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 | 66fff14 | 2016-10-03 12:31:48 +0300 | [diff] [blame] | 22 | static int dwc3_host_get_irq(struct dwc3 *dwc) |
| 23 | { |
| 24 | struct platform_device *dwc3_pdev = to_platform_device(dwc->dev); |
| 25 | int irq; |
| 26 | |
| 27 | irq = platform_get_irq_byname(dwc3_pdev, "host"); |
| 28 | if (irq > 0) |
| 29 | goto out; |
| 30 | |
| 31 | if (irq == -EPROBE_DEFER) |
| 32 | goto out; |
| 33 | |
| 34 | irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3"); |
| 35 | if (irq > 0) |
| 36 | goto out; |
| 37 | |
| 38 | if (irq == -EPROBE_DEFER) |
| 39 | goto out; |
| 40 | |
| 41 | irq = platform_get_irq(dwc3_pdev, 0); |
| 42 | if (irq > 0) |
| 43 | goto out; |
| 44 | |
| 45 | if (irq != -EPROBE_DEFER) |
| 46 | dev_err(dwc->dev, "missing host IRQ\n"); |
| 47 | |
| 48 | if (!irq) |
| 49 | irq = -EINVAL; |
| 50 | |
| 51 | out: |
| 52 | return irq; |
| 53 | } |
| 54 | |
Mayank Rana | e27420f | 2017-10-10 15:44:19 -0700 | [diff] [blame] | 55 | #define NUMBER_OF_PROPS 4 |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 56 | int dwc3_host_init(struct dwc3 *dwc) |
| 57 | { |
Mayank Rana | e27420f | 2017-10-10 15:44:19 -0700 | [diff] [blame] | 58 | struct property_entry props[NUMBER_OF_PROPS]; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 59 | struct platform_device *xhci; |
Roger Quadros | 322832f | 2016-06-30 14:54:17 +0300 | [diff] [blame] | 60 | int ret, irq; |
| 61 | struct resource *res; |
| 62 | struct platform_device *dwc3_pdev = to_platform_device(dwc->dev); |
Felipe Balbi | ae3a3e2 | 2017-04-04 19:32:25 +0000 | [diff] [blame] | 63 | int prop_idx = 0; |
Mayank Rana | e27420f | 2017-10-10 15:44:19 -0700 | [diff] [blame] | 64 | struct property_entry imod_prop; |
Roger Quadros | 322832f | 2016-06-30 14:54:17 +0300 | [diff] [blame] | 65 | |
Felipe Balbi | 66fff14 | 2016-10-03 12:31:48 +0300 | [diff] [blame] | 66 | irq = dwc3_host_get_irq(dwc); |
| 67 | if (irq < 0) |
Roger Quadros | 322832f | 2016-06-30 14:54:17 +0300 | [diff] [blame] | 68 | return irq; |
| 69 | |
Felipe Balbi | 66fff14 | 2016-10-03 12:31:48 +0300 | [diff] [blame] | 70 | res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, "host"); |
| 71 | if (!res) |
Roger Quadros | 322832f | 2016-06-30 14:54:17 +0300 | [diff] [blame] | 72 | res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, |
Felipe Balbi | 66fff14 | 2016-10-03 12:31:48 +0300 | [diff] [blame] | 73 | "dwc_usb3"); |
| 74 | if (!res) |
| 75 | res = platform_get_resource(dwc3_pdev, IORESOURCE_IRQ, 0); |
| 76 | if (!res) |
| 77 | return -ENOMEM; |
Roger Quadros | 322832f | 2016-06-30 14:54:17 +0300 | [diff] [blame] | 78 | |
| 79 | dwc->xhci_resources[1].start = irq; |
| 80 | dwc->xhci_resources[1].end = irq; |
| 81 | dwc->xhci_resources[1].flags = res->flags; |
| 82 | dwc->xhci_resources[1].name = res->name; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 83 | |
Vivek Gautam | 52758bc | 2013-01-25 16:52:02 +0530 | [diff] [blame] | 84 | xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 85 | if (!xhci) { |
| 86 | dev_err(dwc->dev, "couldn't allocate xHCI device\n"); |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 87 | return -ENOMEM; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 88 | } |
| 89 | |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 90 | xhci->dev.parent = dwc->dev; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 91 | |
| 92 | dwc->xhci = xhci; |
| 93 | |
Ido Shayevitz | 51249dc | 2012-04-24 14:18:39 +0300 | [diff] [blame] | 94 | ret = platform_device_add_resources(xhci, dwc->xhci_resources, |
