1 // SPDX-License-Identifier: GPL-2.0+
43 		dev_printk(KERN_DEBUG, &ir->dev->intf->dev,		\
48  * Polling structure used by em28xx IR's
65 	int polling;  member
79  * I2C IR based get keycodes - should be used with ir-kbd-i2c
93 		return -EIO;  in em28xx_get_key_terratec()
123 		return -EIO;  in em28xx_get_key_em_haup()
152 		return -EIO;  in em28xx_get_key_pinnacle_usb_grey()
170 			.addr = i2c_dev->addr,  in em28xx_get_key_winfast_usbii_deluxe()
174 			.addr = i2c_dev->addr,  in em28xx_get_key_winfast_usbii_deluxe()
182 	if (i2c_transfer(i2c_dev->adapter, msg, 2) != 2)  in em28xx_get_key_winfast_usbii_deluxe()
183 		return -EIO;  in em28xx_get_key_winfast_usbii_deluxe()
189 	if (i2c_transfer(i2c_dev->adapter, msg, 2) != 2)  in em28xx_get_key_winfast_usbii_deluxe()
190 		return -EIO;  in em28xx_get_key_winfast_usbii_deluxe()
207 	struct em28xx *dev = ir->dev;  in default_polling_getkey()
215 	rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR,  in default_polling_getkey()
221 	poll_result->toggle_bit = (msg[0] >> 7);  in default_polling_getkey()
224 	poll_result->read_count = (msg[0] & 0x7f);  in default_polling_getkey()
227 	switch (ir->rc_proto) {  in default_polling_getkey()
229 		poll_result->protocol = RC_PROTO_RC5;  in default_polling_getkey()
230 		poll_result->scancode = RC_SCANCODE_RC5(msg[1], msg[2]);  in default_polling_getkey()
234 		poll_result->protocol = RC_PROTO_NEC;  in default_polling_getkey()
235 		poll_result->scancode = RC_SCANCODE_NEC(msg[1], msg[2]);  in default_polling_getkey()
239 		poll_result->protocol = RC_PROTO_UNKNOWN;  in default_polling_getkey()
240 		poll_result->scancode = msg[1] << 8 | msg[2];  in default_polling_getkey()
250 	struct em28xx *dev = ir->dev;  in em2874_polling_getkey()
256 	 * on registers 0x51-55  in em2874_polling_getkey()
258 	rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR,  in em2874_polling_getkey()
264 	poll_result->toggle_bit = (msg[0] >> 7);  in em2874_polling_getkey()
267 	poll_result->read_count = (msg[0] & 0x7f);  in em2874_polling_getkey()
271 	 * Remote Control Data (Reg 0x53-0x55)  in em2874_polling_getkey()
273 	switch (ir->rc_proto) {  in em2874_polling_getkey()
275 		poll_result->protocol = RC_PROTO_RC5;  in em2874_polling_getkey()
276 		poll_result->scancode = RC_SCANCODE_RC5(msg[1], msg[2]);  in em2874_polling_getkey()
280 		poll_result->scancode = ir_nec_bytes_to_scancode(msg[1], msg[2], msg[3], msg[4],  in em2874_polling_getkey()
281 								 &poll_result->protocol);  in em2874_polling_getkey()
285 		poll_result->protocol = RC_PROTO_RC6_0;  in em2874_polling_getkey()
286 		poll_result->scancode = RC_SCANCODE_RC6_0(msg[1], msg[2]);  in em2874_polling_getkey()
290 		poll_result->protocol = RC_PROTO_UNKNOWN;  in em2874_polling_getkey()
291 		poll_result->scancode = (msg[1] << 24) | (msg[2] << 16) |  in em2874_polling_getkey()
300  * Polling code for em28xx
309 	rc = ir->get_key_i2c(ir->i2c_client, &protocol, &scancode);  in em28xx_i2c_ir_handle_key()
311 		dprintk("ir->get_key_i2c() failed: %d\n", rc);  in em28xx_i2c_ir_handle_key()
318 		rc_keydown(ir->rc, protocol, scancode, 0);  in em28xx_i2c_ir_handle_key()
329 	result = ir->get_key(ir, &poll_result);  in em28xx_ir_handle_key()
331 		dprintk("ir->get_key() failed: %d\n", result);  in em28xx_ir_handle_key()
335 	if (unlikely(poll_result.read_count != ir->last_readcount)) {  in em28xx_ir_handle_key()
339 		if (ir->full_code)  in em28xx_ir_handle_key()
