/* * ci13xxx_pci.c - MIPS USB IP core family device controller * * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. * * Author: David Lopo * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/platform_device.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/interrupt.h> #include <linux/usb/gadget.h> #include <linux/usb/chipidea.h> /* driver name */ #define UDC_DRIVER_NAME "ci13xxx_pci" /****************************************************************************** * PCI block *****************************************************************************/ struct ci13xxx_platform_data pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = DEF_CAPOFFSET, }; struct ci13xxx_platform_data langwell_pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = 0, }; struct ci13xxx_platform_data penwell_pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = 0, .power_budget = 200, }; /** * ci13xxx_pci_probe: PCI probe * @pdev: USB device controller being probed * @id: PCI hotplug ID connecting controller to UDC framework * * This function returns an error code * Allocates basic PCI resources for this USB device controller, and then * invokes the udc_probe() method to start the UDC associated with it */ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct ci13xxx_platform_data *platdata = (void *)id->driver_data; struct platform_device *plat_ci; struct resource res[3]; int retval = 0, nres = 2; if (!platdata) { dev_err(&pdev->dev, "device doesn't provide driver data\n"); return -ENODEV; } retval = pci_enable_device(pdev); if (retval) goto done; if (!pdev->irq) { dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!"); retval = -ENODEV; goto disable_device; } pci_set_power_state(pdev, PCI_D0); pci_set_master(pdev); pci_try_set_mwi(pdev); memset(res, 0, sizeof(res)); res[0].start = pci_resource_start(pdev, 0); res[0].end = pci_resource_end(pdev, 0); res[0].flags = IORESOURCE_MEM; res[1].start = pdev->irq; res[1].flags = IORESOURCE_IRQ; plat_ci = ci13xxx_add_device(&pdev->dev, res, nres, platdata); if (IS_ERR(plat_ci)) { dev_err(&pdev->dev, "ci13xxx_add_device failed!\n"); retval = PTR_ERR(plat_ci); goto disable_device; } pci_set_drvdata(pdev, plat_ci); return 0; disable_device: pci_disable_device(pdev); done: return retval; } /** * ci13xxx_pci_remove: PCI remove * @pdev: USB Device Controller being removed * * Reverses the effect of ci13xxx_pci_probe(), * first invoking the udc_remove() and then releases * all PCI resources allocated for this USB device controller */ static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev) { struct platform_device *plat_ci = pci_get_drvdata(pdev); ci13xxx_remove_device(plat_ci); pci_set_drvdata(pdev, NULL); pci_disable_device(pdev); } /** * PCI device table * PCI device structure * * Check "pci.h" for details */ static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = { { PCI_DEVICE(0x153F, 0x1004), .driver_data = (kernel_ulong_t)&pci_platdata, }, { PCI_DEVICE(0x153F, 0x1006), .driver_data = (kernel_ulong_t)&pci_platdata, }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811), .driver_data = (kernel_ulong_t)&langwell_pci_platdata, }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829), .driver_data = (kernel_ulong_t)&penwell_pci_platdata, }, { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ } }; MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table); static struct pci_driver ci13xxx_pci_driver = { .name = UDC_DRIVER_NAME, .id_table = ci13xxx_pci_id_table, .probe = ci13xxx_pci_probe, .remove = __devexit_p(ci13xxx_pci_remove), }; module_pci_driver(ci13xxx_pci_driver); MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); MODULE_LICENSE("GPL"); MODULE_VERSION("June 2008");