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path: root/drivers/usb/dwc3/dwc3-pci.c
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Diffstat (limited to 'drivers/usb/dwc3/dwc3-pci.c')
-rw-r--r--drivers/usb/dwc3/dwc3-pci.c160
1 files changed, 160 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
new file mode 100644
index 000000000..b773fb53d
--- /dev/null
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -0,0 +1,160 @@
+/**
+ * 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 "platform_data.h"
+
+#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
+#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
+
+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));
+ }
+
+ 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;
+
+ 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)
+{
+ 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_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_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);