[RFC][PATCH 3/5] omap1: Amstrad Delta: use FIQ for processing MPU GPIO interrupts

[Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>]

The patch adds initialization of FIQ related handlers to the Amstrad Delta
videophone board code. FIQ will be used instead of a traditional IRQ for
processing all MPU GPIO generated interrupts, including a keyboard serial
clock line.

Amstrad Delta defconfig is modified to use FIQ by default.

Compiles and works on top of patch 2/5: omap1: Amstrad Delta: add a handler
for processing interrupts generated by the FIQ routine

Created and tested against linux-omap for-next,
commit 82f1d8f22f2c65e70206e40a6f17688bf64a892c dated 2009-12-02.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>

---

 arch/arm/configs/ams_delta_defconfig  |    1 +
 arch/arm/mach-omap1/board-ams-delta.c |    6 ++++++
 2 files changed, 7 insertions(+)

diff -upr git.orig/arch/arm/configs/ams_delta_defconfig git/arch/arm/configs/ams_delta_defconfig
--- git.orig/arch/arm/configs/ams_delta_defconfig	2009-12-10 01:36:57.000000000 +0100
+++ git/arch/arm/configs/ams_delta_defconfig	2009-12-10 11:20:50.000000000 +0100
@@ -195,6 +195,7 @@ CONFIG_ARCH_OMAP15XX=y
 # CONFIG_MACH_OMAP_PALMTT is not set
 # CONFIG_MACH_SX1 is not set
 CONFIG_MACH_AMS_DELTA=y
+CONFIG_AMS_DELTA_FIQ=y
 # CONFIG_MACH_OMAP_GENERIC is not set
 
 #
diff -upr git.orig/arch/arm/mach-omap1/board-ams-delta.c git/arch/arm/mach-omap1/board-ams-delta.c
--- git.orig/arch/arm/mach-omap1/board-ams-delta.c	2009-12-02 15:48:37.000000000 +0100
+++ git/arch/arm/mach-omap1/board-ams-delta.c	2009-12-10 11:20:50.000000000 +0100
@@ -33,6 +33,8 @@
 #include <plat/board.h>
 #include <plat/common.h>
 
+#include <mach/ams-delta-fiq.h>
+
 static u8 ams_delta_latch1_reg;
 static u16 ams_delta_latch2_reg;
 
@@ -236,6 +238,10 @@ static void __init ams_delta_init(void)
 	omap_usb_init(&ams_delta_usb_config);
 	platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
 
+#ifdef CONFIG_AMS_DELTA_FIQ
+	ams_delta_init_fiq();
+#endif
+
 	omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
 }