linux-kernel - [PATCH 1/8] ARM: OMAP2+: timer: Add a powerup function

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Message-ID: <1398216429-4681-2-git-send-email-joelf@ti.com>
Date:	Tue, 22 Apr 2014 20:27:02 -0500
From:	Joel Fernandes <joelf@...com>
To:	Tony Lindgren <tony@...mide.com>,
	Rob Herring <rob.herring@...xeda.com>,
	Linux OMAP List <linux-omap@...r.kernel.org>,
	Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	Joel Fernandes <joelf@...com>
Subject: [PATCH 1/8] ARM: OMAP2+: timer: Add a powerup function

In an effort to isolate the time power initialization for future purposes, add
a function to do the same. This primarily involves a hwmod lookup, setup and
enable.

Signed-off-by: Joel Fernandes <joelf@...com>
---
 arch/arm/mach-omap2/timer.c |   25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index dfb19df..ec427e6 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -210,6 +210,31 @@ static void __init omap_dmtimer_init(void)
 	}
 }
 
+int __init omap_dmtimer_powerup(struct device_node *np)
+{
+	struct omap_hwmod *oh;
+	const char *oh_name = NULL;
+	int ret;
+
+	of_property_read_string_index(np, "ti,hwmods", 0, &oh_name);
+	if (!oh_name)
+		return -ENODEV;
+
+	oh = omap_hwmod_lookup(oh_name);
+	if (!oh)
+		return -ENODEV;
+
+	ret = omap_hwmod_setup_one(oh_name);
+	if (ret)
+		return ret;
+
+	ret = omap_hwmod_enable(oh);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
 /**
  * omap_dm_timer_get_errata - get errata flags for a timer
  *
-- 
1.7.9.5

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