Merge tag 'davinci-for-v4.7/dt-part2' of git://git.kernel.org/pub/scm/linux/kernel...
[sfrench/cifs-2.6.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_BXT_M               0x1aaa
39 #define PCI_DEVICE_ID_INTEL_APL                 0x5aaa
40
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
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
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
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);
106
107                 if (gpio) {
108                         gpiod_set_value_cansleep(gpio, 1);
109                         gpiod_put(gpio);
110                         usleep_range(10000, 11000);
111                 }
112         }
113
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;
124                 pdata.dis_enblslpm_quirk = true;
125
126                 return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
127                                                 sizeof(pdata));
128         }
129
130         return 0;
131 }
132
133 static int dwc3_pci_probe(struct pci_dev *pci,
134                 const struct pci_device_id *id)
135 {
136         struct resource         res[2];
137         struct platform_device  *dwc3;
138         int                     ret;
139         struct device           *dev = &pci->dev;
140
141         ret = pcim_enable_device(pci);
142         if (ret) {
143                 dev_err(dev, "failed to enable pci device\n");
144                 return -ENODEV;
145         }
146
147         pci_set_master(pci);
148
149         dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
150         if (!dwc3) {
151                 dev_err(dev, "couldn't allocate dwc3 device\n");
152                 return -ENOMEM;
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) {
168                 dev_err(dev, "couldn't add resources to dwc3 device\n");
169                 return ret;
170         }
171
172         pci_set_drvdata(pci, dwc3);
173         ret = dwc3_pci_quirks(pci);
174         if (ret)
175                 goto err;
176
177         dwc3->dev.parent = dev;
178         ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev));
179
180         ret = platform_device_add(dwc3);
181         if (ret) {
182                 dev_err(dev, "failed to register dwc3 device\n");
183                 goto err;
184         }
185
186         return 0;
187 err:
188         platform_device_put(dwc3);
189         return ret;
190 }
191
192 static void dwc3_pci_remove(struct pci_dev *pci)
193 {
194         acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
195         platform_device_unregister(pci_get_drvdata(pci));
196 }
197
198 static const struct pci_device_id dwc3_pci_id_table[] = {
199         {
200                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
201                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
202         },
203         {
204                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
205                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
206         },
207         {
208                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
209                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
210         },
211         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
212         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
213         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
214         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
215         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
216         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
217         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), },
218         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
219         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
220         {  }    /* Terminating Entry */
221 };
222 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
223
224 static struct pci_driver dwc3_pci_driver = {
225         .name           = "dwc3-pci",
226         .id_table       = dwc3_pci_id_table,
227         .probe          = dwc3_pci_probe,
228         .remove         = dwc3_pci_remove,
229 };
230
231 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
232 MODULE_LICENSE("GPL v2");
233 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
234
235 module_pci_driver(dwc3_pci_driver);