[U-Boot] gpio: Question about gpio_set_value() implementation in spear_gpio.c

[Axel Lin]

Current code looks strange because no matter the value argument is 0 or 1
it always calls
        writel(1 << gpio, &regs->gpiodata[DATA_REG_ADDR(gpio)]);

And then gpio_get_value() always return 1.

I'm wondering if it needs to be fixed, something like below change:

diff --git a/drivers/gpio/spear_gpio.c b/drivers/gpio/spear_gpio.c
index d3c728e..8878608 100644
--- a/drivers/gpio/spear_gpio.c
+++ b/drivers/gpio/spear_gpio.c
@@ -52,7 +52,10 @@ int gpio_set_value(unsigned gpio, int value)
 {
        struct gpio_regs *regs = (struct gpio_regs *)CONFIG_GPIO_BASE;
 
-       writel(1 << gpio, &regs->gpiodata[DATA_REG_ADDR(gpio)]);
+       if (value)
+               writel(1 << gpio, &regs->gpiodata[DATA_REG_ADDR(gpio)]);
+       else
+               writel(0, &regs->gpiodata[DATA_REG_ADDR(gpio)]);
 
        return 0;
 }



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