diff options
Diffstat (limited to 'drivers/media/dvb/frontends/mt2266.c')
| -rw-r--r-- | drivers/media/dvb/frontends/mt2266.c | 204 |
1 files changed, 134 insertions, 70 deletions
diff --git a/drivers/media/dvb/frontends/mt2266.c b/drivers/media/dvb/frontends/mt2266.c index 03fe8265745f..54b18f94b14b 100644 --- a/drivers/media/dvb/frontends/mt2266.c +++ b/drivers/media/dvb/frontends/mt2266.c @@ -38,8 +38,12 @@ struct mt2266_priv { u32 frequency; u32 bandwidth; + u8 band; }; +#define MT2266_VHF 1 +#define MT2266_UHF 0 + /* Here, frequencies are expressed in kiloHertz to avoid 32 bits overflows */ static int debug; @@ -90,26 +94,30 @@ static int mt2266_writeregs(struct mt2266_priv *priv,u8 *buf, u8 len) } // Initialisation sequences -static u8 mt2266_init1[] = { - REG_TUNE, - 0x00, 0x00, 0x28, 0x00, 0x52, 0x99, 0x3f }; +static u8 mt2266_init1[] = { REG_TUNE, 0x00, 0x00, 0x28, + 0x00, 0x52, 0x99, 0x3f }; static u8 mt2266_init2[] = { - 0x17, 0x6d, 0x71, 0x61, 0xc0, 0xbf, 0xff, 0xdc, 0x00, 0x0a, - 0xd4, 0x03, 0x64, 0x64, 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14, 0x01, 0x01, 0x01, 0x01, - 0x01, 0x01, 0x7f, 0x5e, 0x3f, 0xff, 0xff, 0xff, 0x00, 0x77, 0x0f, 0x2d }; + 0x17, 0x6d, 0x71, 0x61, 0xc0, 0xbf, 0xff, 0xdc, 0x00, 0x0a, 0xd4, + 0x03, 0x64, 0x64, 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14, + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x7f, 0x5e, 0x3f, 0xff, 0xff, + 0xff, 0x00, 0x77, 0x0f, 0x2d +}; + +static u8 mt2266_init_8mhz[] = { REG_BANDWIDTH, 0x22, 0x22, 0x22, 0x22, + 0x22, 0x22, 0x22, 0x22 }; -static u8 mt2266_init_8mhz[] = { - REG_BANDWIDTH, - 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 }; +static u8 mt2266_init_7mhz[] = { REG_BANDWIDTH, 0x32, 0x32, 0x32, 0x32, + 0x32, 0x32, 0x32, 0x32 }; -static u8 mt2266_init_7mhz[] = { - REG_BANDWIDTH, - 0x32, 0x32, 0x32, 0x32, 0x32, 0x32, 0x32, 0x32 }; +static u8 mt2266_init_6mhz[] = { REG_BANDWIDTH, 0xa7, 0xa7, 0xa7, 0xa7, + 0xa7, 0xa7, 0xa7, 0xa7 }; -static u8 mt2266_init_6mhz[] = { - REG_BANDWIDTH, - 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7 }; +static u8 mt2266_uhf[] = { 0x1d, 0xdc, 0x00, 0x0a, 0xd4, 0x03, 0x64, 0x64, + 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14 }; + +static u8 mt2266_vhf[] = { 0x1d, 0xfe, 0x00, 0x00, 0xb4, 0x03, 0xa5, 0xa5, + 0xa5, 0xa5, 0x82, 0xaa, 0xf1, 0x17, 0x80, 0x1f }; #define FREF 30000 // Quartz oscillator 30 MHz @@ -122,35 +130,78 @@ static int mt2266_set_params(struct dvb_frontend *fe, struct dvb_frontend_parame u8 lnaband; u8 b[10]; int i; + u8 band; priv = fe->tuner_priv; - mt2266_writereg(priv,0x17,0x6d); - mt2266_writereg(priv,0x1c,0xff); - freq = params->frequency / 1000; // Hz -> kHz + if (freq < 470000 && freq > 230000) + return -EINVAL; /* Gap between VHF and UHF bands */ priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0; priv->frequency = freq * 1000; - tune=2 * freq * (8192/16) / (FREF/16); - - if (freq <= 495000) lnaband = 0xEE; else - if (freq <= 