netwalker_backlight.c revision 1.1.10.3
1 1.1.10.2 tls /* $NetBSD: netwalker_backlight.c,v 1.1.10.3 2017/12/03 11:36:06 jdolecek Exp $ */ 2 1.1.10.2 tls 3 1.1.10.2 tls /* 4 1.1.10.2 tls * Copyright (c) 2014 Genetec Corporation. All rights reserved. 5 1.1.10.2 tls * Written by Hashimoto Kenichi for Genetec Corporation. 6 1.1.10.2 tls * 7 1.1.10.2 tls * Redistribution and use in source and binary forms, with or without 8 1.1.10.2 tls * modification, are permitted provided that the following conditions 9 1.1.10.2 tls * are met: 10 1.1.10.2 tls * 1. Redistributions of source code must retain the above copyright 11 1.1.10.2 tls * notice, this list of conditions and the following disclaimer. 12 1.1.10.2 tls * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.10.2 tls * notice, this list of conditions and the following disclaimer in the 14 1.1.10.2 tls * documentation and/or other materials provided with the distribution. 15 1.1.10.2 tls * 16 1.1.10.2 tls * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 17 1.1.10.2 tls * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.1.10.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.1.10.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 20 1.1.10.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.1.10.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.1.10.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.1.10.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.1.10.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.1.10.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.1.10.2 tls * POSSIBILITY OF SUCH DAMAGE. 27 1.1.10.2 tls */ 28 1.1.10.2 tls 29 1.1.10.2 tls #include <sys/cdefs.h> 30 1.1.10.2 tls __KERNEL_RCSID(0, "$NetBSD: netwalker_backlight.c,v 1.1.10.3 2017/12/03 11:36:06 jdolecek Exp $"); 31 1.1.10.2 tls 32 1.1.10.2 tls #include <sys/param.h> 33 1.1.10.2 tls #include <sys/bus.h> 34 1.1.10.2 tls #include <sys/systm.h> 35 1.1.10.2 tls #include <sys/device.h> 36 1.1.10.2 tls #include <sys/pmf.h> 37 1.1.10.2 tls 38 1.1.10.2 tls #include <dev/wscons/wsconsio.h> 39 1.1.10.2 tls #include <dev/wscons/wsdisplayvar.h> 40 1.1.10.3 jdolecek #include <dev/wsfb/genfbvar.h> 41 1.1.10.2 tls 42 1.1.10.2 tls #include <dev/sysmon/sysmonvar.h> 43 1.1.10.2 tls #include <dev/sysmon/sysmon_taskq.h> 44 1.1.10.2 tls 45 1.1.10.2 tls #include <arm/imx/imx51reg.h> 46 1.1.10.2 tls #include <arm/imx/imx51var.h> 47 1.1.10.2 tls #include <arm/imx/imx51_ccmvar.h> 48 1.1.10.2 tls #include <arm/imx/imxpwmvar.h> 49 1.1.10.2 tls 50 1.1.10.2 tls #include <evbarm/netwalker/netwalker_backlightvar.h> 51 1.1.10.2 tls 52 1.1.10.3 jdolecek #define BRIGHTNESS_MAX 255 53 1.1.10.2 tls 54 1.1.10.2 tls struct netwalker_backlight_softc { 55 1.1.10.2 tls struct imxpwm_softc sc_imxpwm; 56 1.1.10.2 tls 57 1.1.10.2 tls int sc_brightness; 58 1.1.10.2 tls bool sc_islit; 59 1.1.10.2 tls }; 60 1.1.10.2 tls 61 1.1.10.2 tls static struct netwalker_backlight_softc *netwalker_backlight_sc; 62 1.1.10.2 tls 63 1.1.10.3 jdolecek static struct genfb_parameter_callback gpc_backlight; 64 