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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 LT |
26 | #include <linux/kernel.h> |
27 | #include <linux/slab.h> | |
28 | #include <linux/delay.h> | |
29 | ||
30 | #include "saa7134-reg.h" | |
31 | #include "saa7134.h" | |
32 | ||
33 | /* ------------------------------------------------------------------ */ | |
34 | ||
ff699e6b | 35 | static unsigned int ts_debug; |
1da177e4 LT |
36 | module_param(ts_debug, int, 0644); |
37 | MODULE_PARM_DESC(ts_debug,"enable debug messages [ts]"); | |
38 | ||
39 | #define dprintk(fmt, arg...) if (ts_debug) \ | |
40 | printk(KERN_DEBUG "%s/ts: " fmt, dev->name , ## arg) | |
41 | ||
42 | /* ------------------------------------------------------------------ */ | |
43 | ||
44 | static int buffer_activate(struct saa7134_dev *dev, | |
45 | struct saa7134_buf *buf, | |
46 | struct saa7134_buf *next) | |
47 | { | |
1da177e4 LT |
48 | |
49 | dprintk("buffer_activate [%p]",buf); | |
0fc0686e | 50 | buf->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 LT |
51 | buf->top_seen = 0; |
52 | ||
1da177e4 LT |
53 | if (NULL == next) |
54 | next = buf; | |
55 | if (V4L2_FIELD_TOP == buf->vb.field) { | |
56 | dprintk("- [top] buf=%p next=%p\n",buf,next); | |
57 | saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(buf)); | |
58 | saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(next)); | |
59 | } else { | |
60 | dprintk("- [bottom] buf=%p next=%p\n",buf,next); | |
61 | saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(next)); | |
62 | saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(buf)); | |
63 | } | |
1da177e4 LT |
64 | |
65 | /* start DMA */ | |
66 | saa7134_set_dmabits(dev); | |
67 | ||
68 | mod_timer(&dev->ts_q.timeout, jiffies+BUFFER_TIMEOUT); | |
92c36147 DB |
69 | |
70 | if (dev->ts_state == SAA7134_TS_BUFF_DONE) { | |
71 | /* Clear TS cache */ | |
72 | dev->buff_cnt = 0; | |
73 | saa_writeb(SAA7134_TS_SERIAL1, 0x00); | |
74 | saa_writeb(SAA7134_TS_SERIAL1, 0x03); | |
75 | saa_writeb(SAA7134_TS_SERIAL1, 0x00); | |
76 | saa_writeb(SAA7134_TS_SERIAL1, 0x01); | |
77 | ||
78 | /* TS clock non-inverted */ | |
79 | saa_writeb(SAA7134_TS_SERIAL1, 0x00); | |
80 | ||
81 | /* Start TS stream */ | |
90a4cc70 MK |
82 | switch (saa7134_boards[dev->board].ts_type) { |
83 | case SAA7134_MPEG_TS_PARALLEL: | |
84 | saa_writeb(SAA7134_TS_SERIAL0, 0x40); | |
85 | saa_writeb(SAA7134_TS_PARALLEL, 0xec); | |
86 | break; | |
87 | case SAA7134_MPEG_TS_SERIAL: | |
88 | saa_writeb(SAA7134_TS_SERIAL0, 0xd8); | |
89 | saa_writeb(SAA7134_TS_PARALLEL, 0x6c); | |
90 | saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 0xbc); | |
91 | saa_writeb(SAA7134_TS_SERIAL1, 0x02); | |
92 | break; | |
93 | } | |
94 | ||
92c36147 DB |
95 | dev->ts_state = SAA7134_TS_STARTED; |
96 | } | |
97 | ||
1da177e4 LT |
98 | return 0; |
99 | } | |
100 | ||
101 | static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb, | |
92c36147 | 102 | enum v4l2_field field) |
1da177e4 LT |
103 | { |
104 | struct saa7134_dev *dev = q->priv_data; | |
105 | struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb); | |
106 | unsigned int lines, llength, size; | |
3aa4f48a | 107 | u32 control; |
1da177e4 LT |
108 | int err; |
109 | ||
110 | dprintk("buffer_prepare [%p,%s]\n",buf,v4l2_field_names[field]); | |
111 | ||
112 | llength = TS_PACKET_SIZE; | |