525000) lnaband = 0xDD; else - if (freq <= 550000) lnaband = 0xCC; else - if (freq <= 580000) lnaband = 0xBB; else - if (freq <= 605000) lnaband = 0xAA; else - if (freq <= 630000) lnaband = 0x99; else - if (freq <= 655000) lnaband = 0x88; else - if (freq <= 685000) lnaband = 0x77; else - if (freq <= 710000) lnaband = 0x66; else - if (freq <= 735000) lnaband = 0x55; else - if (freq <= 765000) lnaband = 0x44; else - if (freq <= 802000) lnaband = 0x33; else - if (freq <= 840000) lnaband = 0x22; else lnaband = 0x11; - - msleep(100); - mt2266_writeregs(priv,(params->u.ofdm.bandwidth==BANDWIDTH_6_MHZ)?mt2266_init_6mhz: - (params->u.ofdm.bandwidth==BANDWIDTH_7_MHZ)?mt2266_init_7mhz: - mt2266_init_8mhz,sizeof(mt2266_init_8mhz)); + + tune = 2 * freq * (8192/16) / (FREF/16); + band = (freq < 300000) ? MT2266_VHF : MT2266_UHF; + if (band == MT2266_VHF) + tune *= 2; + + switch (params->u.ofdm.bandwidth) { + case BANDWIDTH_6_MHZ: + mt2266_writeregs(priv, mt2266_init_6mhz, + sizeof(mt2266_init_6mhz)); + break; + case BANDWIDTH_7_MHZ: + mt2266_writeregs(priv, mt2266_init_7mhz, + sizeof(mt2266_init_7mhz)); + break; + case BANDWIDTH_8_MHZ: + default: + mt2266_writeregs(priv, mt2266_init_8mhz, + sizeof(mt2266_init_8mhz)); + break; + } + + if (band == MT2266_VHF && priv->band == MT2266_UHF) { + dprintk("Switch from UHF to VHF"); + mt2266_writereg(priv, 0x05, 0x04); + mt2266_writereg(priv, 0x19, 0x61); + mt2266_writeregs(priv, mt2266_vhf, sizeof(mt2266_vhf)); + } else if (band == MT2266_UHF && priv->band == MT2266_VHF) { + dprintk("Switch from VHF to UHF"); + mt2266_writereg(priv, 0x05, 0x52); + mt2266_writereg(priv, 0x19, 0x61); + mt2266_writeregs(priv, mt2266_uhf, sizeof(mt2266_uhf)); + } + msleep(10); + + if (freq <= 495000) + lnaband = 0xEE; + else if (freq <= 525000) + lnaband = 0xDD; + else if (freq <= 550000) + lnaband = 0xCC; + else if (freq <= 580000) + lnaband = 0xBB; + else if (freq <= 605000) + lnaband = 0xAA; + else if (freq <= 630000) + lnaband = 0x99; + else if (freq <= 655000) + lnaband = 0x88; + else if (freq <= 685000) + lnaband = 0x77; + else if (freq <= 710000) + lnaband = 0x66; + else if (freq <= 735000) + lnaband = 0x55; + else if (freq <= 765000) + lnaband = 0x44; + else if (freq <= 802000) + lnaband = 0x33; + else if (freq <= 840000) + lnaband = 0x22; + else + lnaband = 0x11; b[0] = REG_TUNE; b[1] = (tune >> 8) & 0x1F; @@ -158,47 +209,54 @@ static int mt2266_set_params(struct dvb_frontend *fe, struct dvb_frontend_parame b[3] = tune >> 13; mt2266_writeregs(priv,b,4); - dprintk("set_parms: tune=%d band=%d",(int)tune,(int)lnaband); - dprintk("set_parms: [1..3]: %2x %2x %2x",(int)b[1],(int)b[2],(int)b[3]); - - b[0] = 0x05; - b[1] = 0x62; - b[2] = lnaband; - mt2266_writeregs(priv,b,3); + dprintk("set_parms: tune=%d band=%d %s", + (int) tune, (int) lnaband, + (band == MT2266_UHF) ? "UHF" : "VHF"); + dprintk("set_parms: [1..3]: %2x %2x %2x", + (int) b[1], (int) b[2], (int)b[3]); + + if (band == MT2266_UHF) { + b[0] = 0x05; + b[1] = (priv->band == MT2266_VHF) ? 