Commit c2f86822 authored Sep 10, 2014 by Deepak Katragadda Committed by Gerrit - the friendly Code Review server Oct 02, 2014

qcom: clock-rpm: Add check to avoid enabling RPM scaling multiple times



Currently, the request to enable RPM scaling is made
everytime the enable_rpm_scaling function is invoked.
With the new msm-clock controller driver, this will
happen everytime a clock controller is probed, i.e.
once for RPM CC, once for GCC CC, etc.
Avoid sending these multiple requests to RPM.

Change-Id: If2a9683a7a80c8c9fd090c60b2229ca7541dab52
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>

parent c5564588

drivers/clk/qcom/clock-rpm.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -268,12 +268,17 @@ static enum handoff rpm_clk_handoff(struct clk *clk)
		int enable_rpm_scaling(void)
		{
		int rc, value = 0x1;
		static int is_inited;

		struct msm_rpm_kvp kvp = {
		.key = RPM_SMD_KEY_ENABLE,
		.data = (void *)&value,
		.length = sizeof(value),
		};

		if (is_inited)
		return 0;

		rc = msm_rpm_send_message_noirq(MSM_RPM_CTX_SLEEP_SET,
		RPM_MISC_CLK_TYPE, RPM_SCALING_ENABLE_ID, &kvp, 1);
		if (rc < 0) {
		@@ -290,6 +295,7 @@ int enable_rpm_scaling(void)
		return rc;
		}

		is_inited++;
		return 0;
		}