1 /* $NetBSD: netwalker_btn.c,v 1.4 2021/08/07 16:18:50 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2014 Genetec Corporation. All rights reserved. 5 * Written by Hashimoto Kenichi for Genetec Corporation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: netwalker_btn.c,v 1.4 2021/08/07 16:18:50 thorpej Exp $"); 31 32 #include "opt_imxspi.h" 33 #include "opt_mousebtn.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 #include <sys/lock.h> 40 #include <sys/callout.h> 41 #include <sys/gpio.h> 42 #include <sys/bus.h> 43 #include <sys/mutex.h> 44 45 #include <dev/wscons/wsconsio.h> 46 #include <dev/wscons/wsmousevar.h> 47 48 #include <dev/gpio/gpiovar.h> 49 50 #define GPIO1_BASE 160 51 52 #define MOUSEBTN_PIN_LEFT 0 53 #define MOUSEBTN_PIN_RIGHT 1 54 #define MOUSEBTN_NPINS 2 55 56 #define POLLRATE (hz/10) 57 58 struct mousebtn_softc 59 { 60 device_t sc_dev; 61 void *sc_gpio; 62 void *sc_intr[MOUSEBTN_NPINS]; 63 64 struct gpio_pinmap sc_map; 65 int sc_map_pins[MOUSEBTN_NPINS]; 66 67 int sc_buttons; 68 69 struct callout sc_c; 70 kmutex_t sc_lock; 71 72 int sc_enabled; 73 struct device *sc_wsmousedev; 74 }; 75 76 static int mousebtn_match(device_t, cfdata_t, void *); 77 static void mousebtn_attach(device_t, device_t, void *); 78 static int mousebtn_detach(device_t, int); 79 80 CFATTACH_DECL_NEW(netwalker_btn, sizeof(struct mousebtn_softc), 81 mousebtn_match, mousebtn_attach, mousebtn_detach, NULL); 82 83 static void mousebtn_poll(void *); 84 static int mousebtn_intr(void *); 85 86 static int mousebtn_enable(void *v); 87 static void mousebtn_disable(void *v); 88 static int mousebtn_ioctl(void *, u_long, void *, int, struct lwp *); 89 90 static bool mousebtn_resume(device_t, const pmf_qual_t *); 91 static bool mousebtn_suspend(device_t, const pmf_qual_t *); 92 93 static const struct wsmouse_accessops mousebtn_accessops = { 94 .enable = mousebtn_enable, 95 .ioctl = mousebtn_ioctl, 96 .disable = mousebtn_disable 97 }; 98 99 static int 100 mousebtn_match(device_t parent, cfdata_t cf, void * aux) 101 { 102 struct gpio_attach_args *ga = aux; 103 104 if (strcmp(ga->ga_dvname, cf->cf_name)) 105 return 0; 106 if (ga->ga_offset == -1) 107 return 0; 108 109 /* check that we have enough pins */ 110 if (gpio_npins(ga->ga_mask) != MOUSEBTN_NPINS) { 111 aprint_debug("%s: invalid pin mask 0x%02x\n", cf->cf_name, 112 ga->ga_mask); 113 return 0; 114 } 115 116 return 1; 117 } 118 119 static void 120 mousebtn_attach(device_t parent, device_t self, void *aux) 121 { 122 struct mousebtn_softc *sc = device_private(self); 123 struct gpio_attach_args *ga = aux; 124 int caps; 125 struct wsmousedev_attach_args a; 126 127 sc->sc_dev = self; 128 sc->sc_gpio = ga->ga_gpio; 129 130 /* map pins */ 131 sc->sc_map.pm_map = sc->sc_map_pins; 132 if (gpio_pin_map(sc->sc_gpio, ga->ga_offset, ga->ga_mask, 133 &sc->sc_map)) { 134 aprint_error(": couldn't map the pins\n"); 135 return; 136 } 137 138 /* configure left pin */ 139 caps = gpio_pin_caps(sc->sc_gpio, &sc->sc_map, MOUSEBTN_PIN_LEFT); 140 if (!(caps & GPIO_PIN_INPUT)) { 141 aprint_error(": pin is unable to read input\n"); 142 gpio_pin_unmap(sc->sc_gpio, &sc->sc_map); 143 return; 144 } 145 gpio_pin_ctl(sc->sc_gpio, &sc->sc_map, MOUSEBTN_PIN_LEFT, 146 GPIO_PIN_INPUT); 147 148 /* configure right pin */ 149 caps = gpio_pin_caps(sc->sc_gpio, &sc->sc_map, MOUSEBTN_PIN_RIGHT); 150 if (!