/* $OpenBSD: acpivideo.c,v 1.7 2010/07/27 06:12:50 deraadt Exp $ */ /* * Copyright (c) 2008 Federico G. Schwindt * Copyright (c) 2009 Paul Irofti * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #ifdef ACPIVIDEO_DEBUG #define DPRINTF(x) printf x #else #define DPRINTF(x) #endif /* _DOS Enable/Disable Output Switching */ #define DOS_SWITCH_BY_OSPM 0 #define DOS_SWITCH_BY_BIOS 1 #define DOS_SWITCH_LOCKED 2 #define DOS_SWITCH_BY_OSPM_EXT 3 #define DOS_BRIGHTNESS_BY_OSPM 4 /* Notifications for Displays Devices */ #define NOTIFY_OUTPUT_SWITCHED 0x80 #define NOTIFY_OUTPUT_CHANGED 0x81 #define NOTIFY_OUTPUT_CYCLE_KEY 0x82 #define NOTIFY_OUTPUT_NEXT_KEY 0x83 #define NOTIFY_OUTPUT_PREV_KEY 0x84 int acpivideo_match(struct device *, void *, void *); void acpivideo_attach(struct device *, struct device *, void *); int acpivideo_notify(struct aml_node *, int, void *); void acpivideo_set_policy(struct acpivideo_softc *, int); void acpivideo_get_dod(struct acpivideo_softc *); int acpi_foundvout(struct aml_node *, void *); int acpivideo_print(void *, const char *); int acpivideo_getpcibus(struct acpivideo_softc *, struct aml_node *); struct cfattach acpivideo_ca = { sizeof(struct acpivideo_softc), acpivideo_match, acpivideo_attach }; struct cfdriver acpivideo_cd = { NULL, "acpivideo", DV_DULL }; int acpivideo_match(struct device *parent, void *match, void *aux) { struct acpi_attach_args *aaa = aux; struct cfdata *cf = match; if (aaa->aaa_name == NULL || strcmp(aaa->aaa_name, cf->cf_driver->cd_name) != 0 || aaa->aaa_table != NULL) return (0); return (1); } void acpivideo_attach(struct device *parent, struct device *self, void *aux) { struct acpivideo_softc *sc = (struct acpivideo_softc *)self; struct acpi_attach_args *aaa = aux; sc->sc_acpi = (struct acpi_softc *)parent; sc->sc_devnode = aaa->aaa_node; printf(": %s\n", sc->sc_devnode->name); if (acpivideo_getpcibus(sc, sc->sc_devnode) == -1) return; aml_register_notify(sc->sc_devnode, aaa->aaa_dev, acpivideo_notify, sc, ACPIDEV_NOPOLL); acpivideo_set_policy(sc, DOS_SWITCH_BY_OSPM | DOS_BRIGHTNESS_BY_OSPM); acpivideo_get_dod(sc); aml_find_node(aaa->aaa_node, "_DCS", acpi_foundvout, sc); aml_find_node(aaa->aaa_node, "_BCL", acpi_foundvout, sc); } int acpivideo_notify(struct aml_node *node, int notify, void *arg) { struct acpivideo_softc *sc = arg; switch (notify) { case NOTIFY_OUTPUT_SWITCHED: case NOTIFY_OUTPUT_CHANGED: case NOTIFY_OUTPUT_CYCLE_KEY: case NOTIFY_OUTPUT_NEXT_KEY: case NOTIFY_OUTPUT_PREV_KEY: DPRINTF(("%s: event 0x%02x\n", DEVNAME(sc), notify)); break; default: printf("%s: unknown event 0x%02x\n", DEVNAME(sc), notify); break; } return (0); } void acpivideo_set_policy(struct acpivideo_softc *sc, int policy) { struct aml_value args, res; memset(&args, 0, sizeof(args)); args.v_integer = policy; args.type = AML_OBJTYPE_INTEGER; aml_evalname(sc->sc_acpi, sc->sc_devnode, "_DOS", 1, &args, &res); DPRINTF(("%s: set policy to %d", DEVNAME(sc), aml_val2int(&res))); aml_freevalue(&res); } int acpi_foundvout(struct aml_node *node, void *arg) { struct aml_value res; int i, addr; char fattach = 0; struct acpivideo_softc *sc = (struct acpivideo_softc *)arg; struct device *self = (struct device *)arg; struct acpivideo_attach_args av; if (sc->sc_dod == NULL) return (0); DPRINTF(("Inside acpi_foundvout()")); if (aml_evalname(sc->sc_acpi, node->parent, "_ADR", 0, NULL, &res)) { DPRINTF(("%s: no _ADR\n", DEVNAME(sc))); return (0); } addr = aml_val2int(&res); DPRINTF(("_ADR: %X\n", addr)); aml_freevalue(&res); for (i = 0; i < sc->sc_dod_len; i++) if (addr == (sc->sc_dod[i]&0xffff)) { DPRINTF(("Matched: %X\n", sc->sc_dod[i])); fattach = 1; break; } if (fattach) { memset(&av, 0, sizeof(av)); av.aaa.aaa_iot = sc->sc_acpi->sc_iot; av.aaa.aaa_memt = sc->sc_acpi->sc_memt; av.aaa.aaa_node = node->parent; av.aaa.aaa_name = "acpivout"; av.dod = sc->sc_dod[i]; /* * Make sure we don't attach twice if both _BCL and * _DCS methods are found by zeroing the DOD address. */ sc->sc_dod[i] = 0; config_found(self, &av, acpivideo_print); } return (0); } int acpivideo_print(void *aux, const char *pnp) { struct acpi_attach_args *aa = aux; if (pnp) { if (aa->aaa_name) printf("%s at %s", aa->aaa_name, pnp); else return (QUIET); } return (UNCONF); } void acpivideo_get_dod(struct acpivideo_softc * sc) { struct aml_value res; int i; if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_DOD", 0, NULL, &res)) { DPRINTF(("%s: no _DOD\n", DEVNAME(sc))); return; } sc->sc_dod_len = res.length; if (sc->sc_dod_len == 0) { sc->sc_dod = NULL; aml_freevalue(&res); return; } sc->sc_dod = malloc(sc->sc_dod_len * sizeof(int), M_DEVBUF, M_WAITOK|M_ZERO); if (sc->sc_dod == NULL) { aml_freevalue(&res); return; } for (i = 0; i < sc->sc_dod_len; i++) { sc->sc_dod[i] = aml_val2int(res.v_package[i]); DPRINTF(("DOD: %X ", sc->sc_dod[i])); } DPRINTF(("\n")); aml_freevalue(&res); } int acpivideo_getpcibus(struct acpivideo_softc *sc, struct aml_node *node) { /* Check if parent device has PCI mapping */ return (node->parent && node->parent->pci) ? node->parent->pci->sub : -1; }