9f65aa0340
MFC after: 3 days
424 lines
10 KiB
C
424 lines
10 KiB
C
/*-
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* Copyright (c) 2003 OGAWA Takaya <t-ogawa@triaez.kaisei.org>
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* Copyright (c) 2004 Yoshihiro TAKAHASHI <nyan@FreeBSD.org>
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* All rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include "acpi.h"
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#include <dev/acpica/acpivar.h>
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/* Debug */
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#undef ACPI_PANASONIC_DEBUG
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/* Operations */
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#define HKEY_SET 0
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#define HKEY_GET 1
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/* Functions */
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#define HKEY_REG_LCD_BRIGHTNESS 0x04
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#define HKEY_REG_SOUND_MUTE 0x08
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/* Field definitions */
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#define HKEY_LCD_BRIGHTNESS_BITS 4
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#define HKEY_LCD_BRIGHTNESS_DIV ((1 << HKEY_LCD_BRIGHTNESS_BITS) - 1)
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struct acpi_panasonic_softc {
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device_t dev;
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ACPI_HANDLE handle;
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struct sysctl_ctx_list sysctl_ctx;
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struct sysctl_oid *sysctl_tree;
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};
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/* Prototype for HKEY functions for getting/setting a value. */
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typedef int hkey_fn_t(ACPI_HANDLE, int, UINT32 *);
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static int acpi_panasonic_probe(device_t dev);
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static int acpi_panasonic_attach(device_t dev);
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static int acpi_panasonic_detach(device_t dev);
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static int acpi_panasonic_sysctl(SYSCTL_HANDLER_ARGS);
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static ACPI_INTEGER acpi_panasonic_sinf(ACPI_HANDLE h, ACPI_INTEGER index);
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static void acpi_panasonic_sset(ACPI_HANDLE h, ACPI_INTEGER index,
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ACPI_INTEGER val);
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static int acpi_panasonic_hkey_event(struct acpi_panasonic_softc *sc,
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ACPI_HANDLE h, UINT32 *arg);
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static void acpi_panasonic_hkey_action(struct acpi_panasonic_softc *sc,
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ACPI_HANDLE h, UINT32 key);
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static void acpi_panasonic_notify(ACPI_HANDLE h, UINT32 notify,
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void *context);
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static hkey_fn_t hkey_lcd_brightness_max;
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static hkey_fn_t hkey_lcd_brightness;
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static hkey_fn_t hkey_sound_mute;
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static int lcd_brightness_max = 255;
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ACPI_SERIAL_DECL(panasonic, "ACPI Panasonic extras");
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/* Table of sysctl names and HKEY functions to call. */
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static struct {
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char *name;
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hkey_fn_t *handler;
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} sysctl_table[] = {
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/* name, handler */
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{"lcd_brightness_max", hkey_lcd_brightness_max},
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{"lcd_brightness", hkey_lcd_brightness},
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{"sound_mute", hkey_sound_mute},
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{NULL, NULL}
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};
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static device_method_t acpi_panasonic_methods[] = {
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DEVMETHOD(device_probe, acpi_panasonic_probe),
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DEVMETHOD(device_attach, acpi_panasonic_attach),
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DEVMETHOD(device_detach, acpi_panasonic_detach),
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{0, 0}
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};
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static driver_t acpi_panasonic_driver = {
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"acpi_panasonic",
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acpi_panasonic_methods,
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sizeof(struct acpi_panasonic_softc),
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};
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static devclass_t acpi_panasonic_devclass;
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DRIVER_MODULE(acpi_panasonic, acpi, acpi_panasonic_driver,
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acpi_panasonic_devclass, 0, 0);
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MODULE_DEPEND(acpi_panasonic, acpi, 1, 1, 1);
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static int
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acpi_panasonic_probe(device_t dev)
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{
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static char *mat_ids[] = { "MAT0019", NULL };
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if (acpi_disabled("panasonic") ||
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ACPI_ID_PROBE(device_get_parent(dev), dev, mat_ids) == NULL ||
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device_get_unit(dev) != 0)
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return (ENXIO);
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device_set_desc(dev, "Panasonic Notebook Hotkeys");
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return (0);
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}
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static int
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acpi_panasonic_attach(device_t dev)
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{
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struct acpi_panasonic_softc *sc;
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struct acpi_softc *acpi_sc;
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ACPI_STATUS status;
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int i;
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sc = device_get_softc(dev);
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sc->dev = dev;
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sc->handle = acpi_get_handle(dev);
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acpi_sc = acpi_device_get_parent_softc(dev);
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/* Build sysctl tree */
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sysctl_ctx_init(&sc->sysctl_ctx);
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sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
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SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO,
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"panasonic", CTLFLAG_RD, 0, "");
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for (i = 0; sysctl_table[i].name != NULL; i++) {
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SYSCTL_ADD_PROC(&sc->sysctl_ctx,
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SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
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sysctl_table[i].name,
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CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY,