340 			rc_keydown(ir->rc,  in em28xx_ir_handle_key()
345 			rc_keydown(ir->rc,  in em28xx_ir_handle_key()
350 		if (ir->dev->chip_id == CHIP_ID_EM2874 ||  in em28xx_ir_handle_key()
351 		    ir->dev->chip_id == CHIP_ID_EM2884)  in em28xx_ir_handle_key()
357 			 * non-zero read count as opposed to a readcount  in em28xx_ir_handle_key()
360 			ir->last_readcount = 0;  in em28xx_ir_handle_key()
362 			ir->last_readcount = poll_result.read_count;  in em28xx_ir_handle_key()
370 	if (ir->i2c_client) /* external i2c device */  in em28xx_ir_work()
374 	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));  in em28xx_ir_work()
379 	struct em28xx_IR *ir = rc->priv;  in em28xx_ir_start()
381 	INIT_DELAYED_WORK(&ir->work, em28xx_ir_work);  in em28xx_ir_start()
382 	schedule_delayed_work(&ir->work, 0);  in em28xx_ir_start()
389 	struct em28xx_IR *ir = rc->priv;  in em28xx_ir_stop()
391 	cancel_delayed_work_sync(&ir->work);  in em28xx_ir_stop()
396 	struct em28xx_IR *ir = rc_dev->priv;  in em2860_ir_change_protocol()
397 	struct em28xx *dev = ir->dev;  in em2860_ir_change_protocol()
401 		dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;  in em2860_ir_change_protocol()
402 		ir->full_code = 1;  in em2860_ir_change_protocol()
405 		dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;  in em2860_ir_change_protocol()
406 		ir->full_code = 1;  in em2860_ir_change_protocol()
411 		*rc_proto = ir->rc_proto;  in em2860_ir_change_protocol()
412 		return -EINVAL;  in em2860_ir_change_protocol()
414 	em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,  in em2860_ir_change_protocol()
417 	ir->rc_proto = *rc_proto;  in em2860_ir_change_protocol()
424 	struct em28xx_IR *ir = rc_dev->priv;  in em2874_ir_change_protocol()
425 	struct em28xx *dev = ir->dev;  in em2874_ir_change_protocol()
430 		dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;  in em2874_ir_change_protocol()
431 		ir->full_code = 1;  in em2874_ir_change_protocol()
434 		dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;  in em2874_ir_change_protocol()
436 		ir->full_code = 1;  in em2874_ir_change_protocol()
439 		dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;  in em2874_ir_change_protocol()
441 		ir->full_code = 1;  in em2874_ir_change_protocol()
446 		*rc_proto = ir->rc_proto;  in em2874_ir_change_protocol()
447 		return -EINVAL;  in em2874_ir_change_protocol()
450 	em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,  in em2874_ir_change_protocol()
453 	ir->rc_proto = *rc_proto;  in em2874_ir_change_protocol()
460 	struct em28xx_IR *ir = rc_dev->priv;  in em28xx_ir_change_protocol()
461 	struct em28xx *dev = ir->dev;  in em28xx_ir_change_protocol()
464 	switch (dev->chip_id) {  in em28xx_ir_change_protocol()
474 		dev_err(&ir->dev->intf->dev,  in em28xx_ir_change_protocol()
476 			dev->chip_id);  in em28xx_ir_change_protocol()
477 		return -EINVAL;  in em28xx_ir_change_protocol()
485 	 * Leadtek winfast tv USBII deluxe can find a non working IR-device  in em28xx_probe_i2c_ir()
494 		if (i2c_probe_func_quick_read(&dev->i2c_adap[dev->def_i2c_bus],  in em28xx_probe_i2c_ir()
500 	return -ENODEV;  in em28xx_probe_i2c_ir()
517 	for (i = 0; i < dev->num_button_polling_addresses; i++) {  in em28xx_query_buttons()
519 		regval = em28xx_read_reg(dev, dev->button_polling_addresses[i]);  in em28xx_query_buttons()
524 		while (dev->board.buttons[j].role >= 0 &&  in em28xx_query_buttons()
525 		       dev->board.buttons[j].role < EM28XX_NUM_BUTTON_ROLES) {  in em28xx_query_buttons()
