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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (c) 2018 MediaTek Inc.
- * Author: Owen Chen <[email protected]>
- */
- #ifndef __DRV_CLK_MTK_MUX_H
- #define __DRV_CLK_MTK_MUX_H
- #include <linux/notifier.h>
- #include <linux/spinlock.h>
- #include <linux/types.h>
- struct clk;
- struct clk_hw_onecell_data;
- struct clk_ops;
- struct device;
- struct device_node;
- struct mtk_mux {
- int id;
- const char *name;
- const char * const *parent_names;
- unsigned int flags;
- u32 mux_ofs;
- u32 set_ofs;
- u32 clr_ofs;
- u32 upd_ofs;
- u8 mux_shift;
- u8 mux_width;
- u8 gate_shift;
- s8 upd_shift;
- const struct clk_ops *ops;
- signed char num_parents;
- };
- #define GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents, _mux_ofs, \
- _mux_set_ofs, _mux_clr_ofs, _shift, _width, \
- _gate, _upd_ofs, _upd, _flags, _ops) { \
- .id = _id, \
- .name = _name, \
- .mux_ofs = _mux_ofs, \
- .set_ofs = _mux_set_ofs, \
- .clr_ofs = _mux_clr_ofs, \
- .upd_ofs = _upd_ofs, \
- .mux_shift = _shift, \
- .mux_width = _width, \
- .gate_shift = _gate, \
- .upd_shift = _upd, \
- .parent_names = _parents, \
- .num_parents = ARRAY_SIZE(_parents), \
- .flags = _flags, \
- .ops = &_ops, \
- }
- extern const struct clk_ops mtk_mux_clr_set_upd_ops;
- extern const struct clk_ops mtk_mux_gate_clr_set_upd_ops;
- #define MUX_GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents, _mux_ofs, \
- _mux_set_ofs, _mux_clr_ofs, _shift, _width, \
- _gate, _upd_ofs, _upd, _flags) \
- GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents, _mux_ofs, \
- _mux_set_ofs, _mux_clr_ofs, _shift, _width, \
- _gate, _upd_ofs, _upd, _flags, \
- mtk_mux_gate_clr_set_upd_ops)
- #define MUX_GATE_CLR_SET_UPD(_id, _name, _parents, _mux_ofs, \
- _mux_set_ofs, _mux_clr_ofs, _shift, _width, \
- _gate, _upd_ofs, _upd) \
- MUX_GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents, \
- _mux_ofs, _mux_set_ofs, _mux_clr_ofs, _shift, \
- _width, _gate, _upd_ofs, _upd, \
- CLK_SET_RATE_PARENT)
- #define MUX_CLR_SET_UPD(_id, _name, _parents, _mux_ofs, \
- _mux_set_ofs, _mux_clr_ofs, _shift, _width, \
- _upd_ofs, _upd) \
- GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents, _mux_ofs, \
- _mux_set_ofs, _mux_clr_ofs, _shift, _width, \
- 0, _upd_ofs, _upd, CLK_SET_RATE_PARENT, \
- mtk_mux_clr_set_upd_ops)
- int mtk_clk_register_muxes(const struct mtk_mux *muxes,
- int num, struct device_node *node,
- spinlock_t *lock,
- struct clk_hw_onecell_data *clk_data);
- void mtk_clk_unregister_muxes(const struct mtk_mux *muxes, int num,
- struct clk_hw_onecell_data *clk_data);
- struct mtk_mux_nb {
- struct notifier_block nb;
- const struct clk_ops *ops;
- u8 bypass_index; /* Which parent to temporarily use */
- u8 original_index; /* Set by notifier callback */
- };
- #define to_mtk_mux_nb(_nb) container_of(_nb, struct mtk_mux_nb, nb)
- int devm_mtk_clk_mux_notifier_register(struct device *dev, struct clk *clk,
- struct mtk_mux_nb *mux_nb);
- #endif /* __DRV_CLK_MTK_MUX_H */
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