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 DECLARE_TLV_DB_RANGE(jz4740_mic_tlv, 82 0, 2, TLV_DB_SCALE_ITEM(0, 600, 0), 83 3, 3, TLV_DB_SCALE_ITEM(2000, 0, 0) 84 ); 85 86 static const DECLARE_TLV_DB_SCALE(jz4740_out_tlv, 0, 200, 0); 87 static const DECLARE_TLV_DB_SCALE(jz4740_in_tlv, -3450, 150, 0); 88 89 static const struct snd_kcontrol_new jz4740_codec_controls[] = { 90 SOC_SINGLE_TLV("Master Playback Volume", JZ4740_REG_CODEC_2, 91 JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0, 92 jz4740_out_tlv), 93 SOC_SINGLE_TLV("Master Capture Volume", JZ4740_REG_CODEC_2, 94 JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0, 95 jz4740_in_tlv), 96 SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1, 97 JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1), 98 SOC_SINGLE_TLV("Mic Capture Volume", JZ4740_REG_CODEC_2, 99 JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0, 100 jz4740_mic_tlv), 101 }; 102 103 static const struct snd_kcontrol_new jz4740_codec_output_controls[] = { 104 SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1, 105 JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0), 106 SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1, 107 JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0), 108 }; 109 110 static const struct snd_kcontrol_new jz4740_codec_input_controls[] = { 111 SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1, 112 JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0), 113 SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1, 114 JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0), 115 }; 116 117 static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = { 118 SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1, 119 JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0), 120 SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1, 121 JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0), 122 123 SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1, 124 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1, 125 jz4740_codec_output_controls, 126 ARRAY_SIZE(jz4740_codec_output_controls)), 127 128 SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0, 129 jz4740_codec_input_controls, 130 ARRAY_SIZE(jz4740_codec_input_controls)), 131 SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0), 132 133 SND_SOC_DAPM_OUTPUT("LOUT"), 134 SND_SOC_DAPM_OUTPUT("ROUT"), 135 136 SND_SOC_DAPM_INPUT("MIC"), 137 SND_SOC_DAPM_INPUT("LIN"), 138 SND_SOC_DAPM_INPUT("RIN"), 139 }; 140 141 static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = { 142 {"Line Input", NULL, "LIN"}, 143 {"Line Input", NULL, "RIN"}, 144 145 {"Input Mixer", "Line Capture Switch", "Line Input"}, 146 {"Input Mixer", "Mic Capture Switch", "MIC"}, 147 148 {"ADC", NULL, "Input Mixer"}, 149 150 {"Output Mixer", "Bypass Switch", "Input Mixer"}, 151 {"Output Mixer", "DAC Switch", "DAC"}, 152 153 {"LOUT", NULL, "Output Mixer"}, 154 {"ROUT", NULL, "Output Mixer"}, 155 }; 156 157 static int jz4740_codec_hw_params(struct snd_pcm_substream *substream, 158 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 159 { 160 struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(dai->codec); 161 uint32_t val; 162 163 switch (params_rate(params)) { 164 case 8000: 165 val = 0; 166 break; 167 case 11025: 168 val = 1; 169 break; 170 case 12000: 171 val = 2; 172 break; 173 case 16000: 174 val = 3; 175 break; 176 case 22050: 177 val = 4; 178 break; 179 case 24000: 180 val = 5; 181 break; 182 case 32000: 183 val = 6; 184 break; 185 case 44100: 186 val = 7; 187 break; 188 case 48000: 189 val = 8; 190 break; 191 default: 192 return -EINVAL; 193 } 194 195 val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET; 196 197 regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_2, 198 JZ4740_CODEC_2_SAMPLE_RATE_MASK, val); 199 200 return 0; 201 } 202 203 static const struct snd_soc_dai_ops jz4740_codec_dai_ops = { 204 .hw_params = jz4740_codec_hw_params, 205 }; 206 207 static struct snd_soc_dai_driver jz4740_codec_dai = { 208 .name = "jz4740-hifi", 209 .playback = { 210 .stream_name = "Playback", 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 .capture = { 217 .stream_name = "Capture", 218 .channels_min = 2, 219 .channels_max = 2, 220 .rates = SNDRV_PCM_RATE_8000_48000, 221 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, 222 }, 223 .ops = &jz4740_codec_dai_ops, 224 .symmetric_rates = 1, 225 }; 226 227 static void jz4740_codec_wakeup(struct regmap *regmap) 228 { 229 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, 230 JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET); 231 udelay(2); 232 233 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, 234 JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0); 235 236 regcache_sync(regmap); 237 } 238 239 static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec, 240 enum snd_soc_bias_level level) 241 { 242 struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); 243 struct regmap *regmap = jz4740_codec->regmap; 244 unsigned int mask; 245 unsigned int value; 246 247 switch (level) { 248 case SND_SOC_BIAS_ON: 249 break; 250 case SND_SOC_BIAS_PREPARE: 251 mask = JZ4740_CODEC_1_VREF_DISABLE | 252 JZ4740_CODEC_1_VREF_AMP_DISABLE | 253 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 254 value = 0; 255 256 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 257 break; 258 case SND_SOC_BIAS_STANDBY: 259 /* The only way to clear the suspend flag is to reset the codec */ 260 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) 261 jz4740_codec_wakeup(regmap); 262 263 mask = JZ4740_CODEC_1_VREF_DISABLE | 264 JZ4740_CODEC_1_VREF_AMP_DISABLE | 265 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 266 value = JZ4740_CODEC_1_VREF_DISABLE | 267 JZ4740_CODEC_1_VREF_AMP_DISABLE | 268 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; 269 270 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 271 break; 272 case SND_SOC_BIAS_OFF: 273 mask = JZ4740_CODEC_1_SUSPEND; 274 value = JZ4740_CODEC_1_SUSPEND; 275 276 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value); 277 regcache_mark_dirty(regmap); 278 break; 279 default: 280 break; 281 } 282 283 return 0; 284 } 285 286 static int jz4740_codec_dev_probe(struct snd_soc_codec *codec) 287 { 288 struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); 289 290 regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_1, 291 JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE); 292 293 return 0; 294 } 295 296 static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = { 297 .probe = jz4740_codec_dev_probe, 298 .set_bias_level = jz4740_codec_set_bias_level, 299 .suspend_bias_off = true, 300 301 .controls = jz4740_codec_controls, 302 .num_controls = ARRAY_SIZE(jz4740_codec_controls), 303 .dapm_widgets = jz4740_codec_dapm_widgets, 304 .num_dapm_widgets = ARRAY_SIZE(jz4740_codec_dapm_widgets), 305 .dapm_routes = jz4740_codec_dapm_routes, 306 .num_dapm_routes = ARRAY_SIZE(jz4740_codec_dapm_routes), 307 }; 308 309 static const struct regmap_config jz4740_codec_regmap_config = { 310 .reg_bits = 32, 311 .reg_stride = 4, 312 .val_bits = 32, 313 .max_register = JZ4740_REG_CODEC_2, 314 315 .reg_defaults = jz4740_codec_reg_defaults, 316 .num_reg_defaults = ARRAY_SIZE(jz4740_codec_reg_defaults), 317 .cache_type = REGCACHE_RBTREE, 318 }; 319 320 static int jz4740_codec_probe(struct platform_device *pdev) 321 { 322 int ret; 323 struct jz4740_codec *jz4740_codec; 324 struct resource *mem; 325 void __iomem *base; 326 327 jz4740_codec = devm_kzalloc(&pdev->dev, sizeof(*jz4740_codec), 328 GFP_KERNEL); 329 if (!jz4740_codec) 330 return -ENOMEM; 331 332 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 333 base = devm_ioremap_resource(&pdev->dev, mem); 334 if (IS_ERR(base)) 335 return PTR_ERR(base); 336 337 jz4740_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base, 338 &jz4740_codec_regmap_config); 339 if (IS_ERR(jz4740_codec->regmap)) 340 return PTR_ERR(jz4740_codec->regmap); 341 342 platform_set_drvdata(pdev, jz4740_codec); 343 344 ret = snd_soc_register_codec(&pdev->dev, 345 &soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1); 346 if (ret) 347 dev_err(&pdev->dev, "Failed to register codec\n"); 348 349 return ret; 350 } 351 352 static int jz4740_codec_remove(struct platform_device *pdev) 353 { 354 snd_soc_unregister_codec(&pdev->dev); 355 356 return 0; 357 } 358 359 static struct platform_driver jz4740_codec_driver = { 360 .probe = jz4740_codec_probe, 361 .remove = jz4740_codec_remove, 362 .driver = { 363 .name = "jz4740-codec", 364 }, 365 }; 366 367 module_platform_driver(jz4740_codec_driver); 368 369 MODULE_DESCRIPTION("JZ4740 SoC internal codec driver"); 370 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 371 MODULE_LICENSE("GPL v2"); 372 MODULE_ALIAS("platform:jz4740-codec"); 373