hwgpio.c revision 1.1.2.2
1 1.1.2.2 martin /* $NetBSD: hwgpio.c,v 1.1.2.2 2024/02/03 11:47:04 martin Exp $ */ 2 1.1.2.2 martin 3 1.1.2.2 martin /*- 4 1.1.2.2 martin * Copyright (c) 2024 Jared McNeill <jmcneill (at) invisible.ca> 5 1.1.2.2 martin * All rights reserved. 6 1.1.2.2 martin * 7 1.1.2.2 martin * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 martin * modification, are permitted provided that the following conditions 9 1.1.2.2 martin * are met: 10 1.1.2.2 martin * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 martin * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 martin * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 martin * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 martin * documentation and/or other materials provided with the distribution. 15 1.1.2.2 martin * 16 1.1.2.2 martin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.1.2.2 martin * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.1.2.2 martin * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.1.2.2 martin * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.1.2.2 martin * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.1.2.2 martin * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.1.2.2 martin * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.1.2.2 martin * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.1.2.2 martin * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1.2.2 martin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1.2.2 martin * SUCH DAMAGE. 27 1.1.2.2 martin */ 28 1.1.2.2 martin 29 1.1.2.2 martin #include <sys/cdefs.h> 30 1.1.2.2 martin __KERNEL_RCSID(0, "$NetBSD: hwgpio.c,v 1.1.2.2 2024/02/03 11:47:04 martin Exp $"); 31 1.1.2.2 martin 32 1.1.2.2 martin #include <sys/param.h> 33 1.1.2.2 martin #include <sys/bus.h> 34 1.1.2.2 martin #include <sys/cpu.h> 35 1.1.2.2 martin #include <sys/device.h> 36 1.1.2.2 martin #include <sys/kmem.h> 37 1.1.2.2 martin #include <sys/bitops.h> 38 1.1.2.2 martin #include <sys/gpio.h> 39 1.1.2.2 martin 40 1.1.2.2 martin #include <dev/gpio/gpiovar.h> 41 1.1.2.2 martin 42 1.1.2.2 martin #include <machine/wii.h> 43 1.1.2.2 martin 44 1.1.2.2 martin #include "hollywood.h" 45 1.1.2.2 martin 46 1.1.2.2 martin #define PIN(_num, _name, _caps) \ 47 1.1.2.2 martin { .pin_num = (_num), \ 48 1.1.2.2 martin .pin_caps = (_caps), \ 49 1.1.2.2 martin .pin_defname = (_name), \ 50 1.1.2.2 martin } 51 1.1.2.2 martin static gpio_pin_t hwgpio_pins[] = { 52 1.1.2.2 martin PIN( 0, "POWER", GPIO_PIN_INPUT), 53 1.1.2.2 martin PIN( 1, "SHUTDOWN", GPIO_PIN_OUTPUT), 54 1.1.2.2 martin PIN( 2, "FAN", GPIO_PIN_OUTPUT), 55 1.1.2.2 martin PIN( 3, "DC_DC", GPIO_PIN_OUTPUT), 56 1.1.2.2 martin PIN( 4, "DI_SPIN", GPIO_PIN_OUTPUT), 57 1.1.2.2 martin PIN( 5, "SLOT_LED", GPIO_PIN_OUTPUT), 58 1.1.2.2 martin PIN( 6, "EJECT_BTN", GPIO_PIN_INPUT), 59 1.1.2.2 martin PIN( 7, "SLOT_IN", GPIO_PIN_INPUT), 60 1.1.2.2 martin PIN( 8, "SENSOR_BAR", GPIO_PIN_OUTPUT), 61 1.1.2.2 martin PIN( 9, "DO_EJECT", GPIO_PIN_OUTPUT), 62 1.1.2.2 martin PIN(10, "EEP_CS", GPIO_PIN_OUTPUT), 63 1.1.2.2 martin PIN(11, "EEP_CLK", GPIO_PIN_OUTPUT), 64 1.1.2.2 martin PIN(12, "EEP_MOSI", GPIO_PIN_OUTPUT), 65 1.1.2.2 martin PIN(13, "EEP_MISO", GPIO_PIN_INPUT), 66 1.1.2.2 martin PIN(14, "AVE_SCL", GPIO_PIN_OUTPUT), 67 1.1.2.2 martin PIN(15, "AVE_SDA", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 68 1.1.2.2 martin PIN(16, "DEBUG0", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 69 1.1.2.2 martin PIN(17, "DEBUG1", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 70 1.1.2.2 martin PIN(18, "DEBUG2", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 71 1.1.2.2 martin PIN(19, "DEBUG3", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 72 1.1.2.2 martin PIN(20, "DEBUG4", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 