===================================================================
@@ -280,6 +280,8 @@ struct dw_i2c_dev {
int (*acquire_lock)(struct dw_i2c_dev *dev);
void (*release_lock)(struct dw_i2c_dev *dev);
bool pm_disabled;
+ bool suspended;
+ bool skip_resume;
void (*disable)(struct dw_i2c_dev *dev);
void (*disable_int)(struct dw_i2c_dev *dev);
int (*init)(struct dw_i2c_dev *dev);
===================================================================
@@ -451,14 +451,21 @@ static void dw_i2c_plat_complete(struct
#endif
#ifdef CONFIG_PM
-static int dw_i2c_plat_runtime_suspend(struct device *dev)
+static int dw_i2c_plat_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct dw_i2c_dev *i_dev = platform_get_drvdata(pdev);
+ if (i_dev->suspended) {
+ i_dev->skip_resume = true;
+ return 0;
+ }
+
i_dev->disable(i_dev);
i2c_dw_plat_prepare_clk(i_dev, false);
+ i_dev->suspended = true;
+
return 0;
}
@@ -467,27 +474,27 @@ static int dw_i2c_plat_resume(struct dev
struct platform_device *pdev = to_platform_device(dev);
struct dw_i2c_dev *i_dev = platform_get_drvdata(pdev);
+ if (!i_dev->suspended)
+ return 0;
+
+ if (i_dev->skip_resume) {
+ i_dev->skip_resume = false;
+ return 0;
+ }
+
i2c_dw_plat_prepare_clk(i_dev, true);
i_dev->init(i_dev);
- return 0;
-}
+ i_dev->suspended = false;
-#ifdef CONFIG_PM_SLEEP
-static int dw_i2c_plat_suspend(struct device *dev)
-{
- pm_runtime_resume(dev);
- return dw_i2c_plat_runtime_suspend(dev);
+ return 0;
}
-#endif
static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
.prepare = dw_i2c_plat_prepare,
.complete = dw_i2c_plat_complete,
- SET_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
- SET_RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend,
- dw_i2c_plat_resume,
- NULL)
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
+ SET_RUNTIME_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume, NULL)
};
#define DW_I2C_DEV_PMOPS (&dw_i2c_dev_pm_ops)