89 struct gc {  struct
102 static struct gc *gc_base[3];  argument
148 static void gc_n64_send_command(struct gc *gc, unsigned long cmd,  in gc_n64_send_command()  argument
151 	struct parport *port = gc->pd->port;  in gc_n64_send_command()
162 static void gc_n64_send_stop_bit(struct gc *gc, unsigned char target)  in gc_n64_send_stop_bit()  argument
164 	struct parport *port = gc->pd->port;  in gc_n64_send_stop_bit()
180 static void gc_n64_read_packet(struct gc *gc, unsigned char *data)  in gc_n64_read_packet()  argument
190 	gc_n64_send_command(gc, GC_N64_REQUEST_DATA, GC_N64_OUT);  in gc_n64_read_packet()
191 	gc_n64_send_stop_bit(gc, GC_N64_OUT);  in gc_n64_read_packet()
206 		parport_write_data(gc->pd->port, GC_N64_POWER_R);  in gc_n64_read_packet()
208 		data[i] = parport_read_status(gc->pd->port);  in gc_n64_read_packet()
209 		parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);  in gc_n64_read_packet()
220 static void gc_n64_process_packet(struct gc *gc)  in gc_n64_process_packet()  argument
227 	gc_n64_read_packet(gc, data);  in gc_n64_process_packet()
231 		if (gc->pads[i].type != GC_N64)  in gc_n64_process_packet()
234 		dev = gc->pads[i].dev;  in gc_n64_process_packet()
270 	struct gc *gc = input_get_drvdata(dev);  in gc_n64_play_effect()  local
283 		gc_n64_send_command(gc, GC_N64_CMD_03, target);  in gc_n64_play_effect()
284 		gc_n64_send_command(gc, GC_N64_CMD_80, target);  in gc_n64_play_effect()
285 		gc_n64_send_command(gc, GC_N64_CMD_01, target);  in gc_n64_play_effect()
287 			gc_n64_send_command(gc, GC_N64_CMD_80, target);  in gc_n64_play_effect()
288 		gc_n64_send_stop_bit(gc, target);  in gc_n64_play_effect()
293 		gc_n64_send_command(gc, GC_N64_CMD_03, target);  in gc_n64_play_effect()
294 		gc_n64_send_command(gc, GC_N64_CMD_c0, target);  in gc_n64_play_effect()
295 		gc_n64_send_command(gc, GC_N64_CMD_1b, target);  in gc_n64_play_effect()
297 			gc_n64_send_command(gc, cmd, target);  in gc_n64_play_effect()
298 		gc_n64_send_stop_bit(gc, target);  in gc_n64_play_effect()
356 static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)  in gc_nes_read_packet()  argument
360 	parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);  in gc_nes_read_packet()
362 	parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);  in gc_nes_read_packet()
366 		parport_write_data(gc->pd->port, GC_NES_POWER);  in gc_nes_read_packet()
367 		data[i] = parport_read_status(gc->pd->port) ^ 0x7f;  in gc_nes_read_packet()
369 		parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);  in gc_nes_read_packet()
373 static void gc_nes_process_packet(struct gc *gc)  in gc_nes_process_packet()  argument
381 	len = gc->pad_count[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH :  in gc_nes_process_packet()
382 			(gc->pad_count[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH);  in gc_nes_process_packet()
384 	gc_nes_read_packet(gc, len, data);  in gc_nes_process_packet()
388 		pad = &gc->pads[i];  in gc_nes_process_packet()
475 static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)  in gc_multi_read_packet()  argument
480 		parport_write_data(gc->pd->port, ~(1 << i));  in gc_multi_read_packet()
481 		data[i] = parport_read_status(gc->pd->port) ^ 0x7f;  in gc_multi_read_packet()
485 static void gc_multi_process_packet(struct gc *gc)  in gc_multi_process_packet()  argument
488 	int data_len = gc->pad_count[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH;  in gc_multi_process_packet()
493 	gc_multi_read_packet(gc, data_len, data);  in gc_multi_process_packet()
496 		pad = &gc->pads[i];  in gc_multi_process_packet()
565 static void gc_psx_command(struct gc *gc, int b, unsigned char *data)  in gc_psx_command()  argument
