1 /* 2 * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * You should have received a copy of the GNU General Public License along 9 * with this program; if not, write to the Free Software Foundation, Inc., 10 * 675 Mass Ave, Cambridge, MA 02139, USA. 11 * 12 */ 13 14 #include <linux/kernel.h> 15 #include <linux/module.h> 16 #include <linux/platform_device.h> 17 #include <linux/slab.h> 18 #include <linux/io.h> 19 #include <linux/regmap.h> 20 21 #include <linux/delay.h> 22 23 #include <sound/core.h> 24 #include <sound/pcm.h> 25 #include <sound/pcm_params.h> 26 #include <sound/initval.h> 27 #include <sound/soc.h> 28 #include <sound/tlv.h> 29 30 #define JZ4740_REG_CODEC_1 0x0 31 #define JZ4740_REG_CODEC_2 0x4 32 33 #define JZ4740_CODEC_1_LINE_ENABLE BIT(29) 34 #define JZ4740_CODEC_1_MIC_ENABLE BIT(28) 35 #define JZ4740_CODEC_1_SW1_ENABLE BIT(27) 36 #define JZ4740_CODEC_1_ADC_ENABLE BIT(26) 37 #define JZ4740_CODEC_1_SW2_ENABLE BIT(25) 38 #define JZ4740_CODEC_1_DAC_ENABLE BIT(24) 39 #define JZ4740_CODEC_1_VREF_DISABLE BIT(20) 40 #define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19) 41 #define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18) 42 #define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17) 43 #define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16) 44 #define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14) 45 #define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13) 46 #define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12) 47 #define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) | BIT(10)) 48 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9) 49 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8) 50 #define JZ4740_CODEC_1_SUSPEND BIT(1) 51 #define JZ4740_CODEC_1_RESET BIT(0) 52 53 #define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29 54 #define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28 55 #define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27 56 #define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26 57 #define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25 58 #define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24 59 #define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14 60 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8 61 62 #define JZ4740_CODEC_2_INPUT_VOLUME_MASK 0x1f0000 63 #define JZ4740_CODEC_2_SAMPLE_RATE_MASK 0x000f00 64 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK 0x000030 65 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK 0x000003 66 67 #define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET 16 68 #define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET 8 69 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET 4 70 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET 0 71 72 static const struct reg_default jz4740_codec_reg_defaults[] = { 73 { JZ4740_REG_CODEC_1, 0x021b2302 }, 74 { JZ4740_REG_CODEC_2, 0x00170803 }, 75 }; 76 77 struct jz4740_codec { 78 struct regmap *regmap; 79 }; 80 81 static const unsigned int jz4740_mic_tlv[] = { 82 TLV_DB_RANGE_HEAD(2), 83 0, 2, TLV_DB_SCALE_ITEM(0, 600, 0), 84 3, 3, TLV_DB_SCALE_ITEM(2000, 0, 0), 85 }; 86 87 static const DECLARE_TLV_DB_SCALE(jz4740_out_tlv, 0, 200, 0); 88 static const DECLARE_TLV_DB_SCALE(jz4740_in_tlv, -3450, 150, 0); 89 90 static const struct snd_kcontrol_new jz4740_codec_controls[] = { 91 SOC_SINGLE_TLV("Master Playback Volume", JZ4740_REG_CODEC_2, 92 JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0, 93 jz4740_out_tlv), 94 SOC_SINGLE_TLV("Master Capture Volume", JZ4740_REG_CODEC_2, 95 JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0, 96 jz4740_in_tlv), 97 SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1, 98 JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1), 99 SOC_SINGLE_TLV("Mic Capture Volume", JZ4740_REG_CODEC_2, 100 JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0, 101 jz4740_mic_tlv), 102 }; 103 104 static const struct snd_kcontrol_new jz4740_codec_output_controls[] = { 105 SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1, 106 JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0), 107 SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1, 108 JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0), 109 }; 110 111 static const struct snd_kcontrol_new jz4740_codec_input_controls[] = { 112 SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1, 113 JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0), 114 SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1, 115 JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0), 116 }; 117 118 static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = { 119 SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1, 120 JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0), 121 SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1, 122 JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0), 123 124 SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1, 125 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1, 126 jz4740_codec_output_controls, 127 ARRAY_SIZE(jz4740_codec_output_controls)), 128 129 SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0, 130 jz4740_codec_input_controls, 131 ARRAY_SIZE(jz4740_codec_input_controls)), 132 SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0), 133 134 SND_SOC_DAPM_OUTPUT("LOUT"), 135 SND_SOC_DAPM_OUTPUT("ROUT"), 136 137 SND_SOC_DAPM_INPUT("MIC"), 138 SND_SOC_DAPM_INPUT("LIN"), 139 SND_SOC_DAPM_INPUT("RIN"), 140 }; 141 142 static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = { 143 {"Line Input", NULL, "LIN"}, 144 {"Line Input", NULL, "RIN"}, 145 146 {"Input Mixer", "Line Capture Switch", "Line Input"}, 147 {"Input Mixer", "Mic Capture Switch", "MIC"}, 148 149 {"ADC", NULL, "Input Mixer"}, 150 151 {"Output Mixer", "Bypass Switch", "Input Mixer"}, 152 {"Output Mixer", "DAC Switch", "DAC"}, 153 154 {"LOUT", NULL, "Output Mixer"}, 155 {"ROUT", NULL, "Output Mixer"}, 156 }; 157 158 static int jz4740_codec_hw_params(struct snd_pcm_substream *substream, 159 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 160 { 161 struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(dai->codec); 162 uint32_t val; 163 164 switch (params_rate(params)) { 165 case 8000: 166 val = 0; 167 break; 168 case 11025: 169 val = 1; 170 break; 171 case 12000: 172 val = 2; 173 break; 174 case 16000: 175 val = 3; 176 break; 177 case 22050: 178 val = 4; 179 break; 180 case 24000: 181 val = 5; 182 break; 183 case 32000: 184 val = 6; 185 break; 186 case 44100: 187 val = 7; 188 break; 189 case 48000: 190 val = 8; 191 break; 192 default: 193 return -EINVAL; 194 } 195 196 val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET; 197 198 regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_2, 199 JZ4740_CODEC_2_SAMPLE_RATE_MASK, val); 200 201 return 0; 202 } 203 204 static const struct snd_soc_dai_ops jz4740_codec_dai_ops = { 205 .hw_params = jz4740_codec_hw_params, 206 }; 207 208 static struct snd_soc_dai_driver jz4740_codec_dai = { 209 .name = "jz4740-hifi", 210 .playback = { 211 .stream_name = "Playback", 212 .channels_min = 2, 213 .channels_max = 2, 214 .rates = SNDRV_PCM_RATE_8000_48000, 215 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, 216 }, 217 .capture = { 218 .stream_name = "Capture", 219 .channels_min = 2, 220 .channels_max = 2, 221 .rates = SNDRV_PCM_RATE_8000_48000, 222 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, 223 }, 224 .ops = &jz4740_codec_dai_ops, 225 .symmetric_rates = 1, 226 }; 227 228 static void jz4740_codec_wakeup(struct regmap *regmap) 229 { 230 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, 231 JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET); 232 udelay(2); 233 234 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, 235 JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0); 236 237 regcache_sync(regmap); 238 } 239 240 static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec, 241 enum snd_soc_bias_level level) 242 { 243 struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); 244 struct regmap *regmap = jz4740_codec->regmap; 245 unsigned int mask; 246 unsigned int value; 247 248 switch (level) { 249 case SND_SOC_BIAS_ON: 250 break; 251 case SND_SOC_BIAS_PREPARE: 252 mask = JZ4740_CODEC_1_VREF_DISABLE | 253 JZ4740_CODEC_1_VREF_AMP_DISABLE | 254 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 255 value = 0; 256 257 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 