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 <rajeevkumar.linux@gmail.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 DATA_FORMAT_MSK 0x0E 78 #define LEFT_J_DATA_FORMAT 0x00 79 #define I2S_DATA_FORMAT 0x02 80 #define RIGHT_J_DATA_FORMAT 0x04 81 #define CODEC_MUTE_VAL 0x80 82 83 #define POWER_CNTLMSAK 0x40 84 #define POWER_STDBY 0x40 85 #define FFX_MASK 0x80 86 #define FFX_OFF 0x80 87 #define POWER_UP 0x00 88 #define FFX_CLK_ENB 0x01 89 #define FFX_CLK_DIS 0x00 90 #define FFX_CLK_MSK 0x01 91 #define PLAY_FREQ_RANGE_MSK 0x70 92 #define CAP_FREQ_RANGE_MSK 0x0C 93 #define PDATA_LEN_MSK 0xC0 94 #define BCLK_TO_FS_MSK 0x30 95 #define AUDIO_MUTE_MSK 0x80 96 97 static const struct reg_default sta529_reg_defaults[] = { 98 { 0, 0x35 }, /* R0 - FFX Configuration reg 0 */ 99 { 1, 0xc8 }, /* R1 - FFX Configuration reg 1 */ 100 { 2, 0x50 }, /* R2 - Master Volume */ 101 { 3, 0x00 }, /* R3 - Left Volume */ 102 { 4, 0x00 }, /* R4 - Right Volume */ 103 { 10, 0xb2 }, /* R10 - S2P Config Reg 0 */ 104 { 11, 0x41 }, /* R11 - S2P Config Reg 1 */ 105 { 12, 0x92 }, /* R12 - P2S Config Reg 0 */ 106 { 13, 0x41 }, /* R13 - P2S Config Reg 1 */ 107 { 30, 0xd2 }, /* R30 - ADC Config Reg */ 108 { 31, 0x40 }, /* R31 - clock Out Reg */ 109 { 32, 0x21 }, /* R32 - Misc Register */ 110 }; 111 112 struct sta529 { 113 struct regmap *regmap; 114 }; 115 116 static bool sta529_readable(struct device *dev, unsigned int reg) 117 { 118 switch (reg) { 119 120 case STA529_FFXCFG0: 121 case STA529_FFXCFG1: 122 case STA529_MVOL: 123 case STA529_LVOL: 124 case STA529_RVOL: 125 case STA529_S2PCFG0: 126 case STA529_S2PCFG1: 127 case STA529_P2SCFG0: 128 case STA529_P2SCFG1: 129 case STA529_ADCCFG: 130 case STA529_CKOCFG: 131 case STA529_MISC: 132 return true; 133 default: 134 return false; 135 } 136 } 137 138 139 static const char *pwm_mode_text[] = { "Binary", "Headphone", "Ternary", 140 "Phase-shift"}; 141 142 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -9150, 50, 0); 143 static const DECLARE_TLV_DB_SCALE(master_vol_tlv, -12750, 50, 0); 144 static SOC_ENUM_SINGLE_DECL(pwm_src, STA529_FFXCFG1, 4, pwm_mode_text); 145 146 static const struct snd_kcontrol_new sta529_snd_controls[] = { 147 SOC_DOUBLE_R_TLV("Digital Playback Volume", STA529_LVOL, STA529_RVOL, 0, 148 127, 0, out_gain_tlv), 149 SOC_SINGLE_TLV("Master Playback Volume", STA529_MVOL, 0, 127, 1, 150 master_vol_tlv), 151 SOC_ENUM("PWM Select", pwm_src), 152 }; 153 154 static int sta529_set_bias_level(struct snd_soc_codec *codec, enum 155 snd_soc_bias_level level) 156 { 157 struct sta529 *sta529 = snd_soc_codec_get_drvdata(codec); 158 159 switch (level) { 160 case SND_SOC_BIAS_ON: 161 case SND_SOC_BIAS_PREPARE: 162 snd_soc_update_bits(codec, STA529_FFXCFG0, POWER_CNTLMSAK, 163 POWER_UP); 164 snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK, 165 FFX_CLK_ENB); 166 break; 167 case