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_component *component, enum 155 snd_soc_bias_level level) 156 { 157 struct sta529 *sta529 = snd_soc_component_get_drvdata(component); 158 struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component); 159 160 switch (level) { 161 case SND_SOC_BIAS_ON: 162 case SND_SOC_BIAS_PREPARE: 163 snd_soc_component_update_bits(component, STA529_FFXCFG0, POWER_CNTLMSAK, 164 POWER_UP); 165 snd_soc_component_update_bits(component, STA529_MISC, FFX_CLK_MSK, 166 FFX_CLK_ENB); 167 break; 168 case SND_SOC_BIAS_STANDBY: 169 if (snd_soc_dapm_get_bias_level(dapm) == SND_SOC_BIAS_OFF) 170 regcache_sync(sta529->regmap); 171 snd_soc_component_update_bits(component, STA529_FFXCFG0, 172 POWER_CNTLMSAK, POWER_STDBY); 173 /* Making FFX output to zero */ 174 snd_soc_component_update_bits(component, STA529_FFXCFG0, FFX_MASK, 175 FFX_OFF); 176 snd_soc_component_update_bits(component, STA529_MISC, FFX_CLK_MSK, 177 FFX_CLK_DIS); 178 break; 179 case SND_SOC_BIAS_OFF: 180 break; 181 } 182 183 return 0; 184 185 } 186 187 static int sta529_hw_params(struct snd_pcm_substream *substream, 188 struct snd_pcm_hw_params *params, 189 struct snd_soc_dai *dai) 190 { 191 struct snd_soc_component *component = dai->component; 192 int pdata, play_freq_val, record_freq_val; 193 int bclk_to_fs_ratio; 194 195 switch (params_width(params)) { 196 case 16: 197 pdata = 1; 198 bclk_to_fs_ratio = 0; 199 break; 200 case 24: 201 pdata = 2; 202 bclk_to_fs_ratio = 1; 203 break; 204 case 32: 205 pdata = 3; 206 bclk_to_fs_ratio = 2; 207 break; 208 default: 209 dev_err(component->dev, "Unsupported format\n"); 210 return -EINVAL; 211 } 212 213 switch (params_rate(params)) { 214 case 8000: 215 case 11025: 216 play_freq_val = 0; 217 record_freq_val = 2; 218 break; 219 case 16000: 220 case 22050: 221 play_freq_val = 1; 222 record_freq_val = 0; 223 break; 224 225 case 32000: 226 case 44100: 227 case 48000: 228 play_freq_val = 2; 229 record_freq_val = 0; 230 break; 231 default: 232 dev_err(component->dev, "Unsupported rate\n"); 233 return -EINVAL; 234 } 235 236 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 237 snd_soc_component_update_bits(component, STA529_S2PCFG1, PDATA_LEN_MSK, 238 pdata << 6); 239 snd_soc_component_update_bits(component, STA529_S2PCFG1, BCLK_TO_FS_MSK, 240 bclk_to_fs_ratio << 4); 241 snd_soc_component_update_bits(component, STA529_MISC, PLAY_FREQ_RANGE_MSK, 242 play_freq_val << 4); 243 } else { 244 snd_soc_component_update_bits(component, STA529_P2SCFG1, PDATA_LEN_MSK, 245 pdata << 6); 246 snd_soc_component_update_bits(component, STA529_P2SCFG1, BCLK_TO_FS_MSK, 247 bclk_to_fs_ratio << 4); 248 snd_soc_component_update_bits(component, STA529_MISC, CAP_FREQ_RANGE_MSK, 249 record_freq_val << 2); 250 } 251 252 return 0; 253 } 254 255 static int sta529_mute(struct snd_soc_dai *dai, int mute, int direction) 256 { 257 u8 val = 0; 258 259 if (mute) 260 val |= CODEC_MUTE_VAL; 261 262 snd_soc_component_update_bits(dai->component, STA529_FFXCFG0, AUDIO_MUTE_MSK, val); 263 264 return 0; 265 } 266 267 static int sta529_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt) 268 { 269 struct snd_soc_component *component = codec_dai->component; 270 u8 mode = 0; 271 272 /* interface format */ 273 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 274 case SND_SOC_DAIFMT_LEFT_J: 275 mode = LEFT_J_DATA_FORMAT; 276 break; 277 case SND_SOC_DAIFMT_I2S: 278 mode = I2S_DATA_FORMAT; 279 break; 280 case SND_SOC_DAIFMT_RIGHT_J: 281 mode = RIGHT_J_DATA_FORMAT; 282 break; 283 default: 284 return -EINVAL; 285 } 286 287 snd_soc_component_update_bits(component, STA529_S2PCFG0, DATA_FORMAT_MSK, mode); 288 289 return 0; 290 } 291 292 static const struct snd_soc_dai_ops sta529_dai_ops = { 293 .hw_params = sta529_hw_params, 294 .set_fmt = sta529_set_dai_fmt, 295 .mute_stream = sta529_mute, 296 .no_capture_mute = 1, 297 }; 298 299 static struct snd_soc_dai_driver sta529_dai = { 300 .name = "sta529-audio", 301 .playback = { 302 .stream_name = "Playback", 303 .channels_min = 2, 304 .channels_max = 2, 305 .rates = STA529_RATES, 306 .formats = STA529_FORMAT, 307 }, 308 .capture = { 309 .stream_name = "Capture", 310 .channels_min = 2, 311 .channels_max = 2, 312 .rates = STA529_RATES, 313 .formats = STA529_FORMAT, 314 }, 315 .ops = &sta529_dai_ops, 316 }; 317 318 static const struct snd_soc_component_driver sta529_component_driver = { 319 .set_bias_level = sta529_set_bias_level, 320 .controls = sta529_snd_controls, 321 .num_controls = ARRAY_SIZE(sta529_snd_controls), 322 .suspend_bias_off = 1, 323 .idle_bias_on = 1, 324 .use_pmdown_time = 1, 325 .endianness = 1, 326 }; 327 328 static const struct regmap_config sta529_regmap = { 329 .reg_bits = 8, 330 .val_bits = 8, 331 332 .max_register = STA529_MAX_REGISTER, 333 .readable_reg = sta529_readable, 334 335 .cache_type = REGCACHE_MAPLE, 336 .reg_defaults = sta529_reg_defaults, 337 .num_reg_defaults = ARRAY_SIZE(sta529_reg_defaults), 338 }; 339 340 static int sta529_i2c_probe(struct i2c_client *i2c) 341 { 342 struct sta529 *sta529; 343 int ret; 344 345 sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL); 346 if (!sta529) 347 return -ENOMEM; 348 349 sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap); 350 if (IS_ERR(sta529->regmap)) { 351 ret = PTR_ERR(sta529->regmap); 352 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); 353 return ret; 354 } 355 356 i2c_set_clientdata(i2c, sta529); 357 358 ret = devm_snd_soc_register_component(&i2c->dev, 359 &sta529_component_driver, &sta529_dai, 1); 360 if (ret != 0) 361 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); 362 363 return ret; 364 } 365 366 static const struct i2c_device_id sta529_i2c_id[] = { 367 { "sta529" }, 368 { } 369 }; 370 MODULE_DEVICE_TABLE(i2c, sta529_i2c_id); 371 372 static const struct of_device_id sta529_of_match[] = { 373 { .compatible = "st,sta529", }, 374 { } 375 }; 376 MODULE_DEVICE_TABLE(of, sta529_of_match); 377 378 static struct i2c_driver sta529_i2c_driver = { 379 .driver = { 380 .name = "sta529", 381 .of_match_table = sta529_of_match, 382 }, 383 .probe = sta529_i2c_probe, 384 .id_table = sta529_i2c_id, 385 }; 386 387 module_i2c_driver(sta529_i2c_driver); 388 389 MODULE_DESCRIPTION("ASoC STA529 codec driver"); 390 MODULE_AUTHOR("Rajeev Kumar <rajeevkumar.linux@gmail.com>"); 391 MODULE_LICENSE("GPL"); 392