From 60c3bf3f1215453a4f30f0b91db7fd301d558693 Mon Sep 17 00:00:00 2001 From: Janusz Krzysztofik Date: Wed, 28 Apr 2010 01:01:29 +0000 Subject: OMAP1: Amstrad Delta: add FIQ handler for serial keyboardport interrupt processing This patch introduces a Fast Interrupt Request (FIQ) handler for Amstrad Delta (E3) videophone. The handler's purpose is to process interrupts generated by a GPIO line that a serial keyboard clock hangs off. It collects consecutive bits into words, pushing them into a buffer, then requests a higher level interrupt after one or more words are ready for further processing by a keyboard port driver. The handler also processes interrupts generated by two other GPIO lines, used by other on-board supported devices, by simply requesting a higher level interrupt, that in turn should invoke those device's specific irq handlers. IRQ12 line, not used by OMAP1510 hardware (described as reserved), has been choosen as a higher level interrupt source. Signed-off-by: Janusz Krzysztofik Signed-off-by: Tony Lindgren --- arch/arm/mach-omap1/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/arm/mach-omap1/Kconfig') diff --git a/arch/arm/mach-omap1/Kconfig b/arch/arm/mach-omap1/Kconfig index 27f489747bbd..b18d7c28ab7a 100644 --- a/arch/arm/mach-omap1/Kconfig +++ b/arch/arm/mach-omap1/Kconfig @@ -152,6 +152,16 @@ config MACH_AMS_DELTA Support for the Amstrad E3 (codename Delta) videophone. Say Y here if you have such a device. +config AMS_DELTA_FIQ + bool "Fast Interrupt Request (FIQ) support for the E3" + depends on MACH_AMS_DELTA + select FIQ + help + Provide a FIQ handler for the E3. + This allows for fast handling of interrupts generated + by the clock line of the E3 mailboard (or a PS/2 keyboard) + connected to the GPIO based external keyboard port. + config MACH_OMAP_GENERIC bool "Generic OMAP board" depends on ARCH_OMAP1 && (ARCH_OMAP15XX || ARCH_OMAP16XX) -- cgit