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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * |
3 | * device driver for philips saa7134 based TV cards | |
4 | * video4linux video interface | |
5 | * | |
6 | * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
23 | #include <linux/init.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/module.h> | |
1da177e4 | 26 | #include <linux/kernel.h> |
1da177e4 LT |
27 | #include <linux/delay.h> |
28 | ||
29 | #include "saa7134-reg.h" | |
30 | #include "saa7134.h" | |
31 | ||
32 | /* ------------------------------------------------------------------ */ | |
33 | ||
ff699e6b | 34 | static unsigned int ts_debug; |
1da177e4 LT |
35 | module_param(ts_debug, int, 0644); |
36 | MODULE_PARM_DESC(ts_debug,"enable debug messages [ts]"); | |
37 | ||
38 | #define dprintk(fmt, arg...) if (ts_debug) \ | |
39 | printk(KERN_DEBUG "%s/ts: " fmt, dev->name , ## arg) | |
40 | ||
41 | /* ------------------------------------------------------------------ */ | |
42 | ||
43 | static int buffer_activate(struct saa7134_dev *dev, | |
44 | struct saa7134_buf *buf, | |
45 | struct saa7134_buf *next) | |
46 | { | |
1da177e4 LT |
47 | |
48 | dprintk("buffer_activate [%p]",buf); | |
0fc0686e | 49 | buf->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 LT |
50 | buf->top_seen = 0; |
51 | ||
1da177e4 LT |
52 | if (NULL == next) |
53 | next = buf; | |
54 | if (V4L2_FIELD_TOP == buf->vb.field) { | |
55 | dprintk("- [top] buf=%p next=%p\n",buf,next); | |
56 | saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(buf)); | |
57 | saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(next)); | |
58 | } else { | |
59 | dprintk("- [bottom] buf=%p next=%p\n",buf,next); | |
60 | saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(next)); | |
61 | saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(buf)); | |
62 | } | |
1da177e4 LT |
63 | |
64 | /* start DMA */ | |
65 | saa7134_set_dmabits(dev); | |
66 | ||
82aa98fd | 67 | mod_timer(&dev->ts_q.timeout, jiffies+TS_BUFFER_TIMEOUT); |
92c36147 | 68 | |
6b6b7543 DB |
69 | if (!dev->ts_started) |
70 | saa7134_ts_start(dev); | |
92c36147 | 71 | |
1da177e4 LT |
72 | return 0; |
73 | } | |
74 | ||
75 | static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb, | |
92c36147 | 76 | enum v4l2_field field) |
1da177e4 LT |
77 | { |
78 | struct saa7134_dev *dev = q->priv_data; | |
79 | struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb); | |
80 | unsigned int lines, llength, size; | |
81 | int err; | |
82 | ||
83 | dprintk("buffer_prepare [%p,%s]\n",buf,v4l2_field_names[field]); | |
84 | ||
85 | llength = TS_PACKET_SIZE; | |
86 | lines = dev->ts.nr_packets; | |
87 | ||
88 | size = lines * llength; | |
89 | if (0 != buf->vb.baddr && buf->vb.bsize < size) | |
90 | return -EINVAL; | |
91 | ||
92 | if (buf->vb.size != size) { | |
c7b0ac05 | 93 | saa7134_dma_free(q,buf); |
1da177e4 LT |
94 | } |
95 | ||
0fc0686e | 96 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
6b6b7543 | 97 | |
c1accaa2 MCC |
98 | struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); |
99 | ||
6b6b7543 DB |
100 | dprintk("buffer_prepare: needs_init\n"); |
101 | ||
1da177e4 LT |
102 | buf->vb.width = llength; |
103 | buf->vb.height = lines; | |
104 | buf->vb.size = size; | |
105 | buf->pt = &dev->ts.pt_ts; | |
106 | ||
c7b0ac05 | 107 | err = videobuf_iolock(q,&buf->vb,NULL); |
1da177e4 LT |
108 | if (err) |
109 | goto oops; | |
110 | err = saa7134_pgtable_build(dev->pci,buf->pt, | |
c1accaa2 MCC |
111 | dma->sglist, |
112 | dma->sglen, | |
1da177e4 LT |
113 | saa7134_buffer_startpage(buf)); |
114 | if (err) | |
115 | goto oops; | |
116 | } | |
3aa4f48a | 117 | |
0fc0686e | 118 | buf->vb.state = VIDEOBUF_PREPARED; |
