drm_module.c revision 1.7.4.3
1 1.7.4.2 tls /* $NetBSD: drm_module.c,v 1.7.4.3 2017/12/03 11:37:58 jdolecek Exp $ */ 2 1.7.4.2 tls 3 1.7.4.2 tls /*- 4 1.7.4.2 tls * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.7.4.2 tls * All rights reserved. 6 1.7.4.2 tls * 7 1.7.4.2 tls * This code is derived from software contributed to The NetBSD Foundation 8 1.7.4.2 tls * by Taylor R. Campbell. 9 1.7.4.2 tls * 10 1.7.4.2 tls * Redistribution and use in source and binary forms, with or without 11 1.7.4.2 tls * modification, are permitted provided that the following conditions 12 1.7.4.2 tls * are met: 13 1.7.4.2 tls * 1. Redistributions of source code must retain the above copyright 14 1.7.4.2 tls * notice, this list of conditions and the following disclaimer. 15 1.7.4.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.7.4.2 tls * notice, this list of conditions and the following disclaimer in the 17 1.7.4.2 tls * documentation and/or other materials provided with the distribution. 18 1.7.4.2 tls * 19 1.7.4.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.7.4.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.7.4.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.7.4.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.7.4.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.7.4.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.7.4.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.7.4.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.7.4.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.7.4.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.7.4.2 tls * POSSIBILITY OF SUCH DAMAGE. 30 1.7.4.2 tls */ 31 1.7.4.2 tls 32 1.7.4.2 tls #include <sys/cdefs.h> 33 1.7.4.2 tls __KERNEL_RCSID(0, "$NetBSD: drm_module.c,v 1.7.4.3 2017/12/03 11:37:58 jdolecek Exp $"); 34 1.7.4.2 tls 35 1.7.4.2 tls #include <sys/types.h> 36 1.7.4.3 jdolecek #include <sys/conf.h> 37 1.7.4.2 tls #include <sys/device.h> 38 1.7.4.2 tls #include <sys/module.h> 39 1.7.4.2 tls #ifndef _MODULE 40 1.7.4.2 tls #include <sys/once.h> 41 1.7.4.2 tls #endif 42 1.7.4.2 tls #include <sys/reboot.h> 43 1.7.4.2 tls #include <sys/systm.h> 44 1.7.4.2 tls 45 1.7.4.2 tls #include <linux/mutex.h> 46 1.7.4.2 tls 47 1.7.4.2 tls #include <drm/drmP.h> 48 1.7.4.3 jdolecek #include <drm/drm_encoder_slave.h> 49 1.7.4.3 jdolecek #include <drm/drm_sysctl.h> 50 1.7.4.2 tls 51 1.7.4.2 tls /* 52 1.7.4.2 tls * XXX I2C stuff should be moved to a separate drmkms_i2c module. 