45 void pi_write_regr(PIA * pi, int cont, int regr, int val)  in pi_write_regr()  argument
47 	pi->proto->write_regr(pi, cont, regr, val);  in pi_write_regr()
52 int pi_read_regr(PIA * pi, int cont, int regr)  in pi_read_regr()  argument
54 	return pi->proto->read_regr(pi, cont, regr);  in pi_read_regr()
59 void pi_write_block(PIA * pi, char *buf, int count)  in pi_write_block()  argument
61 	pi->proto->write_block(pi, buf, count);  in pi_write_block()
66 void pi_read_block(PIA * pi, char *buf, int count)  in pi_read_block()  argument
68 	pi->proto->read_block(pi, buf, count);  in pi_read_block()
75 	PIA *pi = (PIA *) p;  in pi_wake_up()  local
81 	if (pi->claim_cont && !parport_claim(pi->pardev)) {  in pi_wake_up()
82 		cont = pi->claim_cont;  in pi_wake_up()
83 		pi->claim_cont = NULL;  in pi_wake_up()
84 		pi->claimed = 1;  in pi_wake_up()
89 	wake_up(&(pi->parq));  in pi_wake_up()
95 int pi_schedule_claimed(PIA * pi, void (*cont) (void))  in pi_schedule_claimed()  argument
100 	if (pi->pardev && parport_claim(pi->pardev)) {  in pi_schedule_claimed()
101 		pi->claim_cont = cont;  in pi_schedule_claimed()
105 	pi->claimed = 1;  in pi_schedule_claimed()
111 void pi_do_claimed(PIA * pi, void (*cont) (void))  in pi_do_claimed()  argument
113 	if (pi_schedule_claimed(pi, cont))  in pi_do_claimed()
119 static void pi_claim(PIA * pi)  in pi_claim()  argument
121 	if (pi->claimed)  in pi_claim()
123 	pi->claimed = 1;  in pi_claim()
124 	if (pi->pardev)  in pi_claim()
125 		wait_event(pi->parq,  in pi_claim()
126 			   !parport_claim((struct pardevice *) pi->pardev));  in pi_claim()
129 static void pi_unclaim(PIA * pi)  in pi_unclaim()  argument
131 	pi->claimed = 0;  in pi_unclaim()
132 	if (pi->pardev)  in pi_unclaim()
133 		parport_release((struct pardevice *) (pi->pardev));  in pi_unclaim()
136 void pi_connect(PIA * pi)  in pi_connect()  argument
138 	pi_claim(pi);  in pi_connect()
139 	pi->proto->connect(pi);  in pi_connect()
144 void pi_disconnect(PIA * pi)  in pi_disconnect()  argument
146 	pi->proto->disconnect(pi);  in pi_disconnect()
147 	pi_unclaim(pi);  in pi_disconnect()
152 static void pi_unregister_parport(PIA * pi)  in pi_unregister_parport()  argument
154 	if (pi->pardev) {  in pi_unregister_parport()
155 		parport_unregister_device((struct pardevice *) (pi->pardev));  in pi_unregister_parport()
156 		pi->pardev = NULL;  in pi_unregister_parport()
160 void pi_release(PIA * pi)  in pi_release()  argument
162 	pi_unregister_parport(pi);  in pi_release()
163 	if (pi->proto->release_proto)  in pi_release()
164 		pi->proto->release_proto(pi);  in pi_release()
165 	module_put(pi->proto->owner);  in pi_release()
170 static int default_test_proto(PIA * pi, char *scratch, int verbose)  in default_test_proto()  argument
175 	pi->proto->connect(pi);  in default_test_proto()
178 		pi_write_regr(pi, 0, 6, 0xa0 + j * 0x10);  in default_test_proto()
180 			pi_write_regr(pi, 0, 2, k ^ 0xaa);  in default_test_proto()
181 			pi_write_regr(pi, 0, 3, k ^ 0x55);  in default_test_proto()
182 			if (pi_read_regr(pi, 0, 2) != (k ^ 0xaa))  in default_test_proto()
186 	pi->proto->disconnect(pi);  in default_test_proto()
190 		       pi->device, pi->proto->name, pi->port,  in default_test_proto()
191 		       pi->mode, e[0], e[1]);  in default_test_proto()
196 static int pi_test_proto(PIA * pi, char *scratch, int verbose)  in pi_test_proto()  argument
200 	pi_claim(pi);  in pi_test_proto()
201 	if (pi->proto->test_proto)  in pi_test_proto()
202 		res = pi->proto->test_proto(pi, scratch, verbose);  in pi_test_proto()
204 		res = default_test_proto(pi, scratch, verbose);  in pi_test_proto()
205 	pi_unclaim(pi);  in pi_test_proto()
248 static int pi_register_parport(PIA *pi, int verbose, int unit)  in pi_register_parport()  argument