258 break; 259 case SND_SOC_BIAS_STANDBY: 260 /* The only way to clear the suspend flag is to reset the codec */ 261 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) 262 jz4740_codec_wakeup(regmap); 263 264 mask = JZ4740_CODEC_1_VREF_DISABLE | 265 JZ4740_CODEC_1_VREF_AMP_DISABLE | 266 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 267 value = JZ4740_CODEC_1_VREF_DISABLE | 268 JZ4740_CODEC_1_VREF_AMP_DISABLE | 269 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 270 271 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 272 break; 273 case SND_SOC_BIAS_OFF: 274 mask = JZ4740_CODEC_1_SUSPEND; 275 value = JZ4740_CODEC_1_SUSPEND; 276 277 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 278 regcache_mark_dirty(regmap); 279 break; 280 default: 281 break; 282 } 283 284 codec->dapm.bias_level = level; 285 286 return 0; 287 } 288 289 static int jz4740_codec_dev_probe(struct snd_soc_codec *codec) 290 { 291 struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); 292 293 regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_1, 294 JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE); 295 296 jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 297 298 return 0; 299 } 300 301 static int jz4740_codec_dev_remove(struct snd_soc_codec *codec) 302 { 303 jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF); 304 305 return 0; 306 } 307 308 #ifdef CONFIG_PM_SLEEP 309 310 static int jz4740_codec_suspend(struct snd_soc_codec *codec) 311 { 312 return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF); 313 } 314 315 static int jz4740_codec_resume(struct snd_soc_codec *codec) 316 { 317 return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 318 } 319 320 #else 321 #define jz4740_codec_suspend NULL 322 #define jz4740_codec_resume NULL 323 #endif 324 325 static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = { 326 .probe = jz4740_codec_dev_probe, 327 .remove = jz4740_codec_dev_remove, 328 .suspend = jz4740_codec_suspend, 329 .resume = jz4740_codec_resume, 330 .set_bias_level = jz4740_codec_set_bias_level, 331 332 .controls = jz4740_codec_controls, 333 .num_controls = ARRAY_SIZE(jz4740_codec_controls), 334 .dapm_widgets = jz4740_codec_dapm_widgets, 335 .num_dapm_widgets = ARRAY_SIZE(jz4740_codec_dapm_widgets), 336 .dapm_routes = jz4740_codec_dapm_routes, 337 .num_dapm_routes = ARRAY_SIZE(jz4740_codec_dapm_routes), 338 }; 339 340 static const struct regmap_config jz4740_codec_regmap_config = { 341 .reg_bits = 32, 342 .reg_stride = 4, 343 .val_bits = 32, 344 .max_register = JZ4740_REG_CODEC_2, 345 346 .reg_defaults = jz4740_codec_reg_defaults, 347 .num_reg_defaults = ARRAY_SIZE(jz4740_codec_reg_defaults), 348 .cache_type = REGCACHE_RBTREE, 349 }; 350 351 static int jz4740_codec_probe(struct platform_device *pdev) 352 { 353 int ret; 354 struct jz4740_codec *jz4740_codec; 355 struct resource *mem; 356 void __iomem *base; 357 358 jz4740_codec = devm_kzalloc(&pdev->dev, sizeof(*jz4740_codec), 359 GFP_KERNEL); 360 if (!jz4740_codec) 361 return -ENOMEM; 362 363 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 364 base = devm_ioremap_resource(&pdev->dev, mem); 365 if (IS_ERR(base)) 366 return PTR_ERR(base); 367 368 jz4740_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base, 369 &jz4740_codec_regmap_config); 370 if (IS_ERR(jz4740_codec->regmap)) 371 return PTR_ERR(jz4740_codec->regmap); 372 373 platform_set_drvdata(pdev, jz4740_codec); 374 375 ret = snd_soc_register_codec(&pdev->dev, 376 &soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1); 377 if (ret) 378 dev_err(&pdev->dev, "Failed to register codec\n"); 379 380 return ret; 381 } 382 383 static int jz4740_codec_remove(struct platform_device *pdev) 384 { 385 snd_soc_unregister_codec(&pdev->dev); 386 387 return 0; 388 } 389 390 static struct platform_driver jz4740_codec_driver = { 391 .probe = jz4740_codec_probe, 392 .remove = jz4740_codec_remove, 393 .driver = { 394 .name = "jz4740-codec", 395 .owner = THIS_MODULE, 396 }, 397 }; 398 399 module_platform_driver(jz4740_codec_driver); 400 401 MODULE_DESCRIPTION("JZ4740 SoC internal codec driver"); 402 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 403 MODULE_LICENSE("GPL v2"); 404 MODULE_ALIAS("platform:jz4740-codec"); 405