linux-hardened/include/linux/ssbi.h
Stephen Boyd 559c04f6f1 mfd: ssbi: Add regmap read/write helpers
Add read and write helper functions that the pm8921-core driver
can use to read and write ssbi registers via a "no-bus" regmap.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-19 08:58:30 +00:00

43 lines
1.1 KiB
C

/* Copyright (C) 2010 Google, Inc.
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
* Author: Dima Zavin <dima@android.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _LINUX_SSBI_H
#define _LINUX_SSBI_H
#include <linux/types.h>
int ssbi_write(struct device *dev, u16 addr, const u8 *buf, int len);
int ssbi_read(struct device *dev, u16 addr, u8 *buf, int len);
static inline int
ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
{
int ret;
u8 v;
ret = ssbi_read(context, reg, &v, 1);
if (!ret)
*val = v;
return ret;
}
static inline int
ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
{
u8 v = val;
return ssbi_write(context, reg, &v, 1);
}
#endif