clk.h (1738B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Copyright 2012 Freescale Semiconductor, Inc. 4 */ 5 6#ifndef __MXS_CLK_H 7#define __MXS_CLK_H 8 9struct clk; 10 11#include <linux/clk-provider.h> 12#include <linux/spinlock.h> 13 14#define SET 0x4 15#define CLR 0x8 16 17extern spinlock_t mxs_lock; 18 19int mxs_clk_wait(void __iomem *reg, u8 shift); 20 21struct clk *mxs_clk_pll(const char *name, const char *parent_name, 22 void __iomem *base, u8 power, unsigned long rate); 23 24struct clk *mxs_clk_ref(const char *name, const char *parent_name, 25 void __iomem *reg, u8 idx); 26 27struct clk *mxs_clk_div(const char *name, const char *parent_name, 28 void __iomem *reg, u8 shift, u8 width, u8 busy); 29 30struct clk *mxs_clk_frac(const char *name, const char *parent_name, 31 void __iomem *reg, u8 shift, u8 width, u8 busy); 32 33static inline struct clk *mxs_clk_fixed(const char *name, int rate) 34{ 35 return clk_register_fixed_rate(NULL, name, NULL, 0, rate); 36} 37 38static inline struct clk *mxs_clk_gate(const char *name, 39 const char *parent_name, void __iomem *reg, u8 shift) 40{ 41 return clk_register_gate(NULL, name, parent_name, CLK_SET_RATE_PARENT, 42 reg, shift, CLK_GATE_SET_TO_DISABLE, 43 &mxs_lock); 44} 45 46static inline struct clk *mxs_clk_mux(const char *name, void __iomem *reg, 47 u8 shift, u8 width, const char *const *parent_names, int num_parents) 48{ 49 return clk_register_mux(NULL, name, parent_names, num_parents, 50 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, 51 reg, shift, width, 0, &mxs_lock); 52} 53 54static inline struct clk *mxs_clk_fixed_factor(const char *name, 55 const char *parent_name, unsigned int mult, unsigned int div) 56{ 57 return clk_register_fixed_factor(NULL, name, parent_name, 58 CLK_SET_RATE_PARENT, mult, div); 59} 60 61#endif /* __MXS_CLK_H */