1 /* 2 * ASoC codec driver for spear platform 3 * 4 * sound/soc/codecs/sta529.c -- spear ALSA Soc codec driver 5 * 6 * Copyright (C) 2012 ST Microelectronics 7 * Rajeev Kumar <rajeev-dlh.kumar@st.com> 8 * 9 * This file is licensed under the terms of the GNU General Public 10 * License version 2. This program is licensed "as is" without any 11 * warranty of any kind, whether express or implied. 12 */ 13 14 #include <linux/clk.h> 15 #include <linux/init.h> 16 #include <linux/i2c.h> 17 #include <linux/io.h> 18 #include <linux/module.h> 19 #include <linux/moduleparam.h> 20 #include <linux/pm.h> 21 #include <linux/regmap.h> 22 #include <linux/slab.h> 23 24 #include <sound/core.h> 25 #include <sound/initval.h> 26 #include <sound/pcm.h> 27 #include <sound/pcm_params.h> 28 #include <sound/soc.h> 29 #include <sound/soc-dapm.h> 30 #include <sound/tlv.h> 31 32 /* STA529 Register offsets */ 33 #define STA529_FFXCFG0 0x00 34 #define STA529_FFXCFG1 0x01 35 #define STA529_MVOL 0x02 36 #define STA529_LVOL 0x03 37 #define STA529_RVOL 0x04 38 #define STA529_TTF0 0x05 39 #define STA529_TTF1 0x06 40 #define STA529_TTP0 0x07 41 #define STA529_TTP1 0x08 42 #define STA529_S2PCFG0 0x0A 43 #define STA529_S2PCFG1 0x0B 44 #define STA529_P2SCFG0 0x0C 45 #define STA529_P2SCFG1 0x0D 46 #define STA529_PLLCFG0 0x14 47 #define STA529_PLLCFG1 0x15 48 #define STA529_PLLCFG2 0x16 49 #define STA529_PLLCFG3 0x17 50 #define STA529_PLLPFE 0x18 51 #define STA529_PLLST 0x19 52 #define STA529_ADCCFG 0x1E /*mic_select*/ 53 #define STA529_CKOCFG 0x1F 54 #define STA529_MISC 0x20 55 #define STA529_PADST0 0x21 56 #define STA529_PADST1 0x22 57 #define STA529_FFXST 0x23 58 #define STA529_PWMIN1 0x2D 59 #define STA529_PWMIN2 0x2E 60 #define STA529_POWST 0x32 61 62 #define STA529_MAX_REGISTER 0x32 63 64 #define STA529_RATES (SNDRV_PCM_RATE_8000 | \ 65 SNDRV_PCM_RATE_11025 | \ 66 SNDRV_PCM_RATE_16000 | \ 67 SNDRV_PCM_RATE_22050 | \ 68 SNDRV_PCM_RATE_32000 | \ 69 SNDRV_PCM_RATE_44100 | \ 70 SNDRV_PCM_RATE_48000) 71 72 #define STA529_FORMAT (SNDRV_PCM_FMTBIT_S16_LE | \ 73 SNDRV_PCM_FMTBIT_S24_LE | \ 74 SNDRV_PCM_FMTBIT_S32_LE) 75 #define S2PC_VALUE 0x98 76 #define CLOCK_OUT 0x60 77 #define LEFT_J_DATA_FORMAT 0x10 78 #define I2S_DATA_FORMAT 0x12 79 #define RIGHT_J_DATA_FORMAT 0x14 80 #define CODEC_MUTE_VAL 0x80 81 82 #define POWER_CNTLMSAK 0x40 83 #define POWER_STDBY 0x40 84 #define FFX_MASK 0x80 85 #define FFX_OFF 0x80 86 #define POWER_UP 0x00 87 #define FFX_CLK_ENB 0x01 88 #define FFX_CLK_DIS 0x00 89 #define FFX_CLK_MSK 0x01 90 #define PLAY_FREQ_RANGE_MSK 0x70 91 #define CAP_FREQ_RANGE_MSK 0x0C 92 #define PDATA_LEN_MSK 0xC0 93 #define BCLK_TO_FS_MSK 0x30 94 #define AUDIO_MUTE_MSK 0x80 95 96 static const struct reg_default sta529_reg_defaults[] = { 97 { 0, 0x35 }, /* R0 - FFX Configuration reg 0 */ 98 { 1, 0xc8 }, /* R1 - FFX Configuration reg 1 */ 99 { 2, 0x50 }, /* R2 - Master Volume */ 100 { 3, 0x00 }, /* R3 - Left Volume */ 101 { 4, 0x00 }, /* R4 - Right Volume */ 102 { 10, 0xb2 }, /* R10 - S2P Config Reg 0 */ 103 { 11, 0x41 }, /* R11 - S2P Config Reg 1 */ 104 { 12, 0x92 }, /* R12 - P2S Config Reg 0 */ 105 { 13, 0x41 }, /* R13 - P2S Config Reg 1 */ 106 { 30, 0xd2 }, /* R30 - ADC Config Reg */ 107 { 31, 0x40 }, /* R31 - clock Out Reg */ 108 { 32, 0x21 }, /* R32 - Misc Register */ 109 }; 110 111 struct sta529 { 112 struct regmap *regmap; 113 }; 114 115 static bool sta529_readable(struct device *dev, unsigned int reg) 116 { 117 switch (reg) { 118 119 case STA529_FFXCFG0: 120 case STA529_FFXCFG1: 121 case STA529_MVOL: 122 case STA529_LVOL: 123 case STA529_RVOL: 124 case STA529_S2PCFG0: 125 case STA529_S2PCFG1: 126 case STA529_P2SCFG0: 127 case STA529_P2SCFG1: 128 case STA529_ADCCFG: 129 case STA529_CKOCFG: 130 case STA529_MISC: 131 return true; 132 default: 133 return false; 134 } 135 } 136 137 138 static const char *pwm_mode_text[] = { "Binary", "Headphone", "Ternary", 139 "Phase-shift"}; 140 141 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -9150, 50, 0); 142 static const DECLARE_TLV_DB_SCALE(master_vol_tlv, -12750, 50, 0); 143 static const SOC_ENUM_SINGLE_DECL(pwm_src, STA529_FFXCFG1, 4, pwm_mode_text); 144 145 static const struct snd_kcontrol_new sta529_snd_controls[] = { 146 SOC_DOUBLE_R_TLV("Digital Playback Volume", STA529_LVOL, STA529_RVOL, 0, 147 127, 0, out_gain_tlv), 148 SOC_SINGLE_TLV("Master Playback Volume", STA529_MVOL, 0, 127, 1, 149 master_vol_tlv), 150 SOC_ENUM("PWM Select", pwm_src), 151 }; 152 153 static int sta529_set_bias_level(struct snd_soc_codec *codec, enum 154 snd_soc_bias_level level) 155 { 156 struct sta529 *sta529 = snd_soc_codec_get_drvdata(codec); 157 158 switch (level) { 159 case SND_SOC_BIAS_ON: 160 case SND_SOC_BIAS_PREPARE: 161 snd_soc_update_bits(codec, STA529_FFXCFG0, POWER_CNTLMSAK, 162 POWER_UP); 163 snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK, 164 FFX_CLK_ENB); 165 break; 166 case SND_SOC_BIAS_STANDBY: 167 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) 168 regcache_sync(sta529->regmap); 169 snd_soc_update_bits(codec, STA529_FFXCFG0, 170 POWER_CNTLMSAK, POWER_STDBY); 171 /* Making FFX output to zero */ 172 snd_soc_update_bits(codec, STA529_FFXCFG0, FFX_MASK, 173 FFX_OFF); 174 snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK, 175 FFX_CLK_DIS); 176 break; 177 case SND_SOC_BIAS_OFF: 178 break; 179 } 180 181 /* 182 * store the label for powers down audio subsystem for suspend.This is 183 * used by soc core layer 184 */ 185 codec->dapm.bias_level = level; 186 187 return 0; 188 189 } 190 191 static int sta529_hw_params(struct snd_pcm_substream *substream, 192 struct snd_pcm_hw_params *params, 193 struct snd_soc_dai *dai) 194 { 195 struct snd_soc_pcm_runtime *rtd = substream->private_data; 196 struct snd_soc_codec *codec = rtd->codec; 197 int pdata, play_freq_val, record_freq_val; 198 int bclk_to_fs_ratio; 199 200 switch (params_format(params)) { 201 case SNDRV_PCM_FORMAT_S16_LE: 