linux-kernel - [PATCH 3/7] pwm: pwm-tiehrpwm: Update the clock handling of pwm-tiehrpwm driver

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Message-ID: <1357133094-30806-4-git-send-email-avinashphilip@ti.com>
Date:	Wed, 2 Jan 2013 18:54:50 +0530
From:	Philip Avinash <avinashphilip@...com>
To:	<tony@...mide.com>, <paul@...an.com>, <linux@....linux.org.uk>,
	<b-cousson@...com>
CC:	<hvaibhav@...com>, <anilkumar@...com>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <nsekhar@...com>,
	<gururaja.hebbar@...com>, <vaibhav.bedia@...com>,
	Philip Avinash <avinashphilip@...com>,
	Thierry Reding <thierry.reding@...onic-design.de>
Subject: [PATCH 3/7] pwm: pwm-tiehrpwm: Update the clock handling of pwm-tiehrpwm driver

The clock framework has changed and it's now better to invoke
clock_prepare_enable() and clk_disable_unprepare() rather than the
legacy clk_enable() and clk_disable() calls. This patch converts the
pwm-tiehrpwm driver to the new framework.

Signed-off-by: Philip Avinash <avinashphilip@...com>
Cc: Thierry Reding <thierry.reding@...onic-design.de>
---
In 3.8-rc1, common clock frame work support added to AM335x.

 drivers/pwm/pwm-tiehrpwm.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index 72a6dd4..af6f162 100644
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -341,7 +341,7 @@ static int ehrpwm_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 	configure_polarity(pc, pwm->hwpwm);
 
 	/* Enable TBCLK before enabling PWM device */
-	clk_enable(pc->tbclk);
+	clk_prepare_enable(pc->tbclk);
 
 	/* Enable time counter for free_run */
 	ehrpwm_modify(pc->mmio_base, TBCTL, TBCTL_RUN_MASK, TBCTL_FREE_RUN);
@@ -372,7 +372,7 @@ static void ehrpwm_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
 	ehrpwm_modify(pc->mmio_base, AQCSFRC, aqcsfrc_mask, aqcsfrc_val);
 
 	/* Disabling TBCLK on PWM disable */
-	clk_disable(pc->tbclk);
+	clk_disable_unprepare(pc->tbclk);
 
 	/* Stop Time base counter */
 	ehrpwm_modify(pc->mmio_base, TBCTL, TBCTL_RUN_MASK, TBCTL_STOP_NEXT);
-- 
1.7.9.5

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