Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1 | /* |
| 2 | STB0899 Multistandard Frontend driver |
| 3 | Copyright (C) Manu Abraham (abraham.manu@gmail.com) |
| 4 | |
| 5 | Copyright (C) ST Microelectronics |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
| 21 | |
Martin Kepplinger | 2948c01 | 2015-01-25 11:51:35 -0300 | [diff] [blame] | 22 | #include <linux/bitops.h> |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 23 | #include "stb0899_drv.h" |
| 24 | #include "stb0899_priv.h" |
| 25 | #include "stb0899_reg.h" |
| 26 | |
Hans Petter Selasky | 96c6879 | 2011-05-23 11:06:22 -0300 | [diff] [blame] | 27 | static inline u32 stb0899_do_div(u64 n, u32 d) |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 28 | { |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 29 | /* wrap do_div() for ease of use */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 30 | |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 31 | do_div(n, d); |
| 32 | return n; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 33 | } |
| 34 | |
Hans Verkuil | 9c17e2e | 2009-01-10 08:31:15 -0300 | [diff] [blame] | 35 | #if 0 |
| 36 | /* These functions are currently unused */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 37 | /* |
| 38 | * stb0899_calc_srate |
| 39 | * Compute symbol rate |
| 40 | */ |
| 41 | static u32 stb0899_calc_srate(u32 master_clk, u8 *sfr) |
| 42 | { |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 43 | u64 tmp; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 44 | |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 45 | /* srate = (SFR * master_clk) >> 20 */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 46 | |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 47 | /* sfr is of size 20 bit, stored with an offset of 4 bit */ |
| 48 | tmp = (((u32)sfr[0]) << 16) | (((u32)sfr[1]) << 8) | sfr[2]; |
| 49 | tmp &= ~0xf; |
| 50 | tmp *= master_clk; |
| 51 | tmp >>= 24; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 52 | |
| 53 | return tmp; |
| 54 | } |
| 55 | |
| 56 | /* |
| 57 | * stb0899_get_srate |
| 58 | * Get the current symbol rate |
| 59 | */ |
Mauro Carvalho Chehab | ffbc5f8 | 2009-01-05 01:34:20 -0300 | [diff] [blame] | 60 | static u32 stb0899_get_srate(struct stb0899_state *state) |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 61 | { |
| 62 | struct stb0899_internal *internal = &state->internal; |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 63 | u8 sfr[3]; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 64 | |
| 65 | stb0899_read_regs(state, STB0899_SFRH, sfr, 3); |
| 66 | |
| 67 | return stb0899_calc_srate(internal->master_clk, sfr); |
| 68 | } |
Hans Verkuil | 9c17e2e | 2009-01-10 08:31:15 -0300 | [diff] [blame] | 69 | #endif |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 70 | |
| 71 | /* |
| 72 | * stb0899_set_srate |
| 73 | * Set symbol frequency |
| 74 | * MasterClock: master clock frequency (hz) |
| 75 | * SymbolRate: symbol rate (bauds) |
| 76 | * return symbol frequency |
| 77 | */ |
| 78 | static u32 stb0899_set_srate(struct stb0899_state *state, u32 master_clk, u32 srate) |
| 79 | { |
Manu Abraham | b359325 | 2008-01-25 20:56:21 -0300 | [diff] [blame] | 80 | u32 tmp; |
| 81 | u8 sfr[3]; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 82 | |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 83 | dprintk(state->verbose, FE_DEBUG, 1, "-->"); |
| 84 | /* |
| 85 | * in order to have the maximum precision, the symbol rate entered into |
| 86 | * the chip is computed as the closest value of the "true value". |
| 87 | * In this purpose, the symbol rate value is rounded (1 is added on the bit |
| 88 | * below the LSB ) |
Manu Abraham | b359325 | 2008-01-25 20:56:21 -0300 | [diff] [blame] | 89 | * |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 90 | * srate = (SFR * master_clk) >> 20 |
| 91 | * <=> |
| 92 | * SFR = srate << 20 / master_clk |
| 93 | * |
| 94 | * rounded: |
| 95 | * SFR = (srate << 21 + master_clk) / (2 * master_clk) |
| 96 | * |
| 97 | * stored as 20 bit number with an offset of 4 bit: |
| 98 | * sfr = SFR << 4; |
| 99 | */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 100 | |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 101 | tmp = stb0899_do_div((((u64)srate) << 21) + master_clk, 2 * master_clk); |
| 102 | tmp <<= 4; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 103 | |
Reinhard Nissl | 27713c8 | 2008-01-21 16:43:18 -0300 | [diff] [blame] | 104 | sfr[0] = tmp >> 16; |
| 105 | sfr[1] = tmp >> 8; |
| 106 | sfr[2] = tmp; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 107 | |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 108 | stb0899_write_regs(state, STB0899_SFRH, sfr, 3); |
| 109 | |
| 110 | return srate; |
| 111 | } |
| 112 | |
| 113 | /* |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 114 | * stb0899_calc_derot_time |
| 115 | * Compute the amount of time needed by the derotator to lock |
| 116 | * SymbolRate: Symbol rate |
| 117 | * return: derotator time constant (ms) |
| 118 | */ |
| 119 | static long stb0899_calc_derot_time(long srate) |
| 120 | { |
| 121 | if (srate > 0) |
| 122 | return (100000 / (srate / 1000)); |
| 123 | else |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * stb0899_carr_width |
| 129 | * Compute the width of the carrier |
| 130 | * return: width of carrier (kHz or Mhz) |
| 131 | */ |
| 132 | long stb0899_carr_width(struct stb0899_state *state) |
| 133 | { |
| 134 | struct stb0899_internal *internal = &state->internal; |
| 135 | |
| 136 | return (internal->srate + (internal->srate * internal->rolloff) / 100); |
| 137 | } |
| 138 | |
| 139 | /* |
| 140 | * stb0899_first_subrange |
| 141 | * Compute the first subrange of the search |
| 142 | */ |
| 143 | static void stb0899_first_subrange(struct stb0899_state *state) |
| 144 | { |
| 145 | struct stb0899_internal *internal = &state->internal; |
| 146 | struct stb0899_params *params = &state->params; |
| 147 | struct stb0899_config *config = state->config; |
| 148 | |
| 149 | int range = 0; |
| 150 | u32 bandwidth = 0; |
| 151 | |
| 152 | if (config->tuner_get_bandwidth) { |
Manu Abraham | 9a28609 | 2008-02-23 18:02:45 -0300 | [diff] [blame] | 153 | stb0899_i2c_gate_ctrl(&state->frontend, 1); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 154 | config->tuner_get_bandwidth(&state->frontend, &bandwidth); |
Manu Abraham | 9a28609 | 2008-02-23 18:02:45 -0300 | [diff] [blame] | 155 | stb0899_i2c_gate_ctrl(&state->frontend, 0); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 156 | range = bandwidth - stb0899_carr_width(state) / 2; |
| 157 | } |
| 158 | |
| 159 | if (range > 0) |
Manu Abraham | b5d067b8 | 2009-01-27 11:03:16 -0300 | [diff] [blame] | 160 | internal->sub_range = min(internal->srch_range, range); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 161 | else |
| 162 | internal->sub_range = 0; |
| 163 | |
| 164 | internal->freq = params->freq; |
| 165 | internal->tuner_offst = 0L; |
| 166 | internal->sub_dir = 1; |
| 167 | } |
| 168 | |
| 169 | /* |
| 170 | * stb0899_check_tmg |
| 171 | * check for timing lock |
| 172 | * internal.Ttiming: time to wait for loop lock |
| 173 | */ |
| 174 | static enum stb0899_status stb0899_check_tmg(struct stb0899_state *state) |
| 175 | { |
| 176 | struct stb0899_internal *internal = &state->internal; |
Arvo Jarve | eadf29b | 2007-11-09 17:24:45 -0300 | [diff] [blame] | 177 | int lock; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 178 | u8 reg; |
Arvo Jarve | eadf29b | 2007-11-09 17:24:45 -0300 | [diff] [blame] | 179 | s8 timing; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 180 | |
Manu Abraham | b359325 | 2008-01-25 20:56:21 -0300 | [diff] [blame] | 181 | msleep(internal->t_derot); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 182 | |
Manu Abraham | 85eabac | 2008-01-25 20:28:46 -0300 | [diff] [blame] | 183 | stb0899_write_reg(state, STB0899_RTF, 0xf2); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 184 | reg = stb0899_read_reg(state, STB0899_TLIR); |
| 185 | lock = STB0899_GETFIELD(TLIR_TMG_LOCK_IND, reg); |
| 186 | timing = stb0899_read_reg(state, STB0899_RTF); |
| 187 | |
| 188 | if (lock >= 42) { |
Manu Abraham | b5d067b8 | 2009-01-27 11:03:16 -0300 | [diff] [blame] | 189 | if ((lock > 48) && (abs(timing) >= 110)) { |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 190 | internal->status = ANALOGCARRIER; |
| 191 | dprintk(state->verbose, FE_DEBUG, 1, "-->ANALOG Carrier !"); |
| 192 | } else { |
| 193 | internal->status = TIMINGOK; |
| 194 | dprintk(state->verbose, FE_DEBUG, 1, "------->TIMING OK !"); |
| 195 | } |
| 196 | } else { |
| 197 | internal->status = NOTIMING; |
| 198 | dprintk(state->verbose, FE_DEBUG, 1, "-->NO TIMING !"); |
| 199 | } |
| 200 | return internal->status; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * stb0899_search_tmg |
| 205 | * perform a fs/2 zig-zag to find timing |
| 206 | */ |
| 207 | static enum stb0899_status stb0899_search_tmg(struct stb0899_state *state) |
| 208 | { |
| 209 | struct stb0899_internal *internal = &state->internal; |
