115 static inline int serial_in(struct uart_8250_port *up, int offset)  in serial_in()  argument
117 	return up->port.serial_in(&up->port, offset);  in serial_in()
120 static inline void serial_out(struct uart_8250_port *up, int offset, int value)  in serial_out()  argument
122 	up->port.serial_out(&up->port, offset, value);  in serial_out()
128 static void serial_icr_write(struct uart_8250_port *up, int offset, int value)  in serial_icr_write()  argument
130 	serial_out(up, UART_SCR, offset);  in serial_icr_write()
131 	serial_out(up, UART_ICR, value);  in serial_icr_write()
134 static unsigned int __maybe_unused serial_icr_read(struct uart_8250_port *up,  in serial_icr_read()  argument
139 	serial_icr_write(up, UART_ACR, up->acr | UART_ACR_ICRRD);  in serial_icr_read()
140 	serial_out(up, UART_SCR, offset);  in serial_icr_read()
141 	value = serial_in(up, UART_ICR);  in serial_icr_read()
142 	serial_icr_write(up, UART_ACR, up->acr);  in serial_icr_read()
149 static inline int serial_dl_read(struct uart_8250_port *up)  in serial_dl_read()  argument
151 	return up->dl_read(up);  in serial_dl_read()
154 static inline void serial_dl_write(struct uart_8250_port *up, int value)  in serial_dl_write()  argument
156 	up->dl_write(up, value);  in serial_dl_write()
159 static inline bool serial8250_set_THRI(struct uart_8250_port *up)  in serial8250_set_THRI()  argument
161 	if (up->ier & UART_IER_THRI)  in serial8250_set_THRI()
163 	up->ier |= UART_IER_THRI;  in serial8250_set_THRI()
165 	up->ier |= UART_IER_PTIME;  in serial8250_set_THRI()
167 	serial_out(up, UART_IER, up->ier);  in serial8250_set_THRI()
171 static inline bool serial8250_clear_THRI(struct uart_8250_port *up)  in serial8250_clear_THRI()  argument
173 	if (!(up->ier & UART_IER_THRI))  in serial8250_clear_THRI()
175 	up->ier &= ~UART_IER_THRI;  in serial8250_clear_THRI()
177 	up->ier &= ~UART_IER_PTIME;  in serial8250_clear_THRI()
179 	serial_out(up, UART_IER, up->ier);  in serial8250_clear_THRI()
250 static inline void serial8250_out_MCR(struct uart_8250_port *up, int value)  in serial8250_out_MCR()  argument
252 	serial_out(up, UART_MCR, value);  in serial8250_out_MCR()
254 	if (up->gpios)  in serial8250_out_MCR()
255 		mctrl_gpio_set(up->gpios, serial8250_MCR_to_TIOCM(value));  in serial8250_out_MCR()
258 static inline int serial8250_in_MCR(struct uart_8250_port *up)  in serial8250_in_MCR()  argument
262 	mctrl = serial_in(up, UART_MCR);  in serial8250_in_MCR()
264 	if (up->gpios) {  in serial8250_in_MCR()
267 		mctrl_gpio = mctrl_gpio_get_outputs(up->gpios, &mctrl_gpio);  in serial8250_in_MCR()
278  * is cleared, the machine locks up with endless interrupts.
368 static inline int ns16550a_goto_highspeed(struct uart_8250_port *up)  in ns16550a_goto_highspeed()  argument
372 	status = serial_in(up, 0x04); /* EXCR2 */  in ns16550a_goto_highspeed()
380 		serial_out(up, 0x04, status);  in ns16550a_goto_highspeed()