[mirror_ubuntu-bionic-kernel.git] / drivers / clk / st / clkgen.h

/* SPDX-License-Identifier: GPL-2.0 */
/************************************************************************
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
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
b9b8e614 GF	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
46a57afd GF	13	extern spinlock_t clkgen_a9_lock;
46a57afd GF	14
b9b8e614 GF	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