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yaml --- r: 226970 b: refs/heads/master c: 409a15d h: refs/heads/master v: v3
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Pavankumar Kondeti
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Greg Kroah-Hartman
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Dec 10, 2010
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: 87c0104af742af2acfcbd685f2b9a40f33770dc0 | ||
| refs/heads/master: 409a15da9851b6e6a5e1c5787be31a987184b7cf |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,172 @@ | ||
| /* | ||
| * 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/module.h> | ||
| #include <linux/pci.h> | ||
|
|
||
| #include "ci13xxx_udc.c" | ||
|
|
||
| /* driver name */ | ||
| #define UDC_DRIVER_NAME "ci13xxx_pci" | ||
|
|
||
| /****************************************************************************** | ||
| * PCI block | ||
| *****************************************************************************/ | ||
| /** | ||
| * ci13xxx_pci_irq: interrut handler | ||
| * @irq: irq number | ||
| * @pdev: USB Device Controller interrupt source | ||
| * | ||
| * This function returns IRQ_HANDLED if the IRQ has been handled | ||
| * This is an ISR don't trace, use attribute interface instead | ||
| */ | ||
| static irqreturn_t ci13xxx_pci_irq(int irq, void *pdev) | ||
| { | ||
| if (irq == 0) { | ||
| dev_err(&((struct pci_dev *)pdev)->dev, "Invalid IRQ0 usage!"); | ||
| return IRQ_HANDLED; | ||
| } | ||
| return udc_irq(); | ||
| } | ||
|
|
||
| /** | ||
| * 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) | ||
| { | ||
| void __iomem *regs = NULL; | ||
| int retval = 0; | ||
|
|
||
| if (id == NULL) | ||
| return -EINVAL; | ||
|
|
||
| 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; | ||
| } | ||
|
|
||
| retval = pci_request_regions(pdev, UDC_DRIVER_NAME); | ||
| if (retval) | ||
| goto disable_device; | ||
|
|
||
| /* BAR 0 holds all the registers */ | ||
| regs = pci_iomap(pdev, 0, 0); | ||
| if (!regs) { | ||
| dev_err(&pdev->dev, "Error mapping memory!"); | ||
| retval = -EFAULT; | ||
| goto release_regions; | ||
| } | ||
| pci_set_drvdata(pdev, (__force void *)regs); | ||
|
|
||
| pci_set_master(pdev); | ||
| pci_try_set_mwi(pdev); | ||
|
|
||
| retval = udc_probe(&pdev->dev, regs, UDC_DRIVER_NAME); | ||
| if (retval) | ||
| goto iounmap; | ||
|
|
||
| /* our device does not have MSI capability */ | ||
|
|
||
| retval = request_irq(pdev->irq, ci13xxx_pci_irq, IRQF_SHARED, | ||
| UDC_DRIVER_NAME, pdev); | ||
| if (retval) | ||
| goto gadget_remove; | ||
|
|
||
| return 0; | ||
|
|
||
| gadget_remove: | ||
| udc_remove(); | ||
| iounmap: | ||
| pci_iounmap(pdev, regs); | ||
| release_regions: | ||
| pci_release_regions(pdev); | ||
| 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) | ||
| { | ||
| free_irq(pdev->irq, pdev); | ||
| udc_remove(); | ||
| pci_iounmap(pdev, (__force void __iomem *)pci_get_drvdata(pdev)); | ||
| pci_release_regions(pdev); | ||
| 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) }, | ||
| { PCI_DEVICE(0x153F, 0x1006) }, | ||
| { 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), | ||
| }; | ||
|
|
||
| /** | ||
| * ci13xxx_pci_init: module init | ||
| * | ||
| * Driver load | ||
| */ | ||
| static int __init ci13xxx_pci_init(void) | ||
| { | ||
| return pci_register_driver(&ci13xxx_pci_driver); | ||
| } | ||
| module_init(ci13xxx_pci_init); | ||
|
|
||
| /** | ||
| * ci13xxx_pci_exit: module exit | ||
| * | ||
| * Driver unload | ||
| */ | ||
| static void __exit ci13xxx_pci_exit(void) | ||
| { | ||
| pci_unregister_driver(&ci13xxx_pci_driver); | ||
| } | ||
| module_exit(ci13xxx_pci_exit); | ||
|
|
||
| MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); | ||
| MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); | ||
| MODULE_LICENSE("GPL"); | ||
| MODULE_VERSION("June 2008"); |
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