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gpio: mxs: read pin level directly instead of using .get 

Calling readl directly instead of going through another function that
results in the same result to remove some overhead. I didn't try to
measure the performance gain, but IMHO there is little benefit from
abstracting a GPIO register access in the GPIO driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Uwe Kleine-König 2018-12-18 09:47:57 +01:00 committed by Linus Walleij
parent 533918b6f6
commit f0df462f3a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-mxs.c
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@ -84,7 +84,7 @@ static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type)
port->both_edges &= ~pin_mask;
switch (type) {
case IRQ_TYPE_EDGE_BOTH:
val = port->gc.get(&port->gc, d->hwirq);
val = readl(port->base + PINCTRL_DIN(port)) & pin_mask;
if (val)
edge = GPIO_INT_FALL_EDGE;
else