| 210 | struct stb0899_params *params = &state->params; |
| 211 | |
| 212 | short int derot_step, derot_freq = 0, derot_limit, next_loop = 3; |
| 213 | int index = 0; |
| 214 | u8 cfr[2]; |
| 215 | |
| 216 | internal->status = NOTIMING; |
| 217 | |
| 218 | /* timing loop computation & symbol rate optimisation */ |
| 219 | derot_limit = (internal->sub_range / 2L) / internal->mclk; |
| 220 | derot_step = (params->srate / 2L) / internal->mclk; |
| 221 | |
| 222 | while ((stb0899_check_tmg(state) != TIMINGOK) && next_loop) { |
| 223 | index++; |
| 224 | derot_freq += index * internal->direction * derot_step; /* next derot zig zag position */ |
| 225 | |
Manu Abraham | b5d067b8 | 2009-01-27 11:03:16 -0300 | [diff] [blame] | 226 | if (abs(derot_freq) > derot_limit) |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 227 | next_loop--; |
| 228 | |
| 229 | if (next_loop) { |
Reinhard Nißl | 25e529e | 2013-06-02 15:02:05 -0300 | [diff] [blame] | 230 | STB0899_SETFIELD_VAL(CFRM, cfr[0], MSB(internal->inversion * derot_freq)); |
| 231 | STB0899_SETFIELD_VAL(CFRL, cfr[1], LSB(internal->inversion * derot_freq)); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 232 | stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* derotator frequency */ |
| 233 | } |
| 234 | internal->direction = -internal->direction; /* Change zigzag direction */ |
| 235 | } |
| 236 | |
| 237 | if (internal->status == TIMINGOK) { |
| 238 | stb0899_read_regs(state, STB0899_CFRM, cfr, 2); /* get derotator frequency */ |
Reinhard Nißl | 25e529e | 2013-06-02 15:02:05 -0300 | [diff] [blame] | 239 | internal->derot_freq = internal->inversion * MAKEWORD16(cfr[0], cfr[1]); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 240 | dprintk(state->verbose, FE_DEBUG, 1, "------->TIMING OK ! Derot Freq = %d", internal->derot_freq); |
| 241 | } |
| 242 | |
| 243 | return internal->status; |
| 244 | } |
| 245 | |
| 246 | /* |
| 247 | * stb0899_check_carrier |
| 248 | * Check for carrier found |
| 249 | */ |
| 250 | static enum stb0899_status stb0899_check_carrier(struct stb0899_state *state) |
| 251 | { |
| 252 | struct stb0899_internal *internal = &state->internal; |
| 253 | u8 reg; |
| 254 | |
| 255 | msleep(internal->t_derot); /* wait for derotator ok */ |
| 256 | |
| 257 | reg = stb0899_read_reg(state, STB0899_CFD); |
| 258 | STB0899_SETFIELD_VAL(CFD_ON, reg, 1); |
Manu Abraham | 57ad94a | 2007-07-02 09:51:54 -0300 | [diff] [blame] | 259 | stb0899_write_reg(state, STB0899_CFD, reg); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 260 | |
| 261 | reg = stb0899_read_reg(state, STB0899_DSTATUS); |
| 262 | dprintk(state->verbose, FE_DEBUG, 1, "--------------------> STB0899_DSTATUS=[0x%02x]", reg); |
| 263 | if (STB0899_GETFIELD(CARRIER_FOUND, reg)) { |
| 264 | internal->status = CARRIEROK; |
| 265 | dprintk(state->verbose, FE_DEBUG, 1, "-------------> CARRIEROK !"); |
| 266 | } else { |
| 267 | internal->status = NOCARRIER; |
| 268 | dprintk(state->verbose, FE_DEBUG, 1, "-------------> NOCARRIER !"); |
| 269 | } |
| 270 | |
| 271 | return internal->status; |
| 272 | } |
| 273 | |
| 274 | /* |
| 275 | * stb0899_search_carrier |
| 276 | * Search for a QPSK carrier with the derotator |
| 277 | */ |
| 278 | static enum stb0899_status stb0899_search_carrier(struct stb0899_state *state) |
| 279 | { |
| 280 | struct stb0899_internal *internal = &state->internal; |
| 281 | |
| 282 | short int derot_freq = 0, last_derot_freq = 0, derot_limit, next_loop = 3; |
| 283 | int index = 0; |
| 284 | u8 cfr[2]; |
| 285 | u8 reg; |
| 286 | |
| 287 | internal->status = NOCARRIER; |
| 288 | derot_limit = (internal->sub_range / 2L) / internal->mclk; |
| 289 | derot_freq = internal->derot_freq; |
| 290 | |
| 291 | reg = stb0899_read_reg(state, STB0899_CFD); |
| 292 | STB0899_SETFIELD_VAL(CFD_ON, reg, 1); |
Manu Abraham | 57ad94a | 2007-07-02 09:51:54 -0300 | [diff] [blame] | 293 | stb0899_write_reg(state, STB0899_CFD, reg); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 294 | |
| 295 | do { |
| 296 | dprintk(state->verbose, FE_DEBUG, 1, "Derot Freq=%d, mclk=%d", derot_freq, internal->mclk); |
| 297 | if (stb0899_check_carrier(state) == NOCARRIER) { |
| 298 | index++; |
| 299 | last_derot_freq = derot_freq; |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 300 | derot_freq += index * internal->direction * internal->derot_step; /* next zig zag derotator position */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 301 | |
Manu Abraham | b5d067b8 | 2009-01-27 11:03:16 -0300 | [diff] [blame] | 302 | if(abs(derot_freq) > derot_limit) |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 303 | next_loop--; |
| 304 | |
| 305 | if (next_loop) { |
| 306 | reg = stb0899_read_reg(state, STB0899_CFD); |
| 307 | STB0899_SETFIELD_VAL(CFD_ON, reg, 1); |
Manu Abraham | 57ad94a | 2007-07-02 09:51:54 -0300 | [diff] [blame] | 308 | stb0899_write_reg(state, STB0899_CFD, reg); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 309 | |
Reinhard Nißl | 25e529e | 2013-06-02 15:02:05 -0300 | [diff] [blame] | 310 | STB0899_SETFIELD_VAL(CFRM, cfr[0], MSB(internal->inversion * derot_freq)); |
| 311 | STB0899_SETFIELD_VAL(CFRL, cfr[1], LSB(internal->inversion * derot_freq)); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 312 | stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* derotator frequency */ |
| 313 | } |
| 314 | } |
| 315 | |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 316 | internal->direction = -internal->direction; /* Change zigzag direction */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 317 | } while ((internal->status != CARRIEROK) && next_loop); |
| 318 | |
| 319 | if (internal->status == CARRIEROK) { |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 320 | stb0899_read_regs(state, STB0899_CFRM, cfr, 2); /* get derotator frequency */ |
Reinhard Nißl | 25e529e | 2013-06-02 15:02:05 -0300 | [diff] [blame] | 321 | internal->derot_freq = internal->inversion * MAKEWORD16(cfr[0], cfr[1]); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 322 | dprintk(state->verbose, FE_DEBUG, 1, "----> CARRIER OK !, Derot Freq=%d", internal->derot_freq); |
| 323 | } else { |
| 324 | internal->derot_freq = last_derot_freq; |
| 325 | } |
| 326 | |
| 327 | return internal->status; |
| 328 | } |
| 329 | |
| 330 | /* |
| 331 | * stb0899_check_data |
| 332 | * Check for data found |
| 333 | */ |
| 334 | static enum stb0899_status stb0899_check_data(struct stb0899_state *state) |
| 335 | { |
| 336 | struct stb0899_internal *internal = &state->internal; |
| 337 | struct stb0899_params *params = &state->params; |
| 338 | |
| 339 | int lock = 0, index = 0, dataTime = 500, loop; |
| 340 | u8 reg; |
| 341 | |
| 342 | internal->status = NODATA; |
| 343 | |
| 344 | /* RESET FEC */ |
| 345 | reg = stb0899_read_reg(state, STB0899_TSTRES); |
| 346 | STB0899_SETFIELD_VAL(FRESACS, reg, 1); |
| 347 | stb0899_write_reg(state, STB0899_TSTRES, reg); |
| 348 | msleep(1); |
| 349 | reg = stb0899_read_reg(state, STB0899_TSTRES); |
| 350 | STB0899_SETFIELD_VAL(FRESACS, reg, 0); |
| 351 | stb0899_write_reg(state, STB0899_TSTRES, reg); |
| 352 | |
| 353 | if (params->srate <= 2000000) |
| 354 | dataTime = 2000; |
| 355 | else if (params->srate <= 5000000) |
| 356 | dataTime = 1500; |
| 357 | else if (params->srate <= 15000000) |
| 358 | dataTime = 1000; |
| 359 | else |
| 360 | dataTime = 500; |
| 361 | |
Lutz Sammer | 39342db | 2011-10-07 16:11:37 -0300 | [diff] [blame] | 362 | /* clear previous failed END_LOOPVIT */ |
| 363 | stb0899_read_reg(state, STB0899_VSTATUS); |
| 364 | |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 365 | stb0899_write_reg(state, STB0899_DSTATUS2, 0x00); /* force search loop */ |
| 366 | while (1) { |
| 367 | /* WARNING! VIT LOCKED has to be tested before VIT_END_LOOOP */ |
| 368 | reg = stb0899_read_reg(state, STB0899_VSTATUS); |
| 369 | lock = STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg); |
| 370 | loop = STB0899_GETFIELD(VSTATUS_END_LOOPVIT, reg); |
| 371 | |
| 372 | if (lock || loop || (index > dataTime)) |
| 373 | break; |
| 374 | index++; |
| 375 | } |
| 376 | |
| 377 | if (lock) { /* DATA LOCK indicator */ |
| 378 | internal->status = DATAOK; |
| 379 | dprintk(state->verbose, FE_DEBUG, 1, "-----------------> DATA OK !"); |
| 380 | } |
| 381 | |
| 382 | return internal->status; |
| 383 | } |
| 384 | |
| 385 | /* |
| 386 | * stb0899_search_data |
| 387 | * Search for a QPSK carrier with the derotator |
| 388 | */ |
| 389 | static enum stb0899_status stb0899_search_data(struct stb0899_state *state) |
| 390 | { |
| 391 | short int derot_freq, derot_step, derot_limit, next_loop = 3; |
| 392 | u8 cfr[2]; |
| 393 | u8 reg; |
| 394 | int index = 1; |
| 395 | |
| 396 | struct stb0899_internal *internal = &state->internal; |
| 397 | struct stb0899_params *params = &state->params; |
| 398 | |
| 399 | derot_step = (params->srate / 4L) / internal->mclk; |
| 400 | derot_limit = (internal->sub_range / 2L) / internal->mclk; |
| 401 | derot_freq = internal->derot_freq; |
| 402 | |
