LXR linux/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c

   1// SPDX-License-Identifier: ISC
   2/*
   3 * Copyright 2018 Hans de Goede <hdegoede@redhat.com>
   4 */
   5
   6#include <linux/dmi.h>
   7#include <linux/mod_devicetable.h>
   8#include "core.h"
   9#include "common.h"
  10#include "brcm_hw_ids.h"
  11
  12/* The DMI data never changes so we can use a static buf for this */
  13static char dmi_board_type[128];
  14
  15struct brcmf_dmi_data {
  16        u32 chip;
  17        u32 chiprev;
  18        const char *board_type;
  19};
  20
  21/* NOTE: Please keep all entries sorted alphabetically */
  22
  23static const struct brcmf_dmi_data acepc_t8_data = {
  24        BRCM_CC_4345_CHIP_ID, 6, "acepc-t8"
  25};
  26
  27static const struct brcmf_dmi_data gpd_win_pocket_data = {
  28        BRCM_CC_4356_CHIP_ID, 2, "gpd-win-pocket"
  29};
  30
  31static const struct brcmf_dmi_data jumper_ezpad_mini3_data = {
  32        BRCM_CC_43430_CHIP_ID, 0, "jumper-ezpad-mini3"
  33};
  34
  35static const struct brcmf_dmi_data meegopad_t08_data = {
  36        BRCM_CC_43340_CHIP_ID, 2, "meegopad-t08"
  37};
  38
  39static const struct brcmf_dmi_data pov_tab_p1006w_data = {
  40        BRCM_CC_43340_CHIP_ID, 2, "pov-tab-p1006w-data"
  41};
  42
  43static const struct dmi_system_id dmi_platform_data[] = {
  44        {
  45                /* ACEPC T8 Cherry Trail Z8350 mini PC */
  46                .matches = {
  47                        DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
  48                        DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
  49                        DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T8"),
  50                        /* also match on somewhat unique bios-version */
  51                        DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"),
  52                },
  53                .driver_data = (void *)&acepc_t8_data,
  54        },
  55        {
  56                /* ACEPC T11 Cherry Trail Z8350 mini PC, same wifi as the T8 */
  57                .matches = {
  58                        DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
  59                        DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
  60                        DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T11"),
  61                        /* also match on somewhat unique bios-version */
  62                        DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"),
  63                },
  64                .driver_data = (void *)&acepc_t8_data,
  65        },
  66        {
  67                /* Match for the GPDwin which unfortunately uses somewhat
  68                 * generic dmi strings, which is why we test for 4 strings.
  69                 * Comparing against 23 other byt/cht boards, board_vendor
  70                 * and board_name are unique to the GPDwin, where as only one
  71                 * other board has the same board_serial and 3 others have
  72                 * the same default product_name. Also the GPDwin is the
  73                 * only device to have both board_ and product_name not set.
  74                 */
  75                .matches = {
  76                        DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
  77                        DMI_MATCH(DMI_BOARD_NAME, "Default string"),
  78                        DMI_MATCH(DMI_BOARD_SERIAL, "Default string"),
  79                        DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
  80                },
  81                .driver_data = (void *)&gpd_win_pocket_data,
  82        },
  83        {
  84                /* Jumper EZpad mini3 */
  85                .matches = {
  86                        DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
  87                        DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
  88                        /* jumperx.T87.KFBNEEA02 with the version-nr dropped */
  89                        DMI_MATCH(DMI_BIOS_VERSION, "jumperx.T87.KFBNEEA"),
  90                },
  91                .driver_data = (void *)&jumper_ezpad_mini3_data,
  92        },
  93        {
  94                /* Meegopad T08 */
  95                .matches = {
  96                        DMI_MATCH(DMI_SYS_VENDOR, "Default string"),
  97                        DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
  98                        DMI_MATCH(DMI_BOARD_NAME, "T3 MRD"),
  99                        DMI_MATCH(DMI_BOARD_VERSION, "V1.1"),
 100                },
 101                .driver_data = (void *)&meegopad_t08_data,
 102        },
 103        {
 104                /* Point of View TAB-P1006W-232 */
 105                .matches = {
 106                        DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Insyde"),
 107                        DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "BayTrail"),
 108                        /* Note 105b is Foxcon's USB/PCI vendor id */
 109                        DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "105B"),
 110                        DMI_EXACT_MATCH(DMI_BOARD_NAME, "0E57"),
 111                },
 112                .driver_data = (void *)&pov_tab_p1006w_data,
 113        },
 114        {}
 115};
 116
 117void brcmf_dmi_probe(struct brcmf_mp_device *settings, u32 chip, u32 chiprev)
 118{
 119        const struct dmi_system_id *match;
 120        const struct brcmf_dmi_data *data;
 121        const char *sys_vendor;
 122        const char *product_name;
 123
 124        /* Some models have DMI strings which are too generic, e.g.
 125         * "Default string", we use a quirk table for these.
 126         */
 127        for (match = dmi_first_match(dmi_platform_data);
 128             match;
 129             match = dmi_first_match(match + 1)) {
 130                data = match->driver_data;
 131
 132                if (data->chip == chip && data->chiprev == chiprev) {
 133                        settings->board_type = data->board_type;
 134                        return;
 135                }
 136        }
 137
 138        /* Not found in the quirk-table, use sys_vendor-product_name */
 139        sys_vendor = dmi_get_system_info(DMI_SYS_VENDOR);
 140        product_name = dmi_get_system_info(DMI_PRODUCT_NAME);
 141        if (sys_vendor && product_name) {
 142                snprintf(dmi_board_type, sizeof(dmi_board_type), "%s-%s",
 143                         sys_vendor, product_name);
 144                settings->board_type = dmi_board_type;
 145        }
 146}
 147