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16#include "saa7134.h"
17#include "saa7134-reg.h"
18
19#include <linux/init.h>
20#include <linux/list.h>
21#include <linux/module.h>
22#include <linux/kernel.h>
23#include <linux/delay.h>
24
25#include <media/v4l2-common.h>
26#include <media/v4l2-event.h>
27
28
29
30MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
31MODULE_LICENSE("GPL");
32
33static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
34
35module_param_array(empress_nr, int, NULL, 0444);
36MODULE_PARM_DESC(empress_nr,"ts device number");
37
38
39
40static int start_streaming(struct vb2_queue *vq, unsigned int count)
41{
42 struct saa7134_dmaqueue *dmaq = vq->drv_priv;
43 struct saa7134_dev *dev = dmaq->dev;
44 u32 leading_null_bytes = 0;
45 int err;
46
47 err = saa7134_ts_start_streaming(vq, count);
48 if (err)
49 return err;
50
51
52
53 switch (dev->board) {
54 case SAA7134_BOARD_BEHOLD_M6:
55 case SAA7134_BOARD_BEHOLD_M63:
56 case SAA7134_BOARD_BEHOLD_M6_EXTRA:
57 leading_null_bytes = 1;
58 break;
59 }
60 saa_call_all(dev, core, init, leading_null_bytes);
61
62 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
63 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
64 dev->empress_started = 1;
65 return 0;
66}
67
68static void stop_streaming(struct vb2_queue *vq)
69{
70 struct saa7134_dmaqueue *dmaq = vq->drv_priv;
71 struct saa7134_dev *dev = dmaq->dev;
72
73 saa7134_ts_stop_streaming(vq);
74 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
75 msleep(20);
76 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
77 msleep(100);
78
79 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
80 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
81 dev->empress_started = 0;
82}
83
84static const struct vb2_ops saa7134_empress_qops = {
85 .queue_setup = saa7134_ts_queue_setup,
86 .buf_init = saa7134_ts_buffer_init,
87 .buf_prepare = saa7134_ts_buffer_prepare,
88 .buf_queue = saa7134_vb2_buffer_queue,
89 .wait_prepare = vb2_ops_wait_prepare,
90 .wait_finish = vb2_ops_wait_finish,
91 .start_streaming = start_streaming,
92 .stop_streaming = stop_streaming,
93};
94
95
96
97static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
98 struct v4l2_fmtdesc *f)
99{
100 if (f->index != 0)
101 return -EINVAL;
102
103 strlcpy(f->description, "MPEG TS", sizeof(f->description));
104 f->pixelformat = V4L2_PIX_FMT_MPEG;
105 f->flags = V4L2_FMT_FLAG_COMPRESSED;
106 return 0;
107}
108
109static int empress_g_fmt_vid_cap(struct file *file, void *priv,
110 struct v4l2_format *f)
111{
112 struct saa7134_dev *dev = video_drvdata(file);
113 struct v4l2_subdev_format fmt = {
114 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
115 };
116 struct v4l2_mbus_framefmt *mbus_fmt = &fmt.format;
117
118 saa_call_all(dev, pad, get_fmt, NULL, &fmt);
119
120 v4l2_fill_pix_format(&f->fmt.pix, mbus_fmt);
121 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
122 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
123 f->fmt.pix.bytesperline = 0;
124
125 return 0;
126}
127
128static int empress_s_fmt_vid_cap(struct file *file, void *priv,
129 struct v4l2_format *f)
130{
131 struct saa7134_dev *dev = video_drvdata(file);
132 struct v4l2_subdev_format format = {
133 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
134 };
135
136 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
137 saa_call_all(dev, pad, set_fmt, NULL, &format);
138 v4l2_fill_pix_format(&f->fmt.pix, &format.format);
139
140 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
141 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
142 f->fmt.pix.bytesperline = 0;
143
144 return 0;
145}
146
147static int empress_try_fmt_vid_cap(struct file *file, void *priv,
148 struct v4l2_format *f)
149{
150 struct saa7134_dev *dev = video_drvdata(file);
151 struct v4l2_subdev_pad_config pad_cfg;
152 struct v4l2_subdev_format format = {
153 .which = V4L2_SUBDEV_FORMAT_TRY,
154 };
155
156 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
157 saa_call_all(dev, pad, set_fmt, &pad_cfg, &format);
158 v4l2_fill_pix_format(&f->fmt.pix, &format.format);
159
160 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
161 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
162 f->fmt.pix.bytesperline = 0;
163
164 return 0;
165}
166
167static const struct v4l2_file_operations ts_fops =
168{
169 .owner = THIS_MODULE,
170 .open = v4l2_fh_open,
171 .release = vb2_fop_release,
172 .read = vb2_fop_read,
173 .poll = vb2_fop_poll,
174 .mmap = vb2_fop_mmap,
175 .unlocked_ioctl = video_ioctl2,
176};
177
178static const struct v4l2_ioctl_ops ts_ioctl_ops = {
179 .vidioc_querycap = saa7134_querycap,
180 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
181 .vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,
182 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
183 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