| 403 | do { |
| 404 | if ((internal->status != CARRIEROK) || (stb0899_check_data(state) != DATAOK)) { |
| 405 | |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 406 | derot_freq += index * internal->direction * derot_step; /* next zig zag derotator position */ |
Manu Abraham | b5d067b8 | 2009-01-27 11:03:16 -0300 | [diff] [blame] | 407 | if (abs(derot_freq) > derot_limit) |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 408 | next_loop--; |
| 409 | |
| 410 | if (next_loop) { |
| 411 | dprintk(state->verbose, FE_DEBUG, 1, "Derot freq=%d, mclk=%d", derot_freq, internal->mclk); |
| 412 | reg = stb0899_read_reg(state, STB0899_CFD); |
| 413 | STB0899_SETFIELD_VAL(CFD_ON, reg, 1); |
Manu Abraham | 57ad94a | 2007-07-02 09:51:54 -0300 | [diff] [blame] | 414 | stb0899_write_reg(state, STB0899_CFD, reg); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 415 | |
Reinhard Nißl | 25e529e | 2013-06-02 15:02:05 -0300 | [diff] [blame] | 416 | STB0899_SETFIELD_VAL(CFRM, cfr[0], MSB(internal->inversion * derot_freq)); |
| 417 | STB0899_SETFIELD_VAL(CFRL, cfr[1], LSB(internal->inversion * derot_freq)); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 418 | stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* derotator frequency */ |
| 419 | |
| 420 | stb0899_check_carrier(state); |
| 421 | index++; |
| 422 | } |
| 423 | } |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 424 | internal->direction = -internal->direction; /* change zig zag direction */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 425 | } while ((internal->status != DATAOK) && next_loop); |
| 426 | |
| 427 | if (internal->status == DATAOK) { |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 428 | stb0899_read_regs(state, STB0899_CFRM, cfr, 2); /* get derotator frequency */ |
Reinhard Nißl | b71e2c4 | 2013-06-02 15:01:18 -0300 | [diff] [blame] | 429 | |
| 430 | /* store autodetected IQ swapping as default for DVB-S2 tuning */ |
| 431 | reg = stb0899_read_reg(state, STB0899_IQSWAP); |
| 432 | if (STB0899_GETFIELD(SYM, reg)) |
| 433 | internal->inversion = IQ_SWAP_ON; |
| 434 | else |
| 435 | internal->inversion = IQ_SWAP_OFF; |
| 436 | |
Reinhard Nißl | 25e529e | 2013-06-02 15:02:05 -0300 | [diff] [blame] | 437 | internal->derot_freq = internal->inversion * MAKEWORD16(cfr[0], cfr[1]); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 438 | dprintk(state->verbose, FE_DEBUG, 1, "------> DATAOK ! Derot Freq=%d", internal->derot_freq); |
| 439 | } |
| 440 | |
| 441 | return internal->status; |
| 442 | } |
| 443 | |
| 444 | /* |
| 445 | * stb0899_check_range |
| 446 | * check if the found frequency is in the correct range |
| 447 | */ |
| 448 | static enum stb0899_status stb0899_check_range(struct stb0899_state *state) |
| 449 | { |
| 450 | struct stb0899_internal *internal = &state->internal; |
| 451 | struct stb0899_params *params = &state->params; |
| 452 | |
| 453 | int range_offst, tp_freq; |
| 454 | |
| 455 | range_offst = internal->srch_range / 2000; |
Reinhard Nißl | 069ebbf | 2013-06-02 14:52:43 -0300 | [diff] [blame] | 456 | tp_freq = internal->freq - (internal->derot_freq * internal->mclk) / 1000; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 457 | |
| 458 | if ((tp_freq >= params->freq - range_offst) && (tp_freq <= params->freq + range_offst)) { |
| 459 | internal->status = RANGEOK; |
| 460 | dprintk(state->verbose, FE_DEBUG, 1, "----> RANGEOK !"); |
| 461 | } else { |
| 462 | internal->status = OUTOFRANGE; |
| 463 | dprintk(state->verbose, FE_DEBUG, 1, "----> OUT OF RANGE !"); |
| 464 | } |
| 465 | |
| 466 | return internal->status; |
| 467 | } |
| 468 | |
| 469 | /* |
| 470 | * NextSubRange |
| 471 | * Compute the next subrange of the search |
| 472 | */ |
| 473 | static void next_sub_range(struct stb0899_state *state) |
| 474 | { |
| 475 | struct stb0899_internal *internal = &state->internal; |
| 476 | struct stb0899_params *params = &state->params; |
| 477 | |
| 478 | long old_sub_range; |
| 479 | |
| 480 | if (internal->sub_dir > 0) { |
| 481 | old_sub_range = internal->sub_range; |
Manu Abraham | b5d067b8 | 2009-01-27 11:03:16 -0300 | [diff] [blame] | 482 | internal->sub_range = min((internal->srch_range / 2) - |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 483 | (internal->tuner_offst + internal->sub_range / 2), |
| 484 | internal->sub_range); |
| 485 | |
| 486 | if (internal->sub_range < 0) |
| 487 | internal->sub_range = 0; |
| 488 | |
| 489 | internal->tuner_offst += (old_sub_range + internal->sub_range) / 2; |
| 490 | } |
| 491 | |
| 492 | internal->freq = params->freq + (internal->sub_dir * internal->tuner_offst) / 1000; |
| 493 | internal->sub_dir = -internal->sub_dir; |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * stb0899_dvbs_algo |
| 498 | * Search for a signal, timing, carrier and data for a |
| 499 | * given frequency in a given range |
| 500 | */ |
| 501 | enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state) |
| 502 | { |
| 503 | struct stb0899_params *params = &state->params; |
| 504 | struct stb0899_internal *internal = &state->internal; |
| 505 | struct stb0899_config *config = state->config; |
| 506 | |
| 507 | u8 bclc, reg; |
Marko Schluessler | 7d8f1e5 | 2007-10-23 19:56:18 -0300 | [diff] [blame] | 508 | u8 cfr[2]; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 509 | u8 eq_const[10]; |
| 510 | s32 clnI = 3; |
| 511 | u32 bandwidth = 0; |
| 512 | |
| 513 | /* BETA values rated @ 99MHz */ |
| 514 | s32 betaTab[5][4] = { |
| 515 | /* 5 10 20 30MBps */ |
| 516 | { 37, 34, 32, 31 }, /* QPSK 1/2 */ |
| 517 | { 37, 35, 33, 31 }, /* QPSK 2/3 */ |
| 518 | { 37, 35, 33, 31 }, /* QPSK 3/4 */ |
| 519 | { 37, 36, 33, 32 }, /* QPSK 5/6 */ |
| 520 | { 37, 36, 33, 32 } /* QPSK 7/8 */ |
| 521 | }; |
| 522 | |
| 523 | internal->direction = 1; |
| 524 | |
| 525 | stb0899_set_srate(state, internal->master_clk, params->srate); |
| 526 | /* Carrier loop optimization versus symbol rate for acquisition*/ |
| 527 | if (params->srate <= 5000000) { |
| 528 | stb0899_write_reg(state, STB0899_ACLC, 0x89); |
| 529 | bclc = stb0899_read_reg(state, STB0899_BCLC); |
| 530 | STB0899_SETFIELD_VAL(BETA, bclc, 0x1c); |
| 531 | stb0899_write_reg(state, STB0899_BCLC, bclc); |
| 532 | clnI = 0; |
| 533 | } else if (params->srate <= 15000000) { |
| 534 | stb0899_write_reg(state, STB0899_ACLC, 0xc9); |
| 535 | bclc = stb0899_read_reg(state, STB0899_BCLC); |
| 536 | STB0899_SETFIELD_VAL(BETA, bclc, 0x22); |
| 537 | stb0899_write_reg(state, STB0899_BCLC, bclc); |
| 538 | clnI = 1; |
| 539 | } else if(params->srate <= 25000000) { |
| 540 | stb0899_write_reg(state, STB0899_ACLC, 0x89); |
| 541 | bclc = stb0899_read_reg(state, STB0899_BCLC); |
| 542 | STB0899_SETFIELD_VAL(BETA, bclc, 0x27); |
| 543 | stb0899_write_reg(state, STB0899_BCLC, bclc); |
| 544 | clnI = 2; |
| 545 | } else { |
| 546 | stb0899_write_reg(state, STB0899_ACLC, 0xc8); |
| 547 | bclc = stb0899_read_reg(state, STB0899_BCLC); |
| 548 | STB0899_SETFIELD_VAL(BETA, bclc, 0x29); |
| 549 | stb0899_write_reg(state, STB0899_BCLC, bclc); |
| 550 | clnI = 3; |
| 551 | } |
| 552 | |
| 553 | dprintk(state->verbose, FE_DEBUG, 1, "Set the timing loop to acquisition"); |
| 554 | /* Set the timing loop to acquisition */ |
| 555 | stb0899_write_reg(state, STB0899_RTC, 0x46); |
| 556 | stb0899_write_reg(state, STB0899_CFD, 0xee); |
| 557 | |
| 558 | /* !! WARNING !! |
| 559 | * Do not read any status variables while acquisition, |
| 560 | * If any needed, read before the acquisition starts |
| 561 | * querying status while acquiring causes the |
| 562 | * acquisition to go bad and hence no locks. |
| 563 | */ |
| 564 | dprintk(state->verbose, FE_DEBUG, 1, "Derot Percent=%d Srate=%d mclk=%d", |
| 565 | internal->derot_percent, params->srate, internal->mclk); |
| 566 | |
| 567 | /* Initial calculations */ |
| 568 | internal->derot_step = internal->derot_percent * (params->srate / 1000L) / internal->mclk; /* DerotStep/1000 * Fsymbol */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 569 | internal->t_derot = stb0899_calc_derot_time(params->srate); |
| 570 | internal->t_data = 500; |
| 571 | |
| 572 | dprintk(state->verbose, FE_DEBUG, 1, "RESET stream merger"); |
| 573 | /* RESET Stream merger */ |
| 574 | reg = stb0899_read_reg(state, STB0899_TSTRES); |
| 575 | STB0899_SETFIELD_VAL(FRESRS, reg, 1); |
| 576 | stb0899_write_reg(state, STB0899_TSTRES, reg); |
| 577 | |
| 578 | /* |
| 579 | * Set KDIVIDER to an intermediate value between |
| 580 | * 1/2 and 7/8 for acquisition |
| 581 | */ |
| 582 | reg = stb0899_read_reg(state, STB0899_DEMAPVIT); |
| 583 | STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 60); |
| 584 | stb0899_write_reg(state, STB0899_DEMAPVIT, reg); |
| 585 | |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 586 | stb0899_write_reg(state, STB0899_EQON, 0x01); /* Equalizer OFF while acquiring */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 587 | stb0899_write_reg(state, STB0899_VITSYNC, 0x19); |
| 588 | |
| 589 | stb0899_first_subrange(state); |
