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20#include "saa7134.h"
21#include "saa7134-reg.h"
22
23#include <linux/init.h>
24#include <linux/list.h>
25#include <linux/module.h>
26#include <linux/kernel.h>
27#include <linux/delay.h>
28
29#include <media/v4l2-common.h>
30#include <media/v4l2-event.h>
31
32
33
34MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
35MODULE_LICENSE("GPL");
36
37static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
38
39module_param_array(empress_nr, int, NULL, 0444);
40MODULE_PARM_DESC(empress_nr,"ts device number");
41
42
43
44static int start_streaming(struct vb2_queue *vq, unsigned int count)
45{
46 struct saa7134_dmaqueue *dmaq = vq->drv_priv;
47 struct saa7134_dev *dev = dmaq->dev;
48 u32 leading_null_bytes = 0;
49 int err;
50
51 err = saa7134_ts_start_streaming(vq, count);
52 if (err)
53 return err;
54
55
56
57 switch (dev->board) {
58 case SAA7134_BOARD_BEHOLD_M6:
59 case SAA7134_BOARD_BEHOLD_M63:
60 case SAA7134_BOARD_BEHOLD_M6_EXTRA:
61 leading_null_bytes = 1;
62 break;
63 }
64 saa_call_all(dev, core, init, leading_null_bytes);
65
66 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
67 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
68 dev->empress_started = 1;
69 return 0;
70}
71
72static void stop_streaming(struct vb2_queue *vq)
73{
74 struct saa7134_dmaqueue *dmaq = vq->drv_priv;
75 struct saa7134_dev *dev = dmaq->dev;
76
77 saa7134_ts_stop_streaming(vq);
78 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
79 msleep(20);
80 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
81 msleep(100);
82
83 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
84 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
85 dev->empress_started = 0;
86}
87
88static struct vb2_ops saa7134_empress_qops = {
89 .queue_setup = saa7134_ts_queue_setup,
90 .buf_init = saa7134_ts_buffer_init,
91 .buf_prepare = saa7134_ts_buffer_prepare,
92 .buf_queue = saa7134_vb2_buffer_queue,
93 .wait_prepare = vb2_ops_wait_prepare,
94 .wait_finish = vb2_ops_wait_finish,
95 .start_streaming = start_streaming,
96 .stop_streaming = stop_streaming,
97};
98
99
100
101static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
102 struct v4l2_fmtdesc *f)
103{
104 if (f->index != 0)
105 return -EINVAL;
106
107 strlcpy(f->description, "MPEG TS", sizeof(f->description));
108 f->pixelformat = V4L2_PIX_FMT_MPEG;
109 f->flags = V4L2_FMT_FLAG_COMPRESSED;
110 return 0;
111}
112
113static int empress_g_fmt_vid_cap(struct file *file, void *priv,
114 struct v4l2_format *f)
115{
116 struct saa7134_dev *dev = video_drvdata(file);
117 struct v4l2_subdev_format fmt = {
118 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
119 };
120 struct v4l2_mbus_framefmt *mbus_fmt = &fmt.format;
121
122 saa_call_all(dev, pad, get_fmt, NULL, &fmt);
123
124 v4l2_fill_pix_format(&f->fmt.pix, mbus_fmt);
125 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
126 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
127 f->fmt.pix.bytesperline = 0;
128
129 return 0;
130}
131
132static int empress_s_fmt_vid_cap(struct file *file, void *priv,
133 struct v4l2_format *f)
134{
135 struct saa7134_dev *dev = video_drvdata(file);
136 struct v4l2_subdev_format format = {
137 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
138 };
139
140 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
141 saa_call_all(dev, pad, set_fmt, NULL, &format);
142 v4l2_fill_pix_format(&f->fmt.pix, &format.format);
143
144 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
145 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
146 f->fmt.pix.bytesperline = 0;
147
148 return 0;
149}
150
151static int empress_try_fmt_vid_cap(struct file *file, void *priv,
152 struct v4l2_format *f)
153{
154 struct saa7134_dev *dev = video_drvdata(file);
155 struct v4l2_subdev_pad_config pad_cfg;
156 struct v4l2_subdev_format format = {
157 .which = V4L2_SUBDEV_FORMAT_TRY,
158 };
159
160 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
161 saa_call_all(dev, pad, set_fmt, &pad_cfg, &format);
162 v4l2_fill_pix_format(&f->fmt.pix, &format.format);
163
164 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
165 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
166 f->fmt.pix.bytesperline = 0;
167
168 return 0;
169}
170
171static const struct v4l2_file_operations ts_fops =
172{
173 .owner = THIS_MODULE,
174 .open = v4l2_fh_open,
175 .release = vb2_fop_release,
176 .read = vb2_fop_read,
177 .poll = vb2_fop_poll,
178 .mmap = vb2_fop_mmap,
179 .unlocked_ioctl = video_ioctl2,
180};
181
182static const struct v4l2_ioctl_ops ts_ioctl_ops = {
183 .vidioc_querycap = saa7134_querycap,
184 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
185 .vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,
186 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
