Rajeev Kumar | 3be58db | 2012-07-04 16:11:12 +0530 | [diff] [blame^] | 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 | 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 __devinit 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 | dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); |
| 401 | return PTR_ERR(sta529->regmap); |
| 402 | } |
| 403 | |
| 404 | i2c_set_clientdata(i2c, sta529); |
| 405 | |
| 406 | ret = snd_soc_register_codec(&i2c->dev, |
| 407 | &sta529_codec_driver, &sta529_dai, 1); |
| 408 | if (ret != 0) |
| 409 | dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); |
| 410 | |
| 411 | return ret; |
| 412 | } |
| 413 | |
| 414 | static int __devexit sta529_i2c_remove(struct i2c_client *client) |
| 415 | { |
| 416 | snd_soc_unregister_codec(&client->dev); |
| 417 | |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | static const struct i2c_device_id sta529_i2c_id[] = { |
| 422 | { "sta529", 0 }, |
| 423 | { } |
| 424 | }; |
| 425 | MODULE_DEVICE_TABLE(i2c, sta529_i2c_id); |
| 426 | |
| 427 | static struct i2c_driver sta529_i2c_driver = { |
| 428 | .driver = { |
| 429 | .name = "sta529", |
| 430 | .owner = THIS_MODULE, |
| 431 | }, |
| 432 | .probe = sta529_i2c_probe, |
| 433 | .remove = __devexit_p(sta529_i2c_remove), |
| 434 | .id_table = sta529_i2c_id, |
| 435 | }; |
| 436 | |
| 437 | module_i2c_driver(sta529_i2c_driver); |
| 438 | |
| 439 | MODULE_DESCRIPTION("ASoC STA529 codec driver"); |
| 440 | MODULE_AUTHOR("Rajeev Kumar <rajeev-dlh.kumar@st.com>"); |
| 441 | MODULE_LICENSE("GPL"); |