Merge tag 'v4.4.42' into linux-linaro-lsk-v4.4
[firefly-linux-kernel-4.4.55.git] / drivers / usb / dwc3 / dwc3-pci.c
1 /**
2  * dwc3-pci.c - PCI Specific glue layer
3  *
4  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
5  *
6  * Authors: Felipe Balbi <balbi@ti.com>,
7  *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
8  *
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.
12  *
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.
17  */
18
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/slab.h>
22 #include <linux/pci.h>
23 #include <linux/platform_device.h>
24 #include <linux/gpio/consumer.h>
25 #include <linux/acpi.h>
26
27 #include "platform_data.h"
28
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
37 #define PCI_DEVICE_ID_INTEL_BXT                 0x0aaa
38 #define PCI_DEVICE_ID_INTEL_APL                 0x5aaa
39 #define PCI_DEVICE_ID_INTEL_KBP                 0xa2b0
40 #define PCI_DEVICE_ID_INTEL_GLK                 0x31aa
41
42 static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
43 static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
44
45 static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
46         { "reset-gpios", &reset_gpios, 1 },
47         { "cs-gpios", &cs_gpios, 1 },
48         { },
49 };
50
51 static int dwc3_pci_quirks(struct pci_dev *pdev)
52 {
53         if (pdev->vendor == PCI_VENDOR_ID_AMD &&
54             pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
55                 struct dwc3_platform_data pdata;
56
57                 memset(&pdata, 0, sizeof(pdata));
58
59                 pdata.has_lpm_erratum = true;
60                 pdata.lpm_nyet_threshold = 0xf;
61
62                 pdata.u2exit_lfps_quirk = true;
63                 pdata.u2ss_inp3_quirk = true;
64                 pdata.req_p1p2p3_quirk = true;
65                 pdata.del_p1p2p3_quirk = true;
66                 pdata.del_phy_power_chg_quirk = true;
67                 pdata.lfps_filter_quirk = true;
68                 pdata.rx_detect_poll_quirk = true;
69
70                 pdata.tx_de_emphasis_quirk = true;
71                 pdata.tx_de_emphasis = 1;
72
73                 /*
74                  * FIXME these quirks should be removed when AMD NL
75                  * taps out
76                  */
77                 pdata.disable_scramble_quirk = true;
78                 pdata.dis_u3_susphy_quirk = true;
79                 pdata.dis_u2_susphy_quirk = true;
80
81                 return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
82                                                 sizeof(pdata));
83         }
84
85         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
86             pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
87                 struct gpio_desc *gpio;
88
89                 acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
90                                           acpi_dwc3_byt_gpios);
91
92                 /*
93                  * These GPIOs will turn on the USB2 PHY. Note that we have to
94                  * put the gpio descriptors again here because the phy driver
95                  * might want to grab them, too.
96                  */
97                 gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
98                 if (IS_ERR(gpio))
99                         return PTR_ERR(gpio);
100
101                 gpiod_set_value_cansleep(gpio, 1);
102                 gpiod_put(gpio);
103
104                 gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
105                 if (IS_ERR(gpio))
106                         return PTR_ERR(gpio);
107
108                 if (gpio) {
109                         gpiod_set_value_cansleep(gpio, 1);
110                         gpiod_put(gpio);
111                         usleep_range(10000, 11000);
112                 }
113         }
114
115         if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
116             (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 ||
117              pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI ||
118              pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) {
119
120                 struct dwc3_platform_data pdata;
121
122                 memset(&pdata, 0, sizeof(pdata));
123                 pdata.usb3_lpm_capable = true;
124                 pdata.has_lpm_erratum = true;
125                 pdata.dis_enblslpm_quirk = true;
126
127                 return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
128                                                 sizeof(pdata));
129         }
130
131         return 0;
132 }
133
134 static int dwc3_pci_probe(struct pci_dev *pci,
135                 const struct pci_device_id *id)
136 {
137         struct resource         res[2];
138         struct platform_device  *dwc3;
139         int                     ret;
140         struct device           *dev = &pci->dev;
141
142         ret = pcim_enable_device(pci);
143         if (ret) {
144                 dev_err(dev, "failed to enable pci device\n");
145                 return -ENODEV;
146         }
147
148         pci_set_master(pci);
149
150         dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
151         if (!dwc3) {
152                 dev_err(dev, "couldn't allocate dwc3 device\n");
153                 return -ENOMEM;
154         }
155
156         memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
157
158         res[0].start    = pci_resource_start(pci, 0);
159         res[0].end      = pci_resource_end(pci, 0);
160         res[0].name     = "dwc_usb3";
161         res[0].flags    = IORESOURCE_MEM;
162
163         res[1].start    = pci->irq;
164         res[1].name     = "dwc_usb3";
165         res[1].flags    = IORESOURCE_IRQ;
166
167         ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
168         if (ret) {
169                 dev_err(dev, "couldn't add resources to dwc3 device\n");
170                 return ret;
171         }
172
173         pci_set_drvdata(pci, dwc3);
174         ret = dwc3_pci_quirks(pci);
175         if (ret)
176                 goto err;
177
178         dwc3->dev.parent = dev;
179         ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev));
180
181         ret = platform_device_add(dwc3);
182         if (ret) {
183                 dev_err(dev, "failed to register dwc3 device\n");
184                 goto err;
185         }
186
187         return 0;
188 err:
189         platform_device_put(dwc3);
190         return ret;
191 }
192
193 static void dwc3_pci_remove(struct pci_dev *pci)
194 {
195         acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
196         platform_device_unregister(pci_get_drvdata(pci));
197 }
198
199 static const struct pci_device_id dwc3_pci_id_table[] = {
200         {
201                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
202                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
203         },
204         {
205                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
206                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
207         },
208         {
209                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
210                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
211         },
212         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
213         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
214         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
215         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
216         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
217         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
218         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
219         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), },
220         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_GLK), },
221         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
222         {  }    /* Terminating Entry */
223 };
224 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
225
226 static struct pci_driver dwc3_pci_driver = {
227         .name           = "dwc3-pci",
228         .id_table       = dwc3_pci_id_table,
229         .probe          = dwc3_pci_probe,
230         .remove         = dwc3_pci_remove,
231 };
232
233 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
234 MODULE_LICENSE("GPL v2");
235 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
236
237 module_pci_driver(dwc3_pci_driver);