| 590 | do { |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 591 | /* Initialisations */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 592 | cfr[0] = cfr[1] = 0; |
| 593 | stb0899_write_regs(state, STB0899_CFRM, cfr, 2); /* RESET derotator frequency */ |
| 594 | |
Manu Abraham | 85eabac | 2008-01-25 20:28:46 -0300 | [diff] [blame] | 595 | stb0899_write_reg(state, STB0899_RTF, 0); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 596 | reg = stb0899_read_reg(state, STB0899_CFD); |
| 597 | STB0899_SETFIELD_VAL(CFD_ON, reg, 1); |
Manu Abraham | 57ad94a | 2007-07-02 09:51:54 -0300 | [diff] [blame] | 598 | stb0899_write_reg(state, STB0899_CFD, reg); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 599 | |
| 600 | internal->derot_freq = 0; |
| 601 | internal->status = NOAGC1; |
| 602 | |
Manu Abraham | 40e8ce3 | 2008-02-03 19:37:02 -0300 | [diff] [blame] | 603 | /* enable tuner I/O */ |
| 604 | stb0899_i2c_gate_ctrl(&state->frontend, 1); |
| 605 | |
Manu Abraham | 3f40092 | 2008-10-26 18:28:52 -0300 | [diff] [blame] | 606 | /* Move tuner to frequency */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 607 | dprintk(state->verbose, FE_DEBUG, 1, "Tuner set frequency"); |
| 608 | if (state->config->tuner_set_frequency) |
| 609 | state->config->tuner_set_frequency(&state->frontend, internal->freq); |
| 610 | |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 611 | if (state->config->tuner_get_frequency) |
| 612 | state->config->tuner_get_frequency(&state->frontend, &internal->freq); |
| 613 | |
Manu Abraham | b359325 | 2008-01-25 20:56:21 -0300 | [diff] [blame] | 614 | msleep(internal->t_agc1 + internal->t_agc2 + internal->t_derot); /* AGC1, AGC2 and timing loop */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 615 | dprintk(state->verbose, FE_DEBUG, 1, "current derot freq=%d", internal->derot_freq); |
| 616 | internal->status = AGC1OK; |
| 617 | |
| 618 | /* There is signal in the band */ |
| 619 | if (config->tuner_get_bandwidth) |
| 620 | config->tuner_get_bandwidth(&state->frontend, &bandwidth); |
Manu Abraham | 40e8ce3 | 2008-02-03 19:37:02 -0300 | [diff] [blame] | 621 | |
| 622 | /* disable tuner I/O */ |
| 623 | stb0899_i2c_gate_ctrl(&state->frontend, 0); |
| 624 | |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 625 | if (params->srate <= bandwidth / 2) |
| 626 | stb0899_search_tmg(state); /* For low rates (SCPC) */ |
| 627 | else |
| 628 | stb0899_check_tmg(state); /* For high rates (MCPC) */ |
| 629 | |
| 630 | if (internal->status == TIMINGOK) { |
| 631 | dprintk(state->verbose, FE_DEBUG, 1, |
| 632 | "TIMING OK ! Derot freq=%d, mclk=%d", |
| 633 | internal->derot_freq, internal->mclk); |
| 634 | |
| 635 | if (stb0899_search_carrier(state) == CARRIEROK) { /* Search for carrier */ |
| 636 | dprintk(state->verbose, FE_DEBUG, 1, |
| 637 | "CARRIER OK ! Derot freq=%d, mclk=%d", |
| 638 | internal->derot_freq, internal->mclk); |
| 639 | |
| 640 | if (stb0899_search_data(state) == DATAOK) { /* Check for data */ |
| 641 | dprintk(state->verbose, FE_DEBUG, 1, |
| 642 | "DATA OK ! Derot freq=%d, mclk=%d", |
| 643 | internal->derot_freq, internal->mclk); |
| 644 | |
| 645 | if (stb0899_check_range(state) == RANGEOK) { |
| 646 | dprintk(state->verbose, FE_DEBUG, 1, |
| 647 | "RANGE OK ! derot freq=%d, mclk=%d", |
| 648 | internal->derot_freq, internal->mclk); |
| 649 | |
Reinhard Nißl | 069ebbf | 2013-06-02 14:52:43 -0300 | [diff] [blame] | 650 | internal->freq = params->freq - ((internal->derot_freq * internal->mclk) / 1000); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 651 | reg = stb0899_read_reg(state, STB0899_PLPARM); |
| 652 | internal->fecrate = STB0899_GETFIELD(VITCURPUN, reg); |
| 653 | dprintk(state->verbose, FE_DEBUG, 1, |
| 654 | "freq=%d, internal resultant freq=%d", |
| 655 | params->freq, internal->freq); |
| 656 | |
| 657 | dprintk(state->verbose, FE_DEBUG, 1, |
| 658 | "internal puncture rate=%d", |
| 659 | internal->fecrate); |
| 660 | } |
| 661 | } |
| 662 | } |
| 663 | } |
| 664 | if (internal->status != RANGEOK) |
| 665 | next_sub_range(state); |
| 666 | |
| 667 | } while (internal->sub_range && internal->status != RANGEOK); |
| 668 | |
| 669 | /* Set the timing loop to tracking */ |
| 670 | stb0899_write_reg(state, STB0899_RTC, 0x33); |
| 671 | stb0899_write_reg(state, STB0899_CFD, 0xf7); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 672 | /* if locked and range ok, set Kdiv */ |
| 673 | if (internal->status == RANGEOK) { |
| 674 | dprintk(state->verbose, FE_DEBUG, 1, "Locked & Range OK !"); |
| 675 | stb0899_write_reg(state, STB0899_EQON, 0x41); /* Equalizer OFF while acquiring */ |
| 676 | stb0899_write_reg(state, STB0899_VITSYNC, 0x39); /* SN to b'11 for acquisition */ |
| 677 | |
| 678 | /* |
| 679 | * Carrier loop optimization versus |
| 680 | * symbol Rate/Puncture Rate for Tracking |
| 681 | */ |
Arvo Jarve | b655b6c | 2007-10-30 09:16:17 -0300 | [diff] [blame] | 682 | reg = stb0899_read_reg(state, STB0899_BCLC); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 683 | switch (internal->fecrate) { |
| 684 | case STB0899_FEC_1_2: /* 13 */ |
Arvo Jarve | b655b6c | 2007-10-30 09:16:17 -0300 | [diff] [blame] | 685 | stb0899_write_reg(state, STB0899_DEMAPVIT, 0x1a); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 686 | STB0899_SETFIELD_VAL(BETA, reg, betaTab[0][clnI]); |
| 687 | stb0899_write_reg(state, STB0899_BCLC, reg); |
| 688 | break; |
| 689 | case STB0899_FEC_2_3: /* 18 */ |
Arvo Jarve | b655b6c | 2007-10-30 09:16:17 -0300 | [diff] [blame] | 690 | stb0899_write_reg(state, STB0899_DEMAPVIT, 44); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 691 | STB0899_SETFIELD_VAL(BETA, reg, betaTab[1][clnI]); |
| 692 | stb0899_write_reg(state, STB0899_BCLC, reg); |
| 693 | break; |
| 694 | case STB0899_FEC_3_4: /* 21 */ |
Arvo Jarve | b655b6c | 2007-10-30 09:16:17 -0300 | [diff] [blame] | 695 | stb0899_write_reg(state, STB0899_DEMAPVIT, 60); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 696 | STB0899_SETFIELD_VAL(BETA, reg, betaTab[2][clnI]); |
| 697 | stb0899_write_reg(state, STB0899_BCLC, reg); |
| 698 | break; |
| 699 | case STB0899_FEC_5_6: /* 24 */ |
Arvo Jarve | b655b6c | 2007-10-30 09:16:17 -0300 | [diff] [blame] | 700 | stb0899_write_reg(state, STB0899_DEMAPVIT, 75); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 701 | STB0899_SETFIELD_VAL(BETA, reg, betaTab[3][clnI]); |
| 702 | stb0899_write_reg(state, STB0899_BCLC, reg); |
| 703 | break; |
| 704 | case STB0899_FEC_6_7: /* 25 */ |
Arvo Jarve | b655b6c | 2007-10-30 09:16:17 -0300 | [diff] [blame] | 705 | stb0899_write_reg(state, STB0899_DEMAPVIT, 88); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 706 | stb0899_write_reg(state, STB0899_ACLC, 0x88); |
| 707 | stb0899_write_reg(state, STB0899_BCLC, 0x9a); |
| 708 | break; |
| 709 | case STB0899_FEC_7_8: /* 26 */ |
Arvo Jarve | b655b6c | 2007-10-30 09:16:17 -0300 | [diff] [blame] | 710 | stb0899_write_reg(state, STB0899_DEMAPVIT, 94); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 711 | STB0899_SETFIELD_VAL(BETA, reg, betaTab[4][clnI]); |
| 712 | stb0899_write_reg(state, STB0899_BCLC, reg); |
| 713 | break; |
| 714 | default: |
| 715 | dprintk(state->verbose, FE_DEBUG, 1, "Unsupported Puncture Rate"); |
| 716 | break; |
| 717 | } |
| 718 | /* release stream merger RESET */ |
| 719 | reg = stb0899_read_reg(state, STB0899_TSTRES); |
| 720 | STB0899_SETFIELD_VAL(FRESRS, reg, 0); |
| 721 | stb0899_write_reg(state, STB0899_TSTRES, reg); |
| 722 | |
| 723 | /* disable carrier detector */ |
| 724 | reg = stb0899_read_reg(state, STB0899_CFD); |
| 725 | STB0899_SETFIELD_VAL(CFD_ON, reg, 0); |
Manu Abraham | 57ad94a | 2007-07-02 09:51:54 -0300 | [diff] [blame] | 726 | stb0899_write_reg(state, STB0899_CFD, reg); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 727 | |
| 728 | stb0899_read_regs(state, STB0899_EQUAI1, eq_const, 10); |
| 729 | } |
| 730 | |
| 731 | return internal->status; |
| 732 | } |
| 733 | |
| 734 | /* |
| 735 | * stb0899_dvbs2_config_uwp |
| 736 | * Configure UWP state machine |
| 737 | */ |
| 738 | static void stb0899_dvbs2_config_uwp(struct stb0899_state *state) |
| 739 | { |
| 740 | struct stb0899_internal *internal = &state->internal; |
| 741 | struct stb0899_config *config = state->config; |
| 742 | u32 uwp1, uwp2, uwp3, reg; |
| 743 | |
| 744 | uwp1 = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1); |
| 745 | uwp2 = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL2); |
| 746 | uwp3 = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL3); |
| 747 | |
| 748 | STB0899_SETFIELD_VAL(UWP_ESN0_AVE, uwp1, config->esno_ave); |
| 749 | STB0899_SETFIELD_VAL(UWP_ESN0_QUANT, uwp1, config->esno_quant); |
| 750 | STB0899_SETFIELD_VAL(UWP_TH_SOF, uwp1, config->uwp_threshold_sof); |
| 751 | |
| 752 | STB0899_SETFIELD_VAL(FE_COARSE_TRK, uwp2, internal->av_frame_coarse); |
| 753 | STB0899_SETFIELD_VAL(FE_FINE_TRK, uwp2, internal->av_frame_fine); |
| 754 | STB0899_SETFIELD_VAL(UWP_MISS_TH, uwp2, config->miss_threshold); |
| 755 | |
| 756 | STB0899_SETFIELD_VAL(UWP_TH_ACQ, uwp3, config->uwp_threshold_acq); |
