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Subject[PATCH v3 1/2] si2168: Set TS clock mode and frequency
Date
Some devices require a higher TS clock frequency to demodulate some
muxes. This adds two optional parameters to control the TS clock
frequency mode as well as the frequency.

Signed-off-by: Thomas Hollstegge <thomas.hollstegge@gmail.com>
---
drivers/media/dvb-frontends/si2168.c | 20 +++++++++++++++++++-
drivers/media/dvb-frontends/si2168.h | 8 ++++++++
drivers/media/dvb-frontends/si2168_priv.h | 2 ++
3 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
index 324493e..b05e677 100644
--- a/drivers/media/dvb-frontends/si2168.c
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -92,13 +92,15 @@ static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)
dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire);

/* set TS_MODE property */
- memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
+ memcpy(cmd.args, "\x14\x00\x01\x10\x00\x00", 6);
if (acquire)
cmd.args[4] |= dev->ts_mode;
else
cmd.args[4] |= SI2168_TS_TRISTATE;
if (dev->ts_clock_gapped)
cmd.args[4] |= 0x40;
+ cmd.args[4] |= (dev->ts_clock_mode & 0x03) << 4;
+
cmd.wlen = 6;
cmd.rlen = 4;
ret = si2168_cmd_execute(client, &cmd);
@@ -398,6 +400,18 @@ static int si2168_set_frontend(struct dvb_frontend *fe)
if (ret)
goto err;

+ /* set TS frequency */
+ if (dev->ts_clock_freq) {
+ memcpy(cmd.args, "\x14\x00\x0d\x10", 4);
+ cmd.args[4] = ((dev->ts_clock_freq / 10000) >> 0) & 0xff;
+ cmd.args[5] = ((dev->ts_clock_freq / 10000) >> 8) & 0xff;
+ cmd.wlen = 6;
+ cmd.rlen = 4;
+ ret = si2168_cmd_execute(client, &cmd);
+ if (ret)
+ goto err;
+ }
+
memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
cmd.wlen = 6;
@@ -806,6 +820,10 @@ static int si2168_probe(struct i2c_client *client,
dev->ts_mode = config->ts_mode;
dev->ts_clock_inv = config->ts_clock_inv;
dev->ts_clock_gapped = config->ts_clock_gapped;
+ dev->ts_clock_mode = config->ts_clock_mode;
+ if (dev->ts_clock_mode == 0)
+ dev->ts_clock_mode = SI2168_TS_CLOCK_MODE_AUTO_ADAPT;
+ dev->ts_clock_freq = config->ts_clock_freq;
dev->spectral_inversion = config->spectral_inversion;

dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n",
diff --git a/drivers/media/dvb-frontends/si2168.h b/drivers/media/dvb-frontends/si2168.h
index d519edd..3f52ee8 100644
--- a/drivers/media/dvb-frontends/si2168.h
+++ b/drivers/media/dvb-frontends/si2168.h
@@ -47,6 +47,14 @@ struct si2168_config {
/* TS clock gapped */
bool ts_clock_gapped;

+ /* TS clock mode */
+#define SI2168_TS_CLOCK_MODE_AUTO_ADAPT 0x01
+#define SI2168_TS_CLOCK_MODE_MANUAL 0x02
+ u8 ts_clock_mode;
+
+ /* TS clock frequency (for manual mode) */
+ u32 ts_clock_freq;
+
/* Inverted spectrum */
bool spectral_inversion;
};
diff --git a/drivers/media/dvb-frontends/si2168_priv.h b/drivers/media/dvb-frontends/si2168_priv.h
index 2d362e1..8173d6c 100644
--- a/drivers/media/dvb-frontends/si2168_priv.h
+++ b/drivers/media/dvb-frontends/si2168_priv.h
@@ -48,6 +48,8 @@ struct si2168_dev {
u8 ts_mode;
bool ts_clock_inv;
bool ts_clock_gapped;
+ u8 ts_clock_mode;
+ u32 ts_clock_freq;
bool spectral_inversion;
};

--
2.7.4
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