1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // JZ4740 CODEC driver 4 // 5 // Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de> 6 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/platform_device.h> 10 #include <linux/slab.h> 11 #include <linux/io.h> 12 #include <linux/regmap.h> 13 14 #include <linux/delay.h> 15 16 #include <sound/core.h> 17 #include <sound/pcm.h> 18 #include <sound/pcm_params.h> 19 #include <sound/initval.h> 20 #include <sound/soc.h> 21 #include <sound/tlv.h> 22 23 #define JZ4740_REG_CODEC_1 0x0 24 #define JZ4740_REG_CODEC_2 0x4 25 26 #define JZ4740_CODEC_1_LINE_ENABLE BIT(29) 27 #define JZ4740_CODEC_1_MIC_ENABLE BIT(28) 28 #define JZ4740_CODEC_1_SW1_ENABLE BIT(27) 29 #define JZ4740_CODEC_1_ADC_ENABLE BIT(26) 30 #define JZ4740_CODEC_1_SW2_ENABLE BIT(25) 31 #define JZ4740_CODEC_1_DAC_ENABLE BIT(24) 32 #define JZ4740_CODEC_1_VREF_DISABLE BIT(20) 33 #define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19) 34 #define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18) 35 #define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17) 36 #define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16) 37 #define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14) 38 #define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13) 39 #define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12) 40 #define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) | BIT(10)) 41 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9) 42 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8) 43 #define JZ4740_CODEC_1_SUSPEND BIT(1) 44 #define JZ4740_CODEC_1_RESET BIT(0) 45 46 #define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29 47 #define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28 48 #define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27 49 #define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26 50 #define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25 51 #define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24 52 #define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14 53 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8 54 55 #define JZ4740_CODEC_2_INPUT_VOLUME_MASK 0x1f0000 56 #define JZ4740_CODEC_2_SAMPLE_RATE_MASK 0x000f00 57 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK 0x000030 58 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK 0x000003 59 60 #define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET 16 61 #define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET 8 62 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET 4 63 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET 0 64 65 static const struct reg_default jz4740_codec_reg_defaults[] = { 66 { JZ4740_REG_CODEC_1, 0x021b2302 }, 67 { JZ4740_REG_CODEC_2, 0x00170803 }, 68 }; 69 70 struct jz4740_codec { 71 struct regmap *regmap; 72 }; 73 74 static const DECLARE_TLV_DB_RANGE(jz4740_mic_tlv, 75 0, 2, TLV_DB_SCALE_ITEM(0, 600, 0), 76 3, 3, TLV_DB_SCALE_ITEM(2000, 0, 0) 77 ); 78 79 static const DECLARE_TLV_DB_SCALE(jz4740_out_tlv, 0, 200, 0); 80 static const DECLARE_TLV_DB_SCALE(jz4740_in_tlv, -3450, 150, 0); 81 82 static const struct snd_kcontrol_new jz4740_codec_controls[] = { 83 SOC_SINGLE_TLV("Master Playback Volume", JZ4740_REG_CODEC_2, 84 JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0, 85 jz4740_out_tlv), 86 SOC_SINGLE_TLV("Master Capture Volume", JZ4740_REG_CODEC_2, 87 JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0, 88 jz4740_in_tlv), 89 SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1, 90 JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1), 91 SOC_SINGLE_TLV("Mic Capture Volume", JZ4740_REG_CODEC_2, 92 JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0, 93 jz4740_mic_tlv), 94 }; 95 96 static const struct snd_kcontrol_new jz4740_codec_output_controls[] = { 97 SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1, 98 JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0), 99 SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1, 