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

/*
 */
#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)

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

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 | 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(q,&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(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>
	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
8d87cb9f MCC	24	int cx8800_vbi_fmt (struct file file, void priv,
8d87cb9f MCC	25	struct v4l2_format *f)
1da177e4	26	{
8d87cb9f MCC	27	struct cx8800_fh *fh = priv;
8d87cb9f MCC	28	struct cx8800_dev *dev = fh->dev;
1da177e4 LT	29
	30	f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
	31	f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
	32	f->fmt.vbi.offset = 244;
	33	f->fmt.vbi.count[0] = VBI_LINE_COUNT;
	34	f->fmt.vbi.count[1] = VBI_LINE_COUNT;
	35
63ab1bdc	36	if (dev->core->tvnorm & V4L2_STD_525_60) {
1da177e4 LT	37	/* ntsc */
1da177e4 LT	38	f->fmt.vbi.sampling_rate = 28636363;
419ac5d4 MS	39	f->fmt.vbi.start[0] = 10;
419ac5d4 MS	40	f->fmt.vbi.start[1] = 273;
1da177e4	41
63ab1bdc	42	} else if (dev->core->tvnorm & V4L2_STD_625_50) {
1da177e4 LT	43	/* pal */
	44	f->fmt.vbi.sampling_rate = 35468950;
	45	f->fmt.vbi.start[0] = 7 -1;
	46	f->fmt.vbi.start[1] = 319 -1;
	47	}
8d87cb9f	48	return 0;
1da177e4 LT	49	}
1da177e4 LT	50
408b664a	51	static int cx8800_start_vbi_dma(struct cx8800_dev *dev,
b45009b0 MCC	52	struct cx88_dmaqueue *q,
b45009b0 MCC	53	struct cx88_buffer *buf)
1da177e4 LT	54	{
	55	struct cx88_core *core = dev->core;
	56
	57	/* setup fifo + format */
	58	cx88_sram_channel_setup(dev->core, &cx88_sram_channels[SRAM_CH24],
	59	buf->vb.width, buf->risc.dma);
	60
	61	cx_write(MO_VBOS_CONTROL, ( (1 << 18) \| // comb filter delay fixup
	62	(1 << 15) \| // enable vbi capture
	63	(1 << 11) ));
	64
	65	/* reset counter */
	66	cx_write(MO_VBI_GPCNTRL, GP_COUNT_CONTROL_RESET);
	67	q->count = 1;
	68
	69	/* enable irqs */
	70	cx_set(MO_PCI_INTMSK, core->pci_irqmask \| 0x01);
	71	cx_set(MO_VID_INTMSK, 0x0f0088);
	72
	73	/* enable capture */
	74	cx_set(VID_CAPTURE_CONTROL,0x18);
	75
	76	/* start dma */
	77	cx_set(MO_DEV_CNTRL2, (1<<5));
	78	cx_set(MO_VID_DMACNTRL, 0x88);
	79
	80	return 0;
	81	}
	82
	83	int cx8800_stop_vbi_dma(struct cx8800_dev *dev)
	84	{
	85	struct cx88_core *core = dev->core;
	86
	87	/* stop dma */
	88	cx_clear(MO_VID_DMACNTRL, 0x88);
	89
	90	/* disable capture */
	91	cx_clear(VID_CAPTURE_CONTROL,0x18);
	92
	93	/* disable irqs */
	94	cx_clear(MO_PCI_INTMSK, 0x000001);
	95	cx_clear(MO_VID_INTMSK, 0x0f0088);
	96	return 0;
	97	}
	98
	99	int cx8800_restart_vbi_queue(struct cx8800_dev *dev,
	100	struct cx88_dmaqueue *q)
	101	{
	102	struct cx88_buffer *buf;
	103	struct list_head *item;
	104
	105	if (list_empty(&q->active))
	106	return 0;
	107
	108	buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
	109	dprintk(2,"restart_queue [%p/%d]: restart dma\n",
	110	buf, buf->vb.i);
	111	cx8800_start_vbi_dma(dev, q, buf);
	112	list_for_each(item,&q->active) {
	113	buf = list_entry(item, struct cx88_buffer, vb.queue);
	114	buf->count = q->count++;
	115	}
	116	mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
	117	return 0;
118	}
119
120	void cx8800_vbi_timeout(unsigned long data)
121	{
122	struct cx8800_dev dev = (struct cx8800_dev)data;
123	struct cx88_core *core = dev->core;
124	struct cx88_dmaqueue *q = &dev->vbiq;
125	struct cx88_buffer *buf;
126	unsigned long flags;
127
128	cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH24]);
129
130	cx_clear(MO_VID_DMACNTRL, 0x88);
131	cx_clear(VID_CAPTURE_CONTROL, 0x18);
