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usb: chipidea: improve kconfig 2.0

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This patch provides a cleaner solution to the problem described in
commit 20a677fd ("usb: chipidea: improve kconfig").

The goal to be achieved is to force USB_CHIPIDEA=m if either
USB_EHCI_HCD=m or USB_GADGET=m.
If both are 'y' USB_CHIPIDEA may be selected to be 'm' or 'y'.

The old patch had the drawback, that USB_CHIPIDEA could be chosen as
'y' though USB_EHCI_HCD or USB_GADGET (or both) were 'm' leading to a
situation where USB_CHIPIDEA_HOST or USB_CHIPIDEA_UDC vanished from
the config options producing a compilable but dysfunctional driver.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Reviewed-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>
This commit is contained in:
Lothar Waßmann 2013-08-14 12:43:58 +03:00 committed by Greg Kroah-Hartman
parent 9d84d55116
commit a0cfdc6bc7
1 changed files with 3 additions and 4 deletions
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7
drivers/usb/chipidea/Kconfig
View File

@ -1,6 +1,6 @@
config USB_CHIPIDEA
tristate "ChipIdea Highspeed Dual Role Controller"
depends on USB || USB_GADGET
depends on (USB_EHCI_HCD && USB_GADGET) || (USB_EHCI_HCD && !USB_GADGET) || (!USB_EHCI_HCD && USB_GADGET)
help
Say Y here if your system has a dual role high speed USB
controller based on ChipIdea silicon IP. Currently, only the
@ -12,15 +12,14 @@ if USB_CHIPIDEA
config USB_CHIPIDEA_UDC
bool "ChipIdea device controller"
depends on USB_GADGET=y || (USB_CHIPIDEA=m && USB_GADGET=m)
depends on USB_GADGET
help
Say Y here to enable device controller functionality of the
ChipIdea driver.
config USB_CHIPIDEA_HOST
bool "ChipIdea host controller"
depends on USB=y
depends on USB_EHCI_HCD=y || (USB_CHIPIDEA=m && USB_EHCI_HCD=m)
depends on USB_EHCI_HCD
select USB_EHCI_ROOT_HUB_TT
help
Say Y here to enable host controller functionality of the