53 1.7.4.2 tls */ 54 1.7.4.3 jdolecek MODULE(MODULE_CLASS_DRIVER, drmkms, "drmkms_linux"); 55 1.7.4.2 tls 56 1.7.4.2 tls struct mutex drm_global_mutex; 57 1.7.4.2 tls 58 1.7.4.3 jdolecek struct drm_sysctl_def drm_def = DRM_SYSCTL_INIT(); 59 1.7.4.3 jdolecek 60 1.7.4.2 tls static int 61 1.7.4.2 tls drm_init(void) 62 1.7.4.2 tls { 63 1.7.4.2 tls extern int linux_guarantee_initialized(void); 64 1.7.4.2 tls int error; 65 1.7.4.2 tls 66 1.7.4.2 tls error = linux_guarantee_initialized(); 67 1.7.4.2 tls if (error) 68 1.7.4.2 tls return error; 69 1.7.4.2 tls 70 1.7.4.2 tls if (ISSET(boothowto, AB_DEBUG)) 71 1.7.4.2 tls drm_debug = ~(unsigned int)0; 72 1.7.4.2 tls 73 1.7.4.2 tls spin_lock_init(&drm_minor_lock); 74 1.7.4.2 tls idr_init(&drm_minors_idr); 75 1.7.4.2 tls linux_mutex_init(&drm_global_mutex); 76 1.7.4.2 tls drm_connector_ida_init(); 77 1.7.4.2 tls drm_global_init(); 78 1.7.4.3 jdolecek drm_sysctl_init(&drm_def); 79 1.7.4.3 jdolecek drm_i2c_encoders_init(); 80 1.7.4.2 tls 81 1.7.4.2 tls return 0; 82 1.7.4.2 tls } 83 1.7.4.2 tls 84 1.7.4.2 tls int drm_guarantee_initialized(void); /* XXX */ 85 1.7.4.2 tls int 86 1.7.4.2 tls drm_guarantee_initialized(void) 87 1.7.4.2 tls { 88 1.7.4.2 tls #ifdef _MODULE 89 1.7.4.2 tls return 0; 90 1.7.4.2 tls #else 91 1.7.4.2 tls static ONCE_DECL(drm_init_once); 92 1.7.4.2 tls 93 1.7.4.2 tls return RUN_ONCE(&drm_init_once, &drm_init); 94 1.7.4.2 tls #endif 95 1.7.4.2 tls } 96 1.7.4.2 tls 97 1.7.4.2 tls static void 98 1.7.4.2 tls drm_fini(void) 99 1.7.4.2 tls { 100 1.7.4.2 tls 101 1.7.4.3 jdolecek drm_i2c_encoders_fini(); 102 1.7.4.3 jdolecek drm_sysctl_fini(&drm_def); 103 1.7.4.2 tls drm_global_release(); 104 1.7.4.2 tls drm_connector_ida_destroy(); 105 1.7.4.2 tls linux_mutex_destroy(&drm_global_mutex); 106 1.7.4.2 tls idr_destroy(&drm_minors_idr); 107 1.7.4.2 tls spin_lock_destroy(&drm_minor_lock); 108 1.7.4.2 tls } 109 1.7.4.2 tls 110 1.7.4.2 tls static int 111 1.7.4.2 tls drmkms_modcmd(modcmd_t cmd, void *arg __unused) 112 1.7.4.2 tls { 113 1.7.4.2 tls #ifdef _MODULE 114 1.7.4.2 tls devmajor_t bmajor = NODEVMAJOR, cmajor = NODEVMAJOR; 115 1.7.4.2 tls #endif 116 1.7.4.2 tls int error; 117 1.7.4.2 tls 118 1.7.4.2 tls switch (cmd) { 119 1.7.4.2 tls case MODULE_CMD_INIT: 120 1.7.4.2 tls #ifdef _MODULE 121 1.7.4.2 tls error = drm_init(); 122 1.7.4.2 tls #else 123 1.7.4.2 tls error = drm_guarantee_initialized(); 124 1.7.4.2 tls #endif 125 1.7.4.2 tls if (error) 126 1.7.4.2 tls return error; 127 1.7.4.2 tls #ifdef _MODULE 128 1.7.4.2 tls error = devsw_attach("drm", NULL, &bmajor, 129 1.7.4.2 tls &drm_cdevsw, &cmajor); 130 1.7.4.2 tls if (error) { 131 1.7.4.2 tls aprint_error("drmkms: unable to attach devsw: %d\n", 132 1.7.4.2 tls error); 133 1.7.4.2 tls return error; 134 1.7.4.2 tls } 135 1.7.4.2 tls #endif 136 1.7.4.2 tls return 0; 137 1.7.4.2 tls 138 1.7.4.2 tls case MODULE_CMD_FINI: 139 1.7.4.2 tls #ifdef _MODULE 140 1.7.4.2 tls error = devsw_detach(NULL, &drm_cdevsw); 141 1.7.4.2 tls if (error) 142 1.7.4.2 tls return error; 143 1.7.4.2 tls #endif 144 1.7.4.2 tls drm_fini(); 145 1.7.4.2 tls return 0; 146 1.7.4.2 tls 147 1.7.4.2 tls default: 148 1.7.4.2 tls return ENOTTY; 149 1.7.4.2 tls } 150 1.7.4.2 tls } 151
Indexes created Thu Oct 02 14:10:14 GMT 2025