V4L/DVB (5964): Fixed remote control for dib0700 with new firmware

The new firmware returns the data of the REQUEST_POLL_RC request in
reversed order. The default is RC5, but it can be adjusted using a
module parameter.
Signed-off-by: Janne Grunau <janne-dvb@grunau.be>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/dvb/dvb-usb/dib0700.h

@@ -30,6 +30,7 @@ extern int dvb_usb_dib0700_debug;
 	// 1 Byte: 4MSB(1 = enable streaming, 0 = disable streaming) 4LSB(Video Mode: 0 = MPEG2 188Bytes, 1 = Analog)
 	// 2 Byte: MPEG2 mode:  4MSB(1 = Master Mode, 0 = Slave Mode) 4LSB(Channel 1 = bit0, Channel 2 = bit1)
 	// 2 Byte: Analog mode: 4MSB(0 = 625 lines, 1 = 525 lines)    4LSB(     "                "           )
+#define REQUEST_SET_RC       0x11
 #define REQUEST_GET_VERSION  0x15
 
 struct dib0700_state {

drivers/media/dvb/dvb-usb/dib0700_core.c

@@ -13,6 +13,10 @@ int dvb_usb_dib0700_debug;
 module_param_named(debug,dvb_usb_dib0700_debug, int, 0644);
 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS);
 
+static int dvb_usb_dib0700_ir_proto = 1;
+module_param(dvb_usb_dib0700_ir_proto, int, 0644);
+MODULE_PARM_DESC(dvb_usb_dib0700_ir_proto, "set ir protocol (0=NEC, 1=RC5 (default), 2=RC6).");
+
 /* expecting rx buffer: request data[0] data[1] ... data[2] */
 static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
 {
@@ -260,14 +264,29 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 	return dib0700_ctrl_wr(adap->dev, b, 4);
 }
 
+static int dib0700_rc_setup(struct dvb_usb_device *d)
+{
+	u8 rc_setup[3] = {REQUEST_SET_RC, dvb_usb_dib0700_ir_proto, 0};
+	int i = dib0700_ctrl_wr(d, rc_setup, 3);
+	if (i<0) {
+		err("ir protocol setup failed");
+		return -1;
+	}
+	return 0;
+}
+
 static int dib0700_probe(struct usb_interface *intf,
 		const struct usb_device_id *id)
 {
 	int i;
+	struct dvb_usb_device *dev;
 
 	for (i = 0; i < dib0700_device_count; i++)
-		if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE, NULL) == 0)
+		if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE, &dev) == 0)
+		{
+			dib0700_rc_setup(dev);
 			return 0;
+		}
 
 	return -ENODEV;
 }

drivers/media/dvb/dvb-usb/dib0700_devices.c

@@ -275,19 +275,19 @@ static int dib0700_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 	i=dib0700_ctrl_rd(d,rc_request,2,key,4);
 	if (i<=0) {
 		err("RC Query Failed");
-		return 0;
+		return -1;
 	}
 	if (key[0]==0 && key[1]==0 && key[2]==0 && key[3]==0) return 0;
-	if (key[1]!=st->rc_toggle) {
+	if (key[3-1]!=st->rc_toggle) {
 		for (i=0;i<d->props.rc_key_map_size; i++) {
-			if (keymap[i].custom == key[2] && keymap[i].data == key[3]) {
+			if (keymap[i].custom == key[3-2] && keymap[i].data == key[3-3]) {
 				*event = keymap[i].event;
 				*state = REMOTE_KEY_PRESSED;
-				st->rc_toggle=key[1];
+				st->rc_toggle=key[3-1];
 				return 0;
 			}
 		}
-		err("Unknown remote controller key : %2X %2X",(int)key[2],(int)key[3]);
+		err("Unknown remote controller key : %2X %2X",(int)key[3-2],(int)key[3-3]);
 	}
 	return 0;
 }