132
133	spin_lock_irqsave(&dev->slock,flags);
134	while (!list_empty(&q->active)) {
135	buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
136	list_del(&buf->vb.queue);
137	buf->vb.state = STATE_ERROR;
138	wake_up(&buf->vb.done);
139	printk("%s/0: [%p/%d] timeout - dma=0x%08lx\n", dev->core->name,
140	buf, buf->vb.i, (unsigned long)buf->risc.dma);
141	}
142	cx8800_restart_vbi_queue(dev,q);
143	spin_unlock_irqrestore(&dev->slock,flags);
144	}
145
146	/* ------------------------------------------------------------------ */
147
148	static int
149	vbi_setup(struct videobuf_queue q, unsigned int count, unsigned int *size)
150	{
151	size = VBI_LINE_COUNT VBI_LINE_LENGTH * 2;
152	if (0 == *count)
153	*count = vbibufs;
154	if (*count < 2)
155	*count = 2;
156	if (*count > 32)
157	*count = 32;
158	return 0;
159	}
160
161	static int
162	vbi_prepare(struct videobuf_queue q, struct videobuf_buffer vb,
163	enum v4l2_field field)
164	{
165	struct cx8800_fh *fh = q->priv_data;
166	struct cx8800_dev *dev = fh->dev;
167	struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
168	unsigned int size;
169	int rc;
170
171	size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
172	if (0 != buf->vb.baddr && buf->vb.bsize < size)
173	return -EINVAL;
174
175	if (STATE_NEEDS_INIT == buf->vb.state) {
176	buf->vb.width = VBI_LINE_LENGTH;
177	buf->vb.height = VBI_LINE_COUNT;
178	buf->vb.size = size;
179	buf->vb.field = V4L2_FIELD_SEQ_TB;
180
c7b0ac05	181	if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
1da177e4 LT	182	goto fail;
	183	cx88_risc_buffer(dev->pci, &buf->risc,
	184	buf->vb.dma.sglist,
	185	0, buf->vb.width * buf->vb.height,
	186	buf->vb.width, 0,
	187	buf->vb.height);
	188	}
	189	buf->vb.state = STATE_PREPARED;
	190	return 0;
	191
	192	fail:
c7b0ac05	193	cx88_free_buffer(q,buf);
1da177e4 LT	194	return rc;
	195	}
	196
	197	static void
	198	vbi_queue(struct videobuf_queue vq, struct videobuf_buffer vb)
	199	{
	200	struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
	201	struct cx88_buffer *prev;
	202	struct cx8800_fh *fh = vq->priv_data;
	203	struct cx8800_dev *dev = fh->dev;
	204	struct cx88_dmaqueue *q = &dev->vbiq;
	205
	206	/* add jump to stopper */
	207	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP \| RISC_IRQ1 \| RISC_CNT_INC);
	208	buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
	209
	210	if (list_empty(&q->active)) {
	211	list_add_tail(&buf->vb.queue,&q->active);
	212	cx8800_start_vbi_dma(dev, q, buf);
	213	buf->vb.state = STATE_ACTIVE;
	214	buf->count = q->count++;
	215	mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
	216	dprintk(2,"[%p/%d] vbi_queue - first active\n",
	217	buf, buf->vb.i);
	218
	219	} else {
	220	prev = list_entry(q->active.prev, struct cx88_buffer, vb.queue);
	221	list_add_tail(&buf->vb.queue,&q->active);
	222	buf->vb.state = STATE_ACTIVE;
	223	buf->count = q->count++;
	224	prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
	225	dprintk(2,"[%p/%d] buffer_queue - append to active\n",
	226	buf, buf->vb.i);
	227	}
	228	}
	229
	230	static void vbi_release(struct videobuf_queue q, struct videobuf_buffer vb)
	231	{
	232	struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
1da177e4	233
c7b0ac05	234	cx88_free_buffer(q,buf);
1da177e4 LT	235	}
	236
	237	struct videobuf_queue_ops cx8800_vbi_qops = {
	238	.buf_setup = vbi_setup,
	239	.buf_prepare = vbi_prepare,
	240	.buf_queue = vbi_queue,
	241	.buf_release = vbi_release,
	242	};
	243
	244	/* ------------------------------------------------------------------ */
	245	/*
	246	* Local variables:
	247	* c-basic-offset: 8
	248	* End:
	249	*/