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// SPDX-License-Identifier: GPL-2.0-only
// NXP Wireless LAN device driver: PCIE and platform specific quirks
#include <linux/dmi.h>
#include "pcie_quirks.h"
/* quirk table based on DMI matching */
static const struct dmi_system_id mwifiex_quirk_table[] = {
{
.ident = "Surface Pro 4",
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"),
},
.driver_data = (void *)QUIRK_FW_RST_D3COLD,
},
{
.ident = "Surface Pro 5",
.matches = {
/* match for SKU here due to generic product name "Surface Pro" */
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"),
},
.driver_data = (void *)QUIRK_FW_RST_D3COLD,
},
{
.ident = "Surface Pro 5 (LTE)",
.matches = {
/* match for SKU here due to generic product name "Surface Pro" */
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"),
},
.driver_data = (void *)QUIRK_FW_RST_D3COLD,
},
{
.ident = "Surface Pro 6",
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"),
},
.driver_data = (void *)QUIRK_FW_RST_D3COLD,
},
{
.ident = "Surface Book 1",
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"),
},
.driver_data = (void *)QUIRK_FW_RST_D3COLD,
},
{
.ident = "Surface Book 2",
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"),
},
.driver_data = (void *)QUIRK_FW_RST_D3COLD,
},
{
.ident = "Surface Laptop 1",
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"),
},
.driver_data = (void *)QUIRK_FW_RST_D3COLD,
},
{
.ident = "Surface Laptop 2",
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"),
},
.driver_data = (void *)QUIRK_FW_RST_D3COLD,
},
{}
};
void mwifiex_initialize_quirks(struct pcie_service_card *card)
{
struct pci_dev *pdev = card->dev;
const struct dmi_system_id *dmi_id;
dmi_id = dmi_first_match(mwifiex_quirk_table);
if (dmi_id)
card->quirks = (uintptr_t)dmi_id->driver_data;
if (!card->quirks)
dev_info(&pdev->dev, "no quirks enabled\n");
if (card->quirks & QUIRK_FW_RST_D3COLD)
dev_info(&pdev->dev, "quirk reset_d3cold enabled\n");
}
static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev)
{
dev_info(&pdev->dev, "putting into D3cold...\n");
pci_save_state(pdev);
if (pci_is_enabled(pdev))
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3cold);
}
static int mwifiex_pcie_set_power_d0(struct pci_dev *pdev)
{
int ret;
dev_info(&pdev->dev, "putting into D0...\n");
pci_set_power_state(pdev, PCI_D0);
ret = pci_enable_device(pdev);
if (ret) {
dev_err(&pdev->dev, "pci_enable_device failed\n");
return ret;
}
pci_restore_state(pdev);
return 0;
}
int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev)
{
struct pci_dev *parent_pdev = pci_upstream_bridge(pdev);
int ret;
/* Power-cycle (put into D3cold then D0) */
dev_info(&pdev->dev, "Using reset_d3cold quirk to perform FW reset\n");
/* We need to perform power-cycle also for bridge of wifi because
* on some devices (e.g. Surface Book 1), the OS for some reasons
* can't know the real power state of the bridge.
* When tried to power-cycle only wifi, the reset failed with the
* following dmesg log:
* "Cannot transition to power state D0 for parent in D3hot".
*/
mwifiex_pcie_set_power_d3cold(pdev);
mwifiex_pcie_set_power_d3cold(parent_pdev);
ret = mwifiex_pcie_set_power_d0(parent_pdev);
if (ret)
return ret;
ret = mwifiex_pcie_set_power_d0(pdev);
if (ret)
return ret;
return 0;
}
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