Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | */ |
3 | #include <linux/kernel.h> | |
4 | #include <linux/module.h> | |
1da177e4 | 5 | #include <linux/init.h> |
1da177e4 LT |
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 | ||
ff699e6b | 13 | static unsigned int vbi_debug; |
1da177e4 LT |
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 | ||
8d87cb9f MCC |
22 | int cx8800_vbi_fmt (struct file *file, void *priv, |
23 | struct v4l2_format *f) | |
1da177e4 | 24 | { |
8d87cb9f MCC |
25 | struct cx8800_fh *fh = priv; |
26 | struct cx8800_dev *dev = fh->dev; | |
1da177e4 LT |
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 | ||
63ab1bdc | 34 | if (dev->core->tvnorm & V4L2_STD_525_60) { |
1da177e4 LT |
35 | /* ntsc */ |
36 | f->fmt.vbi.sampling_rate = 28636363; | |
419ac5d4 MS |
37 | f->fmt.vbi.start[0] = 10; |
38 | f->fmt.vbi.start[1] = 273; | |
1da177e4 | 39 | |
63ab1bdc | 40 | } else if (dev->core->tvnorm & V4L2_STD_625_50) { |
1da177e4 LT |
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 | } | |
8d87cb9f | 46 | return 0; |
1da177e4 LT |
47 | } |
48 | ||
408b664a | 49 | static int cx8800_start_vbi_dma(struct cx8800_dev *dev, |
b45009b0 MCC |
50 | struct cx88_dmaqueue *q, |
51 | struct cx88_buffer *buf) | |
1da177e4 LT |
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 */ | |
8ddac9ee | 68 | cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_VIDINT); |
1da177e4 LT |
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 */ | |
8ddac9ee | 92 | cx_clear(MO_PCI_INTMSK, PCI_INT_VIDINT); |
1da177e4 LT |
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; | |
1da177e4 LT |
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); | |
8bb629e2 | 109 | list_for_each_entry(buf, &q->active, vb.queue) |
1da177e4 | 110 | buf->count = q->count++; |
1da177e4 LT |
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); | |
0fc0686e | 132 | buf->vb.state = VIDEOBUF_ERROR; |
1da177e4 LT |
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 | ||
0fc0686e | 170 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
c1accaa2 | 171 | struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); |
1da177e4 LT |
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 | ||
c7b0ac05 | 177 | if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL))) |
1da177e4 LT |
178 | goto fail; |
179 | cx88_risc_buffer(dev->pci, &buf->risc, | |
c1accaa2 | 180 | dma->sglist, |
1da177e4 LT |
181 | 0, buf->vb.width * buf->vb.height, |
182 | buf->vb.width, 0, | |
183 | buf->vb.height); | |
184 | } | |
0fc0686e | 185 | buf->vb.state = VIDEOBUF_PREPARED; |
1da177e4 LT |
186 | return 0; |
187 | ||
188 | fail: | |
c7b0ac05 | 189 | cx88_free_buffer(q,buf); |
1da177e4 LT |
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); | |
0fc0686e | 209 | buf->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 LT |
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); | |
0fc0686e | 218 | buf->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 LT |
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); | |
1da177e4 | 229 | |
c7b0ac05 | 230 | cx88_free_buffer(q,buf); |
1da177e4 LT |
231 | } |
232 | ||
2e4e98e7 | 233 | const struct videobuf_queue_ops cx8800_vbi_qops = { |
1da177e4 LT |
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 | */ |