V4L/DVB (6590): Adding support for VHF with MT2266-devices
MT2266 : - support for VHF - Minor enhancements Signed-off-by: Olivier DANET <odanet@caramail.com> Signed-off-by: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Olivier DANET
Mauro Carvalho Chehab
parent
67053a409a
commit
542794be2c
1 changed files with 131 additions and 67 deletions
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@ -38,8 +38,12 @@ struct mt2266_priv {
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u32 frequency;
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u32 bandwidth;
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u8 band;
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};
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#define MT2266_VHF 1
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#define MT2266_UHF 0
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/* Here, frequencies are expressed in kiloHertz to avoid 32 bits overflows */
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static int debug;
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@ -90,26 +94,30 @@ static int mt2266_writeregs(struct mt2266_priv *priv,u8 *buf, u8 len)
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}
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// Initialisation sequences
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static u8 mt2266_init1[] = {
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REG_TUNE,
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0x00, 0x00, 0x28, 0x00, 0x52, 0x99, 0x3f };
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static u8 mt2266_init1[] = { REG_TUNE, 0x00, 0x00, 0x28,
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0x00, 0x52, 0x99, 0x3f };
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static u8 mt2266_init2[] = {
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0x17, 0x6d, 0x71, 0x61, 0xc0, 0xbf, 0xff, 0xdc, 0x00, 0x0a,
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0xd4, 0x03, 0x64, 0x64, 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x7f, 0x5e, 0x3f, 0xff, 0xff, 0xff, 0x00, 0x77, 0x0f, 0x2d };
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0x17, 0x6d, 0x71, 0x61, 0xc0, 0xbf, 0xff, 0xdc, 0x00, 0x0a, 0xd4,
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0x03, 0x64, 0x64, 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14,
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0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x7f, 0x5e, 0x3f, 0xff, 0xff,
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0xff, 0x00, 0x77, 0x0f, 0x2d
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};
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static u8 mt2266_init_8mhz[] = {
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REG_BANDWIDTH,
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0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 };
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static u8 mt2266_init_8mhz[] = { REG_BANDWIDTH, 0x22, 0x22, 0x22, 0x22,
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0x22, 0x22, 0x22, 0x22 };
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static u8 mt2266_init_7mhz[] = {
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REG_BANDWIDTH,
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0x32, 0x32, 0x32, 0x32, 0x32, 0x32, 0x32, 0x32 };
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static u8 mt2266_init_7mhz[] = { REG_BANDWIDTH, 0x32, 0x32, 0x32, 0x32,
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0x32, 0x32, 0x32, 0x32 };
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static u8 mt2266_init_6mhz[] = {
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REG_BANDWIDTH,
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0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7 };
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static u8 mt2266_init_6mhz[] = { REG_BANDWIDTH, 0xa7, 0xa7, 0xa7, 0xa7,
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0xa7, 0xa7, 0xa7, 0xa7 };
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static u8 mt2266_uhf[] = { 0x1d, 0xdc, 0x00, 0x0a, 0xd4, 0x03, 0x64, 0x64,
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0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14 };
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static u8 mt2266_vhf[] = { 0x1d, 0xfe, 0x00, 0x00, 0xb4, 0x03, 0xa5, 0xa5,
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0xa5, 0xa5, 0x82, 0xaa, 0xf1, 0x17, 0x80, 0x1f };
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#define FREF 30000 // Quartz oscillator 30 MHz
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@ -122,35 +130,78 @@ static int mt2266_set_params(struct dvb_frontend *fe, struct dvb_frontend_parame
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u8 lnaband;
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u8 b[10];
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int i;
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u8 band;
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priv = fe->tuner_priv;
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mt2266_writereg(priv,0x17,0x6d);
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mt2266_writereg(priv,0x1c,0xff);
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freq = params->frequency / 1000; // Hz -> kHz
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if (freq < 470000 && freq > 230000)
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return -EINVAL; /* Gap between VHF and UHF bands */
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priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
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priv->frequency = freq * 1000;
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tune=2 * freq * (8192/16) / (FREF/16);
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if (freq <= 495000) lnaband = 0xEE; else
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if (freq <= 525000) lnaband = 0xDD; else
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if (freq <= 550000) lnaband = 0xCC; else
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if (freq <= 580000) lnaband = 0xBB; else
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if (freq <= 605000) lnaband = 0xAA; else
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if (freq <= 630000) lnaband = 0x99; else
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if (freq <= 655000) lnaband = 0x88; else
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if (freq <= 685000) lnaband = 0x77; else
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if (freq <= 710000) lnaband = 0x66; else
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if (freq <= 735000) lnaband = 0x55; else
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if (freq <= 765000) lnaband = 0x44; else
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if (freq <= 802000) lnaband = 0x33; else
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if (freq <= 840000) lnaband = 0x22; else lnaband = 0x11;
