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https://github.com/edk2-porting/linux-next.git
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559c04f6f1
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>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/* Copyright (C) 2010 Google, Inc.
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* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
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* Author: Dima Zavin <dima@android.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _LINUX_SSBI_H
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#define _LINUX_SSBI_H
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#include <linux/types.h>
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int ssbi_write(struct device *dev, u16 addr, const u8 *buf, int len);
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int ssbi_read(struct device *dev, u16 addr, u8 *buf, int len);
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static inline int
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ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
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{
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int ret;
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u8 v;
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ret = ssbi_read(context, reg, &v, 1);
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if (!ret)
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*val = v;
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return ret;
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}
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static inline int
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ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
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{
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u8 v = val;
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return ssbi_write(context, reg, &v, 1);
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}
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#endif
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