(caps & GPIO_PIN_INPUT)) { 151 aprint_error(": pin is unable to read input\n"); 152 gpio_pin_unmap(sc->sc_gpio, &sc->sc_map); 153 return; 154 } 155 gpio_pin_ctl(sc->sc_gpio, &sc->sc_map, MOUSEBTN_PIN_RIGHT, 156 GPIO_PIN_INPUT); 157 158 /* interrupt settings */ 159 sc->sc_intr[0] = intr_establish(GPIO1_BASE + ga->ga_offset, 160 IPL_VM, IST_EDGE_BOTH, mousebtn_intr, sc); 161 if (sc->sc_intr[0] == NULL) { 162 aprint_error(": couldn't establish interrupt\n"); 163 return; 164 } 165 sc->sc_intr[1] = intr_establish(GPIO1_BASE + ga->ga_offset + 1, 166 IPL_VM, IST_EDGE_BOTH, mousebtn_intr, sc); 167 if (sc->sc_intr[1] == NULL) { 168 aprint_error(": couldn't establish interrupt\n"); 169 intr_disestablish(sc->sc_intr[0]); 170 return; 171 } 172 173 aprint_normal(": NetWalker mouse button\n"); 174 aprint_naive(": NetWalker mouse button\n"); 175 176 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 177 callout_init(&sc->sc_c, 0); 178 179 a.accessops = &mousebtn_accessops; 180 a.accesscookie = sc; 181 182 sc->sc_buttons = 0; 183 sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint, CFARGS_NONE); 184 } 185 186 static int 187 mousebtn_detach(device_t self, int flags) 188 { 189 struct mousebtn_softc *sc = device_private(self); 190 191 if (sc->sc_intr[0] != NULL) 192 intr_disestablish(sc->sc_intr[0]); 193 if (sc->sc_intr[1] != NULL) 194 intr_disestablish(sc->sc_intr[1]); 195 196 gpio_pin_unmap(sc->sc_gpio, &sc->sc_map); 197 198 return 0; 199 } 200 201 static void 202 mousebtn_poll(void *arg) 203 { 204 struct mousebtn_softc *sc = (struct mousebtn_softc *)arg; 205 uint32_t buttons = 0; 206 int s; 207 int left; 208 int right; 209 210 mutex_enter(&sc->sc_lock); 211 212 left = !gpio_pin_read(sc->sc_gpio, &sc->sc_map, MOUSEBTN_PIN_LEFT); 213 right = !gpio_pin_read(sc->sc_gpio, &sc->sc_map, MOUSEBTN_PIN_RIGHT); 214 buttons = (right << 2) | left; 215 216 if (sc->sc_buttons != buttons) { 217 s = spltty(); 218 wsmouse_input(sc->sc_wsmousedev, buttons, 0, 0, 0, 0, 219 WSMOUSE_INPUT_DELTA); 220 sc->sc_buttons = buttons; 221 splx(s); 222 } 223 224 mutex_exit(&sc->sc_lock); 225 226 #if defined(MOUSEBTN_POLLING) 227 if (sc->sc_enabled) 228 callout_reset(&sc->sc_c, POLLRATE, mousebtn_poll, sc); 229 #endif 230 return; 231 } 232 233 static int 234 mousebtn_intr(void *v) 235 { 236 struct mousebtn_softc *sc = v; 237 238 if (sc->sc_enabled) 239 callout_reset(&sc->sc_c, POLLRATE, mousebtn_poll, sc); 240 241 return 1; 242 } 243 244 245 int 246 mousebtn_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l) 247 { 248 struct wsmouse_id *id; 249 250 switch (cmd) { 251 case WSMOUSEIO_GTYPE: 252 *(u_int *)data = WSMOUSE_TYPE_PS2; 253 return 0; 254 case WSMOUSEIO_GETID: 255 id = (struct wsmouse_id *)data; 256 if (id->type != WSMOUSE_ID_TYPE_UIDSTR) 257 return EINVAL; 258 strlcpy(id->data, "NetWalker Mouse Button", WSMOUSE_ID_MAXLEN); 259 id->length = strlen(id->data); 260 return 0; 261 } 262 263 return EPASSTHROUGH; 264 } 265 266 int 267 mousebtn_enable(void *v) 268 { 269 struct mousebtn_softc *sc = (struct mousebtn_softc *)v; 270 271 if (sc->sc_enabled) 272 return EBUSY; 273 274 if (!pmf_device_register(sc->sc_dev, mousebtn_suspend, mousebtn_resume)) 275 aprint_error_dev(sc->sc_dev, 276 "couldn't establish power handler\n"); 277 278 sc->sc_enabled = 1; 279 #if defined(MOUSEBTN_POLLING) 280 callout_reset(&sc->sc_c, POLLRATE, mousebtn_poll, sc); 281 #endif 282 283 return 0; 284 } 285 286 void 287 mousebtn_disable(void *v) 288 { 289 struct mousebtn_softc *sc = (struct mousebtn_softc *)v; 290 291 if (!sc->sc_enabled) 292 return; 293 294 pmf_device_deregister(sc->sc_dev); 295 296 sc->sc_enabled = 0; 297 298 return; 299 } 300 301 static bool 302 mousebtn_suspend(device_t dv, const pmf_qual_t *qual) 303 { 304 struct mousebtn_softc *sc = device_private(dv); 305 306 #if defined(MOUSEBTN_POLLING) 307 callout_stop(&sc->sc_c); 308 #endif 309 sc->sc_enabled = 0; 310 311 return true; 312 } 313 314 static bool 315 mousebtn_resume(device_t dv, const pmf_qual_t *qual) 316 { 317 struct mousebtn_softc *sc = device_private(dv); 318 319 sc->sc_enabled = 1; 320 #if defined(MOUSEBTN_POLLING) 321 callout_reset(&sc->sc_c, POLLRATE, mousebtn_poll, sc); 322 #endif 323 return true; 324 } 325 326
Indexes created Sat Sep 20 22:09:52 GMT 2025