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include:spf-0014ca01.pphosted.com include:spf.protection.outlook.com include:auth.msgapp.com include:spf.mandrillapp.com ~all X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-11-18_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_check_notspam policy=outbound_check score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=827 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1811180097 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Patch adds PCI specific glue driver that creates and registers in-system cdns-usb3 platform device. Thanks to that we will be able to use the cdns-usb3 platform driver for USBSS-DEV controller build on PCI board Signed-off-by: Pawel Laszczak --- drivers/usb/Kconfig | 2 + drivers/usb/Makefile | 2 + drivers/usb/cdns3/Kconfig | 24 +++++ drivers/usb/cdns3/Makefile | 3 + drivers/usb/cdns3/cdns3-pci-wrap.c | 157 +++++++++++++++++++++++++++++ 5 files changed, 188 insertions(+) create mode 100644 drivers/usb/cdns3/Kconfig create mode 100644 drivers/usb/cdns3/Makefile create mode 100644 drivers/usb/cdns3/cdns3-pci-wrap.c diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 987fc5ba6321..5f9334019d04 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -112,6 +112,8 @@ source "drivers/usb/usbip/Kconfig" endif +source "drivers/usb/cdns3/Kconfig" + source "drivers/usb/mtu3/Kconfig" source "drivers/usb/musb/Kconfig" diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 7d1b8c82b208..82093a60ea2c 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -8,6 +8,8 @@ obj-$(CONFIG_USB) += core/ obj-$(CONFIG_USB_SUPPORT) += phy/ +obj-$(CONFIG_USB_CDNS3) += cdns3/ + obj-$(CONFIG_USB_DWC3) += dwc3/ obj-$(CONFIG_USB_DWC2) += dwc2/ obj-$(CONFIG_USB_ISP1760) += isp1760/ diff --git a/drivers/usb/cdns3/Kconfig b/drivers/usb/cdns3/Kconfig new file mode 100644 index 000000000000..eb22a8692991 --- /dev/null +++ b/drivers/usb/cdns3/Kconfig @@ -0,0 +1,24 @@ +config USB_CDNS3 + tristate "Cadence USB3 Dual-Role Controller" + depends on USB_SUPPORT && (USB || USB_GADGET) && HAS_DMA + help + Say Y here if your system has a cadence USB3 dual-role controller. + It supports: dual-role switch, Host-only, and Peripheral-only. + + If you choose to build this driver is a dynamically linked + module, the module will be called cdns3.ko. + +if USB_CDNS3 + +config USB_CDNS3_PCI_WRAP + tristate "PCIe-based Platforms" + depends on USB_PCI && ACPI + default USB_CDNS3 + help + If you're using the USBSS Core IP with a PCIe, please say + 'Y' or 'M' here. + + If you choose to build this driver as module it will + be dynamically linked and module will be called cdns3-pci.ko + +endif diff --git a/drivers/usb/cdns3/Makefile b/drivers/usb/cdns3/Makefile new file mode 100644 index 000000000000..dcdd62003c6a --- /dev/null +++ b/drivers/usb/cdns3/Makefile @@ -0,0 +1,3 @@ +obj-$(CONFIG_USB_CDNS3_PCI_WRAP) += cdns3-pci.o + +cdns3-pci-y := cdns3-pci-wrap.o diff --git a/drivers/usb/cdns3/cdns3-pci-wrap.c b/drivers/usb/cdns3/cdns3-pci-wrap.c new file mode 100644 index 000000000000..d0a15cc0b738 --- /dev/null +++ b/drivers/usb/cdns3/cdns3-pci-wrap.c @@ -0,0 +1,157 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Cadence USBSS PCI Glue driver + * + * Copyright (C) 2018 Cadence. + * + * Author: Pawel Laszczak + */ + +#include +#include +#include +#include +#include +#include + +struct cdns3_wrap { + struct platform_device *plat_dev; + struct pci_dev *hg_dev; + struct resource dev_res[4]; +}; + +struct cdns3_wrap wrap; + +#define RES_IRQ_ID 0 +#define RES_HOST_ID 1 +#define RES_DEV_ID 2 +#define RES_DRD_ID 3 + +#define PCI_BAR_HOST 0 +#define PCI_BAR_DEV 2 +#define PCI_BAR_OTG 4 + +#define PCI_DEV_FN_HOST_DEVICE 0 +#define PCI_DEV_FN_OTG 1 + +#define PCI_DRIVER_NAME "cdns3-pci-usbss" +#define PLAT_DRIVER_NAME "cdns-usb3" + +#define CDNS_VENDOR_ID 0x17cd +#define CDNS_DEVICE_ID 0x0100 + +/** + * cdns3_pci_probe - Probe function for Cadence USB wrapper driver + * @pdev: platform device object + * @id: pci device id + * + * Returns 0 on success otherwise negative errno + */ +static int cdns3_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct platform_device_info plat_info; + struct cdns3_wrap *wrap; + struct resource *res; + int err; + + /* + * for GADGET/HOST PCI (devfn) function number is 0, + * for OTG PCI (devfn) function number is 1 + */ + if (!id || pdev->devfn != PCI_DEV_FN_HOST_DEVICE) + return -EINVAL; + + err = pcim_enable_device(pdev); + if (err) { + dev_err(&pdev->dev, "Enabling PCI device has failed %d\n", err); + return err; + } + + pci_set_master(pdev); + wrap = devm_kzalloc(&pdev->dev, sizeof(*wrap), GFP_KERNEL); + if (!wrap) { + dev_err(&pdev->dev, "Failed to load PCI module\n"); + return -ENOMEM; + } + + /* function 0: host(BAR_0) + device(BAR_1) + otg(BAR_2)). */ + memset(wrap->dev_res, 0x00, + sizeof(struct resource) * ARRAY_SIZE(wrap->dev_res)); + dev_dbg(&pdev->dev, "Initialize Device resources\n"); + res = wrap->dev_res; + + res[RES_DEV_ID].start = pci_resource_start(pdev, PCI_BAR_DEV); + res[RES_DEV_ID].end = pci_resource_end(pdev, PCI_BAR_DEV); + res[RES_DEV_ID].name = "cdns3-dev-regs"; + res[RES_DEV_ID].flags = IORESOURCE_MEM; + dev_dbg(&pdev->dev, "USBSS-DEV physical base addr: %pa\n", + &res[RES_DEV_ID].start); + + res[RES_HOST_ID].start = pci_resource_start(pdev, PCI_BAR_HOST); + res[RES_HOST_ID].end = pci_resource_end(pdev, PCI_BAR_HOST); + res[RES_HOST_ID].name = "cdns3-xhci-regs"; + res[RES_HOST_ID].flags = IORESOURCE_MEM; + dev_dbg(&pdev->dev, "USBSS-XHCI physical base addr: %pa\n", + &res[RES_HOST_ID].start); + + res[RES_DRD_ID].start = pci_resource_start(pdev, PCI_BAR_OTG); + res[RES_DRD_ID].end = pci_resource_end(pdev, PCI_BAR_OTG); + res[RES_DRD_ID].name = "cdns3-otg"; + res[RES_DRD_ID].flags = IORESOURCE_MEM; + dev_dbg(&pdev->dev, "USBSS-DRD physical base addr: %pa\n", + &res[RES_DRD_ID].start); + + /* Interrupt common for both device and XHCI */ + wrap->dev_res[RES_IRQ_ID].start = pdev->irq; + wrap->dev_res[RES_IRQ_ID].name = "cdns3-irq"; + wrap->dev_res[RES_IRQ_ID].flags = IORESOURCE_IRQ; + + /* set up platform device info */ + memset(&plat_info, 0, sizeof(plat_info)); + plat_info.parent = &pdev->dev; + plat_info.fwnode = pdev->dev.fwnode; + plat_info.name = PLAT_DRIVER_NAME; + plat_info.id = pdev->devfn; + plat_info.res = wrap->dev_res; + plat_info.num_res = ARRAY_SIZE(wrap->dev_res); + plat_info.dma_mask = pdev->dma_mask; + + /* register platform device */ + wrap->plat_dev = platform_device_register_full(&plat_info); + if (IS_ERR(wrap->plat_dev)) { + err = PTR_ERR(wrap->plat_dev); + return err; + } + + pci_set_drvdata(pdev, wrap); + + return err; +} + +void cdns3_pci_remove(struct pci_dev *pdev) +{ + struct cdns3_wrap *wrap = (struct cdns3_wrap *)pci_get_drvdata(pdev); + + platform_device_unregister(wrap->plat_dev); +} + +static const struct pci_device_id cdns3_pci_ids[] = { + { PCI_DEVICE(CDNS_VENDOR_ID, CDNS_DEVICE_ID), }, + { 0, } +}; + +static struct pci_driver cdns3_pci_driver = { + .name = PCI_DRIVER_NAME, + .id_table = cdns3_pci_ids, + .probe = cdns3_pci_probe, + .remove = cdns3_pci_remove, +}; + +module_pci_driver(cdns3_pci_driver); +MODULE_DEVICE_TABLE(pci, cdns3_pci_ids); + +MODULE_AUTHOR("Pawel Laszczak "); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Cadence USBSS PCI wrapperr"); + -- 2.17.1