android_kernel_samsung_msm8976/drivers/mfd
Russell King 9ded96f24c [PATCH] IRQ type flags
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: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:46 -08:00
..
Kconfig [MFD] Add code UCB1200/UCB1300 touchscreen support 2005-09-11 10:26:57 +01:00
Makefile [MFD] Add code UCB1200/UCB1300 assabet platform support 2005-09-11 10:27:23 +01:00
mcp-core.c [PATCH] fix remaining missing includes 2005-11-07 07:53:41 -08:00
mcp-sa11x0.c [DRIVER MODEL] Convert platform drivers to use struct platform_driver 2005-11-09 22:32:44 +00:00
mcp.h [MFD] Add multimedia communication port core support 2005-08-18 10:06:59 +01:00
ucb1x00-assabet.c [MFD] Add code UCB1200/UCB1300 assabet platform support 2005-09-11 10:27:23 +01:00
ucb1x00-core.c [PATCH] IRQ type flags 2006-01-08 20:13:46 -08:00
ucb1x00-ts.c [PATCH] input: fix ucb1x00-ts breakage after conversion to dynamic input_dev allocation 2005-12-12 08:57:45 -08:00
ucb1x00.h [MFD] Fix gcc4 build errors in ucb1x00-core.c 2005-10-06 13:09:42 +01:00