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Commit 0d8060cd authored by David Dai's avatar David Dai Committed by Gerrit - the friendly Code Review server
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clk: add bus voting to rate_get, rate_set, enable_set debug functions 



In addition to voting bandwidth for clk_summary, clk_show and
clk_print_reg, also add votes for clock debug rate_set, rate_get and
enable_set to allow access to the config space of multimedia
clock controllers including display, camera, and video.

Change-Id: Id3e56c80cc14c96b58c2c10dc713f0af056c790c
Signed-off-by: default avatarDavid Dai <daidavid1@codeaurora.org>
parent 25518a1e

drivers/clk/clk.c

+24 −0
Original line number Diff line number Diff line
@@ -3404,11 +3404,19 @@ static int clock_debug_rate_set(void *data, u64 val) 
	struct clk_core *core = data;

	int ret;



	clk_prepare_lock();

	if (core->ops->bus_vote)

		core->ops->bus_vote(core->hw, true);



	ret = clk_set_rate(core->hw->clk, val);

	if (ret)

		pr_err("clk_set_rate(%lu) failed (%d)\n",

				(unsigned long)val, ret);



	if (core->ops->bus_vote)

		core->ops->bus_vote(core->hw, false);

	clk_prepare_unlock();



	return ret;

}
@@ -3416,8 +3424,16 @@ static int clock_debug_rate_get(void *data, u64 *val) 
{

	struct clk_core *core = data;



	clk_prepare_lock();

	if (core->ops->bus_vote)

		core->ops->bus_vote(core->hw, true);



	*val = clk_get_rate(core->hw->clk);



	if (core->ops->bus_vote)

		core->ops->bus_vote(core->hw, false);

	clk_prepare_unlock();



	return 0;

}
@@ -3446,11 +3462,19 @@ static int clock_debug_enable_set(void *data, u64 val) 
	struct clk_core *core = data;

	int rc = 0;



	clk_prepare_lock();

	if (core->ops->bus_vote)

		core->ops->bus_vote(core->hw, true);



	if (val)

		rc = clk_prepare_enable(core->hw->clk);

	else

		clk_disable_unprepare(core->hw->clk);



	if (core->ops->bus_vote)

		core->ops->bus_vote(core->hw, false);

	clk_prepare_unlock();



	return rc;

}