134 lines
2.9 KiB
C
134 lines
2.9 KiB
C
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/*
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* bdc_pci.c - BRCM BDC USB3.0 device controller PCI interface file.
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*
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* Copyright (C) 2014 Broadcom Corporation
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*
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* Author: Ashwini Pahuja
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*
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* Based on drivers under drivers/usb/
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/pci_ids.h>
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#include <linux/platform_device.h>
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#include "bdc.h"
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#define BDC_PCI_PID 0x1570
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struct bdc_pci {
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struct device *dev;
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struct platform_device *bdc;
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};
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static int bdc_setup_msi(struct pci_dev *pci)
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{
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int ret;
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ret = pci_enable_msi(pci);
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if (ret) {
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pr_err("failed to allocate MSI entry\n");
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return ret;
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}
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return ret;
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}
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static int bdc_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
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{
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struct resource res[2];
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struct platform_device *bdc;
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struct bdc_pci *glue;
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int ret = -ENOMEM;
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glue = devm_kzalloc(&pci->dev, sizeof(*glue), GFP_KERNEL);
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if (!glue)
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return -ENOMEM;
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glue->dev = &pci->dev;
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ret = pci_enable_device(pci);
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if (ret) {
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dev_err(&pci->dev, "failed to enable pci device\n");
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return -ENODEV;
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}
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pci_set_master(pci);
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bdc = platform_device_alloc(BRCM_BDC_NAME, PLATFORM_DEVID_AUTO);
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if (!bdc)
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return -ENOMEM;
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memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
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bdc_setup_msi(pci);
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res[0].start = pci_resource_start(pci, 0);
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res[0].end = pci_resource_end(pci, 0);
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res[0].name = BRCM_BDC_NAME;
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res[0].flags = IORESOURCE_MEM;
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res[1].start = pci->irq;
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res[1].name = BRCM_BDC_NAME;
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res[1].flags = IORESOURCE_IRQ;
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ret = platform_device_add_resources(bdc, res, ARRAY_SIZE(res));
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if (ret) {
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dev_err(&pci->dev,
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"couldn't add resources to bdc device\n");
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platform_device_put(bdc);
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return ret;
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}
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pci_set_drvdata(pci, glue);
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dma_set_coherent_mask(&bdc->dev, pci->dev.coherent_dma_mask);
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bdc->dev.dma_mask = pci->dev.dma_mask;
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bdc->dev.dma_parms = pci->dev.dma_parms;
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bdc->dev.parent = &pci->dev;
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glue->bdc = bdc;
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ret = platform_device_add(bdc);
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if (ret) {
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dev_err(&pci->dev, "failed to register bdc device\n");
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platform_device_put(bdc);
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return ret;
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}
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return 0;
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}
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static void bdc_pci_remove(struct pci_dev *pci)
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{
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struct bdc_pci *glue = pci_get_drvdata(pci);
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platform_device_unregister(glue->bdc);
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pci_disable_msi(pci);
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}
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static struct pci_device_id bdc_pci_id_table[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, BDC_PCI_PID), },
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{} /* Terminating Entry */
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};
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MODULE_DEVICE_TABLE(pci, bdc_pci_id_table);
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static struct pci_driver bdc_pci_driver = {
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.name = "bdc-pci",
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.id_table = bdc_pci_id_table,
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.probe = bdc_pci_probe,
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.remove = bdc_pci_remove,
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};
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MODULE_AUTHOR("Ashwini Pahuja <ashwini.linux@gmail.com>");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("BRCM BDC USB3 PCI Glue layer");
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module_pci_driver(bdc_pci_driver);
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