u-boot/include/serial.h

122 	SERIAL_CHIP_UNKNOWN = -1,
132  * struct serial_device_info - structure to hold serial device info
155  * struct struct dm_serial_ops - Driver model serial operations
162 	 * setbrg() - Set up the baud rate generator
167 	 * available rate. or return -EINVAL if this is not possible.
171 	 * @return 0 if OK, -ve on error
175 	 * getc() - Read a character and return it
177 	 * If no character is available, this should return -EAGAIN without
181 	 * @return character (0..255), -ve on error
185 	 * putc() - Write a character
189 	 * @return 0 if OK, -ve on error
193 	 * pending() - Check if input/output characters are waiting
203 	 * @input: true to check input characters, false for output
204 	 * @return number of waiting characters, 0 for none, -ve on error
206 	int (*pending)(struct udevice *dev, bool input);
208 	 * clear() - Clear the serial FIFOs/holding registers
212 	 * This quickly clears any input/output characters from the UART.
214 	 * is acceptable to return -EAGAIN (try again) or -EINVAL (not
218 	 * @return 0 if OK, -ve on error
223 	 * loop() - Control serial device loopback mode
232 	 * getconfig() - Get the uart configuration
239 	 * @return 0 if OK, -ve on error
243 	 * setconfig() - Set up the uart configuration
250 	 * @return 0 if OK, -ve on error
254 	 * getinfo() - Get serial device information
258 	 * @return 0 if OK, -ve on error
264  * struct serial_dev_priv - information about a device used by the uclass
268  * @buf:	Pointer to the RX buffer
269  * @rd_ptr:	Read pointer in the RX buffer
270  * @wr_ptr:	Write pointer in the RX buffer
281 #define serial_get_ops(dev)	((struct dm_serial_ops *)(dev)->driver->ops)
284  * serial_getconfig() - Get the uart configuration
291  * @return 0 if OK, -ve on error
296  * serial_setconfig() - Set up the uart configuration
303  * @return 0 if OK, -ve on error
308  * serial_getinfo() - Get serial device information
312  * @return 0 if OK, -ve on error