SND_SOC_BIAS_STANDBY: 168 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) 169 regcache_sync(sta529->regmap); 170 snd_soc_update_bits(codec, STA529_FFXCFG0, 171 POWER_CNTLMSAK, POWER_STDBY); 172 /* Making FFX output to zero */ 173 snd_soc_update_bits(codec, STA529_FFXCFG0, FFX_MASK, 174 FFX_OFF); 175 snd_soc_update_bits(codec, STA529_MISC, FFX_CLK_MSK, 176 FFX_CLK_DIS); 177 break; 178 case SND_SOC_BIAS_OFF: 179 break; 180 } 181 182 return 0; 183 184 } 185 186 static int sta529_hw_params(struct snd_pcm_substream *substream, 187 struct snd_pcm_hw_params *params, 188 struct snd_soc_dai *dai) 189 { 190 struct snd_soc_codec *codec = dai->codec; 191 int pdata, play_freq_val, record_freq_val; 192 int bclk_to_fs_ratio; 193 194 switch (params_width(params)) { 195 case 16: 196 pdata = 1; 197 bclk_to_fs_ratio = 0; 198 break; 199 case 24: 200 pdata = 2; 201 bclk_to_fs_ratio = 1; 202 break; 203 case 32: 204 pdata = 3; 205 bclk_to_fs_ratio = 2; 206 break; 207 default: 208 dev_err(codec->dev, "Unsupported format\n"); 209 return -EINVAL; 210 } 211 212 switch (params_rate(params)) { 213 case 8000: 214 case 11025: 215 play_freq_val = 0; 216 record_freq_val = 2; 217 break; 218 case 16000: 219 case 22050: 220 play_freq_val = 1; 221 record_freq_val = 0; 222 break; 223 224 case 32000: 225 case 44100: 226 case 48000: 227 play_freq_val = 2; 228 record_freq_val = 0; 229 break; 230 default: 231 dev_err(codec->dev, "Unsupported rate\n"); 232 return -EINVAL; 233 } 234 235 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 236 snd_soc_update_bits(codec, STA529_S2PCFG1, PDATA_LEN_MSK, 237 pdata << 6); 238 snd_soc_update_bits(codec, STA529_S2PCFG1, BCLK_TO_FS_MSK, 239 bclk_to_fs_ratio << 4); 240 snd_soc_update_bits(codec, STA529_MISC, PLAY_FREQ_RANGE_MSK, 241 play_freq_val << 4); 242 } else { 243 snd_soc_update_bits(codec, STA529_P2SCFG1, PDATA_LEN_MSK, 244 pdata << 6); 245 snd_soc_update_bits(codec, STA529_P2SCFG1, BCLK_TO_FS_MSK, 246 bclk_to_fs_ratio << 4); 247 snd_soc_update_bits(codec, STA529_MISC, CAP_FREQ_RANGE_MSK, 248 record_freq_val << 2); 249 } 250 251 return 0; 252 } 253 254 static int sta529_mute(struct snd_soc_dai *dai, int mute) 255 { 256 u8 val = 0; 257 258 if (mute) 259 val |= CODEC_MUTE_VAL; 260 261 snd_soc_update_bits(dai->codec, STA529_FFXCFG0, AUDIO_MUTE_MSK, val); 262 263 return 0; 264 } 265 266 static int sta529_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt) 267 { 268 struct snd_soc_codec *codec = codec_dai->codec; 269 u8 mode = 0; 270 271 /* interface format */ 272 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 273 case SND_SOC_DAIFMT_LEFT_J: 274 mode = LEFT_J_DATA_FORMAT; 275 break; 276 case SND_SOC_DAIFMT_I2S: 277 mode = I2S_DATA_FORMAT; 278 break; 279 case SND_SOC_DAIFMT_RIGHT_J: 280 mode = RIGHT_J_DATA_FORMAT; 281 break; 282 default: 283 return -EINVAL; 284 } 285 286 