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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | */ |
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 | ||
11 | static unsigned int vbibufs = 4; | |
12 | module_param(vbibufs,int,0644); | |
13 | MODULE_PARM_DESC(vbibufs,"number of vbi buffers, range 2-32"); | |
14 | ||
15 | static unsigned int vbi_debug = 0; | |
16 | module_param(vbi_debug,int,0644); | |
17 | MODULE_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 | ||
24 | void 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; | |
419ac5d4 MS |
37 | f->fmt.vbi.start[0] = 10; |
38 | f->fmt.vbi.start[1] = 273; | |
1da177e4 LT |
39 | |
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 | ||
408b664a | 48 | static int cx8800_start_vbi_dma(struct cx8800_dev *dev, |
b45009b0 MCC |
49 | struct cx88_dmaqueue *q, |
50 | struct cx88_buffer *buf) | |
1da177e4 LT |
51 | { |
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 | ||
80 | int 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 | ||
96 | int 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 | ||
117 | void 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 | ||
145 | static int | |
146 | vbi_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 | ||
158 | static int | |
159 | vbi_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 | ||
c7b0ac05 | 178 | if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL))) |
1da177e4 LT |
179 | 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: | |
c7b0ac05 | 190 | cx88_free_buffer(q,buf); |
1da177e4 LT |
191 | return rc; |
192 | } | |
193 | ||
194 | static void | |
195 | vbi_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 | ||
227 | static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
228 | { | |
229 | struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb); | |
1da177e4 | 230 | |
c7b0ac05 | 231 | cx88_free_buffer(q,buf); |
1da177e4 LT |
232 | } |
233 | ||
234 | struct 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 | */ |