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pinctrl: lynxpoint: Introduce helpers to enable or disable input 

Introduce couple of helpers to enable or disable input. i.e.
lp_gpio_enable_input() and lp_gpio_disable_input().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2020-06-15 17:30:15 +03:00
parent f3e7d28122
commit 0472567ba8
1 changed files with 14 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/pinctrl/intel/pinctrl-lynxpoint.c
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@ -386,6 +386,16 @@ static int lp_pinmux_set_mux(struct pinctrl_dev *pctldev,
return 0;
}
static void lp_gpio_enable_input(void __iomem *reg)
{
iowrite32(ioread32(reg) & ~GPINDIS_BIT, reg);
}
static void lp_gpio_disable_input(void __iomem *reg)
{
iowrite32(ioread32(reg) | GPINDIS_BIT, reg);
}
static int lp_gpio_request_enable(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned int pin)
@ -411,7 +421,7 @@ static int lp_gpio_request_enable(struct pinctrl_dev *pctldev,
}
/* Enable input sensing */
iowrite32(ioread32(conf2) & ~GPINDIS_BIT, conf2);
lp_gpio_enable_input(conf2);
raw_spin_unlock_irqrestore(&lg->lock, flags);
@ -429,7 +439,7 @@ static void lp_gpio_disable_free(struct pinctrl_dev *pctldev,
raw_spin_lock_irqsave(&lg->lock, flags);
/* Disable input sensing */
iowrite32(ioread32(conf2) | GPINDIS_BIT, conf2);
lp_gpio_disable_input(conf2);
raw_spin_unlock_irqrestore(&lg->lock, flags);
@ -921,14 +931,11 @@ static int lp_gpio_resume(struct device *dev)
struct intel_pinctrl *lg = dev_get_drvdata(dev);
struct gpio_chip *chip = &lg->chip;
const char *dummy;
void __iomem *reg;
int i;
/* on some hardware suspend clears input sensing, re-enable it here */
for_each_requested_gpio(chip, i, dummy) {
reg = lp_gpio_reg(chip, i, LP_CONFIG2);
iowrite32(ioread32(reg) & ~GPINDIS_BIT, reg);
}
for_each_requested_gpio(chip, i, dummy)
lp_gpio_enable_input(lp_gpio_reg(chip, i, LP_CONFIG2));
return 0;
}