1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * IgorPlug-USB IR Receiver
7  * Supports the standard homebrew IgorPlugUSB receiver with Igor's firmware.
8  * See http://www.cesko.host.sk/IgorPlugUSB/IgorPlug-USB%20(AVR)_eng.htm
12  *	<hochstein@algo.informatik.tu-darmstadt.de>
19 #include <media/rc-core.h>
21 #define DRIVER_DESC		"IgorPlug-USB IR Receiver"
46 static void igorplugusb_cmd(struct igorplugusb *ir, int cmd);
48 static void igorplugusb_irdata(struct igorplugusb *ir, unsigned len)  in igorplugusb_irdata()  argument
53 	dev_dbg(ir->dev, "irdata: %*ph (len=%u)", len, ir->buf_in, len);  in igorplugusb_irdata()
61 	overflow = ir->buf_in[2];  in igorplugusb_irdata()
65 		dev_err(ir->dev, "receive overflow invalid: %u", overflow);  in igorplugusb_irdata()
68 			dev_warn(ir->dev, "receive overflow, at least %u lost",  in igorplugusb_irdata()
70 			ir_raw_event_reset(ir->rc);  in igorplugusb_irdata()
74 			rawir.duration = ir->buf_in[i] * 85;  in igorplugusb_irdata()
77 			ir_raw_event_store_with_filter(ir->rc, &rawir);  in igorplugusb_irdata()
84 		rawir.duration = ir->rc->timeout;  in igorplugusb_irdata()
86 		ir_raw_event_store_with_filter(ir->rc, &rawir);  in igorplugusb_irdata()
88 		ir_raw_event_handle(ir->rc);  in igorplugusb_irdata()
91 	igorplugusb_cmd(ir, SET_INFRABUFFER_EMPTY);  in igorplugusb_irdata()
97 	struct igorplugusb *ir = urb->context;  in igorplugusb_callback()  local
99 	req = (struct usb_ctrlrequest *)urb->setup_packet;  in igorplugusb_callback()
101 	switch (urb->status) {  in igorplugusb_callback()
103 		if (req->bRequest == GET_INFRACODE &&  in igorplugusb_callback()
104 					urb->actual_length > HEADERLEN)  in igorplugusb_callback()
105 			igorplugusb_irdata(ir, urb->actual_length);  in igorplugusb_callback()
106 		else /* request IR */  in igorplugusb_callback()
107 			mod_timer(&ir->timer, jiffies + msecs_to_jiffies(50));  in igorplugusb_callback()
109 	case -EPROTO:  in igorplugusb_callback()
110 	case -ECONNRESET:  in igorplugusb_callback()
111 	case -ENOENT:  in igorplugusb_callback()
112 	case -ESHUTDOWN:  in igorplugusb_callback()
116 		dev_warn(ir->dev, "Error: urb status = %d\n", urb->status);  in igorplugusb_callback()
117 		igorplugusb_cmd(ir, SET_INFRABUFFER_EMPTY);  in igorplugusb_callback()
122 static void igorplugusb_cmd(struct igorplugusb *ir, int cmd)  in igorplugusb_cmd()  argument
126 	ir->request.bRequest = cmd;  in igorplugusb_cmd()
127 	ir->urb->transfer_flags = 0;  in igorplugusb_cmd()
128 	ret = usb_submit_urb(ir->urb, GFP_ATOMIC);  in igorplugusb_cmd()
130 		dev_err(ir->dev, "submit urb failed: %d", ret);  in igorplugusb_cmd()
135 	struct igorplugusb *ir = from_timer(ir, t, timer);  in igorplugusb_timer()  local
137 	igorplugusb_cmd(ir, GET_INFRACODE);  in igorplugusb_timer()
146 	struct igorplugusb *ir;  in igorplugusb_probe()  local
148 	int ret = -ENOMEM;  in igorplugusb_probe()
151 	idesc = intf->cur_altsetting;  in igorplugusb_probe()
153 	if (idesc->desc.bNumEndpoints != 1) {  in igorplugusb_probe()
154 		dev_err(&intf->dev, "incorrect number of endpoints");  in igorplugusb_probe()
155 		return -ENODEV;  in igorplugusb_probe()
158 	ep = &idesc->endpoint[0].desc;  in igorplugusb_probe()
160 		dev_err(&intf->dev, "endpoint incorrect");  in igorplugusb_probe()
161 		return -ENODEV;  in igorplugusb_probe()
164 	ir = devm_kzalloc(&intf->dev, sizeof(*ir), GFP_KERNEL);  in igorplugusb_probe()
165 	if (!ir)  in igorplugusb_probe()
166 		return -ENOMEM;  in igorplugusb_probe()
168 	ir->dev = &intf->dev;  in igorplugusb_probe()
170 	timer_setup(&ir->timer, igorplugusb_timer, 0);  in igorplugusb_probe()
172 	ir->request.bRequest = GET_INFRACODE;  in igorplugusb_probe()
173 	ir->request.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;  in igorplugusb_probe()
174 	ir->request.wLength = cpu_to_le16(sizeof(ir->buf_in));  in igorplugusb_probe()
176 	ir->urb = usb_alloc_urb(0, GFP_KERNEL);  in igorplugusb_probe()
177 	if (!ir->urb)  in igorplugusb_probe()
180 	usb_fill_control_urb(ir->urb, udev,  in igorplugusb_probe()
181 		usb_rcvctrlpipe(udev, 0), (uint8_t *)&ir->request,  in igorplugusb_probe()
182 		ir->buf_in, sizeof(ir->buf_in), igorplugusb_callback, ir);  in igorplugusb_probe()
184 	usb_make_path(udev, ir->phys, sizeof(ir->phys));  in igorplugusb_probe()
190 	rc->device_name = DRIVER_DESC;  in igorplugusb_probe()
191 	rc->input_phys = ir->phys;  in igorplugusb_probe()
192 	usb_to_input_id(udev, &rc->input_id);  in igorplugusb_probe()
193 	rc->dev.parent = &intf->dev;  in igorplugusb_probe()
198 	rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER &  in igorplugusb_probe()
204 	rc->priv = ir;  in igorplugusb_probe()
205 	rc->driver_name = DRIVER_NAME;  in igorplugusb_probe()
206 	rc->map_name = RC_MAP_HAUPPAUGE;  in igorplugusb_probe()
207 	rc->timeout = MS_TO_US(100);  in igorplugusb_probe()
208 	rc->rx_resolution = 85;  in igorplugusb_probe()
210 	ir->rc = rc;  in igorplugusb_probe()
213 		dev_err(&intf->dev, "failed to register rc device: %d", ret);  in igorplugusb_probe()
217 	usb_set_intfdata(intf, ir);  in igorplugusb_probe()
219 	igorplugusb_cmd(ir, SET_INFRABUFFER_EMPTY);  in igorplugusb_probe()
223 	rc_free_device(ir->rc);  in igorplugusb_probe()
224 	usb_free_urb(ir->urb);  in igorplugusb_probe()
225 	del_timer(&ir->timer);  in igorplugusb_probe()
232 	struct igorplugusb *ir = usb_get_intfdata(intf);  in igorplugusb_disconnect()  local
234 	rc_unregister_device(ir->rc);  in igorplugusb_disconnect()
235 	del_timer_sync(&ir->timer);  in igorplugusb_disconnect()
237 	usb_kill_urb(ir->urb);  in igorplugusb_disconnect()
238 	usb_free_urb(ir->urb);  in igorplugusb_disconnect()