1 /*
2  * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20  * DEALINGS IN THE SOFTWARE.
21  */
22 #include <core/device.h>
23 #include <core/firmware.h>
24 
25 /**
26  * nvkm_firmware_get - load firmware from the official nvidia/chip/ directory
27  * @device	device that will use that firmware
28  * @fwname	name of firmware file to load
29  * @fw		firmware structure to load to
30  *
31  * Use this function to load firmware files in the form nvidia/chip/fwname.bin.
32  * Firmware files released by NVIDIA will always follow this format.
33  */
34 int
35 nvkm_firmware_get(struct nvkm_device *device, const char *fwname,
36 		  const struct firmware **fw)
37 {
38 	char f[64];
39 	char cname[16];
40 	int i;
41 
42 	/* Convert device name to lowercase */
43 	strncpy(cname, device->chip->name, sizeof(cname));
44 	cname[sizeof(cname) - 1] = '\0';
45 	i = strlen(cname);
46 	while (i) {
47 		--i;
48 		cname[i] = tolower(cname[i]);
49 	}
50 
51 	snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname);
52 	return request_firmware(fw, f, device->dev);
53 }
54 
55 /**
56  * nvkm_firmware_put - release firmware loaded with nvkm_firmware_get
57  */
58 void
59 nvkm_firmware_put(const struct firmware *fw)
60 {
61 	release_firmware(fw);
62 }
63