2 * dwc3-pci.c - PCI Specific glue layer
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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.
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.
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>
25 #include <linux/usb/otg.h>
26 #include <linux/usb/usb_phy_generic.h>
28 #include "platform_data.h"
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
41 struct platform_device *dwc3;
42 struct platform_device *usb2_phy;
43 struct platform_device *usb3_phy;
46 static int dwc3_pci_register_phys(struct dwc3_pci *glue)
48 struct usb_phy_generic_platform_data pdata;
49 struct platform_device *pdev;
52 memset(&pdata, 0x00, sizeof(pdata));
54 pdev = platform_device_alloc("usb_phy_generic", 0);
58 glue->usb2_phy = pdev;
59 pdata.type = USB_PHY_TYPE_USB2;
60 pdata.gpio_reset = -1;
62 ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
66 pdev = platform_device_alloc("usb_phy_generic", 1);
72 glue->usb3_phy = pdev;
73 pdata.type = USB_PHY_TYPE_USB3;
75 ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
79 ret = platform_device_add(glue->usb2_phy);
83 ret = platform_device_add(glue->usb3_phy);
90 platform_device_del(glue->usb2_phy);
93 platform_device_put(glue->usb3_phy);
96 platform_device_put(glue->usb2_phy);
101 static int dwc3_pci_probe(struct pci_dev *pci,
102 const struct pci_device_id *id)
104 struct resource res[2];
105 struct platform_device *dwc3;
106 struct dwc3_pci *glue;
108 struct device *dev = &pci->dev;
109 struct dwc3_platform_data dwc3_pdata;
111 memset(&dwc3_pdata, 0x00, sizeof(dwc3_pdata));
113 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
119 ret = pcim_enable_device(pci);
121 dev_err(dev, "failed to enable pci device\n");
127 ret = dwc3_pci_register_phys(glue);
129 dev_err(dev, "couldn't register PHYs\n");
133 dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
135 dev_err(dev, "couldn't allocate dwc3 device\n");
139 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
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;
146 res[1].start = pci->irq;
147 res[1].name = "dwc_usb3";
148 res[1].flags = IORESOURCE_IRQ;
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;
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;
163 dwc3_pdata.tx_de_emphasis_quirk = true;
164 dwc3_pdata.tx_de_emphasis = 1;
167 * FIXME these quirks should be removed when AMD NL
170 dwc3_pdata.disable_scramble_quirk = true;
171 dwc3_pdata.dis_u3_susphy_quirk = true;
172 dwc3_pdata.dis_u2_susphy_quirk = true;
175 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
177 dev_err(dev, "couldn't add resources to dwc3 device\n");
181 pci_set_drvdata(pci, glue);
183 ret = platform_device_add_data(dwc3, &dwc3_pdata, sizeof(dwc3_pdata));
187 dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
189 dwc3->dev.dma_mask = dev->dma_mask;
190 dwc3->dev.dma_parms = dev->dma_parms;
191 dwc3->dev.parent = dev;
194 ret = platform_device_add(dwc3);
196 dev_err(dev, "failed to register dwc3 device\n");
203 platform_device_put(dwc3);
207 static void dwc3_pci_remove(struct pci_dev *pci)
209 struct dwc3_pci *glue = pci_get_drvdata(pci);
211 platform_device_unregister(glue->dwc3);
212 platform_device_unregister(glue->usb2_phy);
213 platform_device_unregister(glue->usb3_phy);
216 static const struct pci_device_id dwc3_pci_id_table[] = {
218 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
219 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
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 */
229 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
231 #ifdef CONFIG_PM_SLEEP
232 static int dwc3_pci_suspend(struct device *dev)
234 struct pci_dev *pci = to_pci_dev(dev);
236 pci_disable_device(pci);
241 static int dwc3_pci_resume(struct device *dev)
243 struct pci_dev *pci = to_pci_dev(dev);
246 ret = pci_enable_device(pci);
248 dev_err(dev, "can't re-enable device --> %d\n", ret);
256 #endif /* CONFIG_PM_SLEEP */
258 static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
259 SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
262 static struct pci_driver dwc3_pci_driver = {
264 .id_table = dwc3_pci_id_table,
265 .probe = dwc3_pci_probe,
266 .remove = dwc3_pci_remove,
268 .pm = &dwc3_pci_dev_pm_ops,
272 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
273 MODULE_LICENSE("GPL v2");
274 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
276 module_pci_driver(dwc3_pci_driver);