113 | lines = dev->ts.nr_packets; | |
114 | ||
115 | size = lines * llength; | |
116 | if (0 != buf->vb.baddr && buf->vb.bsize < size) | |
117 | return -EINVAL; | |
118 | ||
119 | if (buf->vb.size != size) { | |
c7b0ac05 | 120 | saa7134_dma_free(q,buf); |
1da177e4 LT |
121 | } |
122 | ||
0fc0686e | 123 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
c1accaa2 MCC |
124 | struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); |
125 | ||
1da177e4 LT |
126 | buf->vb.width = llength; |
127 | buf->vb.height = lines; | |
128 | buf->vb.size = size; | |
129 | buf->pt = &dev->ts.pt_ts; | |
130 | ||
c7b0ac05 | 131 | err = videobuf_iolock(q,&buf->vb,NULL); |
1da177e4 LT |
132 | if (err) |
133 | goto oops; | |
134 | err = saa7134_pgtable_build(dev->pci,buf->pt, | |
c1accaa2 MCC |
135 | dma->sglist, |
136 | dma->sglen, | |
1da177e4 LT |
137 | saa7134_buffer_startpage(buf)); |
138 | if (err) | |
139 | goto oops; | |
140 | } | |
3aa4f48a | 141 | |
92c36147 DB |
142 | dev->buff_cnt++; |
143 | ||
144 | if (dev->buff_cnt == dev->ts.nr_bufs) { | |
145 | dev->ts_state = SAA7134_TS_BUFF_DONE; | |
146 | /* dma: setup channel 5 (= TS) */ | |
147 | control = SAA7134_RS_CONTROL_BURST_16 | | |
148 | SAA7134_RS_CONTROL_ME | | |
149 | (buf->pt->dma >> 12); | |
150 | ||
151 | saa_writeb(SAA7134_TS_DMA0, (lines - 1) & 0xff); | |
152 | saa_writeb(SAA7134_TS_DMA1, ((lines - 1) >> 8) & 0xff); | |
153 | /* TSNOPIT=0, TSCOLAP=0 */ | |
154 | saa_writeb(SAA7134_TS_DMA2, (((lines - 1) >> 16) & 0x3f) | 0x00); | |
155 | saa_writel(SAA7134_RS_PITCH(5), TS_PACKET_SIZE); | |
156 | saa_writel(SAA7134_RS_CONTROL(5), control); | |
157 | } | |
3aa4f48a | 158 | |
0fc0686e | 159 | buf->vb.state = VIDEOBUF_PREPARED; |
1da177e4 LT |
160 | buf->activate = buffer_activate; |
161 | buf->vb.field = field; | |
162 | return 0; | |
163 | ||
164 | oops: | |
c7b0ac05 | 165 | saa7134_dma_free(q,buf); |
1da177e4 LT |
166 | return err; |
167 | } | |
168 | ||
169 | static int | |
170 | buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) | |
171 | { | |
172 | struct saa7134_dev *dev = q->priv_data; | |
173 | ||
174 | *size = TS_PACKET_SIZE * dev->ts.nr_packets; | |
175 | if (0 == *count) | |
176 | *count = dev->ts.nr_bufs; | |
177 | *count = saa7134_buffer_count(*size,*count); | |
92c36147 DB |
178 | dev->buff_cnt = 0; |
179 | dev->ts_state = SAA7134_TS_STOPPED; | |
1da177e4 LT |
180 | return 0; |
181 | } | |
182 | ||
183 | static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
184 | { | |
185 | struct saa7134_dev *dev = q->priv_data; | |
186 | struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb); | |
187 | ||
188 | saa7134_buffer_queue(dev,&dev->ts_q,buf); | |
189 | } | |
190 | ||
191 | static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
192 | { | |
1da177e4 | 193 | struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb); |
92c36147 | 194 | struct saa7134_dev *dev = q->priv_data; |
1da177e4 | 195 | |
92c36147 DB |
196 | if (dev->ts_state == SAA7134_TS_STARTED) { |
197 | /* Stop TS transport */ | |
198 | saa_writeb(SAA7134_TS_PARALLEL, 0x6c); | |
199 | dev->ts_state = SAA7134_TS_STOPPED; | |
200 | } | |
c7b0ac05 | 201 | saa7134_dma_free(q,buf); |
1da177e4 LT |
202 | } |
203 | ||
204 | struct videobuf_queue_ops saa7134_ts_qops = { | |
205 | .buf_setup = buffer_setup, | |
206 | .buf_prepare = buffer_prepare, | |
