Exemple #1
0
static int __init clk_init(void)
{
	struct clk **clkp;

	/* Disable autoclocking, as it doesn't seem to work */
	__raw_writel(0xff, AUTOCLK_CTRL);

	for (clkp = onchip_clks; clkp < onchip_clks + ARRAY_SIZE(onchip_clks);
	     clkp++) {
		if (((*clkp)->flags & NEEDS_INITIALIZATION)
		    && ((*clkp)->set_rate)) {
			(*clkp)->user_rate = (*clkp)->rate;
			local_set_rate((*clkp), (*clkp)->user_rate);
			if ((*clkp)->set_parent)
				(*clkp)->set_parent((*clkp), (*clkp)->parent);
		}
		pr_debug("%s: clock %s, rate %ld\n",
			__func__, (*clkp)->name, (*clkp)->rate);
	}

	local_clk_use(&ck_pll4);

	/* if ck_13MHz is not used, disable it. */
	if (ck_13MHz.usecount == 0)
		local_clk_disable(&ck_13MHz);

	/* Disable autoclocking */
	__raw_writeb(0xff, AUTOCLK_CTRL);

	return 0;
}
Exemple #2
0
static void propagate_rate(struct clk *clk)
{
	struct clk *tmp_clk;

	tmp_clk = clk;
	while (tmp_clk->propagate_next) {
		tmp_clk = tmp_clk->propagate_next;
		local_set_rate(tmp_clk, tmp_clk->user_rate);
	}
}
Exemple #3
0
static int __init clk_init(void)
{
	struct clk **clkp;

	/* Disable autoclocking, as it doesn't seem to work */
	__raw_writel(0xff, AUTOCLK_CTRL);

	for (clkp = onchip_clks; clkp < onchip_clks + ARRAY_SIZE(onchip_clks);
	     clkp++) {
		struct clk *clk = *clkp;
		if (clk->flags & NEEDS_INITIALIZATION) {
			if (clk->set_rate) {
				clk->user_rate = clk->rate;
				local_set_rate(clk, clk->user_rate);
				if (clk->set_parent)
					clk->set_parent(clk, clk->parent);
			}
			if (clk->enable && clk->usecount)
				clk->enable(clk);
			if (clk->disable && !clk->usecount)
				clk->disable(clk);
		}
		pr_debug("%s: clock %s, rate %ld\n",
			__func__, clk->name, clk->rate);
	}

	local_clk_enable(&ck_pll4);

	/* if ck_13MHz is not used, disable it. */
	if (ck_13MHz.usecount == 0)
		local_clk_disable(&ck_13MHz);

	/* Disable autoclocking */
	__raw_writeb(0xff, AUTOCLK_CTRL);

	clkdev_add_table(onchip_clkreg, ARRAY_SIZE(onchip_clkreg));

	return 0;
}
Exemple #4
0
int clk_set_rate(struct clk *clk, unsigned long rate)
{
	int ret = -EINVAL;

	if (clk->flags & FIXED_RATE)
		goto out;

	clock_lock();
	if ((clk->flags & PARENT_SET_RATE) && clk->parent) {

		clk->user_rate = clk->round_rate(clk, rate);
		/* parent clock needs to be refreshed
		   for the setting to take effect */
	} else {
		ret = local_set_rate(clk, rate);
	}
	ret = 0;
	clock_unlock();

out:
	return ret;
}