1/*- 2 * Copyright (c) 2012 Robert N. M. Watson 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: releng/11.0/sys/dev/terasic/mtl/terasic_mtl.c 274823 2014-11-21 21:34:19Z brooks $"); 33 34#include "opt_syscons.h" 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/endian.h> 42#include <sys/fbio.h> /* video_adapter_t */ 43#include <sys/kernel.h> 44#include <sys/lock.h> 45#include <sys/malloc.h> 46#include <sys/module.h> 47#include <sys/mutex.h> 48#include <sys/rman.h> 49#include <sys/systm.h> 50 51#include <machine/bus.h> 52#include <machine/resource.h> 53 54#include <dev/terasic/mtl/terasic_mtl.h> 55 56/* 57 * Device driver for the Terasic Multitouch LCD (MTL). Three separate 58 * sub-drivers that support, respectively, access to device control registers, 59 * the pixel frame buffer, and the text frame buffer. The pixel frame buffer 60 * is hooked up to vt(4), and the text frame buffer to syscons(4). 61 * 62 * Eventually, the frame buffer control registers and touch screen input FIFO 63 * will end up being separate sub-drivers as well. 64 * 65 * Note: sub-driver detach routines must check whether or not they have 66 * attached as they may be called even if the attach routine hasn't been, on 67 * an error. 68 */ 69 70devclass_t terasic_mtl_devclass; 71 72int 73terasic_mtl_attach(struct terasic_mtl_softc *sc) 74{ 75 int error; 76 77 error = terasic_mtl_reg_attach(sc); 78 if (error) 79 goto error; 80 error = terasic_mtl_pixel_attach(sc); 81 if (error) 82 goto error; 83 error = terasic_mtl_text_attach(sc); 84 if (error) 85 goto error; 86 /* 87 * XXXRW: Once we've attached syscons or vt, we can't detach it, so do 88 * it last. 89 */ 90#if defined(DEV_VT) 91 terasic_mtl_reg_pixel_endian_set(sc, BYTE_ORDER == BIG_ENDIAN); 92 error = terasic_mtl_fbd_attach(sc); 93 if (error) 94 goto error; 95 terasic_mtl_blend_pixel_set(sc, TERASIC_MTL_ALPHA_OPAQUE); 96 terasic_mtl_blend_textfg_set(sc, TERASIC_MTL_ALPHA_TRANSPARENT); 97 terasic_mtl_blend_textbg_set(sc, TERASIC_MTL_ALPHA_TRANSPARENT); 98#endif 99#if defined(DEV_SC) 100 error = terasic_mtl_syscons_attach(sc); 101 if (error) 102 goto error; 103 terasic_mtl_blend_pixel_set(sc, TERASIC_MTL_ALPHA_TRANSPARENT); 104 terasic_mtl_blend_textfg_set(sc, TERASIC_MTL_ALPHA_OPAQUE); 105 terasic_mtl_blend_textbg_set(sc, TERASIC_MTL_ALPHA_OPAQUE); 106#endif 107 terasic_mtl_blend_default_set(sc, TERASIC_MTL_COLOR_BLACK); 108 return (0); 109error: 110 terasic_mtl_text_detach(sc); 111 terasic_mtl_pixel_detach(sc); 112 terasic_mtl_reg_detach(sc); 113 return (error); 114} 115 116void 117terasic_mtl_detach(struct terasic_mtl_softc *sc) 118{ 119 120 /* XXXRW: syscons and vt can't detach, but try anyway, only to panic. */ 121#if defined(DEV_SC) 122 terasic_mtl_syscons_detach(sc); 123#endif 124#if defined(DEV_VT) 125 terasic_mtl_fbd_detach(sc); 126#endif 127 128 /* All other aspects of the driver can detach just fine. */ 129 terasic_mtl_text_detach(sc); 130 terasic_mtl_pixel_detach(sc); 131 terasic_mtl_reg_detach(sc); 132} 133