1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /************************************************************************ 3 File : Clock H/w specific Information 4 5 Author: Pankaj Dev <pankaj.dev@st.com> 6 7 Copyright (C) 2014 STMicroelectronics 8 ************************************************************************/ 9 10 #ifndef __CLKGEN_INFO_H 11 #define __CLKGEN_INFO_H 12 13 extern spinlock_t clkgen_a9_lock; 14 15 struct clkgen_field { 16 unsigned int offset; 17 unsigned int mask; 18 unsigned int shift; 19 }; 20 21 static inline unsigned long clkgen_read(void __iomem *base, 22 struct clkgen_field *field) 23 { 24 return (readl(base + field->offset) >> field->shift) & field->mask; 25 } 26 27 28 static inline void clkgen_write(void __iomem *base, struct clkgen_field *field, 29 unsigned long val) 30 { 31 writel((readl(base + field->offset) & 32 ~(field->mask << field->shift)) | (val << field->shift), 33 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