253 	port = parport_find_base(pi->port);  in pi_register_parport()
258 	par_cb.private = (void *)pi;  in pi_register_parport()
259 	pi->pardev = parport_register_dev_model(port, pi->device, &par_cb,  in pi_register_parport()
262 	if (!pi->pardev)  in pi_register_parport()
265 	init_waitqueue_head(&pi->parq);  in pi_register_parport()
268 		printk("%s: 0x%x is %s\n", pi->device, pi->port, port->name);  in pi_register_parport()
270 	pi->parname = (char *) port->name;  in pi_register_parport()
275 static int pi_probe_mode(PIA * pi, int max, char *scratch, int verbose)  in pi_probe_mode()  argument
279 	if (pi->mode != -1) {  in pi_probe_mode()
280 		if (pi->mode >= max)  in pi_probe_mode()
283 		if (pi->mode >= pi->proto->epp_first)  in pi_probe_mode()
285 		if ((range == 8) && (pi->port % 8))  in pi_probe_mode()
287 		pi->reserved = range;  in pi_probe_mode()
288 		return (!pi_test_proto(pi, scratch, verbose));  in pi_probe_mode()
291 	for (pi->mode = 0; pi->mode < max; pi->mode++) {  in pi_probe_mode()
293 		if (pi->mode >= pi->proto->epp_first)  in pi_probe_mode()
295 		if ((range == 8) && (pi->port % 8))  in pi_probe_mode()
297 		pi->reserved = range;  in pi_probe_mode()
298 		if (!pi_test_proto(pi, scratch, verbose))  in pi_probe_mode()
299 			best = pi->mode;  in pi_probe_mode()
301 	pi->mode = best;  in pi_probe_mode()
305 static int pi_probe_unit(PIA * pi, int unit, char *scratch, int verbose)  in pi_probe_unit()  argument
314 		e = pi->proto->max_units;  in pi_probe_unit()
317 	if (!pi_register_parport(pi, verbose, s))  in pi_probe_unit()
320 	if (pi->proto->test_port) {  in pi_probe_unit()
321 		pi_claim(pi);  in pi_probe_unit()
322 		max = pi->proto->test_port(pi);  in pi_probe_unit()
323 		pi_unclaim(pi);  in pi_probe_unit()
325 		max = pi->proto->max_mode;  in pi_probe_unit()
327 	if (pi->proto->probe_unit) {  in pi_probe_unit()
328 		pi_claim(pi);  in pi_probe_unit()
329 		for (pi->unit = s; pi->unit < e; pi->unit++)  in pi_probe_unit()
330 			if (pi->proto->probe_unit(pi)) {  in pi_probe_unit()
331 				pi_unclaim(pi);  in pi_probe_unit()
332 				if (pi_probe_mode(pi, max, scratch, verbose))  in pi_probe_unit()
334 				pi_unregister_parport(pi);  in pi_probe_unit()
337 		pi_unclaim(pi);  in pi_probe_unit()
338 		pi_unregister_parport(pi);  in pi_probe_unit()
342 	if (!pi_probe_mode(pi, max, scratch, verbose)) {  in pi_probe_unit()
343 		pi_unregister_parport(pi);  in pi_probe_unit()
350 int pi_init(PIA * pi, int autoprobe, int port, int mode,  in pi_init()  argument
380 		pi->proto = proto;  in pi_init()
381 		pi->private = 0;  in pi_init()
382 		if (proto->init_proto && proto->init_proto(pi) < 0) {  in pi_init()
383 			pi->proto = NULL;  in pi_init()
388 			pi->delay = pi->proto->default_delay;  in pi_init()
390 			pi->delay = delay;  in pi_init()
391 		pi->devtype = devtype;  in pi_init()
392 		pi->device = device;  in pi_init()
394 		pi->parname = NULL;  in pi_init()
395 		pi->pardev = NULL;  in pi_init()
396 		init_waitqueue_head(&pi->parq);  in pi_init()
397 		pi->claimed = 0;  in pi_init()
398 		pi->claim_cont = NULL;  in pi_init()
400 		pi->mode = mode;  in pi_init()
402 			pi->port = port;  in pi_init()
403 			if (pi_probe_unit(pi, unit, scratch, verbose))  in pi_init()
405 			pi->port = 0;  in pi_init()
408 			while ((pi->port = lpts[k++]))  in pi_init()
410 				    (pi, unit, scratch, verbose))  in pi_init()
412 			if (pi->port)  in pi_init()
415 		if (pi->proto->release_proto)  in pi_init()
416 			pi->proto->release_proto(pi);  in pi_init()
420 	if (!pi->port) {  in pi_init()
428 	if (pi->parname)  in pi_init()
429 		printk("%s: Sharing %s at 0x%x\n", pi->device,  in pi_init()
430 		       pi->parname, pi->port);  in pi_init()
432 	pi->proto->log_adapter(pi, scratch, verbose);  in pi_init()