return -EIO;
}
+void max9271_wake_up(struct max9271_device *dev)
+{
+ /*
+ * Use the chip default address as this function has to be called
+ * before any other one.
+ */
+ dev->client->addr = MAX9271_DEFAULT_ADDR;
+ i2c_smbus_read_byte(dev->client);
+ usleep_range(5000, 8000);
+}
+EXPORT_SYMBOL_GPL(max9271_wake_up);
+
int max9271_set_serial_link(struct max9271_device *dev, bool enable)
{
int ret;
struct i2c_client *client;
};
+/**
+ * max9271_wake_up() - Wake up the serializer by issuing an i2c transaction
+ * @dev: The max9271 device
+ *
+ * This function shall be called before any other interaction with the
+ * serializer.
+ */
+void max9271_wake_up(struct max9271_device *dev);
+
/**
* max9271_set_serial_link() - Enable/disable serial link
* @dev: The max9271 device
unsigned int retry = 3;
int ret;
- /* Verify communication with the MAX9271: ping to wakeup. */
- dev->serializer->client->addr = MAX9271_DEFAULT_ADDR;
- i2c_smbus_read_byte(dev->serializer->client);
+ max9271_wake_up(dev->serializer);
/* Serial link disabled during config as it needs a valid pixel clock. */
ret = max9271_set_serial_link(dev->serializer, false);
{
int ret;
- /* Verify communication with the MAX9271: ping to wakeup. */
- dev->serializer.client->addr = MAX9271_DEFAULT_ADDR;
- i2c_smbus_read_byte(dev->serializer.client);
- usleep_range(3000, 5000);
+ max9271_wake_up(&dev->serializer);
/* Enable reverse channel and disable the serial link. */
ret = max9271_set_serial_link(&dev->serializer, false);