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 (codec->dapm.bias_level == 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 /* 183 * store the label for powers down audio subsystem for suspend.This is 184 * used by soc core layer 185 */ 186 codec->dapm.bias_level = level; 187 188 return 0; 189 190 } 191 192 static int sta529_hw_params(struct snd_pcm_substream *substream, 193 struct snd_pcm_hw_params *params, 194 struct snd_soc_dai *dai) 195 { 196 struct snd_soc_codec *codec = dai->codec; 197 int pdata, play_freq_val, record_freq_val; 198 int bclk_to_fs_ratio; 199 200 switch (params_width(params)) { 201 case 16: 202 pdata = 1; 203 bclk_to_fs_ratio = 0; 204 break; 205 case 24: 206 pdata = 2; 207 bclk_to_fs_ratio = 1; 208 break; 209 case 32: 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, DATA_FORMAT_MSK, 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 const struct snd_soc_codec_driver sta529_codec_driver = { 323 .set_bias_level = sta529_set_bias_level, 324 .suspend_bias_off = true, 325 326 .controls = sta529_snd_controls, 327 .num_controls = ARRAY_SIZE(sta529_snd_controls), 328 }; 329 330 static const struct regmap_config sta529_regmap = { 331 .reg_bits = 8, 332 .val_bits = 8, 333 334 .max_register = STA529_MAX_REGISTER, 335 .readable_reg = sta529_readable, 336 337 .cache_type = REGCACHE_RBTREE, 338 .reg_defaults = sta529_reg_defaults, 339 .num_reg_defaults = ARRAY_SIZE(sta529_reg_defaults), 340 }; 341 342 static int sta529_i2c_probe(struct i2c_client *i2c, 343 const struct i2c_device_id *id) 344 { 345 struct sta529 *sta529; 346 int ret; 347 348 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 349 return -EINVAL; 350 351 sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL); 352 if (!sta529) 353 return -ENOMEM; 354 355 sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap); 356 if (IS_ERR(sta529->regmap)) { 357 ret = PTR_ERR(sta529->regmap); 358 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); 359 return ret; 360 } 361 362 i2c_set_clientdata(i2c, sta529); 363 364 ret = snd_soc_register_codec(&i2c->dev, 365 &sta529_codec_driver, &sta529_dai, 1); 366 if (ret != 0) 367 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); 368 369 return ret; 370 } 371 372 static int sta529_i2c_remove(struct i2c_client *client) 373 { 374 snd_soc_unregister_codec(&client->dev); 375 376 return 0; 377 } 378 379 static const struct i2c_device_id sta529_i2c_id[] = { 380 { "sta529", 0 }, 381 { } 382 }; 383 MODULE_DEVICE_TABLE(i2c, sta529_i2c_id); 384 385 static struct i2c_driver sta529_i2c_driver = { 386 .driver = { 387 .name = "sta529", 388 .owner = THIS_MODULE, 389 }, 390 .probe = sta529_i2c_probe, 391 .remove = sta529_i2c_remove, 392 .id_table = sta529_i2c_id, 393 }; 394 395 module_i2c_driver(sta529_i2c_driver); 396 397 MODULE_DESCRIPTION("ASoC STA529 codec driver"); 398 MODULE_AUTHOR("Rajeev Kumar <rajeevkumar.linux@gmail.com>"); 399 MODULE_LICENSE("GPL"); 400