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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2018 MediaTek Inc.
* Author: Owen Chen <owen.chen@mediatek.com>
*/
#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(struct device *dev,
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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