73 struct gc {  struct
87 static struct gc *gc_base[3];  argument
133 static void gc_n64_send_command(struct gc *gc, unsigned long cmd,  in gc_n64_send_command()  argument
136 	struct parport *port = gc->pd->port;  in gc_n64_send_command()
147 static void gc_n64_send_stop_bit(struct gc *gc, unsigned char target)  in gc_n64_send_stop_bit()  argument
149 	struct parport *port = gc->pd->port;  in gc_n64_send_stop_bit()
165 static void gc_n64_read_packet(struct gc *gc, unsigned char *data)  in gc_n64_read_packet()  argument
175 	gc_n64_send_command(gc, GC_N64_REQUEST_DATA, GC_N64_OUT);  in gc_n64_read_packet()
176 	gc_n64_send_stop_bit(gc, GC_N64_OUT);  in gc_n64_read_packet()
191 		parport_write_data(gc->pd->port, GC_N64_POWER_R);  in gc_n64_read_packet()
193 		data[i] = parport_read_status(gc->pd->port);  in gc_n64_read_packet()
194 		parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);  in gc_n64_read_packet()
205 static void gc_n64_process_packet(struct gc *gc)  in gc_n64_process_packet()  argument
212 	gc_n64_read_packet(gc, data);  in gc_n64_process_packet()
216 		if (gc->pads[i].type != GC_N64)  in gc_n64_process_packet()
219 		dev = gc->pads[i].dev;  in gc_n64_process_packet()
255 	struct gc *gc = input_get_drvdata(dev);  in gc_n64_play_effect()  local
268 		gc_n64_send_command(gc, GC_N64_CMD_03, target);  in gc_n64_play_effect()
269 		gc_n64_send_command(gc, GC_N64_CMD_80, target);  in gc_n64_play_effect()
270 		gc_n64_send_command(gc, GC_N64_CMD_01, target);  in gc_n64_play_effect()
272 			gc_n64_send_command(gc, GC_N64_CMD_80, target);  in gc_n64_play_effect()
273 		gc_n64_send_stop_bit(gc, target);  in gc_n64_play_effect()
278 		gc_n64_send_command(gc, GC_N64_CMD_03, target);  in gc_n64_play_effect()
279 		gc_n64_send_command(gc, GC_N64_CMD_c0, target);  in gc_n64_play_effect()
280 		gc_n64_send_command(gc, GC_N64_CMD_1b, target);  in gc_n64_play_effect()
282 			gc_n64_send_command(gc, cmd, target);  in gc_n64_play_effect()
283 		gc_n64_send_stop_bit(gc, target);  in gc_n64_play_effect()
341 static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)  in gc_nes_read_packet()  argument
345 	parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);  in gc_nes_read_packet()
347 	parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);  in gc_nes_read_packet()
351 		parport_write_data(gc->pd->port, GC_NES_POWER);  in gc_nes_read_packet()
352 		data[i] = parport_read_status(gc->pd->port) ^ 0x7f;  in gc_nes_read_packet()
354 		parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);  in gc_nes_read_packet()
358 static void gc_nes_process_packet(struct gc *gc)  in gc_nes_process_packet()  argument
366 	len = gc->pad_count[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH :  in gc_nes_process_packet()
367 			(gc->pad_count[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH);  in gc_nes_process_packet()
369 	gc_nes_read_packet(gc, len, data);  in gc_nes_process_packet()
373 		pad = &gc->pads[i];  in gc_nes_process_packet()
460 static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)  in gc_multi_read_packet()  argument
465 		parport_write_data(gc->pd->port, ~(1 << i));  in gc_multi_read_packet()
466 		data[i] = parport_read_status(gc->pd->port) ^ 0x7f;  in gc_multi_read_packet()
470 static void gc_multi_process_packet(struct gc *gc)  in gc_multi_process_packet()  argument
473 	int data_len = gc->pad_count[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH;  in gc_multi_process_packet()
478 	gc_multi_read_packet(gc, data_len, data);  in gc_multi_process_packet()
481 		pad = &gc->pads[i];  in gc_multi_process_packet()
550 static void gc_psx_command(struct gc *gc, int b, unsigned char *data)  in gc_psx_command()  argument
