Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
b45009b0 | 2 | * $Id: cx88-vbi.c,v 1.17 2005/06/12 04:19:19 mchehab Exp $ |
1da177e4 LT |
3 | */ |
4 | #include <linux/kernel.h> | |
5 | #include <linux/module.h> | |
6 | #include <linux/moduleparam.h> | |
7 | #include <linux/init.h> | |
8 | #include <linux/slab.h> | |
9 | ||
10 | #include "cx88.h" | |
11 | ||
12 | static unsigned int vbibufs = 4; | |
13 | module_param(vbibufs,int,0644); | |
14 | MODULE_PARM_DESC(vbibufs,"number of vbi buffers, range 2-32"); | |
15 | ||
16 | static unsigned int vbi_debug = 0; | |
17 | module_param(vbi_debug,int,0644); | |
18 | MODULE_PARM_DESC(vbi_debug,"enable debug messages [vbi]"); | |
19 | ||
20 | #define dprintk(level,fmt, arg...) if (vbi_debug >= level) \ | |
21 | printk(KERN_DEBUG "%s: " fmt, dev->core->name , ## arg) | |
22 | ||
23 | /* ------------------------------------------------------------------ */ | |
24 | ||
25 | void cx8800_vbi_fmt(struct cx8800_dev *dev, struct v4l2_format *f) | |
26 | { | |
27 | memset(&f->fmt.vbi,0,sizeof(f->fmt.vbi)); | |
28 | ||
29 | f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; | |
30 | f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; | |
31 | f->fmt.vbi.offset = 244; | |
32 | f->fmt.vbi.count[0] = VBI_LINE_COUNT; | |
33 | f->fmt.vbi.count[1] = VBI_LINE_COUNT; | |
34 | ||
35 | if (dev->core->tvnorm->id & V4L2_STD_525_60) { | |
36 | /* ntsc */ | |
37 | f->fmt.vbi.sampling_rate = 28636363; | |
38 | f->fmt.vbi.start[0] = 10 -1; | |
39 | f->fmt.vbi.start[1] = 273 -1; | |
40 | ||
41 | } else if (dev->core->tvnorm->id & V4L2_STD_625_50) { | |
42 | /* pal */ | |
43 | f->fmt.vbi.sampling_rate = 35468950; | |
44 | f->fmt.vbi.start[0] = 7 -1; | |
45 | f->fmt.vbi.start[1] = 319 -1; | |
46 | } | |
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 */ | |
68 | cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x01); | |
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, 0x000001); | |
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 | struct list_head *item; | |
102 | ||
103 | if (list_empty(&q->active)) | |
104 | return 0; | |
105 | ||
106 | buf = list_entry(q->active.next, struct cx88_buffer, vb.queue); | |
107 | dprintk(2,"restart_queue [%p/%d]: restart dma\n", | |
108 | buf, buf->vb.i); | |
109 | cx8800_start_vbi_dma(dev, q, buf); | |
110 | list_for_each(item,&q->active) { | |
111 | buf = list_entry(item, struct cx88_buffer, vb.queue); | |
112 | buf->count = q->count++; | |
113 | } | |
114 | mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT); | |
115 | return 0; | |
116 | } | |
117 | ||
118 | void cx8800_vbi_timeout(unsigned long data) | |
119 | { | |
120 | struct cx8800_dev *dev = (struct cx8800_dev*)data; | |
121 | struct cx88_core *core = dev->core; | |
122 | struct cx88_dmaqueue *q = &dev->vbiq; | |
123 | struct cx88_buffer *buf; | |
124 | unsigned long flags; | |
125 | ||
126 | cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH24]); | |
127 | ||
128 | cx_clear(MO_VID_DMACNTRL, 0x88); | |
129 | cx_clear(VID_CAPTURE_CONTROL, 0x18); | |
130 | ||
131 | spin_lock_irqsave(&dev->slock,flags); | |
132 | while (!list_empty(&q->active)) { | |
133 | buf = list_entry(q->active.next, struct cx88_buffer, vb.queue); | |
134 | list_del(&buf->vb.queue); | |
135 | buf->vb.state = STATE_ERROR; | |
136 | wake_up(&buf->vb.done); | |
137 | printk("%s/0: [%p/%d] timeout - dma=0x%08lx\n", dev->core->name, | |
138 | buf, buf->vb.i, (unsigned long)buf->risc.dma); | |
139 | } | |
140 | cx8800_restart_vbi_queue(dev,q); | |
141 | spin_unlock_irqrestore(&dev->slock,flags); | |
142 | } | |
143 | ||
