[media] rtl28xxu: add support for Elonics E4000 tuner

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/dvb-usb-v2/Kconfig

@@ -141,6 +141,7 @@ config DVB_USB_RTL28XXU
 	select MEDIA_TUNER_MXL5005S if MEDIA_SUBDRV_AUTOSELECT
 	select MEDIA_TUNER_FC0012 if MEDIA_SUBDRV_AUTOSELECT
 	select MEDIA_TUNER_FC0013 if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_E4000 if MEDIA_SUBDRV_AUTOSELECT
 	help
 	  Say Y here to support the Realtek RTL28xxU DVB USB receiver.
 

drivers/media/usb/dvb-usb-v2/rtl28xxu.c

@@ -30,6 +30,7 @@
 #include "mxl5005s.h"
 #include "fc0012.h"
 #include "fc0013.h"
+#include "e4000.h"
 
 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 
@@ -625,10 +626,11 @@ static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
 	ret = rtl28xxu_ctrl_msg(d, &req_e4000);
 	if (ret == 0 && buf[0] == 0x40) {
 		priv->tuner = TUNER_RTL2832_E4000;
-		/* TODO implement tuner */
+		/* FIXME: do not abuse fc0012 settings */
+		rtl2832_config = &rtl28xxu_rtl2832_fc0012_config;
 		dev_info(&d->udev->dev, "%s: E4000 tuner found",
 				KBUILD_MODNAME);
-		goto unsupported;
+		goto found;
 	}
 
 	/* check TDA18272 ID register; reg=00 val=c760  */
@@ -746,6 +748,11 @@ static int rtl2831u_tuner_attach(struct dvb_usb_adapter *adap)
 	return ret;
 }
 
+static const struct e4000_config rtl2832u_e4000_config = {
+	.i2c_addr = 0x64,
+	.clock = 28800000,
+};
+
 static int rtl2832u_tuner_attach(struct dvb_usb_adapter *adap)
 {
 	int ret;
@@ -774,6 +781,10 @@ static int rtl2832u_tuner_attach(struct dvb_usb_adapter *adap)
 		adap->fe[0]->ops.read_signal_strength =
 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
 		return 0;
+	case TUNER_RTL2832_E4000:
+		fe = dvb_attach(e4000_attach, adap->fe[0], &d->i2c_adap,
+				&rtl2832u_e4000_config);
+		break;
 	default:
 		fe = NULL;
 		dev_err(&d->udev->dev, "%s: unknown tuner=%d\n", KBUILD_MODNAME,
@@ -1223,6 +1234,8 @@ static const struct usb_device_id rtl28xxu_id_table[] = {
 		&rtl2832u_props, "G-Tek Electronics Group Lifeview LV5TDLX DVB-T", NULL) },
 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
 		&rtl2832u_props, "NOXON DAB/DAB+ USB dongle", NULL) },
+	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2838,
+		&rtl2832u_props, "Realtek RTL2832U reference design", NULL) },
 	{ }
 };
 MODULE_DEVICE_TABLE(usb, rtl28xxu_id_table);