1.1.10.3 jdolecek static struct genfb_parameter_callback gpc_brightness; 65 1.1.10.3 jdolecek 66 1.1.10.2 tls static int netwalker_backlight_match(device_t, cfdata_t, void *); 67 1.1.10.2 tls static void netwalker_backlight_attach(device_t, device_t, void *); 68 1.1.10.2 tls static int netwalker_backlight_detach(device_t, int); 69 1.1.10.2 tls 70 1.1.10.2 tls CFATTACH_DECL_NEW(netwalker_backlight, sizeof(struct netwalker_backlight_softc), 71 1.1.10.2 tls netwalker_backlight_match, netwalker_backlight_attach, netwalker_backlight_detach, NULL); 72 1.1.10.2 tls 73 1.1.10.2 tls static bool netwalker_backlight_resume(device_t, const pmf_qual_t *); 74 1.1.10.2 tls static bool netwalker_backlight_suspend(device_t, const pmf_qual_t *); 75 1.1.10.2 tls static void netwalker_backlight_on(device_t); 76 1.1.10.2 tls static void netwalker_backlight_off(device_t); 77 1.1.10.2 tls static void netwalker_brightness_up(device_t); 78 1.1.10.2 tls static void netwalker_brightness_down(device_t); 79 1.1.10.2 tls static void netwalker_set_brightness(struct netwalker_backlight_softc *, int); 80 1.1.10.2 tls 81 1.1.10.2 tls static int 82 1.1.10.2 tls netwalker_backlight_match(device_t parent, cfdata_t cf, void * aux) 83 1.1.10.2 tls { 84 1.1.10.2 tls return imxpwm_match(parent, cf, aux); 85 1.1.10.2 tls } 86 1.1.10.2 tls 87 1.1.10.2 tls static void 88 1.1.10.2 tls netwalker_backlight_attach(device_t parent, device_t self, void *aux) 89 1.1.10.2 tls { 90 1.1.10.2 tls struct netwalker_backlight_softc *sc = device_private(self); 91 1.1.10.2 tls struct imxpwm_softc *imxpwm = &sc->sc_imxpwm; 92 1.1.10.2 tls 93 1.1.10.2 tls imxpwm->sc_dev = self; 94 1.1.10.2 tls imxpwm->sc_hz = 1000; /* 1000 Hz */ 95 1.1.10.2 tls imxpwm->sc_handler = NULL; 96 1.1.10.2 tls imxpwm->sc_cookie = sc; 97 1.1.10.2 tls imxpwm_attach(imxpwm, aux); 98 1.1.10.2 tls 99 1.1.10.2 tls aprint_normal(": LCD BackLight Control\n"); 100 1.1.10.2 tls aprint_naive(": LCD BackLight Control\n"); 101 1.1.10.2 tls 102 1.1.10.2 tls netwalker_backlight_sc = sc; 103 1.1.10.2 tls 104 1.1.10.2 tls /* BackLight 100% On */ 105 1.1.10.2 tls sc->sc_brightness = BRIGHTNESS_MAX; 106 1.1.10.2 tls sc->sc_islit = true; 107 1.1.10.2 tls imxpwm_set_pwm(imxpwm, 1000); 108 1.1.10.2 tls 109 1.1.10.2 tls if (!pmf_device_register(self, netwalker_backlight_suspend, 110 1.1.10.2 tls netwalker_backlight_resume)) 111 1.1.10.2 tls aprint_error_dev(self, 112 1.1.10.2 tls "couldn't establish backlight handler\n"); 113 1.1.10.2 tls 114 1.1.10.2 tls if (!pmf_event_register(self, PMFE_DISPLAY_BRIGHTNESS_UP, 115 1.1.10.2 tls netwalker_brightness_up, true)) 116 1.1.10.2 tls aprint_error_dev(self, 117 1.1.10.2 tls "couldn't register BRIGHTNESS UP event handler\n"); 118 1.1.10.2 tls if (!pmf_event_register(self, PMFE_DISPLAY_BRIGHTNESS_DOWN, 119 1.1.10.2 tls netwalker_brightness_down, true)) 120 1.1.10.2 tls aprint_error_dev(self, 121 1.1.10.2 tls "couldn't register BRIGHTNESS DOWN event handler\n"); 122 1.1.10.2 tls if (!pmf_event_register(self, PMFE_DISPLAY_ON, 123 1.1.10.2 tls netwalker_backlight_on, true)) 