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