PR/32276: Sami Kantoluoto: Add driver to handle brightness control on Sony
VAIO.
This commit is contained in:
christos
parent
0c135721c4
commit
e87cf683ad
|
|
@ -0,0 +1,231 @@
|
|||
/* $NetBSD: sony_acpi.c,v 1.1 2005/12/11 02:40:25 christos Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2005 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Christos Zoulas.
|
||||
*
|
||||
* 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.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
|
||||
__KERNEL_RCSID(0, "$NetBSD: sony_acpi.c,v 1.1 2005/12/11 02:40:25 christos Exp $");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/device.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/callout.h>
|
||||
#include <sys/sysctl.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <dev/acpi/acpica.h>
|
||||
#include <dev/acpi/acpivar.h>
|
||||
|
||||
struct sony_acpi_softc {
|
||||
struct device sc_dev;
|
||||
struct sysctllog *sc_log;
|
||||
struct acpi_devnode *sc_node;
|
||||
};
|
||||
|
||||
static const char * const sony_acpi_ids[] = {
|
||||
"SNY5001",
|
||||
NULL
|
||||
};
|
||||
|
||||
static int sony_acpi_match(struct device *, struct cfdata *, void *);
|
||||
static void sony_acpi_attach(struct device *, struct device *, void *);
|
||||
static ACPI_STATUS sony_acpi_eval_set_integer(ACPI_HANDLE, const char *,
|
||||
ACPI_INTEGER, ACPI_INTEGER *);
|
||||
|
||||
|
||||
CFATTACH_DECL(sony_acpi, sizeof(struct sony_acpi_softc),
|
||||
sony_acpi_match, sony_acpi_attach, NULL, NULL);
|
||||
|
||||
static int
|
||||
sony_acpi_match(struct device *parent, struct cfdata *match, void *aux)
|
||||
{
|
||||
struct acpi_attach_args *aa = aux;
|
||||
|
||||
if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
|
||||
return 0;
|
||||
|
||||
return acpi_match_hid(aa->aa_node->ad_devinfo, sony_acpi_ids);
|
||||
}
|
||||
|
||||
static int
|
||||
sony_sysctl_helper(SYSCTLFN_ARGS)
|
||||
{
|
||||
struct sysctlnode node;
|
||||
ACPI_INTEGER acpi_val;
|
||||
ACPI_STATUS rv;
|
||||
int val, old_val, error;
|
||||
char buf[SYSCTL_NAMELEN + 1], *ptr;
|
||||
struct sony_acpi_softc *sc = rnode->sysctl_data;
|
||||
|
||||
(void)snprintf(buf, sizeof(buf), "G%s", rnode->sysctl_name);
|
||||
for (ptr = buf; *ptr; ptr++)
|
||||
*ptr = toupper(*ptr);
|
||||
|
||||
rv = acpi_eval_integer(sc->sc_node->ad_handle, buf, &acpi_val);
|
||||
if (ACPI_FAILURE(rv)) {
|
||||
#ifdef DIAGNOSTIC
|
||||
printf("%s: couldn't get `%s'\n", sc->sc_dev.dv_xname, buf);
|
||||
#endif
|
||||
return EIO;
|
||||
}
|
||||
val = old_val = acpi_val;
|
||||
|
||||
node = *rnode;
|
||||
node.sysctl_data = &val;
|
||||
|
||||
error = sysctl_lookup(SYSCTLFN_CALL(&node));
|
||||
if (error || newp == NULL || val == old_val)
|
||||
return error;
|
||||
|
||||
(void)snprintf(buf, sizeof(buf), "S%s", rnode->sysctl_name);
|
||||
acpi_val = val;
|
||||
rv = sony_acpi_eval_set_integer(sc->sc_node->ad_handle, buf,
|
||||
acpi_val, NULL);
|
||||
if (ACPI_FAILURE(rv)) {
|
||||
#ifdef DIAGNOSTIC
|
||||
printf("%s: couldn't set `%s' to %d\n",
|
||||
sc->sc_dev.dv_xname, buf, val);
|
||||
#endif
|
||||
return EIO;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ACPI_STATUS
|
||||
sony_walk_cb(ACPI_HANDLE hnd, UINT32 v, void *context, void **status)
|
||||
{
|
||||
struct sony_acpi_softc *sc = (void*)context;
|
||||
const struct sysctlnode *node, *snode;
|
||||
const char *name = acpi_name(hnd);
|
||||
ACPI_INTEGER acpi_val;
|
||||
char buf[SYSCTL_NAMELEN + 1], *ptr;
|
||||
int rv;
|
||||
|
||||
if ((name = strrchr(name, '.')) == NULL)
|
||||
return AE_OK;
|
||||
|
||||
name++;
|
||||
if ((*name != 'G') && (*name != 'S'))
|
||||
return AE_OK;
|
||||
|
||||
(void)strlcpy(buf, name, sizeof(buf));
|
||||
*buf = 'G';
|
||||
|
||||
/*
|
||||
* We assume that if the 'get' of the name as an integer is
|
||||
* successful it is ok.
