summaryrefslogtreecommitdiffstats
path: root/drivers/usb/chipidea/ci_hdrc_pci.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/chipidea/ci_hdrc_pci.c')
-rw-r--r--drivers/usb/chipidea/ci_hdrc_pci.c170
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..d63479e1a
--- /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");