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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/arm/mach-kirkwood/irq.c
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/arm/mach-kirkwood/irq.c')
-rw-r--r--arch/arm/mach-kirkwood/irq.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-kirkwood/irq.c b/arch/arm/mach-kirkwood/irq.c
new file mode 100644
index 00000000000..c4c68e5b94f
--- /dev/null
+++ b/arch/arm/mach-kirkwood/irq.c
@@ -0,0 +1,48 @@
+/*
+ * arch/arm/mach-kirkwood/irq.c
+ *
+ * Kirkwood IRQ handling.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+#include <linux/gpio.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <mach/bridge-regs.h>
+#include <plat/irq.h>
+#include "common.h"
+
+static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
+{
+ BUG_ON(irq < IRQ_KIRKWOOD_GPIO_LOW_0_7);
+ BUG_ON(irq > IRQ_KIRKWOOD_GPIO_HIGH_16_23);
+
+ orion_gpio_irq_handler((irq - IRQ_KIRKWOOD_GPIO_LOW_0_7) << 3);
+}
+
+void __init kirkwood_init_irq(void)
+{
+ orion_irq_init(0, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF));
+ orion_irq_init(32, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF));
+
+ /*
+ * Initialize gpiolib for GPIOs 0-49.
+ */
+ orion_gpio_init(0, 32, GPIO_LOW_VIRT_BASE, 0,
+ IRQ_KIRKWOOD_GPIO_START);
+ irq_set_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_0_7, gpio_irq_handler);
+ irq_set_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_8_15, gpio_irq_handler);
+ irq_set_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_16_23, gpio_irq_handler);
+ irq_set_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_24_31, gpio_irq_handler);
+
+ orion_gpio_init(32, 18, GPIO_HIGH_VIRT_BASE, 0,
+ IRQ_KIRKWOOD_GPIO_START + 32);
+ irq_set_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_0_7, gpio_irq_handler);
+ irq_set_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_8_15, gpio_irq_handler);
+ irq_set_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_16_23,
+ gpio_irq_handler);
+}