170 lines
4.7 KiB
C
170 lines
4.7 KiB
C
/*
|
|
* pci.c - DesignWare HS OTG Controller PCI driver
|
|
*
|
|
* Copyright (C) 2004-2013 Synopsys, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The names of the above-listed copyright holders may not be used
|
|
* to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* ALTERNATIVELY, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") as published by the Free Software
|
|
* Foundation; either version 2 of the License, or (at your option) any
|
|
* later version.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
|
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Provides the initialization and cleanup entry points for the DWC_otg PCI
|
|
* driver
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/io.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/usb.h>
|
|
|
|
#include <linux/usb/hcd.h>
|
|
#include <linux/usb/ch11.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/usb/usb_phy_generic.h>
|
|
|
|
#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
|
|
|
|
static const char dwc2_driver_name[] = "dwc2-pci";
|
|
|
|
struct dwc2_pci_glue {
|
|
struct platform_device *dwc2;
|
|
struct platform_device *phy;
|
|
};
|
|
|
|
static void dwc2_pci_remove(struct pci_dev *pci)
|
|
{
|
|
struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
|
|
|
|
platform_device_unregister(glue->dwc2);
|
|
usb_phy_generic_unregister(glue->phy);
|
|
kfree(glue);
|
|
pci_set_drvdata(pci, NULL);
|
|
}
|
|
|
|
static int dwc2_pci_probe(struct pci_dev *pci,
|
|
const struct pci_device_id *id)
|
|
{
|
|
struct resource res[2];
|
|
struct platform_device *dwc2;
|
|
struct platform_device *phy;
|
|
int ret;
|
|
struct device *dev = &pci->dev;
|
|
struct dwc2_pci_glue *glue;
|
|
|
|
ret = pcim_enable_device(pci);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable pci device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
pci_set_master(pci);
|
|
|
|
dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
|
|
if (!dwc2) {
|
|
dev_err(dev, "couldn't allocate dwc2 device\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
|
|
|
|
res[0].start = pci_resource_start(pci, 0);
|
|
res[0].end = pci_resource_end(pci, 0);
|
|
res[0].name = "dwc2";
|
|
res[0].flags = IORESOURCE_MEM;
|
|
|
|
res[1].start = pci->irq;
|
|
res[1].name = "dwc2";
|
|
res[1].flags = IORESOURCE_IRQ;
|
|
|
|
ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
|
|
if (ret) {
|
|
dev_err(dev, "couldn't add resources to dwc2 device\n");
|
|
return ret;
|
|
}
|
|
|
|
dwc2->dev.parent = dev;
|
|
|
|
phy = usb_phy_generic_register();
|
|
if (IS_ERR(phy)) {
|
|
dev_err(dev, "error registering generic PHY (%ld)\n",
|
|
PTR_ERR(phy));
|
|
return PTR_ERR(phy);
|
|
}
|
|
|
|
ret = platform_device_add(dwc2);
|
|
if (ret) {
|
|
dev_err(dev, "failed to register dwc2 device\n");
|
|
goto err;
|
|
}
|
|
|
|
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
|
|
if (!glue)
|
|
return -ENOMEM;
|
|
|
|
glue->phy = phy;
|
|
glue->dwc2 = dwc2;
|
|
pci_set_drvdata(pci, glue);
|
|
|
|
return 0;
|
|
err:
|
|
usb_phy_generic_unregister(phy);
|
|
platform_device_put(dwc2);
|
|
return ret;
|
|
}
|
|
|
|
static const struct pci_device_id dwc2_pci_ids[] = {
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
|
|
PCI_DEVICE_ID_STMICRO_USB_OTG),
|
|
},
|
|
{ /* end: all zeroes */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
|
|
|
|
static struct pci_driver dwc2_pci_driver = {
|
|
.name = dwc2_driver_name,
|
|
.id_table = dwc2_pci_ids,
|
|
.probe = dwc2_pci_probe,
|
|
.remove = dwc2_pci_remove,
|
|
};
|
|
|
|
module_pci_driver(dwc2_pci_driver);
|
|
|
|
MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
|
|
MODULE_AUTHOR("Synopsys, Inc.");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|