augpio.c revision 1.2.2.3
1 1.2.2.3 yamt /* $NetBSD: augpio.c,v 1.2.2.3 2006/03/01 09:27:59 yamt Exp $ */ 2 1.2.2.2 yamt 3 1.2.2.2 yamt /*- 4 1.2.2.2 yamt * Copyright (c) 2006 Itronix Inc. 5 1.2.2.2 yamt * All rights reserved. 6 1.2.2.2 yamt * 7 1.2.2.2 yamt * Written by Garrett D'Amore for Itronix Inc. 8 1.2.2.2 yamt * 9 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 10 1.2.2.2 yamt * modification, are permitted provided that the following conditions 11 1.2.2.2 yamt * are met: 12 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 13 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 14 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 16 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 17 1.2.2.2 yamt * 3. The name of Itronix Inc. may not be used to endorse 18 1.2.2.2 yamt * or promote products derived from this software without specific 19 1.2.2.2 yamt * prior written permission. 20 1.2.2.2 yamt * 21 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 1.2.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 1.2.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 1.2.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 1.2.2.2 yamt * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 1.2.2.2 yamt * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 1.2.2.2 yamt * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 1.2.2.2 yamt * ON ANY THEORY OF LIABILITY, WHETHER IN 29 1.2.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 1.2.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 1.2.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 32 1.2.2.2 yamt */ 33 1.2.2.2 yamt 34 1.2.2.2 yamt #include <sys/cdefs.h> 35 1.2.2.3 yamt __KERNEL_RCSID(0, "$NetBSD: augpio.c,v 1.2.2.3 2006/03/01 09:27:59 yamt Exp $"); 36 1.2.2.2 yamt 37 1.2.2.2 yamt #include <sys/types.h> 38 1.2.2.2 yamt #include <sys/param.h> 39 1.2.2.2 yamt #include <sys/systm.h> 40 1.2.2.2 yamt #include <sys/errno.h> 41 1.2.2.2 yamt #include <sys/device.h> 42 1.2.2.2 yamt #include <sys/gpio.h> 43 1.2.2.2 yamt #include <sys/kernel.h> 44 1.2.2.2 yamt 45 1.2.2.2 yamt #include <dev/gpio/gpiovar.h> 46 1.2.2.2 yamt 47 1.2.2.2 yamt #include <machine/bus.h> 48 1.2.2.2 yamt #include <machine/cpu.h> 49 1.2.2.2 yamt 50 1.2.2.2 yamt #include <mips/alchemy/include/aubusvar.h> 51 1.2.2.2 yamt #include <mips/alchemy/include/aureg.h> 52 1.2.2.2 yamt #include <mips/alchemy/dev/augpioreg.h> 53 1.2.2.2 yamt 54 1.2.2.2 yamt struct augpio_softc { 55 1.2.2.2 yamt struct device sc_dev; 56 1.2.2.2 yamt struct gpio_chipset_tag sc_gc; 57 1.2.2.2 yamt gpio_pin_t sc_pins[AUGPIO_NPINS]; 58 1.2.2.2 yamt int sc_npins; 59 1.2.2.3 yamt bus_space_tag_t sc_bst; 60 1.2.2.3 yamt bus_space_handle_t sc_bsh; 61 1.2.2.3 yamt int sc_caps; 62 1.2.2.3 yamt const char *sc_name; 63 1.2.2.3 yamt int (*sc_getctl)(void *, int); 64 1.2.2.2 yamt }; 65 1.2.2.2 yamt 66 