[PATCH] dvb: frontend: stv0297: QAM128 tuning improvement
while investigating the QAM_128-issue with the stv0297-driver for the Cablestar (which is not the same as the one in dvb-kernel CVS, yet), I fixed it, not by increasing the timeout, but by disabling the corner-detection for QAM_128 and higher. This patch has been tested on dvb-kernel cvs, and has been reported to work by multiple users. Some cards still need timeout increase on top of this patch. This will be addressed later. Signed-off-by: Patrick Boettcher <pb@linuxtv.org> 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>
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@ -606,7 +606,13 @@ static int stv0297_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_par
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stv0297_set_inversion(state, inversion);
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/* kick off lock */
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stv0297_writereg_mask(state, 0x88, 0x08, 0x08);
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/* Disable corner detection for higher QAMs */
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if (p->u.qam.modulation == QAM_128 ||
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p->u.qam.modulation == QAM_256)
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stv0297_writereg_mask(state, 0x88, 0x08, 0x00);
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else
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stv0297_writereg_mask(state, 0x88, 0x08, 0x08);
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stv0297_writereg_mask(state, 0x5a, 0x20, 0x00);
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stv0297_writereg_mask(state, 0x6a, 0x01, 0x01);
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stv0297_writereg_mask(state, 0x43, 0x40, 0x40);
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