1 // SPDX-License-Identifier: GPL-2.0+
17 static int rsa8250_request_resource(struct uart_8250_port *up)  in rsa8250_request_resource()  argument
19 	struct uart_port *port = &up->port;  in rsa8250_request_resource()
20 	unsigned long start = UART_RSA_BASE << port->regshift;  in rsa8250_request_resource()  local
21 	unsigned int size = 8 << port->regshift;  in rsa8250_request_resource()
23 	switch (port->iotype) {  in rsa8250_request_resource()
26 		start += port->iobase;  in rsa8250_request_resource()
27 		if (!request_region(start, size, "serial-rsa"))  in rsa8250_request_resource()
28 			return -EBUSY;  in rsa8250_request_resource()
31 		return -EINVAL;  in rsa8250_request_resource()
35 static void rsa8250_release_resource(struct uart_8250_port *up)  in rsa8250_release_resource()  argument
37 	struct uart_port *port = &up->port;  in rsa8250_release_resource()
38 	unsigned long offset = UART_RSA_BASE << port->regshift;  in rsa8250_release_resource()
39 	unsigned int size = 8 << port->regshift;  in rsa8250_release_resource()
41 	switch (port->iotype) {  in rsa8250_release_resource()
44 		release_region(port->iobase + offset, size);  in rsa8250_release_resource()
51 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_config_port()  local
54 	up->probe &= ~UART_PROBE_RSA;  in univ8250_config_port()
55 	if (port->type == PORT_RSA) {  in univ8250_config_port()
56 		if (rsa8250_request_resource(up) == 0)  in univ8250_config_port()
57 			up->probe |= UART_PROBE_RSA;  in univ8250_config_port()
60 			if (probe_rsa[i] == up->port.iobase) {  in univ8250_config_port()
61 				if (rsa8250_request_resource(up) == 0)  in univ8250_config_port()
62 					up->probe |= UART_PROBE_RSA;  in univ8250_config_port()
68 	univ8250_port_base_ops->config_port(port, flags);  in univ8250_config_port()
70 	if (port->type != PORT_RSA && up->probe & UART_PROBE_RSA)  in univ8250_config_port()
71 		rsa8250_release_resource(up);  in univ8250_config_port()
76 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_request_port()  local
79 	ret = univ8250_port_base_ops->request_port(port);  in univ8250_request_port()
80 	if (ret == 0 && port->type == PORT_RSA) {  in univ8250_request_port()
81 		ret = rsa8250_request_resource(up);  in univ8250_request_port()
83 			univ8250_port_base_ops->release_port(port);  in univ8250_request_port()
91 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_release_port()  local
93 	if (port->type == PORT_RSA)  in univ8250_release_port()
94 		rsa8250_release_resource(up);  in univ8250_release_port()
95 	univ8250_port_base_ops->release_port(port);  in univ8250_release_port()
100 	ops->config_port  = univ8250_config_port;  in univ8250_rsa_support()
101 	ops->request_port = univ8250_request_port;  in univ8250_rsa_support()
102 	ops->release_port = univ8250_release_port;  in univ8250_rsa_support()
127 		0444, -1, 0);  in rsa8250_options()