1.2.2.3 yamt static int augpio_read(void *, int); 67 1.2.2.3 yamt static void augpio_write(void *, int, int); 68 1.2.2.3 yamt static void augpio_ctl(void *, int, int); 69 1.2.2.3 yamt static int augpio_getctl(void *, int); 70 1.2.2.3 yamt 71 1.2.2.3 yamt static int augpio2_read(void *, int); 72 1.2.2.3 yamt static void augpio2_write(void *, int, int); 73 1.2.2.3 yamt static void augpio2_ctl(void *, int, int); 74 1.2.2.3 yamt static int augpio2_getctl(void *, int); 75 1.2.2.3 yamt 76 1.2.2.2 yamt static int augpio_match(struct device *, struct cfdata *, void *); 77 1.2.2.2 yamt static void augpio_attach(struct device *, struct device *, void *); 78 1.2.2.2 yamt 79 1.2.2.2 yamt CFATTACH_DECL(augpio, sizeof(struct augpio_softc), 80 1.2.2.2 yamt augpio_match, augpio_attach, NULL, NULL); 81 1.2.2.2 yamt 82 1.2.2.2 yamt #define GETREG(x) \ 83 1.2.2.2 yamt (*(volatile uint32_t *)MIPS_PHYS_TO_KSEG1(x)) 84 1.2.2.2 yamt #define PUTREG(x, v) \ 85 1.2.2.2 yamt ((*(volatile uint32_t *)MIPS_PHYS_TO_KSEG1(x)) = (v)) 86 1.2.2.2 yamt 87 1.2.2.2 yamt static int augpio_found = 0; 88 1.2.2.2 yamt 89 1.2.2.2 yamt int 90 1.2.2.2 yamt augpio_match(struct device *parent, struct cfdata *match, void *aux) 91 1.2.2.2 yamt { 92 1.2.2.2 yamt struct aubus_attach_args *aa = (struct aubus_attach_args *)aux; 93 1.2.2.2 yamt 94 1.2.2.2 yamt if (strcmp(aa->aa_name, "augpio") != 0) 95 1.2.2.2 yamt return 0; 96 1.2.2.2 yamt 97 1.2.2.2 yamt if (augpio_found) 98 1.2.2.2 yamt return 0; 99 1.2.2.2 yamt 100 1.2.2.2 yamt return 1; 101 1.2.2.2 yamt } 102 1.2.2.2 yamt 103 1.2.2.2 yamt void 104 1.2.2.2 yamt augpio_attach(struct device *parent, struct device *self, void *aux) 105 1.2.2.2 yamt { 106 1.2.2.2 yamt int pin; 107 1.2.2.2 yamt 108 1.2.2.2 yamt struct augpio_softc *sc = (struct augpio_softc *)self; 109 1.2.2.2 yamt struct aubus_attach_args *aa = aux; 110 1.2.2.2 yamt struct gpiobus_attach_args gba; 111 1.2.2.2 yamt 112 1.2.2.3 yamt sc->sc_bst = aa->aa_st; 113 1.2.2.3 yamt sc->sc_npins = aa->aa_addrs[1]; 114 1.2.2.3 yamt sc->sc_gc.gp_cookie = sc; 115 1.2.2.2 yamt 116 1.2.2.3 yamt if (aa->aa_addrs[0] == GPIO_BASE) { 117 1.2.2.2 yamt 118 1.2.2.3 yamt if (bus_space_map(sc->sc_bst, aa->aa_addrs[0], 119 1.2.2.3 yamt AUGPIO_SIZE, 0, &sc->sc_bsh) != 0) { 120 1.2.2.3 yamt printf(": cannot map registers!\n"); 121 1.2.2.3 yamt return; 122 1.2.2.2 yamt } 123 1.2.2.3 yamt sc->sc_caps = GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | 124 1.2.2.3 yamt GPIO_PIN_TRISTATE; 125 1.2.2.3 yamt sc->sc_gc.gp_pin_read = augpio_read; 126 1.2.2.3 yamt sc->sc_gc.gp_pin_write = augpio_write; 127 1.2.2.3 yamt sc->sc_gc.gp_pin_ctl = augpio_ctl; 128 1.2.2.3 yamt sc->sc_getctl = augpio_getctl; 129 1.2.2.3 yamt sc->sc_name = "primary block"; 130 1.2.2.2 yamt 131 1.2.2.2 yamt } else if (aa->aa_addrs[0] == GPIO2_BASE) { 132 1.2.2.2 yamt /* 133 1.2.2.2 yamt * We rely on firmware (or platform init code) to initialize 134 1.2.2.2 yamt * the GPIO2 block. We can't do it ourselves, because 135 1.2.2.2 yamt * resetting the GPIO2 block can have nasty effects (e.g. 136 1.2.2.2 yamt * reset PCI bus...) 137 1.2.2.2 yamt */ 138 1.2.2.3 yamt if (bus_space_map(sc->sc_bst, aa->aa_addrs[0], 139 1.2.2.3 yamt AUGPIO2_SIZE, 0, &sc->sc_bsh) != 0) { 140 1.2.2.3 yamt printf(": cannot map registers!