drivers/auxdisplay/line-display.c

28  * Scroll the current message along the display by one character, rearming the
37 	/* update the current message string */  in linedisp_scroll()
41 			linedisp->buf[i] = linedisp->message[ch];  in linedisp_scroll()
60  * linedisp_display() - set the message to be displayed
62  * @msg: the message to display
65  * Display a new message @msg on the display. @msg can be longer than the
88 		kfree(linedisp->message);  in linedisp_display()
89 		linedisp->message = NULL;  in linedisp_display()
100 	kfree(linedisp->message);  in linedisp_display()
102 	linedisp->message = new_msg;  in linedisp_display()
113  * message_show() - read message via sysfs
115  * @attr: the display message attribute
116  * @buf: the buffer to read the message into
118  * Read the current message being displayed or scrolled across the display into
128 	return sysfs_emit(buf, "%s\n", linedisp->message);  in message_show()
132  * message_store() - write a new message via sysfs
134  * @attr: the display message attribute
135  * @buf: the buffer containing the new message
136  * @count: the size of the message in @buf
138  * Write a new message to display or scroll across the display from sysfs.
140  * Return: the size of the message on success, else -ERRNO
152 static DEVICE_ATTR_RW(message);
173 	if (linedisp->message && linedisp->message_len > linedisp->num_chars) {  in scroll_step_ms_store()
224 	/* initialise a timer for scrolling the message */  in linedisp_register()
231 	/* display a default message */  in linedisp_register()
256 	kfree(linedisp->message);  in linedisp_unregister()