|
||||
*/
|
||||
if (acpi_eval_integer(sc->sc_node->ad_handle, buf, &acpi_val))
|
||||
return AE_OK;
|
||||
|
||||
for (ptr = buf; *ptr; ptr++)
|
||||
*ptr = tolower(*ptr);
|
||||
|
||||
if ((rv = sysctl_createv(&sc->sc_log, 0, NULL, &node, CTLFLAG_PERMANENT,
|
||||
CTLTYPE_NODE, "hw", NULL, NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0)
|
||||
goto out;
|
||||
|
||||
if ((rv = sysctl_createv(&sc->sc_log, 0, &node, &snode, 0,
|
||||
CTLTYPE_NODE, sc->sc_dev.dv_xname, SYSCTL_DESCR("sony controls"),
|
||||
NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0)
|
||||
goto out;
|
||||
|
||||
if ((rv = sysctl_createv(&sc->sc_log, 0, &snode, &node,
|
||||
CTLFLAG_READWRITE, CTLTYPE_INT, buf + 1, NULL,
|
||||
sony_sysctl_helper, 0, sc, 0, CTL_CREATE, CTL_EOL)) != 0)
|
||||
goto out;
|
||||
|
||||
out:
|
||||
#ifdef DIAGNOSTIC
|
||||
if (rv)
|
||||
printf("%s: sysctl_createv failed (rv = %d)\n",
|
||||
sc->sc_dev.dv_xname, rv);
|
||||
#endif
|
||||
return AE_OK;
|
||||
}
|
||||
|
||||
ACPI_STATUS
|
||||
sony_acpi_eval_set_integer(ACPI_HANDLE handle, const char *path,
|
||||
ACPI_INTEGER val, ACPI_INTEGER *valp)
|
||||
{
|
||||
ACPI_STATUS rv;
|
||||
ACPI_BUFFER buf;
|
||||
ACPI_OBJECT param, ret_val;
|
||||
ACPI_OBJECT_LIST params;
|
||||
|
||||
if (handle == NULL)
|
||||
handle = ACPI_ROOT_OBJECT;
|
||||
|
||||
params.Count = 1;
|
||||
params.Pointer = ¶m;
|
||||
|
||||
param.Type = ACPI_TYPE_INTEGER;
|
||||
param.Integer.Value = val;
|
||||
|
||||
buf.Pointer = &ret_val;
|
||||
buf.Length = sizeof(ret_val);
|
||||
|
||||
rv = AcpiEvaluateObjectTyped(handle, path, ¶ms, &buf,
|
||||
ACPI_TYPE_INTEGER);
|
||||
|
||||
if (ACPI_SUCCESS(rv) && valp)
|
||||
*valp = ret_val.Integer.Value;
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
static void
|
||||
sony_acpi_attach(struct device *parent, struct device *self, void *aux)
|
||||
{
|
||||
struct sony_acpi_softc *sc = (void *)self;
|
||||
struct acpi_attach_args *aa = aux;
|
||||
ACPI_STATUS rv;
|
||||
|
||||
printf(": Sony Miscellaneous Controller\n");
|
||||
|
||||
sc->sc_node = aa->aa_node;
|
||||
|
||||
/* Install sysctl handler */
|
||||
rv = AcpiWalkNamespace(ACPI_TYPE_METHOD,
|
||||
sc->sc_node->ad_handle, 1, sony_walk_cb, sc, NULL);
|
||||
#ifdef DIAGNOSTIC
|
||||
if (ACPI_FAILURE(rv))
|
||||
printf("%s: Cannot walk ACPI namespace (%d)\n",
|
||||
sc->sc_dev.dv_xname, rv);
|
||||
#endif
|
||||
}
|
||||
Loading…
Reference in New Issue