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mfd: arizona: Factor out hard reset into helper functions 

This patch adds functions for enabling and disabling the physical reset
line. This will be helpful in future refactoring.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
hifive-unleashed-5.1
Charles Keepax 2015-05-11 13:58:02 +01:00 committed by Lee Jones
parent 5f056bf042
commit 2229875dc0
1 changed files with 17 additions and 8 deletions
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25
drivers/mfd/arizona-core.c
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@ -250,6 +250,20 @@ static int arizona_wait_for_boot(struct arizona *arizona)
return ret;
}
static inline void arizona_enable_reset(struct arizona *arizona)
{
if (arizona->pdata.reset)
gpio_set_value_cansleep(arizona->pdata.reset, 0);
}
static void arizona_disable_reset(struct arizona *arizona)
{
if (arizona->pdata.reset) {
gpio_set_value_cansleep(arizona->pdata.reset, 1);
msleep(1);
}
}
static int arizona_apply_hardware_patch(struct arizona* arizona)
{
unsigned int fll, sysclk;
@ -751,10 +765,7 @@ int arizona_dev_init(struct arizona *arizona)
goto err_enable;
}
if (arizona->pdata.reset) {
gpio_set_value_cansleep(arizona->pdata.reset, 1);
msleep(1);
}
arizona_disable_reset(arizona);
regcache_cache_only(arizona->regmap, false);
@ -1046,8 +1057,7 @@ int arizona_dev_init(struct arizona *arizona)
err_irq:
arizona_irq_exit(arizona);
err_reset:
if (arizona->pdata.reset)
gpio_set_value_cansleep(arizona->pdata.reset, 0);
arizona_enable_reset(arizona);
regulator_disable(arizona->dcvdd);
err_enable:
regulator_bulk_disable(arizona->num_core_supplies,
@ -1072,8 +1082,7 @@ int arizona_dev_exit(struct arizona *arizona)
arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
arizona_irq_exit(arizona);
if (arizona->pdata.reset)
gpio_set_value_cansleep(arizona->pdata.reset, 0);
arizona_enable_reset(arizona);
regulator_bulk_disable(arizona->num_core_supplies,
arizona->core_supplies);