sound/soc/codecs/rt5682-i2c.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // rt5682.c  --  RT5682 ALSA SoC audio component driver
   4 //
   5 // Copyright 2018 Realtek Semiconductor Corp.
   6 // Author: Bard Liao <bardliao@realtek.com>
   7 //
   8
   9 #include <linux/module.h>
  10 #include <linux/moduleparam.h>
  11 #include <linux/init.h>
  12 #include <linux/delay.h>
  13 #include <linux/pm.h>
  14 #include <linux/pm_runtime.h>
  15 #include <linux/i2c.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/spi/spi.h>
  18 #include <linux/acpi.h>
  19 #include <linux/gpio.h>
  20 #include <linux/of_gpio.h>
  21 #include <linux/mutex.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/jack.h>
  26 #include <sound/soc.h>
  27 #include <sound/soc-dapm.h>
  28 #include <sound/initval.h>
  29 #include <sound/tlv.h>
  30 #include <sound/rt5682.h>
  31
  32 #include "rl6231.h"
  33 #include "rt5682.h"
  34
  35 static const struct rt5682_platform_data i2s_default_platform_data = {
  36         .dmic1_data_pin = RT5682_DMIC1_DATA_GPIO2,
  37         .dmic1_clk_pin = RT5682_DMIC1_CLK_GPIO3,
  38         .jd_src = RT5682_JD1,
  39         .btndet_delay = 16,
  40         .dai_clk_names[RT5682_DAI_WCLK_IDX] = "rt5682-dai-wclk",
  41         .dai_clk_names[RT5682_DAI_BCLK_IDX] = "rt5682-dai-bclk",
  42 };
  43
  44 static const struct regmap_config rt5682_regmap = {
  45         .reg_bits = 16,
  46         .val_bits = 16,
  47         .max_register = RT5682_I2C_MODE,
  48         .volatile_reg = rt5682_volatile_register,
  49         .readable_reg = rt5682_readable_register,
  50         .cache_type = REGCACHE_RBTREE,
  51         .reg_defaults = rt5682_reg,
  52         .num_reg_defaults = RT5682_REG_NUM,
  53         .use_single_read = true,
  54         .use_single_write = true,
  55 };
  56
  57 static void rt5682_jd_check_handler(struct work_struct *work)
  58 {
  59         struct rt5682_priv *rt5682 = container_of(work, struct rt5682_priv,
  60                 jd_check_work.work);
  61
  62         if (snd_soc_component_read(rt5682->component, RT5682_AJD1_CTRL)
  63                 & RT5682_JDH_RS_MASK) {
  64                 /* jack out */
  65                 rt5682->jack_type = rt5682_headset_detect(rt5682->component, 0);
  66
  67                 snd_soc_jack_report(rt5682->hs_jack, rt5682->jack_type,
  68                         SND_JACK_HEADSET |
  69                         SND_JACK_BTN_0 | SND_JACK_BTN_1 |
  70                         SND_JACK_BTN_2 | SND_JACK_BTN_3);
  71         } else {
  72                 schedule_delayed_work(&rt5682->jd_check_work, 500);
  73         }
  74 }
  75
  76 static irqreturn_t rt5682_irq(int irq, void *data)
  77 {
  78         struct rt5682_priv *rt5682 = data;
  79
  80         mod_delayed_work(system_power_efficient_wq,
  81                 &rt5682->jack_detect_work, msecs_to_jiffies(250));
  82
  83         return IRQ_HANDLED;
  84 }
  85
  86 static struct snd_soc_dai_driver rt5682_dai[] = {
  87         {
  88                 .name = "rt5682-aif1",
  89                 .id = RT5682_AIF1,
  90                 .playback = {
  91                         .stream_name = "AIF1 Playback",
  92                         .channels_min = 1,
  93                         .channels_max = 2,
  94                         .rates = RT5682_STEREO_RATES,
  95                         .formats = RT5682_FORMATS,
  96                 },
  97                 .capture = {
  98                         .stream_name = "AIF1 Capture",
  99                         .channels_min = 1,
 100                         .channels_max = 2,
 101                         .rates = RT5682_STEREO_RATES,
 102                         .formats = RT5682_FORMATS,
 103                 },
 104                 .ops = &rt5682_aif1_dai_ops,
 105         },
 106         {
 107                 .name = "rt5682-aif2",
 108                 .id = RT5682_AIF2,
 109                 .capture = {
 110                         .stream_name = "AIF2 Capture",
 111                         .channels_min = 1,
 112                         .channels_max = 2,
 113                         .rates = RT5682_STEREO_RATES,
 114                         .formats = RT5682_FORMATS,
 115                 },
 116                 .ops = &rt5682_aif2_dai_ops,
 117         },
 118 };
 119
 120 static void rt5682_i2c_disable_regulators(void *data)
 121 {
