This source file includes following definitions.
- start_streaming
- stop_streaming
- empress_enum_fmt_vid_cap
- empress_g_fmt_vid_cap
- empress_s_fmt_vid_cap
- empress_try_fmt_vid_cap
- empress_signal_update
- empress_signal_change
- empress_ctrl_filter
- empress_init
- empress_fini
- empress_register
- empress_unregister
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7 #include "saa7134.h"
8 #include "saa7134-reg.h"
9
10 #include <linux/init.h>
11 #include <linux/list.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/delay.h>
15
16 #include <media/v4l2-common.h>
17 #include <media/v4l2-event.h>
18
19
20
21 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
22 MODULE_LICENSE("GPL");
23
24 static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
25
26 module_param_array(empress_nr, int, NULL, 0444);
27 MODULE_PARM_DESC(empress_nr,"ts device number");
28
29
30
31 static int start_streaming(struct vb2_queue *vq, unsigned int count)
32 {
33 struct saa7134_dmaqueue *dmaq = vq->drv_priv;
34 struct saa7134_dev *dev = dmaq->dev;
35 u32 leading_null_bytes = 0;
36 int err;
37
38 err = saa7134_ts_start_streaming(vq, count);
39 if (err)
40 return err;
41
42
43
44 switch (dev->board) {
45 case SAA7134_BOARD_BEHOLD_M6:
46 case SAA7134_BOARD_BEHOLD_M63:
47 case SAA7134_BOARD_BEHOLD_M6_EXTRA:
48 leading_null_bytes = 1;
49 break;
50 }
51 saa_call_all(dev, core, init, leading_null_bytes);
52
53 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
54 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
55 dev->empress_started = 1;
56 return 0;
57 }
58
59 static void stop_streaming(struct vb2_queue *vq)
60 {
61 struct saa7134_dmaqueue *dmaq = vq->drv_priv;
62 struct saa7134_dev *dev = dmaq->dev;
63
64 saa7134_ts_stop_streaming(vq);
65 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
66 msleep(20);
67 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
68 msleep(100);
69
70 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
71 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
72 dev->empress_started = 0;
73 }
74
75 static const struct vb2_ops saa7134_empress_qops = {
76 .queue_setup = saa7134_ts_queue_setup,
77 .buf_init = saa7134_ts_buffer_init,
78 .buf_prepare = saa7134_ts_buffer_prepare,
79 .buf_queue = saa7134_vb2_buffer_queue,
80 .wait_prepare = vb2_ops_wait_prepare,
81 .wait_finish = vb2_ops_wait_finish,
82 .start_streaming = start_streaming,
83 .stop_streaming = stop_streaming,
84 };
85
86
87
88 static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
89 struct v4l2_fmtdesc *f)
90 {
91 if (f->index != 0)
92 return -EINVAL;
93
94 f->pixelformat = V4L2_PIX_FMT_MPEG;
95 return 0;
96 }
97
98 static int empress_g_fmt_vid_cap(struct file *file, void *priv,
99 struct v4l2_format *f)
100 {
101 struct saa7134_dev *dev = video_drvdata(file);
102 struct v4l2_subdev_format fmt = {
103 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
104 };
105 struct v4l2_mbus_framefmt *mbus_fmt = &fmt.format;
106
107 saa_call_all(dev, pad, get_fmt, NULL, &fmt);
108
109 v4l2_fill_pix_format(&f->fmt.pix, mbus_fmt);
110 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
111 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
112 f->fmt.pix.bytesperline = 0;
113
114 return 0;
115 }
116
117 static int empress_s_fmt_vid_cap(struct file *file, void *priv,
118 struct v4l2_format *f)
119 {
120 struct saa7134_dev *dev = video_drvdata(file);
121 struct v4l2_subdev_format format = {
122 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
123 };
124
125 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
126 saa_call_all(dev, pad, set_fmt, NULL, &format);
127 v4l2_fill_pix_format(&f->fmt.pix, &format.format);
128
129 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
130 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
131 f->fmt.pix.bytesperline = 0;
132
133 return 0;
134 }
135
136 static int empress_try_fmt_vid_cap(struct file *file, void *priv,
137 struct v4l2_format *f)
138 {
139 struct saa7134_dev *dev = video_drvdata(file);
140 struct v4l2_subdev_pad_config pad_cfg;
141 struct v4l2_subdev_format format = {
142 .which = V4L2_SUBDEV_FORMAT_TRY,
143 };
144
145 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
146 saa_call_all(dev, pad, set_fmt, &pad_cfg, &format);
147 v4l2_fill_pix_format(&f->fmt.pix, &format.format);
148
149 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
150 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
151 f->fmt.pix.bytesperline = 0;
152
153 return 0;
154 }
155
156 static const struct v4l2_file_operations ts_fops =
157 {
158 .owner = THIS_MODULE,
159 .open = v4l2_fh_open,
160 .release = vb2_fop_release,
161 .read = vb2_fop_read,
162 .poll = vb2_fop_poll,
163 .mmap = vb2_fop_mmap,
164 .unlocked_ioctl = video_ioctl2,
165 };
166
167 static const struct v4l2_ioctl_ops ts_ioctl_ops = {
168 .vidioc_querycap = saa7134_querycap,
169 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
170 .vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,
171 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
172 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