0x52 : 0x62; + b[2] = lnaband; + mt2266_writeregs(priv, b, 3); + } - //Waits for pll lock or timeout + /* Wait for pll lock or timeout */ i = 0; do { mt2266_readreg(priv,REG_LOCK,b); - if ((b[0] & 0x40)==0x40) + if (b[0] & 0x40) break; msleep(10); i++; } while (i<10); dprintk("Lock when i=%i",(int)i); + + if (band == MT2266_UHF && priv->band == MT2266_VHF) + mt2266_writereg(priv, 0x05, 0x62); + + priv->band = band; + return ret; } static void mt2266_calibrate(struct mt2266_priv *priv) { - mt2266_writereg(priv,0x11,0x03); - mt2266_writereg(priv,0x11,0x01); - - mt2266_writeregs(priv,mt2266_init1,sizeof(mt2266_init1)); - mt2266_writeregs(priv,mt2266_init2,sizeof(mt2266_init2)); - - mt2266_writereg(priv,0x33,0x5e); - mt2266_writereg(priv,0x10,0x10); - mt2266_writereg(priv,0x10,0x00); - - mt2266_writeregs(priv,mt2266_init_8mhz,sizeof(mt2266_init_8mhz)); - + mt2266_writereg(priv, 0x11, 0x03); + mt2266_writereg(priv, 0x11, 0x01); + mt2266_writeregs(priv, mt2266_init1, sizeof(mt2266_init1)); + mt2266_writeregs(priv, mt2266_init2, sizeof(mt2266_init2)); + mt2266_writereg(priv, 0x33, 0x5e); + mt2266_writereg(priv, 0x10, 0x10); + mt2266_writereg(priv, 0x10, 0x00); + mt2266_writeregs(priv, mt2266_init_8mhz, sizeof(mt2266_init_8mhz)); msleep(25); - mt2266_writereg(priv,0x17,0x6d); - mt2266_writereg(priv,0x1c,0x00); + mt2266_writereg(priv, 0x17, 0x6d); + mt2266_writereg(priv, 0x1c, 0x00); msleep(75); - mt2266_writereg(priv,0x17,0x6d); - mt2266_writereg(priv,0x1c,0xff); + mt2266_writereg(priv, 0x17, 0x6d); + mt2266_writereg(priv, 0x1c, 0xff); } static int mt2266_get_frequency(struct dvb_frontend *fe, u32 *frequency) @@ -217,17 +275,22 @@ static int mt2266_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) static int mt2266_init(struct dvb_frontend *fe) { + int ret; struct mt2266_priv *priv = fe->tuner_priv; - mt2266_writereg(priv,0x17,0x6d); - mt2266_writereg(priv,0x1c,0xff); + ret = mt2266_writereg(priv, 0x17, 0x6d); + if (ret < 0) + return ret; + ret = mt2266_writereg(priv, 0x1c, 0xff); + if (ret < 0) + return ret; return 0; } static int mt2266_sleep(struct dvb_frontend *fe) { struct mt2266_priv *priv = fe->tuner_priv; - mt2266_writereg(priv,0x17,0x6d); - mt2266_writereg(priv,0x1c,0x00); + mt2266_writereg(priv, 0x17, 0x6d); + mt2266_writereg(priv, 0x1c, 0x00); return 0; } @@ -241,8 +304,8 @@ static int mt2266_release(struct dvb_frontend *fe) static const struct dvb_tuner_ops mt2266_tuner_ops = { .info = { .name = "Microtune MT2266", - .frequency_min = 470000000, - .frequency_max = 860000000, + .frequency_min = 174000000, + .frequency_max = 862000000, .frequency_step = 50000, }, .release = mt2266_release, @@ -264,8 +327,9 @@ struct dvb_frontend * mt2266_attach(struct dvb_frontend *fe, struct i2c_adapter priv->cfg = cfg; priv->i2c = i2c; + priv->band = MT2266_UHF; - if (mt2266_readreg(priv,0,&id) != 0) { + if (mt2266_readreg(priv, 0, &id)) { kfree(priv); return NULL; } |