drm_module.c revision 1.5.6.2
1 1.5.6.2 yamt /* $NetBSD: drm_module.c,v 1.5.6.2 2014/05/22 11:40:55 yamt Exp $ */ 2 1.5.6.2 yamt 3 1.5.6.2 yamt /*- 4 1.5.6.2 yamt * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.5.6.2 yamt * All rights reserved. 6 1.5.6.2 yamt * 7 1.5.6.2 yamt * This code is derived from software contributed to The NetBSD Foundation 8 1.5.6.2 yamt * by Taylor R. Campbell. 9 1.5.6.2 yamt * 10 1.5.6.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.5.6.2 yamt * modification, are permitted provided that the following conditions 12 1.5.6.2 yamt * are met: 13 1.5.6.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.5.6.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.5.6.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.5.6.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.5.6.2 yamt * documentation and/or other materials provided with the distribution. 18 1.5.6.2 yamt * 19 1.5.6.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.5.6.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.5.6.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.5.6.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.5.6.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.5.6.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.5.6.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.5.6.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.5.6.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.5.6.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.5.6.2 yamt * POSSIBILITY OF SUCH DAMAGE. 30 1.5.6.2 yamt */ 31 1.5.6.2 yamt 32 1.5.6.2 yamt #include <sys/cdefs.h> 33 1.5.6.2 yamt __KERNEL_RCSID(0, "$NetBSD: drm_module.c,v 1.5.6.2 2014/05/22 11:40:55 yamt Exp $"); 34 1.5.6.2 yamt 35 1.5.6.2 yamt #include <sys/types.h> 36 1.5.6.2 yamt #include <sys/device.h> 37 1.5.6.2 yamt #include <sys/module.h> 38 1.5.6.2 yamt #include <sys/reboot.h> 39 1.5.6.2 yamt #include <sys/systm.h> 40 1.5.6.2 yamt 41 1.5.6.2 yamt #include <drm/drmP.h> 42 1.5.6.2 yamt 43 1.5.6.2 yamt /* 44 1.5.6.2 yamt * XXX I2C stuff should be moved to a separate drmkms_i2c module. 45 1.5.6.2 yamt */ 46 1.5.6.2 yamt MODULE(MODULE_CLASS_DRIVER, drmkms, "iic,drmkms_linux"); 47 1.5.6.2 yamt 48 1.5.6.2 yamt #ifdef _MODULE 49 1.5.6.2 yamt #include "ioconf.c" 50 1.5.6.2 yamt #endif 51 1.5.6.2 yamt 52 1.5.6.2 yamt /* 53 1.5.6.2 yamt * XXX Mega-kludge. See drm_init in drm_drv.c for details. 54 1.5.6.2 yamt */ 55 1.5.6.2 yamt #ifdef _MODULE 56 1.5.6.2 yamt static const int linux_suppress_init = 1; 57 1.5.6.2 yamt #else 58 1.5.6.2 yamt extern int linux_suppress_init; 59 1.5.6.2 yamt #endif 60 1.5.6.2 yamt 61 1.5.6.2 yamt static int 62 1.5.6.2 yamt drmkms_modcmd(modcmd_t cmd, void *arg __unused) 63 1.5.6.2 yamt { 64 1.5.6.2 yamt #ifdef _MODULE 65 1.5.6.2 yamt devmajor_t bmajor = NODEVMAJOR, cmajor = NODEVMAJOR; 66 1.5.6.2 yamt int error; 67 1.5.6.2 yamt #endif 68 1.5.6.2 yamt 69 1.5.6.2 yamt switch (cmd) { 70 1.5.6.2 yamt case MODULE_CMD_INIT: 71 1.5.6.2 yamt if (!linux_suppress_init) { 72 1.5.6.2 yamt linux_mutex_init(&drm_global_mutex); 73 1.5.6.2 yamt if (ISSET(boothowto, AB_DEBUG)) 74 1.5.6.2 yamt drm_debug = ~(unsigned int)0; 75 1.5.6.2 yamt } 76 1.5.6.2 yamt #ifdef _MODULE 77 1.5.6.2 yamt error = config_init_component(cfdriver_ioconf_drmkms, 78 1.5.6.2 yamt cfattach_ioconf_drmkms, cfdata_ioconf_drmkms); 79 1.5.6.2 yamt if (error) { 80 1.5.6.2 yamt aprint_error("drmkms: unable to init component: %d\n", 81 1.5.6.2 yamt error); 82 1.5.6.2 yamt goto init_fail0; 83 1.5.6.2 yamt } 84 1.5.6.2 yamt error = devsw_attach("drm", NULL, &bmajor, 85 1.5.6.2 yamt &drm_cdevsw, &cmajor); 86 1.5.6.2 yamt if (error) { 87 1.5.6.2 yamt aprint_error("drmkms: unable to attach devsw: %d\n", 88 1.5.6.2 yamt error); 89 1.5.6.2 yamt goto init_fail1; 90 1.5.6.2 yamt } 91 1.5.6.2 yamt #endif 92 1.5.6.2 yamt return 0; 93 1.5.6.2 yamt 94 1.5.6.2 yamt #ifdef _MODULE 95 1.5.6.2 yamt init_fail2: __unused 96 1.5.6.2 yamt (void)devsw_detach(NULL, &drm_cdevsw); 97 1.5.6.2 yamt init_fail1: (void)config_fini_component(cfdriver_ioconf_drmkms, 98 1.5.6.2 yamt cfattach_ioconf_drmkms, cfdata_ioconf_drmkms); 99 1.5.6.2 yamt init_fail0: linux_mutex_destroy(&drm_global_mutex); 100 1.5.6.2 yamt return error; 101 1.5.6.2 yamt #endif /* _MODULE */ 102 1.5.6.2 yamt 103 1.5.6.2 yamt case MODULE_CMD_FINI: 104 1.5.6.2 yamt #ifdef _MODULE 105 1.5.6.2 yamt error = devsw_detach(NULL, &drm_cdevsw); 106 1.5.6.2 yamt if (error) 107 1.5.6.2 yamt return error; 108 1.5.6.2 yamt error = config_fini_component(cfdriver_ioconf_drmkms, 109 1.5.6.2 yamt cfattach_ioconf_drmkms, cfdata_ioconf_drmkms); 110 1.5.6.2 yamt if (error) 111 1.5.6.2 yamt /* XXX Now what? Reattach the devsw? */ 112 1.5.6.2 yamt return error; 113 1.5.6.2 yamt #endif 114 1.5.6.2 yamt linux_mutex_destroy(&drm_global_mutex); 115 1.5.6.2 yamt return 0; 116 1.5.6.2 yamt 117 1.5.6.2 yamt default: 118 1.5.6.2 yamt return ENOTTY; 119 1.5.6.2 yamt } 120 1.5.6.2 yamt } 121
Indexes created Thu Oct 02 14:10:14 GMT 2025