snd_soc_update_bits(codec, STA529_S2PCFG0, DATA_FORMAT_MSK, mode); 287 288 return 0; 289 } 290 291 static const struct snd_soc_dai_ops sta529_dai_ops = { 292 .hw_params = sta529_hw_params, 293 .set_fmt = sta529_set_dai_fmt, 294 .digital_mute = sta529_mute, 295 }; 296 297 static struct snd_soc_dai_driver sta529_dai = { 298 .name = "sta529-audio", 299 .playback = { 300 .stream_name = "Playback", 301 .channels_min = 2, 302 .channels_max = 2, 303 .rates = STA529_RATES, 304 .formats = STA529_FORMAT, 305 }, 306 .capture = { 307 .stream_name = "Capture", 308 .channels_min = 2, 309 .channels_max = 2, 310 .rates = STA529_RATES, 311 .formats = STA529_FORMAT, 312 }, 313 .ops = &sta529_dai_ops, 314 }; 315 316 static const struct snd_soc_codec_driver sta529_codec_driver = { 317 .set_bias_level = sta529_set_bias_level, 318 .suspend_bias_off = true, 319 320 .component_driver = { 321 .controls = sta529_snd_controls, 322 .num_controls = ARRAY_SIZE(sta529_snd_controls), 323 }, 324 }; 325 326 static const struct regmap_config sta529_regmap = { 327 .reg_bits = 8, 328 .val_bits = 8, 329 330 .max_register = STA529_MAX_REGISTER, 331 .readable_reg = sta529_readable, 332 333 .cache_type = REGCACHE_RBTREE, 334 .reg_defaults = sta529_reg_defaults, 335 .num_reg_defaults = ARRAY_SIZE(sta529_reg_defaults), 336 }; 337 338 static int sta529_i2c_probe(struct i2c_client *i2c, 339 const struct i2c_device_id *id) 340 { 341 struct sta529 *sta529; 342 int ret; 343 344 sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL); 345 if (!sta529) 346 return -ENOMEM; 347 348 sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap); 349 if (IS_ERR(sta529->regmap)) { 350 ret = PTR_ERR(sta529->regmap); 351 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); 352 return ret; 353 } 354 355 i2c_set_clientdata(i2c, sta529); 356 357 ret = snd_soc_register_codec(&i2c->dev, 358 &sta529_codec_driver, &sta529_dai, 1); 359 if (ret != 0) 360 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); 361 362 return ret; 363 } 364 365 static int sta529_i2c_remove(struct i2c_client *client) 366 { 367 snd_soc_unregister_codec(&client->dev); 368 369 return 0; 370 } 371 372 static const struct i2c_device_id sta529_i2c_id[] = { 373 { "sta529", 0 }, 374 { } 375 }; 376 MODULE_DEVICE_TABLE(i2c, sta529_i2c_id); 377 378 static const struct of_device_id sta529_of_match[] = { 379 { .compatible = "st,sta529", }, 380 { } 381 }; 382 MODULE_DEVICE_TABLE(of, sta529_of_match); 383 384 static struct i2c_driver sta529_i2c_driver = { 385 .driver = { 386 .name = "sta529", 387 .of_match_table = sta529_of_match, 388 }, 389 .probe = sta529_i2c_probe, 390 .remove = sta529_i2c_remove, 391 .id_table = sta529_i2c_id, 392 }; 393 394 module_i2c_driver(sta529_i2c_driver); 395 396 MODULE_DESCRIPTION("ASoC STA529 codec driver"); 397 MODULE_AUTHOR("Rajeev Kumar <rajeevkumar.linux@gmail.com>"); 398 MODULE_LICENSE("GPL"); 399