linux-kernel - [PATCH v2 1/5] ARM: sa1100: add platform functions to handle PWER settings

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Date:	Fri, 30 Jan 2015 23:01:02 +0300
From:	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
To:	Russell King <linux@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Andrea Adami <andrea.adami@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/5] ARM: sa1100: add platform functions to handle PWER settings

PWER settings logically belongs neither to GPIO nor to system IRQ code.
Add special functions to handle PWER (for GPIO and for system IRQs)
from platform code.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
---
 arch/arm/mach-sa1100/generic.c | 24 ++++++++++++++++++++++++
 include/soc/sa1100/pwer.h      | 15 +++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 include/soc/sa1100/pwer.h

diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index 40e0d86..c651f6e 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -23,6 +23,8 @@
 
 #include <video/sa1100fb.h>
 
+#include <soc/sa1100/pwer.h>
+
 #include <asm/div64.h>
 #include <asm/mach/map.h>
 #include <asm/mach/flash.h>
@@ -416,3 +418,25 @@ void sa1110_mb_enable(void)
 	local_irq_restore(flags);
 }
 
+int sa11x0_gpio_set_wake(unsigned int gpio, unsigned int on)
+{
+	if (on)
+		PWER |= BIT(gpio);
+	else
+		PWER &= ~BIT(gpio);
+
+	return 0;
+}
+
+int sa11x0_sc_set_wake(unsigned int irq, unsigned int on)
+{
+	if (BIT(irq) != IC_RTCAlrm)
+		return -EINVAL;
+
+	if (on)
+		PWER |= PWER_RTC;
+	else
+		PWER &= ~PWER_RTC;
+
+	return 0;
+}
diff --git a/include/soc/sa1100/pwer.h b/include/soc/sa1100/pwer.h
new file mode 100644
index 0000000..15a545b
--- /dev/null
+++ b/include/soc/sa1100/pwer.h
@@ -0,0 +1,15 @@
+#ifndef SOC_SA1100_PWER_H
+#define SOC_SA1100_PWER_H
+
+/*
+ * Copyright (C) 2015, Dmitry Eremin-Solenikov
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+int sa11x0_gpio_set_wake(unsigned int gpio, unsigned int on);
+int sa11x0_sc_set_wake(unsigned int irq, unsigned int on);
+
+#endif
-- 
2.1.4

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