528 			button = &dev->board.buttons[j];  in em28xx_query_buttons()
531 			if (button->reg_r != dev->button_polling_addresses[i]) {  in em28xx_query_buttons()
536 			is_pressed = regval & button->mask;  in em28xx_query_buttons()
537 			was_pressed = dev->button_polling_last_values[i]  in em28xx_query_buttons()
538 				       & button->mask;  in em28xx_query_buttons()
539 			if (button->inverted) {  in em28xx_query_buttons()
544 			if (is_pressed && button->reg_clearing)  in em28xx_query_buttons()
545 				em28xx_write_reg(dev, button->reg_clearing,  in em28xx_query_buttons()
546 						 (~regval & button->mask)  in em28xx_query_buttons()
547 						    | (regval & ~button->mask));  in em28xx_query_buttons()
553 			switch (button->role) {  in em28xx_query_buttons()
556 				input_report_key(dev->sbutton_input_dev,  in em28xx_query_buttons()
559 				input_report_key(dev->sbutton_input_dev,  in em28xx_query_buttons()
568 							       led->gpio_reg,  in em28xx_query_buttons()
569 							       led->gpio_mask);  in em28xx_query_buttons()
577 		/* Save current value for comparison during the next polling */  in em28xx_query_buttons()
578 		dev->button_polling_last_values[i] = regval;  in em28xx_query_buttons()
581 	schedule_delayed_work(&dev->buttons_query_work,  in em28xx_query_buttons()
582 			      msecs_to_jiffies(dev->button_polling_interval));  in em28xx_query_buttons()
587 	struct usb_device *udev = interface_to_usbdev(dev->intf);  in em28xx_register_snapshot_button()
591 	dev_info(&dev->intf->dev, "Registering snapshot button...\n");  in em28xx_register_snapshot_button()
594 		return -ENOMEM;  in em28xx_register_snapshot_button()
596 	usb_make_path(udev, dev->snapshot_button_path,  in em28xx_register_snapshot_button()
597 		      sizeof(dev->snapshot_button_path));  in em28xx_register_snapshot_button()
598 	strlcat(dev->snapshot_button_path, "/sbutton",  in em28xx_register_snapshot_button()
599 		sizeof(dev->snapshot_button_path));  in em28xx_register_snapshot_button()
601 	input_dev->name = "em28xx snapshot button";  in em28xx_register_snapshot_button()
602 	input_dev->phys = dev->snapshot_button_path;  in em28xx_register_snapshot_button()
603 	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);  in em28xx_register_snapshot_button()
604 	set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit);  in em28xx_register_snapshot_button()
605 	input_dev->keycodesize = 0;  in em28xx_register_snapshot_button()
606 	input_dev->keycodemax = 0;  in em28xx_register_snapshot_button()
607 	usb_to_input_id(udev, &input_dev->id);  in em28xx_register_snapshot_button()
608 	input_dev->dev.parent = &dev->intf->dev;  in em28xx_register_snapshot_button()
612 		dev_err(&dev->intf->dev, "input_register_device failed\n");  in em28xx_register_snapshot_button()
617 	dev->sbutton_input_dev = input_dev;  in em28xx_register_snapshot_button()
626 	dev->button_polling_interval = EM28XX_BUTTONS_DEBOUNCED_QUERY_INTERVAL;  in em28xx_init_buttons()
627 	while (dev->board.buttons[i].role >= 0 &&  in em28xx_init_buttons()
628 	       dev->board.buttons[i].role < EM28XX_NUM_BUTTON_ROLES) {  in em28xx_init_buttons()
629 		const struct em28xx_button *button = &dev->board.buttons[i];  in em28xx_init_buttons()
631 		/* Check if polling address is already on the list */  in em28xx_init_buttons()
633 		for (j = 0; j < dev->num_button_polling_addresses; j++) {  in em28xx_init_buttons()
