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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-04-05 02:11:49 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-04-05 02:11:49 +0300 |
| commit | 664b0bae0b87f69bc9deb098f5e0158b9cf18e04 (patch) | |
| tree | d5841492b396ff483723b9339c7c11dc33b67688 /include/linux/serdev.h | |
| parent | 567b9b549cfa1cbc202762ae97b5385c29ade1e3 (diff) | |
| parent | 04bb1719c4de94700056241d4c0fe3c1413f5aff (diff) | |
| download | linux-664b0bae0b87f69bc9deb098f5e0158b9cf18e04.tar.xz | |
Merge branch 'next' into for-linus
Prepare input updates for 4.17 merge window.
Diffstat (limited to 'include/linux/serdev.h')
| -rw-r--r-- | include/linux/serdev.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/include/linux/serdev.h b/include/linux/serdev.h index e69402d4a8ae..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 *); @@ -184,7 +193,7 @@ static inline int serdev_controller_receive_buf(struct serdev_controller *ctrl, struct serdev_device *serdev = ctrl->serdev; if (!serdev || !serdev->ops->receive_buf) - return -EINVAL; + return 0; return serdev->ops->receive_buf(serdev, data, count); } @@ -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 */ |