Initial file dump from open source releaseHEADmaster

1 files changed, 268 insertions, 0 deletions

diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
new file mode 100644
index 00000000..2357c4e5
--- /dev/null
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -0,0 +1,268 @@
+/**
+ * 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
+#define PCI_DEVICE_ID_INTEL_BYT		0x0f37
+#define PCI_DEVICE_ID_INTEL_MRFLD	0x119e
+
+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->dwc3);
+	platform_device_unregister(glue->usb2_phy);
+	platform_device_unregister(glue->usb3_phy);
+	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),
+	},
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
+	{  }	/* 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);