diff options
Diffstat (limited to 'drivers/media/dvb-frontends/stv0910.c')
| -rw-r--r-- | drivers/media/dvb-frontends/stv0910.c | 1834 |
1 files changed, 1834 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/stv0910.c b/drivers/media/dvb-frontends/stv0910.c new file mode 100644 index 000000000..e517ff757 --- /dev/null +++ b/drivers/media/dvb-frontends/stv0910.c @@ -0,0 +1,1834 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for the ST STV0910 DVB-S/S2 demodulator. + * + * Copyright (C) 2014-2015 Ralph Metzler <rjkm@metzlerbros.de> + * Marcus Metzler <mocm@metzlerbros.de> + * developed for Digital Devices GmbH + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/firmware.h> +#include <linux/i2c.h> +#include <asm/div64.h> + +#include <media/dvb_frontend.h> +#include "stv0910.h" +#include "stv0910_regs.h" + +#define EXT_CLOCK 30000000 +#define TUNING_DELAY 200 +#define BER_SRC_S 0x20 +#define BER_SRC_S2 0x20 + +static LIST_HEAD(stvlist); + +enum receive_mode { RCVMODE_NONE, RCVMODE_DVBS, RCVMODE_DVBS2, RCVMODE_AUTO }; + +enum dvbs2_fectype { DVBS2_64K, DVBS2_16K }; + +enum dvbs2_mod_cod { + DVBS2_DUMMY_PLF, DVBS2_QPSK_1_4, DVBS2_QPSK_1_3, DVBS2_QPSK_2_5, + DVBS2_QPSK_1_2, DVBS2_QPSK_3_5, DVBS2_QPSK_2_3, DVBS2_QPSK_3_4, + DVBS2_QPSK_4_5, DVBS2_QPSK_5_6, DVBS2_QPSK_8_9, DVBS2_QPSK_9_10, + DVBS2_8PSK_3_5, DVBS2_8PSK_2_3, DVBS2_8PSK_3_4, DVBS2_8PSK_5_6, + DVBS2_8PSK_8_9, DVBS2_8PSK_9_10, DVBS2_16APSK_2_3, DVBS2_16APSK_3_4, + DVBS2_16APSK_4_5, DVBS2_16APSK_5_6, DVBS2_16APSK_8_9, DVBS2_16APSK_9_10, + DVBS2_32APSK_3_4, DVBS2_32APSK_4_5, DVBS2_32APSK_5_6, DVBS2_32APSK_8_9, + DVBS2_32APSK_9_10 +}; + +enum fe_stv0910_mod_cod { + FE_DUMMY_PLF, FE_QPSK_14, FE_QPSK_13, FE_QPSK_25, + FE_QPSK_12, FE_QPSK_35, FE_QPSK_23, FE_QPSK_34, + FE_QPSK_45, FE_QPSK_56, FE_QPSK_89, FE_QPSK_910, + FE_8PSK_35, FE_8PSK_23, FE_8PSK_34, FE_8PSK_56, + FE_8PSK_89, FE_8PSK_910, FE_16APSK_23, FE_16APSK_34, + FE_16APSK_45, FE_16APSK_56, FE_16APSK_89, FE_16APSK_910, + FE_32APSK_34, FE_32APSK_45, FE_32APSK_56, FE_32APSK_89, + FE_32APSK_910 +}; + +enum fe_stv0910_roll_off { FE_SAT_35, FE_SAT_25, FE_SAT_20, FE_SAT_15 }; + +static inline u32 muldiv32(u32 a, u32 b, u32 c) +{ + u64 tmp64; + + tmp64 = (u64)a * (u64)b; + do_div(tmp64, c); + + return (u32)tmp64; +} + +struct stv_base { + struct list_head stvlist; + + u8 adr; + struct i2c_adapter *i2c; + struct mutex i2c_lock; /* shared I2C access protect */ + struct mutex reg_lock; /* shared register write protect */ + int count; + + u32 extclk; + u32 mclk; +}; + +struct stv { + struct stv_base *base; + struct dvb_frontend fe; + int nr; + u16 regoff; + u8 i2crpt; + u8 tscfgh; + u8 tsgeneral; + u8 tsspeed; + u8 single; + unsigned long tune_time; + + s32 search_range; + u32 started; + u32 demod_lock_time; + enum receive_mode receive_mode; + u32 demod_timeout; + u32 fec_timeout; + u32 first_time_lock; + u8 demod_bits; + u32 symbol_rate; + + u8 last_viterbi_rate; + enum fe_code_rate puncture_rate; + enum fe_stv0910_mod_cod mod_cod; + enum dvbs2_fectype fectype; + u32 pilots; + enum fe_stv0910_roll_off feroll_off; + + int is_standard_broadcast; + int is_vcm; + + u32 cur_scrambling_code; + + u32 last_bernumerator; + u32 last_berdenominator; + u8 berscale; + + u8 vth[6]; +}; + +struct sinit_table { + u16 address; + u8 data; +}; + +struct slookup { + s16 value; + u32 reg_value; +}; + +static int write_reg(struct stv *state, u16 reg, u8 val) +{ + struct i2c_adapter *adap = state->base->i2c; + u8 data[3] = {reg >> 8, reg & 0xff, val}; + struct i2c_msg msg = {.addr = state->base->adr, .flags = 0, + .buf = data, .len = 3}; + + if (i2c_transfer(adap, &msg, 1) != 1) { + dev_warn(&adap->dev, "i2c write error ([%02x] %04x: %02x)\n", + state->base->adr, reg, val); + return -EIO; + } + return 0; +} + +static inline int i2c_read_regs16(struct i2c_adapter *adapter, u8 adr, + u16 reg, u8 *val, int count) +{ + u8 msg[2] = {reg >> 8, reg & 0xff}; + struct i2c_msg msgs[2] = {{.addr = adr, .flags = 0, + .buf = msg, .len = 2}, + {.addr = adr, .flags = I2C_M_RD, + .buf = val, .len = count } }; + + if (i2c_transfer(adapter, msgs, 2) != 2) { + dev_warn(&adapter->dev, "i2c read error ([%02x] %04x)\n", + adr, reg); + return -EIO; + } + return 0; +} + +static int read_reg(struct stv *state, u16 reg, u8 *val) +{ + return i2c_read_regs16(state->base->i2c, state->base->adr, + reg, val, 1); +} + +static int read_regs(struct stv *state, u16 reg, u8 *val, int len) +{ + return i2c_read_regs16(state->base->i2c, state->base->adr, + reg, val, len); +} + +static int write_shared_reg(struct stv *state, u16 reg, u8 mask, u8 val) +{ + int status; + u8 tmp; + + mutex_lock(&state->base->reg_lock); + status = read_reg(state, reg, &tmp); + if (!status) + status = write_reg(state, reg, (tmp & ~mask) | (val & mask)); + mutex_unlock(&state->base->reg_lock); + return status; +} + +static int write_field(struct stv *state, u32 field, u8 val) +{ + int status; + u8 shift, mask, old, new; + + status = read_reg(state, field >> 16, &old); + if (status) + return status; + mask = field & 0xff; + shift = (field >> 12) & 0xf; + new = ((val << shift) & mask) | (old & ~mask); + if (new == old) + return 0; + return write_reg(state, field >> 16, new); +} + +#define SET_FIELD(_reg, _val) \ + write_field(state, state->nr ? FSTV0910_P2_##_reg : \ + FSTV0910_P1_##_reg, _val) + +#define SET_REG(_reg, _val) \ + write_reg(state, state->nr ? RSTV0910_P2_##_reg : \ + RSTV0910_P1_##_reg, _val) + +#define GET_REG(_reg, _val) \ + read_reg(state, state->nr ? RSTV0910_P2_##_reg : \ + RSTV0910_P1_##_reg, _val) + +static const struct slookup s1_sn_lookup[] = { + { 0, 9242 }, /* C/N= 0dB */ + { 5, 9105 }, /* C/N= 0.5dB */ + { 10, 8950 }, /* C/N= 1.0dB */ + { 15, 8780 }, /* C/N= 1.5dB */ + { 20, 8566 }, /* C/N= 2.0dB */ + { 25, 8366 }, /* C/N= 2.5dB */ + { 30, 8146 }, /* C/N= 3.0dB */ + { 35, 7908 }, /* C/N= 3.5dB */ + { 40, 7666 }, /* C/N= 4.0dB */ + { 45, 7405 }, /* C/N= 4.5dB */ + { 50, 7136 }, /* C/N= 5.0dB */ + { 55, 6861 }, /* C/N= 5.5dB */ + { 60, 6576 }, /* C/N= 6.0dB */ + { 65, 6330 }, /* C/N= 6.5dB */ + { 70, 6048 }, /* C/N= 7.0dB */ + { 75, 5768 }, /* C/N= 7.5dB */ + { 80, 5492 }, /* C/N= 8.0dB */ + { 85, 5224 }, /* C/N= 8.5dB */ + { 90, 4959 }, /* C/N= 9.0dB */ + { 95, 4709 }, /* C/N= 9.5dB */ + { 100, 4467 }, /* C/N=10.0dB */ + { 105, 4236 }, /* C/N=10.5dB */ + { 110, 4013 }, /* C/N=11.0dB */ + { 115, 3800 }, /* C/N=11.5dB */ + { 120, 3598 }, /* C/N=12.0dB */ + { 125, 3406 }, /* C/N=12.5dB */ + { 130, 3225 }, /* C/N=13.0dB */ + { 135, 3052 }, /* C/N=13.5dB */ + { 140, 2889 }, /* C/N=14.0dB */ + { 145, 2733 }, /* C/N=14.5dB */ + { 150, 2587 }, /* C/N=15.0dB */ + { 160, 2318 }, /* C/N=16.0dB */ + { 170, 2077 }, /* C/N=17.0dB */ + { 180, 1862 }, /* C/N=18.0dB */ + { 190, 1670 }, /* C/N=19.0dB */ + { 200, 1499 }, /* C/N=20.0dB */ + { 210, 1347 }, /* C/N=21.0dB */ + { 220, 1213 }, /* C/N=22.0dB */ + { 230, 1095 }, /* C/N=23.0dB */ + { 240, 992 }, /* C/N=24.0dB */ + { 250, 900 }, /* C/N=25.0dB */ + { 260, 826 }, /* C/N=26.0dB */ + { 270, 758 }, /* C/N=27.0dB */ + { 280, 702 }, /* C/N=28.0dB */ + { 290, 653 }, /* C/N=29.0dB */ + { 300, 613 }, /* C/N=30.0dB */ + { 310, 579 }, /* C/N=31.0dB */ + { 320, 550 }, /* C/N=32.0dB */ + { 330, 526 }, /* C/N=33.0dB */ + { 350, 490 }, /* C/N=33.0dB */ + { 400, 445 }, /* C/N=40.0dB */ + { 450, 430 }, /* C/N=45.0dB */ + { 500, 426 }, /* C/N=50.0dB */ + { 510, 425 } /* C/N=51.0dB */ +}; + +static const struct slookup s2_sn_lookup[] = { + { -30, 13950 }, /* C/N=-2.5dB */ + { -25, 13580 }, /* C/N=-2.5dB */ + { -20, 13150 }, /* C/N=-2.0dB */ + { -15, 12760 }, /* C/N=-1.5dB */ + { -10, 12345 }, /* C/N=-1.0dB */ + { -5, 11900 }, /* C/N=-0.5dB */ + { 0, 11520 }, /* C/N= 0dB */ + { 5, 11080 }, /* C/N= 0.5dB */ + { 10, 10630 }, /* C/N= 1.0dB */ + { 15, 10210 }, /* C/N= 1.5dB */ + { 20, 9790 }, /* C/N= 2.0dB */ + { 25, 9390 }, /* C/N= 2.5dB */ + { 30, 8970 }, /* C/N= 3.0dB */ + { 35, 8575 }, /* C/N= 3.5dB */ + { 40, 8180 }, /* C/N= 4.0dB */ + { 45, 7800 }, /* C/N= 4.5dB */ + { 50, 7430 }, /* C/N= 5.0dB */ + { 55, 7080 }, /* C/N= 5.5dB */ + { 60, 6720 }, /* C/N= 6.0dB */ + { 65, 6320 }, /* C/N= 6.5dB */ + { 70, 6060 }, /* C/N= 7.0dB */ + { 75, 5760 }, /* C/N= 7.5dB */ + { 80, 5480 }, /* C/N= 8.0dB */ + { 85, 5200 }, /* C/N= 8.5dB */ + { 90, 4930 }, /* C/N= 9.0dB */ + { 95, 4680 }, /* C/N= 9.5dB */ + { 100, 4425 }, /* C/N=10.0dB */ + { 105, 4210 }, /* C/N=10.5dB */ + { 110, 3980 }, /* C/N=11.0dB */ + { 115, 3765 }, /* C/N=11.5dB */ + { 120, 3570 }, /* C/N=12.0dB */ + { 125, 3315 }, /* C/N=12.5dB */ + { 130, 3140 }, /* C/N=13.0dB */ + { 135, 2980 }, /* C/N=13.5dB */ + { 140, 2820 }, /* C/N=14.0dB */ + { 145, 2670 }, /* C/N=14.5dB */ + { 150, 2535 }, /* C/N=15.0dB */ + { 160, 2270 }, /* C/N=16.0dB */ + { 170, 2035 }, /* C/N=17.0dB */ + { 180, 1825 }, /* C/N=18.0dB */ + { 190, 1650 }, /* C/N=19.0dB */ + { 200, 1485 }, /* C/N=20.0dB */ + { 210, 1340 }, /* C/N=21.0dB */ + { 220, 1212 }, /* C/N=22.0dB */ + { 230, 1100 }, /* C/N=23.0dB */ + { 240, 1000 }, /* C/N=24.0dB */ + { 250, 910 }, /* C/N=25.0dB */ + { 260, 836 }, /* C/N=26.0dB */ + { 270, 772 }, /* C/N=27.0dB */ + { 280, 718 }, /* C/N=28.0dB */ + { 290, 671 }, /* C/N=29.0dB */ + { 300, 635 }, /* C/N=30.0dB */ + { 310, 602 }, /* C/N=31.0dB */ + { 320, 575 }, /* C/N=32.0dB */ + { 330, 550 }, /* C/N=33.0dB */ + { 350, 517 }, /* C/N=35.0dB */ + { 400, 480 }, /* C/N=40.0dB */ + { 450, 466 }, /* C/N=45.0dB */ + { 500, 464 }, /* C/N=50.0dB */ + { 510, 463 }, /* C/N=51.0dB */ +}; + +static const struct slookup padc_lookup[] = { + { 0, 118000 }, /* PADC= +0dBm */ + { -100, 93600 }, /* PADC= -1dBm */ + { -200, 74500 }, /* PADC= -2dBm */ + { -300, 59100 }, /* PADC= -3dBm */ + { -400, 47000 }, /* PADC= -4dBm */ + { -500, 37300 }, /* PADC= -5dBm */ + { -600, 29650 }, /* PADC= -6dBm */ + { -700, 23520 }, /* PADC= -7dBm */ + { -900, 14850 }, /* PADC= -9dBm */ + { -1100, 9380 }, /* PADC=-11dBm */ + { -1300, 5910 }, /* PADC=-13dBm */ + { -1500, 3730 }, /* PADC=-15dBm */ + { -1700, 2354 }, /* PADC=-17dBm */ + { -1900, 1485 }, /* PADC=-19dBm */ + { -2000, 1179 }, /* PADC=-20dBm */ + { -2100, 1000 }, /* PADC=-21dBm */ +}; + +/********************************************************************* + * Tracking carrier loop carrier QPSK 1/4 to 8PSK 9/10 long Frame + *********************************************************************/ +static const u8 s2car_loop[] = { + /* + * Modcod 2MPon 2MPoff 5MPon 5MPoff 10MPon 10MPoff + * 20MPon 20MPoff 30MPon 30MPoff + */ + + /* FE_QPSK_14 */ + 0x0C, 0x3C, 0x0B, 0x3C, 0x2A, 0x2C, 0x2A, 0x1C, 0x3A, 0x3B, + /* FE_QPSK_13 */ + 0x0C, 0x3C, 0x0B, 0x3C, 0x2A, 0x2C, 0x3A, 0x0C, 0x3A, 0x2B, + /* FE_QPSK_25 */ + 0x1C, 0x3C, 0x1B, 0x3C, 0x3A, 0x1C, 0x3A, 0x3B, 0x3A, 0x2B, + /* FE_QPSK_12 */ + 0x0C, 0x1C, 0x2B, 0x1C, 0x0B, 0x2C, 0x0B, 0x0C, 0x2A, 0x2B, + /* FE_QPSK_35 */ + 0x1C, 0x1C, 0x2B, 0x1C, 0x0B, 0x2C, 0x0B, 0x0C, 0x2A, 0x2B, + /* FE_QPSK_23 */ + 0x2C, 0x2C, 0x2B, 0x1C, 0x0B, 0x2C, 0x0B, 0x0C, 0x2A, 0x2B, + /* FE_QPSK_34 */ + 0x3C, 0x2C, 0x3B, 0x2C, 0x1B, 0x1C, 0x1B, 0x3B, 0x3A, 0x1B, + /* FE_QPSK_45 */ + 0x0D, 0x3C, 0x3B, 0x2C, 0x1B, 0x1C, 0x1B, 0x3B, 0x3A, 0x1B, + /* FE_QPSK_56 */ + 0x1D, 0x3C, 0x0C, 0x2C, 0x2B, 0x1C, 0x1B, 0x3B, 0x0B, 0x1B, + /* FE_QPSK_89 */ + 0x3D, 0x0D, 0x0C, 0x2C, 0x2B, 0x0C, 0x2B, 0x2B, 0x0B, 0x0B, + /* FE_QPSK_910 */ + 0x1E, 0x0D, 0x1C, 0x2C, 0x3B, 0x0C, 0x2B, 0x2B, 0x1B, 0x0B, + /* FE_8PSK_35 */ + 0x28, 0x09, 0x28, 0x09, 0x28, 0x09, 0x28, 0x08, 0x28, 0x27, + /* FE_8PSK_23 */ + 0x19, 0x29, 0x19, 0x29, 0x19, 0x29, 0x38, 0x19, 0x28, 0x09, + /* FE_8PSK_34 */ + 0x1A, 0x0B, 0x1A, 0x3A, 0x0A, 0x2A, 0x39, 0x2A, 0x39, 0x1A, + /* FE_8PSK_56 */ + 0x2B, 0x2B, 0x1B, 0x1B, 0x0B, 0x1B, 0x1A, 0x0B, 0x1A, 0x1A, + /* FE_8PSK_89 */ + 0x0C, 0x0C, 0x3B, 0x3B, 0x1B, 0x1B, 0x2A, 0x0B, 0x2A, 0x2A, + /* FE_8PSK_910 */ + 0x0C, 0x1C, 0x0C, 0x3B, 0x2B, 0x1B, 0x3A, 0x0B, 0x2A, 0x2A, + + /********************************************************************** + * Tracking carrier loop carrier 16APSK 2/3 to 32APSK 9/10 long Frame + **********************************************************************/ + + /* + * Modcod 2MPon 2MPoff 5MPon 5MPoff 10MPon 10MPoff 20MPon + * 20MPoff 30MPon 30MPoff + */ + + /* FE_16APSK_23 */ + 0x0A, 0x0A, 0x0A, 0x0A, 0x1A, 0x0A, 0x39, 0x0A, 0x29, 0x0A, + /* FE_16APSK_34 */ + 0x0A, 0x0A, 0x0A, 0x0A, 0x0B, 0x0A, 0x2A, 0x0A, 0x1A, 0x0A, + /* FE_16APSK_45 */ + 0x0A, 0x0A, 0x0A, 0x0A, 0x1B, 0x0A, 0x3A, 0x0A, 0x2A, 0x0A, + /* FE_16APSK_56 */ + 0x0A, 0x0A, 0x0A, 0x0A, 0x1B, 0x0A, 0x3A, 0x0A, 0x2A, 0x0A, + /* FE_16APSK_89 */ + 0x0A, 0x0A, 0x0A, 0x0A, 0x2B, 0x0A, 0x0B, 0x0A, 0x3A, 0x0A, + /* FE_16APSK_910 */ + 0x0A, 0x0A, 0x0A, 0x0A, 0x2B, 0x0A, 0x0B, 0x0A, 0x3A, 0x0A, + /* FE_32APSK_34 */ + 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, + /* FE_32APSK_45 */ + 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, + /* FE_32APSK_56 */ + 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, + /* FE_32APSK_89 */ + 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, + /* FE_32APSK_910 */ + 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, +}; + +static u8 get_optim_cloop(struct stv *state, + enum fe_stv0910_mod_cod mod_cod, u32 pilots) +{ + int i = 0; + + if (mod_cod >= FE_32APSK_910) + i = ((int)FE_32APSK_910 - (int)FE_QPSK_14) * 10; + else if (mod_cod >= FE_QPSK_14) + i = ((int)mod_cod - (int)FE_QPSK_14) * 10; + + if (state->symbol_rate <= 3000000) + i += 0; + else if (state->symbol_rate <= 7000000) + i += 2; + else if (state->symbol_rate <= 15000000) + i += 4; + else if (state->symbol_rate <= 25000000) + i += 6; + else + i += 8; + + if (!pilots) + i += 1; + + return s2car_loop[i]; +} + +static int get_cur_symbol_rate(struct stv *state, u32 *p_symbol_rate) +{ + int status = 0; + u8 symb_freq0; + u8 symb_freq1; + u8 symb_freq2; + u8 symb_freq3; + u8 tim_offs0; + u8 tim_offs1; + u8 tim_offs2; + u32 symbol_rate; + s32 timing_offset; + + *p_symbol_rate = 0; + if (!state->started) + return status; + + read_reg(state, RSTV0910_P2_SFR3 + state->regoff, &symb_freq3); + read_reg(state, RSTV0910_P2_SFR2 + state->regoff, &symb_freq2); + read_reg(state, RSTV0910_P2_SFR1 + state->regoff, &symb_freq1); + read_reg(state, RSTV0910_P2_SFR0 + state->regoff, &symb_freq0); + read_reg(state, RSTV0910_P2_TMGREG2 + state->regoff, &tim_offs2); + read_reg(state, RSTV0910_P2_TMGREG1 + state->regoff, &tim_offs1); + read_reg(state, RSTV0910_P2_TMGREG0 + state->regoff, &tim_offs0); + + symbol_rate = ((u32)symb_freq3 << 24) | ((u32)symb_freq2 << 16) | + ((u32)symb_freq1 << 8) | (u32)symb_freq0; + timing_offset = ((u32)tim_offs2 << 16) | ((u32)tim_offs1 << 8) | + (u32)tim_offs0; + + if ((timing_offset & (1 << 23)) != 0) + timing_offset |= 0xFF000000; /* Sign extent */ + + symbol_rate = (u32)(((u64)symbol_rate * state->base->mclk) >> 32); + timing_offset = (s32)(((s64)symbol_rate * (s64)timing_offset) >> 29); + + *p_symbol_rate = symbol_rate + timing_offset; + + return 0; +} + +static int get_signal_parameters(struct stv *state) +{ + u8 tmp; + + if (!state->started) + return -EINVAL; + + if (state->receive_mode == RCVMODE_DVBS2) { + read_reg(state, RSTV0910_P2_DMDMODCOD + state->regoff, &tmp); + state->mod_cod = (enum fe_stv0910_mod_cod)((tmp & 0x7c) >> 2); + state->pilots = (tmp & 0x01) != 0; + state->fectype = (enum dvbs2_fectype)((tmp & 0x02) >> 1); + + } else if (state->receive_mode == RCVMODE_DVBS) { + read_reg(state, RSTV0910_P2_VITCURPUN + state->regoff, &tmp); + state->puncture_rate = FEC_NONE; + switch (tmp & 0x1F) { + case 0x0d: + state->puncture_rate = FEC_1_2; + break; + case 0x12: + state->puncture_rate = FEC_2_3; + break; + case 0x15: + state->puncture_rate = FEC_3_4; + break; + case 0x18: + state->puncture_rate = FEC_5_6; + break; + case 0x1a: + state->puncture_rate = FEC_7_8; + break; + } + state->is_vcm = 0; + state->is_standard_broadcast = 1; + state->feroll_off = FE_SAT_35; + } + return 0; +} + +static int tracking_optimization(struct stv *state) +{ + u8 tmp; + + read_reg(state, RSTV0910_P2_DMDCFGMD + state->regoff, &tmp); + tmp &= ~0xC0; + + switch (state->receive_mode) { + case RCVMODE_DVBS: + tmp |= 0x40; + break; + case RCVMODE_DVBS2: + tmp |= 0x80; + break; + default: + tmp |= 0xC0; + break; + } + write_reg(state, RSTV0910_P2_DMDCFGMD + state->regoff, tmp); + + if (state->receive_mode == RCVMODE_DVBS2) { + /* Disable Reed-Solomon */ + write_shared_reg(state, + RSTV0910_TSTTSRS, state->nr ? 0x02 : 0x01, + 0x03); + + if (state->fectype == DVBS2_64K) { + u8 aclc = get_optim_cloop(state, state->mod_cod, + state->pilots); + + if (state->mod_cod <= FE_QPSK_910) { + write_reg(state, RSTV0910_P2_ACLC2S2Q + + state->regoff, aclc); + } else if (state->mod_cod <= FE_8PSK_910) { + write_reg(state, RSTV0910_P2_ACLC2S2Q + + state->regoff, 0x2a); + write_reg(state, RSTV0910_P2_ACLC2S28 + + state->regoff, aclc); + } else if (state->mod_cod <= FE_16APSK_910) { + write_reg(state, RSTV0910_P2_ACLC2S2Q + + state->regoff, 0x2a); + write_reg(state, RSTV0910_P2_ACLC2S216A + + state->regoff, aclc); + } else if (state->mod_cod <= FE_32APSK_910) { + write_reg(state, RSTV0910_P2_ACLC2S2Q + + state->regoff, 0x2a); + write_reg(state, RSTV0910_P2_ACLC2S232A + + state->regoff, aclc); + } + } + } + return 0; +} + +static s32 table_lookup(const struct slookup *table, + int table_size, u32 reg_value) +{ + s32 value; + int imin = 0; + int imax = table_size - 1; + int i; + s32 reg_diff; + + /* Assumes Table[0].RegValue > Table[imax].RegValue */ + if (reg_value >= table[0].reg_value) { + value = table[0].value; + } else if (reg_value <= table[imax].reg_value) { + value = table[imax].value; + } else { + while ((imax - imin) > 1) { + i = (imax + imin) / 2; + if ((table[imin].reg_value >= reg_value) && + (reg_value >= table[i].reg_value)) + imax = i; + else + imin = i; + } + + reg_diff = table[imax].reg_value - table[imin].reg_value; + value = table[imin].value; + if (reg_diff != 0) + value += ((s32)(reg_value - table[imin].reg_value) * + (s32)(table[imax].value + - table[imin].value)) + / (reg_diff); + } + + return value; +} + +static int get_signal_to_noise(struct stv *state, s32 *signal_to_noise) +{ + u8 data0; + u8 data1; + u16 data; + int n_lookup; + const struct slookup *lookup; + + *signal_to_noise = 0; + + if (!state->started) + return -EINVAL; + + if (state->receive_mode == RCVMODE_DVBS2) { + read_reg(state, RSTV0910_P2_NNOSPLHT1 + state->regoff, + &data1); + read_reg(state, RSTV0910_P2_NNOSPLHT0 + state->regoff, + &data0); + n_lookup = ARRAY_SIZE(s2_sn_lookup); + lookup = s2_sn_lookup; + } else { + read_reg(state, RSTV0910_P2_NNOSDATAT1 + state->regoff, + &data1); + read_reg(state, RSTV0910_P2_NNOSDATAT0 + state->regoff, + &data0); + n_lookup = ARRAY_SIZE(s1_sn_lookup); + lookup = s1_sn_lookup; + } + data = (((u16)data1) << 8) | (u16)data0; + *signal_to_noise = table_lookup(lookup, n_lookup, data); + return 0; +} + +static int get_bit_error_rate_s(struct stv *state, u32 *bernumerator, + u32 *berdenominator) +{ + u8 regs[3]; + + int status = read_regs(state, + RSTV0910_P2_ERRCNT12 + state->regoff, + regs, 3); + + if (status) + return -EINVAL; + + if ((regs[0] & 0x80) == 0) { + state->last_berdenominator = 1ULL << ((state->berscale * 2) + + 10 + 3); + state->last_bernumerator = ((u32)(regs[0] & 0x7F) << 16) | + ((u32)regs[1] << 8) | regs[2]; + if (state->last_bernumerator < 256 && state->berscale < 6) { + state->berscale += 1; + status = write_reg(state, RSTV0910_P2_ERRCTRL1 + + state->regoff, + 0x20 | state->berscale); + } else if (state->last_bernumerator > 1024 && + state->berscale > 2) { + state->berscale -= 1; + status = write_reg(state, RSTV0910_P2_ERRCTRL1 + + state->regoff, 0x20 | + state->berscale); + } + } + *bernumerator = state->last_bernumerator; + *berdenominator = state->last_berdenominator; + return 0; +} + +static u32 dvbs2_nbch(enum dvbs2_mod_cod mod_cod, enum dvbs2_fectype fectype) +{ + static const u32 nbch[][2] = { + { 0, 0}, /* DUMMY_PLF */ + {16200, 3240}, /* QPSK_1_4, */ + {21600, 5400}, /* QPSK_1_3, */ + {25920, 6480}, /* QPSK_2_5, */ + {32400, 7200}, /* QPSK_1_2, */ + {38880, 9720}, /* QPSK_3_5, */ + {43200, 10800}, /* QPSK_2_3, */ + {48600, 11880}, /* QPSK_3_4, */ + {51840, 12600}, /* QPSK_4_5, */ + {54000, 13320}, /* QPSK_5_6, */ + {57600, 14400}, /* QPSK_8_9, */ + {58320, 16000}, /* QPSK_9_10, */ + {43200, 9720}, /* 8PSK_3_5, */ + {48600, 10800}, /* 8PSK_2_3, */ + {51840, 11880}, /* 8PSK_3_4, */ + {54000, 13320}, /* 8PSK_5_6, */ + {57600, 14400}, /* 8PSK_8_9, */ + {58320, 16000}, /* 8PSK_9_10, */ + {43200, 10800}, /* 16APSK_2_3, */ + {48600, 11880}, /* 16APSK_3_4, */ + {51840, 12600}, /* 16APSK_4_5, */ + {54000, 13320}, /* 16APSK_5_6, */ + {57600, 14400}, /* 16APSK_8_9, */ + {58320, 16000}, /* 16APSK_9_10 */ + {48600, 11880}, /* 32APSK_3_4, */ + {51840, 12600}, /* 32APSK_4_5, */ + {54000, 13320}, /* 32APSK_5_6, */ + {57600, 14400}, /* 32APSK_8_9, */ + {58320, 16000}, /* 32APSK_9_10 */ + }; + + if (mod_cod >= DVBS2_QPSK_1_4 && + mod_cod <= DVBS2_32APSK_9_10 && fectype <= DVBS2_16K) + return nbch[mod_cod][fectype]; + return 64800; +} + +static int get_bit_error_rate_s2(struct stv *state, u32 *bernumerator, + u32 *berdenominator) +{ + u8 regs[3]; + + int status = read_regs(state, RSTV0910_P2_ERRCNT12 + state->regoff, + regs, 3); + + if (status) + return -EINVAL; + + if ((regs[0] & 0x80) == 0) { + state->last_berdenominator = + dvbs2_nbch((enum dvbs2_mod_cod)state->mod_cod, + state->fectype) << + (state->berscale * 2); + state->last_bernumerator = (((u32)regs[0] & 0x7F) << 16) | + ((u32)regs[1] << 8) | regs[2]; + if (state->last_bernumerator < 256 && state->berscale < 6) { + state->berscale += 1; + write_reg(state, RSTV0910_P2_ERRCTRL1 + state->regoff, + 0x20 | state->berscale); + } else if (state->last_bernumerator > 1024 && + state->berscale > 2) { + state->berscale -= 1; + write_reg(state, RSTV0910_P2_ERRCTRL1 + state->regoff, + 0x20 | state->berscale); + } + } + *bernumerator = state->last_bernumerator; + *berdenominator = state->last_berdenominator; + return status; +} + +static int get_bit_error_rate(struct stv *state, u32 *bernumerator, + u32 *berdenominator) +{ + *bernumerator = 0; + *berdenominator = 1; + + switch (state->receive_mode) { + case RCVMODE_DVBS: + return get_bit_error_rate_s(state, + bernumerator, berdenominator); + case RCVMODE_DVBS2: + return get_bit_error_rate_s2(state, + bernumerator, berdenominator); + default: + break; + } + return 0; +} + +static int set_mclock(struct stv *state, u32 master_clock) +{ + u32 idf = 1; + u32 odf = 4; + u32 quartz = state->base->extclk / 1000000; + u32 fphi = master_clock / 1000000; + u32 ndiv = (fphi * odf * idf) / quartz; + u32 cp = 7; + u32 fvco; + + if (ndiv >= 7 && ndiv <= 71) + cp = 7; + else if (ndiv >= 72 && ndiv <= 79) + cp = 8; + else if (ndiv >= 80 && ndiv <= 87) + cp = 9; + else if (ndiv >= 88 && ndiv <= 95) + cp = 10; + else if (ndiv >= 96 && ndiv <= 103) + cp = 11; + else if (ndiv >= 104 && ndiv <= 111) + cp = 12; + else if (ndiv >= 112 && ndiv <= 119) + cp = 13; + else if (ndiv >= 120 && ndiv <= 127) + cp = 14; + else if (ndiv >= 128 && ndiv <= 135) + cp = 15; + else if (ndiv >= 136 && ndiv <= 143) + cp = 16; + else if (ndiv >= 144 && ndiv <= 151) + cp = 17; + else if (ndiv >= 152 && ndiv <= 159) + cp = 18; + else if (ndiv >= 160 && ndiv <= 167) + cp = 19; + else if (ndiv >= 168 && ndiv <= 175) + cp = 20; + else if (ndiv >= 176 && ndiv <= 183) + cp = 21; + else if (ndiv >= 184 && ndiv <= 191) + cp = 22; + else if (ndiv >= 192 && ndiv <= 199) + cp = 23; + else if (ndiv >= 200 && ndiv <= 207) + cp = 24; + else if (ndiv >= 208 && ndiv <= 215) + cp = 25; + else if (ndiv >= 216 && ndiv <= 223) + cp = 26; + else if (ndiv >= 224 && ndiv <= 225) + cp = 27; + + write_reg(state, RSTV0910_NCOARSE, (cp << 3) | idf); + write_reg(state, RSTV0910_NCOARSE2, odf); + write_reg(state, RSTV0910_NCOARSE1, ndiv); + + fvco = (quartz * 2 * ndiv) / idf; + state->base->mclk = fvco / (2 * odf) * 1000000; + + return 0; +} + +static int stop(struct stv *state) +{ + if (state->started) { + u8 tmp; + + write_reg(state, RSTV0910_P2_TSCFGH + state->regoff, + state->tscfgh | 0x01); + read_reg(state, RSTV0910_P2_PDELCTRL1 + state->regoff, &tmp); + tmp &= ~0x01; /* release reset DVBS2 packet delin */ + write_reg(state, RSTV0910_P2_PDELCTRL1 + state->regoff, tmp); + /* Blind optim*/ + write_reg(state, RSTV0910_P2_AGC2O + state->regoff, 0x5B); + /* Stop the demod */ + write_reg(state, RSTV0910_P2_DMDISTATE + state->regoff, 0x5c); + state->started = 0; + } + state->receive_mode = RCVMODE_NONE; + return 0; +} + +static void set_pls(struct stv *state, u32 pls_code) +{ + if (pls_code == state->cur_scrambling_code) + return; + + /* PLROOT2 bit 2 = gold code */ + write_reg(state, RSTV0910_P2_PLROOT0 + state->regoff, + pls_code & 0xff); + write_reg(state, RSTV0910_P2_PLROOT1 + state->regoff, + (pls_code >> 8) & 0xff); + write_reg(state, RSTV0910_P2_PLROOT2 + state->regoff, + 0x04 | ((pls_code >> 16) & 0x03)); + state->cur_scrambling_code = pls_code; +} + +static void set_isi(struct stv *state, u32 isi) +{ + if (isi == NO_STREAM_ID_FILTER) + return; + if (isi == 0x80000000) { + SET_FIELD(FORCE_CONTINUOUS, 1); + SET_FIELD(TSOUT_NOSYNC, 1); + } else { + SET_FIELD(FILTER_EN, 1); + write_reg(state, RSTV0910_P2_ISIENTRY + state->regoff, + isi & 0xff); + write_reg(state, RSTV0910_P2_ISIBITENA + state->regoff, 0xff); + } + SET_FIELD(ALGOSWRST, 1); + SET_FIELD(ALGOSWRST, 0); +} + +static void set_stream_modes(struct stv *state, + struct dtv_frontend_properties *p) +{ + set_isi(state, p->stream_id); + set_pls(state, p->scrambling_sequence_index); +} + +static int init_search_param(struct stv *state, + struct dtv_frontend_properties *p) +{ + SET_FIELD(FORCE_CONTINUOUS, 0); + SET_FIELD(FRAME_MODE, 0); + SET_FIELD(FILTER_EN, 0); + SET_FIELD(TSOUT_NOSYNC, 0); + SET_FIELD(TSFIFO_EMBINDVB, 0); + SET_FIELD(TSDEL_SYNCBYTE, 0); + SET_REG(UPLCCST0, 0xe0); + SET_FIELD(TSINS_TOKEN, 0); + SET_FIELD(HYSTERESIS_THRESHOLD, 0); + SET_FIELD(ISIOBS_MODE, 1); + + set_stream_modes(state, p); + return 0; +} + +static int enable_puncture_rate(struct stv *state, enum fe_code_rate rate) +{ + u8 val; + + switch (rate) { + case FEC_1_2: + val = 0x01; + break; + case FEC_2_3: + val = 0x02; + break; + case FEC_3_4: + val = 0x04; + break; + case FEC_5_6: + val = 0x08; + break; + case FEC_7_8: + val = 0x20; + break; + case FEC_NONE: + default: + val = 0x2f; + break; + } + + return write_reg(state, RSTV0910_P2_PRVIT + state->regoff, val); +} + +static int set_vth_default(struct stv *state) +{ + state->vth[0] = 0xd7; + state->vth[1] = 0x85; + state->vth[2] = 0x58; + state->vth[3] = 0x3a; + state->vth[4] = 0x34; + state->vth[5] = 0x28; + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 0, state->vth[0]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 1, state->vth[1]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 2, state->vth[2]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 3, state->vth[3]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 4, state->vth[4]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 5, state->vth[5]); + return 0; +} + +static int set_vth(struct stv *state) +{ + static const struct slookup vthlookup_table[] = { + {250, 8780}, /* C/N= 1.5dB */ + {100, 7405}, /* C/N= 4.5dB */ + {40, 6330}, /* C/N= 6.5dB */ + {12, 5224}, /* C/N= 8.5dB */ + {5, 4236} /* C/N=10.5dB */ + }; + + int i; + u8 tmp[2]; + int status = read_regs(state, + RSTV0910_P2_NNOSDATAT1 + state->regoff, + tmp, 2); + u16 reg_value = (tmp[0] << 8) | tmp[1]; + s32 vth = table_lookup(vthlookup_table, ARRAY_SIZE(vthlookup_table), + reg_value); + + for (i = 0; i < 6; i += 1) + if (state->vth[i] > vth) + state->vth[i] = vth; + + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 0, state->vth[0]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 1, state->vth[1]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 2, state->vth[2]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 3, state->vth[3]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 4, state->vth[4]); + write_reg(state, RSTV0910_P2_VTH12 + state->regoff + 5, state->vth[5]); + return status; +} + +static int start(struct stv *state, struct dtv_frontend_properties *p) +{ + s32 freq; + u8 reg_dmdcfgmd; + u16 symb; + + if (p->symbol_rate < 100000 || p->symbol_rate > 70000000) + return -EINVAL; + + state->receive_mode = RCVMODE_NONE; + state->demod_lock_time = 0; + + /* Demod Stop */ + if (state->started) + write_reg(state, RSTV0910_P2_DMDISTATE + state->regoff, 0x5C); + + init_search_param(state, p); + + if (p->symbol_rate <= 1000000) { /* SR <=1Msps */ + state->demod_timeout = 3000; + state->fec_timeout = 2000; + } else if (p->symbol_rate <= 2000000) { /* 1Msps < SR <=2Msps */ + state->demod_timeout = 2500; + state->fec_timeout = 1300; + } else if (p->symbol_rate <= 5000000) { /* 2Msps< SR <=5Msps */ + state->demod_timeout = 1000; + state->fec_timeout = 650; + } else if (p->symbol_rate <= 10000000) { /* 5Msps< SR <=10Msps */ + state->demod_timeout = 700; + state->fec_timeout = 350; + } else if (p->symbol_rate < 20000000) { /* 10Msps< SR <=20Msps */ + state->demod_timeout = 400; + state->fec_timeout = 200; + } else { /* SR >=20Msps */ + state->demod_timeout = 300; + state->fec_timeout = 200; + } + + /* Set the Init Symbol rate */ + symb = muldiv32(p->symbol_rate, 65536, state->base->mclk); + write_reg(state, RSTV0910_P2_SFRINIT1 + state->regoff, + ((symb >> 8) & 0x7F)); + write_reg(state, RSTV0910_P2_SFRINIT0 + state->regoff, (symb & 0xFF)); + + state->demod_bits |= 0x80; + write_reg(state, RSTV0910_P2_DEMOD + state->regoff, state->demod_bits); + + /* FE_STV0910_SetSearchStandard */ + read_reg(state, RSTV0910_P2_DMDCFGMD + state->regoff, ®_dmdcfgmd); + write_reg(state, RSTV0910_P2_DMDCFGMD + state->regoff, + reg_dmdcfgmd |= 0xC0); + + write_shared_reg(state, + RSTV0910_TSTTSRS, state->nr ? 0x02 : 0x01, 0x00); + + /* Disable DSS */ + write_reg(state, RSTV0910_P2_FECM + state->regoff, 0x00); + write_reg(state, RSTV0910_P2_PRVIT + state->regoff, 0x2F); + + enable_puncture_rate(state, FEC_NONE); + + /* 8PSK 3/5, 8PSK 2/3 Poff tracking optimization WA */ + write_reg(state, RSTV0910_P2_ACLC2S2Q + state->regoff, 0x0B); + write_reg(state, RSTV0910_P2_ACLC2S28 + state->regoff, 0x0A); + write_reg(state, RSTV0910_P2_BCLC2S2Q + state->regoff, 0x84); + write_reg(state, RSTV0910_P2_BCLC2S28 + state->regoff, 0x84); + write_reg(state, RSTV0910_P2_CARHDR + state->regoff, 0x1C); + write_reg(state, RSTV0910_P2_CARFREQ + state->regoff, 0x79); + + write_reg(state, RSTV0910_P2_ACLC2S216A + state->regoff, 0x29); + write_reg(state, RSTV0910_P2_ACLC2S232A + state->regoff, 0x09); + write_reg(state, RSTV0910_P2_BCLC2S216A + state->regoff, 0x84); + write_reg(state, RSTV0910_P2_BCLC2S232A + state->regoff, 0x84); + + /* + * Reset CAR3, bug DVBS2->DVBS1 lock + * Note: The bit is only pulsed -> no lock on shared register needed + */ + write_reg(state, RSTV0910_TSTRES0, state->nr ? 