pinctrl: bcm: nsp: implement get_direction
The get_direction api is strongly recommended to be implemented. In fact if it is not implemented gpio-hogs will not get the correct direction. Add an implementation of get_direction for the nsp-gpio driver. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20191104001819.2300-3-chris.packham@alliedtelesis.co.nz Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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@ -297,6 +297,19 @@ static int nsp_gpio_direction_output(struct gpio_chip *gc, unsigned gpio,
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return 0;
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}
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static int nsp_gpio_get_direction(struct gpio_chip *gc, unsigned gpio)
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{
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struct nsp_gpio *chip = gpiochip_get_data(gc);
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unsigned long flags;
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int val;
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raw_spin_lock_irqsave(&chip->lock, flags);
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val = nsp_get_bit(chip, REG, NSP_GPIO_OUT_EN, gpio);
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raw_spin_unlock_irqrestore(&chip->lock, flags);
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return !val;
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}
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static void nsp_gpio_set(struct gpio_chip *gc, unsigned gpio, int val)
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{
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struct nsp_gpio *chip = gpiochip_get_data(gc);
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@ -641,6 +654,7 @@ static int nsp_gpio_probe(struct platform_device *pdev)
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gc->free = gpiochip_generic_free;
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gc->direction_input = nsp_gpio_direction_input;
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gc->direction_output = nsp_gpio_direction_output;
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gc->get_direction = nsp_gpio_get_direction;
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gc->set = nsp_gpio_set;
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gc->get = nsp_gpio_get;
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