Release 4.7 drivers/usb/gadget/udc/bdc/bdc_pci.c
/*
* 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;
}
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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;
}
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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);
}
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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);
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