Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d1471f02 authored by Joonyoung Shim's avatar Joonyoung Shim Committed by Mauro Carvalho Chehab
Browse files

V4L/DVB (13601): radio-si470x: support PM functions 



This patch is to support PM of the si470x i2c driver.

Signed-off-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
Acked-by: default avatarTobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: default avatarDouglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent fe2137dd

drivers/media/radio/si470x/radio-si470x-i2c.c

+40 −0
Original line number Diff line number Diff line
@@ -487,6 +487,44 @@ static __devexit int si470x_i2c_remove(struct i2c_client *client) 
}





#ifdef CONFIG_PM

/*

 * si470x_i2c_suspend - suspend the device

 */

static int si470x_i2c_suspend(struct i2c_client *client, pm_message_t mesg)

{

	struct si470x_device *radio = i2c_get_clientdata(client);



	/* power down */

	radio->registers[POWERCFG] |= POWERCFG_DISABLE;

	if (si470x_set_register(radio, POWERCFG) < 0)

		return -EIO;



	return 0;

}





/*

 * si470x_i2c_resume - resume the device

 */

static int si470x_i2c_resume(struct i2c_client *client)

{

	struct si470x_device *radio = i2c_get_clientdata(client);



	/* power up : need 110ms */

	radio->registers[POWERCFG] |= POWERCFG_ENABLE;

	if (si470x_set_register(radio, POWERCFG) < 0)

		return -EIO;

	msleep(110);



	return 0;

}

#else

#define si470x_i2c_suspend	NULL

#define si470x_i2c_resume	NULL

#endif





/*

 * si470x_i2c_driver - i2c driver interface

 */
@@ -497,6 +535,8 @@ static struct i2c_driver si470x_i2c_driver = { 
	},

	.probe			= si470x_i2c_probe,

	.remove			= __devexit_p(si470x_i2c_remove),

	.suspend		= si470x_i2c_suspend,

	.resume			= si470x_i2c_resume,

	.id_table		= si470x_i2c_id,

};