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Commit 236d32a6 authored by Vikram Mulukutla's avatar Vikram Mulukutla Committed by Gerrit - the friendly Code Review server
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clk: msm: clock-alpha-pll: Allow interrupts to be enabled during set_rate 



Some PLL implementations depend on the CPU being able to handle
certain interrupts in order for the set_rate operation to
complete. Allow interrupts to be handled in the set_rate op.

CRs-Fixed: 960701
Change-Id: I6fda5ed9eb7d6f2e2cd91c58ebabfd7bc1c8a2fc
Signed-off-by: default avatarVikram Mulukutla <markivx@codeaurora.org>
parent 9f277664

drivers/clk/msm/clock-alpha-pll.c

+9 −2
Original line number Diff line number Diff line
@@ -611,13 +611,17 @@ static int alpha_pll_set_rate(struct clk *c, unsigned long rate) 
		return -EINVAL;

	}



	if (pll->no_irq_dis)

		spin_lock(&c->lock);

	else

		spin_lock_irqsave(&c->lock, flags);



	/*

	 * For PLLs that do not support dynamic programming (dynamic_update

	 * is not set), ensure PLL is off before changing rate. For

	 * optimization reasons, assume no downstream clock is actively

	 * using it.

	 */

	spin_lock_irqsave(&c->lock, flags);

	if (c->count && !pll->dynamic_update)

		c->ops->disable(c);
@@ -643,6 +647,9 @@ static int alpha_pll_set_rate(struct clk *c, unsigned long rate) 
	if (c->count && !pll->dynamic_update)

		c->ops->enable(c);



	if (pll->no_irq_dis)

		spin_unlock(&c->lock);

	else

		spin_unlock_irqrestore(&c->lock, flags);

	return 0;

}

include/soc/qcom/clock-alpha-pll.h

+1 −0
Original line number Diff line number Diff line
@@ -79,6 +79,7 @@ struct alpha_pll_clk { 
	 * that the workaround is required.

	 */

	bool offline_bit_workaround;

	bool no_irq_dis;

	bool is_fabia;

	unsigned long min_supported_freq;

	struct clk c;