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 extern spinlock_t clkgen_a9_lock; 13 14 struct clkgen_field { 15 unsigned int offset; 16 unsigned int mask; 17 unsigned int shift; 18 }; 19 20 static inline unsigned long clkgen_read(void __iomem *base, 21 struct clkgen_field *field) 22 { 23 return (readl(base + field->offset) >> field->shift) & field->mask; 24 } 25 26 27 static inline void clkgen_write(void __iomem *base, struct clkgen_field *field, 28 unsigned long val) 29 { 30 writel((readl(base + field->offset) & 31 ~(field->mask << field->shift)) | (val << field->shift), 32 base + field->offset); 33 34 return; 35 } 36 37 #define CLKGEN_FIELD(_offset, _mask, _shift) { \ 38 .offset = _offset, \ 39 .mask = _mask, \ 40 .shift = _shift, \ 41 } 42 43 #define CLKGEN_READ(pll, field) clkgen_read(pll->regs_base, \ 44 &pll->data->field) 45 46 #define CLKGEN_WRITE(pll, field, val) clkgen_write(pll->regs_base, \ 47 &pll->data->field, val) 48 49 #endif /*__CLKGEN_INFO_H*/ 50 51