/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2012-2013 Robert N. M. Watson * All rights reserved. * * This software was developed by SRI International and the University of * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) * ("CTSRD"), as part of the DARPA CRASH research programme. * * 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 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 AUTHOR 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 #include #include #include #include #include /* struct vt_mode */ #include /* video_adapter_t */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fb_if.h" static int terasic_mtl_fdt_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (ofw_bus_is_compatible(dev, "sri-cambridge,mtl")) { device_set_desc(dev, "Terasic Multi-touch LCD (MTL)"); return (BUS_PROBE_DEFAULT); } return (ENXIO); } static int terasic_mtl_fdt_attach(device_t dev) { struct terasic_mtl_softc *sc; int error; sc = device_get_softc(dev); sc->mtl_dev = dev; sc->mtl_unit = device_get_unit(dev); /* * FDT allows multiple memory resources to be defined for a device; * query them in the order registers, pixel buffer, text buffer. * However, we need to sanity-check that they are page-aligned and * page-sized, so we may still abort. */ sc->mtl_reg_rid = 0; sc->mtl_reg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mtl_reg_rid, RF_ACTIVE); if (sc->mtl_reg_res == NULL) { device_printf(dev, "couldn't map register memory\n"); error = ENXIO; goto error; } if (rman_get_start(sc->mtl_reg_res) % PAGE_SIZE != 0) { device_printf(dev, "improper register address\n"); error = ENXIO; goto error; } if (rman_get_size(sc->mtl_reg_res) % PAGE_SIZE != 0) { device_printf(dev, "improper register size\n"); error = ENXIO; goto error; } device_printf(sc->mtl_dev, "registers at mem %p-%p\n", (void *)rman_get_start(sc->mtl_reg_res), (void *)(rman_get_start(sc->mtl_reg_res) + rman_get_size(sc->mtl_reg_res))); sc->mtl_pixel_rid = 1; sc->mtl_pixel_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mtl_pixel_rid, RF_ACTIVE); if (sc->mtl_pixel_res == NULL) { device_printf(dev, "couldn't map pixel memory\n"); error = ENXIO; goto error; } if (rman_get_start(sc->mtl_pixel_res) % PAGE_SIZE != 0) { device_printf(dev, "improper pixel address\n"); error = ENXIO; goto error; } if (rman_get_size(sc->mtl_pixel_res) % PAGE_SIZE != 0) { device_printf(dev, "improper pixel size\n"); error = ENXIO; goto error; } device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n", (void *)rman_get_start(sc->mtl_pixel_res), (void *)(rman_get_start(sc->mtl_pixel_res) + rman_get_size(sc->mtl_pixel_res))); sc->mtl_text_rid = 2; sc->mtl_text_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mtl_text_rid, RF_ACTIVE); if (sc->mtl_text_res == NULL) { device_printf(dev, "couldn't map text memory\n"); error = ENXIO; goto error; } if (rman_get_start(sc->mtl_text_res) % PAGE_SIZE != 0) { device_printf(dev, "improper text address\n"); error = ENXIO; goto error; } if (rman_get_size(sc->mtl_text_res) % PAGE_SIZE != 0) { device_printf(dev, "improper text size\n"); error = ENXIO; goto error; } device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n", (void *)rman_get_start(sc->mtl_text_res), (void *)(rman_get_start(sc->mtl_text_res) + rman_get_size(sc->mtl_text_res))); error = terasic_mtl_attach(sc); if (error == 0) return (0); error: if (sc->mtl_text_res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, sc->mtl_text_res); if (sc->mtl_pixel_res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, sc->mtl_pixel_res); if (sc->mtl_reg_res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, sc->mtl_reg_res); return (error); } static int terasic_mtl_fdt_detach(device_t dev) { struct terasic_mtl_softc *sc; sc = device_get_softc(dev); terasic_mtl_detach(sc); bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, sc->mtl_text_res); bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, sc->mtl_pixel_res); bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, sc->mtl_reg_res); return (0); } static struct fb_info * terasic_mtl_fb_getinfo(device_t dev) { struct terasic_mtl_softc *sc; sc = device_get_softc(dev); return (&sc->mtl_fb_info); } static device_method_t terasic_mtl_fdt_methods[] = { DEVMETHOD(device_probe, terasic_mtl_fdt_probe), DEVMETHOD(device_attach, terasic_mtl_fdt_attach), DEVMETHOD(device_detach, terasic_mtl_fdt_detach), DEVMETHOD(fb_getinfo, terasic_mtl_fb_getinfo), { 0, 0 } }; static driver_t terasic_mtl_fdt_driver = { "terasic_mtl", terasic_mtl_fdt_methods, sizeof(struct terasic_mtl_softc), }; DRIVER_MODULE(mtl, simplebus, terasic_mtl_fdt_driver, terasic_mtl_devclass, 0, 0);