cx88-video.c

LINUX 2.6.17.4的源码

		if (c->id == V4L2_CID_AUDIO_MUTE) {
			for (i = 0; i < CX8800_CTLS; i++)
				if (cx8800_ctls[i].v.id == c->id)
					break;
			*c = cx8800_ctls[i].v;
		} else
			*c = no_ctl;
		return 0;
	}


	case VIDIOC_G_CTRL:
	case VIDIOC_S_CTRL:
	case VIDIOC_G_FREQUENCY:
	case VIDIOC_S_FREQUENCY:
		return video_do_ioctl(inode,file,cmd,arg);

	default:
		return v4l_compat_translate_ioctl(inode,file,cmd,arg,
						  radio_do_ioctl);
	}
	return 0;
};

static int radio_ioctl(struct inode *inode, struct file *file,
			unsigned int cmd, unsigned long arg)
{
	return video_usercopy(inode, file, cmd, arg, radio_do_ioctl);
};

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

static void cx8800_vid_timeout(unsigned long data)
{
	struct cx8800_dev *dev = (struct cx8800_dev*)data;
	struct cx88_core *core = dev->core;
	struct cx88_dmaqueue *q = &dev->vidq;
	struct cx88_buffer *buf;
	unsigned long flags;

	cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH21]);

	cx_clear(MO_VID_DMACNTRL, 0x11);
	cx_clear(VID_CAPTURE_CONTROL, 0x06);

	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", core->name,
		       buf, buf->vb.i, (unsigned long)buf->risc.dma);
	}
	restart_video_queue(dev,q);
	spin_unlock_irqrestore(&dev->slock,flags);
}

static char *cx88_vid_irqs[32] = {
	"y_risci1", "u_risci1", "v_risci1", "vbi_risc1",
	"y_risci2", "u_risci2", "v_risci2", "vbi_risc2",
	"y_oflow",  "u_oflow",  "v_oflow",  "vbi_oflow",
	"y_sync",   "u_sync",   "v_sync",   "vbi_sync",
	"opc_err",  "par_err",  "rip_err",  "pci_abort",
};

static void cx8800_vid_irq(struct cx8800_dev *dev)
{
	struct cx88_core *core = dev->core;
	u32 status, mask, count;

	status = cx_read(MO_VID_INTSTAT);
	mask   = cx_read(MO_VID_INTMSK);
	if (0 == (status & mask))
		return;
	cx_write(MO_VID_INTSTAT, status);
	if (irq_debug  ||  (status & mask & ~0xff))
		cx88_print_irqbits(core->name, "irq vid",
				   cx88_vid_irqs, status, mask);

	/* risc op code error */
	if (status & (1 << 16)) {
		printk(KERN_WARNING "%s/0: video risc op code error\n",core->name);
		cx_clear(MO_VID_DMACNTRL, 0x11);
		cx_clear(VID_CAPTURE_CONTROL, 0x06);
		cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH21]);
	}

	/* risc1 y */
	if (status & 0x01) {
		spin_lock(&dev->slock);
		count = cx_read(MO_VIDY_GPCNT);
		cx88_wakeup(core, &dev->vidq, count);
		spin_unlock(&dev->slock);
	}

	/* risc1 vbi */
	if (status & 0x08) {
		spin_lock(&dev->slock);
		count = cx_read(MO_VBI_GPCNT);
		cx88_wakeup(core, &dev->vbiq, count);
		spin_unlock(&dev->slock);
	}

	/* risc2 y */
	if (status & 0x10) {
		dprintk(2,"stopper video\n");
		spin_lock(&dev->slock);
		restart_video_queue(dev,&dev->vidq);
		spin_unlock(&dev->slock);
	}

