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72246da4 FB |
1 | /** |
2 | * dwc3-pci.c - PCI Specific glue layer | |
3 | * | |
4 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com | |
72246da4 FB |
5 | * |
6 | * Authors: Felipe Balbi <balbi@ti.com>, | |
7 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
8 | * | |
5945f789 FB |
9 | * This program is free software: you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License version 2 of | |
11 | * the License as published by the Free Software Foundation. | |
72246da4 | 12 | * |
5945f789 FB |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
72246da4 FB |
17 | */ |
18 | ||
19 | #include <linux/kernel.h> | |
46a57283 | 20 | #include <linux/module.h> |
72246da4 FB |
21 | #include <linux/slab.h> |
22 | #include <linux/pci.h> | |
23 | #include <linux/platform_device.h> | |
a89d977c HK |
24 | #include <linux/gpio/consumer.h> |
25 | #include <linux/acpi.h> | |
72246da4 | 26 | |
8f317b47 HR |
27 | #include "platform_data.h" |
28 | ||
9a5a0783 JY |
29 | #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd |
30 | #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce | |
31 | #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf | |
32 | #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 | |
33 | #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e | |
34 | #define PCI_DEVICE_ID_INTEL_BSW 0x22b7 | |
35 | #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 | |
36 | #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 | |
b4c580a4 | 37 | #define PCI_DEVICE_ID_INTEL_BXT 0x0aaa |
1ffb4d5c | 38 | #define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa |
b4c580a4 | 39 | #define PCI_DEVICE_ID_INTEL_APL 0x5aaa |
72246da4 | 40 | |
a89d977c HK |
41 | static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; |
42 | static const struct acpi_gpio_params cs_gpios = { 1, 0, false }; | |
43 | ||
44 | static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = { | |
45 | { "reset-gpios", &reset_gpios, 1 }, | |
46 | { "cs-gpios", &cs_gpios, 1 }, | |
47 | { }, | |
48 | }; | |
49 | ||
2cd9ddf7 HK |
50 | static int dwc3_pci_quirks(struct pci_dev *pdev) |
51 | { | |
52 | if (pdev->vendor == PCI_VENDOR_ID_AMD && | |
53 | pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { | |
54 | struct dwc3_platform_data pdata; | |
55 | ||
56 | memset(&pdata, 0, sizeof(pdata)); | |
57 | ||
58 | pdata.has_lpm_erratum = true; | |
59 | pdata.lpm_nyet_threshold = 0xf; | |
60 | ||
61 | pdata.u2exit_lfps_quirk = true; | |
62 | pdata.u2ss_inp3_quirk = true; | |
63 | pdata.req_p1p2p3_quirk = true; | |
64 | pdata.del_p1p2p3_quirk = true; | |
65 | pdata.del_phy_power_chg_quirk = true; | |
66 | pdata.lfps_filter_quirk = true; | |
67 | pdata.rx_detect_poll_quirk = true; | |
68 | ||
69 | pdata.tx_de_emphasis_quirk = true; | |
70 | pdata.tx_de_emphasis = 1; | |
71 | ||
72 | /* | |
73 | * FIXME these quirks should be removed when AMD NL | |
74 | * taps out | |
75 | */ | |
76 | pdata.disable_scramble_quirk = true; | |
77 | pdata.dis_u3_susphy_quirk = true; | |
78 | pdata.dis_u2_susphy_quirk = true; | |
79 | ||
80 | return platform_device_add_data(pci_get_drvdata(pdev), &pdata, | |
81 | sizeof(pdata)); | |
82 | } | |
83 | ||
a89d977c HK |
84 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
85 | pdev->device == PCI_DEVICE_ID_INTEL_BYT) { | |
86 | struct gpio_desc *gpio; | |
87 | ||
88 | acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev), | |
89 | acpi_dwc3_byt_gpios); | |
90 | ||
2df033ca UKK |
91 | /* |
92 | * These GPIOs will turn on the USB2 PHY. Note that we have to | |
93 | * put the gpio descriptors again here because the phy driver | |
94 | * might want to grab them, too. | |
95 | */ | |
96 | gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); | |
97 | if (IS_ERR(gpio)) | |
98 | return PTR_ERR(gpio); | |
99 | ||
100 | gpiod_set_value_cansleep(gpio, 1); | |
101 | gpiod_put(gpio); | |
102 | ||
103 | gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); | |
104 | if (IS_ERR(gpio)) | |
105 | return PTR_ERR(gpio); | |
a89d977c | 106 | |
2df033ca | 107 | if (gpio) { |
a89d977c HK |
108 | gpiod_set_value_cansleep(gpio, 1); |
109 | gpiod_put(gpio); | |
110 | usleep_range(10000, 11000); | |
111 | } | |
112 | } | |
113 | ||
bb7f3d6d JY |
114 | if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS && |
115 | (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 || | |
116 | pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI || | |
117 | pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) { | |
118 | ||
119 | struct dwc3_platform_data pdata; | |
120 | ||
