blob: 81421e28e69ca8e7b7a28bb8dabd526f3006ad64 [file] [log] [blame]
Shawn Guo23b5e152012-04-29 00:02:34 +08001/*
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, reg, shift, width,
56 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 */