2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
3 * Copyright (c) 2002-2008 Atheros Communications, Inc.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * $FreeBSD: head/sys/dev/ath/ath_hal/ar5212/ar5212_gpio.c 188974 2009-02-24 00:12:16Z sam $
23 #include "ah_internal.h"
26 #include "ah_desc.h" /* NB: for HAL_PHYERR* */
29 #include "ar5212/ar5212.h"
30 #include "ar5212/ar5212reg.h"
31 #include "ar5212/ar5212phy.h"
33 #define AR_NUM_GPIO 6 /* 6 GPIO pins */
34 #define AR_GPIOD_MASK 0x0000002F /* GPIO data reg r/w mask */
37 * Configure GPIO Output lines
40 ar5212GpioCfgOutput(struct ath_hal *ah, uint32_t gpio, HAL_GPIO_MUX_TYPE type)
42 HALASSERT(gpio < AR_NUM_GPIO);
45 * NB: AR_GPIOCR_CR_A(pin) is all 1's so there's no need
46 * to clear the field before or'ing in the new value.
48 OS_REG_WRITE(ah, AR_GPIOCR,
49 OS_REG_READ(ah, AR_GPIOCR) | AR_GPIOCR_CR_A(gpio));
55 * Configure GPIO Input lines
58 ar5212GpioCfgInput(struct ath_hal *ah, uint32_t gpio)
60 HALASSERT(gpio < AR_NUM_GPIO);
62 OS_REG_WRITE(ah, AR_GPIOCR,
63 (OS_REG_READ(ah, AR_GPIOCR) &~ AR_GPIOCR_CR_A(gpio))
64 | AR_GPIOCR_CR_N(gpio));
70 * Once configured for I/O - set output lines
73 ar5212GpioSet(struct ath_hal *ah, uint32_t gpio, uint32_t val)
77 HALASSERT(gpio < AR_NUM_GPIO);
79 reg = OS_REG_READ(ah, AR_GPIODO);
81 reg |= (val&1) << gpio;
83 OS_REG_WRITE(ah, AR_GPIODO, reg);
88 * Once configured for I/O - get input lines
91 ar5212GpioGet(struct ath_hal *ah, uint32_t gpio)
93 if (gpio < AR_NUM_GPIO) {
94 uint32_t val = OS_REG_READ(ah, AR_GPIODI);
95 val = ((val & AR_GPIOD_MASK) >> gpio) & 0x1;
103 * Set the GPIO Interrupt
106 ar5212GpioSetIntr(struct ath_hal *ah, u_int gpio, uint32_t ilevel)
110 /* XXX bounds check gpio */
111 val = OS_REG_READ(ah, AR_GPIOCR);
112 val &= ~(AR_GPIOCR_CR_A(gpio) |
113 AR_GPIOCR_INT_MASK | AR_GPIOCR_INT_ENA | AR_GPIOCR_INT_SEL);
114 val |= AR_GPIOCR_CR_N(gpio) | AR_GPIOCR_INT(gpio) | AR_GPIOCR_INT_ENA;
116 val |= AR_GPIOCR_INT_SELH; /* interrupt on pin high */
118 val |= AR_GPIOCR_INT_SELL; /* interrupt on pin low */
120 /* Don't need to change anything for low level interrupt. */
121 OS_REG_WRITE(ah, AR_GPIOCR, val);
123 /* Change the interrupt mask. */
124 (void) ar5212SetInterrupts(ah, AH5212(ah)->ah_maskReg | HAL_INT_GPIO);