Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / usb / chipidea / ci_hdrc_pci.c

diff --git a/kernel/drivers/usb/chipidea/ci_hdrc_pci.c b/kernel/drivers/usb/chipidea/ci_hdrc_pci.c
new file mode 100644 (file)
index 0000000..773d150
--- /dev/null
+++ b/kernel/drivers/usb/chipidea/ci_hdrc_pci.c
@@ -0,0 +1,174 @@
+/*
+ * ci_hdrc_pci.c - MIPS USB IP core family device controller
+ *
+ * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
+ *
+ * Author: David Lopo
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#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 (!ci->phy)
+               return -ENOMEM;
+
+       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_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
+               .driver_data = (kernel_ulong_t)&langwell_pci_platdata,
+       },
+       {
+               PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
+               .driver_data = (kernel_ulong_t)&penwell_pci_platdata,
+       },
+       {
+               /* Intel Clovertrail */
+               PCI_DEVICE(PCI_VENDOR_ID_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_VERSION("June 2008");
+MODULE_ALIAS("platform:ci13xxx_pci");