V4L/DVB (6699): pvrusb2: Use of virtual IR chip is a device-specific attribute

For Hauppauge 24xxx devices, the IR receiver is a custom piece of
logic that is very specific to the device.  The pvrusb2 driver can
virtualize this to make it look like a more normal IR receiver found
in other Hauppauge devices.  The decision of whether or not to enable
this virtualization however is a device-specific attribute, thus this
changeset.
Signed-off-by: NMike Isely <isely@pobox.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/pvrusb2/pvrusb2-devattr.c

@@ -85,6 +85,7 @@ const struct pvr2_device_desc pvr2_device_descriptions[] = {
 		.flag_has_cx25840 = !0,
 		.flag_has_wm8775 = !0,
 		.flag_has_hauppauge_rom = !0,
+		.flag_has_hauppauge_custom_ir = !0,
 		.signal_routing_scheme = PVR2_ROUTING_SCHEME_HAUPPAUGE,
 	},
 };

drivers/media/video/pvrusb2/pvrusb2-devattr.h

@@ -84,6 +84,10 @@ struct pvr2_device_desc {
 	/* Device has a wm8775 - this enables special additional logic to
 	   ensure that it is found. */
 	char flag_has_wm8775;
+
+	/* Device has IR hardware that can be faked into looking like a
+	   normal Hauppauge i2c IR receiver. */
+	char flag_has_hauppauge_custom_ir;
 };
 
 extern const struct pvr2_device_desc pvr2_device_descriptions[];

drivers/media/video/pvrusb2/pvrusb2-i2c-core.c

@@ -980,7 +980,7 @@ void pvr2_i2c_core_init(struct pvr2_hdw *hdw)
 		printk(KERN_INFO "%s: IR disabled\n",hdw->name);
 		hdw->i2c_func[0x18] = i2c_black_hole;
 	} else if (ir_mode[hdw->unit_number] == 1) {
-		if (hdw->hdw_desc->flag_has_cx25840) {
+		if (hdw->hdw_desc->flag_has_hauppauge_custom_ir) {
 			hdw->i2c_func[0x18] = i2c_24xxx_ir;
 		}
 	}