173 .vidioc_reqbufs = vb2_ioctl_reqbufs,
174 .vidioc_querybuf = vb2_ioctl_querybuf,
175 .vidioc_qbuf = vb2_ioctl_qbuf,
176 .vidioc_dqbuf = vb2_ioctl_dqbuf,
177 .vidioc_expbuf = vb2_ioctl_expbuf,
178 .vidioc_streamon = vb2_ioctl_streamon,
179 .vidioc_streamoff = vb2_ioctl_streamoff,
180 .vidioc_g_frequency = saa7134_g_frequency,
181 .vidioc_s_frequency = saa7134_s_frequency,
182 .vidioc_g_tuner = saa7134_g_tuner,
183 .vidioc_s_tuner = saa7134_s_tuner,
184 .vidioc_enum_input = saa7134_enum_input,
185 .vidioc_g_input = saa7134_g_input,
186 .vidioc_s_input = saa7134_s_input,
187 .vidioc_s_std = saa7134_s_std,
188 .vidioc_g_std = saa7134_g_std,
189 .vidioc_querystd = saa7134_querystd,
190 .vidioc_log_status = v4l2_ctrl_log_status,
191 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
192 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
193 };
194
195
196
197 static const struct video_device saa7134_empress_template = {
198 .name = "saa7134-empress",
199 .fops = &ts_fops,
200 .ioctl_ops = &ts_ioctl_ops,
201
202 .tvnorms = SAA7134_NORMS,
203 };
204
205 static void empress_signal_update(struct work_struct *work)
206 {
207 struct saa7134_dev* dev =
208 container_of(work, struct saa7134_dev, empress_workqueue);
209
210 if (dev->nosignal) {
211 pr_debug("no video signal\n");
212 } else {
213 pr_debug("video signal acquired\n");
214 }
215 }
216
217 static void empress_signal_change(struct saa7134_dev *dev)
218 {
219 schedule_work(&dev->empress_workqueue);
220 }
221
222 static bool empress_ctrl_filter(const struct v4l2_ctrl *ctrl)
223 {
224 switch (ctrl->id) {
225 case V4L2_CID_BRIGHTNESS:
226 case V4L2_CID_HUE:
227 case V4L2_CID_CONTRAST:
228 case V4L2_CID_SATURATION:
229 case V4L2_CID_AUDIO_MUTE:
230 case V4L2_CID_AUDIO_VOLUME:
231 case V4L2_CID_PRIVATE_INVERT:
232 case V4L2_CID_PRIVATE_AUTOMUTE:
233 return true;
234 default:
235 return false;
236 }
237 }
238
239 static int empress_init(struct saa7134_dev *dev)
240 {
241 struct v4l2_ctrl_handler *hdl = &dev->empress_ctrl_handler;
242 struct vb2_queue *q;
243 int err;
244
245 pr_debug("%s: %s\n", dev->name, __func__);
246 dev->empress_dev = video_device_alloc();
247 if (NULL == dev->empress_dev)
248 return -ENOMEM;
249 *(dev->empress_dev) = saa7134_empress_template;
250 dev->empress_dev->v4l2_dev = &dev->v4l2_dev;
251 dev->empress_dev->release = video_device_release;
252 dev->empress_dev->lock = &dev->lock;
253 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
254 "%s empress (%s)", dev->name,
255 saa7134_boards[dev->board].name);
256 v4l2_ctrl_handler_init(hdl, 21);
257 v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler, empress_ctrl_filter, false);
258 if (dev->empress_sd)
259 v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL, true);
260 if (hdl->error) {
261 video_device_release(dev->empress_dev);
262 return hdl->error;
263 }
264 dev->empress_dev->ctrl_handler = hdl;
265
266 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
267
268 q = &dev->empress_vbq;
269 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
270
271
272
273
274
275 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
276 q->drv_priv = &dev->ts_q;
277 q->ops = &saa7134_empress_qops;
278 q->gfp_flags = GFP_DMA32;
279 q->mem_ops = &vb2_dma_sg_memops;
280 q->buf_struct_size = sizeof(struct saa7134_buf);
281 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
282 q->lock = &dev->lock;
283 q->dev = &dev->pci->dev;
284 err = vb2_queue_init(q);
285 if (err)
286 return err;
287 dev->empress_dev->queue = q;
288 dev->empress_dev->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
289 V4L2_CAP_VIDEO_CAPTURE;
290 if (dev->tuner_type != TUNER_ABSENT && dev->tuner_type != UNSET)
291 dev->empress_dev->device_caps |= V4L2_CAP_TUNER;
292
293 video_set_drvdata(dev->empress_dev, dev);
294 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
295 empress_nr[dev->nr]);
296 if (err < 0) {
297 pr_info("%s: can't register video device\n",
298 dev->name);
299 video_device_release(dev->empress_dev);
300 dev->empress_dev = NULL;
301 return err;
302 }
303 pr_info("%s: registered device %s [mpeg]\n",
304 dev->name, video_device_node_name(dev->empress_dev));
305
306 empress_signal_update(&dev->empress_workqueue);
307 return 0;
308 }
309
310 static int empress_fini(struct saa7134_dev *dev)
311 {
312 pr_debug("%s: %s\n", dev->name, __func__);
313
314 if (NULL == dev->empress_dev)
315 return 0;
316 flush_work(&dev->empress_workqueue);
317 video_unregister_device(dev->empress_dev);
318 vb2_queue_release(&dev->empress_vbq);
319 v4l2_ctrl_handler_free(&dev->empress_ctrl_handler);
320 dev->empress_dev = NULL;
321 return 0;
322 }
323
324 static struct saa7134_mpeg_ops empress_ops = {
325 .type = SAA7134_MPEG_EMPRESS,
326 .init = empress_init,
327 .fini = empress_fini,
328 .signal_change = empress_signal_change,
329 };
330
331 static int __init empress_register(void)
332 {
333 return saa7134_ts_register(&empress_ops);
334 }
335
336 static void __exit empress_unregister(void)
337 {
338 saa7134_ts_unregister(&empress_ops);
339 }
340
341 module_init(empress_register);
342 module_exit(empress_unregister);