[deliverable/linux.git] / drivers / media / video / cx88 / cx88-vbi.c

/*
 * $Id: cx88-vbi.c,v 1.16 2004/12/10 12:33:39 kraxel Exp $
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/slab.h>

#include "cx88.h"

static unsigned int vbibufs = 4;
module_param(vbibufs,int,0644);
MODULE_PARM_DESC(vbibufs,"number of vbi buffers, range 2-32");

static unsigned int vbi_debug = 0;
module_param(vbi_debug,int,0644);
MODULE_PARM_DESC(vbi_debug,"enable debug messages [vbi]");

#define dprintk(level,fmt, arg...)	if (vbi_debug >= level) \
	printk(KERN_DEBUG "%s: " fmt, dev->core->name , ## arg)

/* ------------------------------------------------------------------ */

void cx8800_vbi_fmt(struct cx8800_dev *dev, struct v4l2_format *f)
{
	memset(&f->fmt.vbi,0,sizeof(f->fmt.vbi));

	f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
	f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
	f->fmt.vbi.offset = 244;
	f->fmt.vbi.count[0] = VBI_LINE_COUNT;
	f->fmt.vbi.count[1] = VBI_LINE_COUNT;

	if (dev->core->tvnorm->id & V4L2_STD_525_60) {
		/* ntsc */
		f->fmt.vbi.sampling_rate = 28636363;
		f->fmt.vbi.start[0] = 10 -1;
		f->fmt.vbi.start[1] = 273 -1;

	} else if (dev->core->tvnorm->id & V4L2_STD_625_50) {
		/* pal */
		f->fmt.vbi.sampling_rate = 35468950;
		f->fmt.vbi.start[0] = 7 -1;
		f->fmt.vbi.start[1] = 319 -1;
	}
}

static int cx8800_start_vbi_dma(struct cx8800_dev    *dev,
				struct cx88_dmaqueue *q,
				struct cx88_buffer   *buf)
{
	struct cx88_core *core = dev->core;

	/* setup fifo + format */
	cx88_sram_channel_setup(dev->core, &cx88_sram_channels[SRAM_CH24],
				buf->vb.width, buf->risc.dma);

	cx_write(MO_VBOS_CONTROL, ( (1 << 18) |  // comb filter delay fixup
				    (1 << 15) |  // enable vbi capture
				    (1 << 11) ));

	/* reset counter */
	cx_write(MO_VBI_GPCNTRL, GP_COUNT_CONTROL_RESET);
	q->count = 1;

	/* enable irqs */
	cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x01);
	cx_set(MO_VID_INTMSK, 0x0f0088);

	/* enable capture */
	cx_set(VID_CAPTURE_CONTROL,0x18);

	/* start dma */
	cx_set(MO_DEV_CNTRL2, (1<<5));
	cx_set(MO_VID_DMACNTRL, 0x88);

	return 0;
}

int cx8800_stop_vbi_dma(struct cx8800_dev *dev)
{
	struct cx88_core *core = dev->core;

	/* stop dma */
	cx_clear(MO_VID_DMACNTRL, 0x88);

	/* disable capture */
	cx_clear(VID_CAPTURE_CONTROL,0x18);

	/* disable irqs */
	cx_clear(MO_PCI_INTMSK, 0x000001);
	cx_clear(MO_VID_INTMSK, 0x0f0088);
	return 0;
}

int cx8800_restart_vbi_queue(struct cx8800_dev    *dev,
			     struct cx88_dmaqueue *q)
{
	struct cx88_buffer *buf;
	struct list_head *item;

	if (list_empty(&q->active))
		return 0;

	buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
	dprintk(2,"restart_queue [%p/%d]: restart dma\n",
		buf, buf->vb.i);
	cx8800_start_vbi_dma(dev, q, buf);
	list_for_each(item,&q->active) {
		buf = list_entry(item, struct cx88_buffer, vb.queue);
		buf->count = q->count++;
	}
	mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
	return 0;
}

