LinuxPPC-Dev Archive on lore.kernel.org

* [PATCH 7/7] P2020ds: add event button handler
From: Li Yang @ 2010-12-03 12:34 UTC (permalink / raw)
  To: linuxppc-dev
In-Reply-To: <1291379651-8822-6-git-send-email-leoli@freescale.com>

This can be used as a wakeup source for power management.

Signed-off-by: Li Yang <leoli@freescale.com>
---
 arch/powerpc/boot/dts/p2020ds.dts        |    9 ++++++++-
 arch/powerpc/platforms/85xx/mpc85xx_ds.c |   26 +++++++++++++++++++++++++-
 2 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/boot/dts/p2020ds.dts b/arch/powerpc/boot/dts/p2020ds.dts
index 1101914..f4c6520 100644
--- a/arch/powerpc/boot/dts/p2020ds.dts
+++ b/arch/powerpc/boot/dts/p2020ds.dts
@@ -1,7 +1,7 @@
 /*
  * P2020 DS Device Tree Source
  *
- * Copyright 2009 Freescale Semiconductor Inc.
+ * Copyright 2009-2010 Freescale Semiconductor Inc.
  *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
@@ -155,6 +155,13 @@
 			compatible = "fsl,elbc-fcm-nand";
 			reg = <0x6 0x0 0x40000>;
 		};
+
+		ngpixis@3,0 {
+			compatible = "fsl,p2020ds-fpga";
+			reg = <0x3 0 0x30>;
+			interrupt-parent = <&mpic>;
+			interrupts = <0 0>;
+		};
 	};
 
 	soc@ffe00000 {
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
index 8190bc2..a8807fe 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
@@ -4,7 +4,7 @@
  * Author Xianghua Xiao (x.xiao@freescale.com)
  * Roy Zang <tie-fei.zang@freescale.com>
  * 	- Add PCI/PCI Exprees support
- * Copyright 2007 Freescale Semiconductor Inc.
+ * Copyright 2007-2010 Freescale Semiconductor Inc.
  *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
@@ -200,6 +200,30 @@ static void __init mpc85xx_ds_setup_arch(void)
 	printk("MPC85xx DS board from Freescale Semiconductor\n");
 }
 
+static irqreturn_t event_isr(int irq, void *dev_id)
+{
+
+	printk(KERN_INFO "MPC85xxDS: Event button been pushed.\n");
+	return IRQ_HANDLED;
+}
+
+static int __init p2020ds_ngpixis_init(void)
+{
+	int event_irq, ret;
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,p2020ds-fpga");
+	if (np) {
+		event_irq = irq_of_parse_and_map(np, 0);
+		ret = request_irq(event_irq, event_isr, 0, "event", NULL);
+		if (ret)
+			printk(KERN_ERR "Can't request board event int\n");
+		of_node_put(np);
+	}
+	return 0;
+}
+machine_device_initcall(p2020_ds, p2020ds_ngpixis_init);
+
 /*
  * Called very early, device-tree isn't unflattened
  */
-- 
1.6.6-rc1.GIT

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