4 * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
5 * Author: Johannes Thumshirn <johannes.thumshirn@men.de>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; version 2 of the License.
12 #include <linux/module.h>
13 #include <linux/pci.h>
14 #include <linux/mcb.h>
16 #include "mcb-internal.h"
23 static int mcb_pci_get_irq(struct mcb_device *mdev)
25 struct mcb_bus *mbus = mdev->bus;
26 struct device *dev = mbus->carrier;
27 struct pci_dev *pdev = to_pci_dev(dev);
32 static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
40 priv = devm_kzalloc(&pdev->dev, sizeof(struct priv), GFP_KERNEL);
44 ret = pci_enable_device(pdev);
46 dev_err(&pdev->dev, "Failed to enable PCI device\n");
50 mapbase = pci_resource_start(pdev, 0);
52 dev_err(&pdev->dev, "No PCI resource\n");
56 ret = pci_request_region(pdev, 0, KBUILD_MODNAME);
58 dev_err(&pdev->dev, "Failed to request PCI BARs\n");
62 priv->base = pci_iomap(pdev, 0, 0);
64 dev_err(&pdev->dev, "Cannot ioremap\n");
69 flags = pci_resource_flags(pdev, 0);
70 if (flags & IORESOURCE_IO) {
73 "IO mapped PCI devices are not supported\n");
77 pci_set_drvdata(pdev, priv);
79 priv->bus = mcb_alloc_bus(&pdev->dev);
80 if (IS_ERR(priv->bus)) {
81 ret = PTR_ERR(priv->bus);
85 priv->bus->get_irq = mcb_pci_get_irq;
87 ret = chameleon_parse_cells(priv->bus, mapbase, priv->base);
92 dev_dbg(&pdev->dev, "Found %d cells\n", num_cells);
94 mcb_bus_add_devices(priv->bus);
97 pci_iounmap(pdev, priv->base);
99 pci_release_region(pdev, 0);
101 pci_disable_device(pdev);
105 static void mcb_pci_remove(struct pci_dev *pdev)
107 struct priv *priv = pci_get_drvdata(pdev);
109 mcb_release_bus(priv->bus);
112 static const struct pci_device_id mcb_pci_tbl[] = {
113 { PCI_DEVICE(PCI_VENDOR_ID_MEN, PCI_DEVICE_ID_MEN_CHAMELEON) },
116 MODULE_DEVICE_TABLE(pci, mcb_pci_tbl);
118 static struct pci_driver mcb_pci_driver = {
120 .id_table = mcb_pci_tbl,
121 .probe = mcb_pci_probe,
122 .remove = mcb_pci_remove,
125 module_pci_driver(mcb_pci_driver);
127 MODULE_AUTHOR("Johannes Thumshirn <johannes.thumshirn@men.de>");
128 MODULE_LICENSE("GPL");
129 MODULE_DESCRIPTION("MCB over PCI support");