144 | /* ------------------------------------------------------------------ */ | |
145 | ||
146 | static int | |
147 | vbi_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) | |
148 | { | |
149 | *size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2; | |
150 | if (0 == *count) | |
151 | *count = vbibufs; | |
152 | if (*count < 2) | |
153 | *count = 2; | |
154 | if (*count > 32) | |
155 | *count = 32; | |
156 | return 0; | |
157 | } | |
158 | ||
159 | static int | |
160 | vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb, | |
161 | enum v4l2_field field) | |
162 | { | |
163 | struct cx8800_fh *fh = q->priv_data; | |
164 | struct cx8800_dev *dev = fh->dev; | |
165 | struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb); | |
166 | unsigned int size; | |
167 | int rc; | |
168 | ||
169 | size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2; | |
170 | if (0 != buf->vb.baddr && buf->vb.bsize < size) | |
171 | return -EINVAL; | |
172 | ||
173 | if (STATE_NEEDS_INIT == buf->vb.state) { | |
174 | buf->vb.width = VBI_LINE_LENGTH; | |
175 | buf->vb.height = VBI_LINE_COUNT; | |
176 | buf->vb.size = size; | |
177 | buf->vb.field = V4L2_FIELD_SEQ_TB; | |
178 | ||
179 | if (0 != (rc = videobuf_iolock(dev->pci,&buf->vb,NULL))) | |
180 | goto fail; | |
181 | cx88_risc_buffer(dev->pci, &buf->risc, | |
182 | buf->vb.dma.sglist, | |
183 | 0, buf->vb.width * buf->vb.height, | |
184 | buf->vb.width, 0, | |
185 | buf->vb.height); | |
186 | } | |
187 | buf->vb.state = STATE_PREPARED; | |
188 | return 0; | |
189 | ||
190 | fail: | |
191 | cx88_free_buffer(dev->pci,buf); | |
192 | return rc; | |
193 | } | |
194 | ||
195 | static void | |
196 | vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
197 | { | |
198 | struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb); | |
199 | struct cx88_buffer *prev; | |
200 | struct cx8800_fh *fh = vq->priv_data; | |
201 | struct cx8800_dev *dev = fh->dev; | |
202 | struct cx88_dmaqueue *q = &dev->vbiq; | |
203 | ||
204 | /* add jump to stopper */ | |
205 | buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); | |
206 | buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma); | |
207 | ||
208 | if (list_empty(&q->active)) { | |
209 | list_add_tail(&buf->vb.queue,&q->active); | |
210 | cx8800_start_vbi_dma(dev, q, buf); | |
211 | buf->vb.state = STATE_ACTIVE; | |
212 | buf->count = q->count++; | |
213 | mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT); | |
214 | dprintk(2,"[%p/%d] vbi_queue - first active\n", | |
215 | buf, buf->vb.i); | |
216 | ||
217 | } else { | |
218 | prev = list_entry(q->active.prev, struct cx88_buffer, vb.queue); | |
219 | list_add_tail(&buf->vb.queue,&q->active); | |
220 | buf->vb.state = STATE_ACTIVE; | |
221 | buf->count = q->count++; | |
222 | prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); | |
223 | dprintk(2,"[%p/%d] buffer_queue - append to active\n", | |
224 | buf, buf->vb.i); | |
225 | } | |
226 | } | |
227 | ||
228 | static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
229 | { | |
230 | struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb); | |
231 | struct cx8800_fh *fh = q->priv_data; | |
232 | ||
233 | cx88_free_buffer(fh->dev->pci,buf); | |
234 | } | |
235 | ||
236 | struct videobuf_queue_ops cx8800_vbi_qops = { | |
237 | .buf_setup = vbi_setup, | |
238 | .buf_prepare = vbi_prepare, | |
239 | .buf_queue = vbi_queue, | |
240 | .buf_release = vbi_release, | |
241 | }; | |
242 | ||
243 | /* ------------------------------------------------------------------ */ | |
244 | /* | |
245 | * Local variables: | |
246 | * c-basic-offset: 8 | |
247 | * End: | |
248 | */ |