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/i2c.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/spi/spi.h>
  17 #include <linux/acpi.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <linux/mutex.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/jack.h>
  24 #include <sound/soc.h>
  25 #include <sound/soc-dapm.h>
  26 #include <sound/initval.h>
  27 #include <sound/tlv.h>
  28 #include <sound/rt5682.h>
  29
  30 #include "rl6231.h"
  31 #include "rt5682.h"
  32
  33 static const struct rt5682_platform_data i2s_default_platform_data = {
  34         .dmic1_data_pin = RT5682_DMIC1_DATA_GPIO2,
  35         .dmic1_clk_pin = RT5682_DMIC1_CLK_GPIO3,
  36         .jd_src = RT5682_JD1,
  37         .btndet_delay = 16,
  38         .dai_clk_names[RT5682_DAI_WCLK_IDX] = "rt5682-dai-wclk",
  39         .dai_clk_names[RT5682_DAI_BCLK_IDX] = "rt5682-dai-bclk",
  40 };
  41
  42 static const struct regmap_config rt5682_regmap = {
  43         .reg_bits = 16,
  44         .val_bits = 16,
  45         .max_register = RT5682_I2C_MODE,
  46         .volatile_reg = rt5682_volatile_register,
  47         .readable_reg = rt5682_readable_register,
  48         .cache_type = REGCACHE_MAPLE,
  49         .reg_defaults = rt5682_reg,
  50         .num_reg_defaults = RT5682_REG_NUM,
  51         .use_single_read = true,
  52         .use_single_write = true,
  53 };
  54
  55 static void rt5682_jd_check_handler(struct work_struct *work)
  56 {
  57         struct rt5682_priv *rt5682 = container_of(work, struct rt5682_priv,
  58                 jd_check_work.work);
  59
  60         if (snd_soc_component_read(rt5682->component, RT5682_AJD1_CTRL) & RT5682_JDH_RS_MASK)
  61                 /* jack out */
  62                 mod_delayed_work(system_power_efficient_wq,
  63                                  &rt5682->jack_detect_work, 0);
  64         else
  65                 schedule_delayed_work(&rt5682->jd_check_work, 500);
  66 }
  67
  68 static irqreturn_t rt5682_irq(int irq, void *data)
  69 {
  70         struct rt5682_priv *rt5682 = data;
  71
  72         mod_delayed_work(system_power_efficient_wq,
  73                 &rt5682->jack_detect_work, msecs_to_jiffies(rt5682->irq_work_delay_time));
  74
  75         return IRQ_HANDLED;
  76 }
  77
  78 static struct snd_soc_dai_driver rt5682_dai[] = {
  79         {
  80                 .name = "rt5682-aif1",
  81                 .id = RT5682_AIF1,
  82                 .playback = {
  83                         .stream_name = "AIF1 Playback",
  84                         .channels_min = 1,
  85                         .channels_max = 2,
  86                         .rates = RT5682_STEREO_RATES,
  87                         .formats = RT5682_FORMATS,
  88                 },
  89                 .capture = {
  90                         .stream_name = "AIF1 Capture",
  91                         .channels_min = 1,
  92                         .channels_max = 2,
  93                         .rates = RT5682_STEREO_RATES,
  94                         .formats = RT5682_FORMATS,
  95                 },
  96                 .ops = &rt5682_aif1_dai_ops,
  97         },
  98         {
  99                 .name = "rt5682-aif2",
 100                 .id = RT5682_AIF2,
 101                 .capture = {
 102                         .stream_name = "AIF2 Capture",
 103                         .channels_min = 1,
 104                         .channels_max = 2,
 105                         .rates = RT5682_STEREO_RATES,
 106                         .formats = RT5682_FORMATS,
 107                 },
 108                 .ops = &rt5682_aif2_dai_ops,
 109         },
 110 };
 111
 112 static void rt5682_i2c_disable_regulators(void *data)
 113 {
 114         struct rt5682_priv *rt5682 = data;
 115
 116         regulator_bulk_disable(ARRAY_SIZE(rt5682->supplies), rt5682->supplies);
 117 }
 118
 119 static int rt5682_i2c_probe(struct i2c_client *i2c)
 120 {
 121         struct rt5682_platform_data *pdata = dev_get_platdata(&i2c->dev);
 122         struct rt5682_priv *rt5682;
 123         int i, ret;
 124         unsigned int val;
 125
 126         rt5682 = devm_kzalloc(&i2c->dev, sizeof(struct rt5682_priv),
 127                 GFP_KERNEL);
 128         if (!rt5682)
 129                 return -ENOMEM;
 130
 131         i2c_set_clientdata(i2c, rt5682);
