thinkpad_acpi.c revision 1.1
1 /* $NetBSD: thinkpad_acpi.c,v 1.1 2007/12/21 15:15:19 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Jared D. McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Jared D. McNeill. 18 * 4. Neither the name of The NetBSD Foundation nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: thinkpad_acpi.c,v 1.1 2007/12/21 15:15:19 jmcneill Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include <sys/malloc.h> 41 #include <sys/buf.h> 42 #include <sys/callout.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/pmf.h> 46 #include <sys/queue.h> 47 #include <sys/kmem.h> 48 49 #include <dev/acpi/acpivar.h> 50 51 #if defined(__i386__) || defined(__amd64__) 52 #include <machine/pio.h> 53 #endif 54 55 typedef struct thinkpad_softc { 56 device_t sc_dev; 57 struct acpi_devnode *sc_node; 58 ACPI_HANDLE sc_cmoshdl; 59 bool sc_cmoshdl_valid; 60 61 struct sysmon_pswitch sc_smpsw[2]; 62 #define TP_PSW_SLEEP 0 63 #define TP_PSW_HIBERNATE 1 64 bool sc_smpsw_valid; 65 } thinkpad_softc_t; 66 67 /* Hotkey events */ 68 #define THINKPAD_NOTIFY_FnF1 0x001 69 #define THINKPAD_NOTIFY_LockScreen 0x002 70 #define THINKPAD_NOTIFY_BatteryInfo 0x003 71 #define THINKPAD_NOTIFY_SleepButton 0x004 72 #define THINKPAD_NOTIFY_WirelessSwitch 0x005 73 #define THINKPAD_NOTIFY_FnF6 0x006 74 #define THINKPAD_NOTIFY_DisplayCycle 0x007 75 #define THINKPAD_NOTIFY_PointerSwitch 0x008 76 #define THINKPAD_NOTIFY_EjectButton 0x009 77 #define THINKPAD_NOTIFY_FnF10 0x00a 78 #define THINKPAD_NOTIFY_FnF11 0x00b 79 #define THINKPAD_NOTIFY_HibernateButton 0x00c 80 #define THINKPAD_NOTIFY_BrightnessUp 0x010 81 #define THINKPAD_NOTIFY_BrightnessDown 0x011 82 #define THINKPAD_NOTIFY_ThinkLight 0x012 83 #define THINKPAD_NOTIFY_Zoom 0x014 84 #define THINKPAD_NOTIFY_ThinkVantage 0x018 85 86 #define THINKPAD_CMOS_BRIGHTNESS_UP 0x04 87 #define THINKPAD_CMOS_BRIGHTNESS_DOWN 0x05 88 89 static int thinkpad_match(device_t, struct cfdata *, void *); 90 static void thinkpad_attach(device_t, device_t, void *); 91 92 static ACPI_STATUS thinkpad_mask_init(thinkpad_softc_t *, uint32_t); 93 static void thinkpad_notify_handler(ACPI_HANDLE, UINT32, void *); 94 95 static void thinkpad_brightness_up(device_t); 96 static void thinkpad_brightness_down(device_t); 97 static uint8_t thinkpad_brightness_read(thinkpad_softc_t *sc); 98 static void thinkpad_cmos(thinkpad_softc_t *, uint8_t); 99 100 CFATTACH_DECL_NEW(thinkpad, sizeof(thinkpad_softc_t), 101 thinkpad_match, thinkpad_attach, NULL, NULL); 102 103 static const char * const thinkpad_ids[] = { 104 "IBM0068", 105 NULL 106 }; 107 108 static int 109 thinkpad_match(device_t parent, struct cfdata *match, void *opaque) 110 { 111 struct acpi_attach_args *aa = (struct acpi_attach_args *)opaque; 112 ACPI_HANDLE hdl; 113 114 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 115 return 0; 116 117 if (!acpi_match_hid(aa->aa_node->ad_devinfo, thinkpad_ids)) 118 return 0; 119 120 /* No point in attaching if we can't find the CMOS method */ 121 if (ACPI_FAILURE(AcpiGetHandle(NULL, "\\UCMS", &hdl))) 122 return 0; 123 124 /* Cool, looks like we're good to go */ 125 return 1; 126 } 127 128 static void 129 thinkpad_attach(device_t parent, device_t self, void *opaque) 130 { 131 thinkpad_softc_t *sc = device_private(self); 132 struct acpi_attach_args *aa = (struct acpi_attach_args *)opaque; 133 ACPI_STATUS rv; 134 ACPI_INTEGER val; 135 