ARM: plat-versatile: move FPGA irq driver to drivers/irqchip

This moves the Versatile FPGA interrupt controller driver, used in
the Integrator/AP, Integrator/CP and some Versatile boards, out
of arch/arm/plat-versatile and down to drivers/irqchip where we
have consensus that such drivers belong. The header file is
consequently moved to <linux/platform_data/irq-versatile-fpga.h>.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

10 files changed, 16 insertions, 19 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 73067efd4845..2205e3eb55bf 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -284,8 +284,8 @@ config ARCH_INTEGRATOR
 	select MULTI_IRQ_HANDLER
 	select NEED_MACH_MEMORY_H
 	select PLAT_VERSATILE
-	select PLAT_VERSATILE_FPGA_IRQ
 	select SPARSE_IRQ
+	select VERSATILE_FPGA_IRQ
 	help
 	  Support for ARM's Integrator platform.
 
@@ -318,7 +318,7 @@ config ARCH_VERSATILE
 	select PLAT_VERSATILE
 	select PLAT_VERSATILE_CLCD
 	select PLAT_VERSATILE_CLOCK
-	select PLAT_VERSATILE_FPGA_IRQ
+	select VERSATILE_FPGA_IRQ
 	help
 	  This enables support for ARM Ltd Versatile board.
 
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 4f13bc57e5a4..e67a9fe18d1b 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -31,6 +31,7 @@
 #include <linux/clockchips.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/irqchip/versatile-fpga.h>
 #include <linux/mtd/physmap.h>
 #include <linux/clk.h>
 #include <linux/platform_data/clk-integrator.h>
@@ -56,8 +57,6 @@
 #include <asm/mach/pci.h>
 #include <asm/mach/time.h>
 
-#include <plat/fpga-irq.h>
-
 #include "common.h"
 
 /* 
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 4423bc8e84c5..acecf04f50f7 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -20,6 +20,7 @@
 #include <linux/amba/clcd.h>
 #include <linux/amba/mmci.h>
 #include <linux/io.h>
+#include <linux/irqchip/versatile-fpga.h>
 #include <linux/gfp.h>
 #include <linux/mtd/physmap.h>
 #include <linux/platform_data/clk-integrator.h>
@@ -46,7 +47,6 @@
 #include <asm/hardware/timer-sp.h>
 
 #include <plat/clcd.h>
-#include <plat/fpga-irq.h>
 #include <plat/sched_clock.h>
 
 #include "common.h"
diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index 5b5c1eeb5b5c..5d5929450366 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -32,6 +32,7 @@
 #include <linux/amba/mmci.h>
 #include <linux/amba/pl022.h>
 #include <linux/io.h>
+#include <linux/irqchip/versatile-fpga.h>
 #include <linux/gfp.h>
 #include <linux/clkdev.h>
 #include <linux/mtd/physmap.h>
@@ -51,7 +52,6 @@
 #include <asm/hardware/timer-sp.h>
 
 #include <plat/clcd.h>
-#include <plat/fpga-irq.h>
 #include <plat/sched_clock.h>
 
 #include "core.h"
diff --git a/arch/arm/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index 2a4ae8a6a081..619f0fa0f06c 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -6,15 +6,6 @@ config PLAT_VERSATILE_CLOCK
 config PLAT_VERSATILE_CLCD
 	bool
 
-config PLAT_VERSATILE_FPGA_IRQ
-	bool
-	select IRQ_DOMAIN
-
-config PLAT_VERSATILE_FPGA_IRQ_NR
-       int
-       default 4
-       depends on PLAT_VERSATILE_FPGA_IRQ
-
 config PLAT_VERSATILE_LEDS
 	def_bool y if NEW_LEDS
 	depends on ARCH_REALVIEW || ARCH_VERSATILE
diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
index 74cfd94cbf80..f88d448b629c 100644
--- a/arch/arm/plat-versatile/Makefile
+++ b/arch/arm/plat-versatile/Makefile
@@ -2,7 +2,6 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include
 
 obj-$(CONFIG_PLAT_VERSATILE_CLOCK) += clock.o
 obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o
-obj-$(CONFIG_PLAT_VERSATILE_FPGA_IRQ) += fpga-irq.o
 obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o
 obj-$(CONFIG_PLAT_VERSATILE_SCHED_CLOCK) += sched-clock.o
 obj-$(CONFIG_SMP) += headsmp.o platsmp.o
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 1bb8bf6d7fd4..62ca575701d3 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -1 +1,8 @@
-# empty
+config VERSATILE_FPGA_IRQ
+	bool
+	select IRQ_DOMAIN
+
+config VERSATILE_FPGA_IRQ_NR
+       int
+       default 4
+       depends on VERSATILE_FPGA_IRQ
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 054321db4350..e2e6eb5d32f4 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -1 +1,2 @@
 obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o
+obj-$(CONFIG_VERSATILE_FPGA_IRQ) += irq-versatile-fpga.o
diff --git a/arch/arm/plat-versatile/fpga-irq.c b/drivers/irqchip/irq-versatile-fpga.c
index dfe317c20354..789b3e526930 100644
--- a/arch/arm/plat-versatile/fpga-irq.c
+++ b/drivers/irqchip/irq-versatile-fpga.c
@@ -4,6 +4,7 @@
 #include <linux/bitops.h>
 #include <linux/irq.h>
 #include <linux/io.h>
+#include <linux/irqchip/versatile-fpga.h>
 #include <linux/irqdomain.h>
 #include <linux/module.h>
 #include <linux/of.h>
@@ -11,7 +12,6 @@
 
 #include <asm/exception.h>
 #include <asm/mach/irq.h>
-#include <plat/fpga-irq.h>
 
 #define IRQ_STATUS		0x00
 #define IRQ_RAW_STATUS		0x04
@@ -42,7 +42,7 @@ struct fpga_irq_data {
 };
 
 /* we cannot allocate memory when the controllers are initially registered */
-static struct fpga_irq_data fpga_irq_devices[CONFIG_PLAT_VERSATILE_FPGA_IRQ_NR];
+static struct fpga_irq_data fpga_irq_devices[CONFIG_VERSATILE_FPGA_IRQ_NR];
 static int fpga_irq_id;
 
 static void fpga_irq_mask(struct irq_data *d)
diff --git a/arch/arm/plat-versatile/include/plat/fpga-irq.h b/include/linux/irqchip/versatile-fpga.h
index 1fac9651d3ca..1fac9651d3ca 100644
--- a/arch/arm/plat-versatile/include/plat/fpga-irq.h
+++ b/include/linux/irqchip/versatile-fpga.h