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
nvkm_firmware_get(struct nvkm_device * device,const char * fwname,const struct firmware ** fw)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
nvkm_firmware_put(const struct firmware * fw)59 nvkm_firmware_put(const struct firmware *fw)
60 {
61 release_firmware(fw);
62 }
63