| 757 | STB0899_SETFIELD_VAL(UWP_TH_TRACK, uwp3, config->uwp_threshold_track); |
| 758 | |
| 759 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_UWP_CNTRL1, STB0899_OFF0_UWP_CNTRL1, uwp1); |
| 760 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_UWP_CNTRL2, STB0899_OFF0_UWP_CNTRL2, uwp2); |
| 761 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_UWP_CNTRL3, STB0899_OFF0_UWP_CNTRL3, uwp3); |
| 762 | |
| 763 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, SOF_SRCH_TO); |
| 764 | STB0899_SETFIELD_VAL(SOF_SEARCH_TIMEOUT, reg, config->sof_search_timeout); |
| 765 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_SOF_SRCH_TO, STB0899_OFF0_SOF_SRCH_TO, reg); |
| 766 | } |
| 767 | |
| 768 | /* |
| 769 | * stb0899_dvbs2_config_csm_auto |
| 770 | * Set CSM to AUTO mode |
| 771 | */ |
| 772 | static void stb0899_dvbs2_config_csm_auto(struct stb0899_state *state) |
| 773 | { |
| 774 | u32 reg; |
| 775 | |
| 776 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); |
| 777 | STB0899_SETFIELD_VAL(CSM_AUTO_PARAM, reg, 1); |
| 778 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, reg); |
| 779 | } |
| 780 | |
Mauro Carvalho Chehab | ffbc5f8 | 2009-01-05 01:34:20 -0300 | [diff] [blame] | 781 | static long Log2Int(int number) |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 782 | { |
| 783 | int i; |
| 784 | |
| 785 | i = 0; |
Manu Abraham | b5d067b8 | 2009-01-27 11:03:16 -0300 | [diff] [blame] | 786 | while ((1 << i) <= abs(number)) |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 787 | i++; |
| 788 | |
| 789 | if (number == 0) |
| 790 | i = 1; |
| 791 | |
| 792 | return i - 1; |
| 793 | } |
| 794 | |
| 795 | /* |
| 796 | * stb0899_dvbs2_calc_srate |
| 797 | * compute BTR_NOM_FREQ for the symbol rate |
| 798 | */ |
| 799 | static u32 stb0899_dvbs2_calc_srate(struct stb0899_state *state) |
| 800 | { |
| 801 | struct stb0899_internal *internal = &state->internal; |
| 802 | struct stb0899_config *config = state->config; |
| 803 | |
| 804 | u32 dec_ratio, dec_rate, decim, remain, intval, btr_nom_freq; |
| 805 | u32 master_clk, srate; |
| 806 | |
| 807 | dec_ratio = (internal->master_clk * 2) / (5 * internal->srate); |
| 808 | dec_ratio = (dec_ratio == 0) ? 1 : dec_ratio; |
| 809 | dec_rate = Log2Int(dec_ratio); |
| 810 | decim = 1 << dec_rate; |
| 811 | master_clk = internal->master_clk / 1000; |
| 812 | srate = internal->srate / 1000; |
| 813 | |
| 814 | if (decim <= 4) { |
| 815 | intval = (decim * (1 << (config->btr_nco_bits - 1))) / master_clk; |
| 816 | remain = (decim * (1 << (config->btr_nco_bits - 1))) % master_clk; |
| 817 | } else { |
| 818 | intval = (1 << (config->btr_nco_bits - 1)) / (master_clk / 100) * decim / 100; |
| 819 | remain = (decim * (1 << (config->btr_nco_bits - 1))) % master_clk; |
| 820 | } |
| 821 | btr_nom_freq = (intval * srate) + ((remain * srate) / master_clk); |
| 822 | |
| 823 | return btr_nom_freq; |
| 824 | } |
| 825 | |
| 826 | /* |
| 827 | * stb0899_dvbs2_calc_dev |
| 828 | * compute the correction to be applied to symbol rate |
| 829 | */ |
| 830 | static u32 stb0899_dvbs2_calc_dev(struct stb0899_state *state) |
| 831 | { |
| 832 | struct stb0899_internal *internal = &state->internal; |
| 833 | u32 dec_ratio, correction, master_clk, srate; |
| 834 | |
| 835 | dec_ratio = (internal->master_clk * 2) / (5 * internal->srate); |
| 836 | dec_ratio = (dec_ratio == 0) ? 1 : dec_ratio; |
| 837 | |
| 838 | master_clk = internal->master_clk / 1000; /* for integer Caculation*/ |
| 839 | srate = internal->srate / 1000; /* for integer Caculation*/ |
| 840 | correction = (512 * master_clk) / (2 * dec_ratio * srate); |
| 841 | |
| 842 | return correction; |
| 843 | } |
| 844 | |
| 845 | /* |
| 846 | * stb0899_dvbs2_set_srate |
| 847 | * Set DVBS2 symbol rate |
| 848 | */ |
| 849 | static void stb0899_dvbs2_set_srate(struct stb0899_state *state) |
| 850 | { |
| 851 | struct stb0899_internal *internal = &state->internal; |
| 852 | |
| 853 | u32 dec_ratio, dec_rate, win_sel, decim, f_sym, btr_nom_freq; |
| 854 | u32 correction, freq_adj, band_lim, decim_cntrl, reg; |
| 855 | u8 anti_alias; |
| 856 | |
| 857 | /*set decimation to 1*/ |
| 858 | dec_ratio = (internal->master_clk * 2) / (5 * internal->srate); |
| 859 | dec_ratio = (dec_ratio == 0) ? 1 : dec_ratio; |
| 860 | dec_rate = Log2Int(dec_ratio); |
| 861 | |
| 862 | win_sel = 0; |
| 863 | if (dec_rate >= 5) |
| 864 | win_sel = dec_rate - 4; |
| 865 | |
| 866 | decim = (1 << dec_rate); |
| 867 | /* (FSamp/Fsymbol *100) for integer Caculation */ |
| 868 | f_sym = internal->master_clk / ((decim * internal->srate) / 1000); |
| 869 | |
| 870 | if (f_sym <= 2250) /* don't band limit signal going into btr block*/ |
| 871 | band_lim = 1; |
| 872 | else |
| 873 | band_lim = 0; /* band limit signal going into btr block*/ |
| 874 | |
| 875 | decim_cntrl = ((win_sel << 3) & 0x18) + ((band_lim << 5) & 0x20) + (dec_rate & 0x7); |
| 876 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_DECIM_CNTRL, STB0899_OFF0_DECIM_CNTRL, decim_cntrl); |
| 877 | |
| 878 | if (f_sym <= 3450) |
| 879 | anti_alias = 0; |
| 880 | else if (f_sym <= 4250) |
| 881 | anti_alias = 1; |
| 882 | else |
| 883 | anti_alias = 2; |
| 884 | |
| 885 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_ANTI_ALIAS_SEL, STB0899_OFF0_ANTI_ALIAS_SEL, anti_alias); |
| 886 | btr_nom_freq = stb0899_dvbs2_calc_srate(state); |
| 887 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_NOM_FREQ, STB0899_OFF0_BTR_NOM_FREQ, btr_nom_freq); |
| 888 | |
| 889 | correction = stb0899_dvbs2_calc_dev(state); |
| 890 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, BTR_CNTRL); |
| 891 | STB0899_SETFIELD_VAL(BTR_FREQ_CORR, reg, correction); |
| 892 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_CNTRL, STB0899_OFF0_BTR_CNTRL, reg); |
| 893 | |
| 894 | /* scale UWP+CSM frequency to sample rate*/ |
| 895 | freq_adj = internal->srate / (internal->master_clk / 4096); |
| 896 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_FREQ_ADJ_SCALE, STB0899_OFF0_FREQ_ADJ_SCALE, freq_adj); |
| 897 | } |
| 898 | |
| 899 | /* |
| 900 | * stb0899_dvbs2_set_btr_loopbw |
| 901 | * set bit timing loop bandwidth as a percentage of the symbol rate |
| 902 | */ |
| 903 | static void stb0899_dvbs2_set_btr_loopbw(struct stb0899_state *state) |
| 904 | { |
| 905 | struct stb0899_internal *internal = &state->internal; |
| 906 | struct stb0899_config *config = state->config; |
| 907 | |
| 908 | u32 sym_peak = 23, zeta = 707, loopbw_percent = 60; |
| 909 | s32 dec_ratio, dec_rate, k_btr1_rshft, k_btr1, k_btr0_rshft; |
| 910 | s32 k_btr0, k_btr2_rshft, k_direct_shift, k_indirect_shift; |
| 911 | u32 decim, K, wn, k_direct, k_indirect; |
| 912 | u32 reg; |
| 913 | |
| 914 | dec_ratio = (internal->master_clk * 2) / (5 * internal->srate); |
| 915 | dec_ratio = (dec_ratio == 0) ? 1 : dec_ratio; |
| 916 | dec_rate = Log2Int(dec_ratio); |
| 917 | decim = (1 << dec_rate); |
| 918 | |
| 919 | sym_peak *= 576000; |
| 920 | K = (1 << config->btr_nco_bits) / (internal->master_clk / 1000); |
| 921 | K *= (internal->srate / 1000000) * decim; /*k=k 10^-8*/ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 922 | |
| 923 | if (K != 0) { |
Manu Abraham | b797c20 | 2007-02-24 09:14:39 -0300 | [diff] [blame] | 924 | K = sym_peak / K; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 925 | wn = (4 * zeta * zeta) + 1000000; |
| 926 | wn = (2 * (loopbw_percent * 1000) * 40 * zeta) /wn; /*wn =wn 10^-8*/ |
| 927 | |
| 928 | k_indirect = (wn * wn) / K; |
| 929 | k_indirect = k_indirect; /*kindirect = kindirect 10^-6*/ |
| 930 | k_direct = (2 * wn * zeta) / K; /*kDirect = kDirect 10^-2*/ |
| 931 | k_direct *= 100; |
| 932 | |
| 933 | k_direct_shift = Log2Int(k_direct) - Log2Int(10000) - 2; |
| 934 | k_btr1_rshft = (-1 * k_direct_shift) + config->btr_gain_shift_offset; |
| 935 | k_btr1 = k_direct / (1 << k_direct_shift); |
| 936 | k_btr1 /= 10000; |
| 937 | |
| 938 | k_indirect_shift = Log2Int(k_indirect + 15) - 20 /*- 2*/; |
| 939 | k_btr0_rshft = (-1 * k_indirect_shift) + config->btr_gain_shift_offset; |
| 940 | k_btr0 = k_indirect * (1 << (-k_indirect_shift)); |
| 941 | k_btr0 /= 1000000; |
| 942 | |
| 943 | k_btr2_rshft = 0; |
| 944 | if (k_btr0_rshft > 15) { |
| 945 | k_btr2_rshft = k_btr0_rshft - 15; |
| 946 | k_btr0_rshft = 15; |
| 947 | } |
| 948 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, BTR_LOOP_GAIN); |
| 949 | STB0899_SETFIELD_VAL(KBTR0_RSHFT, reg, k_btr0_rshft); |
| 950 | STB0899_SETFIELD_VAL(KBTR0, reg, k_btr0); |
| 951 | STB0899_SETFIELD_VAL(KBTR1_RSHFT, reg, k_btr1_rshft); |
| 952 | STB0899_SETFIELD_VAL(KBTR1, reg, k_btr1); |
| 953 | STB0899_SETFIELD_VAL(KBTR2_RSHFT, reg, k_btr2_rshft); |
| 954 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_LOOP_GAIN, STB0899_OFF0_BTR_LOOP_GAIN, reg); |
| 955 | } else |
| 956 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_LOOP_GAIN, STB0899_OFF0_BTR_LOOP_GAIN, 0xc4c4f); |
| 957 | } |
| 958 | |
| 959 | /* |
| 960 | * stb0899_dvbs2_set_carr_freq |
| 961 | * set nominal frequency for carrier search |
