[media] rtl28xxu: move rtl2831u tuner probing to .read_config()

Move rtl2831u tuner probing correct place.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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

@@ -274,6 +274,87 @@ static struct i2c_algorithm rtl28xxu_i2c_algo = {
 	.functionality = rtl28xxu_i2c_func,
 };
 
+static int rtl2831u_read_config(struct dvb_usb_device *d)
+{
+	struct rtl28xxu_priv *priv = d_to_priv(d);
+	int ret;
+	u8 buf[1];
+	/* open RTL2831U/RTL2830 I2C gate */
+	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x08"};
+	/* tuner probes */
+	struct rtl28xxu_req req_mt2060 = {0x00c0, CMD_I2C_RD, 1, buf};
+	struct rtl28xxu_req req_qt1010 = {0x0fc4, CMD_I2C_RD, 1, buf};
+
+	dev_dbg(&d->udev->dev, "%s:\n", __func__);
+
+	/*
+	 * RTL2831U GPIOs
+	 * =========================================================
+	 * GPIO0 | tuner#0 | 0 off | 1 on  | MXL5005S (?)
+	 * GPIO2 | LED     | 0 off | 1 on  |
+	 * GPIO4 | tuner#1 | 0 on  | 1 off | MT2060
+	 */
+
+	/* GPIO direction */
+	ret = rtl28xx_wr_reg(d, SYS_GPIO_DIR, 0x0a);
+	if (ret)
+		goto err;
+
+	/* enable as output GPIO0, GPIO2, GPIO4 */
+	ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_EN, 0x15);
+	if (ret)
+		goto err;
+
+	/*
+	 * Probe used tuner. We need to know used tuner before demod attach
+	 * since there is some demod params needed to set according to tuner.
+	 */
+
+	/* demod needs some time to wake up */
+	msleep(20);
+
+	priv->tuner_name = "NONE";
+
+	/* open demod I2C gate */
+	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
+	if (ret)
+		goto err;
+
+	/* check QT1010 ID(?) register; reg=0f val=2c */
+	ret = rtl28xxu_ctrl_msg(d, &req_qt1010);
+	if (ret == 0 && buf[0] == 0x2c) {
+		priv->tuner = TUNER_RTL2830_QT1010;
+		priv->tuner_name = "QT1010";
+		goto found;
+	}
+
+	/* open demod I2C gate */
+	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
+	if (ret)
+		goto err;
+
+	/* check MT2060 ID register; reg=00 val=63 */
+	ret = rtl28xxu_ctrl_msg(d, &req_mt2060);
+	if (ret == 0 && buf[0] == 0x63) {
+		priv->tuner = TUNER_RTL2830_MT2060;
+		priv->tuner_name = "MT2060";
+		goto found;
+	}
+
+	/* assume MXL5005S */
+	priv->tuner = TUNER_RTL2830_MXL5005S;
+	priv->tuner_name = "MXL5005S";
+	goto found;
+
+found:
+	dev_dbg(&d->udev->dev, "%s: tuner=%s\n", __func__, priv->tuner_name);
+
+	return 0;
+err:
+	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
+	return ret;
+}
+
 static int rtl2832u_read_config(struct dvb_usb_device *d)
 {
 	struct rtl28xxu_priv *priv = d_to_priv(d);
@@ -445,97 +526,38 @@ static struct rtl2830_config rtl28xxu_rtl2830_mxl5005s_config = {
 
 static int rtl2831u_frontend_attach(struct dvb_usb_adapter *adap)
 {
-	int ret;
 	struct dvb_usb_device *d = adap_to_d(adap);
 	struct rtl28xxu_priv *priv = d_to_priv(d);
-	u8 buf[1];
 	struct rtl2830_config *rtl2830_config;
-	/* open RTL2831U/RTL2830 I2C gate */
-	struct rtl28xxu_req req_gate = { 0x0120, 0x0011, 0x0001, "\x08" };
-	/* for MT2060 tuner probe */
-	struct rtl28xxu_req req_mt2060 = { 0x00c0, CMD_I2C_RD, 1, buf };
-	/* for QT1010 tuner probe */
-	struct rtl28xxu_req req_qt1010 = { 0x0fc4, CMD_I2C_RD, 1, buf };
+	int ret;
 
