linux-kernel - [PATCH 5/8] ARM: OMAP2+: timer: Use of_clk

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Date:	Tue, 22 Apr 2014 20:27:06 -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 5/8] ARM: OMAP2+: timer: Use of_clk_get for DT platforms

For DT-booting platforms, use of_clk_get to get the fclk for system timers.
Separate out the legacy code for non-DT platform use.

Signed-off-by: Joel Fernandes <joelf@...com>
---
 arch/arm/mach-omap2/timer.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index ea91ef9..4fcfd7a 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -277,6 +277,10 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
 		if (!timer->io_base)
 			return -ENXIO;
 
+		timer->fclk = of_clk_get(np, 0);
+		if (IS_ERR(timer->fclk))
+			return PTR_ERR(timer->fclk);
+
 		r = omap_dmtimer_powerup(np);
 		if (r)
 			return r;
@@ -308,14 +312,13 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
 		if (!timer->io_base)
 			return -ENXIO;
 
+		timer->fclk = clk_get(NULL, omap_hwmod_get_main_clk(oh));
+		if (IS_ERR(timer->fclk))
+			return PTR_ERR(timer->fclk);
 
 		omap_hwmod_setup_one(oh_name);
 		omap_hwmod_enable(oh);
 	}
-	/* After the dmtimer is using hwmod these clocks won't be needed */
-	timer->fclk = clk_get(NULL, omap_hwmod_get_main_clk(oh));
-	if (IS_ERR(timer->fclk))
-		return PTR_ERR(timer->fclk);
 
 	/*
 	 * Clock reparenting code, goes away for DT-boot atleast,
-- 
1.7.9.5

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