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sc, i, acpi_panasonic_sysctl, "I", "");
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}
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#if 0
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/* Activate hotkeys */
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status = AcpiEvaluateObject(sc->handle, "", NULL, NULL);
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if (ACPI_FAILURE(status)) {
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device_printf(dev, "enable FN keys failed\n");
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sysctl_ctx_free(&sc->sysctl_ctx);
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return (ENXIO);
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}
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#endif
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/* Handle notifies */
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status = AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
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acpi_panasonic_notify, sc);
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if (ACPI_FAILURE(status)) {
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device_printf(dev, "couldn't install notify handler - %s\n",
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AcpiFormatException(status));
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sysctl_ctx_free(&sc->sysctl_ctx);
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return (ENXIO);
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}
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return (0);
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}
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static int
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acpi_panasonic_detach(device_t dev)
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{
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struct acpi_panasonic_softc *sc;
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sc = device_get_softc(dev);
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/* Remove notify handler */
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AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
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acpi_panasonic_notify);
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/* Free sysctl tree */
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sysctl_ctx_free(&sc->sysctl_ctx);
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return (0);
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}
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static int
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acpi_panasonic_sysctl(SYSCTL_HANDLER_ARGS)
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{
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struct acpi_panasonic_softc *sc;
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UINT32 arg;
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int function, error;
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hkey_fn_t *handler;
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sc = (struct acpi_panasonic_softc *)oidp->oid_arg1;
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function = oidp->oid_arg2;
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handler = sysctl_table[function].handler;
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/* Get the current value from the appropriate function. */
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ACPI_SERIAL_BEGIN(panasonic);
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error = handler(sc->handle, HKEY_GET, &arg);
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if (error != 0)
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goto out;
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/* Send the current value to the user and return if no new value. */
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error = sysctl_handle_int(oidp, &arg, 0, req);
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if (error != 0 || req->newptr == NULL)
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goto out;
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/* Set the new value via the appropriate function. */
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error = handler(sc->handle, HKEY_SET, &arg);
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out:
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ACPI_SERIAL_END(panasonic);
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return (error);
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}
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static ACPI_INTEGER
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acpi_panasonic_sinf(ACPI_HANDLE h, ACPI_INTEGER index)
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{
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ACPI_BUFFER buf;
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ACPI_OBJECT *res;
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ACPI_INTEGER ret;
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ACPI_SERIAL_ASSERT(panasonic);
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ret = -1;
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buf.Length = ACPI_ALLOCATE_BUFFER;
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buf.Pointer = NULL;
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AcpiEvaluateObject(h, "SINF", NULL, &buf);
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res = (ACPI_OBJECT *)buf.Pointer;
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if (res->Type == ACPI_TYPE_PACKAGE)
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ret = res->Package.Elements[index].Integer.Value;
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AcpiOsFree(buf.Pointer);
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return (ret);
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}
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static void
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acpi_panasonic_sset(ACPI_HANDLE h, ACPI_INTEGER index, ACPI_INTEGER val)
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{
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ACPI_OBJECT_LIST args;
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ACPI_OBJECT obj[2];
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ACPI_SERIAL_ASSERT(panasonic);
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obj[0].Type = ACPI_TYPE_INTEGER;
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obj[0].Integer.Value = index;
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obj[1].Type = ACPI_TYPE_INTEGER;
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obj[1].Integer.Value = val;
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args.Count = 2;
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args.Pointer = obj;
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AcpiEvaluateObject(h, "SSET", &args, NULL);
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}
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static int
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hkey_lcd_brightness_max(ACPI_HANDLE h, int op, UINT32 *val)
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{
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ACPI_SERIAL_ASSERT(panasonic);
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switch (op) {
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case HKEY_SET:
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if (*val < 0 || *val > 255)
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return (EINVAL);
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lcd_brightness_max = *val;
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break;
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case HKEY_GET:
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*val = lcd_brightness_max;
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break;
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}
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return (0);
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}
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static int
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hkey_lcd_brightness(ACPI_HANDLE h, int op, UINT32 *val)
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{
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ACPI_SERIAL_ASSERT(panasonic);
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switch (op) {
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case HKEY_SET:
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if (*val < 0 || *val > lcd_brightness_max)
