| /** |
| * 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/gpio/consumer.h> |
| #include <linux/acpi.h> |
| |
| #include "platform_data.h" |
| |
| #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd |
| #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce |
| #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf |
| #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 |
| #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e |
| #define PCI_DEVICE_ID_INTEL_BSW 0x22b7 |
| #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 |
| #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 |
| |
| static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; |
| static const struct acpi_gpio_params cs_gpios = { 1, 0, false }; |
| |
| static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = { |
| { "reset-gpios", &reset_gpios, 1 }, |
| { "cs-gpios", &cs_gpios, 1 }, |
| { }, |
| }; |
| |
| static int dwc3_pci_quirks(struct pci_dev *pdev) |
| { |
| if (pdev->vendor == PCI_VENDOR_ID_AMD && |
| pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { |
| struct dwc3_platform_data pdata; |
| |
| memset(&pdata, 0, sizeof(pdata)); |
| |
| pdata.has_lpm_erratum = true; |
| pdata.lpm_nyet_threshold = 0xf; |
| |
| pdata.u2exit_lfps_quirk = true; |
| pdata.u2ss_inp3_quirk = true; |
| pdata.req_p1p2p3_quirk = true; |
| pdata.del_p1p2p3_quirk = true; |
| pdata.del_phy_power_chg_quirk = true; |
| pdata.lfps_filter_quirk = true; |
| pdata.rx_detect_poll_quirk = true; |
| |
| pdata.tx_de_emphasis_quirk = true; |
| pdata.tx_de_emphasis = 1; |
| |
| /* |
| * FIXME these quirks should be removed when AMD NL |
| * taps out |
| */ |
| pdata.disable_scramble_quirk = true; |
| pdata.dis_u3_susphy_quirk = true; |
| pdata.dis_u2_susphy_quirk = true; |
| |
| return platform_device_add_data(pci_get_drvdata(pdev), &pdata, |
| sizeof(pdata)); |
| } |
| |
| if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
| pdev->device == PCI_DEVICE_ID_INTEL_BYT) { |
| struct gpio_desc *gpio; |
| |
| acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev), |
| acpi_dwc3_byt_gpios); |
| |
| /* |
| * These GPIOs will turn on the USB2 PHY. Note that we have to |
| * put the gpio descriptors again here because the phy driver |
| * might want to grab them, too. |
| */ |
| gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); |
| if (IS_ERR(gpio)) |
| return PTR_ERR(gpio); |
| |
| gpiod_set_value_cansleep(gpio, 1); |
| gpiod_put(gpio); |
| |
| gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); |
| if (IS_ERR(gpio)) |
| return PTR_ERR(gpio); |
| |
| if (gpio) { |
| gpiod_set_value_cansleep(gpio, 1); |
| gpiod_put(gpio); |
| usleep_range(10000, 11000); |
| } |
| } |
| |
| if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS && |
| (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 || |
| pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI || |
| pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) { |
| |
| struct dwc3_platform_data pdata; |
| |
| memset(&pdata, 0, sizeof(pdata)); |
| pdata.usb3_lpm_capable = true; |
| pdata.has_lpm_erratum = true; |
| pdata.dis_enblslpm_quirk = true; |
| |
| return platform_device_add_data(pci_get_drvdata(pdev), &pdata, |
| sizeof(pdata)); |
| } |
| |
| return 0; |
| } |
| |
| static int dwc3_pci_probe(struct pci_dev *pci, |
| const struct pci_device_id *id) |
| { |
| struct resource res[2]; |
| struct platform_device *dwc3; |
| int ret; |
| struct device *dev = &pci->dev; |
| |
| ret = pcim_enable_device(pci); |
| if (ret) { |
| dev_err(dev, "failed to enable pci device\n"); |
| return -ENODEV; |
| } |
| |
| pci_set_master(pci); |
| |
| 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; |
| |
| 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, dwc3); |
| ret = dwc3_pci_quirks(pci); |
| if (ret) |
| goto err; |
| |
| dwc3->dev.parent = dev; |
| ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev)); |
| |
| ret = platform_device_add(dwc3); |
| if (ret) { |
| dev_err(dev, "failed to register dwc3 device\n"); |
| goto err; |
| } |
| |
| return 0; |
| err: |
| platform_device_put(dwc3); |
| return ret; |
| } |
| |
| static void dwc3_pci_remove(struct pci_dev *pci) |
| { |
| acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev)); |
| platform_device_unregister(pci_get_drvdata(pci)); |
| } |
| |
| 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_SYNOPSYS, |
| PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI), |
| }, |
| { |
| PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, |
| PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31), |
| }, |
| { 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_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, |
| { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, |
| { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, |
| { } /* Terminating Entry */ |
| }; |
| MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); |
| |
| static struct pci_driver dwc3_pci_driver = { |
| .name = "dwc3-pci", |
| .id_table = dwc3_pci_id_table, |
| .probe = dwc3_pci_probe, |
| .remove = dwc3_pci_remove, |
| }; |
| |
| MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); |
| |
| module_pci_driver(dwc3_pci_driver); |