drivers/media/video/cx88/cx88-vbi.c - kernel/msm - Gitiles

 /*
  * $Id: cx88-vbi.c,v 1.17 2005/06/12 04:19:19 mchehab 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:
  */
	/*
	* $Id: cx88-vbi.c,v 1.17 2005/06/12 04:19:19 mchehab 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:
	*/