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[PATCH] dvb: frontend: or51132: remove bogus optimization attempt 

This fix has also been applied to lgdt330x.  There is an optimization that
keeps track of the frequency tuned by the digital decoder.  The digital driver
does not set the frequency if it has not changed since it was tuned.  The
analog tuner driver knows nothing about the frequency saved by the digital
driver.  When the frequency is set using the video4linux code with tvtime, the
hardware get changed but the digital driver's state does not get updated.
Switch back to the same digital channel and the driver finds no change in
frequency so the tuner is not reset to the digital frequency.  The work around
is to remove the check and always set the tuner to the specified frequency.

Signed-off-by: Mac Michaels <wmichaels1@earthlink.net>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Mac Michaels 2005-09-09 13:02:40 -07:00 committed by Linus Torvalds
parent 593cbf3dcb
commit 80e27e2061
1 changed files with 11 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/media/dvb/frontends/or51132.c
View File

@ -370,22 +370,19 @@ static int or51132_set_parameters(struct dvb_frontend* fe,
or51132_setmode(fe);
}
/* Change only if we are actually changing the channel */
if (state->current_frequency != param->frequency) {
dvb_pll_configure(state->config->pll_desc, buf,
param->frequency, 0);
dprintk("set_parameters tuner bytes: 0x%02x 0x%02x "
"0x%02x 0x%02x\n",buf[0],buf[1],buf[2],buf[3]);
if (i2c_writebytes(state, state->config->pll_address ,buf, 4))
printk(KERN_WARNING "or51132: set_parameters error "
"writing to tuner\n");
dvb_pll_configure(state->config->pll_desc, buf,
param->frequency, 0);
dprintk("set_parameters tuner bytes: 0x%02x 0x%02x "
"0x%02x 0x%02x\n",buf[0],buf[1],buf[2],buf[3]);
if (i2c_writebytes(state, state->config->pll_address ,buf, 4))
printk(KERN_WARNING "or51132: set_parameters error "
"writing to tuner\n");
/* Set to current mode */
or51132_setmode(fe);
/* Set to current mode */
or51132_setmode(fe);
/* Update current frequency */
state->current_frequency = param->frequency;
}
/* Update current frequency */
state->current_frequency = param->frequency;
return 0;
}