\n"); 141 1.2.2.3 yamt return; 142 1.2.2.2 yamt } 143 1.2.2.3 yamt sc->sc_caps = GPIO_PIN_INPUT | GPIO_PIN_OUTPUT; 144 1.2.2.3 yamt sc->sc_gc.gp_pin_read = augpio2_read; 145 1.2.2.3 yamt sc->sc_gc.gp_pin_write = augpio2_write; 146 1.2.2.3 yamt sc->sc_gc.gp_pin_ctl = augpio2_ctl; 147 1.2.2.3 yamt sc->sc_getctl = augpio2_getctl; 148 1.2.2.3 yamt sc->sc_name = "secondary block"; 149 1.2.2.2 yamt 150 1.2.2.2 yamt } else { 151 1.2.2.3 yamt printf(": unidentified block\n"); 152 1.2.2.3 yamt return; 153 1.2.2.2 yamt } 154 1.2.2.2 yamt 155 1.2.2.3 yamt for (pin = 0; pin < sc->sc_npins; pin++) { 156 1.2.2.3 yamt gpio_pin_t *pp = &sc->sc_pins[pin]; 157 1.2.2.3 yamt 158 1.2.2.3 yamt pp->pin_num = pin; 159 1.2.2.3 yamt pp->pin_caps = sc->sc_caps; 160 1.2.2.3 yamt pp->pin_flags = sc->sc_getctl(sc, pin); 161 1.2.2.3 yamt pp->pin_state = sc->sc_gc.gp_pin_read(sc, pin); 162 1.2.2.3 yamt } 163 1.2.2.2 yamt 164 1.2.2.2 yamt gba.gba_gc = &sc->sc_gc; 165 1.2.2.2 yamt gba.gba_pins = sc->sc_pins; 166 1.2.2.2 yamt gba.gba_npins = sc->sc_npins; 167 1.2.2.2 yamt 168 1.2.2.3 yamt printf(": Alchemy GPIO, %s\n", sc->sc_name); 169 1.2.2.2 yamt config_found_ia(&sc->sc_dev, "gpiobus", &gba, gpiobus_print); 170 1.2.2.2 yamt } 171 1.2.2.2 yamt 172 1.2.2.2 yamt int 173 1.2.2.3 yamt augpio_read(void *arg, int pin) 174 1.2.2.2 yamt { 175 1.2.2.3 yamt struct augpio_softc *sc = arg; 176 1.2.2.2 yamt 177 1.2.2.3 yamt pin = 1 << pin; 178 1.2.2.2 yamt 179 1.2.2.3 yamt if (bus_space_read_4(sc->sc_bst, sc->sc_bsh, AUGPIO_PINSTATERD) & pin) 180 1.2.2.3 yamt return GPIO_PIN_HIGH; 181 1.2.2.2 yamt else 182 1.2.2.3 yamt return GPIO_PIN_LOW; 183 1.2.2.2 yamt } 184 1.2.2.2 yamt 185 1.2.2.2 yamt void 186 1.2.2.3 yamt augpio_write(void *arg, int pin, int value) 187 1.2.2.2 yamt { 188 1.2.2.3 yamt struct augpio_softc *sc = arg; 189 1.2.2.2 yamt 190 1.2.2.2 yamt pin = 1 << pin; 191 1.2.2.3 yamt bus_space_write_4(sc->sc_bst, sc->sc_bsh, 192 1.2.2.3 yamt value ? AUGPIO_OUTPUTSET : AUGPIO_OUTPUTCLR, pin); 193 1.2.2.2 yamt } 194 1.2.2.2 yamt 195 1.2.2.2 yamt void 196 1.2.2.3 yamt augpio_ctl(void *arg, int pin, int flags) 197 1.2.2.2 yamt { 198 1.2.2.3 yamt struct augpio_softc *sc = arg; 199 1.2.2.3 yamt bus_addr_t reg; 200 1.2.2.2 yamt 201 1.2.2.2 yamt pin = 1 << pin; 202 1.2.2.3 yamt 203 1.2.2.3 yamt if (flags & (GPIO_PIN_TRISTATE|GPIO_PIN_INPUT)) { 204 1.2.2.3 yamt reg = AUGPIO_TRIOUTCLR; 205 1.2.2.3 yamt } else if (flags & GPIO_PIN_OUTPUT) { 206 1.2.2.3 yamt uint32_t out; 