	/* risc2 vbi */
	if (status & 0x80) {
		dprintk(2,"stopper vbi\n");
		spin_lock(&dev->slock);
		cx8800_restart_vbi_queue(dev,&dev->vbiq);
		spin_unlock(&dev->slock);
	}
}

static irqreturn_t cx8800_irq(int irq, void *dev_id, struct pt_regs *regs)
{
	struct cx8800_dev *dev = dev_id;
	struct cx88_core *core = dev->core;
	u32 status;
	int loop, handled = 0;

	for (loop = 0; loop < 10; loop++) {
		status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x01);
		if (0 == status)
			goto out;
		cx_write(MO_PCI_INTSTAT, status);
		handled = 1;

		if (status & core->pci_irqmask)
			cx88_core_irq(core,status);
		if (status & 0x01)
			cx8800_vid_irq(dev);
	};
	if (10 == loop) {
		printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
		       core->name);
		cx_write(MO_PCI_INTMSK,0);
	}

 out:
	return IRQ_RETVAL(handled);
}

/* ----------------------------------------------------------- */
/* exported stuff                                              */

static struct file_operations video_fops =
{
	.owner	       = THIS_MODULE,
	.open	       = video_open,
	.release       = video_release,
	.read	       = video_read,
	.poll          = video_poll,
	.mmap	       = video_mmap,
	.ioctl	       = video_ioctl,
	.compat_ioctl  = v4l_compat_ioctl32,
	.llseek        = no_llseek,
};

static struct video_device cx8800_video_template =
{
	.name          = "cx8800-video",
	.type          = VID_TYPE_CAPTURE|VID_TYPE_TUNER|VID_TYPE_SCALES,
	.hardware      = 0,
	.fops          = &video_fops,
	.minor         = -1,
};

static struct video_device cx8800_vbi_template =
{
	.name          = "cx8800-vbi",
	.type          = VID_TYPE_TELETEXT|VID_TYPE_TUNER,
	.hardware      = 0,
	.fops          = &video_fops,
	.minor         = -1,
};

static struct file_operations radio_fops =
{
	.owner         = THIS_MODULE,
	.open          = video_open,
	.release       = video_release,
	.ioctl         = radio_ioctl,
	.compat_ioctl  = v4l_compat_ioctl32,
	.llseek        = no_llseek,
};

static struct video_device cx8800_radio_template =
{
	.name          = "cx8800-radio",
	.type          = VID_TYPE_TUNER,
	.hardware      = 0,
	.fops          = &radio_fops,
	.minor         = -1,
};

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

static void cx8800_unregister_video(struct cx8800_dev *dev)
{
	if (dev->radio_dev) {
		if (-1 != dev->radio_dev->minor)
			video_unregister_device(dev->radio_dev);
		else
			video_device_release(dev->radio_dev);
		dev->radio_dev = NULL;
	}
	if (dev->vbi_dev) {
		if (-1 != dev->vbi_dev->minor)
			video_unregister_device(dev->vbi_dev);
		else
			video_device_release(dev->vbi_dev);
		dev->vbi_dev = NULL;
	}
	if (dev->video_dev) {
		if (-1 != dev->video_dev->minor)
			video_unregister_device(dev->video_dev);
		else
			video_device_release(dev->video_dev);
		dev->video_dev = NULL;
	}
}

static int __devinit cx8800_initdev(struct pci_dev *pci_dev,
				    const struct pci_device_id *pci_id)
{
	struct cx8800_dev *dev;
	struct cx88_core *core;
	int err;

	dev = kzalloc(sizeof(*dev),GFP_KERNEL);
	if (NULL == dev)
		return -ENOMEM;

	/* pci init */
	dev->pci = pci_dev;
	if (pci_enable_device(pci_dev)) {
		err = -EIO;
		goto fail_free;
	}
	core = cx88_core_get(dev->pci);
	if (NULL == core) {
		err = -EINVAL;
		goto fail_free;
	}
	dev->core = core;

	/* print pci info */
	pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &dev->pci_rev);
	pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER,  &dev->pci_lat);
	printk(KERN_INFO "%s/0: found at %s, rev: %d, irq: %d, "
	       "latency: %d, mmio: 0x%lx\n", core->name,
	       pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
	       dev->pci_lat,pci_resource_start(pci_dev,0));

	pci_set_master(pci_dev);
	if (!pci_dma_supported(pci_dev,0xffffffff)) {
		printk("%s/0: Oops: no 32bit PCI DMA ???\n",core->name);
		err = -EIO;
		goto fail_core;
	}

	/* initialize driver struct */
	spin_lock_init(&dev->slock);
	core->tvnorm = tvnorms;

