68907a7743
this patch adds basic PM support for the PCI glue layer. Signed-off-by: Felipe Balbi <balbi@ti.com>
264 lines
6.4 KiB
C
264 lines
6.4 KiB
C
/**
|
|
* dwc3-pci.c - PCI Specific glue layer
|
|
*
|
|
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
|
|
*
|
|
* Authors: Felipe Balbi <balbi@ti.com>,
|
|
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|
*
|
|
* 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") version 2, as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/usb/otg.h>
|
|
#include <linux/usb/nop-usb-xceiv.h>
|
|
|
|
/* FIXME define these in <linux/pci_ids.h> */
|
|
#define PCI_VENDOR_ID_SYNOPSYS 0x16c3
|
|
#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
|
|
|
|
struct dwc3_pci {
|
|
struct device *dev;
|
|
struct platform_device *dwc3;
|
|
struct platform_device *usb2_phy;
|
|
struct platform_device *usb3_phy;
|
|
};
|
|
|
|
static int dwc3_pci_register_phys(struct dwc3_pci *glue)
|
|
{
|
|
struct nop_usb_xceiv_platform_data pdata;
|
|
struct platform_device *pdev;
|
|
int ret;
|
|
|
|
memset(&pdata, 0x00, sizeof(pdata));
|
|
|
|
pdev = platform_device_alloc("nop_usb_xceiv", 0);
|
|
if (!pdev)
|
|
return -ENOMEM;
|
|
|
|
glue->usb2_phy = pdev;
|
|
pdata.type = USB_PHY_TYPE_USB2;
|
|
|
|
ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
|
|
if (ret)
|
|
goto err1;
|
|
|
|
pdev = platform_device_alloc("nop_usb_xceiv", 1);
|
|
if (!pdev) {
|
|
ret = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
glue->usb3_phy = pdev;
|
|
pdata.type = USB_PHY_TYPE_USB3;
|
|
|
|
ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
|
|
if (ret)
|
|
goto err2;
|
|
|
|
ret = platform_device_add(glue->usb2_phy);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
ret = platform_device_add(glue->usb3_phy);
|
|
if (ret)
|
|
goto err3;
|
|
|
|
return 0;
|
|
|
|
err3:
|
|
platform_device_del(glue->usb2_phy);
|
|
|
|
err2:
|
|
platform_device_put(glue->usb3_phy);
|
|
|
|
err1:
|
|
platform_device_put(glue->usb2_phy);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dwc3_pci_probe(struct pci_dev *pci,
|
|
const struct pci_device_id *id)
|
|
{
|
|
struct resource res[2];
|
|
struct platform_device *dwc3;
|
|
struct dwc3_pci *glue;
|
|
int ret = -ENOMEM;
|
|
struct device *dev = &pci->dev;
|
|
|
|
glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
|
|
if (!glue) {
|
|
dev_err(dev, "not enough memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
glue->dev = dev;
|
|
|
|
ret = pci_enable_device(pci);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable pci device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
pci_set_power_state(pci, PCI_D0);
|
|
pci_set_master(pci);
|
|
|
|
ret = dwc3_pci_register_phys(glue);
|
|
if (ret) {
|
|
dev_err(dev, "couldn't register PHYs\n");
|
|
return ret;
|
|
}
|
|
|
|
dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
|
|
if (!dwc3) {
|
|
dev_err(dev, "couldn't allocate dwc3 device\n");
|
|
ret = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
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 = "dwc_usb3";
|
|
res[0].flags = IORESOURCE_MEM;
|
|
|
|
res[1].start = pci->irq;
|
|
res[1].name = "dwc_usb3";
|
|
res[1].flags = IORESOURCE_IRQ;
|
|
|
|
ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
|
|
if (ret) {
|
|
dev_err(dev, "couldn't add resources to dwc3 device\n");
|
|
goto err1;
|
|
}
|
|
|
|
pci_set_drvdata(pci, glue);
|
|
|
|
dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
|
|
|
|
dwc3->dev.dma_mask = dev->dma_mask;
|
|
dwc3->dev.dma_parms = dev->dma_parms;
|
|
dwc3->dev.parent = dev;
|
|
glue->dwc3 = dwc3;
|
|
|
|
ret = platform_device_add(dwc3);
|
|
if (ret) {
|
|
dev_err(dev, "failed to register dwc3 device\n");
|
|
goto err3;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err3:
|
|
pci_set_drvdata(pci, NULL);
|
|
platform_device_put(dwc3);
|
|
err1:
|
|
pci_disable_device(pci);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void dwc3_pci_remove(struct pci_dev *pci)
|
|
{
|
|
struct dwc3_pci *glue = pci_get_drvdata(pci);
|
|
|
|
platform_device_unregister(glue->usb2_phy);
|
|
platform_device_unregister(glue->usb3_phy);
|
|
platform_device_unregister(glue->dwc3);
|
|
pci_set_drvdata(pci, NULL);
|
|
pci_disable_device(pci);
|
|
}
|
|
|
|
static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
|
|
PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
|
|
},
|
|
{ } /* Terminating Entry */
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
|
|
|
|
#ifdef CONFIG_PM
|
|
static int dwc3_pci_suspend(struct device *dev)
|
|
{
|
|
struct pci_dev *pci = to_pci_dev(dev);
|
|
|
|
pci_disable_device(pci);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc3_pci_resume(struct device *dev)
|
|
{
|
|
struct pci_dev *pci = to_pci_dev(dev);
|
|
int ret;
|
|
|
|
ret = pci_enable_device(pci);
|
|
if (ret) {
|
|
dev_err(dev, "can't re-enable device --> %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
pci_set_master(pci);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
|
|
};
|
|
|
|
#define DEV_PM_OPS (&dwc3_pci_dev_pm_ops)
|
|
#else
|
|
#define DEV_PM_OPS NULL
|
|
#endif /* CONFIG_PM */
|
|
|
|
static struct pci_driver dwc3_pci_driver = {
|
|
.name = "dwc3-pci",
|
|
.id_table = dwc3_pci_id_table,
|
|
.probe = dwc3_pci_probe,
|
|
.remove = dwc3_pci_remove,
|
|
.driver = {
|
|
.pm = DEV_PM_OPS,
|
|
},
|
|
};
|
|
|
|
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
|
MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
|
|
|
|
module_pci_driver(dwc3_pci_driver);
|