John Baldwin 13e3657b7b Add locking to the various iicbus(4) bridge drivers: ... - Just grab Giant in the ixp425_iic(4) driver since this driver uses a shared address/data register window pair to access the actual I2C registers. None of the other ixp425 drivers lock access to these shared address/data registers yet and that would need to be done before this could use any meaningful locking. - Add locking to the interrupt handler and 'iicbus_reset' methods of the at91_twi(4) driver. - Add locking to the pcf(4) driver. Other pcf(4) fixes include: - Don't needlessly zero the softc. - Use bus_foo rather than bus_space_foo and remove bus space tag and handle from softc. - The lpbb(4) driver just grabs Giant for now. This will be refined later when ppbus(4) is locked. - As was done with smbus earlier, move the DRIVER_MODULE() lines to match the bus driver (either iicbus or iicbb) to the bridge driver into the bridge drivers. Tested by: sam (arm/ixp425)		2008-08-04 20:46:15 +00:00
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arm	Do not modify td->td_intr_nesting_level, it is now done in the MI code.	2008-08-04 20:29:39 +00:00
at91	Add locking to the various iicbus(4) bridge drivers:	2008-08-04 20:46:15 +00:00
compile	Don't need the .keep_me files. Obrien and I committed past each other.	2001-07-01 23:35:44 +00:00
conf	Disconnect drivers that haven't been ported to MPSAFE TTY yet.	2008-08-03 10:32:17 +00:00
include	Add "add pc, whatever" as a branch instruction, we use it in memcpy().	2008-08-03 15:35:32 +00:00
sa11x0	Now that all platforms use genclock, shuffle things around slightly	2008-04-22 19:38:30 +00:00
xscale	Add locking to the various iicbus(4) bridge drivers:	2008-08-04 20:46:15 +00:00