1 /*- 2 * SPDX-License-Identifier: ISC 3 * 4 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 5 * Copyright (c) 2002-2008 Atheros Communications, Inc. 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 * 19 * $FreeBSD$ 20 */ 21 #include "opt_ah.h" 22 23 #ifdef AH_SUPPORT_AR5312 24 25 #include "ah.h" 26 #include "ah_internal.h" 27 #include "ah_devid.h" 28 29 #include "ar5312/ar5312.h" 30 #include "ar5312/ar5312reg.h" 31 #include "ar5312/ar5312phy.h" 32 33 #define AR_NUM_GPIO 6 /* 6 GPIO pins */ 34 #define AR5312_GPIOD_MASK 0x0000002F /* GPIO data reg r/w mask */ 35 36 /* 37 * Configure GPIO Output lines 38 */ 39 HAL_BOOL 40 ar5312GpioCfgOutput(struct ath_hal *ah, uint32_t gpio, HAL_GPIO_MUX_TYPE type) 41 { 42 uint32_t gpioOffset = (AR5312_GPIO_BASE - ((uint32_t) ah->ah_sh)); 43 44 HALASSERT(gpio < AR_NUM_GPIO); 45 46 OS_REG_WRITE(ah, gpioOffset+AR5312_GPIOCR, 47 (OS_REG_READ(ah, gpioOffset+AR5312_GPIOCR) &~ AR_GPIOCR_CR_A(gpio)) 48 | AR_GPIOCR_CR_A(gpio)); 49 50 return AH_TRUE; 51 } 52 53 /* 54 * Configure GPIO Input lines 55 */ 56 HAL_BOOL 57 ar5312GpioCfgInput(struct ath_hal *ah, uint32_t gpio) 58 { 59 uint32_t gpioOffset = (AR5312_GPIO_BASE - ((uint32_t) ah->ah_sh)); 60 61 HALASSERT(gpio < AR_NUM_GPIO); 62 63 OS_REG_WRITE(ah, gpioOffset+AR5312_GPIOCR, 64 (OS_REG_READ(ah, gpioOffset+AR5312_GPIOCR) &~ AR_GPIOCR_CR_A(gpio)) 65 | AR_GPIOCR_CR_N(gpio)); 66 67 return AH_TRUE; 68 } 69 70 /* 71 * Once configured for I/O - set output lines 72 */ 73 HAL_BOOL 74 ar5312GpioSet(struct ath_hal *ah, uint32_t gpio, uint32_t val) 75 { 76 uint32_t reg; 77 uint32_t gpioOffset = (AR5312_GPIO_BASE - ((uint32_t) ah->ah_sh)); 78 79 HALASSERT(gpio < AR_NUM_GPIO); 80 81 reg = OS_REG_READ(ah, gpioOffset+AR5312_GPIODO); 82 reg &= ~(1 << gpio); 83 reg |= (val&1) << gpio; 84 85 OS_REG_WRITE(ah, gpioOffset+AR5312_GPIODO, reg); 86 return AH_TRUE; 87 } 88 89 /* 90 * Once configured for I/O - get input lines 91 */ 92 uint32_t 93 ar5312GpioGet(struct ath_hal *ah, uint32_t gpio) 94 { 95 uint32_t gpioOffset = (AR5312_GPIO_BASE - ((uint32_t) ah->ah_sh)); 96 97 if (gpio < AR_NUM_GPIO) { 98 uint32_t val = OS_REG_READ(ah, gpioOffset+AR5312_GPIODI); 99 val = ((val & AR5312_GPIOD_MASK) >> gpio) & 0x1; 100 return val; 101 } else { 102 return 0xffffffff; 103 } 104 } 105 106 /* 107 * Set the GPIO Interrupt 108 */ 109 void 110 ar5312GpioSetIntr(struct ath_hal *ah, u_int gpio, uint32_t ilevel) 111 { 112 uint32_t val; 113 uint32_t gpioOffset = (AR5312_GPIO_BASE - ((uint32_t) ah->ah_sh)); 114 115 /* XXX bounds check gpio */ 116 val = OS_REG_READ(ah, gpioOffset+AR5312_GPIOCR); 117 val &= ~(AR_GPIOCR_CR_A(gpio) | 118 AR_GPIOCR_INT_MASK | AR_GPIOCR_INT_ENA | AR_GPIOCR_INT_SEL); 119 val |= AR_GPIOCR_CR_N(gpio) | AR_GPIOCR_INT(gpio) | AR_GPIOCR_INT_ENA; 120 if (ilevel) 121 val |= AR_GPIOCR_INT_SELH; /* interrupt on pin high */ 122 else 123 val |= AR_GPIOCR_INT_SELL; /* interrupt on pin low */ 124 125 /* Don't need to change anything for low level interrupt. */ 126 OS_REG_WRITE(ah, gpioOffset+AR5312_GPIOCR, val); 127 128 /* Change the interrupt mask. */ 129 (void) ar5212SetInterrupts(ah, AH5212(ah)->ah_maskReg | HAL_INT_GPIO); 130 } 131 132 #endif /* AH_SUPPORT_AR5312 */ 133