100 JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0), 101 }; 102 103 static const struct snd_kcontrol_new jz4740_codec_input_controls[] = { 104 SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1, 105 JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0), 106 SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1, 107 JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0), 108 }; 109 110 static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = { 111 SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1, 112 JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0), 113 SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1, 114 JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0), 115 116 SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1, 117 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1, 118 jz4740_codec_output_controls, 119 ARRAY_SIZE(jz4740_codec_output_controls)), 120 121 SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0, 122 jz4740_codec_input_controls, 123 ARRAY_SIZE(jz4740_codec_input_controls)), 124 SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0), 125 126 SND_SOC_DAPM_OUTPUT("LOUT"), 127 SND_SOC_DAPM_OUTPUT("ROUT"), 128 129 SND_SOC_DAPM_INPUT("MIC"), 130 SND_SOC_DAPM_INPUT("LIN"), 131 SND_SOC_DAPM_INPUT("RIN"), 132 }; 133 134 static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = { 135 {"Line Input", NULL, "LIN"}, 136 {"Line Input", NULL, "RIN"}, 137 138 {"Input Mixer", "Line Capture Switch", "Line Input"}, 139 {"Input Mixer", "Mic Capture Switch", "MIC"}, 140 141 {"ADC", NULL, "Input Mixer"}, 142 143 {"Output Mixer", "Bypass Switch", "Input Mixer"}, 144 {"Output Mixer", "DAC Switch", "DAC"}, 145 146 {"LOUT", NULL, "Output Mixer"}, 147 {"ROUT", NULL, "Output Mixer"}, 148 }; 149 150 static int jz4740_codec_hw_params(struct snd_pcm_substream *substream, 151 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 152 { 153 struct jz4740_codec *jz4740_codec = snd_soc_component_get_drvdata(dai->component); 154 uint32_t val; 155 156 switch (params_rate(params)) { 157 case 8000: 158 val = 0; 159 break; 160 case 11025: 161 val = 1; 162 break; 163 case 12000: 164 val = 2; 165 break; 166 case 16000: 167 val = 3; 168 break; 169 case 22050: 170 val = 4; 171 break; 172 case 24000: 173 val = 5; 174 break; 175 case 32000: 176 val = 6; 177 break; 178 case 44100: 179 val = 7; 180 break; 181 case 48000: 182 val = 8; 183 break; 184 default: 185 return -EINVAL; 186 } 187 188 val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET; 189 190 regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_2, 191 JZ4740_CODEC_2_SAMPLE_RATE_MASK, val); 192 193 return 0; 194 } 195 196 static const struct snd_soc_dai_ops jz4740_codec_dai_ops = { 197 .hw_params = jz4740_codec_hw_params, 198 }; 199 200 static struct snd_soc_dai_driver jz4740_codec_dai = { 201 .name = "jz4740-hifi", 202 .playback = { 203 .stream_name = "Playback", 204 .channels_min = 2, 205 .channels_max = 2, 206 .rates = SNDRV_PCM_RATE_8000_48000, 207 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, 208 }, 209 .capture = { 210 .stream_name = "Capture", 211 .channels_min = 2, 212 .channels_max = 2, 213 .rates = SNDRV_PCM_RATE_8000_48000, 214 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, 215 }, 216 .ops = &jz4740_codec_dai_ops, 217 .symmetric_rates = 1, 218 }; 219 220 static void jz4740_codec_wakeup(struct regmap *regmap) 221 { 222 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, 223 JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET); 224 udelay(2); 225 226 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, 227 JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0); 228 229 regcache_sync(regmap); 230 } 231 232 static int jz4740_codec_set_bias_level(struct snd_soc_component *component, 233 enum snd_soc_bias_level level) 234 { 235 struct jz4740_codec *jz4740_codec = snd_soc_component_get_drvdata(component); 236 struct regmap *regmap = jz4740_codec->regmap; 237 unsigned int mask; 238 unsigned