124 1.1.10.2 tls aprint_error_dev(self, 125 1.1.10.2 tls "couldn't register DISPLAY ON event handler\n"); 126 1.1.10.2 tls if (!pmf_event_register(self, PMFE_DISPLAY_OFF, 127 1.1.10.2 tls netwalker_backlight_off, true)) 128 1.1.10.2 tls aprint_error_dev(self, 129 1.1.10.2 tls "couldn't register DISPLAY OFF event handler\n"); 130 1.1.10.2 tls if (!pmf_event_register(self, PMFE_CHASSIS_LID_OPEN, 131 1.1.10.2 tls netwalker_backlight_on, true)) 132 1.1.10.2 tls aprint_error_dev(self, 133 1.1.10.2 tls "couldn't register LID OPEN event handler\n"); 134 1.1.10.2 tls if (!pmf_event_register(self, PMFE_CHASSIS_LID_CLOSE, 135 1.1.10.2 tls netwalker_backlight_off, true)) 136 1.1.10.2 tls aprint_error_dev(self, 137 1.1.10.2 tls "couldn't register LID CLOSE event handler\n"); 138 1.1.10.2 tls } 139 1.1.10.2 tls 140 1.1.10.2 tls static int 141 1.1.10.2 tls netwalker_backlight_detach(device_t self, int flags) 142 1.1.10.2 tls { 143 1.1.10.2 tls struct netwalker_backlight_softc *sc = device_private(self); 144 1.1.10.2 tls struct imxpwm_softc *imxpwm = &sc->sc_imxpwm; 145 1.1.10.2 tls 146 1.1.10.2 tls imxpwm_set_pwm(imxpwm, 0); 147 1.1.10.2 tls pmf_device_deregister(self); 148 1.1.10.2 tls return 0; 149 1.1.10.2 tls } 150 1.1.10.2 tls 151 1.1.10.3 jdolecek static int 152 1.1.10.3 jdolecek netwalker_backlight_get_backlight(void *cookie, int *state) 153 1.1.10.3 jdolecek { 154 1.1.10.3 jdolecek struct netwalker_backlight_softc *sc = *(struct netwalker_backlight_softc **)cookie; 155 1.1.10.3 jdolecek *state = sc->sc_islit; 156 1.1.10.3 jdolecek return 0; 157 1.1.10.3 jdolecek } 158 1.1.10.3 jdolecek 159 1.1.10.3 jdolecek static int 160 1.1.10.3 jdolecek netwalker_backlight_set_backlight(void *cookie, int state) 161 1.1.10.3 jdolecek { 162 1.1.10.3 jdolecek struct netwalker_backlight_softc *sc = *(struct netwalker_backlight_softc **)cookie; 163 1.1.10.3 jdolecek 164 1.1.10.3 jdolecek KASSERT(state >= 0 && state <= 1); 165 1.1.10.3 jdolecek 166 1.1.10.3 jdolecek sc->sc_islit = state; 167 1.1.10.3 jdolecek netwalker_set_brightness(sc, sc->sc_brightness); 168 1.1.10.3 jdolecek 169 1.1.10.3 jdolecek return 0; 170 1.1.10.3 jdolecek } 171 1.1.10.3 jdolecek 172 1.1.10.3 jdolecek static int 173 1.1.10.3 jdolecek netwalker_backlight_get_brightness(void *cookie, int *level) 174 1.1.10.3 jdolecek { 175 1.1.10.3 jdolecek struct netwalker_backlight_softc *sc = *(struct netwalker_backlight_softc **)cookie; 176 1.1.10.3 jdolecek 177 1.1.10.3 jdolecek if (sc->sc_brightness < 0) 178 1.1.10.3 jdolecek return ENODEV; 179 1.1.10.3 jdolecek 180 1.1.10.3 jdolecek *level = sc->sc_brightness; 181 1.1.10.3 jdolecek return 0; 182 1.1.10.3 jdolecek } 183 1.1.10.3 jdolecek 184 1.1.10.3 jdolecek static int 185 1.1.10.3 jdolecek netwalker_backlight_set_brightness(void *cookie, int level) 186 1.1.10.3 jdolecek { 187 1.1.10.3 jdolecek struct netwalker_backlight_softc *sc = *(struct netwalker_backlight_softc **)cookie; 188 1.1.10.3 jdolecek 189 1.1.10.3 jdolecek KASSERT(level >= 0 && level <= 255); 190 1.1.10.3 jdolecek 191 1.1.10.3 jdolecek sc->sc_brightness = level; 192 1.1.10.3 jdolecek netwalker_set_brightness(sc, sc->sc_brightness); 193 1.1.10.3 jdolecek 194 1.1.10.3 jdolecek return 0; 195 1.1.10.3 jdolecek } 196 1.1.10.3 jdolecek 197 1.1.10.3 jdolecek static int 198 1.1.10.3 jdolecek netwalker_backlight_upd_brightness(void *cookie, int delta) 199 1.1.10.3 jdolecek { 200 1.1.10.3 jdolecek struct netwalker_backlight_softc *sc = *(struct netwalker_backlight_softc **)cookie; 201 1.1.10.3 jdolecek 202 1.1.10.3 jdolecek if (sc->sc_brightness < 0) 203 1.1.10.3 jdolecek return ENODEV; 204 1.1.10.3 jdolecek 205 1.1.10.3 jdolecek sc->sc_brightness += delta; 206 1.1.10.3 jdolecek if (sc->sc_brightness < 0) sc->sc_brightness = 0; 207 1.1.10.3 jdolecek if (sc->sc_brightness > 255) sc->sc_brightness = 255; 208 1.1.10.3 jdolecek netwalker_set_brightness(sc, sc->sc_brightness); 209 1.1.10.3 jdolecek 210 1.1.10.3 jdolecek return 0; 211 1.1.10.3 jdolecek } 212 1.1.10.3 jdolecek 213 1.1.10.3 jdolecek void 214 1.1.10.3 jdolecek netwalker_backlight_genfb_parameter_set(prop_dictionary_t dict) 215 1.1.10.3 jdolecek { 216 1.1.10.3 jdolecek gpc_backlight.gpc_cookie = (void *)&netwalker_backlight_sc; 217 1.1.10.3 jdolecek gpc_backlight.gpc_set_parameter = netwalker_backlight_set_backlight; 218 1.1.10.3 jdolecek gpc_backlight.gpc_get_parameter = netwalker_backlight_get_backlight; 219 1.1.10.3 jdolecek gpc_backlight.gpc_upd_parameter = NULL; 220 1.1.10.3 jdolecek prop_dictionary_set_uint64(dict, "backlight_callback", 221 1.1.10.3 jdolecek (uint64_t)(uintptr_t)&gpc_backlight); 222 1.1.10.3 jdolecek 223 1.1.10.3 jdolecek gpc_brightness.gpc_cookie = (void *)&netwalker_backlight_sc; 224 1.1.10.3 jdolecek gpc_brightness.gpc_set_parameter = netwalker_backlight_set_brightness; 225 1.1.10.3 jdolecek gpc_brightness.gpc_get_parameter = netwalker_backlight_get_brightness; 226 1.1.10.3 jdolecek gpc_brightness.gpc_upd_parameter = netwalker_backlight_upd_brightness; 227 1.1.10.3 jdolecek prop_dictionary_set_uint64(dict, "brightness_callback", 228 1.1.10.3 jdolecek (uint64_t)(uintptr_t)&gpc_brightness); 229 1.1.10.3 jdolecek } 230 1.1.10.3 jdolecek 231 1.1.10.2 tls /* 232 1.1.10.2 tls * Power management 233 1.1.10.2 tls */ 234 1.1.10.2 tls static bool 235 1.1.10.2 tls netwalker_backlight_suspend(device_t dv, const pmf_qual_t *qual) 236 1.1.10.2 tls { 237 1.1.10.2 tls netwalker_backlight_off(dv); 238 1.1.10.2 tls return true; 239 1.1.10.2 tls } 240 1.1.10.2 tls 241 1.1.10.2 tls static bool 242 1.1.10.2 tls netwalker_backlight_resume(device_t dv, const pmf_qual_t *qual) 243 1.1.10.2 tls { 244 1.1.10.2 tls netwalker_backlight_on(dv); 245 1.1.10.2 tls return true; 246 1.1.10.2 tls } 247 1.1.10.2 tls 248 1.1.10.2 tls static void 249 1.1.10.2 tls netwalker_backlight_on(device_t dv) 250 1.1.10.2 tls { 251 1.1.10.2 tls struct netwalker_backlight_softc *sc = device_private(dv); 252 1.1.10.2 tls sc->sc_islit = true; 253 1.1.10.2 tls netwalker_set_brightness(sc, sc->sc_brightness); 254 1.1.10.2 tls } 255 1.1.10.2 tls 256 1.1.10.2 tls static void 257 1.1.10.2 tls netwalker_backlight_off(device_t