Merge remote-tracking branches 'spi/fix/dw', 'spi/fix/msiof' and 'spi/fix/pxa2xx...
[linux-2.6-microblaze.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
25 #include <linux/usb/otg.h>
26 #include <linux/usb/usb_phy_generic.h>
27
28 #include "platform_data.h"
29
30 /* FIXME define these in <linux/pci_ids.h> */
31 #define PCI_VENDOR_ID_SYNOPSYS          0x16c3
32 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
33 #define PCI_DEVICE_ID_INTEL_BYT         0x0f37
34 #define PCI_DEVICE_ID_INTEL_MRFLD       0x119e
35 #define PCI_DEVICE_ID_INTEL_BSW         0x22B7
36 #define PCI_DEVICE_ID_INTEL_SPTLP       0x9d30
37 #define PCI_DEVICE_ID_INTEL_SPTH        0xa130
38
39 struct dwc3_pci {
40         struct device           *dev;
41         struct platform_device  *dwc3;
42         struct platform_device  *usb2_phy;
43         struct platform_device  *usb3_phy;
44 };
45
46 static int dwc3_pci_register_phys(struct dwc3_pci *glue)
47 {
48         struct usb_phy_generic_platform_data pdata;
49         struct platform_device  *pdev;
50         int                     ret;
51
52         memset(&pdata, 0x00, sizeof(pdata));
53
54         pdev = platform_device_alloc("usb_phy_generic", 0);
55         if (!pdev)
56                 return -ENOMEM;
57
58         glue->usb2_phy = pdev;
59         pdata.type = USB_PHY_TYPE_USB2;
60         pdata.gpio_reset = -1;
61
62         ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
63         if (ret)
64                 goto err1;
65
66         pdev = platform_device_alloc("usb_phy_generic", 1);
67         if (!pdev) {
68                 ret = -ENOMEM;
69                 goto err1;
70         }
71
72         glue->usb3_phy = pdev;
73         pdata.type = USB_PHY_TYPE_USB3;
74
75         ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
76         if (ret)
77                 goto err2;
78
79         ret = platform_device_add(glue->usb2_phy);
80         if (ret)
81                 goto err2;
82
83         ret = platform_device_add(glue->usb3_phy);
84         if (ret)
85                 goto err3;
86
87         return 0;
88
89 err3:
90         platform_device_del(glue->usb2_phy);
91
92 err2:
93         platform_device_put(glue->usb3_phy);
94
95 err1:
96         platform_device_put(glue->usb2_phy);
97
98         return ret;
99 }
100
101 static int dwc3_pci_probe(struct pci_dev *pci,
102                 const struct pci_device_id *id)
103 {
104         struct resource         res[2];
105         struct platform_device  *dwc3;
106         struct dwc3_pci         *glue;
107         int                     ret;
108         struct device           *dev = &pci->dev;
109         struct dwc3_platform_data dwc3_pdata;
110
111         memset(&dwc3_pdata, 0x00, sizeof(dwc3_pdata));
112
113         glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
114         if (!glue)
115                 return -ENOMEM;
116
117         glue->dev = dev;
118
119         ret = pcim_enable_device(pci);
120         if (ret) {
121                 dev_err(dev, "failed to enable pci device\n");
122                 return -ENODEV;
123         }
124
125         pci_set_master(pci);
126
127         ret = dwc3_pci_register_phys(glue);
128         if (ret) {
129                 dev_err(dev, "couldn't register PHYs\n");
130                 return ret;
131         }
132
133         dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
134         if (!dwc3) {
135                 dev_err(dev, "couldn't allocate dwc3 device\n");
136                 return -ENOMEM;
137         }
138
139         memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
140
141         res[0].start    = pci_resource_start(pci, 0);
142         res[0].end      = pci_resource_end(pci, 0);
143         res[0].name     = "dwc_usb3";
144         res[0].flags    = IORESOURCE_MEM;
145
146         res[1].start    = pci->irq;
147         res[1].name     = "dwc_usb3";
148         res[1].flags    = IORESOURCE_IRQ;
149
150         if (pci->vendor == PCI_VENDOR_ID_AMD &&
151                         pci->device == PCI_DEVICE_ID_AMD_NL_USB) {
152                 dwc3_pdata.has_lpm_erratum = true;
153                 dwc3_pdata.lpm_nyet_threshold = 0xf;