| 962 | */ |
| 963 | static void stb0899_dvbs2_set_carr_freq(struct stb0899_state *state, s32 carr_freq, u32 master_clk) |
| 964 | { |
| 965 | struct stb0899_config *config = state->config; |
| 966 | s32 crl_nom_freq; |
| 967 | u32 reg; |
| 968 | |
| 969 | crl_nom_freq = (1 << config->crl_nco_bits) / master_clk; |
| 970 | crl_nom_freq *= carr_freq; |
| 971 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_NOM_FREQ); |
| 972 | STB0899_SETFIELD_VAL(CRL_NOM_FREQ, reg, crl_nom_freq); |
| 973 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_NOM_FREQ, STB0899_OFF0_CRL_NOM_FREQ, reg); |
| 974 | } |
| 975 | |
| 976 | /* |
| 977 | * stb0899_dvbs2_init_calc |
| 978 | * Initialize DVBS2 UWP, CSM, carrier and timing loops |
| 979 | */ |
| 980 | static void stb0899_dvbs2_init_calc(struct stb0899_state *state) |
| 981 | { |
| 982 | struct stb0899_internal *internal = &state->internal; |
| 983 | s32 steps, step_size; |
| 984 | u32 range, reg; |
| 985 | |
| 986 | /* config uwp and csm */ |
| 987 | stb0899_dvbs2_config_uwp(state); |
| 988 | stb0899_dvbs2_config_csm_auto(state); |
| 989 | |
| 990 | /* initialize BTR */ |
| 991 | stb0899_dvbs2_set_srate(state); |
| 992 | stb0899_dvbs2_set_btr_loopbw(state); |
| 993 | |
| 994 | if (internal->srate / 1000000 >= 15) |
| 995 | step_size = (1 << 17) / 5; |
| 996 | else if (internal->srate / 1000000 >= 10) |
| 997 | step_size = (1 << 17) / 7; |
| 998 | else if (internal->srate / 1000000 >= 5) |
| 999 | step_size = (1 << 17) / 10; |
| 1000 | else |
| 1001 | step_size = (1 << 17) / 4; |
| 1002 | |
| 1003 | range = internal->srch_range / 1000000; |
| 1004 | steps = (10 * range * (1 << 17)) / (step_size * (internal->srate / 1000000)); |
| 1005 | steps = (steps + 6) / 10; |
| 1006 | steps = (steps == 0) ? 1 : steps; |
| 1007 | if (steps % 2 == 0) |
| 1008 | stb0899_dvbs2_set_carr_freq(state, internal->center_freq - |
| 1009 | (internal->step_size * (internal->srate / 20000000)), |
| 1010 | (internal->master_clk) / 1000000); |
| 1011 | else |
| 1012 | stb0899_dvbs2_set_carr_freq(state, internal->center_freq, (internal->master_clk) / 1000000); |
| 1013 | |
| 1014 | /*Set Carrier Search params (zigzag, num steps and freq step size*/ |
| 1015 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, ACQ_CNTRL2); |
| 1016 | STB0899_SETFIELD_VAL(ZIGZAG, reg, 1); |
| 1017 | STB0899_SETFIELD_VAL(NUM_STEPS, reg, steps); |
| 1018 | STB0899_SETFIELD_VAL(FREQ_STEPSIZE, reg, step_size); |
| 1019 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_ACQ_CNTRL2, STB0899_OFF0_ACQ_CNTRL2, reg); |
| 1020 | } |
| 1021 | |
| 1022 | /* |
| 1023 | * stb0899_dvbs2_btr_init |
| 1024 | * initialize the timing loop |
| 1025 | */ |
| 1026 | static void stb0899_dvbs2_btr_init(struct stb0899_state *state) |
| 1027 | { |
| 1028 | u32 reg; |
| 1029 | |
| 1030 | /* set enable BTR loopback */ |
| 1031 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, BTR_CNTRL); |
| 1032 | STB0899_SETFIELD_VAL(INTRP_PHS_SENSE, reg, 1); |
| 1033 | STB0899_SETFIELD_VAL(BTR_ERR_ENA, reg, 1); |
| 1034 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_CNTRL, STB0899_OFF0_BTR_CNTRL, reg); |
| 1035 | |
| 1036 | /* fix btr freq accum at 0 */ |
| 1037 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_FREQ_INIT, STB0899_OFF0_BTR_FREQ_INIT, 0x10000000); |
| 1038 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_FREQ_INIT, STB0899_OFF0_BTR_FREQ_INIT, 0x00000000); |
| 1039 | |
| 1040 | /* fix btr freq accum at 0 */ |
| 1041 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_PHS_INIT, STB0899_OFF0_BTR_PHS_INIT, 0x10000000); |
| 1042 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_BTR_PHS_INIT, STB0899_OFF0_BTR_PHS_INIT, 0x00000000); |
| 1043 | } |
| 1044 | |
| 1045 | /* |
| 1046 | * stb0899_dvbs2_reacquire |
| 1047 | * trigger a DVB-S2 acquisition |
| 1048 | */ |
| 1049 | static void stb0899_dvbs2_reacquire(struct stb0899_state *state) |
| 1050 | { |
| 1051 | u32 reg = 0; |
| 1052 | |
| 1053 | /* demod soft reset */ |
| 1054 | STB0899_SETFIELD_VAL(DVBS2_RESET, reg, 1); |
| 1055 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_RESET_CNTRL, STB0899_OFF0_RESET_CNTRL, reg); |
| 1056 | |
| 1057 | /*Reset Timing Loop */ |
| 1058 | stb0899_dvbs2_btr_init(state); |
| 1059 | |
| 1060 | /* reset Carrier loop */ |
| 1061 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_FREQ_INIT, STB0899_OFF0_CRL_FREQ_INIT, (1 << 30)); |
| 1062 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_FREQ_INIT, STB0899_OFF0_CRL_FREQ_INIT, 0); |
| 1063 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_LOOP_GAIN, STB0899_OFF0_CRL_LOOP_GAIN, 0); |
| 1064 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_PHS_INIT, STB0899_OFF0_CRL_PHS_INIT, (1 << 30)); |
| 1065 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_PHS_INIT, STB0899_OFF0_CRL_PHS_INIT, 0); |
| 1066 | |
| 1067 | /*release demod soft reset */ |
| 1068 | reg = 0; |
| 1069 | STB0899_SETFIELD_VAL(DVBS2_RESET, reg, 0); |
| 1070 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_RESET_CNTRL, STB0899_OFF0_RESET_CNTRL, reg); |
| 1071 | |
| 1072 | /* start acquisition process */ |
| 1073 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_ACQUIRE_TRIG, STB0899_OFF0_ACQUIRE_TRIG, 1); |
| 1074 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_LOCK_LOST, STB0899_OFF0_LOCK_LOST, 0); |
| 1075 | |
| 1076 | /* equalizer Init */ |
| 1077 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQUALIZER_INIT, STB0899_OFF0_EQUALIZER_INIT, 1); |
| 1078 | |
| 1079 | /*Start equilizer */ |
| 1080 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQUALIZER_INIT, STB0899_OFF0_EQUALIZER_INIT, 0); |
| 1081 | |
| 1082 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, EQ_CNTRL); |
| 1083 | STB0899_SETFIELD_VAL(EQ_SHIFT, reg, 0); |
| 1084 | STB0899_SETFIELD_VAL(EQ_DISABLE_UPDATE, reg, 0); |
| 1085 | STB0899_SETFIELD_VAL(EQ_DELAY, reg, 0x05); |
| 1086 | STB0899_SETFIELD_VAL(EQ_ADAPT_MODE, reg, 0x01); |
| 1087 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQ_CNTRL, STB0899_OFF0_EQ_CNTRL, reg); |
| 1088 | |
| 1089 | /* RESET Packet delineator */ |
| 1090 | stb0899_write_reg(state, STB0899_PDELCTRL, 0x4a); |
| 1091 | } |
| 1092 | |
| 1093 | /* |
| 1094 | * stb0899_dvbs2_get_dmd_status |
| 1095 | * get DVB-S2 Demod LOCK status |
| 1096 | */ |
| 1097 | static enum stb0899_status stb0899_dvbs2_get_dmd_status(struct stb0899_state *state, int timeout) |
| 1098 | { |
| 1099 | int time = -10, lock = 0, uwp, csm; |
| 1100 | u32 reg; |
| 1101 | |
| 1102 | do { |
| 1103 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STATUS); |
| 1104 | dprintk(state->verbose, FE_DEBUG, 1, "DMD_STATUS=[0x%02x]", reg); |
| 1105 | if (STB0899_GETFIELD(IF_AGC_LOCK, reg)) |
| 1106 | dprintk(state->verbose, FE_DEBUG, 1, "------------->IF AGC LOCKED !"); |
| 1107 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2); |
| 1108 | dprintk(state->verbose, FE_DEBUG, 1, "----------->DMD STAT2=[0x%02x]", reg); |
| 1109 | uwp = STB0899_GETFIELD(UWP_LOCK, reg); |
| 1110 | csm = STB0899_GETFIELD(CSM_LOCK, reg); |
| 1111 | if (uwp && csm) |
| 1112 | lock = 1; |
| 1113 | |
| 1114 | time += 10; |
| 1115 | msleep(10); |
| 1116 | |
| 1117 | } while ((!lock) && (time <= timeout)); |
| 1118 | |
| 1119 | if (lock) { |
| 1120 | dprintk(state->verbose, FE_DEBUG, 1, "----------------> DVB-S2 LOCK !"); |
| 1121 | return DVBS2_DEMOD_LOCK; |
| 1122 | } else { |
| 1123 | return DVBS2_DEMOD_NOLOCK; |
| 1124 | } |
| 1125 | } |
| 1126 | |
| 1127 | /* |
| 1128 | * stb0899_dvbs2_get_data_lock |
| 1129 | * get FEC status |
| 1130 | */ |
| 1131 | static int stb0899_dvbs2_get_data_lock(struct stb0899_state *state, int timeout) |
| 1132 | { |
| 1133 | int time = 0, lock = 0; |
| 1134 | u8 reg; |
| 1135 | |
| 1136 | while ((!lock) && (time < timeout)) { |
| 1137 | reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1); |
| 1138 | dprintk(state->verbose, FE_DEBUG, 1, "---------> CFGPDELSTATUS=[0x%02x]", reg); |
| 1139 | lock = STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg); |
| 1140 | time++; |
| 1141 | } |
| 1142 | |
| 1143 | return lock; |
| 1144 | } |
| 1145 | |
| 1146 | /* |
| 1147 | * stb0899_dvbs2_get_fec_status |
| 1148 | * get DVB-S2 FEC LOCK status |
| 1149 | */ |
| 1150 | static enum stb0899_status stb0899_dvbs2_get_fec_status(struct stb0899_state *state, int timeout) |
| 1151 | { |
| 1152 | int time = 0, Locked; |
| 1153 | |
| 1154 | do { |
| 1155 | Locked = stb0899_dvbs2_get_data_lock(state, 1); |
| 1156 | time++; |
| 1157 | msleep(1); |
| 1158 | |
| 1159 | } while ((!Locked) && (time < timeout)); |
| 1160 | |
| 1161 | if (Locked) { |
| 1162 | dprintk(state->verbose, FE_DEBUG, 1, "---------->DVB-S2 FEC LOCK !"); |
| 1163 | return DVBS2_FEC_LOCK; |
| 1164 | } else { |
| 1165 | return DVBS2_FEC_NOLOCK; |
| 1166 | } |
| 1167 | } |
| 1168 | |
| 1169 | |
| 1170 | /* |
| 1171 | * stb0899_dvbs2_init_csm |
| 1172 | * set parameters for manual mode |
| 1173 | */ |
| 1174 | static void stb0899_dvbs2_init_csm(struct stb0899_state *state, int pilots, enum stb0899_modcod modcod) |