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tune = 2 * freq * (8192/16) / (FREF/16);
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band = (freq < 300000) ? MT2266_VHF : MT2266_UHF;
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if (band == MT2266_VHF)
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tune *= 2;
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msleep(100);
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mt2266_writeregs(priv,(params->u.ofdm.bandwidth==BANDWIDTH_6_MHZ)?mt2266_init_6mhz:
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(params->u.ofdm.bandwidth==BANDWIDTH_7_MHZ)?mt2266_init_7mhz:
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mt2266_init_8mhz,sizeof(mt2266_init_8mhz));
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switch (params->u.ofdm.bandwidth) {
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case BANDWIDTH_6_MHZ:
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mt2266_writeregs(priv, mt2266_init_6mhz,
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sizeof(mt2266_init_6mhz));
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break;
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case BANDWIDTH_7_MHZ:
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mt2266_writeregs(priv, mt2266_init_7mhz,
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sizeof(mt2266_init_7mhz));
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break;
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case BANDWIDTH_8_MHZ:
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default:
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mt2266_writeregs(priv, mt2266_init_8mhz,
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sizeof(mt2266_init_8mhz));
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break;
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}
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if (band == MT2266_VHF && priv->band == MT2266_UHF) {
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dprintk("Switch from UHF to VHF");
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mt2266_writereg(priv, 0x05, 0x04);
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mt2266_writereg(priv, 0x19, 0x61);
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mt2266_writeregs(priv, mt2266_vhf, sizeof(mt2266_vhf));
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} else if (band == MT2266_UHF && priv->band == MT2266_VHF) {
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dprintk("Switch from VHF to UHF");
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mt2266_writereg(priv, 0x05, 0x52);
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mt2266_writereg(priv, 0x19, 0x61);
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mt2266_writeregs(priv, mt2266_uhf, sizeof(mt2266_uhf));
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}
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msleep(10);
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if (freq <= 495000)
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lnaband = 0xEE;
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else if (freq <= 525000)
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lnaband = 0xDD;
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else if (freq <= 550000)
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lnaband = 0xCC;
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else if (freq <= 580000)
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lnaband = 0xBB;
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else if (freq <= 605000)
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lnaband = 0xAA;
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else if (freq <= 630000)
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lnaband = 0x99;
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else if (freq <= 655000)
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lnaband = 0x88;
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else if (freq <= 685000)
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lnaband = 0x77;
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else if (freq <= 710000)
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lnaband = 0x66;
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else if (freq <= 735000)
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lnaband = 0x55;
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else if (freq <= 765000)
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lnaband = 0x44;
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else if (freq <= 802000)
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lnaband = 0x33;
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else if (freq <= 840000)
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lnaband = 0x22;
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else
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lnaband = 0x11;
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b[0] = REG_TUNE;
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b[1] = (tune >> 8) & 0x1F;
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@ -158,47 +209,54 @@ static int mt2266_set_params(struct dvb_frontend *fe, struct dvb_frontend_parame
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b[3] = tune >> 13;
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mt2266_writeregs(priv,b,4);
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dprintk("set_parms: tune=%d band=%d",(int)tune,(int)lnaband);
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dprintk("set_parms: [1..3]: %2x %2x %2x",(int)b[1],(int)b[2],(int)b[3]);
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dprintk("set_parms: tune=%d band=%d %s",
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(int) tune, (int) lnaband,
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(band == MT2266_UHF) ? "UHF" : "VHF");
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dprintk("set_parms: [1..3]: %2x %2x %2x",
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(int) b[1], (int) b[2], (int)b[3]);
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b[0] = 0x05;
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b[1] = 0x62;
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b[2] = lnaband;
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mt2266_writeregs(priv,b,3);
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if (band == MT2266_UHF) {
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b[0] = 0x05;
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b[1] = (priv->band == MT2266_VHF) ? 0x52 : 0x62;
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b[2] = lnaband;
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mt2266_writeregs(priv, b, 3);
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}
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//Waits for pll lock or timeout
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/* Wait for pll lock or timeout */
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i = 0;