121 | memset(&pdata, 0, sizeof(pdata)); | |
122 | pdata.usb3_lpm_capable = true; | |
123 | pdata.has_lpm_erratum = true; | |
94218ee3 | 124 | pdata.dis_enblslpm_quirk = true; |
bb7f3d6d JY |
125 | |
126 | return platform_device_add_data(pci_get_drvdata(pdev), &pdata, | |
127 | sizeof(pdata)); | |
128 | } | |
129 | ||
2cd9ddf7 HK |
130 | return 0; |
131 | } | |
72246da4 | 132 | |
41ac7b3a | 133 | static int dwc3_pci_probe(struct pci_dev *pci, |
72246da4 FB |
134 | const struct pci_device_id *id) |
135 | { | |
136 | struct resource res[2]; | |
137 | struct platform_device *dwc3; | |
b09e99ee | 138 | int ret; |
802ca850 | 139 | struct device *dev = &pci->dev; |
72246da4 | 140 | |
f1c7e710 | 141 | ret = pcim_enable_device(pci); |
72246da4 | 142 | if (ret) { |
802ca850 CP |
143 | dev_err(dev, "failed to enable pci device\n"); |
144 | return -ENODEV; | |
72246da4 FB |
145 | } |
146 | ||
72246da4 FB |
147 | pci_set_master(pci); |
148 | ||
124dafde | 149 | dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); |
72246da4 | 150 | if (!dwc3) { |
802ca850 | 151 | dev_err(dev, "couldn't allocate dwc3 device\n"); |
f1c7e710 | 152 | return -ENOMEM; |
72246da4 FB |
153 | } |
154 | ||
155 | memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); | |
156 | ||
157 | res[0].start = pci_resource_start(pci, 0); | |
158 | res[0].end = pci_resource_end(pci, 0); | |
159 | res[0].name = "dwc_usb3"; | |
160 | res[0].flags = IORESOURCE_MEM; | |
161 | ||
162 | res[1].start = pci->irq; | |
163 | res[1].name = "dwc_usb3"; | |
164 | res[1].flags = IORESOURCE_IRQ; | |
165 | ||
166 | ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); | |
167 | if (ret) { | |
802ca850 | 168 | dev_err(dev, "couldn't add resources to dwc3 device\n"); |
f1c7e710 | 169 | return ret; |
72246da4 FB |
170 | } |
171 | ||
2cd9ddf7 HK |
172 | pci_set_drvdata(pci, dwc3); |
173 | ret = dwc3_pci_quirks(pci); | |
8f317b47 | 174 | if (ret) |
2cd9ddf7 | 175 | goto err; |
72246da4 | 176 | |
802ca850 | 177 | dwc3->dev.parent = dev; |
9caeb06e | 178 | ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev)); |
72246da4 FB |
179 | |
180 | ret = platform_device_add(dwc3); | |
181 | if (ret) { | |
802ca850 | 182 | dev_err(dev, "failed to register dwc3 device\n"); |
2cd9ddf7 | 183 | goto err; |
72246da4 FB |
184 | } |
185 | ||
186 | return 0; | |
2cd9ddf7 | 187 | err: |
72246da4 | 188 | platform_device_put(dwc3); |
72246da4 FB |
189 | return ret; |
190 | } | |
191 | ||
fb4e98ab | 192 | static void dwc3_pci_remove(struct pci_dev *pci) |
72246da4 | 193 | { |
a89d977c | 194 | acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev)); |
2cd9ddf7 | 195 | platform_device_unregister(pci_get_drvdata(pci)); |
72246da4 FB |
196 | } |
197 | ||
782df20c | 198 | static const struct pci_device_id dwc3_pci_id_table[] = { |
72246da4 FB |
199 | { |
200 | PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, | |
201 | PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), | |
202 | }, | |
41adc59c JY |
203 | { |
204 | PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, | |
205 | PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI), | |
206 | }, | |
e8095a25 JY |
207 | { |
208 | PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, | |
209 | PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31), | |
210 | }, | |
7d643664 | 211 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, |
b62cd96d | 212 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, |
85601f8c | 213 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, |
84a2b61b HK |
214 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, |
215 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, | |
b4c580a4 | 216 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), }, |
1ffb4d5c | 217 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), }, |
b4c580a4 | 218 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), }, |
9755449d | 219 | { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, |
72246da4 FB |
220 | { } /* Terminating Entry */ |
221 | }; | |
222 | MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); | |
223 | ||
224 | static struct pci_driver dwc3_pci_driver = { | |
0949e99b | 225 | .name = "dwc3-pci", |
72246da4 FB |
226 | .id_table = dwc3_pci_id_table, |
227 | .probe = dwc3_pci_probe, | |
7690417d | 228 | .remove = dwc3_pci_remove, |
72246da4 FB |
229 | }; |
230 | ||
231 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); | |
5945f789 | 232 | MODULE_LICENSE("GPL v2"); |
72246da4 FB |
233 | MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); |
234 | ||
95656336 | 235 | module_pci_driver(dwc3_pci_driver); |