Re: [PATCH] irqchip: add support for Marvell Orion SoCs

From: Sebastian Hesselbarth
Date: Thu May 02 2013 - 14:54:31 EST


On 05/02/13 20:45, Russell King - ARM Linux wrote:
On Thu, May 02, 2013 at 08:33:48PM +0200, Sebastian Hesselbarth wrote:
On 05/02/2013 08:25 PM, Sebastian Hesselbarth wrote:
This patch adds an irqchip driver for the main interrupt controller found
on Marvell Orion SoCs (Kirkwood, Dove, Orion5x, Discovery Innovation).
Corresponding device tree documentation is also added.

Signed-off-by: Sebastian Hesselbarth<sebastian.hesselbarth@xxxxxxxxx>
---
Note: This patch triggers a checkpatch warning for
WARNING: Avoid CamelCase:<handle_IRQ>

[...]
diff --git a/include/linux/irqchip/orion.h b/include/linux/irqchip/orion.h
new file mode 100644
index 0000000..04f7bab
--- /dev/null
+++ b/include/linux/irqchip/orion.h
@@ -0,0 +1,18 @@
+/*
+ * Marvell Orion SoCs IRQ chip driver header.
+ *
+ * Sebastian Hesselbarth<sebastian.hesselbarth@xxxxxxxxx>
+ *
+ * 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.
+ */
+
+#ifndef __LINUX_IRQCHIP_ORION_H
+#define __LINUX_IRQCHIP_ORION_H
+
+#include<asm/exception.h>

First review by myself. The above include is a left-over and
will be removed in a v2.

You still need your first level IRQ handlers marked with __exception_irq_entry
which is defined in the above file.


Russell,

I know and it is marked with __exception_irq_entry. The above is in
include/linux/irqchip/orion.h and only used for .init_irq in machine
descriptor later.

The irq handler is never exposed to the board file itself, but set
within orion_init_irq. This approach has been taked by
irqchip/irq-gic.c and irqchip/irq-vic.c rather than adding
.handle_irq to the machine descriptor.

Sebastian
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