Exemple #1
0
int pnx4008_gpio_unregister_pin(unsigned short pin)
{
	unsigned long bit = GPIO_BIT(pin);
	int ret = -EFAULT;	/* Not registered */

	gpio_lock();

	if (GPIO_ISBID(pin)) {
		if (~access_map[GPIO_INDEX] & bit)
			goto out;
		access_map[GPIO_INDEX] &= ~bit;
	} else if (GPIO_ISRAM(pin)) {
		if (~access_map[GPIO_INDEX] & bit)
			goto out;
		access_map[GPIO_INDEX] &= ~bit;
	} else if (GPIO_ISMUX(pin)) {
		if (~access_map[MUX_INDEX] & bit)
			goto out;
		access_map[MUX_INDEX] &= ~bit;
	} else if (GPIO_ISOUT(pin)) {
		if (~access_map[OUTP_INDEX] & bit)
			goto out;
		access_map[OUTP_INDEX] &= ~bit;
	} else if (GPIO_ISIN(pin)) {
		if (~access_map[INP_INDEX] & bit)
			goto out;
		access_map[INP_INDEX] &= ~bit;
	} else
		goto out;
	ret = 0;

out:
	gpio_unlock();
	return ret;
}
Exemple #2
0
/* Read GPIO pin direction: 0= pin used as input, 1= pin used as output*/
int pnx4008_gpio_read_pin_direction(unsigned short pin)
{
	int gpio = GPIO_BIT_MASK(pin);
	int ret = -EFAULT;

	gpio_lock();
	if (GPIO_ISBID(pin) || GPIO_ISRAM(pin)) {
		ret = gpio_read_bit(PIO_DRV_STATE, gpio);
	}
	gpio_unlock();
	return ret;
}
Exemple #3
0
/* Value = 0 : Set GPIO pin as input */
int pnx4008_gpio_set_pin_direction(unsigned short pin, int output)
{
	int gpio = GPIO_BIT_MASK(pin);
	int ret = -EFAULT;

	gpio_lock();
	if (GPIO_ISBID(pin) || GPIO_ISRAM(pin)) {
		ret = gpio_set_bit(output ? PIO_DRV_SET : PIO_DRV_CLR, gpio);
	}
	gpio_unlock();
	return ret;
}
Exemple #4
0
/* Read pin mux function: 0= pin used as GPIO, 1= pin used for muxed function*/
int pnx4008_gpio_read_pin_mux(unsigned short pin)
{
	int gpio = GPIO_BIT_MASK(pin);
	int ret = -EFAULT;

	gpio_lock();
	if (GPIO_ISBID(pin)) {
		ret = gpio_read_bit(PIO_MUX_STATE, gpio_to_mux_map[gpio]);
	} else if (GPIO_ISOUT(pin)) {
		ret = gpio_read_bit(PIO_MUX_STATE, outp_to_mux_map[gpio]);
	} else if (GPIO_ISMUX(pin)) {
		ret = gpio_read_bit(PIO_MUX_STATE, gpio);
	}
	gpio_unlock();
	return ret;
}
Exemple #5
0
/* Value = 0 : Set pin as GPIO */
int pnx4008_gpio_set_pin_mux(unsigned short pin, int output)
{
	int gpio = GPIO_BIT_MASK(pin);
	int ret = -EFAULT;

	gpio_lock();
	if (GPIO_ISBID(pin)) {
		ret =
		    gpio_set_bit(output ? PIO_MUX_SET : PIO_MUX_CLR,
				 gpio_to_mux_map[gpio]);
	} else if (GPIO_ISOUT(pin)) {
		ret =
		    gpio_set_bit(output ? PIO_MUX_SET : PIO_MUX_CLR,
				 outp_to_mux_map[gpio]);
	} else if (GPIO_ISMUX(pin)) {
		ret = gpio_set_bit(output ? PIO_MUX_SET : PIO_MUX_CLR, gpio);
	}
	gpio_unlock();
	return ret;
}
Exemple #6
0
/* Write Value to output */
int pnx4008_gpio_write_pin(unsigned short pin, int output)
{
	int gpio = GPIO_BIT_MASK(pin);
	int ret = -EFAULT;

	gpio_lock();
	if (GPIO_ISOUT(pin)) {
		printk( "writing '%x' to '%x'\n",
				gpio, output ? PIO_OUTP_SET : PIO_OUTP_CLR );
		ret = gpio_set_bit(output ? PIO_OUTP_SET : PIO_OUTP_CLR, gpio);
	} else if (GPIO_ISRAM(pin)) {
		if (gpio_read_bit(PIO_DRV_STATE, gpio) > 0)
			ret = gpio_set_bit(output ? PIO_SDOUTP_SET :
					   PIO_SDOUTP_CLR, gpio);
	} else if (GPIO_ISBID(pin)) {
		if (gpio_read_bit(PIO_DRV_STATE, gpio) > 0)
			ret = gpio_set_bit(output ? PIO_OUTP_SET :
					   PIO_OUTP_CLR, gpio);
	}
	gpio_unlock();
	return ret;
}
Exemple #7
0
int pnx4008_gpio_register_pin(unsigned short pin)
{
	unsigned long bit = GPIO_BIT(pin);
	int ret = -EBUSY;	/* Already in use */

	gpio_lock();

	if (GPIO_ISBID(pin)) {
		if (access_map[GPIO_INDEX] & bit)
			goto out;
		access_map[GPIO_INDEX] |= bit;

	} else if (GPIO_ISRAM(pin)) {
		if (access_map[GPIO_INDEX] & bit)
			goto out;
		access_map[GPIO_INDEX] |= bit;

	} else if (GPIO_ISMUX(pin)) {
		if (access_map[MUX_INDEX] & bit)
			goto out;
		access_map[MUX_INDEX] |= bit;

	} else if (GPIO_ISOUT(pin)) {
		if (access_map[OUTP_INDEX] & bit)
			goto out;
		access_map[OUTP_INDEX] |= bit;

	} else if (GPIO_ISIN(pin)) {
		if (access_map[INP_INDEX] & bit)
			goto out;
		access_map[INP_INDEX] |= bit;
	} else
		goto out;
	ret = 0;

out:
	gpio_unlock();
	return ret;
}
Exemple #8
0
unsigned long pnx4008_gpio_read_pin(unsigned short pin)
{
	unsigned long ret = -EFAULT;
	int gpio = GPIO_BIT_MASK(pin);
	gpio_lock();
	if (GPIO_ISOUT(pin)) {
		ret = gpio_read_bit(PIO_OUTP_STATE, gpio);
	} else if (GPIO_ISRAM(pin)) {
		if (gpio_read_bit(PIO_DRV_STATE, gpio) == 0) {
			ret = gpio_read_bit(PIO_SDINP_STATE, gpio);
		}
	} else if (GPIO_ISBID(pin)) {
		ret = gpio_read_bit(PIO_DRV_STATE, gpio);
		if (ret > 0)
			ret = gpio_read_bit(PIO_OUTP_STATE, gpio);
		else if (ret == 0)
			ret =
			    gpio_read_bit(PIO_INP_STATE, gpio_to_inp_map[gpio]);
	} else if (GPIO_ISIN(pin)) {
		ret = gpio_read_bit(PIO_INP_STATE, gpio);
	}
	gpio_unlock();
	return ret;
}
Exemple #9
0
/****************************************************
 * FUNCTION: Mutex unlock
 * PARAMS: port - GPIO port # (0 ~ 31)
 * RETURN: N/A
 ***************************************************/
void GPIO_PortUnlock(int port)
{
	UNUSED(port);
	gpio_unlock();
}