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usb: host: add Kconfig option for EHSET

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commit 9841f37a1c ("usb: ehci: Add support for SINGLE_STEP_SET_FEATURE
test of EHSET") added additional code to the EHCI hub driver but it is
anticipated to only have a limited audience (e.g. embedded silicon
vendors and integrators). Avoid subjecting all EHCI (and in the future
maybe xHCI/OHCI, etc.) HCD users to code bloat by conditionally
compiling the EHSET-specific additions with a new Kconfig option,
CONFIG_USB_HCD_TEST_MODE.

Signed-off-by: Jack Pham <jackp@codeaurora.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jack Pham 2013-08-13 13:40:13 -07:00 committed by Greg Kroah-Hartman
parent 034d1527ad
commit 726a85caa3
3 changed files with 26 additions and 1 deletions
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17
drivers/usb/host/Kconfig
View file

@ -699,3 +699,20 @@ config USB_HCD_SSB
for ehci and ohci.
If unsure, say N.
config USB_HCD_TEST_MODE
bool "HCD test mode support"
---help---
Say 'Y' to enable additional software test modes that may be
supported by the host controller drivers.
One such test mode is the Embedded High-speed Host Electrical Test
(EHSET) for EHCI host controller hardware, specifically the "Single
Step Set Feature" test. Typically this will be enabled for On-the-Go
or embedded hosts that need to undergo USB-IF compliance testing with
the aid of special testing hardware. In the future, this may expand
to include other tests that require support from a HCD driver.
This option is of interest only to developers who need to validate
their USB hardware designs. It is not needed for normal use. If
unsure, say N.

8
drivers/usb/host/ehci-hub.c
View file

@ -712,6 +712,8 @@ ehci_hub_descriptor (
}
/*-------------------------------------------------------------------------*/
#ifdef CONFIG_USB_HCD_TEST_MODE
#define EHSET_TEST_SINGLE_STEP_SET_FEATURE 0x06
static void usb_ehset_completion(struct urb *urb)
@ -847,6 +849,7 @@ static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port)
kfree(buf);
return retval;
}
#endif /* CONFIG_USB_HCD_TEST_MODE */
/*-------------------------------------------------------------------------*/
static int ehci_hub_control (
@ -1222,13 +1225,16 @@ static int ehci_hub_control (
* about the EHCI-specific stuff.
*/
case USB_PORT_FEAT_TEST:
#ifdef CONFIG_USB_HCD_TEST_MODE
if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) {
spin_unlock_irqrestore(&ehci->lock, flags);
retval = ehset_single_step_set_feature(hcd,
wIndex);
spin_lock_irqsave(&ehci->lock, flags);
break;
} else if (!selector || selector > 5)
}
#endif
if (!selector || selector > 5)
goto error;
spin_unlock_irqrestore(&ehci->lock, flags);
ehci_quiesce(ehci);

2
drivers/usb/host/ehci-q.c
View file

@ -1139,6 +1139,7 @@ submit_async (
}
/*-------------------------------------------------------------------------*/
#ifdef CONFIG_USB_HCD_TEST_MODE
/*
* This function creates the qtds and submits them for the
* SINGLE_STEP_SET_FEATURE Test.
@ -1238,6 +1239,7 @@ static int submit_single_step_set_feature(
qtd_list_free(ehci, urb, head);
return -1;
}
#endif /* CONFIG_USB_HCD_TEST_MODE */
/*-------------------------------------------------------------------------*/