| Current Path : /usr/src/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 : //usr/src/sys/dev/acpi_support/acpi_panasonic.c |
/*-
* Copyright (c) 2003 OGAWA Takaya <t-ogawa@triaez.kaisei.org>
* Copyright (c) 2004 TAKAHASHI Yoshihiro <nyan@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: release/9.1.0/sys/dev/acpi_support/acpi_panasonic.c 202771 2010-01-21 21:14:28Z jkim $");
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/power.h>
#include <contrib/dev/acpica/include/acpi.h>
#include <dev/acpica/acpivar.h>
#define _COMPONENT ACPI_OEM
ACPI_MODULE_NAME("Panasonic")
/* Debug */
#undef ACPI_PANASONIC_DEBUG
/* Operations */
#define HKEY_SET 0
#define HKEY_GET 1
/* Functions */
#define HKEY_REG_LCD_BRIGHTNESS_MAX_AC 0x02
#define HKEY_REG_LCD_BRIGHTNESS_MIN_AC 0x03
#define HKEY_REG_LCD_BRIGHTNESS_AC 0x04
#define HKEY_REG_LCD_BRIGHTNESS_MAX_DC 0x05
#define HKEY_REG_LCD_BRIGHTNESS_MIN_DC 0x06
#define HKEY_REG_LCD_BRIGHTNESS_DC 0x07
#define HKEY_REG_SOUND_MUTE 0x08
/* Field definitions */
#define HKEY_LCD_BRIGHTNESS_BITS 4
#define HKEY_LCD_BRIGHTNESS_DIV ((1 << HKEY_LCD_BRIGHTNESS_BITS) - 1)
struct acpi_panasonic_softc {
device_t dev;
ACPI_HANDLE handle;
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
eventhandler_tag power_evh;
};
/* Prototype for HKEY functions for getting/setting a value. */
typedef int hkey_fn_t(ACPI_HANDLE, int, UINT32 *);
static int acpi_panasonic_probe(device_t dev);
static int acpi_panasonic_attach(device_t dev);
static int acpi_panasonic_detach(device_t dev);
static int acpi_panasonic_shutdown(device_t dev);
static int acpi_panasonic_sysctl(SYSCTL_HANDLER_ARGS);
static UINT64 acpi_panasonic_sinf(ACPI_HANDLE h, UINT64 index);
static void acpi_panasonic_sset(ACPI_HANDLE h, UINT64 index,
UINT64 val);
static int acpi_panasonic_hkey_event(struct acpi_panasonic_softc *sc,
ACPI_HANDLE h, UINT32 *arg);
static void acpi_panasonic_hkey_action(struct acpi_panasonic_softc *sc,
ACPI_HANDLE h, UINT32 key);
static void acpi_panasonic_notify(ACPI_HANDLE h, UINT32 notify,
void *context);
static void acpi_panasonic_power_profile(void *arg);
static hkey_fn_t hkey_lcd_brightness_max;
static hkey_fn_t hkey_lcd_brightness_min;
static hkey_fn_t hkey_lcd_brightness;
static hkey_fn_t hkey_sound_mute;
ACPI_SERIAL_DECL(panasonic, "ACPI Panasonic extras");
/* Table of sysctl names and HKEY functions to call. */
static struct {
char *name;
hkey_fn_t *handler;
} sysctl_table[] = {
/* name, handler */
{"lcd_brightness_max", hkey_lcd_brightness_max},
{"lcd_brightness_min", hkey_lcd_brightness_min},
{"lcd_brightness", hkey_lcd_brightness},
{"sound_mute", hkey_sound_mute},
{NULL, NULL}
};
static device_method_t acpi_panasonic_methods[] = {
DEVMETHOD(device_probe, acpi_panasonic_probe),
