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authorMauro Carvalho Chehab <mchehab@infradead.org>2007-11-22 12:48:04 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-01-25 19:02:40 -0200
commit2800ae9cd669db0fc9993cbefae02f181343c295 (patch)
treeef53d214e6da4b6986c2b37e74d7e94c1247fb08
parent71a2ee37e8851f430d72daea0722908512d57f79 (diff)
V4L/DVB (6661): Remove firmware reload hack for analog
On some cases, xc2028/xc3028 wents into "turn off" mode. It seems that this happens when very weak signals are tuned. To solve this, specific standard reaload were done previously. Christopher patches changed this behavior to a complete firmware reload. This patch removes the hack. A much cleaner solution for this trouble is just to sent a xc2028/3028 software reset. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
-rw-r--r--drivers/media/video/tuner-xc2028.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c
index c231e7a74ff..a43a3398b7c 100644
--- a/drivers/media/video/tuner-xc2028.c
+++ b/drivers/media/video/tuner-xc2028.c
@@ -850,16 +850,21 @@ static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */ ,
mutex_lock(&priv->lock);
- /* HACK: It seems that specific firmware need to be reloaded
- when watching analog TV and freq is changed */
- if (new_mode != T_DIGITAL_TV)
- priv->cur_fw.type = 0;
-
tuner_dbg("should set frequency %d kHz\n", freq / 1000);
if (check_firmware(fe, new_mode, std, bandwidth) < 0)
goto ret;
+ /* On some cases xc2028 can disable video output, if
+ * very weak signals are received. By sending a soft
+ * reset, this is re-enabled. So, it is better to always
+ * send a soft reset before changing channels, to be sure
+ * that xc2028 will be in a safe state.
+ * Maybe this might also be needed for DTV.
+ */
+ if (new_mode != T_DIGITAL_TV)
+ rc = send_seq(priv, {0x00, 0x00});
+
if (new_mode == T_DIGITAL_TV) {
offset = 2750000;
if (priv->cur_fw.type & DTV7)