	/* init video dma queues */
	INIT_LIST_HEAD(&dev->vidq.active);
	INIT_LIST_HEAD(&dev->vidq.queued);
	dev->vidq.timeout.function = cx8800_vid_timeout;
	dev->vidq.timeout.data     = (unsigned long)dev;
	init_timer(&dev->vidq.timeout);
	cx88_risc_stopper(dev->pci,&dev->vidq.stopper,
			  MO_VID_DMACNTRL,0x11,0x00);

	/* init vbi dma queues */
	INIT_LIST_HEAD(&dev->vbiq.active);
	INIT_LIST_HEAD(&dev->vbiq.queued);
	dev->vbiq.timeout.function = cx8800_vbi_timeout;
	dev->vbiq.timeout.data     = (unsigned long)dev;
	init_timer(&dev->vbiq.timeout);
	cx88_risc_stopper(dev->pci,&dev->vbiq.stopper,
			  MO_VID_DMACNTRL,0x88,0x00);

	/* get irq */
	err = request_irq(pci_dev->irq, cx8800_irq,
			  SA_SHIRQ | SA_INTERRUPT, core->name, dev);
	if (err < 0) {
		printk(KERN_ERR "%s: can't get IRQ %d\n",
		       core->name,pci_dev->irq);
		goto fail_core;
	}
	cx_set(MO_PCI_INTMSK, core->pci_irqmask);

	/* load and configure helper modules */
	if (TUNER_ABSENT != core->tuner_type)
		request_module("tuner");
	if (core->tda9887_conf)
		request_module("tda9887");

	/* register v4l devices */
	dev->video_dev = cx88_vdev_init(core,dev->pci,
					&cx8800_video_template,"video");
	err = video_register_device(dev->video_dev,VFL_TYPE_GRABBER,
				    video_nr[core->nr]);
	if (err < 0) {
		printk(KERN_INFO "%s: can't register video device\n",
		       core->name);
		goto fail_unreg;
	}
	printk(KERN_INFO "%s/0: registered device video%d [v4l2]\n",
	       core->name,dev->video_dev->minor & 0x1f);

	dev->vbi_dev = cx88_vdev_init(core,dev->pci,&cx8800_vbi_template,"vbi");
	err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
				    vbi_nr[core->nr]);
	if (err < 0) {
		printk(KERN_INFO "%s/0: can't register vbi device\n",
		       core->name);
		goto fail_unreg;
	}
	printk(KERN_INFO "%s/0: registered device vbi%d\n",
	       core->name,dev->vbi_dev->minor & 0x1f);

	if (core->has_radio) {
		dev->radio_dev = cx88_vdev_init(core,dev->pci,
						&cx8800_radio_template,"radio");
		err = video_register_device(dev->radio_dev,VFL_TYPE_RADIO,
					    radio_nr[core->nr]);
		if (err < 0) {
			printk(KERN_INFO "%s/0: can't register radio device\n",
			       core->name);
			goto fail_unreg;
		}
		printk(KERN_INFO "%s/0: registered device radio%d\n",
		       core->name,dev->radio_dev->minor & 0x1f);
	}

	/* everything worked */
	list_add_tail(&dev->devlist,&cx8800_devlist);
	pci_set_drvdata(pci_dev,dev);

	/* initial device configuration */
	mutex_lock(&core->lock);
	cx88_set_tvnorm(core,tvnorms);
	init_controls(core);
	video_mux(core,0);
	mutex_unlock(&core->lock);

	/* start tvaudio thread */
	if (core->tuner_type != TUNER_ABSENT)
		core->kthread = kthread_run(cx88_audio_thread, core, "cx88 tvaudio");
	return 0;

fail_unreg:
	cx8800_unregister_video(dev);
	free_irq(pci_dev->irq, dev);
fail_core:
	cx88_core_put(core,dev->pci);
fail_free:
	kfree(dev);
	return err;
}

static void __devexit cx8800_finidev(struct pci_dev *pci_dev)
{
	struct cx8800_dev *dev = pci_get_drvdata(pci_dev);
	struct cx88_core *core = dev->core;