DEVMETHOD(device_attach, acpi_panasonic_attach),
DEVMETHOD(device_detach, acpi_panasonic_detach),
DEVMETHOD(device_shutdown, acpi_panasonic_shutdown),
{0, 0}
};
static driver_t acpi_panasonic_driver = {
"acpi_panasonic",
acpi_panasonic_methods,
sizeof(struct acpi_panasonic_softc),
};
static devclass_t acpi_panasonic_devclass;
DRIVER_MODULE(acpi_panasonic, acpi, acpi_panasonic_driver,
acpi_panasonic_devclass, 0, 0);
MODULE_DEPEND(acpi_panasonic, acpi, 1, 1, 1);
static int
acpi_panasonic_probe(device_t dev)
{
static char *mat_ids[] = { "MAT0019", NULL };
if (acpi_disabled("panasonic") ||
ACPI_ID_PROBE(device_get_parent(dev), dev, mat_ids) == NULL ||
device_get_unit(dev) != 0)
return (ENXIO);
device_set_desc(dev, "Panasonic Notebook Hotkeys");
return (0);
}
static int
acpi_panasonic_attach(device_t dev)
{
struct acpi_panasonic_softc *sc;
struct acpi_softc *acpi_sc;
ACPI_STATUS status;
int i;
sc = device_get_softc(dev);
sc->dev = dev;
sc->handle = acpi_get_handle(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,
"panasonic", CTLFLAG_RD, 0, "");
for (i = 0; sysctl_table[i].name != NULL; i++) {
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_panasonic_sysctl, "I", "");
}
#if 0
/* Activate hotkeys */
status = AcpiEvaluateObject(sc->handle, "", NULL, NULL);
if (ACPI_FAILURE(status)) {
device_printf(dev, "enable FN keys failed\n");
sysctl_ctx_free(&sc->sysctl_ctx);
return (ENXIO);
}
#endif
/* Handle notifies */
status = AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
acpi_panasonic_notify, sc);
if (ACPI_FAILURE(status)) {
device_printf(dev, "couldn't install notify handler - %s\n",
AcpiFormatException(status));
sysctl_ctx_free(&sc->sysctl_ctx);
return (ENXIO);
}
/* Install power profile event handler */
sc->power_evh = EVENTHANDLER_REGISTER(power_profile_change,
acpi_panasonic_power_profile, sc->handle, 0);
return (0);
}
static int
acpi_panasonic_detach(device_t dev)
{
struct acpi_panasonic_softc *sc;
sc = device_get_softc(dev);
/* Remove power profile event handler */
EVENTHANDLER_DEREGISTER(power_profile_change, sc->power_evh);
/* Remove notify handler */
AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
acpi_panasonic_notify);
/* Free sysctl tree */
sysctl_ctx_free(&sc->sysctl_ctx);
return (0);
}
static int
acpi_panasonic_shutdown(device_t dev)
{
struct acpi_panasonic_softc *sc;
int mute;
/* Mute the main audio during reboot to prevent static burst to speaker. */
sc = device_get_softc(dev);
mute = 1;
hkey_sound_mute(sc->handle, HKEY_SET, &mute);
return (0);
}
static int
acpi_panasonic_sysctl(SYSCTL_HANDLER_ARGS)
{
struct acpi_panasonic_softc *sc;
UINT32 arg;
int function, error;
hkey_fn_t *handler;
sc = (struct acpi_panasonic_softc *)oidp->oid_arg1;
function = oidp->oid_arg2;
