* @msg_buf_remaining: size of unsent data in the message buffer
* @msg_read: identifies read transfers
* @bus_clk_rate: current i2c bus clock rate
- * @is_suspended: prevents i2c controller accesses after suspend is called
*/
struct tegra_i2c_dev {
struct device *dev;
int msg_read;
u32 bus_clk_rate;
u16 clk_divisor_non_hs_mode;
- bool is_suspended;
bool is_multimaster_mode;
spinlock_t xfer_lock;
};
int i;
int ret = 0;
- if (i2c_dev->is_suspended)
- return -EBUSY;
-
ret = pm_runtime_get_sync(i2c_dev->dev);
if (ret < 0) {
dev_err(i2c_dev->dev, "runtime resume failed %d\n", ret);
}
#ifdef CONFIG_PM_SLEEP
-static int tegra_i2c_suspend(struct device *dev)
-{
- struct tegra_i2c_dev *i2c_dev = dev_get_drvdata(dev);
-
- i2c_lock_adapter(&i2c_dev->adapter);
- i2c_dev->is_suspended = true;
- i2c_unlock_adapter(&i2c_dev->adapter);
-
- return 0;
-}
-
-static int tegra_i2c_resume(struct device *dev)
-{
- struct tegra_i2c_dev *i2c_dev = dev_get_drvdata(dev);
- int ret;
-
- i2c_lock_adapter(&i2c_dev->adapter);
-
- ret = tegra_i2c_init(i2c_dev);
- if (!ret)
- i2c_dev->is_suspended = false;
-
- i2c_unlock_adapter(&i2c_dev->adapter);
-
- return ret;
-}
-
static const struct dev_pm_ops tegra_i2c_pm = {
SET_RUNTIME_PM_OPS(tegra_i2c_runtime_suspend, tegra_i2c_runtime_resume,
NULL)
- SET_SYSTEM_SLEEP_PM_OPS(tegra_i2c_suspend, tegra_i2c_resume)
};
#define TEGRA_I2C_PM (&tegra_i2c_pm)
#else