136 sc->sc_node = aa->aa_node; 137 sc->sc_dev = self; 138 139 aprint_naive("\n"); 140 aprint_normal("\n"); 141 142 /* T61 uses \UCMS method for issuing CMOS commands */ 143 rv = AcpiGetHandle(NULL, "\\UCMS", &sc->sc_cmoshdl); 144 if (ACPI_FAILURE(rv)) 145 sc->sc_cmoshdl_valid = false; 146 else { 147 aprint_verbose_dev(self, "using CMOS at \\UCMS\n"); 148 sc->sc_cmoshdl_valid = true; 149 } 150 151 /* Get the supported event mask */ 152 rv = acpi_eval_integer(sc->sc_node->ad_handle, "MHKA", &val); 153 if (ACPI_FAILURE(rv)) { 154 aprint_error_dev(self, "couldn't evaluate MHKA: %s\n", 155 AcpiFormatException(rv)); 156 goto fail; 157 } 158 159 /* Enable all supported events */ 160 rv = thinkpad_mask_init(sc, val); 161 if (ACPI_FAILURE(rv)) { 162 aprint_error_dev(self, "couldn't set event mask: %s\n", 163 AcpiFormatException(rv)); 164 goto fail; 165 } 166 167 /* Install notify handler for events */ 168 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 169 ACPI_DEVICE_NOTIFY, thinkpad_notify_handler, sc); 170 if (ACPI_FAILURE(rv)) 171 aprint_error_dev(self, "couldn't install notify handler: %s\n", 172 AcpiFormatException(rv)); 173 174 /* Register with sysmon */ 175 sc->sc_smpsw_valid = true; 176 177 sc->sc_smpsw[TP_PSW_SLEEP].smpsw_name = device_xname(self); 178 sc->sc_smpsw[TP_PSW_SLEEP].smpsw_type = PSWITCH_TYPE_SLEEP; 179 #if notyet 180 sc->sc_smpsw[TP_PSW_HIBERNATE].smpsw_name = device_xname(self); 181 sc->sc_smpsw[TP_PSW_HIBERNATE].smpsw_type = PSWITCH_TYPE_HIBERNATE; 182 #endif 183 184 if (sysmon_pswitch_register(&sc->sc_smpsw[TP_PSW_SLEEP]) != 0) { 185 aprint_error_dev(self, "couldn't register with sysmon\n"); 186 sc->sc_smpsw_valid = false; 187 } 188 #if notyet 189 if (sysmon_pswitch_register(&sc->sc_smpsw[TP_PSW_HIBERNATE]) != 0) { 190 aprint_error_dev(self, "couldn't register with sysmon\n"); 191 sc->sc_smpsw_valid = false; 192 } 193 #endif 194 195 fail: 196 if (!pmf_device_register(self, NULL, NULL)) 197 aprint_error_dev(self, "couldn't establish power handler\n"); 198 if (!pmf_event_register(self, PMFE_DISPLAY_BRIGHTNESS_UP, 199 thinkpad_brightness_up, true)) 200 aprint_error_dev(self, "couldn't register event handler\n"); 201 if (!pmf_event_register(self, PMFE_DISPLAY_BRIGHTNESS_DOWN, 202 thinkpad_brightness_down, true)) 203 aprint_error_dev(self, "couldn't register event handler\n"); 204 205 return; 206 } 207 208 static void 209 thinkpad_notify_handler(ACPI_HANDLE hdl, UINT32 notify, void *opaque) 210 { 211 thinkpad_softc_t *sc = (thinkpad_softc_t *)opaque; 212 device_t self = sc->sc_dev; 213 ACPI_STATUS rv; 214 ACPI_INTEGER val; 215 int type, event; 216 217 if (notify != 0x80) { 218 aprint_debug_dev(self, "unknown notify 0x%02x\n", notify); 219 return; 220 } 221 222 rv = acpi_eval_integer(sc->sc_node->ad_handle, "MHKP", &val); 223 if (ACPI_FAILURE(rv)) { 224 aprint_error_dev(self, "couldn't evaluate MHKP: %s\n", 225 AcpiFormatException(rv)); 226 return; 227 } 228 229 type = (val & 0xf000) >> 12; 230 event = val & 0x0fff; 231 232 if (type != 1) 233 /* Only type 1 events are supported for now */ 234 return; 235 236 switch (event) { 237 case THINKPAD_NOTIFY_BrightnessUp: 238 thinkpad_brightness_up(self); 239 break; 240 case THINKPAD_NOTIFY_BrightnessDown: 241 thinkpad_brightness_down(self); 242 break; 243 case THINKPAD_NOTIFY_DisplayCycle: 244 #if notyet 245 pmf_event_inject(NULL, PMFE_DISPLAY_CYCLE); 246 #endif 247 break; 248 