V4L/DVB (12292): b2c2: Use dvb-pll for AirStar DVB-T's tuner
The code in samsung_tdtc9251dh0_calc_regs() is equivalent to what dvb-pll's code does. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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d799ce5708
Коммит
6d67c9717b
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@ -449,7 +449,7 @@ static int skystar2_rev28_attach(struct flexcop_device *fc,
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#endif
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/* AirStar DVB-T */
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#if FE_SUPPORTED(MT352)
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#if FE_SUPPORTED(MT352) && FE_SUPPORTED(PLL)
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static int samsung_tdtc9251dh0_demod_init(struct dvb_frontend *fe)
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{
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static u8 mt352_clock_config[] = { 0x89, 0x18, 0x2d };
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@ -467,32 +467,6 @@ static int samsung_tdtc9251dh0_demod_init(struct dvb_frontend *fe)
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return 0;
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}
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static int samsung_tdtc9251dh0_calc_regs(struct dvb_frontend *fe,
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struct dvb_frontend_parameters *params, u8* pllbuf, int buf_len)
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{
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u32 div;
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unsigned char bs = 0;
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if (buf_len < 5)
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return -EINVAL;
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#define IF_FREQUENCYx6 217 /* 6 * 36.16666666667MHz */
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div = (((params->frequency + 83333) * 3) / 500000) + IF_FREQUENCYx6;
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if (params->frequency >= 48000000 && params->frequency <= 154000000) \
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bs = 0x09;
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if (params->frequency >= 161000000 && params->frequency <= 439000000) \
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bs = 0x0a;
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if (params->frequency >= 447000000 && params->frequency <= 863000000) \
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bs = 0x08;
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pllbuf[0] = 0x61;
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pllbuf[1] = div >> 8;
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pllbuf[2] = div & 0xff;
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pllbuf[3] = 0xcc;
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pllbuf[4] = bs;
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return 5;
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}
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static struct mt352_config samsung_tdtc9251dh0_config = {
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.demod_address = 0x0f,
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.demod_init = samsung_tdtc9251dh0_demod_init,
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@ -502,11 +476,11 @@ static int airstar_dvbt_attach(struct flexcop_device *fc,
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struct i2c_adapter *i2c)
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{
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fc->fe = dvb_attach(mt352_attach, &samsung_tdtc9251dh0_config, i2c);
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if (fc->fe != NULL) {
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fc->fe->ops.tuner_ops.calc_regs = samsung_tdtc9251dh0_calc_regs;
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return 1;
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}
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return 0;
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if (!fc->fe)
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return 0;
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return !!dvb_attach(dvb_pll_attach, fc->fe, 0x61, NULL,
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DVB_PLL_SAMSUNG_TDTC9251DH0);
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}
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#else
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#define airstar_dvbt_attach NULL
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