freebsd-dev/sys/i386/acpica/acpi_toshiba.c
Nate Lawson 3184cf5a6b Add support for quirks for acpi tables. Key off OEM vendor and revision.
Sort acpi debug values.  Change "disable" to "disabled" to match rest of
the kernel.  Remove debugging from acpi_toshiba since it was only used for
probe/attach.
2004-03-03 03:02:17 +00:00

481 lines
13 KiB
C

/*-
* Copyright (c) 2003 Hiroyuki Aizu <aizu@navi.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("$FreeBSD$");
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include "acpi.h"
#include <dev/acpica/acpivar.h>
/*
* Toshiba HCI interface definitions
*
* HCI is Toshiba's "Hardware Control Interface" which is supposed to
* be uniform across all their models. Ideally we would just call
* dedicated ACPI methods instead of using this primitive interface.
* However, the ACPI methods seem to be incomplete in some areas (for
* example they allow setting, but not reading, the LCD brightness
* value), so this is still useful.
*/
#define METHOD_HCI "GHCI"
#define METHOD_HCI_ENABLE "ENAB"
/* Operations */
#define HCI_SET 0xFF00
#define HCI_GET 0xFE00
/* Return codes */
#define HCI_SUCCESS 0x0000
#define HCI_FAILURE 0x1000
#define HCI_NOT_SUPPORTED 0x8000
#define HCI_EMPTY 0x8C00
/* Functions */
#define HCI_REG_LCD_BACKLIGHT 0x0002
#define HCI_REG_FAN 0x0004
#define HCI_REG_SYSTEM_EVENT 0x0016
#define HCI_REG_VIDEO_OUTPUT 0x001C
#define HCI_REG_HOTKEY_EVENT 0x001E
#define HCI_REG_LCD_BRIGHTNESS 0x002A
#define HCI_REG_CPU_SPEED 0x0032
/* Field definitions */
#define HCI_FAN_SHIFT 7
#define HCI_LCD_BRIGHTNESS_BITS 3
#define HCI_LCD_BRIGHTNESS_SHIFT (16 - HCI_LCD_BRIGHTNESS_BITS)
#define HCI_LCD_BRIGHTNESS_MAX ((1 << HCI_LCD_BRIGHTNESS_BITS) - 1)
#define HCI_VIDEO_OUTPUT_FLAG 0x0100
#define HCI_VIDEO_OUTPUT_LCD 0x1
#define HCI_VIDEO_OUTPUT_CRT 0x2
#define HCI_VIDEO_OUTPUT_TV 0x4
#define HCI_CPU_SPEED_BITS 3
#define HCI_CPU_SPEED_SHIFT (16 - HCI_CPU_SPEED_BITS)
#define HCI_CPU_SPEED_MAX ((1 << HCI_CPU_SPEED_BITS) - 1)
/* Key press/release events. */
#define FN_F1_PRESS 0x013B
#define FN_F1_RELEASE 0x01BB
#define FN_F2_PRESS 0x013C
#define FN_F2_RELEASE 0x01BC
#define FN_F3_PRESS 0x013D
#define FN_F3_RELEASE 0x01BD
#define FN_F4_PRESS 0x013E
#define FN_F4_RELEASE 0x01BE
#define FN_F5_PRESS 0x013F
#define FN_F5_RELEASE 0x01BF
#define FN_F6_PRESS 0x0140
#define FN_F6_RELEASE 0x01C0
#define FN_F7_PRESS 0x0141
#define FN_F7_RELEASE 0x01C1
#define FN_F8_PRESS 0x0142
#define FN_F8_RELEASE 0x01C2
#define FN_F9_PRESS 0x0143
#define FN_F9_RELEASE 0x01C3
#define FN_BS_PRESS 0x010E
#define FN_BS_RELEASE 0x018E
#define FN_ESC_PRESS 0x0101
#define FN_ESC_RELEASE 0x0181
#define FN_KNJ_PRESS 0x0129
#define FN_KNJ_RELEASE 0x01A9
/* HCI register definitions. */
#define HCI_WORDS 6 /* Number of registers */
#define HCI_REG_AX 0 /* Operation, then return value */
#define HCI_REG_BX 1 /* Function */
#define HCI_REG_CX 2 /* Argument (in or out) */
#define HCI_REG_DX 3 /* Unused? */
#define HCI_REG_SI 4 /* Unused? */
#define HCI_REG_DI 5 /* Unused? */
struct acpi_toshiba_softc {
device_t dev;
ACPI_HANDLE handle;
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
};
/* Prototype for HCI functions for getting/setting a value. */
typedef int hci_fn_t(ACPI_HANDLE, int, UINT32 *);
static int acpi_toshiba_probe(device_t dev);
static int acpi_toshiba_attach(device_t dev);
static int acpi_toshiba_detach(device_t dev);
static int acpi_toshiba_sysctl(SYSCTL_HANDLER_ARGS);
static hci_fn_t hci_force_fan;
static hci_fn_t hci_video_output;
static hci_fn_t hci_lcd_brightness;
static hci_fn_t hci_lcd_backlight;
static hci_fn_t hci_cpu_speed;
