1 // SPDX-License-Identifier: GPL-2.0+
17 static int rsa8250_request_resource(struct uart_8250_port *up)  in rsa8250_request_resource()  argument
19 	unsigned long start = UART_RSA_BASE << up->port.regshift;  in rsa8250_request_resource()  local
20 	unsigned int size = 8 << up->port.regshift;  in rsa8250_request_resource()
21 	struct uart_port *port = &up->port;  in rsa8250_request_resource()
22 	int ret = -EINVAL;  in rsa8250_request_resource()
24 	switch (port->iotype) {  in rsa8250_request_resource()
27 		start += port->iobase;  in rsa8250_request_resource()
28 		if (request_region(start, size, "serial-rsa"))  in rsa8250_request_resource()
31 			ret = -EBUSY;  in rsa8250_request_resource()
38 static void rsa8250_release_resource(struct uart_8250_port *up)  in rsa8250_release_resource()  argument
40 	unsigned long offset = UART_RSA_BASE << up->port.regshift;  in rsa8250_release_resource()
41 	unsigned int size = 8 << up->port.regshift;  in rsa8250_release_resource()
42 	struct uart_port *port = &up->port;  in rsa8250_release_resource()
44 	switch (port->iotype) {  in rsa8250_release_resource()
47 		release_region(port->iobase + offset, size);  in rsa8250_release_resource()
54 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_config_port()  local
57 	up->probe &= ~UART_PROBE_RSA;  in univ8250_config_port()
58 	if (port->type == PORT_RSA) {  in univ8250_config_port()
59 		if (rsa8250_request_resource(up) == 0)  in univ8250_config_port()
60 			up->probe |= UART_PROBE_RSA;  in univ8250_config_port()
63 			if (probe_rsa[i] == up->port.iobase) {  in univ8250_config_port()
64 				if (rsa8250_request_resource(up) == 0)  in univ8250_config_port()
65 					up->probe |= UART_PROBE_RSA;  in univ8250_config_port()
71 	univ8250_port_base_ops->config_port(port, flags);  in univ8250_config_port()
73 	if (port->type != PORT_RSA && up->probe & UART_PROBE_RSA)  in univ8250_config_port()
74 		rsa8250_release_resource(up);  in univ8250_config_port()
79 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_request_port()  local
82 	ret = univ8250_port_base_ops->request_port(port);  in univ8250_request_port()
83 	if (ret == 0 && port->type == PORT_RSA) {  in univ8250_request_port()
84 		ret = rsa8250_request_resource(up);  in univ8250_request_port()
86 			univ8250_port_base_ops->release_port(port);  in univ8250_request_port()
94 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_release_port()  local
96 	if (port->type == PORT_RSA)  in univ8250_release_port()
97 		rsa8250_release_resource(up);  in univ8250_release_port()
98 	univ8250_port_base_ops->release_port(port);  in univ8250_release_port()
103 	ops->config_port  = univ8250_config_port;  in univ8250_rsa_support()
104 	ops->request_port = univ8250_request_port;  in univ8250_rsa_support()
105 	ops->release_port = univ8250_release_port;  in univ8250_rsa_support()
130 		0444, -1, 0);  in rsa8250_options()