1da177e4 LT |
119 | buf->activate = buffer_activate; |
120 | buf->vb.field = field; | |
121 | return 0; | |
122 | ||
123 | oops: | |
c7b0ac05 | 124 | saa7134_dma_free(q,buf); |
1da177e4 LT |
125 | return err; |
126 | } | |
127 | ||
128 | static int | |
129 | buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) | |
130 | { | |
131 | struct saa7134_dev *dev = q->priv_data; | |
132 | ||
133 | *size = TS_PACKET_SIZE * dev->ts.nr_packets; | |
134 | if (0 == *count) | |
135 | *count = dev->ts.nr_bufs; | |
136 | *count = saa7134_buffer_count(*size,*count); | |
6b6b7543 | 137 | |
1da177e4 LT |
138 | return 0; |
139 | } | |
140 | ||
141 | static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
142 | { | |
143 | struct saa7134_dev *dev = q->priv_data; | |
144 | struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb); | |
145 | ||
146 | saa7134_buffer_queue(dev,&dev->ts_q,buf); | |
147 | } | |
148 | ||
149 | static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
150 | { | |
1da177e4 | 151 | struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb); |
92c36147 | 152 | struct saa7134_dev *dev = q->priv_data; |
1da177e4 | 153 | |
6b6b7543 DB |
154 | if (dev->ts_started) |
155 | saa7134_ts_stop(dev); | |
156 | ||
c7b0ac05 | 157 | saa7134_dma_free(q,buf); |
1da177e4 LT |
158 | } |
159 | ||
160 | struct videobuf_queue_ops saa7134_ts_qops = { | |
161 | .buf_setup = buffer_setup, | |
162 | .buf_prepare = buffer_prepare, | |
163 | .buf_queue = buffer_queue, | |
164 | .buf_release = buffer_release, | |
165 | }; | |
166 | EXPORT_SYMBOL_GPL(saa7134_ts_qops); | |
167 | ||
168 | /* ----------------------------------------------------------- */ | |
169 | /* exported stuff */ | |
170 | ||
3aa4f48a | 171 | static unsigned int tsbufs = 8; |
1da177e4 | 172 | module_param(tsbufs, int, 0444); |
6b6b7543 | 173 | MODULE_PARM_DESC(tsbufs, "number of ts buffers for read/write IO, range 2-32"); |
1da177e4 | 174 | |
3aa4f48a | 175 | static unsigned int ts_nr_packets = 64; |
1da177e4 LT |
176 | module_param(ts_nr_packets, int, 0444); |
177 | MODULE_PARM_DESC(ts_nr_packets,"size of a ts buffers (in ts packets)"); | |
178 | ||
cb71201f ML |
179 | int saa7134_ts_init_hw(struct saa7134_dev *dev) |
180 | { | |
181 | /* deactivate TS softreset */ | |
182 | saa_writeb(SAA7134_TS_SERIAL1, 0x00); | |
183 | /* TSSOP high active, TSVAL high active, TSLOCK ignored */ | |
92c36147 | 184 | saa_writeb(SAA7134_TS_PARALLEL, 0x6c); |
cb71201f ML |
185 | saa_writeb(SAA7134_TS_PARALLEL_SERIAL, (TS_PACKET_SIZE-1)); |
186 | saa_writeb(SAA7134_TS_DMA0, ((dev->ts.nr_packets-1)&0xff)); | |
187 | saa_writeb(SAA7134_TS_DMA1, (((dev->ts.nr_packets-1)>>8)&0xff)); | |
188 | /* TSNOPIT=0, TSCOLAP=0 */ | |
189 | saa_writeb(SAA7134_TS_DMA2, | |
190 | ((((dev->ts.nr_packets-1)>>16)&0x3f) | 0x00)); | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
1da177e4 LT |
195 | int saa7134_ts_init1(struct saa7134_dev *dev) |
196 | { | |
197 | /* sanitycheck insmod options */ | |
198 | if (tsbufs < 2) | |
199 | tsbufs = 2; | |
200 | if (tsbufs > VIDEO_MAX_FRAME) | |
201 | tsbufs = VIDEO_MAX_FRAME; | |
202 | if (ts_nr_packets < 4) | |
203 | ts_nr_packets = 4; | |
204 | if (ts_nr_packets > 312) | |
205 | ts_nr_packets = 312; | |
206 | dev->ts.nr_bufs = tsbufs; | |
207 | dev->ts.nr_packets = ts_nr_packets; | |
208 | ||
209 | INIT_LIST_HEAD(&dev->ts_q.queue); | |
210 | init_timer(&dev->ts_q.timeout); | |
211 | dev->ts_q.timeout.function = saa7134_buffer_timeout; | |
212 | dev->ts_q.timeout.data = (unsigned long)(&dev->ts_q); | |
213 | dev->ts_q.dev = dev; | |
214 | dev->ts_q.need_two = 1; | |
6b6b7543 | 215 | dev->ts_started = 0; |
1da177e4 LT |
216 | saa7134_pgtable_alloc(dev->pci,&dev->ts.pt_ts); |
217 | ||
