mirror of https://gitee.com/openkylin/linux.git
236 lines
6.4 KiB
C
236 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>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 of
|
|
* the License as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/acpi.h>
|
|
|
|
#include "platform_data.h"
|
|
|
|
#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
|
|
#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce
|
|
#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf
|
|
#define PCI_DEVICE_ID_INTEL_BYT 0x0f37
|
|
#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e
|
|
#define PCI_DEVICE_ID_INTEL_BSW 0x22b7
|
|
#define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30
|
|
#define PCI_DEVICE_ID_INTEL_SPTH 0xa130
|
|
#define PCI_DEVICE_ID_INTEL_BXT 0x0aaa
|
|
#define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa
|
|
#define PCI_DEVICE_ID_INTEL_APL 0x5aaa
|
|
|
|
static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
|
|
static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
|
|
|
|
static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
|
|
{ "reset-gpios", &reset_gpios, 1 },
|
|
{ "cs-gpios", &cs_gpios, 1 },
|
|
{ },
|
|
};
|
|
|
|
static int dwc3_pci_quirks(struct pci_dev *pdev)
|
|
{
|
|
if (pdev->vendor == PCI_VENDOR_ID_AMD &&
|
|
pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
|
|
struct dwc3_platform_data pdata;
|
|
|
|
memset(&pdata, 0, sizeof(pdata));
|
|
|
|
pdata.has_lpm_erratum = true;
|
|
pdata.lpm_nyet_threshold = 0xf;
|
|
|
|
pdata.u2exit_lfps_quirk = true;
|
|
pdata.u2ss_inp3_quirk = true;
|
|
pdata.req_p1p2p3_quirk = true;
|
|
pdata.del_p1p2p3_quirk = true;
|
|
pdata.del_phy_power_chg_quirk = true;
|
|
pdata.lfps_filter_quirk = true;
|
|
pdata.rx_detect_poll_quirk = true;
|
|
|
|
pdata.tx_de_emphasis_quirk = true;
|
|
pdata.tx_de_emphasis = 1;
|
|
|
|
/*
|
|
* FIXME these quirks should be removed when AMD NL
|
|
* taps out
|
|
*/
|
|
pdata.disable_scramble_quirk = true;
|
|
pdata.dis_u3_susphy_quirk = true;
|
|
pdata.dis_u2_susphy_quirk = true;
|
|
|
|
return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
|
|
sizeof(pdata));
|
|
}
|
|
|
|
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
|
|
pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
|
|
struct gpio_desc *gpio;
|
|
|
|
acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
|
|
acpi_dwc3_byt_gpios);
|
|
|
|
/*
|
|
* These GPIOs will turn on the USB2 PHY. Note that we have to
|
|
* put the gpio descriptors again here because the phy driver
|
|
* might want to grab them, too.
|
|
*/
|
|
gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
|
|
if (IS_ERR(gpio))
|
|
return PTR_ERR(gpio);
|
|
|
|
gpiod_set_value_cansleep(gpio, 1);
|
|
gpiod_put(gpio);
|
|
|
|
gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
|
|
if (IS_ERR(gpio))
|
|
return PTR_ERR(gpio);
|
|
|
|
if (gpio) {
|
|
gpiod_set_value_cansleep(gpio, 1);
|
|
gpiod_put(gpio);
|
|
usleep_range(10000, 11000);
|
|
}
|
|
}
|
|
|
|
if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
|
|
(pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 ||
|
|
pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI ||
|
|
pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) {
|
|
|
|
struct dwc3_platform_data pdata;
|
|
|
|
memset(&pdata, 0, sizeof(pdata));
|
|
pdata.usb3_lpm_capable = true;
|
|
pdata.has_lpm_erratum = true;
|
|
pdata.dis_enblslpm_quirk = true;
|
|
|
|
return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
|
|
sizeof(pdata));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc3_pci_probe(struct pci_dev *pci,
|
|
const struct pci_device_id *id)
|
|
{
|
|
struct resource res[2];
|
|
struct platform_device *dwc3;
|
|
int ret;
|
|
struct device *dev = &pci->dev;
|
|
|
|
ret = pcim_enable_device(pci);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable pci device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
pci_set_master(pci);
|
|
|
|
dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
|
|
if (!dwc3) {
|
|
dev_err(dev, "couldn't allocate dwc3 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 = "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");
|
|
return ret;
|
|
}
|
|
|
|
pci_set_drvdata(pci, dwc3);
|
|
ret = dwc3_pci_quirks(pci);
|
|
if (ret)
|
|
goto err;
|
|
|
|
dwc3->dev.parent = dev;
|
|
ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev));
|
|
|
|
ret = platform_device_add(dwc3);
|
|
if (ret) {
|
|
dev_err(dev, "failed to register dwc3 device\n");
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
err:
|
|
platform_device_put(dwc3);
|
|
return ret;
|
|
}
|
|
|
|
static void dwc3_pci_remove(struct pci_dev *pci)
|
|
{
|
|
acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
|
|
platform_device_unregister(pci_get_drvdata(pci));
|
|
}
|
|
|
|
static const struct pci_device_id dwc3_pci_id_table[] = {
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
|
|
PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
|
|
PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
|
|
PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
|
|
},
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
|
|
{ } /* Terminating Entry */
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
|
|
|
|
static struct pci_driver dwc3_pci_driver = {
|
|
.name = "dwc3-pci",
|
|
.id_table = dwc3_pci_id_table,
|
|
.probe = dwc3_pci_probe,
|
|
.remove = dwc3_pci_remove,
|
|
};
|
|
|
|
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
|
|
|
|
module_pci_driver(dwc3_pci_driver);
|