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brcmfmac: Set board_type from DMI on x86 based machines
[linux.git] / drivers / net / wireless / broadcom / brcm80211 / brcmfmac / dmi.c
1 /*
2  * Copyright 2018 Hans de Goede <hdegoede@redhat.com>
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16
17 #include <linux/dmi.h>
18 #include <linux/mod_devicetable.h>
19 #include "core.h"
20 #include "common.h"
21 #include "brcm_hw_ids.h"
22
23 /* The DMI data never changes so we can use a static buf for this */
24 static char dmi_board_type[128];
25
26 struct brcmf_dmi_data {
27         u32 chip;
28         u32 chiprev;
29         const char *board_type;
30 };
31
32 /* NOTE: Please keep all entries sorted alphabetically */
33
34 static const struct brcmf_dmi_data gpd_win_pocket_data = {
35         BRCM_CC_4356_CHIP_ID, 2, "gpd-win-pocket"
36 };
37
38 static const struct brcmf_dmi_data jumper_ezpad_mini3_data = {
39         BRCM_CC_43430_CHIP_ID, 0, "jumper-ezpad-mini3"
40 };
41
42 static const struct brcmf_dmi_data meegopad_t08_data = {
43         BRCM_CC_43340_CHIP_ID, 2, "meegopad-t08"
44 };
45
46 static const struct dmi_system_id dmi_platform_data[] = {
47         {
48                 /* Match for the GPDwin which unfortunately uses somewhat
49                  * generic dmi strings, which is why we test for 4 strings.
50                  * Comparing against 23 other byt/cht boards, board_vendor
51                  * and board_name are unique to the GPDwin, where as only one
52                  * other board has the same board_serial and 3 others have
53                  * the same default product_name. Also the GPDwin is the
54                  * only device to have both board_ and product_name not set.
55                  */
56                 .matches = {
57                         DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
58                         DMI_MATCH(DMI_BOARD_NAME, "Default string"),
59                         DMI_MATCH(DMI_BOARD_SERIAL, "Default string"),
60                         DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
61                 },
62                 .driver_data = (void *)&gpd_win_pocket_data,
63         },
64         {
65                 /* Jumper EZpad mini3 */
66                 .matches = {
67                         DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
68                         DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
69                         /* jumperx.T87.KFBNEEA02 with the version-nr dropped */
70                         DMI_MATCH(DMI_BIOS_VERSION, "jumperx.T87.KFBNEEA"),
71                 },
72                 .driver_data = (void *)&jumper_ezpad_mini3_data,
73         },
74         {
75                 /* Meegopad T08 */
76                 .matches = {
77                         DMI_MATCH(DMI_SYS_VENDOR, "Default string"),
78                         DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
79                         DMI_MATCH(DMI_BOARD_NAME, "T3 MRD"),
80                         DMI_MATCH(DMI_BOARD_VERSION, "V1.1"),
81                 },
82                 .driver_data = (void *)&meegopad_t08_data,
83         },
84         {}
85 };
86
87 void brcmf_dmi_probe(struct brcmf_mp_device *settings, u32 chip, u32 chiprev)
88 {
89         const struct dmi_system_id *match;
90         const struct brcmf_dmi_data *data;
91         const char *sys_vendor;
92         const char *product_name;
93
94         /* Some models have DMI strings which are too generic, e.g.
95          * "Default string", we use a quirk table for these.
96          */
97         for (match = dmi_first_match(dmi_platform_data);
98              match;
99              match = dmi_first_match(match + 1)) {
100                 data = match->driver_data;
101
102                 if (data->chip == chip && data->chiprev == chiprev) {
103                         settings->board_type = data->board_type;
104                         return;
105                 }
106         }
107
108         /* Not found in the quirk-table, use sys_vendor-product_name */
109         sys_vendor = dmi_get_system_info(DMI_SYS_VENDOR);
110         product_name = dmi_get_system_info(DMI_PRODUCT_NAME);
111         if (sys_vendor && product_name) {
112                 snprintf(dmi_board_type, sizeof(dmi_board_type), "%s-%s",
113                          sys_vendor, product_name);
114                 settings->board_type = dmi_board_type;
115         }
116 }