diff options
Diffstat (limited to 'drivers/usb/dwc3/dwc3-pci.c')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-pci.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c new file mode 100644 index 0000000000..7c4faf7387 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -0,0 +1,272 @@ +/** + * dwc3-pci.c - PCI Specific glue layer + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com + * + * Authors: Felipe Balbi <balbi@ti.com>, + * Sebastian Andrzej Siewior <bigeasy@linutronix.de> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/pci.h> +#include <linux/platform_device.h> + +#include <linux/usb/otg.h> +#include <linux/usb/usb_phy_generic.h> + +#include "platform_data.h" + +/* FIXME define these in <linux/pci_ids.h> */ +#define PCI_VENDOR_ID_SYNOPSYS 0x16c3 +#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd +#define PCI_DEVICE_ID_INTEL_BYT 0x0f37 +#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e +#define PCI_DEVICE_ID_INTEL_BSW 0x22B7 + +struct dwc3_pci { + struct device *dev; + struct platform_device *dwc3; + struct platform_device *usb2_phy; + struct platform_device *usb3_phy; +}; + +static int dwc3_pci_register_phys(struct dwc3_pci *glue) +{ + struct usb_phy_generic_platform_data pdata; + struct platform_device *pdev; + int ret; + + memset(&pdata, 0x00, sizeof(pdata)); + + pdev = platform_device_alloc("usb_phy_generic", 0); + if (!pdev) + return -ENOMEM; + + glue->usb2_phy = pdev; + pdata.type = USB_PHY_TYPE_USB2; + pdata.gpio_reset = -1; + + ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata)); + if (ret) + goto err1; + + pdev = platform_device_alloc("usb_phy_generic", 1); + if (!pdev) { + ret = -ENOMEM; + goto err1; + } + + glue->usb3_phy = pdev; + pdata.type = USB_PHY_TYPE_USB3; + + ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata)); + if (ret) + goto err2; + + ret = platform_device_add(glue->usb2_phy); + if (ret) + goto err2; + + ret = platform_device_add(glue->usb3_phy); + if (ret) + goto err3; + + return 0; + +err3: + platform_device_del(glue->usb2_phy); + +err2: + platform_device_put(glue->usb3_phy); + +err1: + platform_device_put(glue->usb2_phy); + + return ret; +} + +static int dwc3_pci_probe(struct pci_dev *pci, + const struct pci_device_id *id) +{ + struct resource res[2]; + struct platform_device *dwc3; + struct dwc3_pci *glue; + int ret; + struct device *dev = &pci->dev; + struct dwc3_platform_data dwc3_pdata; + + memset(&dwc3_pdata, 0x00, sizeof(dwc3_pdata)); + + glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); + if (!glue) + return -ENOMEM; + + glue->dev = dev; + + ret = pcim_enable_device(pci); + if (ret) { + dev_err(dev, "failed to enable pci device\n"); + return -ENODEV; + } + + pci_set_master(pci); + + ret = dwc3_pci_register_phys(glue); + if (ret) { + dev_err(dev, "couldn't register PHYs\n"); + return ret; + } + + dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); + if (!dwc3) { + dev_err(dev, "couldn't allocate dwc3 device\n"); + return -ENOMEM; + } + + memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); + + res[0].start = pci_resource_start(pci, 0); + res[0].end = pci_resource_end(pci, 0); + res[0].name = "dwc_usb3"; + res[0].flags = IORESOURCE_MEM; + + res[1].start = pci->irq; + res[1].name = "dwc_usb3"; + res[1].flags = IORESOURCE_IRQ; + + if (pci->vendor == PCI_VENDOR_ID_AMD && + pci->device == PCI_DEVICE_ID_AMD_NL_USB) { + dwc3_pdata.has_lpm_erratum = true; + dwc3_pdata.lpm_nyet_threshold = 0xf; + + dwc3_pdata.u2exit_lfps_quirk = true; + dwc3_pdata.u2ss_inp3_quirk = true; + dwc3_pdata.req_p1p2p3_quirk = true; + dwc3_pdata.del_p1p2p3_quirk = true; + dwc3_pdata.del_phy_power_chg_quirk = true; + dwc3_pdata.lfps_filter_quirk = true; + dwc3_pdata.rx_detect_poll_quirk = true; + + dwc3_pdata.tx_de_emphasis_quirk = true; + dwc3_pdata.tx_de_emphasis = 1; + + /* + * FIXME these quirks should be removed when AMD NL + * taps out + */ + dwc3_pdata.disable_scramble_quirk = true; + dwc3_pdata.dis_u3_susphy_quirk = true; + dwc3_pdata.dis_u2_susphy_quirk = true; + } + + ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); + if (ret) { + dev_err(dev, "couldn't add resources to dwc3 device\n"); + return ret; + } + + pci_set_drvdata(pci, glue); + + ret = platform_device_add_data(dwc3, &dwc3_pdata, sizeof(dwc3_pdata)); + if (ret) + goto err3; + + dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); + + dwc3->dev.dma_mask = dev->dma_mask; + dwc3->dev.dma_parms = dev->dma_parms; + dwc3->dev.parent = dev; + glue->dwc3 = dwc3; + + ret = platform_device_add(dwc3); + if (ret) { + dev_err(dev, "failed to register dwc3 device\n"); + goto err3; + } + + return 0; + +err3: + platform_device_put(dwc3); + return ret; +} + +static void dwc3_pci_remove(struct pci_dev *pci) +{ + struct dwc3_pci *glue = pci_get_drvdata(pci); + + platform_device_unregister(glue->dwc3); + platform_device_unregister(glue->usb2_phy); + platform_device_unregister(glue->usb3_phy); +} + +static const struct pci_device_id dwc3_pci_id_table[] = { + { + PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, + PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), + }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, + { } /* Terminating Entry */ +}; +MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); + +#ifdef CONFIG_PM_SLEEP +static int dwc3_pci_suspend(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + + pci_disable_device(pci); + + return 0; +} + +static int dwc3_pci_resume(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + int ret; + + ret = pci_enable_device(pci); + if (ret) { + dev_err(dev, "can't re-enable device --> %d\n", ret); + return ret; + } + + pci_set_master(pci); + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +static const struct dev_pm_ops dwc3_pci_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) +}; + +static struct pci_driver dwc3_pci_driver = { + .name = "dwc3-pci", + .id_table = dwc3_pci_id_table, + .probe = dwc3_pci_probe, + .remove = dwc3_pci_remove, + .driver = { + .pm = &dwc3_pci_dev_pm_ops, + }, +}; + +MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); + +module_pci_driver(dwc3_pci_driver); |