52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/************************************************************************
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File : Clock H/w specific Information
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Author: Pankaj Dev <pankaj.dev@st.com>
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Copyright (C) 2014 STMicroelectronics
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************************************************************************/
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#ifndef __CLKGEN_INFO_H
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#define __CLKGEN_INFO_H
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extern spinlock_t clkgen_a9_lock;
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struct clkgen_field {
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unsigned int offset;
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unsigned int mask;
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unsigned int shift;
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};
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static inline unsigned long clkgen_read(void __iomem *base,
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struct clkgen_field *field)
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{
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return (readl(base + field->offset) >> field->shift) & field->mask;
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}
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static inline void clkgen_write(void __iomem *base, struct clkgen_field *field,
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unsigned long val)
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{
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writel((readl(base + field->offset) &
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~(field->mask << field->shift)) | (val << field->shift),
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base + field->offset);
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return;
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}
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#define CLKGEN_FIELD(_offset, _mask, _shift) { \
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.offset = _offset, \
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.mask = _mask, \
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.shift = _shift, \
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}
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#define CLKGEN_READ(pll, field) clkgen_read(pll->regs_base, \
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&pll->data->field)
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#define CLKGEN_WRITE(pll, field, val) clkgen_write(pll->regs_base, \
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&pll->data->field, val)
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#endif /*__CLKGEN_INFO_H*/
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