diff options
| author | David Brownell <david-b@pacbell.net> | 2007-01-16 12:46:39 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-02-07 15:44:37 -0800 |
| commit | 66e56ce75e39210415fb12ceacd5f3580ad72d50 (patch) | |
| tree | aefd162287e90def0a034c4a6c7aaa24617c779f /drivers/usb/gadget/at91_udc.c | |
| parent | 57e06c11372eccf5acebdd4664eb025fee76c561 (diff) | |
| download | kernel_samsung_smdk4412-66e56ce75e39210415fb12ceacd5f3580ad72d50.zip kernel_samsung_smdk4412-66e56ce75e39210415fb12ceacd5f3580ad72d50.tar.gz kernel_samsung_smdk4412-66e56ce75e39210415fb12ceacd5f3580ad72d50.tar.bz2 | |
USB: at91_udc wakeup event updates
This updates the AT91 UDC driver's handling of wakeup events:
- Fix a bug in the original scheme, which was never updated after
the {enable,disable}_irq_wake() semantics were updated to address
refcounting issues (i.e. behave for shared irqs).
- Couple handling of both type of wakeup events, to be more direct. The
controller can be source of wakeup events for cases like bus reset
and USB resume. On some boards, VBUS sensing is also IRQ driven.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/at91_udc.c')
| -rw-r--r-- | drivers/usb/gadget/at91_udc.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 5a72743..f390501 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1807,16 +1807,13 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg) || !wake || at91_suspend_entering_slow_clock()) { pullup(udc, 0); - disable_irq_wake(udc->udp_irq); + wake = 0; } else enable_irq_wake(udc->udp_irq); - if (udc->board.vbus_pin > 0) { - if (wake) - enable_irq_wake(udc->board.vbus_pin); - else - disable_irq_wake(udc->board.vbus_pin); - } + udc->active_suspend = wake; + if (udc->board.vbus_pin > 0 && wake) + enable_irq_wake(udc->board.vbus_pin); return 0; } @@ -1824,8 +1821,14 @@ static int at91udc_resume(struct platform_device *pdev) { struct at91_udc *udc = platform_get_drvdata(pdev); + if (udc->board.vbus_pin > 0 && udc->active_suspend) + disable_irq_wake(udc->board.vbus_pin); + /* maybe reconnect to host; if so, clocks on */ - pullup(udc, 1); + if (udc->active_suspend) + disable_irq_wake(udc->udp_irq); + else + pullup(udc, 1); return 0; } #else |