85 struct gc {  struct
99 static struct gc *gc_base[3];  argument
145 static void gc_n64_send_command(struct gc *gc, unsigned long cmd,  in gc_n64_send_command()  argument
148 	struct parport *port = gc->pd->port;  in gc_n64_send_command()
159 static void gc_n64_send_stop_bit(struct gc *gc, unsigned char target)  in gc_n64_send_stop_bit()  argument
161 	struct parport *port = gc->pd->port;  in gc_n64_send_stop_bit()
177 static void gc_n64_read_packet(struct gc *gc, unsigned char *data)  in gc_n64_read_packet()  argument
187 	gc_n64_send_command(gc, GC_N64_REQUEST_DATA, GC_N64_OUT);  in gc_n64_read_packet()
188 	gc_n64_send_stop_bit(gc, GC_N64_OUT);  in gc_n64_read_packet()
203 		parport_write_data(gc->pd->port, GC_N64_POWER_R);  in gc_n64_read_packet()
205 		data[i] = parport_read_status(gc->pd->port);  in gc_n64_read_packet()
206 		parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);  in gc_n64_read_packet()
217 static void gc_n64_process_packet(struct gc *gc)  in gc_n64_process_packet()  argument
224 	gc_n64_read_packet(gc, data);  in gc_n64_process_packet()
228 		if (gc->pads[i].type != GC_N64)  in gc_n64_process_packet()
231 		dev = gc->pads[i].dev;  in gc_n64_process_packet()
267 	struct gc *gc = input_get_drvdata(dev);  in gc_n64_play_effect()  local
280 		gc_n64_send_command(gc, GC_N64_CMD_03, target);  in gc_n64_play_effect()
281 		gc_n64_send_command(gc, GC_N64_CMD_80, target);  in gc_n64_play_effect()
282 		gc_n64_send_command(gc, GC_N64_CMD_01, 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_stop_bit(gc, target);  in gc_n64_play_effect()
290 		gc_n64_send_command(gc, GC_N64_CMD_03, target);  in gc_n64_play_effect()
291 		gc_n64_send_command(gc, GC_N64_CMD_c0, target);  in gc_n64_play_effect()
292 		gc_n64_send_command(gc, GC_N64_CMD_1b, target);  in gc_n64_play_effect()
294 			gc_n64_send_command(gc, cmd, target);  in gc_n64_play_effect()
295 		gc_n64_send_stop_bit(gc, target);  in gc_n64_play_effect()
353 static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)  in gc_nes_read_packet()  argument
357 	parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);  in gc_nes_read_packet()
359 	parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);  in gc_nes_read_packet()
363 		parport_write_data(gc->pd->port, GC_NES_POWER);  in gc_nes_read_packet()
364 		data[i] = parport_read_status(gc->pd->port) ^ 0x7f;  in gc_nes_read_packet()
366 		parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);  in gc_nes_read_packet()
370 static void gc_nes_process_packet(struct gc *gc)  in gc_nes_process_packet()  argument
378 	len = gc->pad_count[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH :  in gc_nes_process_packet()
379 			(gc->pad_count[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH);  in gc_nes_process_packet()
381 	gc_nes_read_packet(gc, len, data);  in gc_nes_process_packet()
385 		pad = &gc->pads[i];  in gc_nes_process_packet()
472 static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)  in gc_multi_read_packet()  argument
477 		parport_write_data(gc->pd->port, ~(1 << i));  in gc_multi_read_packet()
478 		data[i] = parport_read_status(gc->pd->port) ^ 0x7f;  in gc_multi_read_packet()
482 static void gc_multi_process_packet(struct gc *gc)  in gc_multi_process_packet()  argument
485 	int data_len = gc->pad_count[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH;  in gc_multi_process_packet()
490 	gc_multi_read_packet(gc, data_len, data);  in gc_multi_process_packet()
493 		pad = &gc->pads[i];  in gc_multi_process_packet()
562 static void gc_psx_command(struct gc *gc, int b, unsigned char *data)  in gc_psx_command()  argument
564 	struct parport *port = gc->pd->port;  in gc_psx_command()
