1. 07 10月, 2006 1 次提交
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    • D
      USB: pxa2xx_udc understands GPIO based VBUS sensing · b2bbb20b
      David Brownell 提交于
      This updates the PXA 25x UDC board-independent infrastructure for VBUS sensing
      and the D+ pullup.  The original code evolved from rather bizarre support on
      Intel's "Lubbock" reference hardware, so that on more sensible hardware it
      doesn't work as well as it could/should.
      
      The change is just to teach the UDC driver how to use built-in PXA GPIO pins
      directly.  This reduces the amount of board-specfic object code needed, and
      enables the use of a VBUS sensing IRQ on boards (like Gumstix) that have one.
      With VBUS sensing, the UDC is unclocked until a host is actually connected.
      Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      b2bbb20b
  5. 27 8月, 2006 1 次提交
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  30. 09 1月, 2006 1 次提交
    • R
      [PATCH] IRQ type flags · 9ded96f2
      Russell King 提交于
      Some ARM platforms have the ability to program the interrupt controller to
      detect various interrupt edges and/or levels.  For some platforms, this is
      critical to setup correctly, particularly those which the setting is dependent
      on the device.
      
      Currently, ARM drivers do (eg) the following:
      
      	err = request_irq(irq, ...);
      
      	set_irq_type(irq, IRQT_RISING);
      
      However, if the interrupt has previously been programmed to be level sensitive
      (for whatever reason) then this will cause an interrupt storm.
      
      Hence, if we combine set_irq_type() with request_irq(), we can then safely set
      the type prior to unmasking the interrupt.  The unfortunate problem is that in
      order to support this, these flags need to be visible outside of the ARM
      architecture - drivers such as smc91x need these flags and they're
      cross-architecture.
      
      Finally, the SA_TRIGGER_* flag passed to request_irq() should reflect the
      property that the device would like.  The IRQ controller code should do its
      best to select the most appropriate supported mode.
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      9ded96f2