V4L/DVB: cx88: Move I2C IR initialization
[linux-2.6.git] / drivers / media / video / cx88 / cx88-vbi.c
1 /*
2  */
3 #include <linux/kernel.h>
4 #include <linux/module.h>
5 #include <linux/init.h>
6
7 #include "cx88.h"
8
9 static unsigned int vbibufs = 4;
10 module_param(vbibufs,int,0644);
11 MODULE_PARM_DESC(vbibufs,"number of vbi buffers, range 2-32");
12
13 static unsigned int vbi_debug;
14 module_param(vbi_debug,int,0644);
15 MODULE_PARM_DESC(vbi_debug,"enable debug messages [vbi]");
16
17 #define dprintk(level,fmt, arg...)      if (vbi_debug >= level) \
18         printk(KERN_DEBUG "%s: " fmt, dev->core->name , ## arg)
19
20 /* ------------------------------------------------------------------ */
21
22 int cx8800_vbi_fmt (struct file *file, void *priv,
23                                         struct v4l2_format *f)
24 {
25         struct cx8800_fh  *fh   = priv;
26         struct cx8800_dev *dev  = fh->dev;
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 & V4L2_STD_525_60) {
35                 /* ntsc */
36                 f->fmt.vbi.sampling_rate = 28636363;
37                 f->fmt.vbi.start[0] = 10;
38                 f->fmt.vbi.start[1] = 273;
39
40         } else if (dev->core->tvnorm & 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         return 0;
47 }
48
49 static int cx8800_start_vbi_dma(struct cx8800_dev    *dev,
50                          struct cx88_dmaqueue *q,
51                          struct cx88_buffer   *buf)
52 {
53         struct cx88_core *core = dev->core;
54
55         /* setup fifo + format */
56         cx88_sram_channel_setup(dev->core, &cx88_sram_channels[SRAM_CH24],
57                                 buf->vb.width, buf->risc.dma);
58
59         cx_write(MO_VBOS_CONTROL, ( (1 << 18) |  // comb filter delay fixup
60                                     (1 << 15) |  // enable vbi capture
61                                     (1 << 11) ));
62
63         /* reset counter */
64         cx_write(MO_VBI_GPCNTRL, GP_COUNT_CONTROL_RESET);
65         q->count = 1;
66
67         /* enable irqs */
68         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_VIDINT);
69         cx_set(MO_VID_INTMSK, 0x0f0088);
70
71         /* enable capture */
72         cx_set(VID_CAPTURE_CONTROL,0x18);
73
74         /* start dma */
75         cx_set(MO_DEV_CNTRL2, (1<<5));
76         cx_set(MO_VID_DMACNTRL, 0x88);
77
78         return 0;
79 }
80
81 int cx8800_stop_vbi_dma(struct cx8800_dev *dev)
82 {
83         struct cx88_core *core = dev->core;
84
85         /* stop dma */
86         cx_clear(MO_VID_DMACNTRL, 0x88);
87
88         /* disable capture */
89         cx_clear(VID_CAPTURE_CONTROL,0x18);
90
91         /* disable irqs */
92         cx_clear(MO_PCI_INTMSK, PCI_INT_VIDINT);
93         cx_clear(MO_VID_INTMSK, 0x0f0088);
94         return 0;
95 }
96
97 int cx8800_restart_vbi_queue(struct cx8800_dev    *dev,
98                              struct cx88_dmaqueue *q)
99 {
100         struct cx88_buffer *buf;
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_entry(buf, &q->active, vb.queue)
110                 buf->count = q->count++;
111         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
112         return 0;
113 }
114
115 void cx8800_vbi_timeout(unsigned long data)
116 {
117         struct cx8800_dev *dev = (struct cx8800_dev*)data;
118         struct cx88_core *core = dev->core;
119         struct cx88_dmaqueue *q = &dev->vbiq;
120         struct cx88_buffer *buf;
121         unsigned long flags;
122
123         cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH24]);
124
125         cx_clear(MO_VID_DMACNTRL, 0x88);
126         cx_clear(VID_CAPTURE_CONTROL, 0x18);
127
128         spin_lock_irqsave(&dev->slock,flags);
129         while (!list_empty(&q->active)) {
130                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
131                 list_del(&buf->vb.queue);
132                 buf->vb.state = VIDEOBUF_ERROR;
133                 wake_up(&buf->vb.done);
134                 printk("%s/0: [%p/%d] timeout - dma=0x%08lx\n", dev->core->name,