| 95 | DWC3_XHCI_RESOURCES_NUM); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 96 | if (ret) { |
| 97 | dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); |
| 98 | goto err1; |
| 99 | } |
| 100 | |
Heikki Krogerus | 95b57df | 2016-06-21 10:58:09 +0300 | [diff] [blame] | 101 | memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props)); |
Pratyush Anand | b2f463e | 2014-07-04 17:01:26 +0300 | [diff] [blame] | 102 | |
Felipe Balbi | ae3a3e2 | 2017-04-04 19:32:25 +0000 | [diff] [blame] | 103 | if (dwc->usb3_lpm_capable) |
| 104 | props[prop_idx++].name = "usb3-lpm-capable"; |
| 105 | |
Mayank Rana | e27420f | 2017-10-10 15:44:19 -0700 | [diff] [blame] | 106 | if (dwc->xhci_imod_value) { |
| 107 | imod_prop.name = "xhci-imod-value"; |
| 108 | imod_prop.length = sizeof(u32); |
| 109 | imod_prop.is_string = false; |
| 110 | imod_prop.is_array = false; |
| 111 | imod_prop.value.u32_data = dwc->xhci_imod_value; |
| 112 | props[prop_idx++] = imod_prop; |
| 113 | } |
| 114 | |
Felipe Balbi | ae3a3e2 | 2017-04-04 19:32:25 +0000 | [diff] [blame] | 115 | /** |
| 116 | * WORKAROUND: dwc3 revisions <=3.00a have a limitation |
| 117 | * where Port Disable command doesn't work. |
| 118 | * |
| 119 | * The suggested workaround is that we avoid Port Disable |
| 120 | * completely. |
| 121 | * |
| 122 | * This following flag tells XHCI to do just that. |
| 123 | */ |
| 124 | if (dwc->revision <= DWC3_REVISION_300A) |
| 125 | props[prop_idx++].name = "quirk-broken-port-ped"; |
| 126 | |
| 127 | if (prop_idx) { |
Heikki Krogerus | 95b57df | 2016-06-21 10:58:09 +0300 | [diff] [blame] | 128 | ret = platform_device_add_properties(xhci, props); |
| 129 | if (ret) { |
| 130 | dev_err(dwc->dev, "failed to add properties to xHCI\n"); |
| 131 | goto err1; |
| 132 | } |
Pratyush Anand | b2f463e | 2014-07-04 17:01:26 +0300 | [diff] [blame] | 133 | } |
| 134 | |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 135 | phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy", |
Arnd Bergmann | 42695fc | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 136 | dev_name(dwc->dev)); |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 137 | phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy", |
Arnd Bergmann | 42695fc | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 138 | dev_name(dwc->dev)); |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 139 | |
Mayank Rana | a75caa5 | 2017-10-10 11:45:13 -0700 | [diff] [blame] | 140 | ret = platform_device_add(xhci); |
| 141 | if (ret) { |
| 142 | dev_err(dwc->dev, "failed to register xHCI device\n"); |
| 143 | goto err1; |
| 144 | } |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 145 | |
| 146 | return 0; |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 147 | err1: |
| 148 | platform_device_put(xhci); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 149 | return ret; |
| 150 | } |
| 151 | |
| 152 | void dwc3_host_exit(struct dwc3 *dwc) |
| 153 | { |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 154 | phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", |
Arnd Bergmann | 42695fc | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 155 | dev_name(dwc->dev)); |
Heikki Krogerus | 08f871a | 2014-11-19 17:28:23 +0200 | [diff] [blame] | 156 | phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", |
Arnd Bergmann | 42695fc | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 157 | dev_name(dwc->dev)); |
Mayank Rana | a75caa5 | 2017-10-10 11:45:13 -0700 | [diff] [blame] | 158 | platform_device_unregister(dwc->xhci); |
Felipe Balbi | d07e881 | 2011-10-12 14:08:26 +0300 | [diff] [blame] | 159 | } |