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Commit 6d8451d5 authored by Felipe Balbi's avatar Felipe Balbi Committed by Wolfram Sang
Browse files

i2c: omap: switch over to autosuspend API 



this helps us reduce unnecessary pm transitions
in case we have another i2c message starting soon.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
Signed-off-by: default avatarShubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: default avatarWolfram Sang <w.sang@pengutronix.de>
parent e3a36b20

drivers/i2c/busses/i2c-omap.c

+10 −2
Original line number Diff line number Diff line
@@ -55,6 +55,9 @@ 
/* timeout waiting for the controller to respond */

#define OMAP_I2C_TIMEOUT (msecs_to_jiffies(1000))



/* timeout for pm runtime autosuspend */

#define OMAP_I2C_PM_TIMEOUT		1000	/* ms */



/* For OMAP3 I2C_IV has changed to I2C_WE (wakeup enable) */

enum {

	OMAP_I2C_REV_REG = 0,
@@ -645,7 +648,8 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) 


	omap_i2c_wait_for_bb(dev);

out:

	pm_runtime_put(dev->dev);

	pm_runtime_mark_last_busy(dev->dev);

	pm_runtime_put_autosuspend(dev->dev);

	return r;

}
@@ -1113,6 +1117,9 @@ omap_i2c_probe(struct platform_device *pdev) 
		dev->regs = (u8 *)reg_map_ip_v1;



	pm_runtime_enable(dev->dev);

	pm_runtime_set_autosuspend_delay(dev->dev, OMAP_I2C_PM_TIMEOUT);

	pm_runtime_use_autosuspend(dev->dev);



	r = pm_runtime_get_sync(dev->dev);

	if (IS_ERR_VALUE(r))

		goto err_free_mem;
@@ -1190,7 +1197,8 @@ omap_i2c_probe(struct platform_device *pdev) 


	of_i2c_register_devices(adap);



	pm_runtime_put(dev->dev);

	pm_runtime_mark_last_busy(dev->dev);

	pm_runtime_put_autosuspend(dev->dev);



	return 0;