1/* SPDX-License-Identifier: GPL-2.0 */
2/************************************************************************
3File : Clock H/w specific Information
4
5Author: Pankaj Dev <pankaj.dev@st.com>
6
7Copyright (C) 2014 STMicroelectronics
8************************************************************************/
9
10#ifndef __CLKGEN_INFO_H
11#define __CLKGEN_INFO_H
12
13extern spinlock_t clkgen_a9_lock;
14
15struct clkgen_field {
16 unsigned int offset;
17 unsigned int mask;
18 unsigned int shift;
19};
20
21static inline unsigned long clkgen_read(void __iomem *base,
22 struct clkgen_field *field)
23{
24 return (readl(addr: base + field->offset) >> field->shift) & field->mask;
25}
26
27
28static inline void clkgen_write(void __iomem *base, struct clkgen_field *field,
29 unsigned long val)
30{
31 writel(val: (readl(addr: base + field->offset) &
32 ~(field->mask << field->shift)) | (val << field->shift),
33 addr: base + field->offset);
34
35 return;
36}
37
38#define CLKGEN_FIELD(_offset, _mask, _shift) { \
39 .offset = _offset, \
40 .mask = _mask, \
41 .shift = _shift, \
42 }
43
44#define CLKGEN_READ(pll, field) clkgen_read(pll->regs_base, \
45 &pll->data->field)
46
47#define CLKGEN_WRITE(pll, field, val) clkgen_write(pll->regs_base, \
48 &pll->data->field, val)
49
50#endif /*__CLKGEN_INFO_H*/
51
52

source code of linux/drivers/clk/st/clkgen.h