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gpio: add special GPIO signal values
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@ -40,6 +40,9 @@ extern "C" {
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#define GPIO_ID_PIN(n) (GPIO_ID_PIN0+(n))
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#define GPIO_PIN_ADDR(i) (GPIO_PIN0_REG + i*4)
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#define GPIO_FUNC_IN_HIGH 0x38
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#define GPIO_FUNC_IN_LOW 0x30
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#define GPIO_ID_IS_PIN_REGISTER(reg_id) \
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((reg_id >= GPIO_ID_PIN0) && (reg_id <= GPIO_ID_PIN(GPIO_PIN_COUNT-1)))
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