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return (EINVAL);
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acpi_panasonic_sset(h, HKEY_REG_LCD_BRIGHTNESS, *val);
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break;
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case HKEY_GET:
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*val = acpi_panasonic_sinf(h, HKEY_REG_LCD_BRIGHTNESS);
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break;
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}
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return (0);
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}
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static int
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hkey_sound_mute(ACPI_HANDLE h, int op, UINT32 *val)
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{
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ACPI_SERIAL_ASSERT(panasonic);
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switch (op) {
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case HKEY_SET:
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if (*val != 0 && *val != 1)
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return (EINVAL);
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acpi_panasonic_sset(h, HKEY_REG_SOUND_MUTE, *val);
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break;
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case HKEY_GET:
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*val = acpi_panasonic_sinf(h, HKEY_REG_SOUND_MUTE);
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break;
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}
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return (0);
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}
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static int
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acpi_panasonic_hkey_event(struct acpi_panasonic_softc *sc, ACPI_HANDLE h,
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UINT32 *arg)
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{
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ACPI_BUFFER buf;
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ACPI_OBJECT *res;
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ACPI_INTEGER val;
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int status;
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ACPI_SERIAL_ASSERT(panasonic);
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status = ENXIO;
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buf.Length = ACPI_ALLOCATE_BUFFER;
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buf.Pointer = NULL;
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AcpiEvaluateObject(h, "HINF", NULL, &buf);
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res = (ACPI_OBJECT *)buf.Pointer;
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if (res->Type != ACPI_TYPE_INTEGER) {
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device_printf(sc->dev, "HINF returned non-integer\n");
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goto end;
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}
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val = res->Integer.Value;
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#ifdef ACPI_PANASONIC_DEBUG
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device_printf(sc->dev, "%s button Fn+F%d\n",
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(val & 0x80) ? "Pressed" : "Released",
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(int)(val & 0x7f));
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#endif
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if ((val & 0x7f) > 0 && (val & 0x7f) < 11) {
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*arg = val;
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status = 0;
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}
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end:
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if (buf.Pointer)
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AcpiOsFree(buf.Pointer);
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return (status);
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}
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static void
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acpi_panasonic_hkey_action(struct acpi_panasonic_softc *sc, ACPI_HANDLE h,
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UINT32 key)
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{
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int arg;
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ACPI_SERIAL_ASSERT(panasonic);
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switch (key) {
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case 1:
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/* Decrease LCD brightness. */
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hkey_lcd_brightness(h, HKEY_GET, &arg);
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arg -= lcd_brightness_max / HKEY_LCD_BRIGHTNESS_DIV;
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if (arg < 0)
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arg = 0;
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else if (arg > lcd_brightness_max)
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arg = lcd_brightness_max;
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hkey_lcd_brightness(h, HKEY_SET, &arg);
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break;
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case 2:
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/* Increase LCD brightness. */
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hkey_lcd_brightness(h, HKEY_GET, &arg);
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arg += lcd_brightness_max / HKEY_LCD_BRIGHTNESS_DIV;
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if (arg < 0)
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arg = 0;
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else if (arg > lcd_brightness_max)
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arg = lcd_brightness_max;
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hkey_lcd_brightness(h, HKEY_SET, &arg);
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break;
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case 4:
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/* Toggle sound mute. */
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hkey_sound_mute(h, HKEY_GET, &arg);
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if (arg)
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arg = 0;
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else
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arg = 1;
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hkey_sound_mute(h, HKEY_SET, &arg);
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break;
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}
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}
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static void
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acpi_panasonic_notify(ACPI_HANDLE h, UINT32 notify, void *context)
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{
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struct acpi_panasonic_softc *sc;
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UINT32 key;
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sc = (struct acpi_panasonic_softc *)context;
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switch (notify) {
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case 0x80:
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ACPI_SERIAL_BEGIN(panasonic);
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if (acpi_panasonic_hkey_event(sc, h, &key) == 0) {
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acpi_panasonic_hkey_action(sc, h, key);
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acpi_UserNotify("Panasonic", h, (uint8_t)key);
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}
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ACPI_SERIAL_END(panasonic);
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break;
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default:
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device_printf(sc->dev, "unknown notify: %#x\n", notify);
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break;
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}
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}
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