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mfd: wm8994: Inline register I/O functions 

Since the register I/O functions are all simple wrappers for the regmap
equivalents inline them to provide a small code size saving and an example
of good practice.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Mark Brown 2013-09-06 16:14:28 +01:00 committed by Lee Jones
parent 8a8320c2e7
commit b5f90240e1
2 changed files with 36 additions and 87 deletions
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78
drivers/mfd/wm8994-core.c
View File

@ -33,84 +33,6 @@
#include "wm8994.h"
/**
* wm8994_reg_read: Read a single WM8994 register.
*
* @wm8994: Device to read from.
* @reg: Register to read.
*/
int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
{
unsigned int val;
int ret;
ret = regmap_read(wm8994->regmap, reg, &val);
if (ret < 0)
return ret;
else
return val;
}
EXPORT_SYMBOL_GPL(wm8994_reg_read);
/**
* wm8994_bulk_read: Read multiple WM8994 registers
*
* @wm8994: Device to read from
* @reg: First register
* @count: Number of registers
* @buf: Buffer to fill. The data will be returned big endian.
*/
int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf)
{
return regmap_bulk_read(wm8994->regmap, reg, buf, count);
}
/**
* wm8994_reg_write: Write a single WM8994 register.
*
* @wm8994: Device to write to.
* @reg: Register to write to.
* @val: Value to write.
*/
int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
unsigned short val)
{
return regmap_write(wm8994->regmap, reg, val);
}
EXPORT_SYMBOL_GPL(wm8994_reg_write);
/**
* wm8994_bulk_write: Write multiple WM8994 registers
*
* @wm8994: Device to write to
* @reg: First register
* @count: Number of registers
* @buf: Buffer to write from. Data must be big-endian formatted.
*/
int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
int count, const u16 *buf)
{
return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16));
}
EXPORT_SYMBOL_GPL(wm8994_bulk_write);
/**
* wm8994_set_bits: Set the value of a bitfield in a WM8994 register
*
* @wm8994: Device to write to.
* @reg: Register to write to.
* @mask: Mask of bits to set.
* @val: Value to set (unshifted)
*/
int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
unsigned short mask, unsigned short val)
{
return regmap_update_bits(wm8994->regmap, reg, mask, val);
}
EXPORT_SYMBOL_GPL(wm8994_set_bits);
static struct mfd_cell wm8994_regulator_devs[] = {
{
.name = "wm8994-ldo",

45
include/linux/mfd/wm8994/core.h
View File

@ -85,16 +85,43 @@ struct wm8994 {
};
/* Device I/O API */
int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg);
int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
unsigned short val);
int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
unsigned short mask, unsigned short val);
int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf);
int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
int count, const u16 *buf);
static inline int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
{
unsigned int val;
int ret;
ret = regmap_read(wm8994->regmap, reg, &val);
if (ret < 0)
return ret;
else
return val;
}
static inline int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
unsigned short val)
{
return regmap_write(wm8994->regmap, reg, val);
}
static inline int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf)
{
return regmap_bulk_read(wm8994->regmap, reg, buf, count);
}
static inline int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
int count, const u16 *buf)
{
return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16));
}
static inline int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
unsigned short mask, unsigned short val)
{
return regmap_update_bits(wm8994->regmap, reg, mask, val);
}
/* Helper to save on boilerplate */
static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,