634 			if (button->reg_r == dev->button_polling_addresses[j]) {  in em28xx_init_buttons()
639 		/* Check if max. number of polling addresses is exceeded */  in em28xx_init_buttons()
640 		if (addr_new && dev->num_button_polling_addresses  in em28xx_init_buttons()
642 			WARN_ONCE(1, "BUG: maximum number of button polling addresses exceeded.");  in em28xx_init_buttons()
646 		if (button->role == EM28XX_BUTTON_SNAPSHOT) {  in em28xx_init_buttons()
650 		} else if (button->role == EM28XX_BUTTON_ILLUMINATION) {  in em28xx_init_buttons()
653 				dev_err(&dev->intf->dev,  in em28xx_init_buttons()
658 		/* Add read address to list of polling addresses */  in em28xx_init_buttons()
660 			unsigned int index = dev->num_button_polling_addresses;  in em28xx_init_buttons()
662 			dev->button_polling_addresses[index] = button->reg_r;  in em28xx_init_buttons()
663 			dev->num_button_polling_addresses++;  in em28xx_init_buttons()
665 		/* Reduce polling interval if necessary */  in em28xx_init_buttons()
666 		if (!button->reg_clearing)  in em28xx_init_buttons()
667 			dev->button_polling_interval =  in em28xx_init_buttons()
674 	/* Start polling */  in em28xx_init_buttons()
675 	if (dev->num_button_polling_addresses) {  in em28xx_init_buttons()
676 		memset(dev->button_polling_last_values, 0,  in em28xx_init_buttons()
678 		schedule_delayed_work(&dev->buttons_query_work,  in em28xx_init_buttons()
679 				      msecs_to_jiffies(dev->button_polling_interval));  in em28xx_init_buttons()
685 	/* Cancel polling */  in em28xx_shutdown_buttons()
686 	cancel_delayed_work_sync(&dev->buttons_query_work);  in em28xx_shutdown_buttons()
687 	/* Clear polling addresses list */  in em28xx_shutdown_buttons()
688 	dev->num_button_polling_addresses = 0;  in em28xx_shutdown_buttons()
690 	if (dev->sbutton_input_dev) {  in em28xx_shutdown_buttons()
691 		dev_info(&dev->intf->dev, "Deregistering snapshot button\n");  in em28xx_shutdown_buttons()
692 		input_unregister_device(dev->sbutton_input_dev);  in em28xx_shutdown_buttons()
693 		dev->sbutton_input_dev = NULL;  in em28xx_shutdown_buttons()
699 	struct usb_device *udev = interface_to_usbdev(dev->intf);  in em28xx_ir_init()
702 	int err = -ENOMEM;  in em28xx_ir_init()
706 	if (dev->is_audio_only) {  in em28xx_ir_init()
711 	kref_get(&dev->ref);  in em28xx_ir_init()
712 	INIT_DELAYED_WORK(&dev->buttons_query_work, em28xx_query_buttons);  in em28xx_ir_init()
714 	if (dev->board.buttons)  in em28xx_ir_init()
717 	if (dev->board.has_ir_i2c) {  in em28xx_ir_init()
720 			dev->board.has_ir_i2c = 0;  in em28xx_ir_init()
721 			dev_warn(&dev->intf->dev,  in em28xx_ir_init()
722 				 "No i2c IR remote control device found.\n");  in em28xx_ir_init()
723 			return -ENODEV;  in em28xx_ir_init()
727 	if (!dev->board.ir_codes && !dev->board.has_ir_i2c) {  in em28xx_ir_init()
729 		dev_warn(&dev->intf->dev,  in em28xx_ir_init()
734 	dev_info(&dev->intf->dev, "Registering input extension\n");  in em28xx_ir_init()
738 		return -ENOMEM;  in em28xx_ir_init()
744 	ir->dev = dev;  in em28xx_ir_init()
745 	dev->ir = ir;  in em28xx_ir_init()
746 	ir->rc = rc;  in em28xx_ir_init()
748 	rc->priv = ir;  in em28xx_ir_init()
749 	rc->open = em28xx_ir_start;  in em28xx_ir_init()
750 	rc->close = em28xx_ir_stop;  in em28xx_ir_init()
752 	if (dev->board.has_ir_i2c) {	/* external i2c device */  in em28xx_ir_init()
753 		switch (dev->model) {  in em28xx_ir_init()
756 			rc->map_name = RC_MAP_EM_TERRATEC;  in em28xx_ir_init()