| 1175 | { |
| 1176 | struct stb0899_internal *internal = &state->internal; |
| 1177 | |
| 1178 | s32 dvt_tbl = 1, two_pass = 0, agc_gain = 6, agc_shift = 0, loop_shift = 0, phs_diff_thr = 0x80; |
| 1179 | s32 gamma_acq, gamma_rho_acq, gamma_trk, gamma_rho_trk, lock_count_thr; |
| 1180 | u32 csm1, csm2, csm3, csm4; |
| 1181 | |
| 1182 | if (((internal->master_clk / internal->srate) <= 4) && (modcod <= 11) && (pilots == 1)) { |
| 1183 | switch (modcod) { |
| 1184 | case STB0899_QPSK_12: |
| 1185 | gamma_acq = 25; |
| 1186 | gamma_rho_acq = 2700; |
| 1187 | gamma_trk = 12; |
| 1188 | gamma_rho_trk = 180; |
| 1189 | lock_count_thr = 8; |
| 1190 | break; |
| 1191 | case STB0899_QPSK_35: |
| 1192 | gamma_acq = 38; |
| 1193 | gamma_rho_acq = 7182; |
| 1194 | gamma_trk = 14; |
| 1195 | gamma_rho_trk = 308; |
| 1196 | lock_count_thr = 8; |
| 1197 | break; |
| 1198 | case STB0899_QPSK_23: |
| 1199 | gamma_acq = 42; |
| 1200 | gamma_rho_acq = 9408; |
| 1201 | gamma_trk = 17; |
| 1202 | gamma_rho_trk = 476; |
| 1203 | lock_count_thr = 8; |
| 1204 | break; |
| 1205 | case STB0899_QPSK_34: |
| 1206 | gamma_acq = 53; |
| 1207 | gamma_rho_acq = 16642; |
| 1208 | gamma_trk = 19; |
| 1209 | gamma_rho_trk = 646; |
| 1210 | lock_count_thr = 8; |
| 1211 | break; |
| 1212 | case STB0899_QPSK_45: |
| 1213 | gamma_acq = 53; |
| 1214 | gamma_rho_acq = 17119; |
| 1215 | gamma_trk = 22; |
| 1216 | gamma_rho_trk = 880; |
| 1217 | lock_count_thr = 8; |
| 1218 | break; |
| 1219 | case STB0899_QPSK_56: |
| 1220 | gamma_acq = 55; |
| 1221 | gamma_rho_acq = 19250; |
| 1222 | gamma_trk = 23; |
| 1223 | gamma_rho_trk = 989; |
| 1224 | lock_count_thr = 8; |
| 1225 | break; |
| 1226 | case STB0899_QPSK_89: |
| 1227 | gamma_acq = 60; |
| 1228 | gamma_rho_acq = 24240; |
| 1229 | gamma_trk = 24; |
| 1230 | gamma_rho_trk = 1176; |
| 1231 | lock_count_thr = 8; |
| 1232 | break; |
| 1233 | case STB0899_QPSK_910: |
| 1234 | gamma_acq = 66; |
| 1235 | gamma_rho_acq = 29634; |
| 1236 | gamma_trk = 24; |
| 1237 | gamma_rho_trk = 1176; |
| 1238 | lock_count_thr = 8; |
| 1239 | break; |
| 1240 | default: |
| 1241 | gamma_acq = 66; |
| 1242 | gamma_rho_acq = 29634; |
| 1243 | gamma_trk = 24; |
| 1244 | gamma_rho_trk = 1176; |
| 1245 | lock_count_thr = 8; |
| 1246 | break; |
| 1247 | } |
| 1248 | |
| 1249 | csm1 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); |
| 1250 | STB0899_SETFIELD_VAL(CSM_AUTO_PARAM, csm1, 0); |
| 1251 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, csm1); |
| 1252 | |
| 1253 | csm1 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); |
| 1254 | csm2 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL2); |
| 1255 | csm3 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL3); |
| 1256 | csm4 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL4); |
| 1257 | |
| 1258 | STB0899_SETFIELD_VAL(CSM_DVT_TABLE, csm1, dvt_tbl); |
| 1259 | STB0899_SETFIELD_VAL(CSM_TWO_PASS, csm1, two_pass); |
| 1260 | STB0899_SETFIELD_VAL(CSM_AGC_GAIN, csm1, agc_gain); |
| 1261 | STB0899_SETFIELD_VAL(CSM_AGC_SHIFT, csm1, agc_shift); |
| 1262 | STB0899_SETFIELD_VAL(FE_LOOP_SHIFT, csm1, loop_shift); |
| 1263 | STB0899_SETFIELD_VAL(CSM_GAMMA_ACQ, csm2, gamma_acq); |
| 1264 | STB0899_SETFIELD_VAL(CSM_GAMMA_RHOACQ, csm2, gamma_rho_acq); |
| 1265 | STB0899_SETFIELD_VAL(CSM_GAMMA_TRACK, csm3, gamma_trk); |
| 1266 | STB0899_SETFIELD_VAL(CSM_GAMMA_RHOTRACK, csm3, gamma_rho_trk); |
| 1267 | STB0899_SETFIELD_VAL(CSM_LOCKCOUNT_THRESH, csm4, lock_count_thr); |
| 1268 | STB0899_SETFIELD_VAL(CSM_PHASEDIFF_THRESH, csm4, phs_diff_thr); |
| 1269 | |
| 1270 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, csm1); |
| 1271 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL2, STB0899_OFF0_CSM_CNTRL2, csm2); |
| 1272 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL3, STB0899_OFF0_CSM_CNTRL3, csm3); |
| 1273 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL4, STB0899_OFF0_CSM_CNTRL4, csm4); |
| 1274 | } |
| 1275 | } |
| 1276 | |
| 1277 | /* |
| 1278 | * stb0899_dvbs2_get_srate |
| 1279 | * get DVB-S2 Symbol Rate |
| 1280 | */ |
| 1281 | static u32 stb0899_dvbs2_get_srate(struct stb0899_state *state) |
| 1282 | { |
| 1283 | struct stb0899_internal *internal = &state->internal; |
| 1284 | struct stb0899_config *config = state->config; |
| 1285 | |
| 1286 | u32 bTrNomFreq, srate, decimRate, intval1, intval2, reg; |
| 1287 | int div1, div2, rem1, rem2; |
| 1288 | |
| 1289 | div1 = config->btr_nco_bits / 2; |
| 1290 | div2 = config->btr_nco_bits - div1 - 1; |
| 1291 | |
| 1292 | bTrNomFreq = STB0899_READ_S2REG(STB0899_S2DEMOD, BTR_NOM_FREQ); |
| 1293 | |
| 1294 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DECIM_CNTRL); |
| 1295 | decimRate = STB0899_GETFIELD(DECIM_RATE, reg); |
| 1296 | decimRate = (1 << decimRate); |
| 1297 | |
| 1298 | intval1 = internal->master_clk / (1 << div1); |
| 1299 | intval2 = bTrNomFreq / (1 << div2); |
| 1300 | |
| 1301 | rem1 = internal->master_clk % (1 << div1); |
| 1302 | rem2 = bTrNomFreq % (1 << div2); |
| 1303 | /* only for integer calculation */ |
| 1304 | srate = (intval1 * intval2) + ((intval1 * rem2) / (1 << div2)) + ((intval2 * rem1) / (1 << div1)); |
| 1305 | srate /= decimRate; /*symbrate = (btrnomfreq_register_val*MasterClock)/2^(27+decim_rate_field) */ |
| 1306 | |
| 1307 | return srate; |
| 1308 | } |
| 1309 | |
| 1310 | /* |
| 1311 | * stb0899_dvbs2_algo |
| 1312 | * Search for signal, timing, carrier and data for a given |
| 1313 | * frequency in a given range |
| 1314 | */ |
| 1315 | enum stb0899_status stb0899_dvbs2_algo(struct stb0899_state *state) |
| 1316 | { |
| 1317 | struct stb0899_internal *internal = &state->internal; |
| 1318 | enum stb0899_modcod modcod; |
| 1319 | |
| 1320 | s32 offsetfreq, searchTime, FecLockTime, pilots, iqSpectrum; |
| 1321 | int i = 0; |
| 1322 | u32 reg, csm1; |
| 1323 | |
| 1324 | if (internal->srate <= 2000000) { |
| 1325 | searchTime = 5000; /* 5000 ms max time to lock UWP and CSM, SYMB <= 2Mbs */ |
| 1326 | FecLockTime = 350; /* 350 ms max time to lock FEC, SYMB <= 2Mbs */ |
| 1327 | } else if (internal->srate <= 5000000) { |
| 1328 | searchTime = 2500; /* 2500 ms max time to lock UWP and CSM, 2Mbs < SYMB <= 5Mbs */ |
| 1329 | FecLockTime = 170; /* 170 ms max time to lock FEC, 2Mbs< SYMB <= 5Mbs */ |
| 1330 | } else if (internal->srate <= 10000000) { |
| 1331 | searchTime = 1500; /* 1500 ms max time to lock UWP and CSM, 5Mbs <SYMB <= 10Mbs */ |
| 1332 | FecLockTime = 80; /* 80 ms max time to lock FEC, 5Mbs< SYMB <= 10Mbs */ |
| 1333 | } else if (internal->srate <= 15000000) { |
| 1334 | searchTime = 500; /* 500 ms max time to lock UWP and CSM, 10Mbs <SYMB <= 15Mbs */ |
| 1335 | FecLockTime = 50; /* 50 ms max time to lock FEC, 10Mbs< SYMB <= 15Mbs */ |
| 1336 | } else if (internal->srate <= 20000000) { |
| 1337 | searchTime = 300; /* 300 ms max time to lock UWP and CSM, 15Mbs < SYMB <= 20Mbs */ |
| 1338 | FecLockTime = 30; /* 50 ms max time to lock FEC, 15Mbs< SYMB <= 20Mbs */ |
| 1339 | } else if (internal->srate <= 25000000) { |
| 1340 | searchTime = 250; /* 250 ms max time to lock UWP and CSM, 20 Mbs < SYMB <= 25Mbs */ |
| 1341 | FecLockTime = 25; /* 25 ms max time to lock FEC, 20Mbs< SYMB <= 25Mbs */ |
| 1342 | } else { |
| 1343 | searchTime = 150; /* 150 ms max time to lock UWP and CSM, SYMB > 25Mbs */ |
| 1344 | FecLockTime = 20; /* 20 ms max time to lock FEC, 20Mbs< SYMB <= 25Mbs */ |
| 1345 | } |
| 1346 | |
| 1347 | /* Maintain Stream Merger in reset during acquisition */ |
| 1348 | reg = stb0899_read_reg(state, STB0899_TSTRES); |
| 1349 | STB0899_SETFIELD_VAL(FRESRS, reg, 1); |
| 1350 | stb0899_write_reg(state, STB0899_TSTRES, reg); |
| 1351 | |
Manu Abraham | 40e8ce3 | 2008-02-03 19:37:02 -0300 | [diff] [blame] | 1352 | /* enable tuner I/O */ |
| 1353 | stb0899_i2c_gate_ctrl(&state->frontend, 1); |
| 1354 | |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1355 | /* Move tuner to frequency */ |
| 1356 | if (state->config->tuner_set_frequency) |
| 1357 | state->config->tuner_set_frequency(&state->frontend, internal->freq); |
| 1358 | if (state->config->tuner_get_frequency) |
| 1359 | state->config->tuner_get_frequency(&state->frontend, &internal->freq); |
| 1360 | |
Manu Abraham | 40e8ce3 | 2008-02-03 19:37:02 -0300 | [diff] [blame] | 1361 | /* disable tuner I/O */ |
| 1362 | stb0899_i2c_gate_ctrl(&state->frontend, 0); |
| 1363 | |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1364 | /* Set IF AGC to acquisition */ |
| 1365 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); |
| 1366 | STB0899_SETFIELD_VAL(IF_LOOP_GAIN, reg, 4); |
| 1367 | STB0899_SETFIELD_VAL(IF_AGC_REF, reg, 32); |
| 1368 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); |
| 1369 | |
| 1370 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL2); |
| 1371 | STB0899_SETFIELD_VAL(IF_AGC_DUMP_PER, reg, 0); |
| 1372 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL2, STB0899_OFF0_IF_AGC_CNTRL2, reg); |
| 1373 | |
| 1374 | /* Initialisation */ |
| 1375 | stb0899_dvbs2_init_calc(state); |
| 1376 | |