0x04 : 0x08); + write_reg(state, RSTV0910_TSTRES0, 0); + + set_vth_default(state); + /* Reset demod */ + write_reg(state, RSTV0910_P2_DMDISTATE + state->regoff, 0x1F); + + write_reg(state, RSTV0910_P2_CARCFG + state->regoff, 0x46); + + if (p->symbol_rate <= 5000000) + freq = (state->search_range / 2000) + 80; + else + freq = (state->search_range / 2000) + 1600; + freq = (freq << 16) / (state->base->mclk / 1000); + + write_reg(state, RSTV0910_P2_CFRUP1 + state->regoff, + (freq >> 8) & 0xff); + write_reg(state, RSTV0910_P2_CFRUP0 + state->regoff, (freq & 0xff)); + /* CFR Low Setting */ + freq = -freq; + write_reg(state, RSTV0910_P2_CFRLOW1 + state->regoff, + (freq >> 8) & 0xff); + write_reg(state, RSTV0910_P2_CFRLOW0 + state->regoff, (freq & 0xff)); + + /* init the demod frequency offset to 0 */ + write_reg(state, RSTV0910_P2_CFRINIT1 + state->regoff, 0); + write_reg(state, RSTV0910_P2_CFRINIT0 + state->regoff, 0); + + write_reg(state, RSTV0910_P2_DMDISTATE + state->regoff, 0x1F); + /* Trigger acq */ + write_reg(state, RSTV0910_P2_DMDISTATE + state->regoff, 0x15); + + state->demod_lock_time += TUNING_DELAY; + state->started = 1; + + return 0; +} + +static int init_diseqc(struct stv *state) +{ + u16 offs = state->nr ? 0x40 : 0; /* Address offset */ + u8 freq = ((state->base->mclk + 11000 * 32) / (22000 * 32)); + + /* Disable receiver */ + write_reg(state, RSTV0910_P1_DISRXCFG + offs, 0x00); + write_reg(state, RSTV0910_P1_DISTXCFG + offs, 0xBA); /* Reset = 1 */ + write_reg(state, RSTV0910_P1_DISTXCFG + offs, 0x3A); /* Reset = 0 */ + write_reg(state, RSTV0910_P1_DISTXF22 + offs, freq); + return 0; +} + +static int probe(struct stv *state) +{ + u8 id; + + state->receive_mode = RCVMODE_NONE; + state->started = 0; + + if (read_reg(state, RSTV0910_MID, &id) < 0) + return -ENODEV; + + if (id != 0x51) + return -EINVAL; + + /* Configure the I2C repeater to off */ + write_reg(state, RSTV0910_P1_I2CRPT, 0x24); + /* Configure the I2C repeater to off */ + write_reg(state, RSTV0910_P2_I2CRPT, 0x24); + /* Set the I2C to oversampling ratio */ + write_reg(state, RSTV0910_I2CCFG, 0x88); /* state->i2ccfg */ + + write_reg(state, RSTV0910_OUTCFG, 0x00); /* OUTCFG */ + write_reg(state, RSTV0910_PADCFG, 0x05); /* RFAGC Pads Dev = 05 */ + write_reg(state, RSTV0910_SYNTCTRL, 0x02); /* SYNTCTRL */ + write_reg(state, RSTV0910_TSGENERAL, state->tsgeneral); /* TSGENERAL */ + write_reg(state, RSTV0910_CFGEXT, 0x02); /* CFGEXT */ + + if (state->single) + write_reg(state, RSTV0910_GENCFG, 0x14); /* GENCFG */ + else + write_reg(state, RSTV0910_GENCFG, 0x15); /* GENCFG */ + + write_reg(state, RSTV0910_P1_TNRCFG2, 0x02); /* IQSWAP = 0 */ + write_reg(state, RSTV0910_P2_TNRCFG2, 0x82); /* IQSWAP = 1 */ + + write_reg(state, RSTV0910_P1_CAR3CFG, 0x02); + write_reg(state, RSTV0910_P2_CAR3CFG, 0x02); + write_reg(state, RSTV0910_P1_DMDCFG4, 0x04); + write_reg(state, RSTV0910_P2_DMDCFG4, 0x04); + + write_reg(state, RSTV0910_TSTRES0, 0x80); /* LDPC Reset */ + write_reg(state, RSTV0910_TSTRES0, 0x00); + + write_reg(state, RSTV0910_P1_TSPIDFLT1, 0x00); + write_reg(state, RSTV0910_P2_TSPIDFLT1, 0x00); + + write_reg(state, RSTV0910_P1_TMGCFG2, 0x80); + write_reg(state, RSTV0910_P2_TMGCFG2, 0x80); + + set_mclock(state, 135000000); + + /* TS output */ + write_reg(state, RSTV0910_P1_TSCFGH, state->tscfgh | 0x01); + write_reg(state, RSTV0910_P1_TSCFGH, state->tscfgh); + write_reg(state, RSTV0910_P1_TSCFGM, 0xC0); /* Manual speed */ + write_reg(state, RSTV0910_P1_TSCFGL, 0x20); + + write_reg(state, RSTV0910_P1_TSSPEED, state->tsspeed); + + write_reg(state, RSTV0910_P2_TSCFGH, state->tscfgh | 0x01); + write_reg(state, RSTV0910_P2_TSCFGH, state->tscfgh); + write_reg(state, RSTV0910_P2_TSCFGM, 0xC0); /* Manual speed */ + write_reg(state, RSTV0910_P2_TSCFGL, 0x20); + + write_reg(state, RSTV0910_P2_TSSPEED, state->tsspeed); + + /* Reset stream merger */ + write_reg(state, RSTV0910_P1_TSCFGH, state->tscfgh | 0x01); + write_reg(state, RSTV0910_P2_TSCFGH, state->tscfgh | 0x01); + write_reg(state, RSTV0910_P1_TSCFGH, state->tscfgh); + write_reg(state, RSTV0910_P2_TSCFGH, state->tscfgh); + + write_reg(state, RSTV0910_P1_I2CRPT, state->i2crpt); + write_reg(state, RSTV0910_P2_I2CRPT, state->i2crpt); + + write_reg(state, RSTV0910_P1_TSINSDELM, 0x17); + write_reg(state, RSTV0910_P1_TSINSDELL, 0xff); + + write_reg(state, RSTV0910_P2_TSINSDELM, 0x17); + write_reg(state, RSTV0910_P2_TSINSDELL, 0xff); + + init_diseqc(state); + return 0; +} + +static int gate_ctrl(struct dvb_frontend *fe, int enable) +{ + struct stv *state = fe->demodulator_priv; + u8 i2crpt = state->i2crpt & ~0x86; + + /* + * mutex_lock note: Concurrent I2C gate bus accesses must be + * prevented (STV0910 = dual demod on a single IC with a single I2C + * gate/bus, and two tuners attached), similar to most (if not all) + * other I2C host interfaces/buses. + * + * enable=1 (open I2C gate) will grab the lock + * enable=0 (close I2C gate) releases the lock + */ + + if (enable) { + mutex_lock(&state->base->i2c_lock); + i2crpt |= 0x80; + } else { + i2crpt |= 0x02; + } + + if (write_reg(state, state->nr ? RSTV0910_P2_I2CRPT : + RSTV0910_P1_I2CRPT, i2crpt) < 0) { + /* don't hold the I2C bus lock on failure */ + if (!WARN_ON(!mutex_is_locked(&state->base->i2c_lock))) + mutex_unlock(&state->base->i2c_lock); + dev_err(&state->base->i2c->dev, + "%s() write_reg failure (enable=%d)\n", + __func__, enable); + return -EIO; + } + + state->i2crpt = i2crpt; + + if (!enable) + if (!WARN_ON(!mutex_is_locked(&state->base->i2c_lock))) + mutex_unlock(&state->base->i2c_lock); + return 0; +} + +static void release(struct dvb_frontend *fe) +{ + struct stv *state = fe->demodulator_priv; + + state->base->count--; + if (state->base->count == 0) { + list_del(&state->base->stvlist); + kfree(state->base); + } + kfree(state); +} + +static int set_parameters(struct dvb_frontend *fe) +{ + int stat = 0; + struct stv *state = fe->demodulator_priv; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + + stop(state); + if (fe->ops.tuner_ops.set_params) + fe->ops.tuner_ops.set_params(fe); + state->symbol_rate = p->symbol_rate; + stat = start(state, p); + return stat; +} + +static int manage_matype_info(struct stv *state) +{ + if (!state->started) + return -EINVAL; + if (state->receive_mode == RCVMODE_DVBS2) { + u8 bbheader[2]; + + read_regs(state, RSTV0910_P2_MATSTR1 + state->regoff, + bbheader, 2); + state->feroll_off = + (enum fe_stv0910_roll_off)(bbheader[0] & 0x03); + state->is_vcm = (bbheader[0] & 0x10) == 0; + state->is_standard_broadcast = (bbheader[0] & 0xFC) == 0xF0; + } else if (state->receive_mode == RCVMODE_DVBS) { + state->is_vcm = 0; + state->is_standard_broadcast = 