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freebsd-skq/sys/dev/acpi_support/acpi_fujitsu.c

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/*-
* 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("$FreeBSD$");
#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),
DEVMETHOD_END
};
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];
int rv;
rv = ACPI_ID_PROBE(device_get_parent(dev), dev, fujitsu_ids, &name);
if (acpi_disabled("fujitsu") || rv > 0 || device_get_unit(dev) > 1)
return (ENXIO);
sprintf(buffer, "Fujitsu Function Hotkeys %s", name);
device_set_desc_copy(dev, buffer);
return (rv);
}
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 | CTLFLAG_MPSAFE, 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 |
CTLFLAG_NEEDGIANT, 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);
}
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