[net-next-2.6.git] / drivers / media / video / cx88 / cx88-vbi.c

/*
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.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;
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)

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

int cx8800_vbi_fmt (struct file *file, void *priv,
					struct v4l2_format *f)
{
	struct cx8800_fh  *fh   = priv;
	struct cx8800_dev *dev  = fh->dev;

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

	} else if (dev->core->tvnorm & 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;
	}
	return 0;
}

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 | PCI_INT_VIDINT);
	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, PCI_INT_VIDINT);
	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;

	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_entry(buf, &q->active, 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 = VIDEOBUF_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 (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
		struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
		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(q,&buf->vb,NULL)))
			goto fail;
		cx88_risc_buffer(dev->pci, &buf->risc,
				 dma->sglist,
				 0, buf->vb.width * buf->vb.height,
				 buf->vb.width, 0,
				 buf->vb.height);
	}
	buf->vb.state = VIDEOBUF_PREPARED;
	return 0;

 fail:
	cx88_free_buffer(q,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 = VIDEOBUF_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 = VIDEOBUF_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);

	cx88_free_buffer(q,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	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,
8d87cb9f MCC	23	struct v4l2_format *f)
1da177e4	24	{
8d87cb9f MCC	25	struct cx8800_fh *fh = priv;
8d87cb9f MCC	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 */
1da177e4 LT	36	f->fmt.vbi.sampling_rate = 28636363;
419ac5d4 MS	37	f->fmt.vbi.start[0] = 10;
419ac5d4 MS	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	}
1da177e4 LT	48
408b664a	49	static int cx8800_start_vbi_dma(struct cx8800_dev *dev,
b45009b0 MCC	50	struct cx88_dmaqueue *q,
b45009b0 MCC	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;
1da177e4 LT	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
	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	*/