Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Support for Digigram Lola PCI-e boards * * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de> */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> #include <sound/core.h> #include <sound/pcm.h> #include "lola.h" unsigned int lola_sample_rate_convert(unsigned int coded) { unsigned int freq; /* base frequency */ switch (coded & 0x3) { case 0: freq = 48000; break; case 1: freq = 44100; break; case 2: freq = 32000; break; default: return 0; /* error */ } /* multiplier / devisor */ switch (coded & 0x1c) { case (0 << 2): break; case (4 << 2): break; case (1 << 2): freq *= 2; break; case (2 << 2): freq *= 4; break; case (5 << 2): freq /= 2; break; case (6 << 2): freq /= 4; break; default: return 0; /* error */ } /* ajustement */ switch (coded & 0x60) { case (0 << 5): break; case (1 << 5): freq = (freq * 999) / 1000; break; case (2 << 5): freq = (freq * 1001) / 1000; break; default: return 0; /* error */ } return freq; } /* * Granualrity */ #define LOLA_MAXFREQ_AT_GRANULARITY_MIN 48000 #define LOLA_MAXFREQ_AT_GRANULARITY_BELOW_MAX 96000 static bool check_gran_clock_compatibility(struct lola *chip, unsigned int val, unsigned int freq) { if (!chip->granularity) return true; if (val < LOLA_GRANULARITY_MIN || val > LOLA_GRANULARITY_MAX || (val % LOLA_GRANULARITY_STEP) != 0) return false; if (val == LOLA_GRANULARITY_MIN) { if (freq > LOLA_MAXFREQ_AT_GRANULARITY_MIN) return false; } else if (val < LOLA_GRANULARITY_MAX) { if (freq > LOLA_MAXFREQ_AT_GRANULARITY_BELOW_MAX) return false; } return true; } int lola_set_granularity(struct lola *chip, unsigned int val, bool force) { int err; if (!force) { if (val == chip->granularity) return 0; #if 0 /* change Gran only if there are no streams allocated ! */ if (chip->audio_in_alloc_mask || chip->audio_out_alloc_mask) return -EBUSY; #endif if (!check_gran_clock_compatibility(chip, val, chip->clock.cur_freq)) return -EINVAL; } chip->granularity = val; val /= LOLA_GRANULARITY_STEP; /* audio function group */ err = lola_codec_write(chip, 1, LOLA_VERB_SET_GRANULARITY_STEPS, val, 0); if (err < 0) return err; /* this can be a very slow function !!! */ usleep_range(400 * val, 20000); return lola_codec_flush(chip); } /* * Clock widget handling */ int lola_init_clock_widget(struct lola *chip, int nid) { unsigned int val; int i, j, nitems, nb_verbs, idx, idx_list; int err; err = lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val); if (err < 0) { dev_err(chip->card->dev, "Can't read wcaps for 0x%x\n", nid); return err; } if ((val & 0xfff00000) != 0x01f00000) { /* test SubType and Type */ dev_dbg(chip->card->dev, "No valid clock widget\n"); return 0; } chip->clock.nid = nid; chip->clock.items = val & 0xff; dev_dbg(chip->card->dev, "clock_list nid=%x, entries=%d\n", nid, chip->clock.items); if (chip->clock.items > MAX_SAMPLE_CLOCK_COUNT) { dev_err(chip->card->dev, "CLOCK_LIST too big: %d\n", chip->clock.items); return -EINVAL; } nitems = chip->clock.items; nb_verbs = DIV_ROUND_UP(nitems, 4); idx = 0; idx_list = 0; for (i = 0; i < nb_verbs; i++) { unsigned int res_ex; unsigned short items[4]; err = lola_codec_read(chip, nid, LOLA_VERB_GET_CLOCK_LIST, idx, 0, &val, &res_ex); if (err < 0) { dev_err(chip->card->dev, "Can't read CLOCK_LIST\n"); return -EINVAL; } items[0] = val & 0xfff; items[1] = (val >> 16) & 0xfff; items[2] = res_ex & 0xfff; items[3] = (res_ex >> 16) & 0xfff; for (j = 0; j < 