diff --git a/sys/dev/fdt/fdt_panel.c b/sys/dev/fdt/fdt_panel.c new file mode 100644 index 000000000000..7d86842cfb5c --- /dev/null +++ b/sys/dev/fdt/fdt_panel.c @@ -0,0 +1,163 @@ +/* $NetBSD: fdt_panel.c,v 1.1 2019/12/19 00:35:01 jakllsch Exp $ */ + +/*- + * Copyright (c) 2019 Jonathan A. Kollasch + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 +__KERNEL_RCSID(0, "$NetBSD: fdt_panel.c,v 1.1 2019/12/19 00:35:01 jakllsch Exp $"); + +#include +#include +#include +#include +#include + +#include +#include + +#include + +#include +#include +#include + +static const char * const compatible[] = { + "simple-panel", + NULL +}; + +struct panel_fdt_softc { + device_t sc_dev; + struct fdt_device_ports sc_ports; + struct drm_panel sc_panel; + struct fdtbus_gpio_pin * sc_enable; + struct fdtbus_regulator * sc_regulator; +}; + +#define to_panel_fdt(x) container_of(x, struct panel_fdt_softc, sc_panel) + +static int +panel_fdt_enable(struct drm_panel * panel) +{ + struct panel_fdt_softc * const sc = to_panel_fdt(panel); + + if (sc->sc_enable) { + fdtbus_gpio_write(sc->sc_enable, true); + } + + if (!cold) + kpause("panele", false, mstohz(200), NULL); + + return 0; +} + +static int +panel_fdt_prepare(struct drm_panel * panel) +{ + struct panel_fdt_softc * const sc = to_panel_fdt(panel); + + if (sc->sc_regulator) { + fdtbus_regulator_enable(sc->sc_regulator); + } + + if (cold) + delay(210000); + else + kpause("panelp", false, mstohz(210), NULL); + + return 0; +} + +static const struct drm_panel_funcs panel_fdt_funcs = { + .disable = NULL, + .enable = panel_fdt_enable, + .get_modes = NULL, + .get_timings = NULL, + .prepare = panel_fdt_prepare, + .unprepare = NULL, +}; + +static int +panel_fdt_ep_activate(device_t dev, struct fdt_endpoint *ep, bool activate) +{ + struct fdt_endpoint *rep = fdt_endpoint_remote(ep); + + if (fdt_endpoint_port_index(ep) != 0) + return EINVAL; + + if (fdt_endpoint_type(rep) != EP_DRM_ENCODER) + return EINVAL; + + return 0; +} + +static void * +panel_fdt_ep_get_data(device_t dev, struct fdt_endpoint *ep) +{ + struct panel_fdt_softc * const sc = device_private(dev); + + return &sc->sc_panel; +} + +static int +panel_fdt_match(device_t parent, cfdata_t cf, void *aux) +{ + struct fdt_attach_args * const faa = aux; + + return of_match_compatible(faa->faa_phandle, compatible); +} + +static void +panel_fdt_attach(device_t parent, device_t self, void *aux) +{ + struct panel_fdt_softc * const sc = device_private(self); + struct fdt_attach_args * const faa = aux; + const int phandle = faa->faa_phandle; + + aprint_naive("\n"); + aprint_normal(": panel\n"); + + sc->sc_dev = self; + + /* required for "simple-panel" */ + sc->sc_regulator = fdtbus_regulator_acquire(phandle, "power-supply"); + + /* optional for "simple-panel" */ + sc->sc_enable = fdtbus_gpio_acquire_index(phandle, + "enable-gpios", 0, GPIO_PIN_OUTPUT); + + sc->sc_ports.dp_ep_activate = panel_fdt_ep_activate; + sc->sc_ports.dp_ep_get_data = panel_fdt_ep_get_data; + fdt_ports_register(&sc->sc_ports, self, phandle, EP_DRM_PANEL); + + drm_panel_init(&sc->sc_panel); + sc->sc_panel.funcs = &panel_fdt_funcs; + + drm_panel_add(&sc->sc_panel); +} + +CFATTACH_DECL_NEW(panel_fdt, sizeof(struct panel_fdt_softc), + panel_fdt_match, panel_fdt_attach, NULL, NULL); diff --git a/sys/dev/fdt/files.fdt b/sys/dev/fdt/files.fdt index 3bf82310b4d5..02ab0a3c510a 100644 --- a/sys/dev/fdt/files.fdt +++ b/sys/dev/fdt/files.fdt @@ -1,4 +1,4 @@ -# $NetBSD: files.fdt,v 1.48 2019/11/17 19:30:42 jmcneill Exp $ +# $NetBSD: files.fdt,v 1.49 2019/12/19 00:35:01 jakllsch Exp $ include "external/bsd/libfdt/conf/files.libfdt" @@ -45,6 +45,9 @@ device panel: fdt_port attach panel at fdt with fdt_panel file dev/fdt/panel_fdt.c fdt_panel +attach panel at fdt with panel_fdt: drmkms +file dev/fdt/fdt_panel.c panel_fdt + device dispcon: fdt_port, drmkms, ddc_read_edid attach dispcon at fdt with dispcon_hdmi file dev/fdt/hdmi_connector.c dispcon_hdmi