drm_module.c revision 1.2 1 1.2 riastrad /* $NetBSD: drm_module.c,v 1.2 2014/03/18 18:20:42 riastradh Exp $ */
2 1.2 riastrad
3 1.2 riastrad /*-
4 1.2 riastrad * Copyright (c) 2013 The NetBSD Foundation, Inc.
5 1.2 riastrad * All rights reserved.
6 1.2 riastrad *
7 1.2 riastrad * This code is derived from software contributed to The NetBSD Foundation
8 1.2 riastrad * by Taylor R. Campbell.
9 1.2 riastrad *
10 1.2 riastrad * Redistribution and use in source and binary forms, with or without
11 1.2 riastrad * modification, are permitted provided that the following conditions
12 1.2 riastrad * are met:
13 1.2 riastrad * 1. Redistributions of source code must retain the above copyright
14 1.2 riastrad * notice, this list of conditions and the following disclaimer.
15 1.2 riastrad * 2. Redistributions in binary form must reproduce the above copyright
16 1.2 riastrad * notice, this list of conditions and the following disclaimer in the
17 1.2 riastrad * documentation and/or other materials provided with the distribution.
18 1.2 riastrad *
19 1.2 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.2 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.2 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.2 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.2 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.2 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.2 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.2 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.2 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.2 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.2 riastrad * POSSIBILITY OF SUCH DAMAGE.
30 1.2 riastrad */
31 1.2 riastrad
32 1.2 riastrad #include <sys/cdefs.h>
33 1.2 riastrad __KERNEL_RCSID(0, "$NetBSD: drm_module.c,v 1.2 2014/03/18 18:20:42 riastradh Exp $");
34 1.2 riastrad
35 1.2 riastrad #include <sys/types.h>
36 1.2 riastrad #include <sys/device.h>
37 1.2 riastrad #include <sys/module.h>
38 1.2 riastrad #include <sys/systm.h>
39 1.2 riastrad
40 1.2 riastrad #include <drm/drmP.h>
41 1.2 riastrad
42 1.2 riastrad /*
43 1.2 riastrad * XXX I2C stuff should be moved to a separate drmkms_i2c module.
44 1.2 riastrad */
45 1.2 riastrad MODULE(MODULE_CLASS_DRIVER, drmkms, "iic,drmkms_linux");
46 1.2 riastrad
47 1.2 riastrad #ifdef _MODULE
48 1.2 riastrad #include "ioconf.c"
49 1.2 riastrad #endif
50 1.2 riastrad
51 1.2 riastrad #ifndef _MODULE
52 1.2 riastrad /*
53 1.2 riastrad * XXX Mega-kludge. See drm_init in drm_drv.c for details.
54 1.2 riastrad */
55 1.2 riastrad extern int linux_suppress_init;
56 1.2 riastrad #endif
57 1.2 riastrad
58 1.2 riastrad static int
59 1.2 riastrad drmkms_modcmd(modcmd_t cmd, void *arg __unused)
60 1.2 riastrad {
61 1.2 riastrad #ifdef _MODULE
62 1.2 riastrad devmajor_t bmajor = NODEVMAJOR, cmajor = NODEVMAJOR;
63 1.2 riastrad int error;
64 1.2 riastrad #endif
65 1.2 riastrad
66 1.2 riastrad switch (cmd) {
67 1.2 riastrad case MODULE_CMD_INIT:
68 1.2 riastrad #ifndef _MODULE
69 1.2 riastrad if (!linux_suppress_init)
70 1.2 riastrad #endif
71 1.2 riastrad linux_mutex_init(&drm_global_mutex);
72 1.2 riastrad #ifdef _MODULE
73 1.2 riastrad error = config_init_component(cfdriver_ioconf_drmkms,
74 1.2 riastrad cfattach_ioconf_drmkms, cfdata_ioconf_drmkms);
75 1.2 riastrad if (error) {
76 1.2 riastrad aprint_error("drmkms: unable to init component: %d\n",
77 1.2 riastrad error);
78 1.2 riastrad goto init_fail0;
79 1.2 riastrad }
80 1.2 riastrad error = devsw_attach("drm", NULL, &bmajor,
81 1.2 riastrad &drm_cdevsw, &cmajor);
82 1.2 riastrad if (error) {
83 1.2 riastrad aprint_error("drmkms: unable to attach devsw: %d\n",
84 1.2 riastrad error);
85 1.2 riastrad goto init_fail1;
86 1.2 riastrad }
87 1.2 riastrad #endif
88 1.2 riastrad return 0;
89 1.2 riastrad
90 1.2 riastrad #ifdef _MODULE
91 1.2 riastrad init_fail2: __unused
92 1.2 riastrad (void)devsw_detach(NULL, &drm_cdevsw);
93 1.2 riastrad init_fail1: (void)config_fini_component(cfdriver_ioconf_drmkms,
94 1.2 riastrad cfattach_ioconf_drmkms, cfdata_ioconf_drmkms);
95 1.2 riastrad init_fail0: linux_mutex_destroy(&drm_global_mutex);
96 1.2 riastrad return error;
97 1.2 riastrad #endif /* _MODULE */
98 1.2 riastrad
99 1.2 riastrad case MODULE_CMD_FINI:
100 1.2 riastrad #ifdef _MODULE
101 1.2 riastrad error = devsw_detach(NULL, &drm_cdevsw);
102 1.2 riastrad if (error)
103 1.2 riastrad return error;
104 1.2 riastrad error = config_fini_component(cfdriver_ioconf_drmkms,
105 1.2 riastrad cfattach_ioconf_drmkms, cfdata_ioconf_drmkms);
106 1.2 riastrad if (error)
107 1.2 riastrad /* XXX Now what? Reattach the devsw? */
108 1.2 riastrad return error;
109 1.2 riastrad #endif
110 1.2 riastrad linux_mutex_destroy(&drm_global_mutex);
111 1.2 riastrad return 0;
112 1.2 riastrad
113 1.2 riastrad default:
114 1.2 riastrad return ENOTTY;
115 1.2 riastrad }
116 1.2 riastrad }
117