blob: aa2a69770098cf48b085d9f35c79f154ec20c9b6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 */
3#include <linux/kernel.h>
4#include <linux/module.h>
5#include <linux/moduleparam.h>
6#include <linux/init.h>
7#include <linux/slab.h>
8
9#include "cx88.h"
10
11static unsigned int vbibufs = 4;
12module_param(vbibufs,int,0644);
13MODULE_PARM_DESC(vbibufs,"number of vbi buffers, range 2-32");
14
15static unsigned int vbi_debug = 0;
16module_param(vbi_debug,int,0644);
17MODULE_PARM_DESC(vbi_debug,"enable debug messages [vbi]");
18
19#define dprintk(level,fmt, arg...) if (vbi_debug >= level) \
20 printk(KERN_DEBUG "%s: " fmt, dev->core->name , ## arg)
21
22/* ------------------------------------------------------------------ */
23
24void cx8800_vbi_fmt(struct cx8800_dev *dev, struct v4l2_format *f)
25{
26 memset(&f->fmt.vbi,0,sizeof(f->fmt.vbi));
27
28 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
29 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
30 f->fmt.vbi.offset = 244;
31 f->fmt.vbi.count[0] = VBI_LINE_COUNT;
32 f->fmt.vbi.count[1] = VBI_LINE_COUNT;
33
34 if (dev->core->tvnorm->id & V4L2_STD_525_60) {
35 /* ntsc */
36 f->fmt.vbi.sampling_rate = 28636363;
Michael Schimek419ac5d2006-05-22 10:32:11 -030037 f->fmt.vbi.start[0] = 10;
38 f->fmt.vbi.start[1] = 273;
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
40 } else if (dev->core->tvnorm->id & V4L2_STD_625_50) {
41 /* pal */
42 f->fmt.vbi.sampling_rate = 35468950;
43 f->fmt.vbi.start[0] = 7 -1;
44 f->fmt.vbi.start[1] = 319 -1;
45 }
46}
47
Adrian Bunk408b6642005-05-01 08:59:29 -070048static int cx8800_start_vbi_dma(struct cx8800_dev *dev,
Mauro Carvalho Chehabb45009b2005-06-23 22:05:03 -070049 struct cx88_dmaqueue *q,
50 struct cx88_buffer *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070051{
52 struct cx88_core *core = dev->core;
53
54 /* setup fifo + format */
55 cx88_sram_channel_setup(dev->core, &cx88_sram_channels[SRAM_CH24],
56 buf->vb.width, buf->risc.dma);
57
58 cx_write(MO_VBOS_CONTROL, ( (1 << 18) | // comb filter delay fixup
59 (1 << 15) | // enable vbi capture
60 (1 << 11) ));
61
62 /* reset counter */
63 cx_write(MO_VBI_GPCNTRL, GP_COUNT_CONTROL_RESET);
64 q->count = 1;
65
66 /* enable irqs */
67 cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x01);
68 cx_set(MO_VID_INTMSK, 0x0f0088);
69
70 /* enable capture */
71 cx_set(VID_CAPTURE_CONTROL,0x18);
72
73 /* start dma */
74 cx_set(MO_DEV_CNTRL2, (1<<5));
75 cx_set(MO_VID_DMACNTRL, 0x88);
76
77 return 0;
78}
79
80int cx8800_stop_vbi_dma(struct cx8800_dev *dev)
81{
82 struct cx88_core *core = dev->core;
83
84 /* stop dma */
85 cx_clear(MO_VID_DMACNTRL, 0x88);
86
87 /* disable capture */
88 cx_clear(VID_CAPTURE_CONTROL,0x18);
89
90 /* disable irqs */
91 cx_clear(MO_PCI_INTMSK, 0x000001);
92 cx_clear(MO_VID_INTMSK, 0x0f0088);
93 return 0;
94}
95
96int cx8800_restart_vbi_queue(struct cx8800_dev *dev,
97 struct cx88_dmaqueue *q)
98{
99 struct cx88_buffer *buf;
100 struct list_head *item;
101
102 if (list_empty(&q->active))
103 return 0;
104
105 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
106 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
107 buf, buf->vb.i);
108 cx8800_start_vbi_dma(dev, q, buf);
109 list_for_each(item,&q->active) {
110 buf = list_entry(item, struct cx88_buffer, vb.queue);
111 buf->count = q->count++;
112 }
113 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
114 return 0;
115}
116
117void cx8800_vbi_timeout(unsigned long data)
118{
119 struct cx8800_dev *dev = (struct cx8800_dev*)data;
120 struct cx88_core *core = dev->core;
121 struct cx88_dmaqueue *q = &dev->vbiq;
122 struct cx88_buffer *buf;
123 unsigned long flags;
124
125 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH24]);
