Commit | Line | Data |
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c256667f SH |
1 | /* |
2 | * MIPS CI13320A EHCI Host Controller driver | |
3 | * Based on "ehci-au1xxx.c" by K.Boge <karsten.boge@amd.com> | |
4 | * | |
5 | * Copyright (C) 2012 MIPS Technologies, Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | * 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 Foundation, | |
19 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
148e1134 | 22 | #include <linux/err.h> |
c256667f SH |
23 | #include <linux/platform_device.h> |
24 | ||
25 | static int ehci_sead3_setup(struct usb_hcd *hcd) | |
26 | { | |
27 | int ret; | |
28 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
29 | ||
30 | ehci->caps = hcd->regs + 0x100; | |
31 | ||
fdf6e639 SH |
32 | #ifdef __BIG_ENDIAN |
33 | ehci->big_endian_mmio = 1; | |
34 | ehci->big_endian_desc = 1; | |
35 | #endif | |
36 | ||
c256667f SH |
37 | ret = ehci_setup(hcd); |
38 | if (ret) | |
39 | return ret; | |
40 | ||
41 | ehci->need_io_watchdog = 0; | |
42 | ||
c256667f | 43 | /* Set burst length to 16 words. */ |
cc59c7a9 | 44 | ehci_writel(ehci, 0x1010, &ehci->regs->reserved1[1]); |
c256667f SH |
45 | |
46 | return ret; | |
47 | } | |
48 | ||
49 | const struct hc_driver ehci_sead3_hc_driver = { | |
50 | .description = hcd_name, | |
51 | .product_desc = "SEAD-3 EHCI", | |
52 | .hcd_priv_size = sizeof(struct ehci_hcd), | |
53 | ||
54 | /* | |
55 | * generic hardware linkage | |
56 | */ | |
57 | .irq = ehci_irq, | |
c04ee4b1 | 58 | .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, |
c256667f SH |
59 | |
60 | /* | |
61 | * basic lifecycle operations | |
62 | * | |
63 | */ | |
64 | .reset = ehci_sead3_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 int ehci_hcd_sead3_drv_probe(struct platform_device *pdev) | |
96 | { | |
97 | struct usb_hcd *hcd; | |
98 | struct resource *res; | |
99 | int ret; | |
100 | ||
101 | if (usb_disabled()) | |
102 | return -ENODEV; | |
103 | ||
104 | if (pdev->resource[1].flags != IORESOURCE_IRQ) { | |
105 | pr_debug("resource[1] is not IORESOURCE_IRQ"); | |
106 | return -ENOMEM; | |
107 | } | |
108 | hcd = usb_create_hcd(&ehci_sead3_hc_driver, &pdev->dev, "SEAD-3"); | |
109 | if (!hcd) | |
110 | return -ENOMEM; | |
111 | ||
112 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
148e1134 TR |
113 | hcd->regs = devm_ioremap_resource(&pdev->dev, res); |
114 | if (IS_ERR(hcd->regs)) { | |
115 | ret = PTR_ERR(hcd->regs); | |
6c40f5ee | 116 | goto err1; |
c256667f | 117 | } |
239ab7a4 VB |
118 | hcd->rsrc_start = res->start; |
119 | hcd->rsrc_len = resource_size(res); | |
c256667f SH |
120 | |
121 | /* Root hub has integrated TT. */ | |
122 | hcd->has_tt = 1; | |
123 | ||
124 | ret = usb_add_hcd(hcd, pdev->resource[1].start, | |
125 | IRQF_SHARED); | |
126 | if (ret == 0) { | |
127 | platform_set_drvdata(pdev, hcd); | |
3c9740a1 | 128 | device_wakeup_enable(hcd->self.controller); |
c256667f SH |
129 | return ret; |
130 | } | |
131 | ||
c256667f SH |
132 | err1: |
133 | usb_put_hcd(hcd); | |
134 | return ret; | |
135 | } | |
136 | ||
137 | static int ehci_hcd_sead3_drv_remove(struct platform_device *pdev) | |
138 | { | |
139 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | |
140 | ||
141 | usb_remove_hcd(hcd); | |
c256667f | 142 | usb_put_hcd(hcd); |
c256667f SH |
143 | |
144 | return 0; | |
145 | } | |
146 | ||
147 | #ifdef CONFIG_PM | |
148 | static int ehci_hcd_sead3_drv_suspend(struct device *dev) | |
149 | { | |
150 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
c5cf9212 | 151 | bool do_wakeup = device_may_wakeup(dev); |
c256667f | 152 | |
c5cf9212 | 153 | return ehci_suspend(hcd, do_wakeup); |
c256667f SH |
154 | } |
155 | ||
156 | static int ehci_hcd_sead3_drv_resume(struct device *dev) | |
157 | { | |
158 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
c256667f | 159 | |
c5cf9212 | 160 | ehci_resume(hcd, false); |
c256667f SH |
161 | return 0; |
162 | } | |
163 | ||
164 | static const struct dev_pm_ops sead3_ehci_pmops = { | |
165 | .suspend = ehci_hcd_sead3_drv_suspend, | |
166 | .resume = ehci_hcd_sead3_drv_resume, | |
167 | }; | |
168 | ||
169 | #define SEAD3_EHCI_PMOPS (&sead3_ehci_pmops) | |
170 | ||
171 | #else | |
172 | #define SEAD3_EHCI_PMOPS NULL | |
173 | #endif | |
174 | ||
175 | static struct platform_driver ehci_hcd_sead3_driver = { | |
176 | .probe = ehci_hcd_sead3_drv_probe, | |
177 | .remove = ehci_hcd_sead3_drv_remove, | |
178 | .shutdown = usb_hcd_platform_shutdown, | |
179 | .driver = { | |
180 | .name = "sead3-ehci", | |
c256667f SH |
181 | .pm = SEAD3_EHCI_PMOPS, |
182 | } | |
183 | }; | |
184 | ||
185 | MODULE_ALIAS("platform:sead3-ehci"); |