forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.1 KiB
46 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* Copyright (c) 2015 Endless Mobile, Inc. |
|
* Author: Carlo Caione <[email protected]> |
|
*/ |
|
|
|
#ifndef __MESON_PARM_H |
|
#define __MESON_PARM_H |
|
|
|
#include <linux/bits.h> |
|
#include <linux/regmap.h> |
|
|
|
#define PMASK(width) GENMASK(width - 1, 0) |
|
#define SETPMASK(width, shift) GENMASK(shift + width - 1, shift) |
|
#define CLRPMASK(width, shift) (~SETPMASK(width, shift)) |
|
|
|
#define PARM_GET(width, shift, reg) \ |
|
(((reg) & SETPMASK(width, shift)) >> (shift)) |
|
#define PARM_SET(width, shift, reg, val) \ |
|
(((reg) & CLRPMASK(width, shift)) | ((val) << (shift))) |
|
|
|
#define MESON_PARM_APPLICABLE(p) (!!((p)->width)) |
|
|
|
struct parm { |
|
u16 reg_off; |
|
u8 shift; |
|
u8 width; |
|
}; |
|
|
|
static inline unsigned int meson_parm_read(struct regmap *map, struct parm *p) |
|
{ |
|
unsigned int val; |
|
|
|
regmap_read(map, p->reg_off, &val); |
|
return PARM_GET(p->width, p->shift, val); |
|
} |
|
|
|
static inline void meson_parm_write(struct regmap *map, struct parm *p, |
|
unsigned int val) |
|
{ |
|
regmap_update_bits(map, p->reg_off, SETPMASK(p->width, p->shift), |
|
val << p->shift); |
|
} |
|
|
|
#endif /* __MESON_PARM_H */ |
|
|
|
|