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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/usb/gadget/udc/bdc/bdc_pci.c
Initial import
Diffstat (limited to 'drivers/usb/gadget/udc/bdc/bdc_pci.c')
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_pci.c132
1 files changed, 132 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/bdc/bdc_pci.c b/drivers/usb/gadget/udc/bdc/bdc_pci.c
new file mode 100644
index 000000000..02968842b
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_pci.c
@@ -0,0 +1,132 @@
+/*
+ * bdc_pci.c - BRCM BDC USB3.0 device controller PCI interface file.
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * Based on drivers under drivers/usb/
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/platform_device.h>
+
+#include "bdc.h"
+
+#define BDC_PCI_PID 0x1570
+
+struct bdc_pci {
+ struct device *dev;
+ struct platform_device *bdc;
+};
+
+static int bdc_setup_msi(struct pci_dev *pci)
+{
+ int ret;
+
+ ret = pci_enable_msi(pci);
+ if (ret) {
+ pr_err("failed to allocate MSI entry\n");
+ return ret;
+ }
+
+ return ret;
+}
+
+static int bdc_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
+{
+ struct resource res[2];
+ struct platform_device *bdc;
+ struct bdc_pci *glue;
+ int ret = -ENOMEM;
+
+ glue = devm_kzalloc(&pci->dev, sizeof(*glue), GFP_KERNEL);
+ if (!glue)
+ return -ENOMEM;
+
+ glue->dev = &pci->dev;
+ ret = pci_enable_device(pci);
+ if (ret) {
+ dev_err(&pci->dev, "failed to enable pci device\n");
+ return -ENODEV;
+ }
+ pci_set_master(pci);
+
+ bdc = platform_device_alloc(BRCM_BDC_NAME, PLATFORM_DEVID_AUTO);
+ if (!bdc)
+ return -ENOMEM;
+
+ memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
+ bdc_setup_msi(pci);
+
+ res[0].start = pci_resource_start(pci, 0);
+ res[0].end = pci_resource_end(pci, 0);
+ res[0].name = BRCM_BDC_NAME;
+ res[0].flags = IORESOURCE_MEM;
+
+ res[1].start = pci->irq;
+ res[1].name = BRCM_BDC_NAME;
+ res[1].flags = IORESOURCE_IRQ;
+
+ ret = platform_device_add_resources(bdc, res, ARRAY_SIZE(res));
+ if (ret) {
+ dev_err(&pci->dev,
+ "couldn't add resources to bdc device\n");
+ return ret;
+ }
+
+ pci_set_drvdata(pci, glue);
+
+ dma_set_coherent_mask(&bdc->dev, pci->dev.coherent_dma_mask);
+
+ bdc->dev.dma_mask = pci->dev.dma_mask;
+ bdc->dev.dma_parms = pci->dev.dma_parms;
+ bdc->dev.parent = &pci->dev;
+ glue->bdc = bdc;
+
+ ret = platform_device_add(bdc);
+ if (ret) {
+ dev_err(&pci->dev, "failed to register bdc device\n");
+ platform_device_put(bdc);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void bdc_pci_remove(struct pci_dev *pci)
+{
+ struct bdc_pci *glue = pci_get_drvdata(pci);
+
+ platform_device_unregister(glue->bdc);
+ pci_disable_msi(pci);
+}
+
+static struct pci_device_id bdc_pci_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, BDC_PCI_PID), },
+ {} /* Terminating Entry */
+};
+
+MODULE_DEVICE_TABLE(pci, bdc_pci_id_table);
+
+static struct pci_driver bdc_pci_driver = {
+ .name = "bdc-pci",
+ .id_table = bdc_pci_id_table,
+ .probe = bdc_pci_probe,
+ .remove = bdc_pci_remove,
+};
+
+MODULE_AUTHOR("Ashwini Pahuja <ashwini.linux@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("BRCM BDC USB3 PCI Glue layer");
+module_pci_driver(bdc_pci_driver);