207 1.2.2.3 yamt out = bus_space_read_4(sc->sc_bst, sc->sc_bsh, AUGPIO_OUTPUTRD); 208 1.2.2.3 yamt reg = pin & out ? AUGPIO_OUTPUTSET : AUGPIO_OUTPUTCLR; 209 1.2.2.2 yamt } else { 210 1.2.2.3 yamt return; 211 1.2.2.2 yamt } 212 1.2.2.3 yamt 213 1.2.2.3 yamt bus_space_write_4(sc->sc_bst, sc->sc_bsh, reg, pin); 214 1.2.2.2 yamt } 215 1.2.2.2 yamt 216 1.2.2.2 yamt int 217 1.2.2.3 yamt augpio_getctl(void *arg, int pin) 218 1.2.2.2 yamt { 219 1.2.2.3 yamt struct augpio_softc *sc = arg; 220 1.2.2.2 yamt 221 1.2.2.3 yamt if (bus_space_read_4(sc->sc_bst, sc->sc_bsh, AUGPIO_TRIOUTRD) & pin) 222 1.2.2.3 yamt return GPIO_PIN_OUTPUT; 223 1.2.2.3 yamt else 224 1.2.2.3 yamt return GPIO_PIN_INPUT; 225 1.2.2.2 yamt } 226 1.2.2.2 yamt 227 1.2.2.2 yamt int 228 1.2.2.3 yamt augpio2_read(void *arg, int pin) 229 1.2.2.2 yamt { 230 1.2.2.3 yamt struct augpio_softc *sc = arg; 231 1.2.2.2 yamt 232 1.2.2.2 yamt pin = 1 << pin; 233 1.2.2.3 yamt 234 1.2.2.3 yamt if (bus_space_read_4(sc->sc_bst, sc->sc_bsh, AUGPIO2_PINSTATE) & pin) 235 1.2.2.3 yamt return GPIO_PIN_HIGH; 236 1.2.2.3 yamt else 237 1.2.2.3 yamt return GPIO_PIN_LOW; 238 1.2.2.2 yamt } 239 1.2.2.2 yamt 240 1.2.2.2 yamt void 241 1.2.2.3 yamt augpio2_write(void *arg, int pin, int value) 242 1.2.2.2 yamt { 243 1.2.2.3 yamt struct augpio_softc *sc = arg; 244 1.2.2.2 yamt 245 1.2.2.2 yamt pin = 1 << pin; 246 1.2.2.2 yamt 247 1.2.2.2 yamt if (value) { 248 1.2.2.3 yamt pin = pin | (pin << 16); 249 1.2.2.2 yamt } else { 250 1.2.2.3 yamt pin = (pin << 16); 251 1.2.2.2 yamt } 252 1.2.2.3 yamt 253 1.2.2.3 yamt bus_space_write_4(sc->sc_bst, sc->sc_bsh, AUGPIO2_OUTPUT, pin); 254 1.2.2.2 yamt } 255 1.2.2.2 yamt 256 1.2.2.3 yamt void 257 1.2.2.3 yamt augpio2_ctl(void *arg, int pin, int flags) 258 1.2.2.2 yamt { 259 1.2.2.3 yamt struct augpio_softc *sc = arg; 260 1.2.2.2 yamt uint32_t dir; 261 1.2.2.2 yamt 262 1.2.2.2 yamt pin = 1 << pin; 263 1.2.2.2 yamt 264 1.2.2.3 yamt dir = bus_space_read_4(sc->sc_bst, sc->sc_bsh, AUGPIO2_DIR); 265 1.2.2.2 yamt 266 1.2.2.2 yamt if (flags & GPIO_PIN_INPUT) { 267 1.2.2.2 yamt dir |= pin; 268 1.2.2.2 yamt } else if (flags & GPIO_PIN_OUTPUT) { 269 1.2.2.2 yamt dir &= ~pin; 270 1.2.2.2 yamt } 271 1.2.2.3 yamt bus_space_write_4(sc->sc_bst, sc->sc_bsh, AUGPIO2_DIR, dir); 272 1.2.2.3 yamt } 273 1.2.2.2 yamt 274 1.2.2.3 yamt int 275 1.2.2.3 yamt augpio2_getctl(void *arg, int pin) 276 1.2.2.3 yamt { 277 1.2.2.3 yamt struct augpio_softc *sc = arg; 278 1.2.2.3 yamt uint32_t dir; 279 1.2.2.3 yamt 280 1.2.2.3 yamt pin = 1 << pin; 281 1.2.2.3 yamt 282 1.2.2.3 yamt dir = bus_space_read_4(sc->sc_bst, sc->sc_bsh, AUGPIO2_DIR); 283 1.2.2.3 yamt if (dir & (uint32_t)pin) { 284 1.2.2.3 yamt return GPIO_PIN_OUTPUT; 285 1.2.2.3 yamt } else { 286 1.2.2.3 yamt return GPIO_PIN_INPUT; 287 1.2.2.3 yamt } 288 1.2.2.2 yamt } 289 1.2.2.3 yamt 290
Indexes created Fri Oct 03 02:09:57 GMT 2025