 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
 
-	/*
-	 * RTL2831U GPIOs
-	 * =========================================================
-	 * GPIO0 | tuner#0 | 0 off | 1 on  | MXL5005S (?)
-	 * GPIO2 | LED     | 0 off | 1 on  |
-	 * GPIO4 | tuner#1 | 0 on  | 1 off | MT2060
-	 */
-
-	/* GPIO direction */
-	ret = rtl28xx_wr_reg(d, SYS_GPIO_DIR, 0x0a);
-	if (ret)
-		goto err;
-
-	/* enable as output GPIO0, GPIO2, GPIO4 */
-	ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_EN, 0x15);
-	if (ret)
-		goto err;
-
-	/*
-	 * Probe used tuner. We need to know used tuner before demod attach
-	 * since there is some demod params needed to set according to tuner.
-	 */
-
-	/* demod needs some time to wake up */
-	msleep(20);
-
-	/* open demod I2C gate */
-	ret = rtl28xxu_ctrl_msg(d, &req_gate);
-	if (ret)
-		goto err;
-
-	/* check QT1010 ID(?) register; reg=0f val=2c */
-	ret = rtl28xxu_ctrl_msg(d, &req_qt1010);
-	if (ret == 0 && buf[0] == 0x2c) {
-		priv->tuner = TUNER_RTL2830_QT1010;
+	switch (priv->tuner) {
+	case TUNER_RTL2830_QT1010:
 		rtl2830_config = &rtl28xxu_rtl2830_qt1010_config;
-		dev_dbg(&d->udev->dev, "%s: QT1010\n", __func__);
-		goto found;
-	} else {
-		dev_dbg(&d->udev->dev, "%s: QT1010 probe failed=%d - %02x\n",
-				__func__, ret, buf[0]);
-	}
-
-	/* open demod I2C gate */
-	ret = rtl28xxu_ctrl_msg(d, &req_gate);
-	if (ret)
-		goto err;
-
-	/* check MT2060 ID register; reg=00 val=63 */
-	ret = rtl28xxu_ctrl_msg(d, &req_mt2060);
-	if (ret == 0 && buf[0] == 0x63) {
-		priv->tuner = TUNER_RTL2830_MT2060;
+		break;
+	case TUNER_RTL2830_MT2060:
 		rtl2830_config = &rtl28xxu_rtl2830_mt2060_config;
-		dev_dbg(&d->udev->dev, "%s: MT2060\n", __func__);
-		goto found;
-	} else {
-		dev_dbg(&d->udev->dev, "%s: MT2060 probe failed=%d - %02x\n",
-				__func__, ret, buf[0]);
+		break;
+	case TUNER_RTL2830_MXL5005S:
+		rtl2830_config = &rtl28xxu_rtl2830_mxl5005s_config;
+		break;
+	default:
+		dev_err(&d->udev->dev, "%s: unknown tuner=%s\n",
+				KBUILD_MODNAME, priv->tuner_name);
+		ret = -ENODEV;
+		goto err;
 	}
 
-	/* assume MXL5005S */
-	ret = 0;
-	priv->tuner = TUNER_RTL2830_MXL5005S;
-	rtl2830_config = &rtl28xxu_rtl2830_mxl5005s_config;
-	dev_dbg(&d->udev->dev, "%s: MXL5005S\n", __func__);
-	goto found;
-
-found:
 	/* attach demodulator */
-	adap->fe[0] = dvb_attach(rtl2830_attach, rtl2830_config,
-		&d->i2c_adap);
-	if (adap->fe[0] == NULL) {
+	adap->fe[0] = dvb_attach(rtl2830_attach, rtl2830_config, &d->i2c_adap);
+	if (!adap->fe[0]) {
 		ret = -ENODEV;
 		goto err;
 	}
 
-	return ret;
+	return 0;
 err:
 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
 	return ret;
@@ -1264,6 +1286,7 @@ static const struct dvb_usb_device_properties rtl2831u_props = {
 
 	.power_ctrl = rtl2831u_power_ctrl,
 	.i2c_algo = &rtl28xxu_i2c_algo,
+	.read_config = rtl2831u_read_config,
 	.frontend_attach = rtl2831u_frontend_attach,
 	.tuner_attach = rtl2831u_tuner_attach,
 	.init = rtl28xxu_init,