diff options
Diffstat (limited to 'drivers/usb/otg/nop-usb-xceiv.c')
| -rw-r--r-- | drivers/usb/otg/nop-usb-xceiv.c | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c deleted file mode 100644 index e70014ab097..00000000000 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ /dev/null @@ -1,177 +0,0 @@ -/* - * drivers/usb/otg/nop-usb-xceiv.c - * - * NOP USB transceiver for all USB transceiver which are either built-in - * into USB IP or which are mostly autonomous. - * - * Copyright (C) 2009 Texas Instruments Inc - * Author: Ajay Kumar Gupta <ajay.gupta@ti.com> - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Current status: - * This provides a "nop" transceiver for PHYs which are - * autonomous such as isp1504, isp1707, etc. - */ - -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/usb/otg.h> -#include <linux/slab.h> - -struct nop_usb_xceiv { - struct otg_transceiver otg; - struct device *dev; -}; - -static struct platform_device *pd; - -void usb_nop_xceiv_register(void) -{ - if (pd) - return; - pd = platform_device_register_simple("nop_usb_xceiv", -1, NULL, 0); - if (!pd) { - printk(KERN_ERR "Unable to register usb nop transceiver\n"); - return; - } -} -EXPORT_SYMBOL(usb_nop_xceiv_register); - -void usb_nop_xceiv_unregister(void) -{ - platform_device_unregister(pd); - pd = NULL; -} -EXPORT_SYMBOL(usb_nop_xceiv_unregister); - -static inline struct nop_usb_xceiv *xceiv_to_nop(struct otg_transceiver *x) -{ - return container_of(x, struct nop_usb_xceiv, otg); -} - -static int nop_set_suspend(struct otg_transceiver *x, int suspend) -{ - return 0; -} - -static int nop_set_peripheral(struct otg_transceiver *x, - struct usb_gadget *gadget) -{ - struct nop_usb_xceiv *nop; - - if (!x) - return -ENODEV; - - nop = xceiv_to_nop(x); - - if (!gadget) { - nop->otg.gadget = NULL; - return -ENODEV; - } - - nop->otg.gadget = gadget; - nop->otg.state = OTG_STATE_B_IDLE; - return 0; -} - -static int nop_set_host(struct otg_transceiver *x, struct usb_bus *host) -{ - struct nop_usb_xceiv *nop; - - if (!x) - return -ENODEV; - - nop = xceiv_to_nop(x); - - if (!host) { - nop->otg.host = NULL; - return -ENODEV; - } - - nop->otg.host = host; - return 0; -} - -static int __devinit nop_usb_xceiv_probe(struct platform_device *pdev) -{ - struct nop_usb_xceiv *nop; - int err; - - nop = kzalloc(sizeof *nop, GFP_KERNEL); - if (!nop) - return -ENOMEM; - - nop->dev = &pdev->dev; - nop->otg.dev = nop->dev; - nop->otg.label = "nop-xceiv"; - nop->otg.state = OTG_STATE_UNDEFINED; - nop->otg.set_host = nop_set_host; - nop->otg.set_peripheral = nop_set_peripheral; - nop->otg.set_suspend = nop_set_suspend; - - err = otg_set_transceiver(&nop->otg); - if (err) { - dev_err(&pdev->dev, "can't register transceiver, err: %d\n", - err); - goto exit; - } - - platform_set_drvdata(pdev, nop); - - return 0; -exit: - kfree(nop); - return err; -} - -static int __devexit nop_usb_xceiv_remove(struct platform_device *pdev) -{ - struct nop_usb_xceiv *nop = platform_get_drvdata(pdev); - - otg_set_transceiver(NULL); - - platform_set_drvdata(pdev, NULL); - kfree(nop); - - return 0; -} - -static struct platform_driver nop_usb_xceiv_driver = { - .probe = nop_usb_xceiv_probe, - .remove = __devexit_p(nop_usb_xceiv_remove), - .driver = { - .name = "nop_usb_xceiv", - .owner = THIS_MODULE, - }, -}; - -static int __init nop_usb_xceiv_init(void) -{ - return platform_driver_register(&nop_usb_xceiv_driver); -} -subsys_initcall(nop_usb_xceiv_init); - -static void __exit nop_usb_xceiv_exit(void) -{ - platform_driver_unregister(&nop_usb_xceiv_driver); -} -module_exit(nop_usb_xceiv_exit); - -MODULE_ALIAS("platform:nop_usb_xceiv"); -MODULE_AUTHOR("Texas Instruments Inc"); -MODULE_DESCRIPTION("NOP USB Transceiver driver"); -MODULE_LICENSE("GPL"); |