1/* 2 * Copyright 2012 Freescale Semiconductor, Inc. 3 * 4 * The code contained herein is licensed under the GNU General Public 5 * License. You may obtain a copy of the GNU General Public License 6 * Version 2 or later at the following locations: 7 * 8 * http://www.opensource.org/licenses/gpl-license.html 9 * http://www.gnu.org/copyleft/gpl.html 10 */ 11 12#ifndef __MXS_CLK_H 13#define __MXS_CLK_H 14 15#include <linux/clk.h> 16#include <linux/clk-provider.h> 17#include <linux/spinlock.h> 18 19#define SET 0x4 20#define CLR 0x8 21 22extern spinlock_t mxs_lock; 23 24int mxs_clk_wait(void __iomem *reg, u8 shift); 25 26struct clk *mxs_clk_pll(const char *name, const char *parent_name, 27 void __iomem *base, u8 power, unsigned long rate); 28 29struct clk *mxs_clk_ref(const char *name, const char *parent_name, 30 void __iomem *reg, u8 idx); 31 32struct clk *mxs_clk_div(const char *name, const char *parent_name, 33 void __iomem *reg, u8 shift, u8 width, u8 busy); 34 35struct clk *mxs_clk_frac(const char *name, const char *parent_name, 36 void __iomem *reg, u8 shift, u8 width, u8 busy); 37 38static inline struct clk *mxs_clk_fixed(const char *name, int rate) 39{ 40 return clk_register_fixed_rate(NULL, name, NULL, CLK_IS_ROOT, rate); 41} 42 43static inline struct clk *mxs_clk_gate(const char *name, 44 const char *parent_name, void __iomem *reg, u8 shift) 45{ 46 return clk_register_gate(NULL, name, parent_name, CLK_SET_RATE_PARENT, 47 reg, shift, CLK_GATE_SET_TO_DISABLE, 48 &mxs_lock); 49} 50 51static inline struct clk *mxs_clk_mux(const char *name, void __iomem *reg, 52 u8 shift, u8 width, const char **parent_names, int num_parents) 53{ 54 return clk_register_mux(NULL, name, parent_names, num_parents, 55 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, 56 reg, shift, width, 0, &mxs_lock); 57} 58 59static inline struct clk *mxs_clk_fixed_factor(const char *name, 60 const char *parent_name, unsigned int mult, unsigned int div) 61{ 62 return clk_register_fixed_factor(NULL, name, parent_name, 63 CLK_SET_RATE_PARENT, mult, div); 64} 65 66#endif /* __MXS_CLK_H */ 67