757 			ir->get_key_i2c = em28xx_get_key_terratec;  in em28xx_ir_init()
760 			rc->map_name = RC_MAP_PINNACLE_GREY;  in em28xx_ir_init()
761 			ir->get_key_i2c = em28xx_get_key_pinnacle_usb_grey;  in em28xx_ir_init()
764 			rc->map_name = RC_MAP_HAUPPAUGE;  in em28xx_ir_init()
765 			ir->get_key_i2c = em28xx_get_key_em_haup;  in em28xx_ir_init()
766 			rc->allowed_protocols = RC_PROTO_BIT_RC5;  in em28xx_ir_init()
769 			rc->map_name = RC_MAP_WINFAST_USBII_DELUXE;  in em28xx_ir_init()
770 			ir->get_key_i2c = em28xx_get_key_winfast_usbii_deluxe;  in em28xx_ir_init()
773 			err = -ENODEV;  in em28xx_ir_init()
777 		ir->i2c_client = kzalloc(sizeof(*ir->i2c_client), GFP_KERNEL);  in em28xx_ir_init()
778 		if (!ir->i2c_client)  in em28xx_ir_init()
780 		ir->i2c_client->adapter = &ir->dev->i2c_adap[dev->def_i2c_bus];  in em28xx_ir_init()
781 		ir->i2c_client->addr = i2c_rc_dev_addr;  in em28xx_ir_init()
782 		ir->i2c_client->flags = 0;  in em28xx_ir_init()
785 		switch (dev->chip_id) {  in em28xx_ir_init()
788 			rc->allowed_protocols = RC_PROTO_BIT_RC5 |  in em28xx_ir_init()
790 			ir->get_key = default_polling_getkey;  in em28xx_ir_init()
796 			ir->get_key = em2874_polling_getkey;  in em28xx_ir_init()
797 			rc->allowed_protocols = RC_PROTO_BIT_RC5 |  in em28xx_ir_init()
802 			err = -ENODEV;  in em28xx_ir_init()
806 		rc->change_protocol = em28xx_ir_change_protocol;  in em28xx_ir_init()
807 		rc->map_name = dev->board.ir_codes;  in em28xx_ir_init()
817 	ir->polling = 100; /* ms */  in em28xx_ir_init()
819 	usb_make_path(udev, ir->phys, sizeof(ir->phys));  in em28xx_ir_init()
820 	strlcat(ir->phys, "/input0", sizeof(ir->phys));  in em28xx_ir_init()
822 	rc->device_name = em28xx_boards[dev->model].name;  in em28xx_ir_init()
823 	rc->input_phys = ir->phys;  in em28xx_ir_init()
824 	usb_to_input_id(udev, &rc->input_id);  in em28xx_ir_init()
825 	rc->dev.parent = &dev->intf->dev;  in em28xx_ir_init()
826 	rc->driver_name = MODULE_NAME;  in em28xx_ir_init()
833 	dev_info(&dev->intf->dev, "Input extension successfully initialized\n");  in em28xx_ir_init()
838 	kfree(ir->i2c_client);  in em28xx_ir_init()
839 	dev->ir = NULL;  in em28xx_ir_init()
847 	struct em28xx_IR *ir = dev->ir;  in em28xx_ir_fini()
849 	if (dev->is_audio_only) {  in em28xx_ir_fini()
854 	dev_info(&dev->intf->dev, "Closing input extension\n");  in em28xx_ir_fini()
862 	rc_unregister_device(ir->rc);  in em28xx_ir_fini()
864 	kfree(ir->i2c_client);  in em28xx_ir_fini()
868 	dev->ir = NULL;  in em28xx_ir_fini()
871 	kref_put(&dev->ref, em28xx_free_device);  in em28xx_ir_fini()
878 	struct em28xx_IR *ir = dev->ir;  in em28xx_ir_suspend()
880 	if (dev->is_audio_only)  in em28xx_ir_suspend()
883 	dev_info(&dev->intf->dev, "Suspending input extension\n");  in em28xx_ir_suspend()
885 		cancel_delayed_work_sync(&ir->work);  in em28xx_ir_suspend()
886 	cancel_delayed_work_sync(&dev->buttons_query_work);  in em28xx_ir_suspend()
897 	struct em28xx_IR *ir = dev->ir;  in em28xx_ir_resume()
899 	if (dev->is_audio_only)  in em28xx_ir_resume()
902 	dev_info(&dev->intf->dev, "Resuming input extension\n");  in em28xx_ir_resume()
908 		schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));  in em28xx_ir_resume()
909 	if (dev->num_button_polling_addresses)  in em28xx_ir_resume()
910 		schedule_delayed_work(&dev->buttons_query_work,  in em28xx_ir_resume()
911 				      msecs_to_jiffies(dev->button_polling_interval));  in em28xx_ir_resume()
936 MODULE_DESCRIPTION(DRIVER_DESC " - input interface");