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 */
9static 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
79void 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
94static 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
104static 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
121int 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