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From: Murali Karicheri <m-karicheri2-l0cyMroinI0@public.gmane.org>
To: nsekhar-l0cyMroinI0@public.gmane.org,
	khilman-l0cyMroinI0@public.gmane.org,
	khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org,
	ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org,
	w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
	davinci-linux-open-source-VycZQUHpC/PFrsHnngEfi1aTQe2KTcn/@public.gmane.org,
	linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] i2c:clk: preparation for switch to common clock framework
Date: Thu, 30 Aug 2012 14:10:36 -0400	[thread overview]
Message-ID: <1346350236-11105-1-git-send-email-m-karicheri2@ti.com> (raw)

As a first step towards migrating davinci platforms to use common clock
framework, replace all instances of clk_enable() with clk_prepare_enable()
and clk_disable() with clk_disable_unprepare(). Until the platform is
switched to use the CONFIG_HAVE_CLK_PREPARE Kconfig variable, this just
adds a might_sleep() call and would work without any issues.

This will make it easy later to switch to common clk based implementation
of clk driver from DaVinci specific driver.

Signed-off-by: Murali Karicheri <m-karicheri2-l0cyMroinI0@public.gmane.org>
---
 drivers/i2c/busses/i2c-davinci.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 79b4bcb..8e47ec1 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -681,7 +681,7 @@ static int davinci_i2c_probe(struct platform_device *pdev)
 		r = -ENODEV;
 		goto err_free_mem;
 	}
-	clk_enable(dev->clk);
+	clk_prepare_enable(dev->clk);
 
 	dev->base = ioremap(mem->start, resource_size(mem));
 	if (!dev->base) {
@@ -726,7 +726,7 @@ err_free_irq:
 err_unuse_clocks:
 	iounmap(dev->base);
 err_mem_ioremap:
-	clk_disable(dev->clk);
+	clk_disable_unprepare(dev->clk);
 	clk_put(dev->clk);
 	dev->clk = NULL;
 err_free_mem:
@@ -750,7 +750,7 @@ static int davinci_i2c_remove(struct platform_device *pdev)
 	i2c_del_adapter(&dev->adapter);
 	put_device(&pdev->dev);
 
-	clk_disable(dev->clk);
+	clk_disable_unprepare(dev->clk);
 	clk_put(dev->clk);
 	dev->clk = NULL;
 
@@ -772,7 +772,7 @@ static int davinci_i2c_suspend(struct device *dev)
 
 	/* put I2C into reset */
 	davinci_i2c_reset_ctrl(i2c_dev, 0);
-	clk_disable(i2c_dev->clk);
+	clk_disable_unprepare(i2c_dev->clk);
 
 	return 0;
 }
@@ -782,7 +782,7 @@ static int davinci_i2c_resume(struct device *dev)
 	struct platform_device *pdev = to_platform_device(dev);
 	struct davinci_i2c_dev *i2c_dev = platform_get_drvdata(pdev);
 
-	clk_enable(i2c_dev->clk);
+	clk_prepare_enable(i2c_dev->clk);
 	/* take I2C out of reset */
 	davinci_i2c_reset_ctrl(i2c_dev, 1);
 
-- 
1.7.9.5

             reply	other threads:[~2012-08-30 18:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-30 18:10 Murali Karicheri [this message]
     [not found] ` <1346350236-11105-1-git-send-email-m-karicheri2-l0cyMroinI0@public.gmane.org>
2012-09-13  9:29   ` i2c:clk: preparation for switch to common clock framework Wolfram Sang
     [not found]     ` <20120913092943.GA5912-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2012-09-13 18:44       ` Karicheri, Muralidharan

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