1 /************************************************************************
2 File : Clock H/w specific Information
3
4 Author: Pankaj Dev <pankaj.dev@st.com>
5
6 Copyright (C) 2014 STMicroelectronics
7 ************************************************************************/
8
9 #ifndef __CLKGEN_INFO_H
10 #define __CLKGEN_INFO_H
11
12 struct clkgen_field {
13 unsigned int offset;
14 unsigned int mask;
15 unsigned int shift;
16 };
17
clkgen_read(void __iomem * base,struct clkgen_field * field)18 static inline unsigned long clkgen_read(void __iomem *base,
19 struct clkgen_field *field)
20 {
21 return (readl(base + field->offset) >> field->shift) & field->mask;
22 }
23
24
clkgen_write(void __iomem * base,struct clkgen_field * field,unsigned long val)25 static inline void clkgen_write(void __iomem *base, struct clkgen_field *field,
26 unsigned long val)
27 {
28 writel((readl(base + field->offset) &
29 ~(field->mask << field->shift)) | (val << field->shift),
30 base + field->offset);
31
32 return;
33 }
34
35 #define CLKGEN_FIELD(_offset, _mask, _shift) { \
36 .offset = _offset, \
37 .mask = _mask, \
38 .shift = _shift, \
39 }
40
41 #define CLKGEN_READ(pll, field) clkgen_read(pll->regs_base, \
42 &pll->data->field)
43
44 #define CLKGEN_WRITE(pll, field, val) clkgen_write(pll->regs_base, \
45 &pll->data->field, val)
46
47 #endif /*__CLKGEN_INFO_H*/
48
49