202 pdata = 1; 203 bclk_to_fs_ratio = 0; 204 break; 205 case SNDRV_PCM_FORMAT_S24_LE: 206 pdata = 2; 207 bclk_to_fs_ratio = 1; 208 break; 209 case SNDRV_PCM_FORMAT_S32_LE: 210 pdata = 3; 211 bclk_to_fs_ratio = 2; 212 break; 213 default: 214 dev_err(codec->dev, "Unsupported format\n"); 215 return -EINVAL; 216 } 217 218 switch (params_rate(params)) { 219 case 8000: 220 case 11025: 221 play_freq_val = 0; 222 record_freq_val = 2; 223 break; 224 case 16000: 225 case 22050: 226 play_freq_val = 1; 227 record_freq_val = 0; 228 break; 229 230 case 32000: 231 case 44100: 232 case 48000: 233 play_freq_val = 2; 234 record_freq_val = 0; 235 break; 236 default: 237 dev_err(codec->dev, "Unsupported rate\n"); 238 return -EINVAL; 239 } 240 241 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 242 snd_soc_update_bits(codec, STA529_S2PCFG1, PDATA_LEN_MSK, 243 pdata << 6); 244 snd_soc_update_bits(codec, STA529_S2PCFG1, BCLK_TO_FS_MSK, 245 bclk_to_fs_ratio << 4); 246 snd_soc_update_bits(codec, STA529_MISC, PLAY_FREQ_RANGE_MSK, 247 play_freq_val << 4); 248 } else { 249 snd_soc_update_bits(codec, STA529_P2SCFG1, PDATA_LEN_MSK, 250 pdata << 6); 251 snd_soc_update_bits(codec, STA529_P2SCFG1, BCLK_TO_FS_MSK, 252 bclk_to_fs_ratio << 4); 253 snd_soc_update_bits(codec, STA529_MISC, CAP_FREQ_RANGE_MSK, 254 record_freq_val << 2); 255 } 256 257 return 0; 258 } 259 260 static int sta529_mute(struct snd_soc_dai *dai, int mute) 261 { 262 u8 val = 0; 263 264 if (mute) 265 val |= CODEC_MUTE_VAL; 266 267 snd_soc_update_bits(dai->codec, STA529_FFXCFG0, AUDIO_MUTE_MSK, val); 268 269 return 0; 270 } 271 272 static int sta529_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt) 273 { 274 struct snd_soc_codec *codec = codec_dai->codec; 275 u8 mode = 0; 276 277 /* interface format */ 278 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 279 case SND_SOC_DAIFMT_LEFT_J: 280 mode = LEFT_J_DATA_FORMAT; 281 break; 282 case SND_SOC_DAIFMT_I2S: 283 mode = I2S_DATA_FORMAT; 284 break; 285 case SND_SOC_DAIFMT_RIGHT_J: 286 mode = RIGHT_J_DATA_FORMAT; 287 break; 288 default: 289 return -EINVAL; 290 } 291 292 snd_soc_update_bits(codec, STA529_S2PCFG0, 0x0D, mode); 293 294 return 0; 295 } 296 297 static const struct snd_soc_dai_ops sta529_dai_ops = { 298 .hw_params = sta529_hw_params, 299 .set_fmt = sta529_set_dai_fmt, 300 .digital_mute = sta529_mute, 301 }; 302 303 static struct snd_soc_dai_driver sta529_dai = { 304 .name = "sta529-audio", 305 .playback = { 306 .stream_name = "Playback", 307 .channels_min = 2, 308 .channels_max = 2, 309 .rates = STA529_RATES, 310 .formats = STA529_FORMAT, 311 }, 312 .capture = { 313 .stream_name = "Capture", 314 .channels_min = 2, 315 .channels_max = 2, 316 .rates = STA529_RATES, 317 .formats = STA529_FORMAT, 318 }, 319 .ops = &sta529_dai_ops, 320 }; 321 322 static int sta529_probe(struct snd_soc_codec *codec) 323 { 324 struct sta529 *sta529 = snd_soc_codec_get_drvdata(codec); 325 int ret; 326 327 codec->control_data = sta529->regmap; 328 ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP); 329 330 if (ret < 0) { 331 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 332 return ret; 333 } 334 sta529_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 335 336 return 0; 337 } 338 339 /* power down chip */ 340 static int sta529_remove(struct snd_soc_codec *codec) 341 { 342 sta529_set_bias_level(codec, SND_SOC_BIAS_OFF); 343 344 return 0; 345 } 346 347 static int sta529_suspend(struct snd_soc_codec *codec) 348 { 349 sta529_set_bias_level(codec, SND_SOC_BIAS_OFF); 350 351 return 0; 352 } 353 354 static int sta529_resume(struct snd_soc_codec *codec) 355 { 356 sta529_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 357 358 return 0; 359 } 360 361 static const struct snd_soc_codec_driver sta529_codec_driver = { 362 .probe = sta529_probe, 363 .remove = sta529_remove, 364 .set_bias_level = sta529_set_bias_level, 365 .suspend = sta529_suspend, 366 .resume = sta529_resume, 367 .controls = sta529_snd_controls, 368 .num_controls = ARRAY_SIZE(sta529_snd_controls), 369 }; 370 371 static const struct regmap_config sta529_regmap = { 372 .reg_bits = 8, 373 .val_bits = 8, 374 375 .max_register = STA529_MAX_REGISTER, 376 .readable_reg = sta529_readable, 377 378 .cache_type = REGCACHE_RBTREE, 379 .reg_defaults = sta529_reg_defaults, 380 .num_reg_defaults = ARRAY_SIZE(sta529_reg_defaults), 381 }; 382 383 static int sta529_i2c_probe(struct i2c_client *i2c, 384 const struct i2c_device_id *id) 385 { 386 struct sta529 *sta529; 387 int ret; 388 389 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 390 return -EINVAL; 391 392 sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL); 393 if (sta529 == NULL) { 394 dev_err(&i2c->dev, "Can not allocate memory\n"); 395 return -ENOMEM; 396 } 397 398 sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap); 399 if (IS_ERR(sta529->regmap)) { 400 ret = PTR_ERR(sta529->regmap); 401 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); 402 return ret; 403 } 404 405 i2c_set_clientdata(i2c, sta529); 406 407 ret = snd_soc_register_codec(&i2c->dev, 408 &sta529_codec_driver, &sta529_dai, 1); 409 if (ret != 0) 410 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); 411 412 return ret; 413 } 414 415 static int sta529_i2c_remove(struct i2c_client *client) 416 { 417 snd_soc_unregister_codec(&client->dev); 418 419 return 0; 420 } 421 422 static const struct i2c_device_id sta529_i2c_id[] = { 423 { "sta529", 0 }, 424 { } 425 }; 426 MODULE_DEVICE_TABLE(i2c, sta529_i2c_id); 427 428 static struct i2c_driver sta529_i2c_driver = { 429 .driver = { 430 .name = "sta529", 431 .owner = THIS_MODULE, 432 }, 433 .probe = sta529_i2c_probe, 434 .remove = sta529_i2c_remove, 435 .id_table = sta529_i2c_id, 436 }; 437 438 module_i2c_driver(sta529_i2c_driver); 439 440 MODULE_DESCRIPTION("ASoC STA529 codec driver"); 441 MODULE_AUTHOR("Rajeev Kumar <rajeev-dlh.kumar@st.com>"); 442 MODULE_LICENSE("GPL"); 443