126
127 cx_clear(MO_VID_DMACNTRL, 0x88);
128 cx_clear(VID_CAPTURE_CONTROL, 0x18);
129
130 spin_lock_irqsave(&dev->slock,flags);
131 while (!list_empty(&q->active)) {
132 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
133 list_del(&buf->vb.queue);
134 buf->vb.state = STATE_ERROR;
135 wake_up(&buf->vb.done);
136 printk("%s/0: [%p/%d] timeout - dma=0x%08lx\n", dev->core->name,
137 buf, buf->vb.i, (unsigned long)buf->risc.dma);
138 }
139 cx8800_restart_vbi_queue(dev,q);
140 spin_unlock_irqrestore(&dev->slock,flags);
141}
142
143/* ------------------------------------------------------------------ */
144
145static int
146vbi_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
147{
148 *size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
149 if (0 == *count)
150 *count = vbibufs;
151 if (*count < 2)
152 *count = 2;
153 if (*count > 32)
154 *count = 32;
155 return 0;
156}
157
158static int
159vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
160 enum v4l2_field field)
161{
162 struct cx8800_fh *fh = q->priv_data;
163 struct cx8800_dev *dev = fh->dev;
164 struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
165 unsigned int size;
166 int rc;
167
168 size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
169 if (0 != buf->vb.baddr && buf->vb.bsize < size)
170 return -EINVAL;
171
172 if (STATE_NEEDS_INIT == buf->vb.state) {
173 buf->vb.width = VBI_LINE_LENGTH;
174 buf->vb.height = VBI_LINE_COUNT;
175 buf->vb.size = size;
176 buf->vb.field = V4L2_FIELD_SEQ_TB;
177
Mauro Carvalho Chehabc7b0ac02006-03-10 12:29:15 -0300178 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 goto fail;
180 cx88_risc_buffer(dev->pci, &buf->risc,
181 buf->vb.dma.sglist,
182 0, buf->vb.width * buf->vb.height,
183 buf->vb.width, 0,
184 buf->vb.height);
185 }
186 buf->vb.state = STATE_PREPARED;
187 return 0;
188
189 fail:
Mauro Carvalho Chehabc7b0ac02006-03-10 12:29:15 -0300190 cx88_free_buffer(q,buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 return rc;
192}
193
194static void
195vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
196{
197 struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
198 struct cx88_buffer *prev;
199 struct cx8800_fh *fh = vq->priv_data;
200 struct cx8800_dev *dev = fh->dev;
201 struct cx88_dmaqueue *q = &dev->vbiq;
202
203 /* add jump to stopper */
204 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
205 buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
206
207 if (list_empty(&q->active)) {
208 list_add_tail(&buf->vb.queue,&q->active);
209 cx8800_start_vbi_dma(dev, q, buf);
210 buf->vb.state = STATE_ACTIVE;
211 buf->count = q->count++;
212 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
213 dprintk(2,"[%p/%d] vbi_queue - first active\n",
214 buf, buf->vb.i);
215
216 } else {
217 prev = list_entry(q->active.prev, struct cx88_buffer, vb.queue);
218 list_add_tail(&buf->vb.queue,&q->active);
219 buf->vb.state = STATE_ACTIVE;
220 buf->count = q->count++;
221 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
222 dprintk(2,"[%p/%d] buffer_queue - append to active\n",
223 buf, buf->vb.i);
224 }
225}
226
227static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
228{
229 struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230
Mauro Carvalho Chehabc7b0ac02006-03-10 12:29:15 -0300231 cx88_free_buffer(q,buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232}
233
234struct videobuf_queue_ops cx8800_vbi_qops = {
235 .buf_setup = vbi_setup,
236 .buf_prepare = vbi_prepare,
237 .buf_queue = vbi_queue,
238 .buf_release = vbi_release,
239};
240
241/* ------------------------------------------------------------------ */
242/*
243 * Local variables:
244 * c-basic-offset: 8
245 * End:
246 */