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[PATCH] dvb: LGDT3302 QAM lock bug fix

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Fix QAM lock bug.  Previously, it was necessary to first scan in VSB before
attempting to get a QAM lock.

Signed-off-by: Mac Michaels <wmichaels1@earthlink.net>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Michael Krufky 2005-07-14 00:33:33 -07:00 committed by Linus Torvalds
parent 514fd7fd01
commit 3952db66ef
1 changed files with 3 additions and 13 deletions
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16
drivers/media/dvb/frontends/lgdt3302.c
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@ -217,13 +217,11 @@ static int lgdt3302_set_parameters(struct dvb_frontend* fe,
static u8 demux_ctrl_cfg[] = { DEMUX_CONTROL, 0xfb };
static u8 agc_rf_cfg[] = { AGC_RF_BANDWIDTH0, 0x40, 0x93, 0x00 };
static u8 agc_ctrl_cfg[] = { AGC_FUNC_CTRL2, 0xc6, 0x40 };
static u8 agc_delay_cfg[] = { AGC_DELAY0, 0x00, 0x00, 0x00 };
static u8 agc_delay_cfg[] = { AGC_DELAY0, 0x07, 0x00, 0xfe };
static u8 agc_loop_cfg[] = { AGC_LOOP_BANDWIDTH0, 0x08, 0x9a };
/* Change only if we are actually changing the modulation */
if (state->current_modulation != param->u.vsb.modulation) {
int value;
switch(param->u.vsb.modulation) {
case VSB_8:
dprintk("%s: VSB_8 MODE\n", __FUNCTION__);
@ -276,16 +274,8 @@ static int lgdt3302_set_parameters(struct dvb_frontend* fe,
recovery center frequency register */
i2c_writebytes(state, state->config->demod_address,
vsb_freq_cfg, sizeof(vsb_freq_cfg));
/* Set the value of 'INLVTHD' register 0x2a/0x2c
to value from 'IFACC' register 0x39/0x3b -1 */
i2c_selectreadbytes(state, AGC_RFIF_ACC0,
&agc_delay_cfg[1], 3);
value = ((agc_delay_cfg[1] & 0x0f) << 8) | agc_delay_cfg[3];
value = value -1;
dprintk("%s IFACC -1 = 0x%03x\n", __FUNCTION__, value);
agc_delay_cfg[1] = (value >> 8) & 0x0f;
agc_delay_cfg[2] = 0x00;
agc_delay_cfg[3] = value & 0xff;
/* Set the value of 'INLVTHD' register 0x2a/0x2c to 0x7fe */
i2c_writebytes(state, state->config->demod_address,
agc_delay_cfg, sizeof(agc_delay_cfg));