1/*- 2 * Copyright (c) 2014 Ed Maste 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD$"); 33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/fbio.h> 37#include <sys/kernel.h> 38#include <sys/module.h> 39#include <sys/rman.h> 40 41#include <dev/fdt/fdt_common.h> 42#include <dev/ofw/ofw_bus.h> 43#include <dev/ofw/ofw_bus_subr.h> 44 45#include <dev/terasic/mtl/terasic_mtl.h> 46 47#include <dev/vt/colors/vt_termcolors.h> 48 49/* 50 * Terasic Multitouch LCD (MTL) vt(4) framebuffer driver. 51 */ 52 53#include <vm/vm.h> 54#include <vm/pmap.h> 55 56static int 57terasic_mtl_fbd_panel_info(struct terasic_mtl_softc *sc, struct fb_info *info) 58{ 59 phandle_t node; 60 pcell_t dts_value[2]; 61 int len; 62 63 if ((node = ofw_bus_get_node(sc->mtl_dev)) == -1) 64 return (ENXIO); 65 66 /* panel size */ 67 if ((len = OF_getproplen(node, "panel-size")) != sizeof(dts_value)) 68 return (ENXIO); 69 OF_getencprop(node, "panel-size", dts_value, len); 70 info->fb_width = dts_value[0]; 71 info->fb_height = dts_value[1]; 72 info->fb_bpp = info->fb_depth = 32; 73 info->fb_stride = info->fb_width * (info->fb_depth / 8); 74 75 /* 76 * Safety belt to ensure framebuffer params are as expected. May be 77 * removed when we have full confidence in fdt / hints params. 78 */ 79 if (info->fb_width != TERASIC_MTL_FB_WIDTH || 80 info->fb_height != TERASIC_MTL_FB_HEIGHT || 81 info->fb_stride != 3200 || 82 info->fb_bpp != 32 || info->fb_depth != 32) { 83 device_printf(sc->mtl_dev, 84 "rejecting invalid panel params width=%u height=%u\n", 85 (unsigned)info->fb_width, (unsigned)info->fb_height); 86 return (EINVAL); 87 } 88 89 return (0); 90} 91 92int 93terasic_mtl_fbd_attach(struct terasic_mtl_softc *sc) 94{ 95 struct fb_info *info; 96 device_t fbd; 97 98 info = &sc->mtl_fb_info; 99 info->fb_name = device_get_nameunit(sc->mtl_dev); 100 info->fb_pbase = rman_get_start(sc->mtl_pixel_res); 101 info->fb_size = rman_get_size(sc->mtl_pixel_res); 102 info->fb_vbase = (intptr_t)pmap_mapdev(info->fb_pbase, info->fb_size); 103 if (terasic_mtl_fbd_panel_info(sc, info) != 0) { 104 device_printf(sc->mtl_dev, "using default panel params\n"); 105 info->fb_bpp = info->fb_depth = 32; 106 info->fb_width = 800; 107 info->fb_height = 480; 108 info->fb_stride = info->fb_width * (info->fb_depth / 8); 109 } 110 111 fbd = device_add_child(sc->mtl_dev, "fbd", 112 device_get_unit(sc->mtl_dev)); 113 if (fbd == NULL) { 114 device_printf(sc->mtl_dev, "Failed to attach fbd child\n"); 115 return (ENXIO); 116 } 117 if (device_probe_and_attach(fbd) != 0) { 118 device_printf(sc->mtl_dev, 119 "Failed to attach fbd device\n"); 120 return (ENXIO); 121 } 122 return (0); 123} 124 125void 126terasic_mtl_fbd_detach(struct terasic_mtl_softc *sc) 127{ 128 panic("%s: detach not implemented", __func__); 129} 130 131extern device_t fbd_driver; 132extern devclass_t fbd_devclass; 133DRIVER_MODULE(fbd, terasic_mtl, fbd_driver, fbd_devclass, 0, 0); 134