	/* stop thread */
	if (core->kthread) {
		kthread_stop(core->kthread);
		core->kthread = NULL;
	}

	cx88_shutdown(core); /* FIXME */
	pci_disable_device(pci_dev);

	/* unregister stuff */

	free_irq(pci_dev->irq, dev);
	cx8800_unregister_video(dev);
	pci_set_drvdata(pci_dev, NULL);

	/* free memory */
	btcx_riscmem_free(dev->pci,&dev->vidq.stopper);
	list_del(&dev->devlist);
	cx88_core_put(core,dev->pci);
	kfree(dev);
}

static int cx8800_suspend(struct pci_dev *pci_dev, pm_message_t state)
{
	struct cx8800_dev *dev = pci_get_drvdata(pci_dev);
	struct cx88_core *core = dev->core;

	/* stop video+vbi capture */
	spin_lock(&dev->slock);
	if (!list_empty(&dev->vidq.active)) {
		printk("%s: suspend video\n", core->name);
		stop_video_dma(dev);
		del_timer(&dev->vidq.timeout);
	}
	if (!list_empty(&dev->vbiq.active)) {
		printk("%s: suspend vbi\n", core->name);
		cx8800_stop_vbi_dma(dev);
		del_timer(&dev->vbiq.timeout);
	}
	spin_unlock(&dev->slock);

	/* FIXME -- shutdown device */
	cx88_shutdown(core);

	pci_save_state(pci_dev);
	if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
		pci_disable_device(pci_dev);
		dev->state.disabled = 1;
	}
	return 0;
}

static int cx8800_resume(struct pci_dev *pci_dev)
{
	struct cx8800_dev *dev = pci_get_drvdata(pci_dev);
	struct cx88_core *core = dev->core;
	int err;

	if (dev->state.disabled) {
		err=pci_enable_device(pci_dev);
		if (err) {
			printk(KERN_ERR "%s: can't enable device\n",
						       core->name);
			return err;
		}

		dev->state.disabled = 0;
	}
	err= pci_set_power_state(pci_dev, PCI_D0);
	if (err) {
		printk(KERN_ERR "%s: can't enable device\n",
				       core->name);

		pci_disable_device(pci_dev);
		dev->state.disabled = 1;

		return err;
	}
	pci_restore_state(pci_dev);

	/* FIXME: re-initialize hardware */
	cx88_reset(core);

	/* restart video+vbi capture */
	spin_lock(&dev->slock);
	if (!list_empty(&dev->vidq.active)) {
		printk("%s: resume video\n", core->name);
		restart_video_queue(dev,&dev->vidq);
	}
	if (!list_empty(&dev->vbiq.active)) {
		printk("%s: resume vbi\n", core->name);
		cx8800_restart_vbi_queue(dev,&dev->vbiq);
	}
	spin_unlock(&dev->slock);

	return 0;
}

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

static struct pci_device_id cx8800_pci_tbl[] = {
	{
		.vendor       = 0x14f1,
		.device       = 0x8800,
		.subvendor    = PCI_ANY_ID,
		.subdevice    = PCI_ANY_ID,
	},{
		/* --- end of list --- */
	}
};
MODULE_DEVICE_TABLE(pci, cx8800_pci_tbl);

static struct pci_driver cx8800_pci_driver = {
	.name     = "cx8800",
	.id_table = cx8800_pci_tbl,
	.probe    = cx8800_initdev,
	.remove   = __devexit_p(cx8800_finidev),

	.suspend  = cx8800_suspend,
	.resume   = cx8800_resume,
};

static int cx8800_init(void)
{
	printk(KERN_INFO "cx2388x v4l2 driver version %d.%d.%d loaded\n",
	       (CX88_VERSION_CODE >> 16) & 0xff,
	       (CX88_VERSION_CODE >>  8) & 0xff,
	       CX88_VERSION_CODE & 0xff);
#ifdef SNAPSHOT
	printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
	       SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
#endif
	return pci_register_driver(&cx8800_pci_driver);
}

static void cx8800_fini(void)
{
	pci_unregister_driver(&cx8800_pci_driver);
}

module_init(cx8800_init);
module_exit(cx8800_fini);

EXPORT_SYMBOL(cx88_do_ioctl);

/* ----------------------------------------------------------- */
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
 */