1 // SPDX-License-Identifier: GPL-2.0+
3 // OWL mux clock driver
6 // Author: David Liu <liuwei@actions-semi.com>
11 #include <linux/clk-provider.h>
14 #include "owl-mux.h"
19 	u32 reg;  in owl_mux_helper_get_parent()  local
22 	regmap_read(common->regmap, mux_hw->reg, &reg);  in owl_mux_helper_get_parent()
23 	parent = reg >> mux_hw->shift;  in owl_mux_helper_get_parent()
24 	parent &= BIT(mux_hw->width) - 1;  in owl_mux_helper_get_parent()
31 	struct owl_mux *mux = hw_to_owl_mux(hw);  in owl_mux_get_parent()  local
33 	return owl_mux_helper_get_parent(&mux->common, &mux->mux_hw);  in owl_mux_get_parent()
39 	u32 reg;  in owl_mux_helper_set_parent()  local
41 	regmap_read(common->regmap, mux_hw->reg, &reg);  in owl_mux_helper_set_parent()
42 	reg &= ~GENMASK(mux_hw->width + mux_hw->shift - 1, mux_hw->shift);  in owl_mux_helper_set_parent()
43 	regmap_write(common->regmap, mux_hw->reg,  in owl_mux_helper_set_parent()
44 			reg | (index << mux_hw->shift));  in owl_mux_helper_set_parent()
51 	struct owl_mux *mux = hw_to_owl_mux(hw);  in owl_mux_set_parent()  local
53 	return owl_mux_helper_set_parent(&mux->common, &mux->mux_hw, index);  in owl_mux_set_parent()