diff options
| author | christos <christos@NetBSD.org> | 2005-12-11 02:40:25 +0000 |
|---|---|---|
| committer | christos <christos@NetBSD.org> | 2005-12-11 02:40:25 +0000 |
| commit | e87cf683adfb4a81c57a6032c2079b1663ea6fb8 (patch) | |
| tree | a84780a095d8e7cffc27089c33965a5de272f965 /sys | |
| parent | 0c135721c43495c87d7ada6818a70ddcce375b70 (diff) | |
PR/32276: Sami Kantoluoto: Add driver to handle brightness control on Sony
VAIO.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/i386/acpi/sony_acpi.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/sys/arch/i386/acpi/sony_acpi.c b/sys/arch/i386/acpi/sony_acpi.c new file mode 100644 index 00000000000..2ac0f28bfb9 --- /dev/null +++ b/sys/arch/i386/acpi/sony_acpi.c @@ -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 +} |
