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 #include "base.h" 27 28 /* 29 * Set led state 30 */ 31 void ath5k_hw_set_ledstate(struct ath5k_hw *ah, unsigned int state) 32 { 33 u32 led; 34 /*5210 has different led mode handling*/ 35 u32 led_5210; 36 37 ATH5K_TRACE(ah->ah_sc); 38 39 /*Reset led status*/ 40 if (ah->ah_version != AR5K_AR5210) 41 AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG, 42 AR5K_PCICFG_LEDMODE | AR5K_PCICFG_LED); 43 else 44 AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_LED); 45 46 /* 47 * Some blinking values, define at your wish 48 */ 49 switch (state) { 50 case AR5K_LED_SCAN: 51 case AR5K_LED_AUTH: 52 led = AR5K_PCICFG_LEDMODE_PROP | AR5K_PCICFG_LED_PEND; 53 led_5210 = AR5K_PCICFG_LED_PEND | AR5K_PCICFG_LED_BCTL; 54 break; 55 56 case AR5K_LED_INIT: 57 led = AR5K_PCICFG_LEDMODE_PROP | AR5K_PCICFG_LED_NONE; 58 led_5210 = AR5K_PCICFG_LED_PEND; 59 break; 60 61 case AR5K_LED_ASSOC: 62 case AR5K_LED_RUN: 63 led = AR5K_PCICFG_LEDMODE_PROP | AR5K_PCICFG_LED_ASSOC; 64 led_5210 = AR5K_PCICFG_LED_ASSOC; 65 break; 66 67 default: 68 led = AR5K_PCICFG_LEDMODE_PROM | AR5K_PCICFG_LED_NONE; 69 led_5210 = AR5K_PCICFG_LED_PEND; 70 break; 71 } 72 73 /*Write new status to the register*/ 74 if (ah->ah_version != AR5K_AR5210) 75 AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, led); 76 else 77 AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, led_5210); 78 } 79 80 /* 81 * Set GPIO inputs 82 */ 83 int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio) 84 { 85 ATH5K_TRACE(ah->ah_sc); 86 if (gpio >= AR5K_NUM_GPIO) 87 return -EINVAL; 88 89 ath5k_hw_reg_write(ah, 90 (ath5k_hw_reg_read(ah, AR5K_GPIOCR) & ~AR5K_GPIOCR_OUT(gpio)) 91 | AR5K_GPIOCR_IN(gpio), AR5K_GPIOCR); 92 93 return 0; 94 } 95 96 /* 97 * Set GPIO outputs 98 */ 99 int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio) 100 { 101 ATH5K_TRACE(ah->ah_sc); 102 if (gpio >= AR5K_NUM_GPIO) 103 return -EINVAL; 104 105 ath5k_hw_reg_write(ah, 106 (ath5k_hw_reg_read(ah, AR5K_GPIOCR) & ~AR5K_GPIOCR_OUT(gpio)) 107 | AR5K_GPIOCR_OUT(gpio), AR5K_GPIOCR); 108 109 return 0; 110 } 111 112 /* 113 * Get GPIO state 114 */ 115 u32 ath5k_hw_get_gpio(struct ath5k_hw *ah, u32 gpio) 116 { 117 ATH5K_TRACE(ah->ah_sc); 118 if (gpio >= AR5K_NUM_GPIO) 119 return 0xffffffff; 120 121 /* GPIO input magic */ 122 return ((ath5k_hw_reg_read(ah, AR5K_GPIODI) & AR5K_GPIODI_M) >> gpio) & 123 0x1; 124 } 125 126 /* 127 * Set GPIO state 128 */ 129 int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val) 130 { 131 u32 data; 132 ATH5K_TRACE(ah->ah_sc); 133 134 if (gpio >= AR5K_NUM_GPIO) 135 return -EINVAL; 136 137 /* GPIO output magic */ 138 data = ath5k_hw_reg_read(ah, AR5K_GPIODO); 139 140 data &= ~(1 << gpio); 141 data |= (val & 1) << gpio; 142 143 ath5k_hw_reg_write(ah, data, AR5K_GPIODO); 144 145 return 0; 146 } 147 148 /* 149 * Initialize the GPIO interrupt (RFKill switch) 150 */ 151 void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio, 152 u32 interrupt_level) 153 { 154 u32 data; 155 156 ATH5K_TRACE(ah->ah_sc); 157 if (gpio >= AR5K_NUM_GPIO) 158 return; 159 160 /* 161 * Set the GPIO interrupt 162 */ 163 data = (ath5k_hw_reg_read(ah, AR5K_GPIOCR) & 164 ~(AR5K_GPIOCR_INT_SEL(gpio) | AR5K_GPIOCR_INT_SELH | 165 AR5K_GPIOCR_INT_ENA | AR5K_GPIOCR_OUT(gpio))) | 166 (AR5K_GPIOCR_INT_SEL(gpio) | AR5K_GPIOCR_INT_ENA); 167 168 ath5k_hw_reg_write(ah, interrupt_level ? data : 169 (data | AR5K_GPIOCR_INT_SELH), AR5K_GPIOCR); 170 171 ah->ah_imr |= AR5K_IMR_GPIO; 172 173 /* Enable GPIO interrupts */ 174 AR5K_REG_ENABLE_BITS(ah, AR5K_PIMR, AR5K_IMR_GPIO); 175 } 176 177