projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 7733f6c3 PL |
1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* | |
| 3 | * Cadence USBSS DRD Driver - host side | |
| 4 | * | |
| 5 | * Copyright (C) 2018-2019 Cadence Design Systems. | |
| 6 | * Copyright (C) 2017-2018 NXP | |
| 7 | * | |
| 8 | * Authors: Peter Chen <peter.chen@nxp.com> | |
| 9 | * Pawel Laszczak <pawell@cadence.com> | |
| 10 | */ | |
| 11 | ||
| 12 | #include <linux/platform_device.h> | |
| 13 | #include "core.h" | |
| 14 | #include "drd.h" | |
| 5053691a | 15 | #include "host-export.h" |
| 7733f6c3 PL |
16 | |
| 17 | static int __cdns3_host_init(struct cdns3 *cdns) | |
| 18 | { | |
| 19 | struct platform_device *xhci; | |
| 20 | int ret; | |
| 21 | ||
| 22 | cdns3_drd_switch_host(cdns, 1); | |
| 23 | ||
| 24 | xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO); | |
| 25 | if (!xhci) { | |
| 26 | dev_err(cdns->dev, "couldn't allocate xHCI device\n"); | |
| 27 | return -ENOMEM; | |
| 28 | } | |
| 29 | ||
| 30 | xhci->dev.parent = cdns->dev; | |
| 31 | cdns->host_dev = xhci; | |
| 32 | ||
| 33 | ret = platform_device_add_resources(xhci, cdns->xhci_res, | |
| 34 | CDNS3_XHCI_RESOURCES_NUM); | |
| 35 | if (ret) { | |
| 36 | dev_err(cdns->dev, "couldn't add resources to xHCI device\n"); | |
| 37 | goto err1; | |
| 38 | } | |
| 39 | ||
| 40 | ret = platform_device_add(xhci); | |
| 41 | if (ret) { | |
| 42 | dev_err(cdns->dev, "failed to register xHCI device\n"); | |
| 43 | goto err1; | |
| 44 | } | |
| 45 | ||
| 46 | return 0; | |
| 47 | err1: | |
| 48 | platform_device_put(xhci); | |
| 49 | return ret; | |
| 50 | } | |
| 51 | ||
| 52 | static void cdns3_host_exit(struct cdns3 *cdns) | |
| 53 | { | |
| 54 | platform_device_unregister(cdns->host_dev); | |
| 55 | cdns->host_dev = NULL; | |
| 56 | cdns3_drd_switch_host(cdns, 0); | |
| 57 | } | |
| 58 | ||
| 59 | int cdns3_host_init(struct cdns3 *cdns) | |
| 60 | { | |
| 61 | struct cdns3_role_driver *rdrv; | |
| 62 | ||
| 63 | rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL); | |
| 64 | if (!rdrv) | |
| 65 | return -ENOMEM; | |
| 66 | ||
| 67 | rdrv->start = __cdns3_host_init; | |
| 68 | rdrv->stop = cdns3_host_exit; | |
| 69 | rdrv->state = CDNS3_ROLE_STATE_INACTIVE; | |
| 70 | rdrv->name = "host"; | |
| 71 | ||
| 72 | cdns->roles[USB_ROLE_HOST] = rdrv; | |
| 73 | ||
| 74 | return 0; | |
| 75 | } |