vivid_dev *dev = vb2_get_drv_priv(q: vq);
185 int err;
186
187 dprintk(dev, 1, "%s\n", __func__);
188 dev->vbi_cap_seq_count = 0;
189 if (dev->start_streaming_error) {
190 dev->start_streaming_error = false;
191 err = -EINVAL;
192 } else {
193 err = vivid_start_generating_vid_cap(dev, pstreaming: &dev->vbi_cap_streaming);
194 }
195 if (err) {
196 struct vivid_buffer *buf, *tmp;
197
198 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
199 list_del(entry: &buf->list);
200 vb2_buffer_done(vb: &buf->vb.vb2_buf,
201 state: VB2_BUF_STATE_QUEUED);
202 }
203 }
204 return err;
205}
206
207/* abort streaming and wait for last buffer */
208static void vbi_cap_stop_streaming(struct vb2_queue *vq)
209{
210 struct vivid_dev *dev = vb2_get_drv_priv(q: vq);
211
212 dprintk(dev, 1, "%s\n", __func__);
213 vivid_stop_generating_vid_cap(dev, pstreaming: &dev->vbi_cap_streaming);
214}
215
216static void vbi_cap_buf_request_complete(struct vb2_buffer *vb)
217{
218 struct vivid_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue);
219
220 v4l2_ctrl_request_complete(req: vb->req_obj.req, parent: &dev->ctrl_hdl_vbi_cap);
221}
222
223const 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 .buf_request_complete = vbi_cap_buf_request_complete,
230 .wait_prepare = vb2_ops_wait_prepare,
231 .wait_finish = vb2_ops_wait_finish,
232};
233
234int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
235 struct v4l2_format *f)
236{
237 struct vivid_dev *dev = video_drvdata(file);
238 struct v4l2_vbi_format *vbi = &f->fmt.vbi;
239
240 if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
241 return -EINVAL;
242
243 vivid_g_fmt_vbi_cap(dev, vbi);
244 return 0;
245}
246
247int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
248 struct v4l2_format *f)
249{
250 struct vivid_dev *dev = video_drvdata(file);
251 int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
252
253 if (ret)
254 return ret;
255 if (f->type != V4L2_BUF_TYPE_VBI_CAPTURE && vb2_is_busy(q: &dev->vb_vbi_cap_q))
256 return -EBUSY;
257 return 0;
258}
259
260void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
261{
262 vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
263 vbi->service_set = service_set;
264 memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
265 memset(vbi->reserved, 0, sizeof(vbi->reserved));
266
267 if (vbi->service_set == 0)
268 return;
269
270 if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
271 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
272 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
273 }
274 if (vbi->service_set & V4L2_SLICED_WSS_625) {
275 unsigned i;
276
277 for (i = 7; i <= 18; i++)
278 vbi->service_lines[0][i] =
279 vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
280 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
281 }
282}
283
284int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
285{
286 struct vivid_dev *dev = video_drvdata(file);
287 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
288
289 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
290 return -EINVAL;
291
292 vivid_fill_service_lines(vbi, service_set: dev->service_set_cap);
293 return 0;
294}
295
296int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
297{
298 struct vivid_dev *dev = video_drvdata(file);
299 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
300 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
301 u32 service_set = vbi->service_set;
302
303 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
304 return -EINVAL;
305
306 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
307 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
308 vivid_fill_service_lines(vbi, service_set);
309 return 0;
310}
311
312int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
313{
314 struct vivid_dev *dev = video_drvdata(file);
315 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
316 int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
317
318 if (ret)
319 return ret;
320 if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE && vb2_is_busy(q: &dev->vb_vbi_cap_q))
321 return -EBUSY;
322 dev->service_set_cap = vbi->service_set;
323 return 0;
324}
325
326int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
327{
328 struct vivid_dev *dev = video_drvdata(file);
329 struct video_device *vdev = video_devdata(file);
330 bool is_60hz;
331
332 if (vdev->vfl_dir == VFL_DIR_RX) {
333 is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
334 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
335 cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
336 return -EINVAL;
337 } else {
338 is_60hz = dev->std_out & V4L2_STD_525_60;
339 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
340 cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
341 return -EINVAL;
342 }
343
344 cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
345 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
346 if (is_60hz) {
347 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
348 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
349 } else {
350 unsigned i;
351
352 for (i = 7; i <= 18; i++)
353 cap->service_lines[0][i] =
354 cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
355 cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
356 }
357 return 0;
358}
359

source code of linux/drivers/media/test-drivers/vivid/vivid-vbi-cap.c