terasic_mtl_fdt.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012-2013 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * This software was developed by SRI International and the University of 8 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 9 * ("CTSRD"), as part of the DARPA CRASH research programme. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: stable/11/sys/dev/terasic/mtl/terasic_mtl_fdt.c 330897 2018-03-14 03:19:51Z eadler $"); 35 36#include <sys/param.h> 37#include <sys/bus.h> 38#include <sys/condvar.h> 39#include <sys/conf.h> 40#include <sys/consio.h> /* struct vt_mode */ 41#include <sys/fbio.h> /* video_adapter_t */ 42#include <sys/kernel.h> 43#include <sys/lock.h> 44#include <sys/malloc.h> 45#include <sys/module.h> 46#include <sys/mutex.h> 47#include <sys/rman.h> 48#include <sys/systm.h> 49 50#include <machine/bus.h> 51#include <machine/resource.h> 52 53#include <dev/fdt/fdt_common.h> 54#include <dev/ofw/openfirm.h> 55#include <dev/ofw/ofw_bus.h> 56#include <dev/ofw/ofw_bus_subr.h> 57 58#include <dev/terasic/mtl/terasic_mtl.h> 59 60#include "fb_if.h" 61 62static int 63terasic_mtl_fdt_probe(device_t dev) 64{ 65 66 if (!ofw_bus_status_okay(dev)) 67 return (ENXIO); 68 69 if (ofw_bus_is_compatible(dev, "sri-cambridge,mtl")) { 70 device_set_desc(dev, "Terasic Multi-touch LCD (MTL)"); 71 return (BUS_PROBE_DEFAULT); 72 } 73 return (ENXIO); 74} 75 76static int 77terasic_mtl_fdt_attach(device_t dev) 78{ 79 struct terasic_mtl_softc *sc; 80 int error; 81 82 sc = device_get_softc(dev); 83 sc->mtl_dev = dev; 84 sc->mtl_unit = device_get_unit(dev); 85 86 /* 87 * FDT allows multiple memory resources to be defined for a device; 88 * query them in the order registers, pixel buffer, text buffer. 89 * However, we need to sanity-check that they are page-aligned and 90 * page-sized, so we may still abort. 91 */ 92 sc->mtl_reg_rid = 0; 93 sc->mtl_reg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 94 &sc->mtl_reg_rid, RF_ACTIVE); 95 if (sc->mtl_reg_res == NULL) { 96 device_printf(dev, "couldn't map register memory\n"); 97 error = ENXIO; 98 goto error; 99 } 100 if (rman_get_start(sc->mtl_reg_res) % PAGE_SIZE != 0) { 101 device_printf(dev, "improper register address\n"); 102 error = ENXIO; 103 goto error; 104 } 105 if (rman_get_size(sc->mtl_reg_res) % PAGE_SIZE != 0) { 106 device_printf(dev, "improper register size\n"); 107 error = ENXIO; 108 goto error; 109 } 110 device_printf(sc->mtl_dev, "registers at mem %p-%p\n", 111 (void *)rman_get_start(sc->mtl_reg_res), 112 (void *)(rman_get_start(sc->mtl_reg_res) + 113 rman_get_size(sc->mtl_reg_res))); 114 115 sc->mtl_pixel_rid = 1; 116 sc->mtl_pixel_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 117 &sc->mtl_pixel_rid, RF_ACTIVE); 118 if (sc->mtl_pixel_res == NULL) { 119 device_printf(dev, "couldn't map pixel memory\n"); 120 error = ENXIO; 121 goto error; 122 } 123 if (rman_get_start(sc->mtl_pixel_res) % PAGE_SIZE != 0) { 124 device_printf(dev, "improper pixel address\n"); 125 error = ENXIO; 126 goto error; 127 } 128 if (rman_get_size(sc->mtl_pixel_res) % PAGE_SIZE != 0) { 129 device_printf(dev, "improper pixel size\n"); 130 error = ENXIO; 131 goto error; 132 } 133 device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n", 134 (void *)rman_get_start(sc->mtl_pixel_res), 135 (void *)(rman_get_start(sc->mtl_pixel_res) + 136 rman_get_size(sc->mtl_pixel_res))); 137 138 sc->mtl_text_rid = 2; 139 sc->mtl_text_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 140 &sc->mtl_text_rid, RF_ACTIVE); 141 if (sc->mtl_text_res == NULL) { 142 device_printf(dev, "couldn't map text memory\n"); 143 error = ENXIO; 144 goto error; 145 } 146 if (rman_get_start(sc->mtl_text_res) % PAGE_SIZE != 0) { 147 device_printf(dev, "improper text address\n"); 148 error = ENXIO; 149 goto error; 150 } 151 if (rman_get_size(sc->mtl_text_res) % PAGE_SIZE != 0) { 152 device_printf(dev, "improper text size\n"); 153 error = ENXIO; 154 goto error; 155 } 156 device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n", 157 (void *)rman_get_start(sc->mtl_text_res), 158 (void *)(rman_get_start(sc->mtl_text_res) + 159 rman_get_size(sc->mtl_text_res))); 160 161 error = terasic_mtl_attach(sc); 162 if (error == 0) 163 return (0); 164error: 165 if (sc->mtl_text_res != NULL) 166 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, 167 sc->mtl_text_res); 168 if (sc->mtl_pixel_res != NULL) 169 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, 170 sc->mtl_pixel_res); 171 if (sc->mtl_reg_res != NULL) 172 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, 173 sc->mtl_reg_res); 174 return (error); 175} 176 177static int 178terasic_mtl_fdt_detach(device_t dev) 179{ 180 struct terasic_mtl_softc *sc; 181 182 sc = device_get_softc(dev); 183 terasic_mtl_detach(sc); 184 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, 185 sc->mtl_text_res); 186 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, 187 sc->mtl_pixel_res); 188 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, 189 sc->mtl_reg_res); 190 return (0); 191} 192 193static struct fb_info * 194terasic_mtl_fb_getinfo(device_t dev) 195{ 196 struct terasic_mtl_softc *sc; 197 198 sc = device_get_softc(dev); 199 return (&sc->mtl_fb_info); 200} 201 202static device_method_t terasic_mtl_fdt_methods[] = { 203 DEVMETHOD(device_probe, terasic_mtl_fdt_probe), 204 DEVMETHOD(device_attach, terasic_mtl_fdt_attach), 205 DEVMETHOD(device_detach, terasic_mtl_fdt_detach), 206 DEVMETHOD(fb_getinfo, terasic_mtl_fb_getinfo), 207 { 0, 0 } 208}; 209 210static driver_t terasic_mtl_fdt_driver = { 211 "terasic_mtl", 212 terasic_mtl_fdt_methods, 213 sizeof(struct terasic_mtl_softc), 214}; 215 216DRIVER_MODULE(mtl, simplebus, terasic_mtl_fdt_driver, terasic_mtl_devclass, 0, 217 0); 218