73 1.1.2.2 martin PIN(21, "DEBUG5", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 74 1.1.2.2 martin PIN(22, "DEBUG6", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 75 1.1.2.2 martin PIN(23, "DEBUG7", GPIO_PIN_INPUT | GPIO_PIN_OUTPUT), 76 1.1.2.2 martin }; 77 1.1.2.2 martin #undef PIN 78 1.1.2.2 martin 79 1.1.2.2 martin struct hwgpio_softc { 80 1.1.2.2 martin struct gpio_chipset_tag sc_gp; 81 1.1.2.2 martin }; 82 1.1.2.2 martin 83 1.1.2.2 martin #define RD4(reg) in32(reg) 84 1.1.2.2 martin #define WR4(reg, val) out32((reg), (val)) 85 1.1.2.2 martin 86 1.1.2.2 martin static int 87 1.1.2.2 martin hwgpio_pin_read(void *priv, int pin) 88 1.1.2.2 martin { 89 1.1.2.2 martin return (RD4(HW_GPIOB_IN) & __BIT(pin)) != 0; 90 1.1.2.2 martin } 91 1.1.2.2 martin 92 1.1.2.2 martin static void 93 1.1.2.2 martin hwgpio_pin_write(void *priv, int pin, int value) 94 1.1.2.2 martin { 95 1.1.2.2 martin uint32_t out; 96 1.1.2.2 martin int s; 97 1.1.2.2 martin 98 1.1.2.2 martin s = splhigh(); 99 1.1.2.2 martin out = RD4(HW_GPIOB_OUT); 100 1.1.2.2 martin if (value) { 101 1.1.2.2 martin out |= __BIT(pin); 102 1.1.2.2 martin } else { 103 1.1.2.2 martin out &= ~__BIT(pin); 104 1.1.2.2 martin } 105 1.1.2.2 martin WR4(HW_GPIOB_OUT, out); 106 1.1.2.2 martin splx(s); 107 1.1.2.2 martin } 108 1.1.2.2 martin 109 1.1.2.2 martin static void 110 1.1.2.2 martin hwgpio_pin_ctl(void *priv, int pin, int flags) 111 1.1.2.2 martin { 112 1.1.2.2 martin uint32_t dir; 113 1.1.2.2 martin int s; 114 1.1.2.2 martin 115 1.1.2.2 martin s = splhigh(); 116 1.1.2.2 martin dir = RD4(HW_GPIOB_DIR); 117 1.1.2.2 martin if (flags & GPIO_PIN_OUTPUT) { 118 1.1.2.2 martin dir |= __BIT(pin); 119 1.1.2.2 martin } else { 120 1.1.2.2 martin dir &= ~__BIT(pin); 121 1.1.2.2 martin } 122 1.1.2.2 martin WR4(HW_GPIOB_DIR, dir); 123 1.1.2.2 martin splx(s); 124 1.1.2.2 martin } 125 1.1.2.2 martin 126 1.1.2.2 martin static int 127 1.1.2.2 martin hwgpio_match(device_t parent, cfdata_t cf, void *aux) 128 1.1.2.2 martin { 129 1.1.2.2 martin return 1; 130 1.1.2.2 martin } 131 1.1.2.2 martin 132 1.1.2.2 martin static void 133 1.1.2.2 martin hwgpio_attach(device_t parent, device_t self, void *aux) 134 1.1.2.2 martin { 135 1.1.2.2 martin struct hwgpio_softc * const sc = device_private(self); 136 1.1.2.2 martin struct gpio_chipset_tag *gp = &sc->sc_gp; 137 1.1.2.2 martin struct gpiobus_attach_args gba = {}; 138 1.1.2.2 martin uint32_t in, out, dir; 139 1.1.2.2 martin u_int n; 140 1.1.2.2 martin 141 1.1.2.2 martin gp->gp_cookie = sc; 142 1.1.2.2 martin gp->gp_pin_read = hwgpio_pin_read; 143 1.1.2.2 martin gp->gp_pin_write = hwgpio_pin_write; 144 1.1.2.2 martin gp->gp_pin_ctl = hwgpio_pin_ctl; 145 1.1.2.2 martin 146 1.1.2.2 martin aprint_naive("\n"); 147 1.1.2.2 martin aprint_normal(": GPIO\n"); 148 1.1.2.2 martin 149 1.1.2.2 martin in = RD4(HW_GPIOB_IN); 150 1.1.2.2 martin out = RD4(HW_GPIOB_OUT); 151 1.1.2.2 martin dir = RD4(HW_GPIOB_DIR); 152 1.1.2.2 martin for (n = 0; n < __arraycount(hwgpio_pins); n++) { 153 1.1.2.2 martin const uint32_t mask = __BIT(hwgpio_pins[n].pin_num); 154 1.1.2.2 martin if (dir & mask) { 155 1.1.2.2 martin hwgpio_pins[n].pin_state = (out & mask) != 0; 156 1.1.2.2 martin } else { 157 1.1.2.2 martin hwgpio_pins[n].pin_state = (in & mask) != 0; 158 1.1.2.2 martin } 159 1.1.2.2 martin } 160 1.1.2.2 martin 161 1.1.2.2 martin gba.gba_gc = &sc->sc_gp; 162 1.1.2.2 martin gba.gba_pins = hwgpio_pins; 163 1.1.2.2 martin gba.gba_npins = __arraycount(hwgpio_pins); 164 1.1.2.2 martin config_found(self, &gba, NULL, CFARGS_NONE); 165 1.1.2.2 martin } 166 1.1.2.2 martin 167 1.1.2.2 martin CFATTACH_DECL_NEW(hwgpio, sizeof(struct hwgpio_softc), 168 1.1.2.2 martin hwgpio_match, hwgpio_attach, NULL, NULL); 169
Indexes created Tue Sep 30 20:09:53 GMT 2025