Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 170 insertions, 0 deletions

diff --git a/drivers/usb/chipidea/ci_hdrc_pci.c b/drivers/usb/chipidea/ci_hdrc_pci.c
new file mode 100644
index 000000000..49a61549c
--- /dev/null
+++ b/drivers/usb/chipidea/ci_hdrc_pci.c
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ci_hdrc_pci.c - MIPS USB IP core family device controller
+ *
+ * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
+ *
+ * Author: David Lopo
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/chipidea.h>
+#include <linux/usb/usb_phy_generic.h>
+
+/* driver name */
+#define UDC_DRIVER_NAME   "ci_hdrc_pci"
+
+struct ci_hdrc_pci {
+	struct platform_device	*ci;
+	struct platform_device	*phy;
+};
+
+/******************************************************************************
+ * PCI block
+ *****************************************************************************/
+static struct ci_hdrc_platform_data pci_platdata = {
+	.name		= UDC_DRIVER_NAME,
+	.capoffset	= DEF_CAPOFFSET,
+};
+
+static struct ci_hdrc_platform_data langwell_pci_platdata = {
+	.name		= UDC_DRIVER_NAME,
+	.capoffset	= 0,
+};
+
+static struct ci_hdrc_platform_data penwell_pci_platdata = {
+	.name		= UDC_DRIVER_NAME,
+	.capoffset	= 0,
+	.power_budget	= 200,
+};
+
+/**
+ * ci_hdrc_pci_probe: PCI probe
+ * @pdev: USB device controller being probed
+ * @id:   PCI hotplug ID connecting controller to UDC framework
+ *
+ * This function returns an error code
+ * Allocates basic PCI resources for this USB device controller, and then
+ * invokes the udc_probe() method to start the UDC associated with it
+ */
+static int ci_hdrc_pci_probe(struct pci_dev *pdev,
+				       const struct pci_device_id *id)
+{
+	struct ci_hdrc_platform_data *platdata = (void *)id->driver_data;
+	struct ci_hdrc_pci *ci;
+	struct resource res[3];
+	int retval = 0, nres = 2;
+
+	if (!platdata) {
+		dev_err(&pdev->dev, "device doesn't provide driver data\n");
+		return -ENODEV;
+	}
+
+	ci = devm_kzalloc(&pdev->dev, sizeof(*ci), GFP_KERNEL);
+	if (!ci)
+		return -ENOMEM;
+
+	retval = pcim_enable_device(pdev);
+	if (retval)
+		return retval;
+
+	if (!pdev->irq) {
+		dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
+		return -ENODEV;
+	}
+
+	pci_set_master(pdev);
+	pci_try_set_mwi(pdev);
+
+	/* register a nop PHY */
+	ci->phy = usb_phy_generic_register();
+	if (IS_ERR(ci->phy))
+		return PTR_ERR(ci->phy);
+
+	memset(res, 0, sizeof(res));
+	res[0].start	= pci_resource_start(pdev, 0);
+	res[0].end	= pci_resource_end(pdev, 0);
+	res[0].flags	= IORESOURCE_MEM;
+	res[1].start	= pdev->irq;
+	res[1].flags	= IORESOURCE_IRQ;
+
+	ci->ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata);
+	if (IS_ERR(ci->ci)) {
+		dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
+		usb_phy_generic_unregister(ci->phy);
+		return PTR_ERR(ci->ci);
+	}
+
+	pci_set_drvdata(pdev, ci);
+
+	return 0;
+}
+
+/**
+ * ci_hdrc_pci_remove: PCI remove
+ * @pdev: USB Device Controller being removed
+ *
+ * Reverses the effect of ci_hdrc_pci_probe(),
+ * first invoking the udc_remove() and then releases
+ * all PCI resources allocated for this USB device controller
+ */
+static void ci_hdrc_pci_remove(struct pci_dev *pdev)
+{
+	struct ci_hdrc_pci *ci = pci_get_drvdata(pdev);
+
+	ci_hdrc_remove_device(ci->ci);
+	usb_phy_generic_unregister(ci->phy);
+}
+
+/**
+ * PCI device table
+ * PCI device structure
+ *
+ * Check "pci.h" for details
+ *
+ * Note: ehci-pci driver may try to probe the device first. You have to add an
+ * ID to the bypass_pci_id_table in ehci-pci driver to prevent this.
+ */
+static const struct pci_device_id ci_hdrc_pci_id_table[] = {
+	{
+		PCI_DEVICE(0x153F, 0x1004),
+		.driver_data = (kernel_ulong_t)&pci_platdata,
+	},
+	{
+		PCI_DEVICE(0x153F, 0x1006),
+		.driver_data = (kernel_ulong_t)&pci_platdata,
+	},
+	{
+		PCI_VDEVICE(INTEL, 0x0811),
+		.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
+	},
+	{
+		PCI_VDEVICE(INTEL, 0x0829),
+		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
+	},
+	{
+		/* Intel Clovertrail */
+		PCI_VDEVICE(INTEL, 0xe006),
+		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
+	},
+	{ 0 } /* end: all zeroes */
+};
+MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table);
+
+static struct pci_driver ci_hdrc_pci_driver = {
+	.name         =	UDC_DRIVER_NAME,
+	.id_table     =	ci_hdrc_pci_id_table,
+	.probe        =	ci_hdrc_pci_probe,
+	.remove       =	ci_hdrc_pci_remove,
+};
+
+module_pci_driver(ci_hdrc_pci_driver);
+
+MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");
+MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ci13xxx_pci");