 122         struct rt5682_priv *rt5682 = data;
 123
 124         regulator_bulk_disable(ARRAY_SIZE(rt5682->supplies), rt5682->supplies);
 125 }
 126
 127 static int rt5682_i2c_probe(struct i2c_client *i2c,
 128                 const struct i2c_device_id *id)
 129 {
 130         struct rt5682_platform_data *pdata = dev_get_platdata(&i2c->dev);
 131         struct rt5682_priv *rt5682;
 132         int i, ret;
 133         unsigned int val;
 134
 135         rt5682 = devm_kzalloc(&i2c->dev, sizeof(struct rt5682_priv),
 136                 GFP_KERNEL);
 137         if (!rt5682)
 138                 return -ENOMEM;
 139
 140         i2c_set_clientdata(i2c, rt5682);
 141
 142         rt5682->pdata = i2s_default_platform_data;
 143
 144         if (pdata)
 145                 rt5682->pdata = *pdata;
 146         else
 147                 rt5682_parse_dt(rt5682, &i2c->dev);
 148
 149         rt5682->regmap = devm_regmap_init_i2c(i2c, &rt5682_regmap);
 150         if (IS_ERR(rt5682->regmap)) {
 151                 ret = PTR_ERR(rt5682->regmap);
 152                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
 153                         ret);
 154                 return ret;
 155         }
 156
 157         for (i = 0; i < ARRAY_SIZE(rt5682->supplies); i++)
 158                 rt5682->supplies[i].supply = rt5682_supply_names[i];
 159
 160         ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(rt5682->supplies),
 161                                       rt5682->supplies);
 162         if (ret) {
 163                 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
 164                 return ret;
 165         }
 166
 167         ret = devm_add_action_or_reset(&i2c->dev, rt5682_i2c_disable_regulators,
 168                                        rt5682);
 169         if (ret)
 170                 return ret;
 171
 172         ret = regulator_bulk_enable(ARRAY_SIZE(rt5682->supplies),
 173                                     rt5682->supplies);
 174         if (ret) {
 175                 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
 176                 return ret;
 177         }
 178
 179         if (gpio_is_valid(rt5682->pdata.ldo1_en)) {
 180                 if (devm_gpio_request_one(&i2c->dev, rt5682->pdata.ldo1_en,
 181                                           GPIOF_OUT_INIT_HIGH, "rt5682"))
 182                         dev_err(&i2c->dev, "Fail gpio_request gpio_ldo\n");
 183         }
 184
 185         /* Sleep for 300 ms miniumum */
 186         usleep_range(300000, 350000);
 187
 188         regmap_write(rt5682->regmap, RT5682_I2C_MODE, 0x1);
 189         usleep_range(10000, 15000);
 190
 191         regmap_read(rt5682->regmap, RT5682_DEVICE_ID, &val);
 192         if (val != DEVICE_ID) {
 193                 dev_err(&i2c->dev,
 194                         "Device with ID register %x is not rt5682\n", val);
 195                 return -ENODEV;
 196         }
 197
 198         mutex_init(&rt5682->calibrate_mutex);
 199         rt5682_calibrate(rt5682);
 200
 201         rt5682_apply_patch_list(rt5682, &i2c->dev);
 202
 203         regmap_write(rt5682->regmap, RT5682_DEPOP_1, 0x0000);
 204
 205         /* DMIC pin*/
 206         if (rt5682->pdata.dmic1_data_pin != RT5682_DMIC1_NULL) {
 207                 switch (rt5682->pdata.dmic1_data_pin) {
 208                 case RT5682_DMIC1_DATA_GPIO2: /* share with LRCK2 */
 209                         regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
 210                                 RT5682_DMIC_1_DP_MASK, RT5682_DMIC_1_DP_GPIO2);
 211                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 212                                 RT5682_GP2_PIN_MASK, RT5682_GP2_PIN_DMIC_SDA);
 213                         break;
 214
 215                 case RT5682_DMIC1_DATA_GPIO5: /* share with DACDAT1 */
 216                         regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
 217                                 RT5682_DMIC_1_DP_MASK, RT5682_DMIC_1_DP_GPIO5);
 218                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 219                                 RT5682_GP5_PIN_MASK, RT5682_GP5_PIN_DMIC_SDA);
 220                         break;
 221
 222                 default:
 223                         dev_warn(&i2c->dev, "invalid DMIC_DAT pin\n");
 224                         break;
 225                 }
 226
 227                 switch (rt5682->pdata.dmic1_clk_pin) {
