From bc28d36bf11acc5b7bbd1a6ffbe315d15e7c0d0d Mon Sep 17 00:00:00 2001
From: Jan Pieter van Woerkom <jp@jpvw.nl>
Date: Wed, 17 Jul 2019 20:36:54 -0400
Subject: [PATCH] media: si2168: add support for Mygica T230C v2
Git-commit: bc28d36bf11acc5b7bbd1a6ffbe315d15e7c0d0d
Patch-mainline: v5.4-rc1
References: bsc#1173776

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.

Signed-off-by: Jan Pieter van Woerkom <jp@jpvw.nl>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/media/dvb-frontends/si2168.c | 11 +++++++++++
 drivers/media/dvb-frontends/si2168.h |  1 +
 2 files changed, 12 insertions(+)

diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
index 168c503e9154..a574f1d77c56 100644
--- a/drivers/media/dvb-frontends/si2168.c
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -82,8 +82,19 @@ static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)
 
 	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);
+	if (dev->ts_mode & SI2168_TS_CLK_MANUAL)
+		cmd.args[4] = SI2168_TS_CLK_MANUAL;
 	if (acquire)
 		cmd.args[4] |= dev->ts_mode;
 	else
diff --git a/drivers/media/dvb-frontends/si2168.h b/drivers/media/dvb-frontends/si2168.h
index 3b04f84272d9..50dccb394efa 100644
--- a/drivers/media/dvb-frontends/si2168.h
+++ b/drivers/media/dvb-frontends/si2168.h
@@ -30,6 +30,7 @@ struct si2168_config {
 #define SI2168_TS_PARALLEL	0x06
 #define SI2168_TS_SERIAL	0x03
 #define SI2168_TS_TRISTATE	0x00
+#define SI2168_TS_CLK_MANUAL	0x20
 	u8 ts_mode;
 
 	/* TS clock inverted */
-- 
2.16.4