From a83387729af8a7ded74e7155efb9468cefe081bd Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Mon, 26 Mar 2018 23:08:59 +0530 Subject: clk: actions: Add mux clock support Add support for Actions Semi mux clock together with helper functions to be used in composite clock. Signed-off-by: Manivannan Sadhasivam Signed-off-by: Stephen Boyd --- drivers/clk/actions/owl-mux.h | 61 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 drivers/clk/actions/owl-mux.h (limited to 'drivers/clk/actions/owl-mux.h') diff --git a/drivers/clk/actions/owl-mux.h b/drivers/clk/actions/owl-mux.h new file mode 100644 index 000000000000..834284c8c3ae --- /dev/null +++ b/drivers/clk/actions/owl-mux.h @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// OWL mux clock driver +// +// Copyright (c) 2014 Actions Semi Inc. +// Author: David Liu +// +// Copyright (c) 2018 Linaro Ltd. +// Author: Manivannan Sadhasivam + +#ifndef _OWL_MUX_H_ +#define _OWL_MUX_H_ + +#include "owl-common.h" + +struct owl_mux_hw { + u32 reg; + u8 shift; + u8 width; +}; + +struct owl_mux { + struct owl_mux_hw mux_hw; + struct owl_clk_common common; +}; + +#define OWL_MUX_HW(_reg, _shift, _width) \ + { \ + .reg = _reg, \ + .shift = _shift, \ + .width = _width, \ + } + +#define OWL_MUX(_struct, _name, _parents, _reg, \ + _shift, _width, _flags) \ + struct owl_mux _struct = { \ + .mux_hw = OWL_MUX_HW(_reg, _shift, _width), \ + .common = { \ + .regmap = NULL, \ + .hw.init = CLK_HW_INIT_PARENTS(_name, \ + _parents, \ + &owl_mux_ops, \ + _flags), \ + }, \ + } + +static inline struct owl_mux *hw_to_owl_mux(const struct clk_hw *hw) +{ + struct owl_clk_common *common = hw_to_owl_clk_common(hw); + + return container_of(common, struct owl_mux, common); +} + +u8 owl_mux_helper_get_parent(const struct owl_clk_common *common, + const struct owl_mux_hw *mux_hw); +int owl_mux_helper_set_parent(const struct owl_clk_common *common, + struct owl_mux_hw *mux_hw, u8 index); + +extern const struct clk_ops owl_mux_ops; + +#endif /* _OWL_MUX_H_ */ -- cgit v1.2.3-55-g7522