diff options
Diffstat (limited to 'drivers/media/dvb/frontends/mt312.c')
| -rw-r--r-- | drivers/media/dvb/frontends/mt312.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/drivers/media/dvb/frontends/mt312.c b/drivers/media/dvb/frontends/mt312.c index 32b41947788..1f478c8c0d4 100644 --- a/drivers/media/dvb/frontends/mt312.c +++ b/drivers/media/dvb/frontends/mt312.c @@ -43,7 +43,8 @@ struct mt312_state { struct dvb_frontend frontend; u8 id; - u8 frequency; + unsigned long xtal; + u8 freq_mult; }; static int debug; @@ -53,8 +54,6 @@ static int debug; printk(KERN_DEBUG "mt312: " args); \ } while (0) -#define MT312_SYS_CLK 90000000UL /* 90 MHz */ -#define MT312_LPOWER_SYS_CLK 60000000UL /* 60 MHz */ #define MT312_PLL_CLK 10000000UL /* 10 MHz */ static int mt312_read(struct mt312_state *state, const enum mt312_reg_addr reg, @@ -209,7 +208,7 @@ static int mt312_get_symbol_rate(struct mt312_state *state, u32 *sr) dprintk("sym_rat_op=%d dec_ratio=%d\n", sym_rat_op, dec_ratio); dprintk("*sr(manual) = %lu\n", - (((MT312_PLL_CLK * 8192) / (sym_rat_op + 8192)) * + (((state->xtal * 8192) / (sym_rat_op + 8192)) * 2) - dec_ratio); } @@ -242,7 +241,7 @@ static int mt312_initfe(struct dvb_frontend *fe) /* wake up */ ret = mt312_writereg(state, CONFIG, - (state->frequency == 60 ? 0x88 : 0x8c)); + (state->freq_mult == 6 ? 0x88 : 0x8c)); if (ret < 0) return ret; @@ -266,11 +265,10 @@ static int mt312_initfe(struct dvb_frontend *fe) } /* SYS_CLK */ - buf[0] = mt312_div((state->frequency == 60 ? MT312_LPOWER_SYS_CLK : - MT312_SYS_CLK) * 2, 1000000); + buf[0] = mt312_div(state->xtal * state->freq_mult * 2, 1000000); /* DISEQC_RATIO */ - buf[1] = mt312_div(MT312_PLL_CLK, 22000 * 4); + buf[1] = mt312_div(state->xtal, 22000 * 4); ret = mt312_write(state, SYS_CLK, buf, sizeof(buf)); if (ret < 0) @@ -535,17 +533,17 @@ static int mt312_set_frontend(struct dvb_frontend *fe, return ret; if (p->u.qpsk.symbol_rate >= 30000000) { /* Note that 30MS/s should use 90MHz */ - if ((config_val & 0x0c) == 0x08) { + if (state->freq_mult == 6) { /* We are running 60MHz */ - state->frequency = 90; + state->freq_mult = 9; ret = mt312_initfe(fe); if (ret < 0) return ret; } } else { - if ((config_val & 0x0c) == 0x0C) { + if (state->freq_mult == 9) { /* We are running 90MHz */ - state->frequency = 60; + state->freq_mult = 6; ret = mt312_initfe(fe); if (ret < 0) return ret; @@ -664,6 +662,7 @@ static void mt312_release(struct dvb_frontend *fe) kfree(state); } +#define MT312_SYS_CLK 90000000UL /* 90 MHz */ static struct dvb_frontend_ops vp310_mt312_ops = { .info = { @@ -671,8 +670,8 @@ static struct dvb_frontend_ops vp310_mt312_ops = { .type = FE_QPSK, .frequency_min = 950000, .frequency_max = 2150000, - .frequency_stepsize = (MT312_PLL_CLK / 1000) / 128, - .symbol_rate_min = MT312_SYS_CLK / 128, + .frequency_stepsize = (MT312_PLL_CLK / 1000) / 128, /* FIXME: adjust freq to real used xtal */ + .symbol_rate_min = MT312_SYS_CLK / 128, /* FIXME as above */ .symbol_rate_max = MT312_SYS_CLK / 2, .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | @@ -729,11 +728,13 @@ struct dvb_frontend *vp310_mt312_attach(const struct mt312_config *config, switch (state->id) { case ID_VP310: strcpy(state->frontend.ops.info.name, "Zarlink VP310 DVB-S"); - state->frequency = 90; + state->xtal = MT312_PLL_CLK; + state->freq_mult = 9; break; case ID_MT312: strcpy(state->frontend.ops.info.name, "Zarlink MT312 DVB-S"); - state->frequency = 60; + state->xtal = MT312_PLL_CLK; + state->freq_mult = 6; break; default: printk(KERN_WARNING "Only Zarlink VP310/MT312" |