diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-s3c2410.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index e6f982be89a..737f7218a32 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -31,6 +31,7 @@ #include <linux/errno.h> #include <linux/err.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/clk.h> #include <linux/cpufreq.h> #include <linux/slab.h> @@ -564,6 +565,7 @@ static int s3c24xx_i2c_xfer(struct i2c_adapter *adap, int retry; int ret; + pm_runtime_get_sync(&adap->dev); clk_enable(i2c->clk); for (retry = 0; retry < adap->retries; retry++) { @@ -572,6 +574,7 @@ static int s3c24xx_i2c_xfer(struct i2c_adapter *adap, if (ret != -EAGAIN) { clk_disable(i2c->clk); + pm_runtime_put_sync(&adap->dev); return ret; } @@ -581,6 +584,7 @@ static int s3c24xx_i2c_xfer(struct i2c_adapter *adap, } clk_disable(i2c->clk); + pm_runtime_put_sync(&adap->dev); return -EREMOTEIO; } @@ -1013,6 +1017,9 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) of_i2c_register_devices(&i2c->adap); platform_set_drvdata(pdev, i2c); + pm_runtime_enable(&pdev->dev); + pm_runtime_enable(&i2c->adap.dev); + dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev)); clk_disable(i2c->clk); return 0; @@ -1047,6 +1054,9 @@ static int s3c24xx_i2c_remove(struct platform_device *pdev) { struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev); + pm_runtime_disable(&i2c->adap.dev); + pm_runtime_disable(&pdev->dev); + s3c24xx_i2c_deregister_cpufreq(i2c); i2c_del_adapter(&i2c->adap); |