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do {
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mt2266_readreg(priv,REG_LOCK,b);
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if ((b[0] & 0x40)==0x40)
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if (b[0] & 0x40)
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break;
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msleep(10);
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i++;
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} while (i<10);
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dprintk("Lock when i=%i",(int)i);
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if (band == MT2266_UHF && priv->band == MT2266_VHF)
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mt2266_writereg(priv, 0x05, 0x62);
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priv->band = band;
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return ret;
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}
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static void mt2266_calibrate(struct mt2266_priv *priv)
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{
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mt2266_writereg(priv,0x11,0x03);
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mt2266_writereg(priv,0x11,0x01);
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mt2266_writeregs(priv,mt2266_init1,sizeof(mt2266_init1));
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mt2266_writeregs(priv,mt2266_init2,sizeof(mt2266_init2));
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mt2266_writereg(priv,0x33,0x5e);
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mt2266_writereg(priv,0x10,0x10);
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mt2266_writereg(priv,0x10,0x00);
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mt2266_writeregs(priv,mt2266_init_8mhz,sizeof(mt2266_init_8mhz));
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mt2266_writereg(priv, 0x11, 0x03);
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mt2266_writereg(priv, 0x11, 0x01);
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mt2266_writeregs(priv, mt2266_init1, sizeof(mt2266_init1));
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mt2266_writeregs(priv, mt2266_init2, sizeof(mt2266_init2));
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mt2266_writereg(priv, 0x33, 0x5e);
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mt2266_writereg(priv, 0x10, 0x10);
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mt2266_writereg(priv, 0x10, 0x00);
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mt2266_writeregs(priv, mt2266_init_8mhz, sizeof(mt2266_init_8mhz));
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msleep(25);
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mt2266_writereg(priv,0x17,0x6d);
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mt2266_writereg(priv,0x1c,0x00);
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mt2266_writereg(priv, 0x17, 0x6d);
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mt2266_writereg(priv, 0x1c, 0x00);
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msleep(75);
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mt2266_writereg(priv,0x17,0x6d);
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mt2266_writereg(priv,0x1c,0xff);
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mt2266_writereg(priv, 0x17, 0x6d);
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mt2266_writereg(priv, 0x1c, 0xff);
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}
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static int mt2266_get_frequency(struct dvb_frontend *fe, u32 *frequency)
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@ -217,17 +275,22 @@ static int mt2266_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
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static int mt2266_init(struct dvb_frontend *fe)
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{
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int ret;
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struct mt2266_priv *priv = fe->tuner_priv;
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mt2266_writereg(priv,0x17,0x6d);
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mt2266_writereg(priv,0x1c,0xff);
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ret = mt2266_writereg(priv, 0x17, 0x6d);
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if (ret < 0)
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return ret;
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ret = mt2266_writereg(priv, 0x1c, 0xff);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int mt2266_sleep(struct dvb_frontend *fe)
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{
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struct mt2266_priv *priv = fe->tuner_priv;
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mt2266_writereg(priv,0x17,0x6d);
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mt2266_writereg(priv,0x1c,0x00);
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mt2266_writereg(priv, 0x17, 0x6d);
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mt2266_writereg(priv, 0x1c, 0x00);
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return 0;
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}
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@ -241,8 +304,8 @@ static int mt2266_release(struct dvb_frontend *fe)
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static const struct dvb_tuner_ops mt2266_tuner_ops = {
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.info = {
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.name = "Microtune MT2266",
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.frequency_min = 470000000,
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.frequency_max = 860000000,
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.frequency_min = 174000000,
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.frequency_max = 862000000,
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.frequency_step = 50000,
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},
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.release = mt2266_release,
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@ -264,8 +327,9 @@ struct dvb_frontend * mt2266_attach(struct dvb_frontend *fe, struct i2c_adapter
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priv->cfg = cfg;
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priv->i2c = i2c;
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priv->band = MT2266_UHF;
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if (mt2266_readreg(priv,0,&id) != 0) {
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if (mt2266_readreg(priv, 0, &id)) {
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kfree(priv);
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return NULL;
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}
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