freebsd-src/sys/dev/acpi_support/acpi_asus.c
Philip Paeps 647e5349ec Enable the led-toggling magic. Compiling files which are in the kernel into
modules is a very nice way to produce hard-to-find panics.  Who would look for
a bug in a Makefile anyway?

Has anyone seen the pointy hat? :-o

Approved by:	njl (mentor)
2004-04-23 17:41:05 +00:00

618 lines
14 KiB
C

/*-
* Copyright (c) 2004 Philip Paeps <philip@FreeBSD.org>
* 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("$FreeBSD$");
/*
* Driver for extra ACPI-controlled gadgets (hotkeys, leds, etc) found on
* recent Asus (and Medion) laptops. Inspired by the Acpi4Asus project which
* implements these features in the Linux kernel.
*
* <http://sourceforge.net/projects/acpi4asus/>
*
* Currently should support most features, but could use some more testing.
* Particularly the display-switching stuff is a bit hairy. If you have an
* Asus laptop which doesn't appear to be supported, or strange things happen
* when using this driver, please report to <acpi@FreeBSD.org>.
*
*/
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/sbuf.h>
#include "acpi.h"
#include <dev/acpica/acpivar.h>
#include <dev/led/led.h>
#define _COMPONENT ACPI_ASUS
ACPI_MODULE_NAME("ASUS")
struct acpi_asus_model {
char *name;
char *mled_set;
char *tled_set;
char *wled_set;
char *brn_get;
char *brn_set;
char *brn_up;
char *brn_dn;
char *lcd_get;
char *lcd_set;
char *disp_get;
char *disp_set;
};
struct acpi_asus_softc {
device_t dev;
ACPI_HANDLE handle;
struct acpi_asus_model *model;
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
dev_t s_mled;
dev_t s_tled;
dev_t s_wled;
int s_brn;
int s_disp;
int s_lcd;
};
/* Models we know about */
static struct acpi_asus_model acpi_asus_models[] = {
{
.name = "L2D",
.mled_set = "MLED",
.wled_set = "WLED",
.brn_up = "\\Q0E",
.brn_dn = "\\Q0F",
.lcd_get = "\\SGP0",
.lcd_set = "\\Q10"
},
{
.name = "L3C",
.mled_set = "MLED",
.wled_set = "WLED",
.brn_get = "GPLV",
.brn_set = "SPLV",
.lcd_get = "\\GL32",
.lcd_set = "\\_SB.PCI0.PX40.ECD0._Q10"
},
{
.name = "L3D",
.mled_set = "MLED",
.wled_set = "WLED",
.brn_get = "GPLV",
.brn_set = "SPLV",
.lcd_get = "\\BKLG",
.lcd_set = "\\Q10"
},
{
.name = "L3H",
.mled_set = "MLED",
.wled_set = "WLED",
.brn_get = "GPLV",
.brn_set = "SPLV",
.lcd_get = "\\_SB.PCI0.PM.PBC",
.lcd_set = "EHK",
.disp_get = "\\_SB.INFB",
.disp_set = "SDSP"
},
{
.name = "L8L"
/* Only has hotkeys, apparantly */
},
{
.name = "M1A",
.mled_set = "MLED",
.brn_up = "\\_SB.PCI0.PX40.EC0.Q0E",
.brn_dn = "\\_SB.PCI0.PX40.EC0.Q0F",
.lcd_get = "\\PNOF",
.lcd_set = "\\_SB.PCI0.PX40.EC0.Q10"
},
{
.name = "M2E",
.mled_set = "MLED",
.wled_set = "WLED",
.brn_get = "GPLV",
.brn_set = "SPLV",
.lcd_get = "\\GP06",
.lcd_set = "\\Q10"
},
{
.name = "P30",
.wled_set = "WLED",
.brn_up = "\\_SB.PCI0.LPCB.EC0._Q68",
.brn_dn = "\\_SB.PCI0.LPCB.EC0._Q69",
.lcd_get = "\\BKLT",
.lcd_set = "\\_SB.PCI0.LPCB.EC0._Q0E"
},
{ .name = NULL }
};
/* Function prototypes */
static int acpi_asus_probe(device_t dev);
static int acpi_asus_attach(device_t dev);
static int acpi_asus_detach(device_t dev);
static void acpi_asus_mled(device_t dev, int state);
static void acpi_asus_tled(device_t dev, int state);
static void acpi_asus_wled(device_t dev, int state);
static int acpi_asus_sysctl_brn(SYSCTL_HANDLER_ARGS);
static int acpi_asus_sysctl_lcd(SYSCTL_HANDLER_ARGS);
static int acpi_asus_sysctl_disp(SYSCTL_HANDLER_ARGS);
static void acpi_asus_notify(ACPI_HANDLE h, UINT32 notify, void *context);
