Esempi in C++ (Cpp) per clk_is_bypassable

Esempio n. 1

File: clock.c Progetto: CSCLOG/beaglebone

int clk_set_parent(struct clk *clk, struct clk *parent)
{
	unsigned long flags;
	struct clk *old_parent;

	if (!clk || !parent)
		return -EINVAL;

	if (!clk_is_primary(parent) || !clk_is_bypassable(clk))
		return -EINVAL;

	/* if more than one user, parent is not allowed */
	if (clk->use_cnt > 1)
		return -EBUSY;

	if (clk->parent == parent)
		return 0;

	spin_lock_irqsave(&clk_lock, flags);
	old_parent = clk->parent;
	clk->parent = parent;
	if (clk_is_using_xtal(parent))
		clk->mode |= CLK_MODE_XTAL;
	else
		clk->mode &= (~CLK_MODE_XTAL);

	/* if clock is active */
	if (clk->use_cnt != 0) {
		clk->use_cnt--;
		/* enable clock with the new parent */
		__clk_enable(clk);
		/* disable the old parent */
		__clk_disable(old_parent);
	}
	spin_unlock_irqrestore(&clk_lock, flags);

	return 0;
}

Esempio n. 2

int clk_set_parent(struct clk *clk, struct clk *parent)
{
	unsigned long flags;
	struct clk *old_parent;

	if (!clk || !parent)
		return -EINVAL;

	if (!clk_is_primary(parent) || !clk_is_bypassable(clk))
		return -EINVAL;

	
	if (clk->use_cnt > 1)
		return -EBUSY;

	if (clk->parent == parent)
		return 0;

	spin_lock_irqsave(&clk_lock, flags);
	old_parent = clk->parent;
	clk->parent = parent;
	if (clk_is_using_xtal(parent))
		clk->mode |= CLK_MODE_XTAL;
	else
		clk->mode &= (~CLK_MODE_XTAL);

	
	if (clk->use_cnt != 0) {
		clk->use_cnt--;
		
		__clk_enable(clk);
		
		__clk_disable(old_parent);
	}
	spin_unlock_irqrestore(&clk_lock, flags);

	return 0;
}