[2/3,media] af9035: init i2c already in it930x_frontend_attach
Commit Message
i2c bus is already needed when the frontend is probed,
so init it already in it930x_frontend_attach
That prevents errors like
si2168: probe of 6-0067 failed with error -5
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
---
drivers/media/usb/dvb-usb-v2/af9035.c | 43 ++++++++++++++++++++++++++++++++++-
1 file changed, 42 insertions(+), 1 deletion(-)
Comments
On Wed, 15 Mar 2017 23:22:09 +0100
Andreas Kemnade <andreas@kemnade.info> wrote:
> i2c bus is already needed when the frontend is probed,
> so init it already in it930x_frontend_attach
> That prevents errors like
> si2168: probe of 6-0067 failed with error -5
>
> Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
seems to be also needed for the
CINERGY TC2 Stick
Quoting from
https://www.linuxmintusers.de/index.php?topic=41074.30
Mar 26 12:44:14 minimoose kernel: [ 732.884876] usb 1-3: dvb_usb_v2: found a 'TerraTec Cinergy TC2 Stick' in warm state
Mar 26 12:44:14 minimoose kernel: [ 732.885012] usb 1-3: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
Mar 26 12:44:14 minimoose kernel: [ 732.885245] dvbdev: DVB: registering new adapter (TerraTec Cinergy TC2 Stick)
Mar 26 12:44:14 minimoose kernel: [ 732.885254] usb 1-3: media controller created
Mar 26 12:44:14 minimoose kernel: [ 732.886117] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
Mar 26 12:44:14 minimoose kernel: [ 732.890589] si2168: probe of 8-0067 failed with error -5
Regards,
Andreas Kemnade
@@ -1214,8 +1214,49 @@ static int it930x_frontend_attach(struct dvb_usb_adapter *adap)
struct si2168_config si2168_config;
struct i2c_adapter *adapter;
- dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);
+ dev_dbg(&intf->dev, "%s adap->id=%d\n", __func__, adap->id);
+
+ /* I2C master bus 2 clock speed 300k */
+ ret = af9035_wr_reg(d, 0x00f6a7, 0x07);
+ if (ret < 0)
+ goto err;
+
+ /* I2C master bus 1,3 clock speed 300k */
+ ret = af9035_wr_reg(d, 0x00f103, 0x07);
+ if (ret < 0)
+ goto err;
+
+ /* set gpio11 low */
+ ret = af9035_wr_reg_mask(d, 0xd8d4, 0x01, 0x01);
+ if (ret < 0)
+ goto err;
+
+ ret = af9035_wr_reg_mask(d, 0xd8d5, 0x01, 0x01);
+ if (ret < 0)
+ goto err;
+
+ ret = af9035_wr_reg_mask(d, 0xd8d3, 0x01, 0x01);
+ if (ret < 0)
+ goto err;
+ /* Tuner enable using gpiot2_en, gpiot2_on and gpiot2_o (reset) */
+ ret = af9035_wr_reg_mask(d, 0xd8b8, 0x01, 0x01);
+ if (ret < 0)
+ goto err;
+
+ ret = af9035_wr_reg_mask(d, 0xd8b9, 0x01, 0x01);
+ if (ret < 0)
+ goto err;
+
+ ret = af9035_wr_reg_mask(d, 0xd8b7, 0x00, 0x01);
+ if (ret < 0)
+ goto err;
+
+ msleep(200);
+
+ ret = af9035_wr_reg_mask(d, 0xd8b7, 0x01, 0x01);
+ if (ret < 0)
+ goto err;
memset(&si2168_config, 0, sizeof(si2168_config));
si2168_config.i2c_adapter = &adapter;
si2168_config.fe = &adap->fe[0];