130 lines
4.0 KiB
C
130 lines
4.0 KiB
C
/* $NetBSD: connector_fdt.c,v 1.1 2018/04/03 12:40:20 bouyer Exp $ */
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/*-
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* Copyright (c) 2018 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Manuel Bouyer.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* connector driver.
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* specified in linux/Documentation/devicetree/bindings/display/connector/
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* basically it only register its endpoint.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(1, "$NetBSD: connector_fdt.c,v 1.1 2018/04/03 12:40:20 bouyer Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <sys/kmem.h>
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#include <dev/fdt/fdtvar.h>
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#include <dev/fdt/fdt_port.h>
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#include <dev/fdt/connector_fdt.h>
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static int fdt_connector_match(device_t, cfdata_t, void *);
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static void fdt_connector_attach(device_t, device_t, void *);
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static void *fdt_connector_get_data(device_t, struct fdt_endpoint *);
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SLIST_HEAD(, fdt_connector_softc) fdt_connectors =
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SLIST_HEAD_INITIALIZER(&fdt_connectors);
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struct fdt_connector_softc {
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device_t sc_dev;
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int sc_phandle;
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struct fdt_connector sc_con;
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SLIST_ENTRY(fdt_connector_softc) sc_list;
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struct fdt_device_ports sc_ports;
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};
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#define sc_type sc_con.con_type
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CFATTACH_DECL_NEW(fdt_connector, sizeof(struct fdt_connector_softc),
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fdt_connector_match, fdt_connector_attach, NULL, NULL);
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static const struct of_compat_data compat_data[] = {
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{"composite-video-connector", CON_TV},
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{"dvi-connector", CON_DVI},
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{"hdmi-connector", CON_HDMI},
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{"vga-connector", CON_VGA},
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{ NULL }
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};
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static int
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fdt_connector_match(device_t parent, cfdata_t cf, void *aux)
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{
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const struct fdt_attach_args *faa = aux;
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return of_match_compat_data(faa->faa_phandle, compat_data);
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}
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static void
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fdt_connector_attach(device_t parent, device_t self, void *aux)
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{
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struct fdt_connector_softc *sc = device_private(self);
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const struct fdt_attach_args * const faa = aux;
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const int phandle = faa->faa_phandle;
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sc->sc_dev = self;
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sc->sc_phandle = phandle;
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sc->sc_type = of_search_compatible(phandle, compat_data)->data;
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SLIST_INSERT_HEAD(&fdt_connectors, sc, sc_list);
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aprint_naive("\n");
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switch(sc->sc_type) {
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case CON_VGA:
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aprint_normal(": VGA");
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break;
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case CON_DVI:
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aprint_normal(": DVI");
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break;
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case CON_HDMI:
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aprint_normal(": HDMI");
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break;
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case CON_TV:
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aprint_normal(": composite");
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break;
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default:
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panic("unknown connector type %d\n", sc->sc_type);
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}
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aprint_normal(" connector\n");
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sc->sc_ports.dp_ep_get_data = fdt_connector_get_data;
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fdt_ports_register(&sc->sc_ports, self, phandle, EP_CONNECTOR);
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}
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static void *
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fdt_connector_get_data(device_t dev, struct fdt_endpoint *ep)
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{
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struct fdt_connector_softc *sc = device_private(dev);
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return &sc->sc_con;
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}
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