 132
 133         rt5682->i2c_dev = &i2c->dev;
 134
 135         rt5682->pdata = i2s_default_platform_data;
 136
 137         if (pdata)
 138                 rt5682->pdata = *pdata;
 139         else
 140                 rt5682_parse_dt(rt5682, &i2c->dev);
 141
 142         rt5682->regmap = devm_regmap_init_i2c(i2c, &rt5682_regmap);
 143         if (IS_ERR(rt5682->regmap)) {
 144                 ret = PTR_ERR(rt5682->regmap);
 145                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
 146                         ret);
 147                 return ret;
 148         }
 149
 150         for (i = 0; i < ARRAY_SIZE(rt5682->supplies); i++)
 151                 rt5682->supplies[i].supply = rt5682_supply_names[i];
 152
 153         ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(rt5682->supplies),
 154                                       rt5682->supplies);
 155         if (ret) {
 156                 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
 157                 return ret;
 158         }
 159
 160         ret = regulator_bulk_enable(ARRAY_SIZE(rt5682->supplies),
 161                                     rt5682->supplies);
 162         if (ret) {
 163                 dev_err(&i2c->dev, "Failed to enable 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 = rt5682_get_ldo1(rt5682, &i2c->dev);
 173         if (ret)
 174                 return ret;
 175
 176         /* Sleep for 300 ms miniumum */
 177         usleep_range(300000, 350000);
 178
 179         regmap_write(rt5682->regmap, RT5682_I2C_MODE, 0x1);
 180         usleep_range(10000, 15000);
 181
 182         regmap_read(rt5682->regmap, RT5682_DEVICE_ID, &val);
 183         if (val != DEVICE_ID) {
 184                 dev_err(&i2c->dev,
 185                         "Device with ID register %x is not rt5682\n", val);
 186                 return -ENODEV;
 187         }
 188
 189         mutex_init(&rt5682->calibrate_mutex);
 190         rt5682_calibrate(rt5682);
 191
 192         rt5682_apply_patch_list(rt5682, &i2c->dev);
 193
 194         regmap_write(rt5682->regmap, RT5682_DEPOP_1, 0x0000);
 195
 196         /* DMIC pin*/
 197         if (rt5682->pdata.dmic1_data_pin != RT5682_DMIC1_NULL) {
 198                 switch (rt5682->pdata.dmic1_data_pin) {
 199                 case RT5682_DMIC1_DATA_GPIO2: /* share with LRCK2 */
 200                         regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
 201                                 RT5682_DMIC_1_DP_MASK, RT5682_DMIC_1_DP_GPIO2);
 202                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 203                                 RT5682_GP2_PIN_MASK, RT5682_GP2_PIN_DMIC_SDA);
 204                         break;
 205
 206                 case RT5682_DMIC1_DATA_GPIO5: /* share with DACDAT1 */
 207                         regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
 208                                 RT5682_DMIC_1_DP_MASK, RT5682_DMIC_1_DP_GPIO5);
 209                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 210                                 RT5682_GP5_PIN_MASK, RT5682_GP5_PIN_DMIC_SDA);
 211                         break;
 212
 213                 default:
 214                         dev_warn(&i2c->dev, "invalid DMIC_DAT pin\n");
 215                         break;
 216                 }
 217
 218                 switch (rt5682->pdata.dmic1_clk_pin) {
 219                 case RT5682_DMIC1_CLK_GPIO1: /* share with IRQ */
 220                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 221                                 RT5682_GP1_PIN_MASK, RT5682_GP1_PIN_DMIC_CLK);
 222                         break;
 223
 224                 case RT5682_DMIC1_CLK_GPIO3: /* share with BCLK2 */
 225                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 226                                 RT5682_GP3_PIN_MASK, RT5682_GP3_PIN_DMIC_CLK);
 227                         if (rt5682->pdata.dmic_clk_driving_high)
 228                                 regmap_update_bits(rt5682->regmap,
 229                                         RT5682_PAD_DRIVING_CTRL,
 230                                         RT5682_PAD_DRV_GP3_MASK,
 231                                         2 << RT5682_PAD_DRV_GP3_SFT);
 232                         break;
 233
 234                 default:
 235                         dev_warn(&i2c->dev, "invalid DMIC_CLK pin\n");
