[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 <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)

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

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 = 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) {
		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 = STATE_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 = 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);

	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 LT	5	#include <linux/init.h>
	6	#include <linux/slab.h>
	7
	8	#include "cx88.h"
	9
	10	static unsigned int vbibufs = 4;
	11	module_param(vbibufs,int,0644);
	12	MODULE_PARM_DESC(vbibufs,"number of vbi buffers, range 2-32");
	13
	14	static unsigned int vbi_debug = 0;
	15	module_param(vbi_debug,int,0644);
	16	MODULE_PARM_DESC(vbi_debug,"enable debug messages [vbi]");
	17
	18	#define dprintk(level,fmt, arg...) if (vbi_debug >= level) \
	19	printk(KERN_DEBUG "%s: " fmt, dev->core->name , ## arg)
	20
	21	/* ------------------------------------------------------------------ */
	22
8d87cb9f MCC	23	int cx8800_vbi_fmt (struct file file, void priv,
8d87cb9f MCC	24	struct v4l2_format *f)
1da177e4	25	{
8d87cb9f MCC	26	struct cx8800_fh *fh = priv;
8d87cb9f MCC	27	struct cx8800_dev *dev = fh->dev;
1da177e4 LT	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
63ab1bdc	35	if (dev->core->tvnorm & V4L2_STD_525_60) {
1da177e4 LT	36	/* ntsc */
1da177e4 LT	37	f->fmt.vbi.sampling_rate = 28636363;
419ac5d4 MS	38	f->fmt.vbi.start[0] = 10;
419ac5d4 MS	39	f->fmt.vbi.start[1] = 273;
1da177e4	40
63ab1bdc	41	} else if (dev->core->tvnorm & V4L2_STD_625_50) {
1da177e4 LT	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	}
8d87cb9f	47	return 0;
1da177e4 LT	48	}
1da177e4 LT	49
408b664a	50	static int cx8800_start_vbi_dma(struct cx8800_dev *dev,
b45009b0 MCC	51	struct cx88_dmaqueue *q,
b45009b0 MCC	52	struct cx88_buffer *buf)
1da177e4 LT	53	{
	54	struct cx88_core *core = dev->core;
	55
	56	/* setup fifo + format */
	57	cx88_sram_channel_setup(dev->core, &cx88_sram_channels[SRAM_CH24],
	58	buf->vb.width, buf->risc.dma);
	59
	60	cx_write(MO_VBOS_CONTROL, ( (1 << 18) \| // comb filter delay fixup
	61	(1 << 15) \| // enable vbi capture
	62	(1 << 11) ));
	63
	64	/* reset counter */
	65	cx_write(MO_VBI_GPCNTRL, GP_COUNT_CONTROL_RESET);
	66	q->count = 1;
	67
	68	/* enable irqs */
8ddac9ee	69	cx_set(MO_PCI_INTMSK, core->pci_irqmask \| PCI_INT_VIDINT);
1da177e4 LT	70	cx_set(MO_VID_INTMSK, 0x0f0088);
	71
	72	/* enable capture */
	73	cx_set(VID_CAPTURE_CONTROL,0x18);
	74
	75	/* start dma */
	76	cx_set(MO_DEV_CNTRL2, (1<<5));
	77	cx_set(MO_VID_DMACNTRL, 0x88);
	78
	79	return 0;
	80	}
	81
	82	int cx8800_stop_vbi_dma(struct cx8800_dev *dev)
	83	{
	84	struct cx88_core *core = dev->core;
	85
	86	/* stop dma */
	87	cx_clear(MO_VID_DMACNTRL, 0x88);
	88
	89	/* disable capture */
	90	cx_clear(VID_CAPTURE_CONTROL,0x18);
	91
	92	/* disable irqs */
8ddac9ee	93	cx_clear(MO_PCI_INTMSK, PCI_INT_VIDINT);
1da177e4 LT	94	cx_clear(MO_VID_INTMSK, 0x0f0088);
	95	return 0;
	96	}
	97
	98	int cx8800_restart_vbi_queue(struct cx8800_dev *dev,
	99	struct cx88_dmaqueue *q)
	100	{
	101	struct cx88_buffer *buf;
1da177e4 LT	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);
8bb629e2	110	list_for_each_entry(buf, &q->active, vb.queue)
1da177e4	111	buf->count = q->count++;
1da177e4 LT	112	mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
	113	return 0;
	114	}
	115
	116	void cx8800_vbi_timeout(unsigned long data)
	117	{
	118	struct cx8800_dev dev = (struct cx8800_dev)data;
	119	struct cx88_core *core = dev->core;
	120	struct cx88_dmaqueue *q = &dev->vbiq;
	121	struct cx88_buffer *buf;
	122	unsigned long flags;
	123
	124	cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH24]);
	125
	126	cx_clear(MO_VID_DMACNTRL, 0x88);
	127	cx_clear(VID_CAPTURE_CONTROL, 0x18);
	128
	129	spin_lock_irqsave(&dev->slock,flags);
	130	while (!list_empty(&q->active)) {
	131	buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
	132	list_del(&buf->vb.queue);
	133	buf->vb.state = STATE_ERROR;
	134	wake_up(&buf->vb.done);
	135	printk("%s/0: [%p/%d] timeout - dma=0x%08lx\n", dev->core->name,
	136	buf, buf->vb.i, (unsigned long)buf->risc.dma);
	137	}
	138	cx8800_restart_vbi_queue(dev,q);
	139	spin_unlock_irqrestore(&dev->slock,flags);
	140	}
	141
	142	/* ------------------------------------------------------------------ */
	143
	144	static int
	145	vbi_setup(struct videobuf_queue q, unsigned int count, unsigned int *size)
	146	{
	147	size = VBI_LINE_COUNT VBI_LINE_LENGTH * 2;
	148	if (0 == *count)
	149	*count = vbibufs;
	150	if (*count < 2)
	151	*count = 2;
	152	if (*count > 32)
	153	*count = 32;
	154	return 0;
	155	}
	156
	157	static int
	158	vbi_prepare(struct videobuf_queue q, struct videobuf_buffer vb,
	159	enum v4l2_field field)
	160	{
	161	struct cx8800_fh *fh = q->priv_data;
	162	struct cx8800_dev *dev = fh->dev;
	163	struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
	164	unsigned int size;
	165	int rc;
	166
	167	size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
	168	if (0 != buf->vb.baddr && buf->vb.bsize < size)
	169	return -EINVAL;
	170
	171	if (STATE_NEEDS_INIT == buf->vb.state) {
c1accaa2	172	struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
1da177e4 LT	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;
1da177e4 LT	180	cx88_risc_buffer(dev->pci, &buf->risc,
c1accaa2	181	dma->sglist,
1da177e4 LT	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	*/