Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 1 | /** |
| 2 | * host.c - DesignWare USB3 DRD Controller Host Glue |
| 3 | * |
| 4 | * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com |
| 5 | * |
| 6 | * Authors: Felipe Balbi <balbi@ti.com>, |
| 7 | * |
Felipe Balbi | 5945f78 | 2013-06-30 14:15:11 +0300 | [diff] [blame] | 8 | * This program is free software: you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 of |
| 10 | * the License as published by the Free Software Foundation. |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 11 | * |
Felipe Balbi | 5945f78 | 2013-06-30 14:15:11 +0300 | [diff] [blame] | 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 16 | */ |
| 17 | |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 18 | #include <linux/platform_device.h> |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 19 | |
| 20 | #include "core.h" |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 21 | |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 22 | int dwc3_host_init(struct dwc3 *dwc) |
| 23 | { |
Heikki Krogerus | 95b57df | 2016-06-21 10:58:09 +0300 | [diff] [blame] | 24 | struct property_entry props[2]; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 25 | struct platform_device *xhci; |
Roger Quadros | 322832f | 2016-06-30 14:54:17 +0300 | [diff] [blame] | 26 | int ret, irq; |
| 27 | struct resource *res; |
| 28 | struct platform_device *dwc3_pdev = to_platform_device(dwc->dev); |
| 29 | |
| 30 | irq = platform_get_irq_byname(dwc3_pdev, "host"); |
| 31 | if (irq == -EPROBE_DEFER) |
| 32 | return irq; |
| 33 | |
| 34 | if (irq <= 0) { |
| 35 | irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3"); |
| 36 | if (irq == -EPROBE_DEFER) |
| 37 | return irq; |
| 38 | |
| 39 | if (irq <= 0) { |
| 40 | irq = platform_get_irq(dwc3_pdev, 0); |
| 41 | if (irq <= 0) { |
| 42 | if (irq != -EPROBE_DEFER) { |
| 43 | dev_err(dwc->dev, |
| 44 | "missing host IRQ\n"); |
| 45 | } |
| 46 | if (!irq) |
| 47 | irq = -EINVAL; |
| 48 | return irq; |
| 49 | } else { |
| 50 | res = platform_get_resource(dwc3_pdev, |
| 51 | IORESOURCE_IRQ, 0); |
| 52 | } |
| 53 | } else { |
| 54 | res = platform_get_resource_byname(dwc3_pdev, |
| 55 | IORESOURCE_IRQ, |
| 56 | "dwc_usb3"); |
| 57 | } |
| 58 | |
| 59 | } else { |
| 60 | res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, |
| 61 | "host"); |
| 62 | } |
| 63 | |
| 64 | dwc->xhci_resources[1].start = irq; |
| 65 | dwc->xhci_resources[1].end = irq; |
| 66 | dwc->xhci_resources[1].flags = res->flags; |
| 67 | dwc->xhci_resources[1].name = res->name; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 68 | |
Vivek Gautam | 52758bc | 2013-01-25 16:52:02 +0530 | [diff] [blame] | 69 | xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 70 | if (!xhci) { |
| 71 | dev_err(dwc->dev, "couldn't allocate xHCI device\n"); |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 72 | return -ENOMEM; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask); |
| 76 | |
| 77 | xhci->dev.parent = dwc->dev; |
| 78 | xhci->dev.dma_mask = dwc->dev->dma_mask; |
| 79 | xhci->dev.dma_parms = dwc->dev->dma_parms; |
| 80 | |
| 81 | dwc->xhci = xhci; |
| 82 | |
Ido Shayevitz | 51249dc | 2012-04-24 14:18:39 +0300 | [diff] [blame] | 83 | ret = platform_device_add_resources(xhci, dwc->xhci_resources, |
| 84 | DWC3_XHCI_RESOURCES_NUM); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 85 | if (ret) { |
| 86 | dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); |
| 87 | goto err1; |
| 88 | } |
| 89 | |
Heikki Krogerus | 95b57df | 2016-06-21 10:58:09 +0300 | [diff] [blame] | 90 | memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props)); |
Pratyush Anand | b2f463e1 | 2014-07-04 17:01:26 +0300 | [diff] [blame] | 91 | |
Heikki Krogerus | 95b57df | 2016-06-21 10:58:09 +0300 | [diff] [blame] | 92 | if (dwc->usb3_lpm_capable) { |
| 93 | props[0].name = "usb3-lpm-capable"; |
| 94 | ret = platform_device_add_properties(xhci, props); |
| 95 | if (ret) { |
| 96 | dev_err(dwc->dev, "failed to add properties to xHCI\n"); |
| 97 | goto err1; |
| 98 | } |
Pratyush Anand | b2f463e1 | 2014-07-04 17:01:26 +0300 | [diff] [blame] | 99 | } |
| 100 | |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 101 | phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy", |
| 102 | dev_name(&xhci->dev)); |
| 103 | phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy", |
| 104 | dev_name(&xhci->dev)); |
| 105 | |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 106 | ret = platform_device_add(xhci); |
| 107 | if (ret) { |
| 108 | dev_err(dwc->dev, "failed to register xHCI device\n"); |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 109 | goto err2; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | return 0; |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 113 | err2: |
| 114 | phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", |
| 115 | dev_name(&xhci->dev)); |
| 116 | phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", |
| 117 | dev_name(&xhci->dev)); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 118 | err1: |
| 119 | platform_device_put(xhci); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 120 | return ret; |
| 121 | } |
| 122 | |
| 123 | void dwc3_host_exit(struct dwc3 *dwc) |
| 124 | { |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 125 | phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", |
| 126 | dev_name(&dwc->xhci->dev)); |
| 127 | phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", |
| 128 | dev_name(&dwc->xhci->dev)); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 129 | platform_device_unregister(dwc->xhci); |
| 130 | } |