On Tue, Jul 09, 2019 at 08:39:32PM +0200, Jan Pieter van Woerkom wrote:
> From: Jan Pieter van Woerkom <jp@xxxxxxx>
>
> Adds support for the "Mygica T230C v2" into the "dvbsky" driver.
> A small enhancement is also needed in the si2168 demodulator
> driver, and a USB device ID in dvb-usb-ids.h .
>
> This is v3.5 of the proposed patch, based on feedback from Sean
> Young and Antti Palosaari.
> Tested by patch author on DVB(T/T2/C).
> Tested by Frank Rysanek on a T230C v2: can tune into locally
> available DVB-T and DVB-T2 muxes, video and audio playback works.
> Applies cleanly against Linux 5.2 .
>
> The T230C v2 hardware needs a mode of the si2168 chip to be
> set for which the si2168 driver previously had no support.
> This patch uses a specific measure to configure this on the
> T230C v2 hardware only - see the flag passed via the ts_mode
> attribute and its dependency on USB_PID_MYGICA_T230C2. Other
> devices using the si2168 demodulator driver are not affected.
>
> Signed-off-by: Jan Pieter van Woerkom <jp@xxxxxxx>
> Tested-by: Frank Rysanek <Frantisek.Rysanek@xxxxxxx>
> ---
> diff -ru a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
> --- a/drivers/media/dvb-frontends/si2168.c 2019-07-08 00:41:56.000000000 +0200
> +++ b/drivers/media/dvb-frontends/si2168.c 2019-07-09 18:47:59.514873658 +0200
> @@ -82,8 +82,18 @@
>
> dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire);
>
> + /* set manual value */
> + if (dev->ts_mode & SI2168_TS_CLK_MANUAL) {
> + memcpy(cmd.args, "\x14\x00\x0d\x10\xe8\x03", 6);
> + cmd.wlen = 6;
> + cmd.rlen = 4;
> + ret = si2168_cmd_execute(client, &cmd);
> + if (ret)
> + return ret;
> + }
> /* set TS_MODE property */
> - memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
> + memcpy(cmd.args, "\x14\x00\x01\x10\x00\x00", 6);
Here byte at offset 4 is now 0 rather than 0x10.
> + cmd.args[4] = dev->ts_mode & (SI2168_TS_CLK_AUTO|SI2168_TS_CLK_MANUAL);
The many existing frontends which use the si2168 do have not have ts_mode
bit SI2168_TS_CLK_AUTO (0x010) set. So, this changes what is sent for
those drivers. Is that intended?
Thanks,
Sean
> if (acquire)
> cmd.args[4] |= dev->ts_mode;
> else
> diff -ru a/drivers/media/dvb-frontends/si2168.h b/drivers/media/dvb-frontends/si2168.h
> --- a/drivers/media/dvb-frontends/si2168.h 2019-07-08 00:41:56.000000000 +0200
> +++ b/drivers/media/dvb-frontends/si2168.h 2019-07-09 18:47:59.514873658 +0200
> @@ -30,6 +30,8 @@
> #define SI2168_TS_PARALLEL 0x06
> #define SI2168_TS_SERIAL 0x03
> #define SI2168_TS_TRISTATE 0x00
> +#define SI2168_TS_CLK_AUTO 0x10
> +#define SI2168_TS_CLK_MANUAL 0x20
> u8 ts_mode;
>
> /* TS clock inverted */
