Merge "clk: qcom: mdss: update PLL resources based on ref count" (93e2dd46) · Commits · e / devices / android_kernel_sony_msm8994

drivers/clk/qcom/mdss/mdss-pll.c

+22 −5

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@
		int mdss_pll_resource_enable(struct mdss_pll_resources *pll_res, bool enable)
		{
		int rc = 0;
		int changed = 0;
		if (!pll_res) {
		pr_err("Invalid input parameters\n");
		return -EINVAL;
		@@ -44,11 +45,27 @@ int mdss_pll_resource_enable(struct mdss_pll_resources *pll_res, bool enable)
		return rc;
		}

		if (enable) {
		if (pll_res->resource_ref_cnt == 0)
		changed++;
		pll_res->resource_ref_cnt++;
		} else {
		if (pll_res->resource_ref_cnt) {
		pll_res->resource_ref_cnt--;
		if (pll_res->resource_ref_cnt == 0)
		changed++;
		} else {
		pr_err("PLL Resources already OFF\n");
		}
		}

		if (changed) {
		rc = mdss_pll_util_resource_enable(pll_res, enable);
		if (rc)
		pr_err("Resource update failed rc=%d\n", rc);
		else
		pll_res->resource_enable = enable;
		}

		return rc;
		}

+3 −0

Original line number	Diff line number	Diff line
		@@ -60,6 +60,9 @@ struct mdss_pll_resources {
		/* HW recommended delay during configuration of vco clock rate */
		u32 vco_delay;

		/* Ref-count of the PLL resources */
		u32 resource_ref_cnt;

		/*
		* Keep track to resource status to avoid updating same status for the
		* pll from different paths