135                        buf, buf->vb.i, (unsigned long)buf->risc.dma);
136         }
137         cx8800_restart_vbi_queue(dev,q);
138         spin_unlock_irqrestore(&dev->slock,flags);
139 }
140
141 /* ------------------------------------------------------------------ */
142
143 static int
144 vbi_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
145 {
146         *size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
147         if (0 == *count)
148                 *count = vbibufs;
149         if (*count < 2)
150                 *count = 2;
151         if (*count > 32)
152                 *count = 32;
153         return 0;
154 }
155
156 static int
157 vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
158             enum v4l2_field field)
159 {
160         struct cx8800_fh   *fh  = q->priv_data;
161         struct cx8800_dev  *dev = fh->dev;
162         struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
163         unsigned int size;
164         int rc;
165
166         size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
167         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
168                 return -EINVAL;
169
170         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
171                 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
172                 buf->vb.width  = VBI_LINE_LENGTH;
173                 buf->vb.height = VBI_LINE_COUNT;
174                 buf->vb.size   = size;
175                 buf->vb.field  = V4L2_FIELD_SEQ_TB;
176
177                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
178                         goto fail;
179                 cx88_risc_buffer(dev->pci, &buf->risc,
180                                  dma->sglist,
181                                  0, buf->vb.width * buf->vb.height,
182                                  buf->vb.width, 0,
183                                  buf->vb.height);
184         }
185         buf->vb.state = VIDEOBUF_PREPARED;
186         return 0;
187
188  fail:
189         cx88_free_buffer(q,buf);
190         return rc;
191 }
192
193 static void
194 vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
195 {
196         struct cx88_buffer    *buf = container_of(vb,struct cx88_buffer,vb);
197         struct cx88_buffer    *prev;
198         struct cx8800_fh      *fh   = vq->priv_data;
199         struct cx8800_dev     *dev  = fh->dev;
200         struct cx88_dmaqueue  *q    = &dev->vbiq;
201
202         /* add jump to stopper */
203         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
204         buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
205
206         if (list_empty(&q->active)) {
207                 list_add_tail(&buf->vb.queue,&q->active);
208                 cx8800_start_vbi_dma(dev, q, buf);
209                 buf->vb.state = VIDEOBUF_ACTIVE;
210                 buf->count    = q->count++;
211                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
212                 dprintk(2,"[%p/%d] vbi_queue - first active\n",
213                         buf, buf->vb.i);
214
215         } else {
216                 prev = list_entry(q->active.prev, struct cx88_buffer, vb.queue);
217                 list_add_tail(&buf->vb.queue,&q->active);
218                 buf->vb.state = VIDEOBUF_ACTIVE;
219                 buf->count    = q->count++;
220                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
221                 dprintk(2,"[%p/%d] buffer_queue - append to active\n",
222                         buf, buf->vb.i);
223         }
224 }
225
226 static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
227 {
228         struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
229
230         cx88_free_buffer(q,buf);
231 }
232
233 struct videobuf_queue_ops cx8800_vbi_qops = {
234         .buf_setup    = vbi_setup,
235         .buf_prepare  = vbi_prepare,
236         .buf_queue    = vbi_queue,
237         .buf_release  = vbi_release,
238 };
239
240 /* ------------------------------------------------------------------ */
241 /*
242  * Local variables:
243  * c-basic-offset: 8
244  * End:
245  */