Alexander Shishkin | eb70e5a | 2012-05-11 17:25:54 +0300 | [diff] [blame] | 1 | /* |
| 2 | * host.c - ChipIdea USB host controller driver |
| 3 | * |
| 4 | * Copyright (c) 2012 Intel Corporation |
| 5 | * |
| 6 | * Author: Alexander Shishkin |
| 7 | * |
| 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 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 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. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
| 21 | |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/usb.h> |
| 24 | #include <linux/usb/hcd.h> |
| 25 | #include <linux/usb/chipidea.h> |
| 26 | |
| 27 | #define CHIPIDEA_EHCI |
| 28 | #include "../host/ehci-hcd.c" |
| 29 | |
| 30 | #include "ci.h" |
| 31 | #include "bits.h" |
| 32 | #include "host.h" |
| 33 | |
| 34 | static int ci_ehci_setup(struct usb_hcd *hcd) |
| 35 | { |
| 36 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 37 | int ret; |
| 38 | |
| 39 | hcd->has_tt = 1; |
| 40 | |
| 41 | ret = ehci_setup(hcd); |
| 42 | if (ret) |
| 43 | return ret; |
| 44 | |
| 45 | ehci_port_power(ehci, 0); |
| 46 | |
| 47 | return ret; |
| 48 | } |
| 49 | |
| 50 | static const struct hc_driver ci_ehci_hc_driver = { |
| 51 | .description = "ehci_hcd", |
| 52 | .product_desc = "ChipIdea HDRC EHCI", |
| 53 | .hcd_priv_size = sizeof(struct ehci_hcd), |
| 54 | |
| 55 | /* |
| 56 | * generic hardware linkage |
| 57 | */ |
| 58 | .irq = ehci_irq, |
| 59 | .flags = HCD_MEMORY | HCD_USB2, |
| 60 | |
| 61 | /* |
| 62 | * basic lifecycle operations |
| 63 | */ |
| 64 | .reset = ci_ehci_setup, |
| 65 | .start = ehci_run, |
| 66 | .stop = ehci_stop, |
| 67 | .shutdown = ehci_shutdown, |
| 68 | |
| 69 | /* |
| 70 | * managing i/o requests and associated device resources |
| 71 | */ |
| 72 | .urb_enqueue = ehci_urb_enqueue, |
| 73 | .urb_dequeue = ehci_urb_dequeue, |
| 74 | .endpoint_disable = ehci_endpoint_disable, |
| 75 | .endpoint_reset = ehci_endpoint_reset, |
| 76 | |
| 77 | /* |
| 78 | * scheduling support |
| 79 | */ |
| 80 | .get_frame_number = ehci_get_frame, |
| 81 | |
| 82 | /* |
| 83 | * root hub support |
| 84 | */ |
| 85 | .hub_status_data = ehci_hub_status_data, |
| 86 | .hub_control = ehci_hub_control, |
| 87 | .bus_suspend = ehci_bus_suspend, |
| 88 | .bus_resume = ehci_bus_resume, |
| 89 | .relinquish_port = ehci_relinquish_port, |
| 90 | .port_handed_over = ehci_port_handed_over, |
| 91 | |
| 92 | .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, |
| 93 | }; |
| 94 | |
| 95 | static irqreturn_t host_irq(struct ci13xxx *ci) |
| 96 | { |
| 97 | return usb_hcd_irq(ci->irq, ci->hcd); |
| 98 | } |
| 99 | |
| 100 | static int host_start(struct ci13xxx *ci) |
| 101 | { |
| 102 | struct usb_hcd *hcd; |
| 103 | struct ehci_hcd *ehci; |
| 104 | int ret; |
| 105 | |
| 106 | if (usb_disabled()) |
| 107 | return -ENODEV; |
| 108 | |
| 109 | hcd = usb_create_hcd(&ci_ehci_hc_driver, ci->dev, dev_name(ci->dev)); |
| 110 | if (!hcd) |
| 111 | return -ENOMEM; |
| 112 | |
| 113 | dev_set_drvdata(ci->dev, ci); |
| 114 | hcd->rsrc_start = ci->hw_bank.phys; |
| 115 | hcd->rsrc_len = ci->hw_bank.size; |
| 116 | hcd->regs = ci->hw_bank.abs; |
| 117 | hcd->has_tt = 1; |
| 118 | |
Alexander Shishkin | bd84198 | 2012-05-11 17:25:55 +0300 | [diff] [blame] | 119 | hcd->power_budget = ci->udc_driver->power_budget; |
| 120 | |
Alexander Shishkin | eb70e5a | 2012-05-11 17:25:54 +0300 | [diff] [blame] | 121 | ehci = hcd_to_ehci(hcd); |
| 122 | ehci->caps = ci->hw_bank.cap; |
| 123 | ehci->has_hostpc = ci->hw_bank.lpm; |
| 124 | |
| 125 | ret = usb_add_hcd(hcd, 0, 0); |
| 126 | if (ret) |
Marek Vasut | a756186 | 2012-05-15 06:10:21 +0200 | [diff] [blame] | 127 | usb_put_hcd(hcd); |
Alexander Shishkin | eb70e5a | 2012-05-11 17:25:54 +0300 | [diff] [blame] | 128 | else |
| 129 | ci->hcd = hcd; |
| 130 | |
| 131 | return ret; |
| 132 | } |
| 133 | |
| 134 | static void host_stop(struct ci13xxx *ci) |
| 135 | { |
| 136 | struct usb_hcd *hcd = ci->hcd; |
| 137 | |
| 138 | usb_remove_hcd(hcd); |
| 139 | usb_put_hcd(hcd); |
| 140 | } |
| 141 | |
| 142 | int ci_hdrc_host_init(struct ci13xxx *ci) |
| 143 | { |
| 144 | struct ci_role_driver *rdrv; |
| 145 | |
| 146 | if (!hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_HC)) |
| 147 | return -ENXIO; |
| 148 | |
| 149 | rdrv = devm_kzalloc(ci->dev, sizeof(struct ci_role_driver), GFP_KERNEL); |
| 150 | if (!rdrv) |
| 151 | return -ENOMEM; |
| 152 | |
| 153 | rdrv->start = host_start; |
| 154 | rdrv->stop = host_stop; |
| 155 | rdrv->irq = host_irq; |
| 156 | rdrv->name = "host"; |
| 157 | ci->roles[CI_ROLE_HOST] = rdrv; |
| 158 | |
| 159 | return 0; |
| 160 | } |