37 #define PS2_FLAG_CMD		BIT(1)	/* Waiting for a command to finish */
38 #define PS2_FLAG_CMD1		BIT(2)	/* Waiting for the first byte of command response */
39 #define PS2_FLAG_WAITID		BIT(3)	/* Command executing is GET ID */
121  * ps2_begin_command - mark beginning of execution of a complex command
122  * @ps2dev: a PS/2 device executing the command
124  * Serializes a complex/compound command. Once command is finished
136  * ps2_end_command - mark end of execution of a complex command
137  * @ps2dev: a PS/2 device executing the command
197  * ps2_adjust_timeout() is called after receiving 1st byte of command
198  * response and tries to reduce remaining timeout to speed up command
202 			      unsigned int command, unsigned int timeout)  in ps2_adjust_timeout()  argument
204 	switch (command) {  in ps2_adjust_timeout()
208 		 * reset command, reset is thus done, so we can  in ps2_adjust_timeout()
220 		 * the GET ID command as it were a mouse, with  in ps2_adjust_timeout()
221 		 * a single byte. Fail the command so atkbd will  in ps2_adjust_timeout()
251  * __ps2_command - send a command to PS/2 device
252  * @ps2dev: the PS/2 device that should execute the command
253  * @param: a buffer containing parameters to be sent along with the command,
254  *   or place where the results of the command execution will be deposited,
256  * @command: command word that encodes the command itself, as well as number of
258  *   length of the command response
263 int __ps2_command(struct ps2dev *ps2dev, u8 *param, unsigned int command)  in __ps2_command()  argument
266 	unsigned int send = (command >> 12) & 0xf;  in __ps2_command()
267 	unsigned int receive = (command >> 8) & 0xf;  in __ps2_command()
292 	switch (command) {  in __ps2_command()
295 		 * Some mice do not ACK the "get ID" command, prepare to  in __ps2_command()
313 		/* Indicate that we expect response to the command. */  in __ps2_command()
322 	 * ACKing the reset command, and so it can take a long  in __ps2_command()
325 	timeout = command == PS2_CMD_RESET_BAT ? 1000 : 200;  in __ps2_command()
327 	rc = ps2_do_sendbyte(ps2dev, command & 0xff, timeout, 2);  in __ps2_command()
331 	/* Send command parameters, if any. */  in __ps2_command()
341 	 * The reset command takes a long time to execute.  in __ps2_command()
343 	timeout = msecs_to_jiffies(command == PS2_CMD_RESET_BAT ? 4000 : 500);  in __ps2_command()
350 		timeout = ps2_adjust_timeout(ps2dev, command, timeout);  in __ps2_command()
364 	    (command != PS2_CMD_RESET_BAT || ps2dev->cmdcnt != 1)) {  in __ps2_command()
377 		command & 0xff, send, send_param,  in __ps2_command()
390  * ps2_command - send a command to PS/2 device
391  * @ps2dev: the PS/2 device that should execute the command
392  * @param: a buffer containing parameters to be sent along with the command,
393  *   or place where the results of the command execution will be deposited,
395  * @command: command word that encodes the command itself, as well as number of
397  *   length of the command response
399  * Note: ps2_command() serializes the command execution so that only one
400  * command can be executed at a time for either individual port or the entire
403 int ps2_command(struct ps2dev *ps2dev, u8 *param, unsigned int command)  in ps2_command()  argument
408 	rc = __ps2_command(ps2dev, param, command);  in ps2_command()
416  * ps2_sliced_command - sends an extended PS/2 command to a mouse
417  * @ps2dev: the PS/2 device that should execute the command
418  * @command: command byte
420  * The command is sent using "sliced" syntax understood by advanced devices,
421  * such as Logitech or Synaptics touchpads. The command is encoded as:
423  * is the command.
425 int ps2_sliced_command(struct ps2dev *ps2dev, u8 command)  in ps2_sliced_command()  argument
437 		u8 d = (command >> i) & 3;  in ps2_sliced_command()
444 	dev_dbg(&ps2dev->serio->dev, "%02x - %d\n", command, retval);  in ps2_sliced_command()
475  * ps2_handle_response() stores device's response to a command and notifies
476  * the process waiting for completion of the command. Note that there is a
499  * ps2_handle_ack() processes ACK/NAK of a command from a PS/2 device,
501  * command.
524 	 * Workaround for mice which don't ACK the Get ID command.  in ps2_handle_ack()
538 		 * waiting for an ACK to the initial (first) command byte:  in ps2_handle_ack()
545 		 * for mice not acknowledging the Get ID command only triggers  in ps2_handle_ack()
592  * ps2_interrupt() invokes pre-receive handler, optionally handles command