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88 lines
2.5 KiB
88 lines
2.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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// |
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// Spreadtrum multiplexer clock driver |
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// |
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// Copyright (C) 2017 Spreadtrum, Inc. |
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// Author: Chunyan Zhang <[email protected]> |
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#ifndef _SPRD_MUX_H_ |
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#define _SPRD_MUX_H_ |
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#include "common.h" |
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/** |
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* struct sprd_mux_ssel - Mux clock's source select bits in its register |
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* @shift: Bit offset of the divider in its register |
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* @width: Width of the divider field in its register |
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* @table: For some mux clocks, not all sources are used on some special |
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* chips, this matches the value of mux clock's register and the |
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* sources which are used for this mux clock |
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*/ |
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struct sprd_mux_ssel { |
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u8 shift; |
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u8 width; |
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const u8 *table; |
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}; |
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struct sprd_mux { |
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struct sprd_mux_ssel mux; |
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struct sprd_clk_common common; |
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}; |
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#define _SPRD_MUX_CLK(_shift, _width, _table) \ |
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{ \ |
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.shift = _shift, \ |
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.width = _width, \ |
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.table = _table, \ |
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} |
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#define SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \ |
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_reg, _shift, _width, _flags, _fn) \ |
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struct sprd_mux _struct = { \ |
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.mux = _SPRD_MUX_CLK(_shift, _width, _table), \ |
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.common = { \ |
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.regmap = NULL, \ |
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.reg = _reg, \ |
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.hw.init = _fn(_name, _parents, \ |
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&sprd_mux_ops, _flags), \ |
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} \ |
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} |
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#define SPRD_MUX_CLK_TABLE(_struct, _name, _parents, _table, \ |
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_reg, _shift, _width, _flags) \ |
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SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \ |
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_reg, _shift, _width, _flags, \ |
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CLK_HW_INIT_PARENTS) |
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#define SPRD_MUX_CLK(_struct, _name, _parents, _reg, \ |
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_shift, _width, _flags) \ |
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SPRD_MUX_CLK_TABLE(_struct, _name, _parents, NULL, \ |
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_reg, _shift, _width, _flags) |
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#define SPRD_MUX_CLK_DATA_TABLE(_struct, _name, _parents, _table, \ |
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_reg, _shift, _width, _flags) \ |
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SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \ |
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_reg, _shift, _width, _flags, \ |
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CLK_HW_INIT_PARENTS_DATA) |
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#define SPRD_MUX_CLK_DATA(_struct, _name, _parents, _reg, \ |
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_shift, _width, _flags) \ |
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SPRD_MUX_CLK_DATA_TABLE(_struct, _name, _parents, NULL, \ |
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_reg, _shift, _width, _flags) |
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static inline struct sprd_mux *hw_to_sprd_mux(const struct clk_hw *hw) |
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{ |
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struct sprd_clk_common *common = hw_to_sprd_clk_common(hw); |
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return container_of(common, struct sprd_mux, common); |
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} |
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extern const struct clk_ops sprd_mux_ops; |
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u8 sprd_mux_helper_get_parent(const struct sprd_clk_common *common, |
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const struct sprd_mux_ssel *mux); |
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int sprd_mux_helper_set_parent(const struct sprd_clk_common *common, |
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const struct sprd_mux_ssel *mux, |
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u8 index); |
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#endif /* _SPRD_MUX_H_ */
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