case THINKPAD_NOTIFY_SleepButton: 249 if (sc->sc_smpsw_valid == false) 250 break; 251 sysmon_pswitch_event(&sc->sc_smpsw[TP_PSW_SLEEP], 252 PSWITCH_EVENT_PRESSED); 253 break; 254 case THINKPAD_NOTIFY_HibernateButton: 255 #if notyet 256 if (sc->sc_smpsw_valid == false) 257 break; 258 sysmon_pswitch_event(&sc->sc_smpsw[TP_PSW_HIBERNATE], 259 PSWITCH_EVENT_PRESSED); 260 break; 261 #endif 262 case THINKPAD_NOTIFY_FnF1: 263 case THINKPAD_NOTIFY_LockScreen: 264 case THINKPAD_NOTIFY_BatteryInfo: 265 case THINKPAD_NOTIFY_WirelessSwitch: 266 case THINKPAD_NOTIFY_FnF6: 267 case THINKPAD_NOTIFY_PointerSwitch: 268 case THINKPAD_NOTIFY_EjectButton: 269 case THINKPAD_NOTIFY_FnF10: 270 case THINKPAD_NOTIFY_FnF11: 271 case THINKPAD_NOTIFY_ThinkLight: 272 case THINKPAD_NOTIFY_Zoom: 273 case THINKPAD_NOTIFY_ThinkVantage: 274 /* XXXJDM we should deliver unhandled hotkeys as keycodes */ 275 break; 276 default: 277 aprint_debug_dev(self, "notify event 0x%03x\n", event); 278 break; 279 } 280 281 return; 282 } 283 284 static ACPI_STATUS 285 thinkpad_mask_init(thinkpad_softc_t *sc, uint32_t mask) 286 { 287 ACPI_OBJECT param[2]; 288 ACPI_OBJECT_LIST params; 289 ACPI_STATUS rv; 290 int i; 291 292 /* Update hotkey mask */ 293 params.Count = 2; 294 params.Pointer = param; 295 param[0].Type = param[1].Type = ACPI_TYPE_INTEGER; 296 297 for (i = 0; i < 32; i++) { 298 param[0].Integer.Value = i + 1; 299 param[1].Integer.Value = (((1 << i) & mask) != 0); 300 301 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "MHKM", 302 ¶ms, NULL); 303 if (ACPI_FAILURE(rv)) 304 return rv; 305 } 306 307 /* Enable hotkey events */ 308 params.Count = 1; 309 param[0].Integer.Value = 1; 310 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "MHKC", ¶ms, NULL); 311 if (ACPI_FAILURE(rv)) { 312 aprint_error_dev(sc->sc_dev, "couldn't enable hotkeys: %s\n", 313 AcpiFormatException(rv)); 314 return rv; 315 } 316 317 return AE_OK; 318 } 319 320 static uint8_t 321 thinkpad_brightness_read(thinkpad_softc_t *sc) 322 { 323 #if defined(__i386__) || defined(__amd64__) 324 /* 325 * We have two ways to get the current brightness -- either via 326 * magic RTC registers, or using the EC. Since I don't dare mess 327 * with the EC, and Thinkpads are x86-only, this will have to do 328 * for now. 329 */ 330 outb(0x70, 0x6c); 331 return inb(0x71) & 7; 332 #else 333 return 0; 334 #endif 335 } 336 337 static void 338 thinkpad_brightness_up(device_t self) 339 { 340 thinkpad_softc_t *sc = device_private(self); 341 342 if (thinkpad_brightness_read(sc) == 7) 343 return; 344 thinkpad_cmos(sc, THINKPAD_CMOS_BRIGHTNESS_UP); 345 } 346 347 static void 348 thinkpad_brightness_down(device_t self) 349 { 350 thinkpad_softc_t *sc = device_private(self); 351 352 if (thinkpad_brightness_read(sc) == 0) 353 return; 354 thinkpad_cmos(sc, THINKPAD_CMOS_BRIGHTNESS_DOWN); 355 } 356 357 static void 358 thinkpad_cmos(thinkpad_softc_t *sc, uint8_t cmd) 359 { 360 ACPI_OBJECT param; 361 ACPI_OBJECT_LIST params; 362 ACPI_STATUS rv; 363 364 if (sc->sc_cmoshdl_valid == false) 365 return; 366 367 params.Count = 1; 368 params.Pointer = ¶m; 369 param.Type = ACPI_TYPE_INTEGER; 370 param.Integer.Value = cmd; 371 rv = AcpiEvaluateObject(sc->sc_cmoshdl, NULL, ¶ms, NULL); 372 if (ACPI_FAILURE(rv)) 373 aprint_error_dev(sc->sc_dev, "couldn't evalute CMOS: %s\n", 374 AcpiFormatException(rv)); 375 } 376
Indexes created Wed Oct 01 19:09:53 GMT 2025