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

// SPDX-License-Identifier: ISC
/*
 * Copyright 2018 Hans de Goede <hdegoede@redhat.com>
 */

#include <linux/dmi.h>
#include <linux/mod_devicetable.h>
#include "core.h"
#include "common.h"
#include "brcm_hw_ids.h"

/* The DMI data never changes so we can use a static buf for this */
static char dmi_board_type[128];

struct brcmf_dmi_data {
	u32 chip;
	u32 chiprev;
	const char *board_type;
};

/* NOTE: Please keep all entries sorted alphabetically */

static const struct brcmf_dmi_data acepc_t8_data = {
	BRCM_CC_4345_CHIP_ID, 6, "acepc-t8"
};

static const struct brcmf_dmi_data gpd_win_pocket_data = {
	BRCM_CC_4356_CHIP_ID, 2, "gpd-win-pocket"
};

static const struct brcmf_dmi_data jumper_ezpad_mini3_data = {
	BRCM_CC_43430_CHIP_ID, 0, "jumper-ezpad-mini3"
};

static const struct brcmf_dmi_data meegopad_t08_data = {
	BRCM_CC_43340_CHIP_ID, 2, "meegopad-t08"
};

static const struct brcmf_dmi_data pov_tab_p1006w_data = {
	BRCM_CC_43340_CHIP_ID, 2, "pov-tab-p1006w-data"
};

static const struct dmi_system_id dmi_platform_data[] = {
	{
		/* ACEPC T8 Cherry Trail Z8350 mini PC */
		.matches = {
			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
			DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T8"),
			/* also match on somewhat unique bios-version */
			DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"),
		},
		.driver_data = (void *)&acepc_t8_data,
	},
	{
		/* ACEPC T11 Cherry Trail Z8350 mini PC, same wifi as the T8 */
		.matches = {
			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
			DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T11"),
			/* also match on somewhat unique bios-version */
			DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"),
		},
		.driver_data = (void *)&acepc_t8_data,
	},
	{
		/* Match for the GPDwin which unfortunately uses somewhat
		 * generic dmi strings, which is why we test for 4 strings.
		 * Comparing against 23 other byt/cht boards, board_vendor
		 * and board_name are unique to the GPDwin, where as only one
		 * other board has the same board_serial and 3 others have
		 * the same default product_name. Also the GPDwin is the
		 * only device to have both board_ and product_name not set.
		 */
		.matches = {
			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
			DMI_MATCH(DMI_BOARD_NAME, "Default string"),
			DMI_MATCH(DMI_BOARD_SERIAL, "Default string"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
		},
		.driver_data = (void *)&gpd_win_pocket_data,
	},
	{
		/* Jumper EZpad mini3 */
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
			DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
			/* jumperx.T87.KFBNEEA02 with the version-nr dropped */
			DMI_MATCH(DMI_BIOS_VERSION, "jumperx.T87.KFBNEEA"),
		},
		.driver_data = (void *)&jumper_ezpad_mini3_data,
	},
	{
		/* Meegopad T08 */
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Default string"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
			DMI_MATCH(DMI_BOARD_NAME, "T3 MRD"),
			DMI_MATCH(DMI_BOARD_VERSION, "V1.1"),
		},
		.driver_data = (void *)&meegopad_t08_data,
	},
	{
		/* Point of View TAB-P1006W-232 */
		.matches = {
			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Insyde"),
			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "BayTrail"),
			/* Note 105b is Foxcon's USB/PCI vendor id */
			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "105B"),
			DMI_EXACT_MATCH(DMI_BOARD_NAME, "0E57"),
		},
		.driver_data = (void *)&pov_tab_p1006w_data,
	},
	{}
};

void brcmf_dmi_probe(struct brcmf_mp_device *settings, u32 chip, u32 chiprev)
{
	const struct dmi_system_id *match;
	const struct brcmf_dmi_data *data;
	const char *sys_vendor;
	const char *product_name;

	/* Some models have DMI strings which are too generic, e.g.
	 * "Default string", we use a quirk table for these.
	 */
	for (match = dmi_first_match(dmi_platform_data);
	     match;
	     match = dmi_first_match(match + 1)) {
		data = match->driver_data;

		if (data->chip == chip && data->chiprev == chiprev) {
			settings->board_type = data->board_type;
			return;
		}
	}

	/* Not found in the quirk-table, use sys_vendor-product_name */
	sys_vendor = dmi_get_system_info(DMI_SYS_VENDOR);
	product_name = dmi_get_system_info(DMI_PRODUCT_NAME);
	if (sys_vendor && product_name) {
		snprintf(dmi_board_type, sizeof(dmi_board_type), "%s-%s",
			 sys_vendor, product_name);
		settings->board_type = dmi_board_type;
	}
}