1 files changed, 15 insertions, 2 deletions

diff --git a/include/linux/serdev.h b/include/linux/serdev.h
index d609e6dc5bad..f153b2c7f0cd 100644
--- a/include/linux/serdev.h
+++ b/include/linux/serdev.h
@@ -27,8 +27,10 @@ struct serdev_device;
 
 /**
  * struct serdev_device_ops - Callback operations for a serdev device
- * @receive_buf:        Function called with data received from device.
- * @write_wakeup:       Function called when ready to transmit more data.
+ * @receive_buf:        Function called with data received from device;
+ *                      returns number of bytes accepted; may sleep.
+ * @write_wakeup:       Function called when ready to transmit more data; must
+ *                      not sleep.
  */
 struct serdev_device_ops {
         int (*receive_buf)(struct serdev_device *, const unsigned char *, size_t);
@@ -76,6 +78,12 @@ static inline struct serdev_device_driver *to_serdev_device_driver(struct device
         return container_of(d, struct serdev_device_driver, driver);
 }
 
+enum serdev_parity {
+        SERDEV_PARITY_NONE,
+        SERDEV_PARITY_EVEN,
+        SERDEV_PARITY_ODD,
+};
+
 /*
  * serdev controller structures
  */
@@ -86,6 +94,7 @@ struct serdev_controller_ops {
         int (*open)(struct serdev_controller *);
         void (*close)(struct serdev_controller *);
         void (*set_flow_control)(struct serdev_controller *, bool);
+        int (*set_parity)(struct serdev_controller *, enum serdev_parity);
         unsigned int (*set_baudrate)(struct serdev_controller *, unsigned int);
         void (*wait_until_sent)(struct serdev_controller *, long);
         int (*get_tiocm)(struct serdev_controller *);
@@ -193,6 +202,7 @@ static inline int serdev_controller_receive_buf(struct serdev_controller *ctrl,
 
 int serdev_device_open(struct serdev_device *);
 void serdev_device_close(struct serdev_device *);
+int devm_serdev_device_open(struct device *, struct serdev_device *);
 unsigned int serdev_device_set_baudrate(struct serdev_device *, unsigned int);
 void serdev_device_set_flow_control(struct serdev_device *, bool);
 int serdev_device_write_buf(struct serdev_device *, const unsigned char *, size_t);
@@ -298,6 +308,9 @@ static inline int serdev_device_set_rts(struct serdev_device *serdev, bool enabl
                 return serdev_device_set_tiocm(serdev, 0, TIOCM_RTS);
 }
 
+int serdev_device_set_parity(struct serdev_device *serdev,
+                             enum serdev_parity parity);
+
 /*
  * serdev hooks into TTY core
  */