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Diffstat (limited to 'include/serdev.h')
| -rw-r--r-- | include/serdev.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/serdev.h b/include/serdev.h new file mode 100644 index 0000000000..f5d34f5276 --- /dev/null +++ b/include/serdev.h @@ -0,0 +1,44 @@ +#ifndef _SERDEV_H_ +#define _SERDEV_H_ + +#include <driver.h> +#include <poller.h> +#include <kfifo.h> + +/** + * struct serdev_device - Basic representation of an serdev device + * + * @dev: Corresponding device + * @fifo: Circular buffer used for console draining + * @buf: Buffer used to pass Rx data to consumers + * @poller Async poller used to poll this serdev + * @polling_interval: Async poller periodicity + * @polling_window: Duration of a single busy loop poll + * @receive_buf: Function called with data received from device; + * returns number of bytes accepted; + */ +struct serdev_device { + struct device_d *dev; + struct kfifo *fifo; + unsigned char *buf; + struct poller_async poller; + uint64_t polling_interval; + uint64_t polling_window; + + int (*receive_buf)(struct serdev_device *, const unsigned char *, + size_t); +}; + +int serdev_device_open(struct serdev_device *); +unsigned int serdev_device_set_baudrate(struct serdev_device *, unsigned int); +int serdev_device_write(struct serdev_device *, const unsigned char *, + size_t, unsigned long); + +/* + * The following two functions are not a part of original Linux API + */ +int serdev_device_reader_open(struct serdev_device *, size_t); +int serdev_device_read(struct serdev_device *, unsigned char *, + size_t, unsigned long); + +#endif |