static int hci_call(ACPI_HANDLE h, int op, int function, UINT32 *arg);
static void hci_key_action(ACPI_HANDLE h, UINT32 key);
static void acpi_toshiba_notify(ACPI_HANDLE h, UINT32 notify,
void *context);
/* Table of sysctl names and HCI functions to call. */
static struct {
char *name;
hci_fn_t *handler;
} sysctl_table[] = {
/* name, handler */
{"force_fan", hci_force_fan},
{"video_output", hci_video_output},
{"lcd_brightness", hci_lcd_brightness},
{"lcd_backlight", hci_lcd_backlight},
{"cpu_speed", hci_cpu_speed},
{NULL, NULL}
};
static device_method_t acpi_toshiba_methods[] = {
DEVMETHOD(device_probe, acpi_toshiba_probe),
DEVMETHOD(device_attach, acpi_toshiba_attach),
DEVMETHOD(device_detach, acpi_toshiba_detach),
{0, 0}
};
static driver_t acpi_toshiba_driver = {
"acpi_toshiba",
acpi_toshiba_methods,
sizeof(struct acpi_toshiba_softc),
};
static devclass_t acpi_toshiba_devclass;
DRIVER_MODULE(acpi_toshiba, acpi, acpi_toshiba_driver, acpi_toshiba_devclass,
0, 0);
MODULE_DEPEND(acpi_toshiba, acpi, 100, 100, 100);
static int enable_fn_keys = 1;
TUNABLE_INT("hw.acpi.toshiba.enable_fn_keys", &enable_fn_keys);
/*
* HID Model
* -------------------------------------
* TOS6200 Libretto L Series
* Dynabook Satellite 2455
* Dynabook SS 3500
* TOS6207 Dynabook SS2110 Series
*/
static int
acpi_toshiba_probe(device_t dev)
{
int ret = ENXIO;
if (!acpi_disabled("toshiba") &&
acpi_get_type(dev) == ACPI_TYPE_DEVICE &&
device_get_unit(dev) == 0 &&
(acpi_MatchHid(dev, "TOS6200") ||
acpi_MatchHid(dev, "TOS6207"))) {
device_set_desc(dev, "Toshiba HCI Extras");
ret = 0;
}
return (ret);
}
static int
acpi_toshiba_attach(device_t dev)
{
struct acpi_toshiba_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);
sysctl_ctx_init(&sc->sysctl_ctx);
sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO,
"toshiba", 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_toshiba_sysctl, "I", "");
}
if (enable_fn_keys != 0) {
status = AcpiEvaluateObject(sc->handle, METHOD_HCI_ENABLE,
NULL, NULL);
if (ACPI_FAILURE(status)) {
device_printf(dev, "enable FN keys failed\n");
sysctl_ctx_free(&sc->sysctl_ctx);
return (ENXIO);
}
AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
acpi_toshiba_notify, sc);
}
return (0);
}
static int
acpi_toshiba_detach(device_t dev)
{
struct acpi_toshiba_softc *sc;
sc = device_get_softc(dev);
if (enable_fn_keys != 0) {
AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
acpi_toshiba_notify);
}
sysctl_ctx_free(&sc->sysctl_ctx);
return (0);
}
static int
acpi_toshiba_sysctl(SYSCTL_HANDLER_ARGS)
{
struct acpi_toshiba_softc *sc;
UINT32 arg;
int function, error = 0;
hci_fn_t *handler;
sc = (struct acpi_toshiba_softc *)oidp->oid_arg1;
function = oidp->oid_arg2;
handler = sysctl_table[function].handler;
/* Get the current value from the appropriate function. */
error = handler(sc->handle, HCI_GET, &arg);
if (error != 0)
return (error);
/* 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)
return (error);
/* Set the new value via the appropriate function. */
error = handler(sc->handle, HCI_SET, &arg);
return (error);
}
static int
hci_force_fan(ACPI_HANDLE h, int op, UINT32 *state)
{
int ret;
if (op == HCI_SET) {
if (*state < 0 || *state > 1)
return (EINVAL);
*state <<= HCI_FAN_SHIFT;
}
ret = hci_call(h, op, HCI_REG_FAN, state);
if (ret == 0 && op == HCI_GET)
*state >>= HCI_FAN_SHIFT;
return (ret);
}
static int
hci_video_output(ACPI_HANDLE h, int op, UINT32 *video_output)
{
int ret;
if (op == HCI_SET) {
if (*video_output < 1 || *video_output > 7)
return (EINVAL);
*video_output |= HCI_VIDEO_OUTPUT_FLAG;
}
ret = hci_call(h, op, HCI_REG_VIDEO_OUTPUT, video_output);
