usb: chipidea: add flag CI_HDRC_DUAL_ROLE_NOT_OTG

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Since we need otgsc to know vbus's status at some chipidea
controllers even it is peripheral-only mode. Besides, some
SoCs (eg, AR9331 SoC) don't have otgsc register even
the DCCPARAMS_DC and DCCPARAMS_HC are both 1 at CAP_DCCPARAMS.

We inroduce flag CI_HDRC_DUAL_ROLE_NOT_OTG to indicate if the
controller is dual role, but not supports OTG. If this flag is
not set, we follow the rule that if DCCPARAMS_DC and DCCPARAMS_HC
are both 1 at CAP_DCCPARAMS, then this controller is otg capable.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Peter Chen 2013-08-14 12:44:08 +03:00 • committed by Greg Kroah-Hartman

parent 3f124d233e

commit 577b232fc9

2 changed files with 35 additions and 7 deletions

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37

drivers/usb/chipidea/core.c

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5

include/linux/usb/chipidea.h

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