[deliverable/linux.git] / drivers / clk / st / clkgen.h

/************************************************************************
File  : Clock H/w specific Information

Author: Pankaj Dev <pankaj.dev@st.com>

Copyright (C) 2014 STMicroelectronics
************************************************************************/

#ifndef __CLKGEN_INFO_H
#define __CLKGEN_INFO_H

extern spinlock_t clkgen_a9_lock;

struct clkgen_field {
	unsigned int offset;
	unsigned int mask;
	unsigned int shift;
};

static inline unsigned long clkgen_read(void __iomem	*base,
					  struct clkgen_field *field)
{
	return (readl(base + field->offset) >> field->shift) & field->mask;
}


static inline void clkgen_write(void __iomem *base, struct clkgen_field *field,
				  unsigned long val)
{
	writel((readl(base + field->offset) &
	       ~(field->mask << field->shift)) | (val << field->shift),
	       base + field->offset);

	return;
}

#define CLKGEN_FIELD(_offset, _mask, _shift) {		\
				.offset	= _offset,	\
				.mask	= _mask,	\
				.shift	= _shift,	\
				}

#define CLKGEN_READ(pll, field) clkgen_read(pll->regs_base, \
		&pll->data->field)

#define CLKGEN_WRITE(pll, field, val) clkgen_write(pll->regs_base, \
		&pll->data->field, val)

#endif /*__CLKGEN_INFO_H*/
Commit	Line	Data
b9b8e614 GF	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
46a57afd GF	12	extern spinlock_t clkgen_a9_lock;
46a57afd GF	13
b9b8e614 GF	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