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);