184 .vidioc_reqbufs = vb2_ioctl_reqbufs,
185 .vidioc_querybuf = vb2_ioctl_querybuf,
186 .vidioc_qbuf = vb2_ioctl_qbuf,
187 .vidioc_dqbuf = vb2_ioctl_dqbuf,
188 .vidioc_expbuf = vb2_ioctl_expbuf,
189 .vidioc_streamon = vb2_ioctl_streamon,
190 .vidioc_streamoff = vb2_ioctl_streamoff,
191 .vidioc_g_frequency = saa7134_g_frequency,
192 .vidioc_s_frequency = saa7134_s_frequency,
193 .vidioc_g_tuner = saa7134_g_tuner,
194 .vidioc_s_tuner = saa7134_s_tuner,
195 .vidioc_enum_input = saa7134_enum_input,
196 .vidioc_g_input = saa7134_g_input,
197 .vidioc_s_input = saa7134_s_input,
198 .vidioc_s_std = saa7134_s_std,
199 .vidioc_g_std = saa7134_g_std,
200 .vidioc_querystd = saa7134_querystd,
201 .vidioc_log_status = v4l2_ctrl_log_status,
202 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
203 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
204};
205
206
207
208static const struct video_device saa7134_empress_template = {
209 .name = "saa7134-empress",
210 .fops = &ts_fops,
211 .ioctl_ops = &ts_ioctl_ops,
212
213 .tvnorms = SAA7134_NORMS,
214};
215
216static void empress_signal_update(struct work_struct *work)
217{
218 struct saa7134_dev* dev =
219 container_of(work, struct saa7134_dev, empress_workqueue);
220
221 if (dev->nosignal) {
222 pr_debug("no video signal\n");
223 } else {
224 pr_debug("video signal acquired\n");
225 }
226}
227
228static void empress_signal_change(struct saa7134_dev *dev)
229{
230 schedule_work(&dev->empress_workqueue);
231}
232
233static bool empress_ctrl_filter(const struct v4l2_ctrl *ctrl)
234{
235 switch (ctrl->id) {
236 case V4L2_CID_BRIGHTNESS:
237 case V4L2_CID_HUE:
238 case V4L2_CID_CONTRAST:
239 case V4L2_CID_SATURATION:
240 case V4L2_CID_AUDIO_MUTE:
241 case V4L2_CID_AUDIO_VOLUME:
242 case V4L2_CID_PRIVATE_INVERT:
243 case V4L2_CID_PRIVATE_AUTOMUTE:
244 return true;
245 default:
246 return false;
247 }
248}
249
250static int empress_init(struct saa7134_dev *dev)
251{
252 struct v4l2_ctrl_handler *hdl = &dev->empress_ctrl_handler;
253 struct vb2_queue *q;
254 int err;
255
256 pr_debug("%s: %s\n", dev->name, __func__);
257 dev->empress_dev = video_device_alloc();
258 if (NULL == dev->empress_dev)
259 return -ENOMEM;
260 *(dev->empress_dev) = saa7134_empress_template;
261 dev->empress_dev->v4l2_dev = &dev->v4l2_dev;
262 dev->empress_dev->release = video_device_release;
263 dev->empress_dev->lock = &dev->lock;
264 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
265 "%s empress (%s)", dev->name,
266 saa7134_boards[dev->board].name);
267 v4l2_ctrl_handler_init(hdl, 21);
268 v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler, empress_ctrl_filter);
269 if (dev->empress_sd)
270 v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL);
271 if (hdl->error) {
272 video_device_release(dev->empress_dev);
273 return hdl->error;
274 }
275 dev->empress_dev->ctrl_handler = hdl;
276
277 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
278
279 q = &dev->empress_vbq;
280 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
281
282
283
284
285
286 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
287 q->drv_priv = &dev->ts_q;
288 q->ops = &saa7134_empress_qops;
289 q->gfp_flags = GFP_DMA32;
290 q->mem_ops = &vb2_dma_sg_memops;
291 q->buf_struct_size = sizeof(struct saa7134_buf);
292 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
293 q->lock = &dev->lock;
294 q->dev = &dev->pci->dev;
295 err = vb2_queue_init(q);
296 if (err)
297 return err;
298 dev->empress_dev->queue = q;
299
300 video_set_drvdata(dev->empress_dev, dev);
301 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
302 empress_nr[dev->nr]);
303 if (err < 0) {
304 pr_info("%s: can't register video device\n",
305 dev->name);
306 video_device_release(dev->empress_dev);
307 dev->empress_dev = NULL;
308 return err;
309 }
310 pr_info("%s: registered device %s [mpeg]\n",
311 dev->name, video_device_node_name(dev->empress_dev));
312
313 empress_signal_update(&dev->empress_workqueue);
314 return 0;
315}
316
317static int empress_fini(struct saa7134_dev *dev)
318{
319 pr_debug("%s: %s\n", dev->name, __func__);
320
321 if (NULL == dev->empress_dev)
322 return 0;
323 flush_work(&dev->empress_workqueue);
324 video_unregister_device(dev->empress_dev);
325 vb2_queue_release(&dev->empress_vbq);
326 v4l2_ctrl_handler_free(&dev->empress_ctrl_handler);
327 dev->empress_dev = NULL;
328 return 0;
329}
330
331static struct saa7134_mpeg_ops empress_ops = {
332 .type = SAA7134_MPEG_EMPRESS,
333 .init = empress_init,
334 .fini = empress_fini,
335 .signal_change = empress_signal_change,
336};
337
338static int __init empress_register(void)
339{
340 return saa7134_ts_register(&empress_ops);
341}
342
343static void __exit empress_unregister(void)
344{
345 saa7134_ts_unregister(&empress_ops);
346}
347
348module_init(empress_register);
349module_exit(empress_unregister);
350
