ath5k_gpio.c File Reference

#include "ath5k.h"
#include "reg.h"
#include "base.h"

Go to the source code of this file.

Functions
	FILE_LICENCE (MIT)
int	ath5k_hw_set_gpio_input (struct ath5k_hw *ah, u32 gpio)
int	ath5k_hw_set_gpio_output (struct ath5k_hw *ah, u32 gpio)
u32	ath5k_hw_get_gpio (struct ath5k_hw *ah, u32 gpio)
int	ath5k_hw_set_gpio (struct ath5k_hw *ah, u32 gpio, u32 val)
void	ath5k_hw_set_gpio_intr (struct ath5k_hw *ah, unsigned int gpio, u32 interrupt_level)

---

Function Documentation

FILE_LICENCE

(

MIT

)

int ath5k_hw_set_gpio_input	(	struct ath5k_hw *	ah,
		u32	gpio
	)

Definition at line 34 of file ath5k_gpio.c.

References AR5K_GPIOCR, AR5K_GPIOCR_IN, AR5K_GPIOCR_OUT, AR5K_NUM_GPIO, ath5k_hw_reg_read(), ath5k_hw_reg_write(), and EINVAL.

Referenced by ath5k_hw_reset(), and ath5k_rfkill_set_intr().

{
        if (gpio >= AR5K_NUM_GPIO)
                return -EINVAL;

        ath5k_hw_reg_write(ah,
                (ath5k_hw_reg_read(ah, AR5K_GPIOCR) & ~AR5K_GPIOCR_OUT(gpio))
                | AR5K_GPIOCR_IN(gpio), AR5K_GPIOCR);

        return 0;
}

int ath5k_hw_set_gpio_output	(	struct ath5k_hw *	ah,
		u32	gpio
	)

Definition at line 49 of file ath5k_gpio.c.

References AR5K_GPIOCR, AR5K_GPIOCR_OUT, AR5K_NUM_GPIO, ath5k_hw_reg_read(), ath5k_hw_reg_write(), and EINVAL.

Referenced by ath5k_rfkill_disable(), and ath5k_rfkill_enable().

{
        if (gpio >= AR5K_NUM_GPIO)
                return -EINVAL;

        ath5k_hw_reg_write(ah,
                (ath5k_hw_reg_read(ah, AR5K_GPIOCR) & ~AR5K_GPIOCR_OUT(gpio))
                | AR5K_GPIOCR_OUT(gpio), AR5K_GPIOCR);

        return 0;
}

u32 ath5k_hw_get_gpio	(	struct ath5k_hw *	ah,
		u32	gpio
	)

Definition at line 64 of file ath5k_gpio.c.

References AR5K_GPIODI, AR5K_GPIODI_M, AR5K_NUM_GPIO, and ath5k_hw_reg_read().

Referenced by ath5k_hw_reset(), ath5k_is_rfkill_set(), and ath5k_rfkill_set_intr().

{
        if (gpio >= AR5K_NUM_GPIO)
                return 0xffffffff;

        /* GPIO input magic */
        return ((ath5k_hw_reg_read(ah, AR5K_GPIODI) & AR5K_GPIODI_M) >> gpio) &
                0x1;
}

int ath5k_hw_set_gpio	(	struct ath5k_hw *	ah,
		u32	gpio,
		u32	val
	)

Definition at line 77 of file ath5k_gpio.c.

References AR5K_GPIODO, AR5K_NUM_GPIO, ath5k_hw_reg_read(), ath5k_hw_reg_write(), EINVAL, and u32.

Referenced by ath5k_rfkill_disable(), and ath5k_rfkill_enable().

{
        u32 data;

        if (gpio >= AR5K_NUM_GPIO)
                return -EINVAL;

        /* GPIO output magic */
        data = ath5k_hw_reg_read(ah, AR5K_GPIODO);

        data &= ~(1 << gpio);
        data |= (val & 1) << gpio;

        ath5k_hw_reg_write(ah, data, AR5K_GPIODO);

        return 0;
}

void ath5k_hw_set_gpio_intr	(	struct ath5k_hw *	ah,
		unsigned int	gpio,
		u32	interrupt_level
	)

Definition at line 98 of file ath5k_gpio.c.

References ath5k_hw::ah_imr, AR5K_GPIOCR, AR5K_GPIOCR_INT_ENA, AR5K_GPIOCR_INT_SEL, AR5K_GPIOCR_INT_SELH, AR5K_GPIOCR_OUT, AR5K_IMR_GPIO, AR5K_NUM_GPIO, AR5K_PIMR, AR5K_REG_ENABLE_BITS, ath5k_hw_reg_read(), ath5k_hw_reg_write(), and u32.

Referenced by ath5k_hw_reset(), and ath5k_rfkill_set_intr().

{
        u32 data;

        if (gpio >= AR5K_NUM_GPIO)
                return;

        /*
         * Set the GPIO interrupt
         */
        data = (ath5k_hw_reg_read(ah, AR5K_GPIOCR) &
                ~(AR5K_GPIOCR_INT_SEL(gpio) | AR5K_GPIOCR_INT_SELH |
                AR5K_GPIOCR_INT_ENA | AR5K_GPIOCR_OUT(gpio))) |
                (AR5K_GPIOCR_INT_SEL(gpio) | AR5K_GPIOCR_INT_ENA);

        ath5k_hw_reg_write(ah, interrupt_level ? data :
                (data | AR5K_GPIOCR_INT_SELH), AR5K_GPIOCR);

        ah->ah_imr |= AR5K_IMR_GPIO;

        /* Enable GPIO interrupts */
        AR5K_REG_ENABLE_BITS(ah, AR5K_PIMR, AR5K_IMR_GPIO);
}