| 1377 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CNTRL2); |
| 1378 | switch (internal->inversion) { |
| 1379 | case IQ_SWAP_OFF: |
| 1380 | STB0899_SETFIELD_VAL(SPECTRUM_INVERT, reg, 0); |
| 1381 | break; |
| 1382 | case IQ_SWAP_ON: |
| 1383 | STB0899_SETFIELD_VAL(SPECTRUM_INVERT, reg, 1); |
| 1384 | break; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1385 | } |
| 1386 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_DMD_CNTRL2, STB0899_OFF0_DMD_CNTRL2, reg); |
| 1387 | stb0899_dvbs2_reacquire(state); |
| 1388 | |
| 1389 | /* Wait for demod lock (UWP and CSM) */ |
| 1390 | internal->status = stb0899_dvbs2_get_dmd_status(state, searchTime); |
| 1391 | |
| 1392 | if (internal->status == DVBS2_DEMOD_LOCK) { |
| 1393 | dprintk(state->verbose, FE_DEBUG, 1, "------------> DVB-S2 DEMOD LOCK !"); |
| 1394 | i = 0; |
| 1395 | /* Demod Locked, check FEC status */ |
| 1396 | internal->status = stb0899_dvbs2_get_fec_status(state, FecLockTime); |
| 1397 | |
| 1398 | /*If false lock (UWP and CSM Locked but no FEC) try 3 time max*/ |
| 1399 | while ((internal->status != DVBS2_FEC_LOCK) && (i < 3)) { |
| 1400 | /* Read the frequency offset*/ |
| 1401 | offsetfreq = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_FREQ); |
| 1402 | |
| 1403 | /* Set the Nominal frequency to the found frequency offset for the next reacquire*/ |
| 1404 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_NOM_FREQ); |
| 1405 | STB0899_SETFIELD_VAL(CRL_NOM_FREQ, reg, offsetfreq); |
Marko Schluessler | 08bcdbe | 2007-09-21 18:40:14 -0300 | [diff] [blame] | 1406 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_NOM_FREQ, STB0899_OFF0_CRL_NOM_FREQ, reg); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1407 | stb0899_dvbs2_reacquire(state); |
| 1408 | internal->status = stb0899_dvbs2_get_fec_status(state, searchTime); |
| 1409 | i++; |
| 1410 | } |
| 1411 | } |
| 1412 | |
| 1413 | if (internal->status != DVBS2_FEC_LOCK) { |
Reinhard Nißl | fa64cfd | 2013-06-02 14:52:02 -0300 | [diff] [blame] | 1414 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CNTRL2); |
| 1415 | iqSpectrum = STB0899_GETFIELD(SPECTRUM_INVERT, reg); |
| 1416 | /* IQ Spectrum Inversion */ |
| 1417 | STB0899_SETFIELD_VAL(SPECTRUM_INVERT, reg, !iqSpectrum); |
| 1418 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_DMD_CNTRL2, STB0899_OFF0_DMD_CNTRL2, reg); |
| 1419 | /* start acquistion process */ |
| 1420 | stb0899_dvbs2_reacquire(state); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1421 | |
Reinhard Nißl | fa64cfd | 2013-06-02 14:52:02 -0300 | [diff] [blame] | 1422 | /* Wait for demod lock (UWP and CSM) */ |
| 1423 | internal->status = stb0899_dvbs2_get_dmd_status(state, searchTime); |
| 1424 | if (internal->status == DVBS2_DEMOD_LOCK) { |
| 1425 | i = 0; |
| 1426 | /* Demod Locked, check FEC */ |
| 1427 | internal->status = stb0899_dvbs2_get_fec_status(state, FecLockTime); |
| 1428 | /*try thrice for false locks, (UWP and CSM Locked but no FEC) */ |
| 1429 | while ((internal->status != DVBS2_FEC_LOCK) && (i < 3)) { |
| 1430 | /* Read the frequency offset*/ |
| 1431 | offsetfreq = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_FREQ); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1432 | |
Reinhard Nißl | fa64cfd | 2013-06-02 14:52:02 -0300 | [diff] [blame] | 1433 | /* Set the Nominal frequency to the found frequency offset for the next reacquire*/ |
| 1434 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_NOM_FREQ); |
| 1435 | STB0899_SETFIELD_VAL(CRL_NOM_FREQ, reg, offsetfreq); |
| 1436 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CRL_NOM_FREQ, STB0899_OFF0_CRL_NOM_FREQ, reg); |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1437 | |
Reinhard Nißl | fa64cfd | 2013-06-02 14:52:02 -0300 | [diff] [blame] | 1438 | stb0899_dvbs2_reacquire(state); |
| 1439 | internal->status = stb0899_dvbs2_get_fec_status(state, searchTime); |
| 1440 | i++; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1441 | } |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1442 | } |
Reinhard Nißl | fa64cfd | 2013-06-02 14:52:02 -0300 | [diff] [blame] | 1443 | /* |
| 1444 | if (pParams->DVBS2State == FE_DVBS2_FEC_LOCKED) |
| 1445 | pParams->IQLocked = !iqSpectrum; |
| 1446 | */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1447 | } |
| 1448 | if (internal->status == DVBS2_FEC_LOCK) { |
| 1449 | dprintk(state->verbose, FE_DEBUG, 1, "----------------> DVB-S2 FEC Lock !"); |
| 1450 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); |
| 1451 | modcod = STB0899_GETFIELD(UWP_DECODE_MOD, reg) >> 2; |
| 1452 | pilots = STB0899_GETFIELD(UWP_DECODE_MOD, reg) & 0x01; |
| 1453 | |
| 1454 | if ((((10 * internal->master_clk) / (internal->srate / 10)) <= 410) && |
| 1455 | (INRANGE(STB0899_QPSK_23, modcod, STB0899_QPSK_910)) && |
| 1456 | (pilots == 1)) { |
| 1457 | |
| 1458 | stb0899_dvbs2_init_csm(state, pilots, modcod); |
| 1459 | /* Wait for UWP,CSM and data LOCK 20ms max */ |
| 1460 | internal->status = stb0899_dvbs2_get_fec_status(state, FecLockTime); |
| 1461 | |
| 1462 | i = 0; |
| 1463 | while ((internal->status != DVBS2_FEC_LOCK) && (i < 3)) { |
| 1464 | csm1 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); |
| 1465 | STB0899_SETFIELD_VAL(CSM_TWO_PASS, csm1, 1); |
| 1466 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, csm1); |
| 1467 | csm1 = STB0899_READ_S2REG(STB0899_S2DEMOD, CSM_CNTRL1); |
| 1468 | STB0899_SETFIELD_VAL(CSM_TWO_PASS, csm1, 0); |
| 1469 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_CSM_CNTRL1, STB0899_OFF0_CSM_CNTRL1, csm1); |
| 1470 | |
| 1471 | internal->status = stb0899_dvbs2_get_fec_status(state, FecLockTime); |
| 1472 | i++; |
| 1473 | } |
| 1474 | } |
| 1475 | |
| 1476 | if ((((10 * internal->master_clk) / (internal->srate / 10)) <= 410) && |
| 1477 | (INRANGE(STB0899_QPSK_12, modcod, STB0899_QPSK_35)) && |
| 1478 | (pilots == 1)) { |
| 1479 | |
| 1480 | /* Equalizer Disable update */ |
| 1481 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, EQ_CNTRL); |
| 1482 | STB0899_SETFIELD_VAL(EQ_DISABLE_UPDATE, reg, 1); |
| 1483 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQ_CNTRL, STB0899_OFF0_EQ_CNTRL, reg); |
| 1484 | } |
| 1485 | |
| 1486 | /* slow down the Equalizer once locked */ |
| 1487 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, EQ_CNTRL); |
| 1488 | STB0899_SETFIELD_VAL(EQ_SHIFT, reg, 0x02); |
| 1489 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_EQ_CNTRL, STB0899_OFF0_EQ_CNTRL, reg); |
| 1490 | |
| 1491 | /* Store signal parameters */ |
| 1492 | offsetfreq = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_FREQ); |
| 1493 | |
Martin Kepplinger | 2948c01 | 2015-01-25 11:51:35 -0300 | [diff] [blame] | 1494 | offsetfreq = sign_extend32(offsetfreq, 29); |
Reinhard Nißl | ccac68f | 2013-06-02 14:37:06 -0300 | [diff] [blame] | 1495 | |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1496 | offsetfreq = offsetfreq / ((1 << 30) / 1000); |
| 1497 | offsetfreq *= (internal->master_clk / 1000000); |
Reinhard Nißl | 0c1d2b1 | 2013-06-02 14:59:00 -0300 | [diff] [blame] | 1498 | |
| 1499 | /* store current inversion for next run */ |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1500 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CNTRL2); |
| 1501 | if (STB0899_GETFIELD(SPECTRUM_INVERT, reg)) |
Reinhard Nißl | 0c1d2b1 | 2013-06-02 14:59:00 -0300 | [diff] [blame] | 1502 | internal->inversion = IQ_SWAP_ON; |
| 1503 | else |
| 1504 | internal->inversion = IQ_SWAP_OFF; |
| 1505 | |
Reinhard Nißl | 7db462c | 2013-06-02 15:03:13 -0300 | [diff] [blame] | 1506 | internal->freq = internal->freq + offsetfreq; |
Manu Abraham | 8bd135b | 2007-07-03 09:53:42 -0300 | [diff] [blame] | 1507 | internal->srate = stb0899_dvbs2_get_srate(state); |
| 1508 | |
| 1509 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); |
| 1510 | internal->modcod = STB0899_GETFIELD(UWP_DECODE_MOD, reg) >> 2; |
| 1511 | internal->pilots = STB0899_GETFIELD(UWP_DECODE_MOD, reg) & 0x01; |
| 1512 | internal->frame_length = (STB0899_GETFIELD(UWP_DECODE_MOD, reg) >> 1) & 0x01; |
| 1513 | |
| 1514 | /* Set IF AGC to tracking */ |
| 1515 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); |
| 1516 | STB0899_SETFIELD_VAL(IF_LOOP_GAIN, reg, 3); |
| 1517 | |
| 1518 | /* if QPSK 1/2,QPSK 3/5 or QPSK 2/3 set IF AGC reference to 16 otherwise 32*/ |
| 1519 | if (INRANGE(STB0899_QPSK_12, internal->modcod, STB0899_QPSK_23)) |
| 1520 | STB0899_SETFIELD_VAL(IF_AGC_REF, reg, 16); |
| 1521 | |
| 1522 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); |
| 1523 | |
| 1524 | reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL2); |
| 1525 | STB0899_SETFIELD_VAL(IF_AGC_DUMP_PER, reg, 7); |
| 1526 | stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL2, STB0899_OFF0_IF_AGC_CNTRL2, reg); |
| 1527 | } |
| 1528 | |
| 1529 | /* Release Stream Merger Reset */ |
| 1530 | reg = stb0899_read_reg(state, STB0899_TSTRES); |
| 1531 | STB0899_SETFIELD_VAL(FRESRS, reg, 0); |
| 1532 | stb0899_write_reg(state, STB0899_TSTRES, reg); |
| 1533 | |
| 1534 | return internal->status; |
| 1535 | } |