[PATCH v4 3/5(7)] OMAP1: Amstrad Delta: use FIQ for processing GPIO interrupts

[Janusz Krzysztofik]

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 GPIO generated interrupts, including a keyboard serial clock 
line.

Created and tested against linux-omap master, 
commit 104a77440f05430f29f9d3f4ecb88c1536819585 dated 2010-04-27.

Compiles and works on top of PATCH v4 2/5(7), "OMAP1: Amstrad Delta: add a 
handler for processing interrupts generated by the FIQ routine". Also requires 
PATCH v4 2.1/5(7), "OMAP1: Amstrad Delta: update board initialization code 
for complete modem IRQ GPIO line setup" for correct modem handling.

Compile tested with a bunch of OMAP15XX/OMAP16XX boards selected 
simultaneously.

Signed-off-by: Janusz Krzysztofik <jkrzyszt at tis.icnet.pl>
---
v2 changes:
- no functional changes,
- refreshed against linux-2.6.34-rc2.
v3 changes:
- drop intermediate defconfig modification.
v4 changes: none.

 arch/arm/mach-omap1/board-ams-delta.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- git.orig/arch/arm/mach-omap1/board-ams-delta.c	2010-04-27 22:36:01.000000000 +0200
+++ git/arch/arm/mach-omap1/board-ams-delta.c	2010-04-27 22:36:18.000000000 +0200
@@ -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);
 }