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USB: otg: adding nop usb transceiver

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NOP transceiver is used by all the usb transceiver which are mostly
autonomous and doesn't require any programming or which are built
into the usb ip itself.NOP transceiver only allocates the memory
for struct xceiv and calls otg_set_transceiver() so function call
to otg_get_transceiver() will return a valid transceiver.

NOP transceiver device should be registered by calling
usb_nop_xceiv_register() from platform files.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ajay Kumar Gupta
2009-02-06 17:32:35 +05:30
committed by Greg Kroah-Hartman
parent 5d1ca6cf7f
commit f6d92a05c8
4 changed files with 193 additions and 0 deletions
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4
include/linux/usb/otg.h
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@@ -80,6 +80,10 @@ struct otg_transceiver {
/* for board-specific init logic */
extern int otg_set_transceiver(struct otg_transceiver *);
#ifdef CONFIG_NOP_USB_XCEIV
extern void usb_nop_xceiv_register(void);
extern void usb_nop_xceiv_unregister(void);
#endif
/* for usb host and peripheral controller drivers */