207 | .buf_queue = buffer_queue, | |
208 | .buf_release = buffer_release, | |
209 | }; | |
210 | EXPORT_SYMBOL_GPL(saa7134_ts_qops); | |
211 | ||
212 | /* ----------------------------------------------------------- */ | |
213 | /* exported stuff */ | |
214 | ||
3aa4f48a | 215 | static unsigned int tsbufs = 8; |
1da177e4 LT |
216 | module_param(tsbufs, int, 0444); |
217 | MODULE_PARM_DESC(tsbufs,"number of ts buffers, range 2-32"); | |
218 | ||
3aa4f48a | 219 | static unsigned int ts_nr_packets = 64; |
1da177e4 LT |
220 | module_param(ts_nr_packets, int, 0444); |
221 | MODULE_PARM_DESC(ts_nr_packets,"size of a ts buffers (in ts packets)"); | |
222 | ||
cb71201f ML |
223 | int saa7134_ts_init_hw(struct saa7134_dev *dev) |
224 | { | |
225 | /* deactivate TS softreset */ | |
226 | saa_writeb(SAA7134_TS_SERIAL1, 0x00); | |
227 | /* TSSOP high active, TSVAL high active, TSLOCK ignored */ | |
92c36147 | 228 | saa_writeb(SAA7134_TS_PARALLEL, 0x6c); |
cb71201f ML |
229 | saa_writeb(SAA7134_TS_PARALLEL_SERIAL, (TS_PACKET_SIZE-1)); |
230 | saa_writeb(SAA7134_TS_DMA0, ((dev->ts.nr_packets-1)&0xff)); | |
231 | saa_writeb(SAA7134_TS_DMA1, (((dev->ts.nr_packets-1)>>8)&0xff)); | |
232 | /* TSNOPIT=0, TSCOLAP=0 */ | |
233 | saa_writeb(SAA7134_TS_DMA2, | |
234 | ((((dev->ts.nr_packets-1)>>16)&0x3f) | 0x00)); | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
1da177e4 LT |
239 | int saa7134_ts_init1(struct saa7134_dev *dev) |
240 | { | |
241 | /* sanitycheck insmod options */ | |
242 | if (tsbufs < 2) | |
243 | tsbufs = 2; | |
244 | if (tsbufs > VIDEO_MAX_FRAME) | |
245 | tsbufs = VIDEO_MAX_FRAME; | |
246 | if (ts_nr_packets < 4) | |
247 | ts_nr_packets = 4; | |
248 | if (ts_nr_packets > 312) | |
249 | ts_nr_packets = 312; | |
250 | dev->ts.nr_bufs = tsbufs; | |
251 | dev->ts.nr_packets = ts_nr_packets; | |
252 | ||
253 | INIT_LIST_HEAD(&dev->ts_q.queue); | |
254 | init_timer(&dev->ts_q.timeout); | |
255 | dev->ts_q.timeout.function = saa7134_buffer_timeout; | |
256 | dev->ts_q.timeout.data = (unsigned long)(&dev->ts_q); | |
257 | dev->ts_q.dev = dev; | |
258 | dev->ts_q.need_two = 1; | |
259 | saa7134_pgtable_alloc(dev->pci,&dev->ts.pt_ts); | |
260 | ||
261 | /* init TS hw */ | |
cb71201f | 262 | saa7134_ts_init_hw(dev); |
1da177e4 LT |
263 | |
264 | return 0; | |
265 | } | |
266 | ||
267 | int saa7134_ts_fini(struct saa7134_dev *dev) | |
268 | { | |
269 | saa7134_pgtable_free(dev->pci,&dev->ts.pt_ts); | |
270 | return 0; | |
271 | } | |
272 | ||
273 | ||
274 | void saa7134_irq_ts_done(struct saa7134_dev *dev, unsigned long status) | |
275 | { | |
276 | enum v4l2_field field; | |
277 | ||
278 | spin_lock(&dev->slock); | |
279 | if (dev->ts_q.curr) { | |
280 | field = dev->ts_q.curr->vb.field; | |
281 | if (field == V4L2_FIELD_TOP) { | |
3aa4f48a | 282 | if ((status & 0x100000) != 0x000000) |
1da177e4 LT |
283 | goto done; |
284 | } else { | |
3aa4f48a | 285 | if ((status & 0x100000) != 0x100000) |
1da177e4 LT |
286 | goto done; |
287 | } | |
0fc0686e | 288 | saa7134_buffer_finish(dev,&dev->ts_q,VIDEOBUF_DONE); |
1da177e4 LT |
289 | } |
290 | saa7134_buffer_next(dev,&dev->ts_q); | |
291 | ||
292 | done: | |
293 | spin_unlock(&dev->slock); | |
294 | } | |
295 | ||
296 | /* ----------------------------------------------------------- */ | |
297 | /* | |
298 | * Local variables: | |
299 | * c-basic-offset: 8 | |
300 | * End: | |
301 | */ |