1; + state->feroll_off = FE_SAT_35; + } + return 0; +} + +static int read_snr(struct dvb_frontend *fe) +{ + struct stv *state = fe->demodulator_priv; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + s32 snrval; + + if (!get_signal_to_noise(state, &snrval)) { + p->cnr.stat[0].scale = FE_SCALE_DECIBEL; + p->cnr.stat[0].svalue = 100 * snrval; /* fix scale */ + } else { + p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + return 0; +} + +static int read_ber(struct dvb_frontend *fe) +{ + struct stv *state = fe->demodulator_priv; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + u32 n, d; + + get_bit_error_rate(state, &n, &d); + + p->pre_bit_error.stat[0].scale = FE_SCALE_COUNTER; + p->pre_bit_error.stat[0].uvalue = n; + p->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER; + p->pre_bit_count.stat[0].uvalue = d; + + return 0; +} + +static void read_signal_strength(struct dvb_frontend *fe) +{ + struct stv *state = fe->demodulator_priv; + struct dtv_frontend_properties *p = &state->fe.dtv_property_cache; + u8 reg[2]; + u16 agc; + s32 padc, power = 0; + int i; + + read_regs(state, RSTV0910_P2_AGCIQIN1 + state->regoff, reg, 2); + + agc = (((u32)reg[0]) << 8) | reg[1]; + + for (i = 0; i < 5; i += 1) { + read_regs(state, RSTV0910_P2_POWERI + state->regoff, reg, 2); + power += (u32)reg[0] * (u32)reg[0] + + (u32)reg[1] * (u32)reg[1]; + usleep_range(3000, 4000); + } + power /= 5; + + padc = table_lookup(padc_lookup, ARRAY_SIZE(padc_lookup), power) + 352; + + p->strength.stat[0].scale = FE_SCALE_DECIBEL; + p->strength.stat[0].svalue = (padc - agc); +} + +static int read_status(struct dvb_frontend *fe, enum fe_status *status) +{ + struct stv *state = fe->demodulator_priv; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + u8 dmd_state = 0; + u8 dstatus = 0; + enum receive_mode cur_receive_mode = RCVMODE_NONE; + u32 feclock = 0; + + *status = 0; + + read_reg(state, RSTV0910_P2_DMDSTATE + state->regoff, &dmd_state); + + if (dmd_state & 0x40) { + read_reg(state, RSTV0910_P2_DSTATUS + state->regoff, &dstatus); + if (dstatus & 0x08) + cur_receive_mode = (dmd_state & 0x20) ? + RCVMODE_DVBS : RCVMODE_DVBS2; + } + if (cur_receive_mode == RCVMODE_NONE) { + set_vth(state); + + /* reset signal statistics */ + p->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + + return 0; + } + + *status |= (FE_HAS_SIGNAL + | FE_HAS_CARRIER + | FE_HAS_VITERBI + | FE_HAS_SYNC); + + if (state->receive_mode == RCVMODE_NONE) { + state->receive_mode = cur_receive_mode; + state->demod_lock_time = jiffies; + state->first_time_lock = 1; + + get_signal_parameters(state); + tracking_optimization(state); + + write_reg(state, RSTV0910_P2_TSCFGH + state->regoff, + state->tscfgh); + usleep_range(3000, 4000); + write_reg(state, RSTV0910_P2_TSCFGH + state->regoff, + state->tscfgh | 0x01); + write_reg(state, RSTV0910_P2_TSCFGH + state->regoff, + state->tscfgh); + } + if (dmd_state & 0x40) { + if (state->receive_mode == RCVMODE_DVBS2) { + u8 pdelstatus; + + read_reg(state, + RSTV0910_P2_PDELSTATUS1 + state->regoff, + &pdelstatus); + feclock = (pdelstatus & 0x02) != 0; + } else { + u8 vstatus; + + read_reg(state, + RSTV0910_P2_VSTATUSVIT + state->regoff, + &vstatus); + feclock = (vstatus & 0x08) != 0; + } + } + + if (feclock) { + *status |= FE_HAS_LOCK; + + if (state->first_time_lock) { + u8 tmp; + + state->first_time_lock = 0; + + manage_matype_info(state); + + if (state->receive_mode == RCVMODE_DVBS2) { + /* + * FSTV0910_P2_MANUALSX_ROLLOFF, + * FSTV0910_P2_MANUALS2_ROLLOFF = 0 + */ + state->demod_bits &= ~0x84; + write_reg(state, + RSTV0910_P2_DEMOD + state->regoff, + state->demod_bits); + read_reg(state, + RSTV0910_P2_PDELCTRL2 + state->regoff, + &tmp); + /* reset DVBS2 packet delinator error counter */ + tmp |= 0x40; + write_reg(state, + RSTV0910_P2_PDELCTRL2 + state->regoff, + tmp); + /* reset DVBS2 packet delinator error counter */ + tmp &= ~0x40; + write_reg(state, + RSTV0910_P2_PDELCTRL2 + state->regoff, + tmp); + + state->berscale = 2; + state->last_bernumerator = 0; + state->last_berdenominator = 1; + /* force to PRE BCH Rate */ + write_reg(state, + RSTV0910_P2_ERRCTRL1 + state->regoff, + BER_SRC_S2 | state->berscale); + } else { + state->berscale = 2; + state->last_bernumerator = 0; + state->last_berdenominator = 1; + /* force to PRE RS Rate */ + write_reg(state, + RSTV0910_P2_ERRCTRL1 + state->regoff, + BER_SRC_S | state->berscale); + } + /* Reset the Total packet counter */ + write_reg(state, + RSTV0910_P2_FBERCPT4 + state->regoff, 0x00); + /* + * Reset the packet Error counter2 (and Set it to + * infinite error count mode) + */ + write_reg(state, + RSTV0910_P2_ERRCTRL2 + state->regoff, 0xc1); + + set_vth_default(state); + if (state->receive_mode == RCVMODE_DVBS) + enable_puncture_rate(state, + state->puncture_rate); + } + + /* Use highest signaled ModCod for quality */ + if (state->is_vcm) { + u8 tmp; + enum fe_stv0910_mod_cod mod_cod; + + read_reg(state, RSTV0910_P2_DMDMODCOD + state->regoff, + &tmp); + mod_cod = (enum fe_stv0910_mod_cod)((tmp & 0x7c) >> 2); + + if (mod_cod > state->mod_cod) + state->mod_cod = mod_cod; + } + } + + /* read signal statistics */ + + /* read signal strength */ + read_signal_strength(fe); + + /* read carrier/noise on FE_HAS_CARRIER */ + if (*status & FE_HAS_CARRIER) + read_snr(fe); + else + p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + + /* read ber */ + if (*status & FE_HAS_VITERBI) { + read_ber(fe); + } else { + p->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + return 0; +} + +static int get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *p) +{ + struct stv *state = fe->demodulator_priv; + u8 tmp; + u32 symbolrate; + + if (state->receive_mode == RCVMODE_DVBS2) { + u32 mc; + const enum fe_modulation modcod2mod[0x20] = { + QPSK, QPSK, QPSK, QPSK, + QPSK, QPSK, QPSK, QPSK, + QPSK, QPSK, QPSK, QPSK, + PSK_8, PSK_8, PSK_8, PSK_8, + PSK_8, PSK_8, APSK_16, APSK_16, + APSK_16, APSK_16, APSK_16, APSK_16, + APSK_32, APSK_32, APSK_32, APSK_32, + APSK_32, + }; + const enum fe_code_rate modcod2fec[0x20] = { + FEC_NONE, FEC_NONE, FEC_NONE, FEC_2_5, + FEC_1_2, FEC_3_5, FEC_2_3, FEC_3_4, + FEC_4_5, FEC_5_6, FEC_8_9, FEC_9_10, + FEC_3_5, FEC_2_3, FEC_3_4, FEC_5_6, + FEC_8_9, FEC_9_10, FEC_2_3, FEC_3_4, + FEC_4_5, FEC_5_6, FEC_8_9, FEC_9_10, + FEC_3_4, FEC_4_5, FEC_5_6, FEC_8_9, + FEC_9_10 + }; + read_reg(state, RSTV0910_P2_DMDMODCOD + state->regoff, &tmp); + mc = ((tmp & 0x7c) >> 2); + p->pilot = (tmp & 0x01) ? PILOT_ON : PILOT_OFF; + p->modulation = modcod2mod[mc]; + p->fec_inner = modcod2fec[mc]; + } else if (state->receive_mode == RCVMODE_DVBS) { + read_reg(state, RSTV0910_P2_VITCURPUN + state->regoff, &tmp); + switch (tmp & 0x1F) { + case 0x0d: + p->fec_inner = FEC_1_2; + break; + case 0x12: + p->fec_inner = FEC_2_3; + break; + case 0x15: + p->fec_inner = FEC_3_4; + break; + case 0x18: + p->fec_inner = FEC_5_6; + break; + case 0x1a: + p->fec_inner = FEC_7_8; + break; + default: + p->fec_inner = FEC_NONE; + break; + } + p->rolloff = ROLLOFF_35; + } + + if (state->receive_mode != RCVMODE_NONE) { + get_cur_symbol_rate(state, &symbolrate); + p->symbol_rate = symbolrate; + } + return 0; +} + +static int tune(struct dvb_frontend *fe, bool re_tune, + unsigned int mode_flags, + unsigned int *delay, enum fe_status *status) +{ + struct stv *state = fe->demodulator_priv; + int r; + + if (re_tune) { + r = set_parameters(fe); + if (r) + return r; + state->tune_time = jiffies; + } + + r = read_status(fe, status); + if (r) + return r; + + if (*status & FE_HAS_LOCK) + return 0; + *delay = HZ; + + return 0; +} + +static enum dvbfe_algo get_algo(struct dvb_frontend *fe) +{ + return DVBFE_ALGO_HW; +} + +static int set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) +{ + struct stv *state = fe->demodulator_priv; + u16 offs = state->nr ? 0x40 : 0; + + switch (tone) { + case SEC_TONE_ON: + return write_reg(state, RSTV0910_P1_DISTXCFG + offs, 0x38); + case SEC_TONE_OFF: + return write_reg(state, RSTV0910_P1_DISTXCFG + offs, 0x3a); + default: + break; + } + return -EINVAL; +} + +static int wait_dis(struct stv *state, u8 flag, u8 val) +{ + int i; + u8 stat; + u16 offs = state->nr ? 0x40 : 0; + + for (i = 0; i < 10; i++) { + read_reg(state, RSTV0910_P1_DISTXSTATUS + offs, &stat); + if ((stat & flag) == val) + return 0; + usleep_range(10000, 11000); + } + return -ETIMEDOUT; +} + +static int send_master_cmd(struct dvb_frontend *fe, + struct dvb_diseqc_master_cmd *cmd) +{ + struct stv *state = fe->demodulator_priv; + int i; + + SET_FIELD(DISEQC_MODE, 2); + SET_FIELD(DIS_PRECHARGE, 1); + for (i = 0; i < cmd->msg_len; i++) { + wait_dis(state, 0x40, 0x00); + SET_REG(DISTXFIFO, cmd->msg[i]); + } + SET_FIELD(DIS_PRECHARGE, 0); + wait_dis(state, 0x20, 0x20); + return 0; +} + +static int send_burst(struct dvb_frontend *fe, enum fe_sec_mini_cmd burst) +{ + struct stv *state = fe->demodulator_priv; + u8 value; + + if (burst == SEC_MINI_A) { + SET_FIELD(DISEQC_MODE, 3); + value = 0x00; + } else { + SET_FIELD(DISEQC_MODE, 2); + value = 0xFF; + } + + SET_FIELD(DIS_PRECHARGE, 1); + wait_dis(state, 0x40, 0x00); + SET_REG(DISTXFIFO, value); + SET_FIELD(DIS_PRECHARGE, 0); + wait_dis(state, 0x20, 0x20); + + return 0; +} + +static int sleep(struct dvb_frontend *fe) +{ + struct stv *state = fe->demodulator_priv; + + stop(state); + return 0; +} + +static const struct dvb_frontend_ops stv0910_ops = { + .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS }, + .info = { + .name = "ST STV0910", + .frequency_min_hz = 950 * MHz, + .frequency_max_hz = 2150 * MHz, + .symbol_rate_min = 100000, + .symbol_rate_max = 70000000, + .caps = FE_CAN_INVERSION_AUTO | + FE_CAN_FEC_AUTO | + FE_CAN_QPSK | + FE_CAN_2G_MODULATION | + FE_CAN_MULTISTREAM + }, + .sleep = sleep, + .release = release, + .i2c_gate_ctrl = gate_ctrl, + .set_frontend = set_parameters, + .get_frontend_algo = get_algo, + .get_frontend = get_frontend, + .tune = tune, + .read_status = read_status, + .set_tone = set_tone, + + .diseqc_send_master_cmd = send_master_cmd, + .diseqc_send_burst = send_burst, +}; + +static struct stv_base *match_base(struct i2c_adapter *i2c, u8 adr) +{ + struct stv_base *p; + + list_for_each_entry(p, &stvlist, stvlist) + if (p->i2c == i2c && p->adr == adr) + return p; + return NULL; +} + +static void stv0910_init_stats(struct stv *state) +{ + struct dtv_frontend_properties *p = &state->fe.dtv_property_cache; + + p->strength.len = 1; + p->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->cnr.len = 1; + p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_error.len = 1; + p->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_count.len = 1; + p->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; +} + +struct dvb_frontend *stv0910_attach(struct i2c_adapter *i2c, + struct stv0910_cfg *cfg, + int nr) +{ + struct stv *state; + struct stv_base *base; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return NULL; + + state->tscfgh = 0x20 | (cfg->parallel ? 0 : 0x40); + state->tsgeneral = (cfg->parallel == 2) ? 0x02 : 0x00; + state->i2crpt = 0x0A | ((cfg->rptlvl & 0x07) << 4); + /* use safe tsspeed value if unspecified through stv0910_cfg */ + state->tsspeed = (cfg->tsspeed ? cfg->tsspeed : 0x28); + state->nr = nr; + state->regoff = state->nr ? 0 : 0x200; + state->search_range = 16000000; + state->demod_bits = 0x10; /* Inversion : Auto with reset to 0 */ + state->receive_mode = RCVMODE_NONE; + state->cur_scrambling_code = (~0U); + state->single = cfg->single ? 1 : 0; + + base = match_base(i2c, cfg->adr); + if (base) { + base->count++; + state->base = base; + } else { + base = kzalloc(sizeof(*base), GFP_KERNEL); + if (!base) + goto fail; + base->i2c = i2c; + base->adr = cfg->adr; + base->count = 1; + base->extclk = cfg->clk ? cfg->clk : 30000000; + + mutex_init(&base->i2c_lock); + mutex_init(&base->reg_lock); + state->base = base; + if (probe(state) < 0) { + dev_info(&i2c->dev, "No demod found at adr %02X on %s\n", + cfg->adr, dev_name(&i2c->dev)); + kfree(base); + goto fail; + } + list_add(&base->stvlist, &stvlist); + } + state->fe.ops = stv0910_ops; + state->fe.demodulator_priv = state; + state->nr = nr; + + dev_info(&i2c->dev, "%s demod found at adr %02X on %s\n", + state->fe.ops.info.name, cfg->adr, dev_name(&i2c->dev)); + + stv0910_init_stats(state); + + return &state->fe; + +fail: + kfree(state); + return NULL; +} +EXPORT_SYMBOL_GPL(stv0910_attach); + +MODULE_DESCRIPTION("ST STV0910 multistandard frontend driver"); +MODULE_AUTHOR("Ralph and Marcus Metzler, Manfred Voelkel"); +MODULE_LICENSE("GPL v2"); |