dv) 258 1.1.10.2 tls { 259 1.1.10.2 tls struct netwalker_backlight_softc *sc = device_private(dv); 260 1.1.10.2 tls sc->sc_islit = false; 261 1.1.10.2 tls netwalker_set_brightness(sc, sc->sc_brightness); 262 1.1.10.2 tls } 263 1.1.10.2 tls 264 1.1.10.2 tls static void 265 1.1.10.2 tls netwalker_brightness_up(device_t dv) 266 1.1.10.2 tls { 267 1.1.10.2 tls struct netwalker_backlight_softc *sc = device_private(dv); 268 1.1.10.2 tls netwalker_set_brightness(sc, sc->sc_brightness + 1); 269 1.1.10.2 tls } 270 1.1.10.2 tls 271 1.1.10.2 tls static void 272 1.1.10.2 tls netwalker_brightness_down(device_t dv) 273 1.1.10.2 tls { 274 1.1.10.2 tls struct netwalker_backlight_softc *sc = device_private(dv); 275 1.1.10.2 tls netwalker_set_brightness(sc, sc->sc_brightness - 1); 276 1.1.10.2 tls } 277 1.1.10.2 tls 278 1.1.10.2 tls static void 279 1.1.10.2 tls netwalker_set_brightness(struct netwalker_backlight_softc *sc, int newval) 280 1.1.10.2 tls { 281 1.1.10.2 tls struct imxpwm_softc *imxpwm = &sc->sc_imxpwm; 282 1.1.10.2 tls 283 1.1.10.2 tls if (newval < 0) 284 1.1.10.2 tls newval = 0; 285 1.1.10.2 tls else if (newval > BRIGHTNESS_MAX) 286 1.1.10.2 tls newval = BRIGHTNESS_MAX; 287 1.1.10.2 tls sc->sc_brightness = newval; 288 1.1.10.2 tls 289 1.1.10.2 tls if (sc->sc_islit) 290 1.1.10.2 tls imxpwm_set_pwm(imxpwm, 1000 * sc->sc_brightness / BRIGHTNESS_MAX); 291 1.1.10.2 tls else 292 1.1.10.2 tls imxpwm_set_pwm(imxpwm, 0); 293 1.1.10.2 tls } 294 1.1.10.2 tls 295 1.1.10.2 tls int 296 1.1.10.2 tls netwalker_lcd_param_ioctl(u_long cmd, struct wsdisplay_param *dp) 297 1.1.10.2 tls { 298 1.1.10.2 tls struct netwalker_backlight_softc *sc = netwalker_backlight_sc; 299 1.1.10.2 tls int rv = EINVAL; 300 1.1.10.2 tls 301 1.1.10.2 tls switch (dp->param) { 302 1.1.10.2 tls case WSDISPLAYIO_PARAM_BACKLIGHT: 303 1.1.10.2 tls if (cmd == WSDISPLAYIO_GETPARAM) { 304 1.1.10.2 tls dp->min = 0; 305 1.1.10.2 tls dp->max = 1; 306 1.1.10.2 tls dp->curval = sc->sc_islit ? 1 : 0; 307 1.1.10.2 tls rv = 0; 308 1.1.10.2 tls } else if (cmd == WSDISPLAYIO_SETPARAM) { 309 1.1.10.2 tls if (dp->curval != 0) 310 1.1.10.2 tls netwalker_backlight_on(sc->sc_imxpwm.sc_dev); 311 1.1.10.2 tls else 312 1.1.10.2 tls netwalker_backlight_off(sc->sc_imxpwm.sc_dev); 313 1.1.10.2 tls rv = 0; 314 1.1.10.2 tls } 315 1.1.10.2 tls break; 316 1.1.10.2 tls 317 1.1.10.2 tls case WSDISPLAYIO_PARAM_CONTRAST: 318 1.1.10.2 tls /* unsupported */ 319 1.1.10.2 tls rv = ENOTSUP; 320 1.1.10.2 tls break; 321 1.1.10.2 tls 322 1.1.10.2 tls case WSDISPLAYIO_PARAM_BRIGHTNESS: 323 1.1.10.2 tls if (cmd == WSDISPLAYIO_GETPARAM) { 324 1.1.10.2 tls dp->min = 0; 325 1.1.10.2 tls dp->max = BRIGHTNESS_MAX; 326 1.1.10.2 tls dp->curval = sc->sc_brightness; 327 1.1.10.2 tls rv = 0; 328 1.1.10.2 tls } else if (cmd == WSDISPLAYIO_SETPARAM) { 329 1.1.10.2 tls netwalker_set_brightness(sc, dp->curval); 330 1.1.10.2 tls rv = 0; 331 1.1.10.2 tls } 332 1.1.10.2 tls break; 333 1.1.10.2 tls } 334 1.1.10.2 tls 335 1.1.10.2 tls return rv; 336 1.1.10.2 tls } 337
Indexes created Thu Oct 02 07:10:07 GMT 2025