void cx8800_vbi_timeout(unsigned long data)
{
	struct cx8800_dev *dev = (struct cx8800_dev*)data;
	struct cx88_core *core = dev->core;
	struct cx88_dmaqueue *q = &dev->vbiq;
	struct cx88_buffer *buf;
	unsigned long flags;

	cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH24]);

	cx_clear(MO_VID_DMACNTRL, 0x88);
	cx_clear(VID_CAPTURE_CONTROL, 0x18);

	spin_lock_irqsave(&dev->slock,flags);
	while (!list_empty(&q->active)) {
		buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
		list_del(&buf->vb.queue);
		buf->vb.state = STATE_ERROR;
		wake_up(&buf->vb.done);
		printk("%s/0: [%p/%d] timeout - dma=0x%08lx\n", dev->core->name,
		       buf, buf->vb.i, (unsigned long)buf->risc.dma);
	}
	cx8800_restart_vbi_queue(dev,q);
	spin_unlock_irqrestore(&dev->slock,flags);
}

/* ------------------------------------------------------------------ */

static int
vbi_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
{
	*size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
	if (0 == *count)
		*count = vbibufs;
	if (*count < 2)
		*count = 2;
	if (*count > 32)
		*count = 32;
	return 0;
}

static int
vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
	    enum v4l2_field field)
{
	struct cx8800_fh   *fh  = q->priv_data;
	struct cx8800_dev  *dev = fh->dev;
	struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
	unsigned int size;
	int rc;

	size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
	if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
		return -EINVAL;

	if (STATE_NEEDS_INIT == buf->vb.state) {
		buf->vb.width  = VBI_LINE_LENGTH;
		buf->vb.height = VBI_LINE_COUNT;
		buf->vb.size   = size;
		buf->vb.field  = V4L2_FIELD_SEQ_TB;

		if (0 != (rc = videobuf_iolock(dev->pci,&buf->vb,NULL)))
			goto fail;
		cx88_risc_buffer(dev->pci, &buf->risc,
				 buf->vb.dma.sglist,
				 0, buf->vb.width * buf->vb.height,
				 buf->vb.width, 0,
				 buf->vb.height);
	}
	buf->vb.state = STATE_PREPARED;
	return 0;

 fail:
	cx88_free_buffer(dev->pci,buf);
	return rc;
}

static void
vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
	struct cx88_buffer    *buf = container_of(vb,struct cx88_buffer,vb);
	struct cx88_buffer    *prev;
	struct cx8800_fh      *fh   = vq->priv_data;
	struct cx8800_dev     *dev  = fh->dev;
	struct cx88_dmaqueue  *q    = &dev->vbiq;

	/* add jump to stopper */
	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
	buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);

	if (list_empty(&q->active)) {
		list_add_tail(&buf->vb.queue,&q->active);
		cx8800_start_vbi_dma(dev, q, buf);
		buf->vb.state = STATE_ACTIVE;
		buf->count    = q->count++;
		mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
		dprintk(2,"[%p/%d] vbi_queue - first active\n",
			buf, buf->vb.i);

	} else {
		prev = list_entry(q->active.prev, struct cx88_buffer, vb.queue);
		list_add_tail(&buf->vb.queue,&q->active);
		buf->vb.state = STATE_ACTIVE;
		buf->count    = q->count++;
		prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
		dprintk(2,"[%p/%d] buffer_queue - append to active\n",
			buf, buf->vb.i);
	}
}

static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
	struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
	struct cx8800_fh   *fh  = q->priv_data;

	cx88_free_buffer(fh->dev->pci,buf);
}

struct videobuf_queue_ops cx8800_vbi_qops = {
	.buf_setup    = vbi_setup,
	.buf_prepare  = vbi_prepare,
	.buf_queue    = vbi_queue,
	.buf_release  = vbi_release,
};

/* ------------------------------------------------------------------ */
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* $Id: cx88-vbi.c,v 1.16 2004/12/10 12:33:39 kraxel Exp $
	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 AB	49	static int cx8800_start_vbi_dma(struct cx8800_dev *dev,
	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	*/