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mfd: arizona: Factor out read of device tree GPIOs 

This patch factors out the reading of GPIOs for the Arizona devices
into a helper function.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Charles Keepax 2014-04-16 10:01:37 +01:00 committed by Mark Brown
parent c9eaa447e7
commit e4fcb1d614
2 changed files with 25 additions and 9 deletions
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31
drivers/mfd/arizona-core.c
View File

@ -508,19 +508,32 @@ int arizona_of_get_type(struct device *dev)
}
EXPORT_SYMBOL_GPL(arizona_of_get_type);
int arizona_of_get_named_gpio(struct arizona *arizona, const char *prop,
bool mandatory)
{
int gpio;
gpio = of_get_named_gpio(arizona->dev->of_node, prop, 0);
if (gpio < 0) {
if (mandatory)
dev_err(arizona->dev,
"Mandatory DT gpio %s missing/malformed: %d\n",
prop, gpio);
gpio = 0;
}
return gpio;
}
EXPORT_SYMBOL_GPL(arizona_of_get_named_gpio);
static int arizona_of_get_core_pdata(struct arizona *arizona)
{
struct arizona_pdata *pdata = &arizona->pdata;
int ret, i;
arizona->pdata.reset = of_get_named_gpio(arizona->dev->of_node,
"wlf,reset", 0);
if (arizona->pdata.reset < 0)
arizona->pdata.reset = 0;
arizona->pdata.ldoena = of_get_named_gpio(arizona->dev->of_node,
"wlf,ldoena", 0);
if (arizona->pdata.ldoena < 0)
arizona->pdata.ldoena = 0;
pdata->reset = arizona_of_get_named_gpio(arizona, "wlf,reset", true);
pdata->ldoena = arizona_of_get_named_gpio(arizona, "wlf,ldoena", true);
ret = of_property_read_u32_array(arizona->dev->of_node,
"wlf,gpio-defaults",

3
include/linux/mfd/arizona/core.h
View File

@ -124,4 +124,7 @@ int wm5102_patch(struct arizona *arizona);
int wm5110_patch(struct arizona *arizona);
int wm8997_patch(struct arizona *arizona);
extern int arizona_of_get_named_gpio(struct arizona *arizona, const char *prop,
bool mandatory);
#endif