187 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
188 .vidioc_reqbufs = vb2_ioctl_reqbufs,
189 .vidioc_querybuf = vb2_ioctl_querybuf,
190 .vidioc_qbuf = vb2_ioctl_qbuf,
191 .vidioc_dqbuf = vb2_ioctl_dqbuf,
192 .vidioc_streamon = vb2_ioctl_streamon,
193 .vidioc_streamoff = vb2_ioctl_streamoff,
194 .vidioc_g_frequency = saa7134_g_frequency,
195 .vidioc_s_frequency = saa7134_s_frequency,
196 .vidioc_g_tuner = saa7134_g_tuner,
197 .vidioc_s_tuner = saa7134_s_tuner,
198 .vidioc_enum_input = saa7134_enum_input,
199 .vidioc_g_input = saa7134_g_input,
200 .vidioc_s_input = saa7134_s_input,
201 .vidioc_s_std = saa7134_s_std,
202 .vidioc_g_std = saa7134_g_std,
203 .vidioc_querystd = saa7134_querystd,
204 .vidioc_log_status = v4l2_ctrl_log_status,
205 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
206 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
207};
208
209
210
211static struct video_device saa7134_empress_template = {
212 .name = "saa7134-empress",
213 .fops = &ts_fops,
214 .ioctl_ops = &ts_ioctl_ops,
215
216 .tvnorms = SAA7134_NORMS,
217};
218
219static void empress_signal_update(struct work_struct *work)
220{
221 struct saa7134_dev* dev =
222 container_of(work, struct saa7134_dev, empress_workqueue);
223
224 if (dev->nosignal) {
225 pr_debug("no video signal\n");
226 } else {
227 pr_debug("video signal acquired\n");
228 }
229}
230
231static void empress_signal_change(struct saa7134_dev *dev)
232{
233 schedule_work(&dev->empress_workqueue);
234}
235
236static bool empress_ctrl_filter(const struct v4l2_ctrl *ctrl)
237{
238 switch (ctrl->id) {
239 case V4L2_CID_BRIGHTNESS:
240 case V4L2_CID_HUE:
241 case V4L2_CID_CONTRAST:
242 case V4L2_CID_SATURATION:
243 case V4L2_CID_AUDIO_MUTE:
244 case V4L2_CID_AUDIO_VOLUME:
245 case V4L2_CID_PRIVATE_INVERT:
246 case V4L2_CID_PRIVATE_AUTOMUTE:
247 return true;
248 default:
249 return false;
250 }
251}
252
253static int empress_init(struct saa7134_dev *dev)
254{
255 struct v4l2_ctrl_handler *hdl = &dev->empress_ctrl_handler;
256 struct vb2_queue *q;
257 int err;
258
259 pr_debug("%s: %s\n", dev->name, __func__);
260 dev->empress_dev = video_device_alloc();
261 if (NULL == dev->empress_dev)
262 return -ENOMEM;
263 *(dev->empress_dev) = saa7134_empress_template;
264 dev->empress_dev->v4l2_dev = &dev->v4l2_dev;
265 dev->empress_dev->release = video_device_release;
266 dev->empress_dev->lock = &dev->lock;
267 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
268 "%s empress (%s)", dev->name,
269 saa7134_boards[dev->board].name);
270 v4l2_ctrl_handler_init(hdl, 21);
271 v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler, empress_ctrl_filter);
272 if (dev->empress_sd)
273 v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL);
274 if (hdl->error) {
275 video_device_release(dev->empress_dev);
276 return hdl->error;
277 }
278 dev->empress_dev->ctrl_handler = hdl;
279
280 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
281
282 q = &dev->empress_vbq;
283 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
284
285
286
287
288
289 q->io_modes = VB2_MMAP | VB2_READ;
290 q->drv_priv = &dev->ts_q;
291 q->ops = &saa7134_empress_qops;
292 q->gfp_flags = GFP_DMA32;
293 q->mem_ops = &vb2_dma_sg_memops;
294 q->buf_struct_size = sizeof(struct saa7134_buf);
295 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
296 q->lock = &dev->lock;
297 err = vb2_queue_init(q);
298 if (err)
299 return err;
300 dev->empress_dev->queue = q;
301
302 video_set_drvdata(dev->empress_dev, dev);
303 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
304 empress_nr[dev->nr]);
305 if (err < 0) {
306 pr_info("%s: can't register video device\n",
307 dev->name);
308 video_device_release(dev->empress_dev);
309 dev->empress_dev = NULL;
310 return err;
311 }
312 pr_info("%s: registered device %s [mpeg]\n",
313 dev->name, video_device_node_name(dev->empress_dev));
314
315 empress_signal_update(&dev->empress_workqueue);
316 return 0;
317}
318
319static int empress_fini(struct saa7134_dev *dev)
320{
321 pr_debug("%s: %s\n", dev->name, __func__);
322
323 if (NULL == dev->empress_dev)
324 return 0;
325 flush_work(&dev->empress_workqueue);
326 video_unregister_device(dev->empress_dev);
327 vb2_queue_release(&dev->empress_vbq);
328 v4l2_ctrl_handler_free(&dev->empress_ctrl_handler);
329 dev->empress_dev = NULL;
330 return 0;
331}
332
333static struct saa7134_mpeg_ops empress_ops = {
334 .type = SAA7134_MPEG_EMPRESS,
335 .init = empress_init,
336 .fini = empress_fini,
337 .signal_change = empress_signal_change,
338};
339
340static int __init empress_register(void)
341{
342 return saa7134_ts_register(&empress_ops);
343}
344
345static void __exit empress_unregister(void)
346{
347 saa7134_ts_unregister(&empress_ops);
348}
349
350module_init(empress_register);
351module_exit(empress_unregister);
352