577 			struct gc_pad *pad = &gc->pads[j];  in gc_psx_command()
583 		parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);  in gc_psx_command()
593 static void gc_psx_read_packet(struct gc *gc,  in gc_psx_read_packet()  argument
602 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  in gc_psx_read_packet()
605 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);  in gc_psx_read_packet()
610 	gc_psx_command(gc, 0x01, data2);	/* Access pad */  in gc_psx_read_packet()
611 	gc_psx_command(gc, 0x42, id);		/* Get device ids */  in gc_psx_read_packet()
612 	gc_psx_command(gc, 0, data2);		/* Dump status */  in gc_psx_read_packet()
616 		struct gc_pad *pad = &gc->pads[i];  in gc_psx_read_packet()
627 		gc_psx_command(gc, 0, data2);  in gc_psx_read_packet()
634 	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  in gc_psx_read_packet()
722 static void gc_psx_process_packet(struct gc *gc)  in gc_psx_process_packet()  argument
729 	gc_psx_read_packet(gc, data, id);  in gc_psx_process_packet()
732 		pad = &gc->pads[i];  in gc_psx_process_packet()
744 	struct gc *gc = from_timer(gc, t, timer);  in gc_timer()  local
750 	if (gc->pad_count[GC_N64])  in gc_timer()
751 		gc_n64_process_packet(gc);  in gc_timer()
757 	if (gc->pad_count[GC_NES] ||  in gc_timer()
758 	    gc->pad_count[GC_SNES] ||  in gc_timer()
759 	    gc->pad_count[GC_SNESMOUSE]) {  in gc_timer()
760 		gc_nes_process_packet(gc);  in gc_timer()
767 	if (gc->pad_count[GC_MULTI] || gc->pad_count[GC_MULTI2])  in gc_timer()
768 		gc_multi_process_packet(gc);  in gc_timer()
774 	if (gc->pad_count[GC_PSX] || gc->pad_count[GC_DDR])  in gc_timer()
775 		gc_psx_process_packet(gc);  in gc_timer()
777 	mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);  in gc_timer()
782 	struct gc *gc = input_get_drvdata(dev);  in gc_open()  local
785 	err = mutex_lock_interruptible(&gc->mutex);  in gc_open()
789 	if (!gc->used++) {  in gc_open()
790 		parport_claim(gc->pd);  in gc_open()
791 		parport_write_control(gc->pd->port, 0x04);  in gc_open()
792 		mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);  in gc_open()
795 	mutex_unlock(&gc->mutex);  in gc_open()
801 	struct gc *gc = input_get_drvdata(dev);  in gc_close()  local
803 	mutex_lock(&gc->mutex);  in gc_close()
804 	if (!--gc->used) {  in gc_close()
805 		del_timer_sync(&gc->timer);  in gc_close()
806 		parport_write_control(gc->pd->port, 0x00);  in gc_close()
807 		parport_release(gc->pd);  in gc_close()
809 	mutex_unlock(&gc->mutex);  in gc_close()
812 static int gc_setup_pad(struct gc *gc, int idx, int pad_type)  in gc_setup_pad()  argument
814 	struct gc_pad *pad = &gc->pads[idx];  in gc_setup_pad()
833 		 "%s/input%d", gc->pd->port->name, idx);  in gc_setup_pad()
842 	input_set_drvdata(input_dev, gc);  in gc_setup_pad()
855 	gc->pad_count[pad_type]++;  in gc_setup_pad()
935 	struct gc *gc;  in gc_attach()  local
967 	gc = kzalloc(sizeof(struct gc), GFP_KERNEL);  in gc_attach()
968 	if (!gc) {  in gc_attach()
973 	mutex_init(&gc->mutex);  in gc_attach()
974 	gc->pd = pd;  in gc_attach()
975 	gc->parportno = pp->number;  in gc_attach()
976 	timer_setup(&gc->timer, gc_timer, 0);  in gc_attach()
982 		if (gc_setup_pad(gc, i, pads[i]))  in gc_attach()
993 	gc_base[port_idx] = gc;  in gc_attach()
998 		if (gc->pads[i].dev)  in gc_attach()
999 			input_unregister_device(gc->pads[i].dev);  in gc_attach()
1001 	kfree(gc);  in gc_attach()
1009 	struct gc *gc;  in gc_detach()  local
1019 	gc = gc_base[i];  in gc_detach()
1023 		if (gc->pads[i].dev)  in gc_detach()
1024 			input_unregister_device(gc->pads[i].dev);  in gc_detach()
1025 	parport_unregister_device(gc->pd);  in gc_detach()
1026 	kfree(gc);  in gc_detach()