 228                 case RT5682_DMIC1_CLK_GPIO1: /* share with IRQ */
 229                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 230                                 RT5682_GP1_PIN_MASK, RT5682_GP1_PIN_DMIC_CLK);
 231                         break;
 232
 233                 case RT5682_DMIC1_CLK_GPIO3: /* share with BCLK2 */
 234                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 235                                 RT5682_GP3_PIN_MASK, RT5682_GP3_PIN_DMIC_CLK);
 236                         break;
 237
 238                 default:
 239                         dev_warn(&i2c->dev, "invalid DMIC_CLK pin\n");
 240                         break;
 241                 }
 242         }
 243
 244         regmap_update_bits(rt5682->regmap, RT5682_PWR_ANLG_1,
 245                 RT5682_LDO1_DVO_MASK | RT5682_HP_DRIVER_MASK,
 246                 RT5682_LDO1_DVO_12 | RT5682_HP_DRIVER_5X);
 247         regmap_write(rt5682->regmap, RT5682_MICBIAS_2, 0x0080);
 248         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 249                 RT5682_GP4_PIN_MASK | RT5682_GP5_PIN_MASK,
 250                 RT5682_GP4_PIN_ADCDAT1 | RT5682_GP5_PIN_DACDAT1);
 251         regmap_write(rt5682->regmap, RT5682_TEST_MODE_CTRL_1, 0x0000);
 252         regmap_update_bits(rt5682->regmap, RT5682_BIAS_CUR_CTRL_8,
 253                 RT5682_HPA_CP_BIAS_CTRL_MASK, RT5682_HPA_CP_BIAS_3UA);
 254         regmap_update_bits(rt5682->regmap, RT5682_CHARGE_PUMP_1,
 255                 RT5682_CP_CLK_HP_MASK, RT5682_CP_CLK_HP_300KHZ);
 256         regmap_update_bits(rt5682->regmap, RT5682_HP_CHARGE_PUMP_1,
 257                 RT5682_PM_HP_MASK, RT5682_PM_HP_HV);
 258         regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
 259                 RT5682_FIFO_CLK_DIV_MASK, RT5682_FIFO_CLK_DIV_2);
 260
 261         INIT_DELAYED_WORK(&rt5682->jack_detect_work,
 262                 rt5682_jack_detect_handler);
 263         INIT_DELAYED_WORK(&rt5682->jd_check_work,
 264                 rt5682_jd_check_handler);
 265
 266         if (i2c->irq) {
 267                 ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
 268                         rt5682_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING
 269                         | IRQF_ONESHOT, "rt5682", rt5682);
 270                 if (ret)
 271                         dev_err(&i2c->dev, "Failed to reguest IRQ: %d\n", ret);
 272         }
 273
 274         return devm_snd_soc_register_component(&i2c->dev,
 275                                                &rt5682_soc_component_dev,
 276                                                rt5682_dai, ARRAY_SIZE(rt5682_dai));
 277 }
 278
 279 static void rt5682_i2c_shutdown(struct i2c_client *client)
 280 {
 281         struct rt5682_priv *rt5682 = i2c_get_clientdata(client);
 282
 283         disable_irq(client->irq);
 284         cancel_delayed_work_sync(&rt5682->jack_detect_work);
 285         cancel_delayed_work_sync(&rt5682->jd_check_work);
 286
 287         rt5682_reset(rt5682);
 288 }
 289
 290 static int rt5682_i2c_remove(struct i2c_client *client)
 291 {
 292         rt5682_i2c_shutdown(client);
 293
 294         return 0;
 295 }
 296
 297 static const struct of_device_id rt5682_of_match[] = {
 298         {.compatible = "realtek,rt5682i"},
 299         {},
 300 };
 301 MODULE_DEVICE_TABLE(of, rt5682_of_match);
 302
 303 static const struct acpi_device_id rt5682_acpi_match[] = {
 304         {"10EC5682", 0,},
 305         {},
 306 };
 307 MODULE_DEVICE_TABLE(acpi, rt5682_acpi_match);
 308
 309 static const struct i2c_device_id rt5682_i2c_id[] = {
 310         {"rt5682", 0},
 311         {}
 312 };
 313 MODULE_DEVICE_TABLE(i2c, rt5682_i2c_id);
 314
 315 static struct i2c_driver rt5682_i2c_driver = {
 316         .driver = {
 317                 .name = "rt5682",
 318                 .of_match_table = rt5682_of_match,
 319                 .acpi_match_table = rt5682_acpi_match,
 320                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 321         },
 322         .probe = rt5682_i2c_probe,
 323         .remove = rt5682_i2c_remove,
 324         .shutdown = rt5682_i2c_shutdown,
 325         .id_table = rt5682_i2c_id,
 326 };
 327 module_i2c_driver(rt5682_i2c_driver);
 328
 329 MODULE_DESCRIPTION("ASoC RT5682 driver");
 330 MODULE_AUTHOR("Bard Liao <bardliao@realtek.com>");
 331 MODULE_LICENSE("GPL v2");