handler = sysctl_table[function].handler;
/* Get the current value from the appropriate function. */
ACPI_SERIAL_BEGIN(panasonic);
error = handler(sc->handle, HKEY_GET, &arg);
if (error != 0)
goto out;
/* Send the current value to the user and return if no new value. */
error = sysctl_handle_int(oidp, &arg, 0, req);
if (error != 0 || req->newptr == NULL)
goto out;
/* Set the new value via the appropriate function. */
error = handler(sc->handle, HKEY_SET, &arg);
out:
ACPI_SERIAL_END(panasonic);
return (error);
}
static UINT64
acpi_panasonic_sinf(ACPI_HANDLE h, UINT64 index)
{
ACPI_BUFFER buf;
ACPI_OBJECT *res;
UINT64 ret;
ACPI_SERIAL_ASSERT(panasonic);
ret = -1;
buf.Length = ACPI_ALLOCATE_BUFFER;
buf.Pointer = NULL;
AcpiEvaluateObject(h, "SINF", NULL, &buf);
res = (ACPI_OBJECT *)buf.Pointer;
if (res->Type == ACPI_TYPE_PACKAGE)
ret = res->Package.Elements[index].Integer.Value;
AcpiOsFree(buf.Pointer);
return (ret);
}
static void
acpi_panasonic_sset(ACPI_HANDLE h, UINT64 index, UINT64 val)
{
ACPI_OBJECT_LIST args;
ACPI_OBJECT obj[2];
ACPI_SERIAL_ASSERT(panasonic);
obj[0].Type = ACPI_TYPE_INTEGER;
obj[0].Integer.Value = index;
obj[1].Type = ACPI_TYPE_INTEGER;
obj[1].Integer.Value = val;
args.Count = 2;
args.Pointer = obj;
AcpiEvaluateObject(h, "SSET", &args, NULL);
}
static int
hkey_lcd_brightness_max(ACPI_HANDLE h, int op, UINT32 *val)
{
int reg;
ACPI_SERIAL_ASSERT(panasonic);
reg = (power_profile_get_state() == POWER_PROFILE_PERFORMANCE) ?
HKEY_REG_LCD_BRIGHTNESS_MAX_AC : HKEY_REG_LCD_BRIGHTNESS_MAX_DC;
switch (op) {
case HKEY_SET:
return (EPERM);
break;
case HKEY_GET:
*val = acpi_panasonic_sinf(h, reg);
break;
}
return (0);
}
static int
hkey_lcd_brightness_min(ACPI_HANDLE h, int op, UINT32 *val)
{
int reg;
ACPI_SERIAL_ASSERT(panasonic);
reg = (power_profile_get_state() == POWER_PROFILE_PERFORMANCE) ?
HKEY_REG_LCD_BRIGHTNESS_MIN_AC : HKEY_REG_LCD_BRIGHTNESS_MIN_DC;
switch (op) {
case HKEY_SET:
return (EPERM);
break;
case HKEY_GET:
*val = acpi_panasonic_sinf(h, reg);
break;
}
return (0);
}
static int
hkey_lcd_brightness(ACPI_HANDLE h, int op, UINT32 *val)
{
int reg;
UINT32 max, min;
reg = (power_profile_get_state() == POWER_PROFILE_PERFORMANCE) ?
HKEY_REG_LCD_BRIGHTNESS_AC : HKEY_REG_LCD_BRIGHTNESS_DC;
ACPI_SERIAL_ASSERT(panasonic);
switch (op) {
case HKEY_SET:
hkey_lcd_brightness_max(h, HKEY_GET, &max);
hkey_lcd_brightness_min(h, HKEY_GET, &min);
if (*val < min || *val > max)
return (EINVAL);
acpi_panasonic_sset(h, reg, *val);
break;
case HKEY_GET:
*val = acpi_panasonic_sinf(h, reg);
break;
}
return (0);
}
static int
hkey_sound_mute(ACPI_HANDLE h, int op, UINT32 *val)
{
ACPI_SERIAL_ASSERT(panasonic);
switch (op) {
case HKEY_SET:
if (*val != 0 && *val != 1)
return (EINVAL);
acpi_panasonic_sset(h, HKEY_REG_SOUND_MUTE, *val);
