Hi,
On Wed, Sep 22, 2010 at 03:55:14AM -0500, Maulik Mankad wrote:
How about adding two notifiers as below?
(1) The existing "otg" notifier that notifies about the VBUS presence
/ absence can be used to kick start charger type detection.
Since TWL interrupts happens in thread context this can remain as
a blocking notifier.
it's ok to call atomic_notifier() from a threaded_irq afaict.
(2) Another "current change" notifier that MUSB driver uses to notify
the current that battery driver can draw under various bus states like
USB_STATE_NOTATTACHED (0 mA), USB_STATE_SUSPENDED (< 2.5mA),
USB_STATE_DEFAULT (100 mA) and USB_STATE_CONFIGURED (<500 mA) which
needs to be an atomic notifier.
I think one notifier is enough, otherwise charger drivers will have to
listen to two notifiers.
--
balbi
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