C++ (Cpp) vfc_memptr_reset Examples

Example #1

static int vfc_open(struct inode *inode, struct file *file) 
{
	struct vfc_dev *dev;

	spin_lock(&vfc_dev_lock);
	dev = vfc_get_dev_ptr(MINOR(inode->i_rdev));
	if (dev == NULL) {
		spin_unlock(&vfc_dev_lock);
		return -ENODEV;
	}
	if (dev->busy) {
		spin_unlock(&vfc_dev_lock);
		return -EBUSY;
	}

	dev->busy = 1;
	spin_unlock(&vfc_dev_lock);

	vfc_lock_device(dev);
	
	vfc_csr_init(dev);
	vfc_pcf8584_init(dev);
	vfc_init_i2c_bus(dev);
	vfc_saa9051_init(dev);
	vfc_memptr_reset(dev);
	vfc_captstat_reset(dev);
	
	vfc_unlock_device(dev);
	return 0;
}

Example #2

static int vfc_set_control_ioctl(struct inode *inode, struct file *file, 
			  struct vfc_dev *dev, unsigned long arg) 
{
	int setcmd, ret = 0;

	if (copy_from_user(&setcmd,(void *)arg,sizeof(unsigned int)))
		return -EFAULT;

	VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCSCTRL) arg=0x%x\n",
				dev->instance,setcmd));

	switch(setcmd) {
	case MEMPRST:
		vfc_lock_device(dev);
		vfc_memptr_reset(dev);
		vfc_unlock_device(dev);
		ret=0;
		break;
	case CAPTRCMD:
		vfc_capture_start(dev);
		vfc_capture_poll(dev);
		break;
	case DIAGMODE:
		if(capable(CAP_SYS_ADMIN)) {
			vfc_lock_device(dev);
			dev->control_reg |= VFC_CONTROL_DIAGMODE;
			sbus_writel(dev->control_reg, &dev->regs->control);
			vfc_unlock_device(dev);
			ret = 0;
		} else {
			ret = -EPERM; 
		}
		break;
	case NORMMODE:
		vfc_lock_device(dev);
		dev->control_reg &= ~VFC_CONTROL_DIAGMODE;
		sbus_writel(dev->control_reg, &dev->regs->control);
		vfc_unlock_device(dev);
		ret = 0;
		break;
	case CAPTRSTR:
		vfc_capture_start(dev);
		ret = 0;
		break;
	case CAPTRWAIT:
		vfc_capture_poll(dev);
		ret = 0;
		break;
	default:
		ret = -EINVAL;
		break;
	};

	return ret;
}

Example #3

File: vfc_dev.c Project: chinnyannieb/empeg-hijack

static int vfc_open(struct inode *inode, struct file *file) 
{
	struct vfc_dev *dev;
	dev=vfc_get_dev_ptr(MINOR(inode->i_rdev));
	if(!dev) return -ENODEV;
	if(dev->busy) return -EBUSY;
	dev->busy=1;
	MOD_INC_USE_COUNT;
	vfc_lock_device(dev);
	
	vfc_csr_init(dev);
	vfc_pcf8584_init(dev);
	vfc_init_i2c_bus(dev);
	vfc_saa9051_init(dev);
	vfc_memptr_reset(dev);
	vfc_captstat_reset(dev);
	
	vfc_unlock_device(dev);
	return 0;
}

Example #4

int vfc_csr_init(struct vfc_dev *dev)
{
	dev->control_reg = 0x80000000;
	sbus_writel(dev->control_reg, &dev->regs->control);
	udelay(200); 
	dev->control_reg &= ~0x80000000;
	sbus_writel(dev->control_reg, &dev->regs->control);
	udelay(100); 
	sbus_writel(0x0f000000, &dev->regs->i2c_magic2);

	vfc_memptr_reset(dev);

	dev->control_reg &= ~VFC_CONTROL_DIAGMODE;
	dev->control_reg &= ~VFC_CONTROL_CAPTURE;
	dev->control_reg |= 0x40000000;
	sbus_writel(dev->control_reg, &dev->regs->control);

	vfc_captstat_reset(dev);

	return 0;
}