4; j++) { unsigned char type = items[j] >> 8; unsigned int freq = items[j] & 0xff; int format = LOLA_CLOCK_FORMAT_NONE; bool add_clock = true; if (type == LOLA_CLOCK_TYPE_INTERNAL) { freq = lola_sample_rate_convert(freq); if (freq < chip->sample_rate_min) add_clock = false; else if (freq == 48000) { chip->clock.cur_index = idx_list; chip->clock.cur_freq = 48000; chip->clock.cur_valid = true; } } else if (type == LOLA_CLOCK_TYPE_VIDEO) { freq = lola_sample_rate_convert(freq); if (freq < chip->sample_rate_min) add_clock = false; /* video clock has a format (0:NTSC, 1:PAL)*/ if (items[j] & 0x80) format = LOLA_CLOCK_FORMAT_NTSC; else format = LOLA_CLOCK_FORMAT_PAL; } if (add_clock) { struct lola_sample_clock *sc; sc = &chip->clock.sample_clock[idx_list]; sc->type = type; sc->format = format; sc->freq = freq; /* keep the index used with the board */ chip->clock.idx_lookup[idx_list] = idx; idx_list++; } else { chip->clock.items--; } if (++idx >= nitems) break; } } return 0; } /* enable unsolicited events of the clock widget */ int lola_enable_clock_events(struct lola *chip) { unsigned int res; int err; err = lola_codec_read(chip, chip->clock.nid, LOLA_VERB_SET_UNSOLICITED_ENABLE, LOLA_UNSOLICITED_ENABLE | LOLA_UNSOLICITED_TAG, 0, &res, NULL); if (err < 0) return err; if (res) { dev_warn(chip->card->dev, "error in enable_clock_events %d\n", res); return -EINVAL; } return 0; } int lola_set_clock_index(struct lola *chip, unsigned int idx) { unsigned int res; int err; err = lola_codec_read(chip, chip->clock.nid, LOLA_VERB_SET_CLOCK_SELECT, chip->clock.idx_lookup[idx], 0, &res, NULL); if (err < 0) return err; if (res) { dev_warn(chip->card->dev, "error in set_clock %d\n", res); return -EINVAL; } return 0; } bool lola_update_ext_clock_freq(struct lola *chip, unsigned int val) { unsigned int tag; /* the current EXTERNAL clock information gets updated by interrupt * with an unsolicited response */ if (!val) return false; tag = (val >> LOLA_UNSOL_RESP_TAG_OFFSET) & LOLA_UNSOLICITED_TAG_MASK; if (tag != LOLA_UNSOLICITED_TAG) return false; /* only for current = external clocks */ if (chip->clock.sample_clock[chip->clock.cur_index].type != LOLA_CLOCK_TYPE_INTERNAL) { chip->clock.cur_freq = lola_sample_rate_convert(val & 0x7f); chip->clock.cur_valid = (val & 0x100) != 0; } return true; } int lola_set_clock(struct lola *chip, int idx) { int freq = 0; bool valid = false; if (idx == chip->clock.cur_index) { /* current clock is allowed */ freq = chip->clock.cur_freq; valid = chip->clock.cur_valid; } else if (chip->clock.sample_clock[idx].type == LOLA_CLOCK_TYPE_INTERNAL) { /* internal clocks allowed */ freq = chip->clock.sample_clock[idx].freq; valid = true; } if (!freq || !valid) return -EINVAL; if (!check_gran_clock_compatibility(chip, chip->granularity, freq)) return -EINVAL; if (idx != chip->clock.cur_index) { int err = lola_set_clock_index(chip, idx); if (err < 0) return err; /* update new settings */ chip->clock.cur_index = idx; chip->clock.cur_freq = freq; chip->clock.cur_valid = true; } return 0; } int lola_set_sample_rate(struct lola *chip, int rate) { int i; if (chip->clock.cur_freq == rate && chip->clock.cur_valid) return 0; /* search for new dwClockIndex */ for (i = 0; i < chip->clock.items; i++) { if (chip->clock.sample_clock[i].type == LOLA_CLOCK_TYPE_INTERNAL && chip->clock.sample_clock[i].freq == rate) break; } if (i >= chip->clock.items) return -EINVAL; return lola_set_clock(chip, i); } |