#include <linux/clk.h>
#include <linux/completion.h>
#include <linux/i2c.h>
+#include <linux/i2c-smbus.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
struct device *dev;
struct i2c_adapter adapter;
struct completion msg_complete;
+ struct i2c_smbus_alert_setup alert_data;
+ struct i2c_client *ara;
int irq;
bool msg_read;
bool len_recv;
return 0;
}
+static int xlp9xx_i2c_smbus_setup(struct xlp9xx_i2c_dev *priv,
+ struct platform_device *pdev)
+{
+ if (!priv->alert_data.irq)
+ return -EINVAL;
+
+ priv->ara = i2c_setup_smbus_alert(&priv->adapter, &priv->alert_data);
+ if (!priv->ara)
+ return -ENODEV;
+
+ return 0;
+}
+
static int xlp9xx_i2c_probe(struct platform_device *pdev)
{
struct xlp9xx_i2c_dev *priv;
dev_err(&pdev->dev, "invalid irq!\n");
return priv->irq;
}
+ /* SMBAlert irq */
+ priv->alert_data.irq = platform_get_irq(pdev, 1);
+ if (priv->alert_data.irq <= 0)
+ priv->alert_data.irq = 0;
xlp9xx_i2c_get_frequency(pdev, priv);
xlp9xx_i2c_init(priv);
if (err)
return err;
+ err = xlp9xx_i2c_smbus_setup(priv, pdev);
+ if (err)
+ dev_dbg(&pdev->dev, "No active SMBus alert %d\n", err);
+
platform_set_drvdata(pdev, priv);
dev_dbg(&pdev->dev, "I2C bus:%d added\n", priv->adapter.nr);