Current Path : /sys/dev/acpi_support/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/acpi_support/acpi_fujitsu.c |
/*- * Copyright (c) 2002 Sean Bullington <seanATstalker.org> * 2003-2008 Anish Mistry <amistry@am-productions.biz> * 2004 Mark Santcroos <marks@ripe.net> * All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/dev/acpi_support/acpi_fujitsu.c 216376 2010-12-11 10:55:18Z avg $"); #include "opt_acpi.h" #include <sys/param.h> #include <sys/kernel.h> #include <sys/bus.h> #include <sys/module.h> #include <sys/sysctl.h> #include <contrib/dev/acpica/include/acpi.h> #include <contrib/dev/acpica/include/accommon.h> #include <dev/acpica/acpivar.h> /* Hooks for the ACPI CA debugging infrastructure */ #define _COMPONENT ACPI_OEM ACPI_MODULE_NAME("Fujitsu") /* Change and update bits for the hotkeys */ #define VOLUME_MUTE_BIT 0x40000000 /* Values of settings */ #define GENERAL_SETTING_BITS 0x0fffffff #define MOUSE_SETTING_BITS GENERAL_SETTING_BITS #define VOLUME_SETTING_BITS GENERAL_SETTING_BITS #define BRIGHTNESS_SETTING_BITS GENERAL_SETTING_BITS /* Possible state changes */ /* * These are NOT arbitrary values. They are the * GHKS return value from the device that says which * hotkey is active. They should match up with a bit * from the GSIF bitmask. */ #define BRIGHT_CHANGED 0x01 #define VOLUME_CHANGED 0x04 #define MOUSE_CHANGED 0x08 /* * It is unknown which hotkey this bit is supposed to indicate, but * according to values from GSIF this is a valid flag. */ #define UNKNOWN_CHANGED 0x10 /* sysctl values */ #define FN_MUTE 0 #define FN_POINTER_ENABLE 1 #define FN_LCD_BRIGHTNESS 2 #define FN_VOLUME 3 /* Methods */ #define METHOD_GBLL 1 #define METHOD_GMOU 2 #define METHOD_GVOL 3 #define METHOD_MUTE 4 #define METHOD_RBLL 5 #define METHOD_RVOL 6 #define METHOD_GSIF 7 #define METHOD_GHKS 8 #define METHOD_GBLS 9 /* Notify event */ #define ACPI_NOTIFY_STATUS_CHANGED 0x80 /* * Holds a control method name and its associated integer value. * Only used for no-argument control methods which return a value. */ struct int_nameval { char *name; int value; int exists; }; /* * Driver extension for the FUJITSU ACPI driver. */ struct acpi_fujitsu_softc { device_t dev; ACPI_HANDLE handle; /* Control methods */ struct int_nameval _sta, /* unused */ gbll, /* brightness */ gbls, /* get brightness state */ ghks, /* hotkey selector */ gbuf, /* unused (buffer?) */ gmou, /* mouse */ gsif, /* function key bitmask */ gvol, /* volume */ rbll, /* number of brightness levels (radix) */ rvol; /* number of volume levels (radix) */ /* State variables */ uint8_t bIsMuted; /* Is volume muted */ uint8_t bIntPtrEnabled; /* Is internal ptr enabled */ uint32_t lastValChanged; /* The last value updated */ /* sysctl tree */ struct sysctl_ctx_list sysctl_ctx; struct sysctl_oid *sysctl_tree; }; /* Driver entry point forward declarations. */ static int acpi_fujitsu_probe(device_t dev); static int acpi_fujitsu_attach(device_t dev); static int acpi_fujitsu_detach(device_t dev); static int acpi_fujitsu_suspend(device_t dev); static int acpi_fujitsu_resume(device_t dev); static void acpi_fujitsu_notify_status_changed(void *arg); static void acpi_fujitsu_notify_handler(ACPI_HANDLE h, uint32_t notify, void *context); static int acpi_fujitsu_sysctl(SYSCTL_HANDLER_ARGS); /* Utility function declarations */ static uint8_t acpi_fujitsu_update(struct acpi_fujitsu_softc *sc); static uint8_t acpi_fujitsu_init(struct acpi_fujitsu_softc *sc); static uint8_t acpi_fujitsu_check_hardware(struct acpi_fujitsu_softc *sc); /* Driver/Module specific structure definitions. */ static device_method_t acpi_fujitsu_methods[] = { /* Device interface */ DEVMETHOD(device_probe, acpi_fujitsu_probe), DEVMETHOD(device_attach, acpi_fujitsu_attach), DEVMETHOD(device_detach, acpi_fujitsu_detach), DEVMETHOD(device_suspend, acpi_fujitsu_suspend), DEVMETHOD(device_resume, acpi_fujitsu_resume), {0, 0} }; static driver_t acpi_fujitsu_driver = { "acpi_fujitsu", acpi_fujitsu_methods, sizeof(struct acpi_fujitsu_softc), }; /* Prototype for function hotkeys for getting/setting a value. */ static int acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method); static int acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value); static char *fujitsu_ids[] = { "FUJ02B1", NULL }; ACPI_SERIAL_DECL(fujitsu, "Fujitsu Function Hotkeys"); /* sysctl names and function calls */ static struct { char *name; int method; char *description; } sysctl_table[] = { { .name = "mute", .method = METHOD_MUTE, .description = "Speakers/headphones mute status" }, { .name = "pointer_enable", .method = METHOD_GMOU, .description = "Enable and disable the internal pointer" }, { .name = "lcd_brightness", .method = METHOD_GBLL, .description = "Brightness level of the LCD panel" }, { .name = "lcd_brightness", .method = METHOD_GBLS, .description = "Brightness level of the LCD panel" }, { .name = "volume", .method = METHOD_GVOL, .description = "Speakers/headphones volume level" }, { .name = "volume_radix", .method = METHOD_RVOL, .description = "Number of volume level steps" }, { .name = "lcd_brightness_radix", .method = METHOD_RBLL, .description = "Number of brightness level steps" }, { NULL, 0, NULL } }; static devclass_t acpi_fujitsu_devclass; DRIVER_MODULE(acpi_fujitsu, acpi, acpi_fujitsu_driver, acpi_fujitsu_devclass, 0, 0); MODULE_DEPEND(acpi_fujitsu, acpi, 1, 1, 1); MODULE_VERSION(acpi_fujitsu, 1); static int acpi_fujitsu_probe(device_t dev) { char *name; char buffer[64]; name = ACPI_ID_PROBE(device_get_parent(dev), dev, fujitsu_ids); if (acpi_disabled("fujitsu") || name == NULL || device_get_unit(dev) > 1) return (ENXIO); sprintf(buffer, "Fujitsu Function Hotkeys %s", name); device_set_desc_copy(dev, buffer); return (0); } static int acpi_fujitsu_attach(device_t dev) { struct acpi_fujitsu_softc *sc; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); sc = device_get_softc(dev); sc->dev = dev; sc->handle = acpi_get_handle(dev); /* Install notification handler */ AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, acpi_fujitsu_notify_handler, sc); /* Snag our default values for the hotkeys / hotkey states. */ ACPI_SERIAL_BEGIN(fujitsu); if (!acpi_fujitsu_init(sc)) device_printf(dev, "Couldn't initialize hotkey states!\n"); ACPI_SERIAL_END(fujitsu); return (0); } /* * Called when the system is being suspended, simply * set an event to be signalled when we wake up. */ static int acpi_fujitsu_suspend(device_t dev) { return (0); } static int acpi_fujitsu_resume(device_t dev) { struct acpi_fujitsu_softc *sc; ACPI_STATUS status; sc = device_get_softc(dev); /* * The pointer needs to be re-enabled for * some revisions of the P series (2120). */ ACPI_SERIAL_BEGIN(fujitsu); if(sc->gmou.exists) { status = acpi_SetInteger(sc->handle, "SMOU", 1); if (ACPI_FAILURE(status)) device_printf(sc->dev, "Couldn't enable pointer\n"); } ACPI_SERIAL_END(fujitsu); return (0); } static void acpi_fujitsu_notify_status_changed(void *arg) { struct acpi_fujitsu_softc *sc; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); sc = (struct acpi_fujitsu_softc *)arg; /* * Since our notify function is called, we know something has * happened. So the only reason for acpi_fujitsu_update to fail * is if we can't find what has changed or an error occurs. */ ACPI_SERIAL_BEGIN(fujitsu); acpi_fujitsu_update(sc); ACPI_SERIAL_END(fujitsu); } static void acpi_fujitsu_notify_handler(ACPI_HANDLE h, uint32_t notify, void *context) { struct acpi_fujitsu_softc *sc; ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); sc = (struct acpi_fujitsu_softc *)context; switch (notify) { case ACPI_NOTIFY_STATUS_CHANGED: AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_fujitsu_notify_status_changed, sc); break; default: /* unknown notification value */ break; } } static int acpi_fujitsu_detach(device_t dev) { struct acpi_fujitsu_softc *sc; sc = device_get_softc(dev); AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, acpi_fujitsu_notify_handler); sysctl_ctx_free(&sc->sysctl_ctx); return (0); } /* * Initializes the names of the ACPI control methods and grabs * the current state of all of the ACPI hotkeys into the softc. */ static uint8_t acpi_fujitsu_init(struct acpi_fujitsu_softc *sc) { struct acpi_softc *acpi_sc; int i, exists; ACPI_SERIAL_ASSERT(fujitsu); /* Setup all of the names for each control method */ sc->_sta.name = "_STA"; sc->gbll.name = "GBLL"; sc->gbls.name = "GBLS"; sc->ghks.name = "GHKS"; sc->gmou.name = "GMOU"; sc->gsif.name = "GSIF"; sc->gvol.name = "GVOL"; sc->ghks.name = "GHKS"; sc->gsif.name = "GSIF"; sc->rbll.name = "RBLL"; sc->rvol.name = "RVOL"; /* Determine what hardware functionality is available */ acpi_fujitsu_check_hardware(sc); /* Build the sysctl tree */ acpi_sc = acpi_device_get_parent_softc(sc->dev); sysctl_ctx_init(&sc->sysctl_ctx); sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO, "fujitsu", CTLFLAG_RD, 0, ""); for (i = 0; sysctl_table[i].name != NULL; i++) { switch(sysctl_table[i].method) { case METHOD_GMOU: exists = sc->gmou.exists; break; case METHOD_GBLL: exists = sc->gbll.exists; break; case METHOD_GBLS: exists = sc->gbls.exists; break; case METHOD_GVOL: case METHOD_MUTE: exists = sc->gvol.exists; break; case METHOD_RVOL: exists = sc->rvol.exists; break; case METHOD_RBLL: exists = sc->rbll.exists; break; default: /* Allow by default */ exists = 1; break; } if(!exists) continue; SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, sysctl_table[i].name, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY, sc, i, acpi_fujitsu_sysctl, "I", sysctl_table[i].description); } /* Set the hotkeys to their initial states */ if (!acpi_fujitsu_update(sc)) { device_printf(sc->dev, "Couldn't init hotkey states\n"); return (FALSE); } return (TRUE); } static int acpi_fujitsu_sysctl(SYSCTL_HANDLER_ARGS) { struct acpi_fujitsu_softc *sc; int method; int arg; int function_num, error = 0; sc = (struct acpi_fujitsu_softc *)oidp->oid_arg1; function_num = oidp->oid_arg2; method = sysctl_table[function_num].method; ACPI_SERIAL_BEGIN(fujitsu); /* Get the current value */ arg = acpi_fujitsu_method_get(sc, method); error = sysctl_handle_int(oidp, &arg, 0, req); if (error != 0 || req->newptr == NULL) goto out; /* Update the value */ error = acpi_fujitsu_method_set(sc, method, arg); out: ACPI_SERIAL_END(fujitsu); return (error); } static int acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method) { struct int_nameval nv; ACPI_STATUS status; ACPI_SERIAL_ASSERT(fujitsu); switch (method) { case METHOD_GBLL: nv = sc->gbll; break; case METHOD_GBLS: nv = sc->gbls; break; case METHOD_GMOU: nv = sc->gmou; break; case METHOD_GVOL: case METHOD_MUTE: nv = sc->gvol; break; case METHOD_GHKS: nv = sc->ghks; break; case METHOD_GSIF: nv = sc->gsif; break; case METHOD_RBLL: nv = sc->rbll; break; case METHOD_RVOL: nv = sc->rvol; break; default: return (FALSE); } if(!nv.exists) return (EINVAL); status = acpi_GetInteger(sc->handle, nv.name, &nv.value); if (ACPI_FAILURE(status)) { device_printf(sc->dev, "Couldn't query method (%s)\n", nv.name); return (FALSE); } if (method == METHOD_MUTE) { sc->bIsMuted = (uint8_t)((nv.value & VOLUME_MUTE_BIT) != 0); return (sc->bIsMuted); } nv.value &= GENERAL_SETTING_BITS; return (nv.value); } static int acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value) { struct int_nameval nv; ACPI_STATUS status; char *control; int changed; ACPI_SERIAL_ASSERT(fujitsu); switch (method) { case METHOD_GBLL: changed = BRIGHT_CHANGED; control = "SBLL"; nv = sc->gbll; break; case METHOD_GBLS: changed = BRIGHT_CHANGED; control = "SBL2"; nv = sc->gbls; break; case METHOD_GMOU: changed = MOUSE_CHANGED; control = "SMOU"; nv = sc->gmou; break; case METHOD_GVOL: case METHOD_MUTE: changed = VOLUME_CHANGED; control = "SVOL"; nv = sc->gvol; break; default: return (EINVAL); } if(!nv.exists) return (EINVAL); if (method == METHOD_MUTE) { if (value == 1) value = nv.value | VOLUME_MUTE_BIT; else if (value == 0) value = nv.value & ~VOLUME_MUTE_BIT; else return (EINVAL); } status = acpi_SetInteger(sc->handle, control, value); if (ACPI_FAILURE(status)) { device_printf(sc->dev, "Couldn't update %s\n", control); return (FALSE); } sc->lastValChanged = changed; return (0); } /* * Query the get methods to determine what functionality is available * from the hardware function hotkeys. */ static uint8_t acpi_fujitsu_check_hardware(struct acpi_fujitsu_softc *sc) { int val; ACPI_SERIAL_ASSERT(fujitsu); /* save the hotkey bitmask */ if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gsif.name, &(sc->gsif.value)))) { sc->gsif.exists = 0; device_printf(sc->dev, "Couldn't query bitmask value\n"); } else { sc->gsif.exists = 1; } /* System Volume Level */ if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gvol.name, &val))) { sc->gvol.exists = 0; } else { sc->gvol.exists = 1; } if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gbls.name, &val))) { sc->gbls.exists = 0; } else { sc->gbls.exists = 1; } // don't add if we can use the new method if (sc->gbls.exists || ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gbll.name, &val))) { sc->gbll.exists = 0; } else { sc->gbll.exists = 1; } if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->ghks.name, &val))) { sc->ghks.exists = 0; } else { sc->ghks.exists = 1; } if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gmou.name, &val))) { sc->gmou.exists = 0; } else { sc->gmou.exists = 1; } if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->rbll.name, &val))) { sc->rbll.exists = 0; } else { sc->rbll.exists = 1; } if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->rvol.name, &val))) { sc->rvol.exists = 0; } else { sc->rvol.exists = 1; } return (TRUE); } /* * Query each of the ACPI control methods that contain information we're * interested in. We check the return values from the control methods and * adjust any state variables if they should be adjusted. */ static uint8_t acpi_fujitsu_update(struct acpi_fujitsu_softc *sc) { int changed; struct acpi_softc *acpi_sc; acpi_sc = acpi_device_get_parent_softc(sc->dev); ACPI_SERIAL_ASSERT(fujitsu); if(sc->gsif.exists) changed = sc->gsif.value & acpi_fujitsu_method_get(sc,METHOD_GHKS); else changed = 0; /* System Volume Level */ if(sc->gvol.exists) { if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gvol.name, &(sc->gvol.value)))) { device_printf(sc->dev, "Couldn't query volume level\n"); return (FALSE); } if (changed & VOLUME_CHANGED) { sc->bIsMuted = (uint8_t)((sc->gvol.value & VOLUME_MUTE_BIT) != 0); /* Clear the modification bit */ sc->gvol.value &= VOLUME_SETTING_BITS; if (sc->bIsMuted) { acpi_UserNotify("FUJITSU", sc->handle, FN_MUTE); ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now mute\n"); } else ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now %d\n", sc->gvol.value); acpi_UserNotify("FUJITSU", sc->handle, FN_VOLUME); } } /* Internal mouse pointer (eraserhead) */ if(sc->gmou.exists) { if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gmou.name, &(sc->gmou.value)))) { device_printf(sc->dev, "Couldn't query pointer state\n"); return (FALSE); } if (changed & MOUSE_CHANGED) { sc->bIntPtrEnabled = (uint8_t)(sc->gmou.value & 0x1); /* Clear the modification bit */ sc->gmou.value &= MOUSE_SETTING_BITS; /* Set the value in case it is not hardware controlled */ acpi_fujitsu_method_set(sc, METHOD_GMOU, sc->gmou.value); acpi_UserNotify("FUJITSU", sc->handle, FN_POINTER_ENABLE); ACPI_VPRINT(sc->dev, acpi_sc, "Internal pointer is now %s\n", (sc->bIntPtrEnabled) ? "enabled" : "disabled"); } } /* Screen Brightness Level P8XXX */ if(sc->gbls.exists) { if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gbls.name, &(sc->gbls.value)))) { device_printf(sc->dev, "Couldn't query P8XXX brightness level\n"); return (FALSE); } if (changed & BRIGHT_CHANGED) { /* No state to record here. */ /* Clear the modification bit */ sc->gbls.value &= BRIGHTNESS_SETTING_BITS; /* Set the value in case it is not hardware controlled */ acpi_fujitsu_method_set(sc, METHOD_GBLS, sc->gbls.value); acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS); ACPI_VPRINT(sc->dev, acpi_sc, "P8XXX Brightness level is now %d\n", sc->gbls.value); } } /* Screen Brightness Level */ if(sc->gbll.exists) { if (ACPI_FAILURE(acpi_GetInteger(sc->handle, sc->gbll.name, &(sc->gbll.value)))) { device_printf(sc->dev, "Couldn't query brightness level\n"); return (FALSE); } if (changed & BRIGHT_CHANGED) { /* No state to record here. */ /* Clear the modification bit */ sc->gbll.value &= BRIGHTNESS_SETTING_BITS; acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS); ACPI_VPRINT(sc->dev, acpi_sc, "Brightness level is now %d\n", sc->gbll.value); } } sc->lastValChanged = changed; return (TRUE); }