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https://github.com/proski/madwifi
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5702465321
git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@3978 0192ed92-7a03-0410-a25b-9323aeb14dbd
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/*
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* Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
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* Copyright (c) 2002-2008 Atheros Communications, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* $Id: ar5315_gpio.c,v 1.3 2008/11/10 04:08:04 sam Exp $
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*/
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#include "opt_ah.h"
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#if (AH_SUPPORT_2316 || AH_SUPPORT_2317)
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#include "ah.h"
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#include "ah_internal.h"
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#include "ah_devid.h"
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#include "ar5312/ar5312.h"
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#include "ar5312/ar5312reg.h"
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#include "ar5312/ar5312phy.h"
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#define AR_NUM_GPIO 7 /* 6 GPIO pins */
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#define AR5315_GPIOD_MASK 0x0000007F /* GPIO data reg r/w mask */
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/*
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* Configure GPIO Output lines
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*/
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HAL_BOOL
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ar5315GpioCfgOutput(struct ath_hal *ah, uint32_t gpio)
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{
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uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
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HALASSERT(gpio < AR_NUM_GPIO);
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OS_REG_WRITE(ah, gpioOffset+AR5315_GPIODIR,
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(OS_REG_READ(ah, gpioOffset+AR5315_GPIODIR) &~ AR5315_GPIODIR_M(gpio))
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| AR5315_GPIODIR_O(gpio));
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return AH_TRUE;
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}
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/*
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* Configure GPIO Input lines
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*/
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HAL_BOOL
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ar5315GpioCfgInput(struct ath_hal *ah, uint32_t gpio)
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{
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uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
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HALASSERT(gpio < AR_NUM_GPIO);
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OS_REG_WRITE(ah, gpioOffset+AR5315_GPIODIR,
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(OS_REG_READ(ah, gpioOffset+AR5315_GPIODIR) &~ AR5315_GPIODIR_M(gpio))
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| AR5315_GPIODIR_I(gpio));
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return AH_TRUE;
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}
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/*
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* Once configured for I/O - set output lines
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*/
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HAL_BOOL
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ar5315GpioSet(struct ath_hal *ah, uint32_t gpio, uint32_t val)
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{
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uint32_t reg;
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uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
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HALASSERT(gpio < AR_NUM_GPIO);
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reg = OS_REG_READ(ah, gpioOffset+AR5315_GPIODO);
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reg &= ~(1 << gpio);
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reg |= (val&1) << gpio;
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OS_REG_WRITE(ah, gpioOffset+AR5315_GPIODO, reg);
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return AH_TRUE;
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}
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/*
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* Once configured for I/O - get input lines
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*/
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uint32_t
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ar5315GpioGet(struct ath_hal *ah, uint32_t gpio)
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{
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uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
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if (gpio < AR_NUM_GPIO) {
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uint32_t val = OS_REG_READ(ah, gpioOffset+AR5315_GPIODI);
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val = ((val & AR5315_GPIOD_MASK) >> gpio) & 0x1;
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return val;
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} else {
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return 0xffffffff;
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}
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}
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/*
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* Set the GPIO Interrupt
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*/
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void
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ar5315GpioSetIntr(struct ath_hal *ah, u_int gpio, uint32_t ilevel)
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{
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uint32_t val;
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uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
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/* XXX bounds check gpio */
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val = OS_REG_READ(ah, gpioOffset+AR5315_GPIOINT);
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val &= ~(AR5315_GPIOINT_M | AR5315_GPIOINTLVL_M);
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val |= gpio << AR5315_GPIOINT_S;
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if (ilevel)
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val |= 2 << AR5315_GPIOINTLVL_S; /* interrupt on pin high */
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else
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val |= 1 << AR5315_GPIOINTLVL_S; /* interrupt on pin low */
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/* Don't need to change anything for low level interrupt. */
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OS_REG_WRITE(ah, gpioOffset+AR5315_GPIOINT, val);
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/* Change the interrupt mask. */
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(void) ar5212SetInterrupts(ah, AH5212(ah)->ah_maskReg | HAL_INT_GPIO);
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}
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#endif /* AH_SUPPORT_2316 || AH_SUPPORT_2317 */
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