static device_method_t acpi_asus_methods[] = {
DEVMETHOD(device_probe, acpi_asus_probe),
DEVMETHOD(device_attach, acpi_asus_attach),
DEVMETHOD(device_detach, acpi_asus_detach),
{ 0, 0 }
};
static driver_t acpi_asus_driver = {
"acpi_asus",
acpi_asus_methods,
sizeof(struct acpi_asus_softc)
};
static devclass_t acpi_asus_devclass;
DRIVER_MODULE(acpi_asus, acpi, acpi_asus_driver, acpi_asus_devclass, 0, 0);
MODULE_DEPEND(acpi_asus, acpi, 1, 1, 1);
static int
acpi_asus_probe(device_t dev)
{
struct acpi_asus_model *model;
struct acpi_asus_softc *sc;
struct sbuf *sb;
ACPI_BUFFER Buf;
ACPI_OBJECT Arg, *Obj;
ACPI_OBJECT_LIST Args;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
if (!acpi_disabled("asus") &&
acpi_get_type(dev) == ACPI_TYPE_DEVICE &&
acpi_MatchHid(dev, "ATK0100")) {
sc = device_get_softc(dev);
sc->dev = dev;
sc->handle = acpi_get_handle(dev);
sb = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND);
if (sb == NULL)
return (ENOMEM);
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = 0;
Args.Count = 1;
Args.Pointer = &Arg;
Buf.Pointer = NULL;
Buf.Length = ACPI_ALLOCATE_BUFFER;
AcpiEvaluateObject(sc->handle, "INIT", &Args, &Buf);
Obj = Buf.Pointer;
for (model = acpi_asus_models; model->name != NULL; model++)
if (strcmp(Obj->String.Pointer, model->name) == 0) {
sbuf_printf(sb, "Asus %s Laptop Extras",
Obj->String.Pointer);
sbuf_finish(sb);
sc->model = model;
device_set_desc(dev, sbuf_data(sb));
sbuf_delete(sb);
AcpiOsFree(Buf.Pointer);
return (0);
}
sbuf_printf(sb, "Unsupported Asus laptop detected: %s\n",
Obj->String.Pointer);
sbuf_finish(sb);
device_printf(dev, sbuf_data(sb));
sbuf_delete(sb);
AcpiOsFree(Buf.Pointer);
}
return (ENXIO);
}
static int
acpi_asus_attach(device_t dev)
{
struct acpi_asus_softc *sc;
struct acpi_softc *acpi_sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
acpi_sc = acpi_device_get_parent_softc(dev);
/* Build sysctl tree */
sysctl_ctx_init(&sc->sysctl_ctx);
sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
OID_AUTO, "asus", CTLFLAG_RD, 0, "");
/* Attach leds */
if (sc->model->mled_set)
sc->s_mled = led_create((led_t *)acpi_asus_mled, dev, "mled");
if (sc->model->tled_set)
sc->s_tled = led_create((led_t *)acpi_asus_tled, dev, "tled");
if (sc->model->wled_set)
sc->s_wled = led_create((led_t *)acpi_asus_wled, dev, "wled");
/* Attach brightness for GPLV/SPLV models */
if (sc->model->brn_get &&
ACPI_SUCCESS(acpi_GetInteger(sc->handle,
sc->model->brn_get, &sc->s_brn)))
SYSCTL_ADD_PROC(&sc->sysctl_ctx,
SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
"lcd_brightness", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
acpi_asus_sysctl_brn, "I", "brightness of the lcd panel");
/* Attach brightness for other models */
if (sc->model->brn_up &&
ACPI_SUCCESS(AcpiEvaluateObject(sc->handle,
sc->model->brn_up, NULL, NULL)) &&
ACPI_SUCCESS(AcpiEvaluateObject(sc->handle,
sc->model->brn_dn, NULL, NULL)))
SYSCTL_ADD_PROC(&sc->sysctl_ctx,
SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
"lcd_brightness", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
acpi_asus_sysctl_brn, "I", "brightness of the lcd panel");
/* Attach display switching */
if (sc->model->disp_get &&
ACPI_SUCCESS(acpi_GetInteger(sc->handle,
sc->model->disp_get, &sc->s_disp)))
SYSCTL_ADD_PROC(&sc->sysctl_ctx,
SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
"video_output", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
