Merge "phy-msm-ssusb-qmp: Toggle between xo and pipe clk in/out of LPM" (7a5974f9) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/usb/phy/phy-msm-ssusb-qmp.c

+16 −1

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2013-2018, The Linux Foundation. All rights reserved.
		* Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
		*/

		#include <linux/module.h>
		@@ -128,6 +128,8 @@ struct msm_ssphy_qmp {
		struct clk *com_aux_clk;
		struct clk *cfg_ahb_clk;
		struct clk *pipe_clk;
		struct clk *pipe_clk_mux;
		struct clk *pipe_clk_ext_src;
		struct reset_control *phy_reset;
		struct reset_control *phy_phy_reset;
		struct reset_control *global_phy_reset;
		@@ -898,6 +900,14 @@ static int msm_ssphy_qmp_get_clks(struct msm_ssphy_qmp phy, struct device dev)
		goto err;
		}

		phy->pipe_clk_mux = devm_clk_get(dev, "pipe_clk_mux");
		if (IS_ERR(phy->pipe_clk_mux))
		phy->pipe_clk_mux = NULL;

		phy->pipe_clk_ext_src = devm_clk_get(dev, "pipe_clk_ext_src");
		if (IS_ERR(phy->pipe_clk_ext_src))
		phy->pipe_clk_ext_src = NULL;

		phy->ref_clk_src = devm_clk_get(dev, "ref_clk_src");
		if (IS_ERR(phy->ref_clk_src))
		phy->ref_clk_src = NULL;
		@@ -941,6 +951,8 @@ static void msm_ssphy_qmp_enable_clks(struct msm_ssphy_qmp *phy, bool on)
		if (phy->cfg_ahb_clk)
		clk_prepare_enable(phy->cfg_ahb_clk);

		//select PHY pipe clock
		clk_set_parent(phy->pipe_clk_mux, phy->pipe_clk_ext_src);
		clk_prepare_enable(phy->pipe_clk);
		phy->clk_enabled = true;
		}
		@@ -948,6 +960,9 @@ static void msm_ssphy_qmp_enable_clks(struct msm_ssphy_qmp *phy, bool on)
		if (phy->clk_enabled && !on) {
		clk_disable_unprepare(phy->pipe_clk);

		//select XO instead of PHY pipe clock
		clk_set_parent(phy->pipe_clk_mux, phy->ref_clk_src);

		if (phy->cfg_ahb_clk)
		clk_disable_unprepare(phy->cfg_ahb_clk);