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From:   Tomasz Maciej Nowak <tmn505@gmail.com>
To:     Antti Palosaari <crope@iki.fi>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] media: dvb: add support for TerraTec TC2 Stick (193534)
Date:   Sun, 29 Dec 2019 15:53:55 +0100
Message-Id: <20191229145355.6941-1-tmn505@gmail.com>
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Sender: linux-kernel-owner@vger.kernel.org
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Seems to be a clone of Logilink VG0022A. Supports DVB-C, DVB-T and
DVB-T2. Only terrestrial reception was tested on Polish and Czech
multiplexes.

Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>
---
 drivers/media/usb/dvb-usb-v2/af9035.c | 15 ++++++++++-----
 include/media/dvb-usb-ids.h           |  1 +
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/media/usb/dvb-usb-v2/af9035.c b/drivers/media/usb/dvb-usb-v2/af9035.c
index 792667ee5ebc..e1df2e7f7842 100644
--- a/drivers/media/usb/dvb-usb-v2/af9035.c
+++ b/drivers/media/usb/dvb-usb-v2/af9035.c
@@ -1621,9 +1621,10 @@ static int it930x_tuner_attach(struct dvb_usb_adapter *adap)
 	si2157_config.fe = adap->fe[0];
 
 	/*
-	 * HACK: The Logilink VG0022A has a bug: when the si2157
-	 * firmware that came with the device is replaced by a new
-	 * one, the I2C transfers to the tuner will return just 0xff.
+	 * HACK: The Logilink VG0022A and TerraTec TC2 Stick have
+	 * a bug: when the si2157 firmware that came with the device
+	 * is replaced by a new one, the I2C transfers to the tuner
+	 * will return just 0xff.
 	 *
 	 * Probably, the vendor firmware has some patch specifically
 	 * designed for this device. So, we can't replace by the
@@ -1633,8 +1634,10 @@ static int it930x_tuner_attach(struct dvb_usb_adapter *adap)
 	 * while we don't have that, the next best solution is to just
 	 * keep the original firmware at the device.
 	 */
-	if (le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_DEXATEK &&
-	    le16_to_cpu(d->udev->descriptor.idProduct) == 0x0100)
+	if ((le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_DEXATEK &&
+	    le16_to_cpu(d->udev->descriptor.idProduct) == 0x0100) ||
+	    (le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_TERRATEC &&
+	    le16_to_cpu(d->udev->descriptor.idProduct) == USB_PID_TERRATEC_CINERGY_TC2_STICK))
 		si2157_config.dont_load_firmware = true;
 
 	si2157_config.if_port = it930x_addresses_table[state->it930x_addresses].tuner_if_port;
@@ -2150,6 +2153,8 @@ static const struct usb_device_id af9035_id_table[] = {
 		&it930x_props, "AVerMedia TD310 DVB-T2", NULL) },
 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x0100,
 		&it930x_props, "Logilink VG0022A", NULL) },
+	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_TC2_STICK,
+		&it930x_props, "TerraTec Cinergy TC2 Stick", NULL) },
 	{ }
 };
 MODULE_DEVICE_TABLE(usb, af9035_id_table);
diff --git a/include/media/dvb-usb-ids.h b/include/media/dvb-usb-ids.h
index 1409230ad3a4..0ccb78a840d8 100644
--- a/include/media/dvb-usb-ids.h
+++ b/include/media/dvb-usb-ids.h
@@ -180,6 +180,7 @@
 #define USB_PID_TERRATEC_CINERGY_T_STICK_RC		0x0097
 #define USB_PID_TERRATEC_CINERGY_T_STICK_DUAL_RC	0x0099
 #define USB_PID_TERRATEC_CINERGY_T_STICK_BLACK_REV1	0x00a9
+#define USB_PID_TERRATEC_CINERGY_TC2_STICK		0x10b2
 #define USB_PID_TWINHAN_VP7041_COLD			0x3201
 #define USB_PID_TWINHAN_VP7041_WARM			0x3202
 #define USB_PID_TWINHAN_VP7020_COLD			0x3203
-- 
2.24.1