acpi_asus_sysctl_disp, "I", "display output state");
/* Attach LCD state, easy for most models... */
if (sc->model->lcd_get &&
strncmp(sc->model->name, "L3H", 3) != 0 &&
ACPI_SUCCESS(acpi_GetInteger(sc->handle,
sc->model->lcd_get, &sc->s_lcd)))
SYSCTL_ADD_PROC(&sc->sysctl_ctx,
SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
"lcd_backlight", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
acpi_asus_sysctl_lcd, "I", "state of the lcd backlight");
/* ...a nightmare for the L3H */
else if (sc->model->lcd_get) {
ACPI_BUFFER Buf;
ACPI_OBJECT Arg[2], Obj;
ACPI_OBJECT_LIST Args;
Arg[0].Type = ACPI_TYPE_INTEGER;
Arg[0].Integer.Value = 0x02;
Arg[1].Type = ACPI_TYPE_INTEGER;
Arg[1].Integer.Value = 0x03;
Args.Count = 2;
Args.Pointer = Arg;
Buf.Length = sizeof(Obj);
Buf.Pointer = &Obj;
if (ACPI_SUCCESS(AcpiEvaluateObject(sc->handle,
sc->model->lcd_get, &Args, &Buf)) &&
Obj.Type == ACPI_TYPE_INTEGER) {
sc->s_lcd = Obj.Integer.Value >> 8;
SYSCTL_ADD_PROC(&sc->sysctl_ctx,
SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
"lcd_backlight", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
acpi_asus_sysctl_lcd, "I",
"state of the lcd backlight");
}
}
/* Activate hotkeys */
AcpiEvaluateObject(sc->handle, "BSTS", NULL, NULL);
/* Handle notifies */
AcpiInstallNotifyHandler(sc->handle,
ACPI_SYSTEM_NOTIFY, acpi_asus_notify, dev);
return (0);
}
static int
acpi_asus_detach(device_t dev)
{
struct acpi_asus_softc *sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
/* Turn the lights off */
if (sc->model->mled_set)
led_destroy(sc->s_mled);
if (sc->model->tled_set)
led_destroy(sc->s_tled);
if (sc->model->wled_set)
led_destroy(sc->s_wled);
/* Remove notify handler */
AcpiRemoveNotifyHandler(sc->handle,
ACPI_SYSTEM_NOTIFY, acpi_asus_notify);
/* Free sysctl tree */
sysctl_ctx_free(&sc->sysctl_ctx);
return (0);
}
static void
acpi_asus_mled(device_t dev, int state)
{
struct acpi_asus_softc *sc;
ACPI_OBJECT Arg;
ACPI_OBJECT_LIST Args;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = !state; /* Inverted, yes! */
Args.Count = 1;
Args.Pointer = &Arg;
AcpiEvaluateObject(sc->handle, sc->model->mled_set, &Args, NULL);
}
static void
acpi_asus_tled(device_t dev, int state)
{
struct acpi_asus_softc *sc;
ACPI_OBJECT Arg;
ACPI_OBJECT_LIST Args;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = state;
Args.Count = 1;
Args.Pointer = &Arg;
AcpiEvaluateObject(sc->handle, sc->model->tled_set, &Args, NULL);
}
static void
acpi_asus_wled(device_t dev, int state)
{
struct acpi_asus_softc *sc;
ACPI_OBJECT Arg;
ACPI_OBJECT_LIST Args;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = state;
Args.Count = 1;
Args.Pointer = &Arg;
AcpiEvaluateObject(sc->handle, sc->model->wled_set, &Args, NULL);
}
static int
acpi_asus_sysctl_brn(SYSCTL_HANDLER_ARGS)
{
struct acpi_asus_softc *sc;
ACPI_OBJECT Arg;
ACPI_OBJECT_LIST Args;
int brn, err;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = (struct acpi_asus_softc *)oidp->oid_arg1;
/* Sanity check */
brn = sc->s_brn;
err = sysctl_handle_int(oidp, &brn, 0, req);
if ((err != 0) || (req->newptr == NULL))
return (err);
if ((brn < 0) || (brn > 15))
return (EINVAL);
/* Keep track and update */
sc->s_brn = brn;
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = brn;
Args.Count = 1;
Args.Pointer = &Arg;
if (sc->model->brn_set)
AcpiEvaluateObject(sc->handle,
sc->model->brn_set, &Args, NULL);
else {
brn -= sc->s_brn;
while (brn != 0) {
AcpiEvaluateObject(sc->handle,(brn > 0) ?