break;
case HKEY_GET:
*val = acpi_panasonic_sinf(h, HKEY_REG_SOUND_MUTE);
break;
}
return (0);
}
static int
acpi_panasonic_hkey_event(struct acpi_panasonic_softc *sc, ACPI_HANDLE h,
UINT32 *arg)
{
ACPI_BUFFER buf;
ACPI_OBJECT *res;
UINT64 val;
int status;
ACPI_SERIAL_ASSERT(panasonic);
status = ENXIO;
buf.Length = ACPI_ALLOCATE_BUFFER;
buf.Pointer = NULL;
AcpiEvaluateObject(h, "HINF", NULL, &buf);
res = (ACPI_OBJECT *)buf.Pointer;
if (res->Type != ACPI_TYPE_INTEGER) {
device_printf(sc->dev, "HINF returned non-integer\n");
goto end;
}
val = res->Integer.Value;
#ifdef ACPI_PANASONIC_DEBUG
device_printf(sc->dev, "%s button Fn+F%d\n",
(val & 0x80) ? "Pressed" : "Released",
(int)(val & 0x7f));
#endif
if ((val & 0x7f) > 0 && (val & 0x7f) < 11) {
*arg = val;
status = 0;
}
end:
if (buf.Pointer)
AcpiOsFree(buf.Pointer);
return (status);
}
static void
acpi_panasonic_hkey_action(struct acpi_panasonic_softc *sc, ACPI_HANDLE h,
UINT32 key)
{
struct acpi_softc *acpi_sc;
int arg, max, min;
acpi_sc = acpi_device_get_parent_softc(sc->dev);
ACPI_SERIAL_ASSERT(panasonic);
switch (key) {
case 1:
/* Decrease LCD brightness. */
hkey_lcd_brightness_max(h, HKEY_GET, &max);
hkey_lcd_brightness_min(h, HKEY_GET, &min);
hkey_lcd_brightness(h, HKEY_GET, &arg);
arg -= max / HKEY_LCD_BRIGHTNESS_DIV;
if (arg < min)
arg = min;
else if (arg > max)
arg = max;
hkey_lcd_brightness(h, HKEY_SET, &arg);
break;
case 2:
/* Increase LCD brightness. */
hkey_lcd_brightness_max(h, HKEY_GET, &max);
hkey_lcd_brightness_min(h, HKEY_GET, &min);
hkey_lcd_brightness(h, HKEY_GET, &arg);
arg += max / HKEY_LCD_BRIGHTNESS_DIV;
if (arg < min)
arg = min;
else if (arg > max)
arg = max;
hkey_lcd_brightness(h, HKEY_SET, &arg);
break;
case 4:
/* Toggle sound mute. */
hkey_sound_mute(h, HKEY_GET, &arg);
if (arg)
arg = 0;
else
arg = 1;
hkey_sound_mute(h, HKEY_SET, &arg);
break;
case 7:
/* Suspend. */
acpi_event_sleep_button_sleep(acpi_sc);
break;
}
}
static void
acpi_panasonic_notify(ACPI_HANDLE h, UINT32 notify, void *context)
{
struct acpi_panasonic_softc *sc;
UINT32 key = 0;
sc = (struct acpi_panasonic_softc *)context;
switch (notify) {
case 0x80:
ACPI_SERIAL_BEGIN(panasonic);
if (acpi_panasonic_hkey_event(sc, h, &key) == 0) {
acpi_panasonic_hkey_action(sc, h, key);
acpi_UserNotify("Panasonic", h, (uint8_t)key);
}
ACPI_SERIAL_END(panasonic);
break;
default:
device_printf(sc->dev, "unknown notify: %#x\n", notify);
break;
}
}
static void
acpi_panasonic_power_profile(void *arg)
{
ACPI_HANDLE handle;
UINT32 brightness;
handle = (ACPI_HANDLE)arg;
/* Reset current brightness according to new power state. */
ACPI_SERIAL_BEGIN(panasonic);
hkey_lcd_brightness(handle, HKEY_GET, &brightness);
hkey_lcd_brightness(handle, HKEY_SET, &brightness);
ACPI_SERIAL_END(panasonic);
}