[PATCH 3/4] rtl28xxu: add RTL2832P + R828D support

[Antti Palosaari]

RTL2832P is version of RTL2832U with extra TS interface.
As for now, we support only integrated RTL2832 demod.

Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
 drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 39 +++++++++++++++++++++++++++++++++
 drivers/media/usb/dvb-usb-v2/rtl28xxu.h |  1 +
 2 files changed, 40 insertions(+)

diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c 
b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
index c0cd084..8c600b7 100644
--- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
+++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
@@ -377,6 +377,7 @@ static int rtl2832u_read_config(struct dvb_usb_device *d)
        struct rtl28xxu_req req_e4000 = {0x02c8, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_tda18272 = {0x00c0, CMD_I2C_RD, 2, buf};
        struct rtl28xxu_req req_r820t = {0x0034, CMD_I2C_RD, 1, buf};
+       struct rtl28xxu_req req_r828d = {0x0074, CMD_I2C_RD, 1, buf};
 
        dev_dbg(&d->udev->dev, "%s:\n", __func__);
 
@@ -489,6 +490,15 @@ static int rtl2832u_read_config(struct dvb_usb_device *d)
                goto found;
        }
 
+       /* check R828D ID register; reg=00 val=69 */
+       ret = rtl28xxu_ctrl_msg(d, &req_r828d);
+       if (ret == 0 && buf[0] == 0x69) {
+               priv->tuner = TUNER_RTL2832_R828D;
+               priv->tuner_name = "R828D";
+               goto found;
+       }
+
+
 found:
        dev_dbg(&d->udev->dev, "%s: tuner=%s\n", __func__, priv->tuner_name);
 
@@ -745,6 +755,7 @@ static int rtl2832u_frontend_attach(struct dvb_usb_adapter 
*adap)
                rtl2832_config = &rtl28xxu_rtl2832_e4000_config;
                break;
        case TUNER_RTL2832_R820T:
+       case TUNER_RTL2832_R828D:
                rtl2832_config = &rtl28xxu_rtl2832_r820t_config;
                break;
        default:
@@ -866,6 +877,13 @@ static const struct r820t_config rtl2832u_r820t_config = {
        .rafael_chip = CHIP_R820T,
 };
 
+static const struct r820t_config rtl2832u_r828d_config = {
+       .i2c_addr = 0x3a,
+       .xtal = 16000000,
+       .max_i2c_msg_len = 2,
+       .rafael_chip = CHIP_R828D,
+};
+
 static int rtl2832u_tuner_attach(struct dvb_usb_adapter *adap)
 {
        int ret;
@@ -923,6 +941,27 @@ 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;
                break;
+       case TUNER_RTL2832_R828D:
+               /* power off mn88472 demod on GPIO0 */
+               ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x00, 0x01);
+               if (ret)
+                       goto err;
+
+               ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x01);
+               if (ret)
+                       goto err;
+
+               ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x01, 0x01);
+               if (ret)
+                       goto err;
+
+               fe = dvb_attach(r820t_attach, adap->fe[0], &d->i2c_adap,
+                               &rtl2832u_r828d_config);
+
+               /* Use tuner to get the signal strength */
+               adap->fe[0]->ops.read_signal_strength =
+                               adap->fe[0]->ops.tuner_ops.get_rf_strength;
+               break;
        default:
                fe = NULL;
                dev_err(&d->udev->dev, "%s: unknown tuner=%d\n", KBUILD_MODNAME,
diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.h 
b/drivers/media/usb/dvb-usb-v2/rtl28xxu.h
index 729b354..2142bcb 100644
--- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.h
+++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.h
@@ -83,6 +83,7 @@ enum rtl28xxu_tuner {
        TUNER_RTL2832_TDA18272,
        TUNER_RTL2832_FC0013,
        TUNER_RTL2832_R820T,
+       TUNER_RTL2832_R828D,
 };
 
 struct rtl28xxu_req {
-- 
1.8.3.1

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