1 /*
2 * Copyright (c) 2015 Michael Neumann
3 * Copyright (c) 2016 François Tigeot
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
11 * disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifndef _LINUX_FIRMWARE_H_
29 #define _LINUX_FIRMWARE_H_
30
31 #include <sys/bus.h>
32 #include <sys/firmware.h>
33 #include <linux/types.h>
34 #include <linux/compiler.h>
35 #include <linux/gfp.h>
36 #include <linux/device.h>
37
38 static inline int
request_firmware(const struct firmware ** fw,const char * name,__unused struct device * dev)39 request_firmware(const struct firmware **fw, const char *name, __unused struct device *dev) {
40 *fw = firmware_get(name);
41 if (*fw) {
42 return 0;
43 }
44 return -ENOENT;
45 }
46
47 static inline int
request_firmware_nowait(struct module * module,bool uevent,const char * name,struct device * device,gfp_t gfp,void * context,void (* cont)(const struct firmware * fw,void * context))48 request_firmware_nowait(struct module *module, bool uevent,
49 const char *name, struct device *device, gfp_t gfp, void *context,
50 void (*cont)(const struct firmware *fw, void *context))
51 {
52 const struct firmware *fw;
53
54 fw = firmware_get(name);
55 if (fw == NULL) {
56 return -ENOENT;
57 }
58
59 cont(fw, context);
60
61 return 0;
62 }
63
64 static inline void
release_firmware(const struct firmware * fw)65 release_firmware(const struct firmware *fw) {
66 if (fw != NULL) {
67 firmware_put(fw, FIRMWARE_UNLOAD);
68 }
69 }
70
71 #endif /* _LINUX_FIRMWARE_H_ */
72