154
155                 dwc3_pdata.u2exit_lfps_quirk = true;
156                 dwc3_pdata.u2ss_inp3_quirk = true;
157                 dwc3_pdata.req_p1p2p3_quirk = true;
158                 dwc3_pdata.del_p1p2p3_quirk = true;
159                 dwc3_pdata.del_phy_power_chg_quirk = true;
160                 dwc3_pdata.lfps_filter_quirk = true;
161                 dwc3_pdata.rx_detect_poll_quirk = true;
162
163                 dwc3_pdata.tx_de_emphasis_quirk = true;
164                 dwc3_pdata.tx_de_emphasis = 1;
165
166                 /*
167                  * FIXME these quirks should be removed when AMD NL
168                  * taps out
169                  */
170                 dwc3_pdata.disable_scramble_quirk = true;
171                 dwc3_pdata.dis_u3_susphy_quirk = true;
172                 dwc3_pdata.dis_u2_susphy_quirk = true;
173         }
174
175         ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
176         if (ret) {
177                 dev_err(dev, "couldn't add resources to dwc3 device\n");
178                 return ret;
179         }
180
181         pci_set_drvdata(pci, glue);
182
183         ret = platform_device_add_data(dwc3, &dwc3_pdata, sizeof(dwc3_pdata));
184         if (ret)
185                 goto err3;
186
187         dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
188
189         dwc3->dev.dma_mask = dev->dma_mask;
190         dwc3->dev.dma_parms = dev->dma_parms;
191         dwc3->dev.parent = dev;
192         glue->dwc3 = dwc3;
193
194         ret = platform_device_add(dwc3);
195         if (ret) {
196                 dev_err(dev, "failed to register dwc3 device\n");
197                 goto err3;
198         }
199
200         return 0;
201
202 err3:
203         platform_device_put(dwc3);
204         return ret;
205 }
206
207 static void dwc3_pci_remove(struct pci_dev *pci)
208 {
209         struct dwc3_pci *glue = pci_get_drvdata(pci);
210
211         platform_device_unregister(glue->dwc3);
212         platform_device_unregister(glue->usb2_phy);
213         platform_device_unregister(glue->usb3_phy);
214 }
215
216 static const struct pci_device_id dwc3_pci_id_table[] = {
217         {
218                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
219                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
220         },
221         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
222         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
223         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
224         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
225         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
226         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
227         {  }    /* Terminating Entry */
228 };
229 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
230
231 #ifdef CONFIG_PM_SLEEP
232 static int dwc3_pci_suspend(struct device *dev)
233 {
234         struct pci_dev  *pci = to_pci_dev(dev);
235
236         pci_disable_device(pci);
237
238         return 0;
239 }
240
241 static int dwc3_pci_resume(struct device *dev)
242 {
243         struct pci_dev  *pci = to_pci_dev(dev);
244         int             ret;
245
246         ret = pci_enable_device(pci);
247         if (ret) {
248                 dev_err(dev, "can't re-enable device --> %d\n", ret);
249                 return ret;
250         }
251
252         pci_set_master(pci);
253
254         return 0;
255 }
256 #endif /* CONFIG_PM_SLEEP */
257
258 static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
259         SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
260 };
261
262 static struct pci_driver dwc3_pci_driver = {
263         .name           = "dwc3-pci",
264         .id_table       = dwc3_pci_id_table,
265         .probe          = dwc3_pci_probe,
266         .remove         = dwc3_pci_remove,
267         .driver         = {
268                 .pm     = &dwc3_pci_dev_pm_ops,
269         },
270 };
271
272 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
273 MODULE_LICENSE("GPL v2");
274 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
275
276 module_pci_driver(dwc3_pci_driver);