sc->model->brn_up : sc->model->brn_dn,
NULL, NULL);
(brn > 0) ? brn-- : brn++;
}
}
return (0);
}
static int
acpi_asus_sysctl_lcd(SYSCTL_HANDLER_ARGS)
{
struct acpi_asus_softc *sc;
int lcd, err;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = (struct acpi_asus_softc *)oidp->oid_arg1;
/* Sanity check */
lcd = sc->s_lcd;
err = sysctl_handle_int(oidp, &lcd, 0, req);
if ((err != 0) || (req->newptr == NULL))
return (err);
if ((lcd < 0) || (lcd > 1))
return (EINVAL);
/* Keep track and update */
sc->s_lcd = lcd;
/* Most models just need a lcd_set evaluated, the L3H is trickier */
if (strncmp(sc->model->name, "L3H", 3) != 0)
AcpiEvaluateObject(sc->handle,
sc->model->lcd_set, NULL, NULL);
else {
ACPI_OBJECT Arg;
ACPI_OBJECT_LIST Args;
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = 0x07;
Args.Count = 1;
Args.Pointer = &Arg;
AcpiEvaluateObject(sc->handle,
sc->model->lcd_set, &Args, NULL);
}
return (0);
}
static int
acpi_asus_sysctl_disp(SYSCTL_HANDLER_ARGS)
{
struct acpi_asus_softc *sc;
ACPI_OBJECT Arg;
ACPI_OBJECT_LIST Args;
int disp, err;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = (struct acpi_asus_softc *)oidp->oid_arg1;
/* Sanity check */
disp = sc->s_disp;
err = sysctl_handle_int(oidp, &disp, 0, req);
if ((err != 0) || (req->newptr == NULL))
return (err);
if ((disp < 0) || (disp > 7))
return (EINVAL);
/* Keep track and update */
sc->s_disp = disp;
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = disp;
Args.Count = 1;
Args.Pointer = &Arg;
AcpiEvaluateObject(sc->handle,
sc->model->disp_set, &Args, NULL);
return (0);
}
static void
acpi_asus_notify(ACPI_HANDLE h, UINT32 notify, void *context)
{
struct acpi_asus_softc *sc;
struct acpi_softc *acpi_sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc((device_t)context);
acpi_sc = acpi_device_get_parent_softc(sc->dev);
if ((notify & ~0x10) <= 15) {
sc->s_brn = (notify & ~0x10);
ACPI_VPRINT(sc->dev, acpi_sc, "Brightness increased\n");
} else if ((notify & ~0x20) <= 15) {
sc->s_brn = (notify & ~0x20);
ACPI_VPRINT(sc->dev, acpi_sc, "Brightness decreased\n");
} else if (notify == 0x33) {
sc->s_lcd = 1;
ACPI_VPRINT(sc->dev, acpi_sc, "LCD turned on\n");
} else if (notify == 0x34) {
sc->s_lcd = 0;
ACPI_VPRINT(sc->dev, acpi_sc, "LCD turned off\n");
} else {
/* Notify devd(8) */
acpi_UserNotify("ASUS", h, notify);
}
}