1 /* 2 * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org> 3 * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com> 4 * 5 * Permission to use, copy, modify, and 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. 8 * 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. 16 * 17 */ 18 19 /****************\ 20 GPIO Functions 21 \****************/ 22 23 #include "ath5k.h" 24 #include "reg.h" 25 #include "debug.h" 26 27 /* 28 * Set led state 29 */ 30 void ath5k_hw_set_ledstate(struct ath5k_hw *ah, unsigned int state) 31 { 32 u32 led; 33 /*5210 has different led mode handling*/ 34 u32 led_5210; 35 36 /*Reset led status*/ 37 if (ah->ah_version != AR5K_AR5210) 38 AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG, 39 AR5K_PCICFG_LEDMODE | AR5K_PCICFG_LED); 40 else 41 AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_LED); 42 43 /* 44 * Some blinking values, define at your wish 45 */ 46 switch (state) { 47 case AR5K_LED_SCAN: 48 case AR5K_LED_AUTH: 49 led = AR5K_PCICFG_LEDMODE_PROP | AR5K_PCICFG_LED_PEND; 50 led_5210 = AR5K_PCICFG_LED_PEND | AR5K_PCICFG_LED_BCTL; 51 break; 52 53 case AR5K_LED_INIT: 54 led = AR5K_PCICFG_LEDMODE_PROP | AR5K_PCICFG_LED_NONE; 55 led_5210 = AR5K_PCICFG_LED_PEND; 56 break; 57 58 case AR5K_LED_ASSOC: 59 case AR5K_LED_RUN: 60 led = AR5K_PCICFG_LEDMODE_PROP | AR5K_PCICFG_LED_ASSOC; 61 led_5210 = AR5K_PCICFG_LED_ASSOC; 62 break; 63 64 default: 65 led = AR5K_PCICFG_LEDMODE_PROM | AR5K_PCICFG_LED_NONE; 66 led_5210 = AR5K_PCICFG_LED_PEND; 67 break; 68 } 69 70 /*Write new status to the register*/ 71 if (ah->ah_version != AR5K_AR5210) 72 AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, led); 73 else 74 AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, led_5210); 75 } 76 77 /* 78 * Set GPIO inputs 79 */ 80 int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio) 81 { 82 if (gpio >= AR5K_NUM_GPIO) 83 return -EINVAL; 84 85 ath5k_hw_reg_write(ah, 86 (ath5k_hw_reg_read(ah, AR5K_GPIOCR) & ~AR5K_GPIOCR_OUT(gpio)) 87 | AR5K_GPIOCR_IN(gpio), AR5K_GPIOCR); 88 89 return 0; 90 } 91 92 /* 93 * Set GPIO outputs 94 */ 95 int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio) 96 { 97 if (gpio >= AR5K_NUM_GPIO) 98 return -EINVAL; 99 100 ath5k_hw_reg_write(ah, 101 (ath5k_hw_reg_read(ah, AR5K_GPIOCR) & ~AR5K_GPIOCR_OUT(gpio)) 102 | AR5K_GPIOCR_OUT(gpio), AR5K_GPIOCR); 103 104 return 0; 105 } 106 107 /* 108 * Get GPIO state 109 */ 110 u32 ath5k_hw_get_gpio(struct ath5k_hw *ah, u32 gpio) 111 { 112 if (gpio >= AR5K_NUM_GPIO) 113 return 0xffffffff; 114 115 /* GPIO input magic */ 116 return ((ath5k_hw_reg_read(ah, AR5K_GPIODI) & AR5K_GPIODI_M) >> gpio) & 117 0x1; 118 } 119 120 /* 121 * Set GPIO state 122 */ 123 int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val) 124 { 125 u32 data; 126 127 if (gpio >= AR5K_NUM_GPIO) 128 return -EINVAL; 129 130 /* GPIO output magic */ 131 data = ath5k_hw_reg_read(ah, AR5K_GPIODO); 132 133 data &= ~(1 << gpio); 134 data |= (val & 1) << gpio; 135 136 ath5k_hw_reg_write(ah, data, AR5K_GPIODO); 137 138 return 0; 139 } 140 141 /* 142 * Initialize the GPIO interrupt (RFKill switch) 143 */ 144 void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio, 145 u32 interrupt_level) 146 { 147 u32 data; 148 149 if (gpio >= AR5K_NUM_GPIO) 150 return; 151 152 /* 153 * Set the GPIO interrupt 154 */ 155 data = (ath5k_hw_reg_read(ah, AR5K_GPIOCR) & 156 ~(AR5K_GPIOCR_INT_SEL(gpio) | AR5K_GPIOCR_INT_SELH | 157 AR5K_GPIOCR_INT_ENA | AR5K_GPIOCR_OUT(gpio))) | 158 (AR5K_GPIOCR_INT_SEL(gpio) | AR5K_GPIOCR_INT_ENA); 159 160 ath5k_hw_reg_write(ah, interrupt_level ? data : 161 (data | AR5K_GPIOCR_INT_SELH), AR5K_GPIOCR); 162 163 ah->ah_imr |= AR5K_IMR_GPIO; 164 165 /* Enable GPIO interrupts */ 166 AR5K_REG_ENABLE_BITS(ah, AR5K_PIMR, AR5K_IMR_GPIO); 167 } 168 169