1 // SPDX-License-Identifier: GPL-2.0-only
2 // NXP Wireless LAN device driver: PCIE and platform specific quirks
3
4 #include <linux/dmi.h>
5
6 #include "pcie_quirks.h"
7
8 /* quirk table based on DMI matching */
9 static const struct dmi_system_id mwifiex_quirk_table[] = {
10 {
11 .ident = "Surface Pro 4",
12 .matches = {
13 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
14 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"),
15 },
16 .driver_data = (void *)QUIRK_FW_RST_D3COLD,
17 },
18 {
19 .ident = "Surface Pro 5",
20 .matches = {
21 /* match for SKU here due to generic product name "Surface Pro" */
22 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
23 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"),
24 },
25 .driver_data = (void *)QUIRK_FW_RST_D3COLD,
26 },
27 {
28 .ident = "Surface Pro 5 (LTE)",
29 .matches = {
30 /* match for SKU here due to generic product name "Surface Pro" */
31 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
32 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"),
33 },
34 .driver_data = (void *)QUIRK_FW_RST_D3COLD,
35 },
36 {
37 .ident = "Surface Pro 6",
38 .matches = {
39 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
40 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"),
41 },
42 .driver_data = (void *)QUIRK_FW_RST_D3COLD,
43 },
44 {
45 .ident = "Surface Book 1",
46 .matches = {
47 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
48 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"),
49 },
50 .driver_data = (void *)QUIRK_FW_RST_D3COLD,
51 },
52 {
53 .ident = "Surface Book 2",
54 .matches = {
55 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
56 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"),
57 },
58 .driver_data = (void *)QUIRK_FW_RST_D3COLD,
59 },
60 {
61 .ident = "Surface Laptop 1",
62 .matches = {
63 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
64 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"),
65 },
66 .driver_data = (void *)QUIRK_FW_RST_D3COLD,
67 },
68 {
69 .ident = "Surface Laptop 2",
70 .matches = {
71 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
72 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"),
73 },
74 .driver_data = (void *)QUIRK_FW_RST_D3COLD,
75 },
76 {}
77 };
78
mwifiex_initialize_quirks(struct pcie_service_card * card)79 void mwifiex_initialize_quirks(struct pcie_service_card *card)
80 {
81 struct pci_dev *pdev = card->dev;
82 const struct dmi_system_id *dmi_id;
83
84 dmi_id = dmi_first_match(mwifiex_quirk_table);
85 if (dmi_id)
86 card->quirks = (uintptr_t)dmi_id->driver_data;
87
88 if (!card->quirks)
89 dev_info(&pdev->dev, "no quirks enabled\n");
90 if (card->quirks & QUIRK_FW_RST_D3COLD)
91 dev_info(&pdev->dev, "quirk reset_d3cold enabled\n");
92 }
93
mwifiex_pcie_set_power_d3cold(struct pci_dev * pdev)94 static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev)
95 {
96 dev_info(&pdev->dev, "putting into D3cold...\n");
97
98 pci_save_state(pdev);
99 if (pci_is_enabled(pdev))
100 pci_disable_device(pdev);
101 pci_set_power_state(pdev, PCI_D3cold);
102 }
103
mwifiex_pcie_set_power_d0(struct pci_dev * pdev)104 static int mwifiex_pcie_set_power_d0(struct pci_dev *pdev)
105 {
106 int ret;
107
108 dev_info(&pdev->dev, "putting into D0...\n");
109
110 pci_set_power_state(pdev, PCI_D0);
111 ret = pci_enable_device(pdev);
112 if (ret) {
113 dev_err(&pdev->dev, "pci_enable_device failed\n");
114 return ret;
115 }
116 pci_restore_state(pdev);
117
118 return 0;
119 }
120
mwifiex_pcie_reset_d3cold_quirk(struct pci_dev * pdev)121 int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev)
122 {
123 struct pci_dev *parent_pdev = pci_upstream_bridge(pdev);
124 int ret;
125
126 /* Power-cycle (put into D3cold then D0) */
127 dev_info(&pdev->dev, "Using reset_d3cold quirk to perform FW reset\n");
128
129 /* We need to perform power-cycle also for bridge of wifi because
130 * on some devices (e.g. Surface Book 1), the OS for some reasons
131 * can't know the real power state of the bridge.
132 * When tried to power-cycle only wifi, the reset failed with the
133 * following dmesg log:
134 * "Cannot transition to power state D0 for parent in D3hot".
135 */
136 mwifiex_pcie_set_power_d3cold(pdev);
137 mwifiex_pcie_set_power_d3cold(parent_pdev);
138
139 ret = mwifiex_pcie_set_power_d0(parent_pdev);
140 if (ret)
141 return ret;
142 ret = mwifiex_pcie_set_power_d0(pdev);
143 if (ret)
144 return ret;
145
146 return 0;
147 }
148