552 	struct parport *port = gc->pd->port;  in gc_psx_command()
565 			struct gc_pad *pad = &gc->pads[j];  in gc_psx_command()
571 		parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);  in gc_psx_command()
581 static void gc_psx_read_packet(struct gc *gc,  in gc_psx_read_packet()  argument
590 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  in gc_psx_read_packet()
593 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);  in gc_psx_read_packet()
598 	gc_psx_command(gc, 0x01, data2);	/* Access pad */  in gc_psx_read_packet()
599 	gc_psx_command(gc, 0x42, id);		/* Get device ids */  in gc_psx_read_packet()
600 	gc_psx_command(gc, 0, data2);		/* Dump status */  in gc_psx_read_packet()
604 		struct gc_pad *pad = &gc->pads[i];  in gc_psx_read_packet()
615 		gc_psx_command(gc, 0, data2);  in gc_psx_read_packet()
622 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  in gc_psx_read_packet()
710 static void gc_psx_process_packet(struct gc *gc)  in gc_psx_process_packet()  argument
717 	gc_psx_read_packet(gc, data, id);  in gc_psx_process_packet()
720 		pad = &gc->pads[i];  in gc_psx_process_packet()
732 	struct gc *gc = from_timer(gc, t, timer);  in gc_timer()  local
738 	if (gc->pad_count[GC_N64])  in gc_timer()
739 		gc_n64_process_packet(gc);  in gc_timer()
745 	if (gc->pad_count[GC_NES] ||  in gc_timer()
746 	    gc->pad_count[GC_SNES] ||  in gc_timer()
747 	    gc->pad_count[GC_SNESMOUSE]) {  in gc_timer()
748 		gc_nes_process_packet(gc);  in gc_timer()
755 	if (gc->pad_count[GC_MULTI] || gc->pad_count[GC_MULTI2])  in gc_timer()
756 		gc_multi_process_packet(gc);  in gc_timer()
762 	if (gc->pad_count[GC_PSX] || gc->pad_count[GC_DDR])  in gc_timer()
763 		gc_psx_process_packet(gc);  in gc_timer()
765 	mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);  in gc_timer()
770 	struct gc *gc = input_get_drvdata(dev);  in gc_open()  local
773 	err = mutex_lock_interruptible(&gc->mutex);  in gc_open()
777 	if (!gc->used++) {  in gc_open()
778 		parport_claim(gc->pd);  in gc_open()
779 		parport_write_control(gc->pd->port, 0x04);  in gc_open()
780 		mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);  in gc_open()
783 	mutex_unlock(&gc->mutex);  in gc_open()
789 	struct gc *gc = input_get_drvdata(dev);  in gc_close()  local
791 	mutex_lock(&gc->mutex);  in gc_close()
792 	if (!--gc->used) {  in gc_close()
793 		del_timer_sync(&gc->timer);  in gc_close()
794 		parport_write_control(gc->pd->port, 0x00);  in gc_close()
795 		parport_release(gc->pd);  in gc_close()
797 	mutex_unlock(&gc->mutex);  in gc_close()
800 static int gc_setup_pad(struct gc *gc, int idx, int pad_type)  in gc_setup_pad()  argument
802 	struct gc_pad *pad = &gc->pads[idx];  in gc_setup_pad()
821 		 "%s/input%d", gc->pd->port->name, idx);  in gc_setup_pad()
830 	input_set_drvdata(input_dev, gc);  in gc_setup_pad()
843 	gc->pad_count[pad_type]++;  in gc_setup_pad()
924 	struct gc *gc;  in gc_attach()  local
956 	gc = kzalloc(sizeof(struct gc), GFP_KERNEL);  in gc_attach()
957 	if (!gc) {  in gc_attach()
962 	mutex_init(&gc->mutex);  in gc_attach()
963 	gc->pd = pd;  in gc_attach()
964 	gc->parportno = pp->number;  in gc_attach()
965 	timer_setup(&gc->timer, gc_timer, 0);  in gc_attach()
971 		if (gc_setup_pad(gc, i, pads[i]))  in gc_attach()
982 	gc_base[port_idx] = gc;  in gc_attach()
987 		if (gc->pads[i].dev)  in gc_attach()
988 			input_unregister_device(gc->pads[i].dev);  in gc_attach()
990 	kfree(gc);  in gc_attach()
998 	struct gc *gc;  in gc_detach()  local
1008 	gc = gc_base[i];  in gc_detach()
1012 		if (gc->pads[i].dev)  in gc_detach()
1013 			input_unregister_device(gc->pads[i].dev);  in gc_detach()
1014 	parport_unregister_device(gc->pd);  in gc_detach()
1015 	kfree(gc);  in gc_detach()