218 | /* init TS hw */ | |
cb71201f | 219 | saa7134_ts_init_hw(dev); |
1da177e4 LT |
220 | |
221 | return 0; | |
222 | } | |
223 | ||
6b6b7543 DB |
224 | /* Function for stop TS */ |
225 | int saa7134_ts_stop(struct saa7134_dev *dev) | |
226 | { | |
227 | dprintk("TS stop\n"); | |
228 | ||
229 | BUG_ON(!dev->ts_started); | |
230 | ||
231 | /* Stop TS stream */ | |
232 | switch (saa7134_boards[dev->board].ts_type) { | |
233 | case SAA7134_MPEG_TS_PARALLEL: | |
234 | saa_writeb(SAA7134_TS_PARALLEL, 0x6c); | |
235 | dev->ts_started = 0; | |
236 | break; | |
237 | case SAA7134_MPEG_TS_SERIAL: | |
238 | saa_writeb(SAA7134_TS_SERIAL0, 0x40); | |
239 | dev->ts_started = 0; | |
240 | break; | |
241 | } | |
242 | return 0; | |
243 | } | |
244 | ||
245 | /* Function for start TS */ | |
246 | int saa7134_ts_start(struct saa7134_dev *dev) | |
247 | { | |
248 | dprintk("TS start\n"); | |
249 | ||
250 | BUG_ON(dev->ts_started); | |
251 | ||
08be64be DB |
252 | /* dma: setup channel 5 (= TS) */ |
253 | saa_writeb(SAA7134_TS_DMA0, (dev->ts.nr_packets - 1) & 0xff); | |
254 | saa_writeb(SAA7134_TS_DMA1, | |
255 | ((dev->ts.nr_packets - 1) >> 8) & 0xff); | |
256 | /* TSNOPIT=0, TSCOLAP=0 */ | |
257 | saa_writeb(SAA7134_TS_DMA2, | |
258 | (((dev->ts.nr_packets - 1) >> 16) & 0x3f) | 0x00); | |
259 | saa_writel(SAA7134_RS_PITCH(5), TS_PACKET_SIZE); | |
260 | saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_16 | | |
261 | SAA7134_RS_CONTROL_ME | | |
262 | (dev->ts.pt_ts.dma >> 12)); | |
263 | ||
264 | /* reset hardware TS buffers */ | |
6b6b7543 DB |
265 | saa_writeb(SAA7134_TS_SERIAL1, 0x00); |
266 | saa_writeb(SAA7134_TS_SERIAL1, 0x03); | |
267 | saa_writeb(SAA7134_TS_SERIAL1, 0x00); | |
268 | saa_writeb(SAA7134_TS_SERIAL1, 0x01); | |
269 | ||
270 | /* TS clock non-inverted */ | |
271 | saa_writeb(SAA7134_TS_SERIAL1, 0x00); | |
272 | ||
273 | /* Start TS stream */ | |
274 | switch (saa7134_boards[dev->board].ts_type) { | |
275 | case SAA7134_MPEG_TS_PARALLEL: | |
276 | saa_writeb(SAA7134_TS_SERIAL0, 0x40); | |
4007a672 MK |
277 | saa_writeb(SAA7134_TS_PARALLEL, 0xec | |
278 | (saa7134_boards[dev->board].ts_force_val << 4)); | |
6b6b7543 DB |
279 | break; |
280 | case SAA7134_MPEG_TS_SERIAL: | |
281 | saa_writeb(SAA7134_TS_SERIAL0, 0xd8); | |
4007a672 MK |
282 | saa_writeb(SAA7134_TS_PARALLEL, 0x6c | |
283 | (saa7134_boards[dev->board].ts_force_val << 4)); | |
6b6b7543 DB |
284 | saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 0xbc); |
285 | saa_writeb(SAA7134_TS_SERIAL1, 0x02); | |
286 | break; | |
287 | } | |
288 | ||
289 | dev->ts_started = 1; | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
1da177e4 LT |
294 | int saa7134_ts_fini(struct saa7134_dev *dev) |
295 | { | |
296 | saa7134_pgtable_free(dev->pci,&dev->ts.pt_ts); | |
297 | return 0; | |
298 | } | |
299 | ||
1da177e4 LT |
300 | void saa7134_irq_ts_done(struct saa7134_dev *dev, unsigned long status) |
301 | { | |
302 | enum v4l2_field field; | |
303 | ||
304 | spin_lock(&dev->slock); | |
305 | if (dev->ts_q.curr) { | |
306 | field = dev->ts_q.curr->vb.field; | |
307 | if (field == V4L2_FIELD_TOP) { | |
3aa4f48a | 308 | if ((status & 0x100000) != 0x000000) |
1da177e4 LT |
309 | goto done; |
310 | } else { | |
3aa4f48a | 311 | if ((status & 0x100000) != 0x100000) |
1da177e4 LT |
312 | goto done; |
313 | } | |
0fc0686e | 314 | saa7134_buffer_finish(dev,&dev->ts_q,VIDEOBUF_DONE); |
1da177e4 LT |
315 | } |
316 | saa7134_buffer_next(dev,&dev->ts_q); | |
317 | ||
318 | done: | |
319 | spin_unlock(&dev->slock); | |
320 | } | |
321 | ||
322 | /* ----------------------------------------------------------- */ | |
323 | /* | |
324 | * Local variables: | |
325 | * c-basic-offset: 8 | |
326 | * End: | |
327 | */ |