if (ret == 0 && op == HCI_GET)
*video_output &= 0xff;
return (ret);
}
static int
hci_lcd_brightness(ACPI_HANDLE h, int op, UINT32 *brightness)
{
int ret;
if (op == HCI_SET) {
if (*brightness < 0 || *brightness > HCI_LCD_BRIGHTNESS_MAX)
return (EINVAL);
*brightness <<= HCI_LCD_BRIGHTNESS_SHIFT;
}
ret = hci_call(h, op, HCI_REG_LCD_BRIGHTNESS, brightness);
if (ret == 0 && op == HCI_GET)
*brightness >>= HCI_LCD_BRIGHTNESS_SHIFT;
return (ret);
}
static int
hci_lcd_backlight(ACPI_HANDLE h, int op, UINT32 *backlight)
{
if (op == HCI_SET) {
if (*backlight < 0 || *backlight > 1)
return (EINVAL);
}
return (hci_call(h, op, HCI_REG_LCD_BACKLIGHT, backlight));
}
static int
hci_cpu_speed(ACPI_HANDLE h, int op, UINT32 *speed)
{
int ret;
if (op == HCI_SET) {
if (*speed < 0 || *speed > HCI_CPU_SPEED_MAX)
return (EINVAL);
*speed <<= HCI_CPU_SPEED_SHIFT;
}
ret = hci_call(h, op, HCI_REG_CPU_SPEED, speed);
if (ret == 0 && op == HCI_GET)
*speed >>= HCI_CPU_SPEED_SHIFT;
return (ret);
}
static int
hci_call(ACPI_HANDLE h, int op, int function, UINT32 *arg)
{
ACPI_OBJECT_LIST args;
ACPI_BUFFER results;
ACPI_OBJECT obj[HCI_WORDS];
ACPI_OBJECT *res;
int status, i, ret;
status = ENXIO;
for (i = 0; i < HCI_WORDS; i++) {
obj[i].Type = ACPI_TYPE_INTEGER;
obj[i].Integer.Value = 0;
}
obj[HCI_REG_AX].Integer.Value = op;
obj[HCI_REG_BX].Integer.Value = function;
if (op == HCI_SET)
obj[HCI_REG_CX].Integer.Value = *arg;
args.Count = HCI_WORDS;
args.Pointer = obj;
results.Pointer = NULL;
results.Length = ACPI_ALLOCATE_BUFFER;
if (ACPI_FAILURE(AcpiEvaluateObject(h, METHOD_HCI, &args, &results)))
goto end;
res = (ACPI_OBJECT *)results.Pointer;
if (!ACPI_PKG_VALID(res, HCI_WORDS)) {
printf("toshiba: invalid package!\n");
return (ENXIO);
}
acpi_PkgInt32(res, HCI_REG_AX, &ret);
if (ret == HCI_SUCCESS) {
if (op == HCI_GET)
acpi_PkgInt32(res, HCI_REG_CX, arg);
status = 0;
} else if (function == HCI_REG_SYSTEM_EVENT && op == HCI_GET &&
ret == HCI_NOT_SUPPORTED) {
/*
* Sometimes system events are disabled without us requesting
* it. This workaround attempts to re-enable them.
*/
i = 1;
hci_call(h, HCI_SET, HCI_REG_SYSTEM_EVENT, &i);
}
end:
if (results.Pointer != NULL)
AcpiOsFree(results.Pointer);
return (status);
}
/*
* Perform a few actions based on the keypress. Users can extend this
* functionality by reading the keystrokes we send to devd(8).
*/
static void
hci_key_action(ACPI_HANDLE h, UINT32 key)
{
UINT32 arg;
switch (key) {
case FN_F6_RELEASE:
/* Decrease LCD brightness. */
hci_lcd_brightness(h, HCI_GET, &arg);
if (arg-- == 0)
arg = 0;
else
hci_lcd_brightness(h, HCI_SET, &arg);
break;
case FN_F7_RELEASE:
/* Increase LCD brightness. */
hci_lcd_brightness(h, HCI_GET, &arg);
if (arg++ == 7)
arg = 7;
else
hci_lcd_brightness(h, HCI_SET, &arg);
break;
case FN_F5_RELEASE:
/* Cycle through video outputs. */
hci_video_output(h, HCI_GET, &arg);
arg = (arg + 1) % 7;
hci_video_output(h, HCI_SET, &arg);
break;
case FN_F8_RELEASE:
/* Toggle LCD backlight. */
hci_lcd_backlight(h, HCI_GET, &arg);
arg = (arg != 0) ? 0 : 1;
hci_lcd_backlight(h, HCI_SET, &arg);
break;
case FN_ESC_RELEASE:
/* Toggle forcing fan on. */
hci_force_fan(h, HCI_GET, &arg);
arg = (arg != 0) ? 0 : 1;
hci_force_fan(h, HCI_SET, &arg);
break;
}
}
static void
acpi_toshiba_notify(ACPI_HANDLE h, UINT32 notify, void *context)
{
struct acpi_toshiba_softc *sc;
UINT32 key;
sc = (struct acpi_toshiba_softc *)context;
if (notify == 0x80) {
while (hci_call(h, HCI_GET, HCI_REG_SYSTEM_EVENT, &key) == 0) {
hci_key_action(h, key);
acpi_UserNotify("TOSHIBA", h, (uint8_t)key);
}
} else {
device_printf(sc->dev, "unknown notify: 0x%x\n", notify);
}
}