int value; 239 240 switch (level) { 241 case SND_SOC_BIAS_ON: 242 break; 243 case SND_SOC_BIAS_PREPARE: 244 mask = JZ4740_CODEC_1_VREF_DISABLE | 245 JZ4740_CODEC_1_VREF_AMP_DISABLE | 246 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 247 value = 0; 248 249 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 250 break; 251 case SND_SOC_BIAS_STANDBY: 252 /* The only way to clear the suspend flag is to reset the codec */ 253 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) 254 jz4740_codec_wakeup(regmap); 255 256 mask = JZ4740_CODEC_1_VREF_DISABLE | 257 JZ4740_CODEC_1_VREF_AMP_DISABLE | 258 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 259 value = JZ4740_CODEC_1_VREF_DISABLE | 260 JZ4740_CODEC_1_VREF_AMP_DISABLE | 261 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 262 263 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 264 break; 265 case SND_SOC_BIAS_OFF: 266 mask = JZ4740_CODEC_1_SUSPEND; 267 value = JZ4740_CODEC_1_SUSPEND; 268 269 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 270 regcache_mark_dirty(regmap); 271 break; 272 default: 273 break; 274 } 275 276 return 0; 277 } 278 279 static int jz4740_codec_dev_probe(struct snd_soc_component *component) 280 { 281 struct jz4740_codec *jz4740_codec = snd_soc_component_get_drvdata(component); 282 283 regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_1, 284 JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE); 285 286 return 0; 287 } 288 289 static const struct snd_soc_component_driver soc_codec_dev_jz4740_codec = { 290 .probe = jz4740_codec_dev_probe, 291 .set_bias_level = jz4740_codec_set_bias_level, 292 .controls = jz4740_codec_controls, 293 .num_controls = ARRAY_SIZE(jz4740_codec_controls), 294 .dapm_widgets = jz4740_codec_dapm_widgets, 295 .num_dapm_widgets = ARRAY_SIZE(jz4740_codec_dapm_widgets), 296 .dapm_routes = jz4740_codec_dapm_routes, 297 .num_dapm_routes = ARRAY_SIZE(jz4740_codec_dapm_routes), 298 .suspend_bias_off = 1, 299 .idle_bias_on = 1, 300 .use_pmdown_time = 1, 301 .endianness = 1, 302 .non_legacy_dai_naming = 1, 303 304 }; 305 306 static const struct regmap_config jz4740_codec_regmap_config = { 307 .reg_bits = 32, 308 .reg_stride = 4, 309 .val_bits = 32, 310 .max_register = JZ4740_REG_CODEC_2, 311 312 .reg_defaults = jz4740_codec_reg_defaults, 313 .num_reg_defaults = ARRAY_SIZE(jz4740_codec_reg_defaults), 314 .cache_type = REGCACHE_RBTREE, 315 }; 316 317 static int jz4740_codec_probe(struct platform_device *pdev) 318 { 319 int ret; 320 struct jz4740_codec *jz4740_codec; 321 struct resource *mem; 322 void __iomem *base; 323 324 jz4740_codec = devm_kzalloc(&pdev->dev, sizeof(*jz4740_codec), 325 GFP_KERNEL); 326 if (!jz4740_codec) 327 return -ENOMEM; 328 329 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 330 base = devm_ioremap_resource(&pdev->dev, mem); 331 if (IS_ERR(base)) 332 return PTR_ERR(base); 333 334 jz4740_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base, 335 &jz4740_codec_regmap_config); 336 if (IS_ERR(jz4740_codec->regmap)) 337 return PTR_ERR(jz4740_codec->regmap); 338 339 platform_set_drvdata(pdev, jz4740_codec); 340 341 ret = devm_snd_soc_register_component(&pdev->dev, 342 &soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1); 343 if (ret) 344 dev_err(&pdev->dev, "Failed to register codec\n"); 345 346 return ret; 347 } 348 349 #ifdef CONFIG_OF 350 static const struct of_device_id jz4740_codec_of_matches[] = { 351 { .compatible = "ingenic,jz4740-codec", }, 352 { } 353 }; 354 MODULE_DEVICE_TABLE(of, jz4740_codec_of_matches); 355 #endif 356 357 static struct platform_driver jz4740_codec_driver = { 358 .probe = jz4740_codec_probe, 359 .driver = { 360 .name = "jz4740-codec", 361 .of_match_table = of_match_ptr(jz4740_codec_of_matches), 362 }, 363 }; 364 365 module_platform_driver(jz4740_codec_driver); 366 367 MODULE_DESCRIPTION("JZ4740 SoC internal codec driver"); 368 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 369 MODULE_LICENSE("GPL v2"); 370 MODULE_ALIAS("platform:jz4740-codec"); 371