2 * dwc3-pci.c - PCI Specific glue layer
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The names of the above-listed copyright holders may not be used
19 * to endorse or promote products derived from this software without
20 * specific prior written permission.
22 * ALTERNATIVELY, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2, as published by the Free
24 * Software Foundation.
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
28 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
30 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/kernel.h>
40 #include <linux/module.h>
41 #include <linux/slab.h>
42 #include <linux/pci.h>
43 #include <linux/platform_device.h>
45 #include <linux/usb/otg.h>
46 #include <linux/usb/nop-usb-xceiv.h>
50 /* FIXME define these in <linux/pci_ids.h> */
51 #define PCI_VENDOR_ID_SYNOPSYS 0x16c3
52 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
56 struct platform_device
*dwc3
;
57 struct platform_device
*usb2_phy
;
58 struct platform_device
*usb3_phy
;
61 static int dwc3_pci_register_phys(struct dwc3_pci
*glue
)
63 struct nop_usb_xceiv_platform_data pdata
;
64 struct platform_device
*pdev
;
67 memset(&pdata
, 0x00, sizeof(pdata
));
69 pdev
= platform_device_alloc("nop_usb_xceiv", 0);
73 glue
->usb2_phy
= pdev
;
74 pdata
.type
= USB_PHY_TYPE_USB2
;
76 ret
= platform_device_add_data(glue
->usb2_phy
, &pdata
, sizeof(pdata
));
80 pdev
= platform_device_alloc("nop_usb_xceiv", 1);
86 glue
->usb3_phy
= pdev
;
87 pdata
.type
= USB_PHY_TYPE_USB3
;
89 ret
= platform_device_add_data(glue
->usb3_phy
, &pdata
, sizeof(pdata
));
93 ret
= platform_device_add(glue
->usb2_phy
);
97 ret
= platform_device_add(glue
->usb3_phy
);
104 platform_device_del(glue
->usb2_phy
);
107 platform_device_put(glue
->usb3_phy
);
110 platform_device_put(glue
->usb2_phy
);
115 static int dwc3_pci_probe(struct pci_dev
*pci
,
116 const struct pci_device_id
*id
)
118 struct resource res
[2];
119 struct platform_device
*dwc3
;
120 struct dwc3_pci
*glue
;
122 struct device
*dev
= &pci
->dev
;
124 glue
= devm_kzalloc(dev
, sizeof(*glue
), GFP_KERNEL
);
126 dev_err(dev
, "not enough memory\n");
132 ret
= pci_enable_device(pci
);
134 dev_err(dev
, "failed to enable pci device\n");
138 pci_set_power_state(pci
, PCI_D0
);
141 ret
= dwc3_pci_register_phys(glue
);
143 dev_err(dev
, "couldn't register PHYs\n");
147 dwc3
= platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO
);
149 dev_err(dev
, "couldn't allocate dwc3 device\n");
154 memset(res
, 0x00, sizeof(struct resource
) * ARRAY_SIZE(res
));
156 res
[0].start
= pci_resource_start(pci
, 0);
157 res
[0].end
= pci_resource_end(pci
, 0);
158 res
[0].name
= "dwc_usb3";
159 res
[0].flags
= IORESOURCE_MEM
;
161 res
[1].start
= pci
->irq
;
162 res
[1].name
= "dwc_usb3";
163 res
[1].flags
= IORESOURCE_IRQ
;
165 ret
= platform_device_add_resources(dwc3
, res
, ARRAY_SIZE(res
));
167 dev_err(dev
, "couldn't add resources to dwc3 device\n");
171 pci_set_drvdata(pci
, glue
);
173 dma_set_coherent_mask(&dwc3
->dev
, dev
->coherent_dma_mask
);
175 dwc3
->dev
.dma_mask
= dev
->dma_mask
;
176 dwc3
->dev
.dma_parms
= dev
->dma_parms
;
177 dwc3
->dev
.parent
= dev
;
180 ret
= platform_device_add(dwc3
);
182 dev_err(dev
, "failed to register dwc3 device\n");
189 pci_set_drvdata(pci
, NULL
);
190 platform_device_put(dwc3
);
192 pci_disable_device(pci
);
197 static void dwc3_pci_remove(struct pci_dev
*pci
)
199 struct dwc3_pci
*glue
= pci_get_drvdata(pci
);
201 platform_device_unregister(glue
->usb2_phy
);
202 platform_device_unregister(glue
->usb3_phy
);
203 platform_device_unregister(glue
->dwc3
);
204 pci_set_drvdata(pci
, NULL
);
205 pci_disable_device(pci
);
208 static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table
) = {
210 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS
,
211 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3
),
213 { } /* Terminating Entry */
215 MODULE_DEVICE_TABLE(pci
, dwc3_pci_id_table
);
217 static struct pci_driver dwc3_pci_driver
= {
219 .id_table
= dwc3_pci_id_table
,
220 .probe
= dwc3_pci_probe
,
221 .remove
= dwc3_pci_remove
,
224 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
225 MODULE_LICENSE("Dual BSD/GPL");
226 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
228 module_pci_driver(dwc3_pci_driver
);