 236                         break;
 237                 }
 238         }
 239
 240         regmap_update_bits(rt5682->regmap, RT5682_PWR_ANLG_1,
 241                 RT5682_LDO1_DVO_MASK | RT5682_HP_DRIVER_MASK,
 242                 RT5682_LDO1_DVO_12 | RT5682_HP_DRIVER_5X);
 243         regmap_write(rt5682->regmap, RT5682_MICBIAS_2, 0x0080);
 244         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 245                 RT5682_GP4_PIN_MASK | RT5682_GP5_PIN_MASK,
 246                 RT5682_GP4_PIN_ADCDAT1 | RT5682_GP5_PIN_DACDAT1);
 247         regmap_write(rt5682->regmap, RT5682_TEST_MODE_CTRL_1, 0x0000);
 248         regmap_update_bits(rt5682->regmap, RT5682_BIAS_CUR_CTRL_8,
 249                 RT5682_HPA_CP_BIAS_CTRL_MASK, RT5682_HPA_CP_BIAS_3UA);
 250         regmap_update_bits(rt5682->regmap, RT5682_CHARGE_PUMP_1,
 251                 RT5682_CP_CLK_HP_MASK, RT5682_CP_CLK_HP_300KHZ);
 252         regmap_update_bits(rt5682->regmap, RT5682_HP_CHARGE_PUMP_1,
 253                 RT5682_PM_HP_MASK, RT5682_PM_HP_HV);
 254         regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
 255                 RT5682_FIFO_CLK_DIV_MASK, RT5682_FIFO_CLK_DIV_2);
 256
 257         INIT_DELAYED_WORK(&rt5682->jack_detect_work,
 258                 rt5682_jack_detect_handler);
 259         INIT_DELAYED_WORK(&rt5682->jd_check_work,
 260                 rt5682_jd_check_handler);
 261
 262         if (i2c->irq) {
 263                 ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
 264                         rt5682_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING
 265                         | IRQF_ONESHOT, "rt5682", rt5682);
 266                 if (!ret)
 267                         rt5682->irq = i2c->irq;
 268                 else
 269                         dev_err(&i2c->dev, "Failed to reguest IRQ: %d\n", ret);
 270         }
 271
 272 #ifdef CONFIG_COMMON_CLK
 273         /* Check if MCLK provided */
 274         rt5682->mclk = devm_clk_get_optional(&i2c->dev, "mclk");
 275         if (IS_ERR(rt5682->mclk))
 276                 return PTR_ERR(rt5682->mclk);
 277
 278         /* Register CCF DAI clock control */
 279         ret = rt5682_register_dai_clks(rt5682);
 280         if (ret)
 281                 return ret;
 282
 283         /* Initial setup for CCF */
 284         rt5682->lrck[RT5682_AIF1] = 48000;
 285 #endif
 286
 287         return devm_snd_soc_register_component(&i2c->dev,
 288                                                &rt5682_soc_component_dev,
 289                                                rt5682_dai, ARRAY_SIZE(rt5682_dai));
 290 }
 291
 292 static void rt5682_i2c_shutdown(struct i2c_client *client)
 293 {
 294         struct rt5682_priv *rt5682 = i2c_get_clientdata(client);
 295
 296         disable_irq(client->irq);
 297         cancel_delayed_work_sync(&rt5682->jack_detect_work);
 298         cancel_delayed_work_sync(&rt5682->jd_check_work);
 299
 300         rt5682_reset(rt5682);
 301 }
 302
 303 static void rt5682_i2c_remove(struct i2c_client *client)
 304 {
 305         rt5682_i2c_shutdown(client);
 306 }
 307
 308 static const struct of_device_id rt5682_of_match[] = {
 309         {.compatible = "realtek,rt5682i"},
 310         {},
 311 };
 312 MODULE_DEVICE_TABLE(of, rt5682_of_match);
 313
 314 static const struct acpi_device_id rt5682_acpi_match[] = {
 315         {"10EC5682", 0,},
 316         {},
 317 };
 318 MODULE_DEVICE_TABLE(acpi, rt5682_acpi_match);
 319
 320 static const struct i2c_device_id rt5682_i2c_id[] = {
 321         {"rt5682", 0},
 322         {}
 323 };
 324 MODULE_DEVICE_TABLE(i2c, rt5682_i2c_id);
 325
 326 static struct i2c_driver rt5682_i2c_driver = {
 327         .driver = {
 328                 .name = "rt5682",
 329                 .of_match_table = rt5682_of_match,
 330                 .acpi_match_table = rt5682_acpi_match,
 331                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 332         },
 333         .probe = rt5682_i2c_probe,
 334         .remove = rt5682_i2c_remove,
 335         .shutdown = rt5682_i2c_shutdown,
 336         .id_table = rt5682_i2c_id,
 337 };
 338 module_i2c_driver(rt5682_i2c_driver);
 339
 340 MODULE_DESCRIPTION("ASoC RT5682 driver");
 341 MODULE_AUTHOR("Bard Liao <bardliao@realtek.com>");
 342 MODULE_LICENSE("GPL v2");