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 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 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