diff options
Diffstat (limited to 'linux/drivers/media/dvb/frontends/mt2060.c')
-rw-r--r-- | linux/drivers/media/dvb/frontends/mt2060.c | 58 |
1 files changed, 40 insertions, 18 deletions
diff --git a/linux/drivers/media/dvb/frontends/mt2060.c b/linux/drivers/media/dvb/frontends/mt2060.c index 728bc2cd5..aa92c1c51 100644 --- a/linux/drivers/media/dvb/frontends/mt2060.c +++ b/linux/drivers/media/dvb/frontends/mt2060.c @@ -81,31 +81,29 @@ static int mt2060_writeregs(struct mt2060_state *state,u8 *buf, u8 len) return 0; } -// Initialization : VGAG=01, V1CSE=1 +// Initialisation sequences +// LNABAND=3, NUM1=0x3C, DIV1=0x74, NUM2=0x1080, DIV2=0x49 static u8 mt2060_config1[] = { - REG_VGAG, - 0x31, 0xff + REG_LO1C1, + 0x3F, 0x74, 0x00, 0x08, 0x93 }; -// Initialization : FMCG=2, GP2=0, GP1=0 +// FMCG=2, GP2=0, GP1=0 static u8 mt2060_config2[] = { REG_MISC_CTRL, - 0x20 + 0x20, 0x1E, 0x30, 0xff, 0x80, 0xff, 0x00, 0x2c, 0x42 }; -// The power-up values are : -// LNABAND=3, NUM1=0x3C, DIV1=0x74, NUM2=0x1080, DIV2=0x49 --> LO1=1.871GHz LO2=1.176250GHz +// VGAG=3, V1CSE=1 static u8 mt2060_config3[] = { - REG_LO1C1, - 0x3F, 0x74, 0x00, 0x08, 0x93 + REG_VGAG, + 0x33 }; int mt2060_init(struct mt2060_state *state) { if (mt2060_writeregs(state,mt2060_config1,sizeof(mt2060_config1))) return -EREMOTEIO; - if (mt2060_writeregs(state,mt2060_config2,sizeof(mt2060_config2))) - return -EREMOTEIO; if (mt2060_writeregs(state,mt2060_config3,sizeof(mt2060_config3))) return -EREMOTEIO; return 0; @@ -166,22 +164,28 @@ static int mt2060_spurcheck(u32 lo1,u32 lo2,u32 if2) } #endif -#define IF1 (1220*1000) // IF1 frequency = 1.220 GHz #define IF2 36150 // IF2 frequency = 36.150 MHz #define FREF 16000 // Quartz oscillator 16 MHz int mt2060_set(struct mt2060_state *state, struct dvb_frontend_parameters *fep) { int ret=0; + int i=0; u32 freq; u8 lnaband; u32 f_lo1,f_lo2; u32 div1,num1,div2,num2; u8 b[8]; + u32 if1; + + if1 = state->if1_freq; + b[0] = REG_LO1B1; + b[1] = 0xFF; + mt2060_writeregs(state,b,2); freq = fep->frequency / 1000; // Hz -> kHz - f_lo1 = freq + IF1; + f_lo1 = freq + if1 * 1000; f_lo1 = (f_lo1/250)*250; f_lo2 = f_lo1 - freq - IF2; f_lo2 = (f_lo2/50)*50; @@ -218,11 +222,22 @@ int mt2060_set(struct mt2060_state *state, struct dvb_frontend_parameters *fep) b[4] = num2 >> 4; b[5] = ((num2 >>12) & 1) | (div2 << 1); + dprintk("IF1: %dMHz",(int)if1); dprintk("PLL freq: %d f_lo1: %d f_lo2: %d (kHz)",(int)freq,(int)f_lo1,(int)f_lo2); dprintk("PLL div1: %d num1: %d div2: %d num2: %d",(int)div1,(int)num1,(int)div2,(int)num2); dprintk("PLL [1..5]: %2x %2x %2x %2x %2x",(int)b[1],(int)b[2],(int)b[3],(int)b[4],(int)b[5]); mt2060_writeregs(state,b,6); + + //Waits for pll lock or timeout + i=0; + do { + mt2060_readreg(state,REG_LO_STATUS,b); + if ((b[0] & 0x88)==0x88) break; + msleep(4); + i++; + } while (i<10); + return ret; } EXPORT_SYMBOL(mt2060_set); @@ -232,28 +247,34 @@ static void mt2060_calibrate(struct mt2060_state *state) { u8 b = 0; int i = 0; + + if (mt2060_writeregs(state,mt2060_config1,sizeof(mt2060_config1))) + return; + if (mt2060_writeregs(state,mt2060_config2,sizeof(mt2060_config2))) + return; + do { b |= (1 << 6); // FM1SS; mt2060_writereg(state, REG_LO2C1,b); - msleep(25); + msleep(20); if (i == 0) { b |= (1 << 7); // FM1CA; mt2060_writereg(state, REG_LO2C1,b); b &= ~(1 << 7); // FM1CA; - msleep(25); + msleep(20); } b &= ~(1 << 6); // FM1SS mt2060_writereg(state, REG_LO2C1,b); - msleep(25); + msleep(20); i++; } while (i < 9); i = 0; while (i++ < 10 && mt2060_readreg(state, REG_MISC_STAT, &b) == 0 && (b & (1 << 6)) == 0) - msleep(25); + msleep(20); if (i < 10) { mt2060_readreg(state, REG_FM_FREQ, &state->fmfreq); // now find out, what is fmreq used for :) @@ -263,13 +284,14 @@ static void mt2060_calibrate(struct mt2060_state *state) } /* This functions tries to identify a MT2060 tuner by reading the PART/REV register. This is hasty. */ -int mt2060_attach(struct mt2060_state *state, struct mt2060_config *config, struct i2c_adapter *i2c) +int mt2060_attach(struct mt2060_state *state, struct mt2060_config *config, struct i2c_adapter *i2c,u16 if1) { u8 id = 0; memset(state,0,sizeof(struct mt2060_state)); state->config = config; state->i2c = i2c; + state->if1_freq = if1; if (mt2060_readreg(state,REG_PART_REV,&id) != 0) return -ENODEV; |