567 	struct parport *port = gc->pd->port;  in gc_psx_command()
580 			struct gc_pad *pad = &gc->pads[j];  in gc_psx_command()
586 		parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);  in gc_psx_command()
596 static void gc_psx_read_packet(struct gc *gc,  in gc_psx_read_packet()  argument
605 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  in gc_psx_read_packet()
608 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);  in gc_psx_read_packet()
613 	gc_psx_command(gc, 0x01, data2);	/* Access pad */  in gc_psx_read_packet()
614 	gc_psx_command(gc, 0x42, id);		/* Get device ids */  in gc_psx_read_packet()
615 	gc_psx_command(gc, 0, data2);		/* Dump status */  in gc_psx_read_packet()
619 		struct gc_pad *pad = &gc->pads[i];  in gc_psx_read_packet()
630 		gc_psx_command(gc, 0, data2);  in gc_psx_read_packet()
637 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  in gc_psx_read_packet()
724 static void gc_psx_process_packet(struct gc *gc)  in gc_psx_process_packet()  argument
731 	gc_psx_read_packet(gc, data, id);  in gc_psx_process_packet()
734 		pad = &gc->pads[i];  in gc_psx_process_packet()
746 	struct gc *gc = (void *) private;  in gc_timer()  local
752 	if (gc->pad_count[GC_N64])  in gc_timer()
753 		gc_n64_process_packet(gc);  in gc_timer()
759 	if (gc->pad_count[GC_NES] ||  in gc_timer()
760 	    gc->pad_count[GC_SNES] ||  in gc_timer()
761 	    gc->pad_count[GC_SNESMOUSE]) {  in gc_timer()
762 		gc_nes_process_packet(gc);  in gc_timer()
769 	if (gc->pad_count[GC_MULTI] || gc->pad_count[GC_MULTI2])  in gc_timer()
770 		gc_multi_process_packet(gc);  in gc_timer()
776 	if (gc->pad_count[GC_PSX] || gc->pad_count[GC_DDR])  in gc_timer()
777 		gc_psx_process_packet(gc);  in gc_timer()
779 	mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);  in gc_timer()
784 	struct gc *gc = input_get_drvdata(dev);  in gc_open()  local
787 	err = mutex_lock_interruptible(&gc->mutex);  in gc_open()
791 	if (!gc->used++) {  in gc_open()
792 		parport_claim(gc->pd);  in gc_open()
793 		parport_write_control(gc->pd->port, 0x04);  in gc_open()
794 		mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);  in gc_open()
797 	mutex_unlock(&gc->mutex);  in gc_open()
803 	struct gc *gc = input_get_drvdata(dev);  in gc_close()  local
805 	mutex_lock(&gc->mutex);  in gc_close()
806 	if (!--gc->used) {  in gc_close()
807 		del_timer_sync(&gc->timer);  in gc_close()
808 		parport_write_control(gc->pd->port, 0x00);  in gc_close()
809 		parport_release(gc->pd);  in gc_close()
811 	mutex_unlock(&gc->mutex);  in gc_close()
814 static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type)  in gc_setup_pad()  argument
816 	struct gc_pad *pad = &gc->pads[idx];  in gc_setup_pad()
835 		 "%s/input%d", gc->pd->port->name, idx);  in gc_setup_pad()
844 	input_set_drvdata(input_dev, gc);  in gc_setup_pad()
857 	gc->pad_count[pad_type]++;  in gc_setup_pad()
929 static struct gc __init *gc_probe(int parport, int *pads, int n_pads)  in gc_probe()
931 	struct gc *gc;  in gc_probe()  local
952 	gc = kzalloc(sizeof(struct gc), GFP_KERNEL);  in gc_probe()
953 	if (!gc) {  in gc_probe()
959 	mutex_init(&gc->mutex);  in gc_probe()
960 	gc->pd = pd;  in gc_probe()
961 	setup_timer(&gc->timer, gc_timer, (long) gc);  in gc_probe()
967 		err = gc_setup_pad(gc, i, pads[i]);  in gc_probe()
981 	return gc;  in gc_probe()
985 		if (gc->pads[i].dev)  in gc_probe()
986 			input_unregister_device(gc->pads[i].dev);  in gc_probe()
988 	kfree(gc);  in gc_probe()
997 static void gc_remove(struct gc *gc)  in gc_remove()  argument
1002 		if (gc->pads[i].dev)  in gc_remove()
1003 			input_unregister_device(gc->pads[i].dev);  in gc_remove()
1004 	parport_unregister_device(gc->pd);  in gc_remove()
1005 	kfree(gc);  in gc_remove()