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) & RT5682_JDH_RS_MASK)
  63                 /* jack out */
  64                 mod_delayed_work(system_power_efficient_wq,
  65                                  &rt5682->jack_detect_work, 0);
  66         else
  67                 schedule_delayed_work(&rt5682->jd_check_work, 500);
  68 }
  69
  70 static irqreturn_t rt5682_irq(int irq, void *data)
  71 {
  72         struct rt5682_priv *rt5682 = data;
  73
  74         mod_delayed_work(system_power_efficient_wq,
  75                 &rt5682->jack_detect_work, msecs_to_jiffies(rt5682->irq_work_delay_time));
  76
  77         return IRQ_HANDLED;
  78 }
  79
  80 static struct snd_soc_dai_driver rt5682_dai[] = {
  81         {
  82                 .name = "rt5682-aif1",
  83                 .id = RT5682_AIF1,
  84                 .playback = {
  85                         .stream_name = "AIF1 Playback",
  86                         .channels_min = 1,
  87                         .channels_max = 2,
  88                         .rates = RT5682_STEREO_RATES,
  89                         .formats = RT5682_FORMATS,
  90                 },
  91                 .capture = {
  92                         .stream_name = "AIF1 Capture",
  93                         .channels_min = 1,
  94                         .channels_max = 2,
  95                         .rates = RT5682_STEREO_RATES,
  96                         .formats = RT5682_FORMATS,
  97                 },
  98                 .ops = &rt5682_aif1_dai_ops,
  99         },
 100         {
 101                 .name = "rt5682-aif2",
 102                 .id = RT5682_AIF2,
 103                 .capture = {
 104                         .stream_name = "AIF2 Capture",
 105                         .channels_min = 1,
 106                         .channels_max = 2,
 107                         .rates = RT5682_STEREO_RATES,
 108                         .formats = RT5682_FORMATS,
 109                 },
 110                 .ops = &rt5682_aif2_dai_ops,
 111         },
 112 };
 113
 114 static void rt5682_i2c_disable_regulators(void *data)
 115 {
 116         struct rt5682_priv *rt5682 = data;
 117
 118         regulator_bulk_disable(ARRAY_SIZE(rt5682->supplies), rt5682->supplies);
 119 }
 120
 121 static int rt5682_i2c_probe(struct i2c_client *i2c)
 122 {
 123         struct rt5682_platform_data *pdata = dev_get_platdata(&i2c->dev);
 124         struct rt5682_priv *rt5682;
 125         int i, ret;
 126         unsigned int val;
 127
 128         rt5682 = devm_kzalloc(&i2c->dev, sizeof(struct rt5682_priv),
 129                 GFP_KERNEL);
 130         if (!rt5682)
 131                 return -ENOMEM;
 132
 133         i2c_set_clientdata(i2c, rt5682);
 134
 135         rt5682->i2c_dev = &i2c->dev;
 136
 137         rt5682->pdata = i2s_default_platform_data;
 138
 139         if (pdata)
 140                 rt5682->pdata = *pdata;
 141         else
 142                 rt5682_parse_dt(rt5682, &i2c->dev);
 143
 144         rt5682->regmap = devm_regmap_init_i2c(i2c, &rt5682_regmap);
 145         if (IS_ERR(rt5682->regmap)) {
 146                 ret = PTR_ERR(rt5682->regmap);
 147                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
 148                         ret);
 149                 return ret;
 150         }
 151
 152         for (i = 0; i < ARRAY_SIZE(rt5682->supplies); i++)
 153                 rt5682->supplies[i].supply = rt5682_supply_names[i];
 154
 155         ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(rt5682->supplies),
 156                                       rt5682->supplies);
 157         if (ret) {
 158                 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
 159                 return ret;
 160         }
 161
 162         ret = devm_add_action_or_reset(&i2c->dev, rt5682_i2c_disable_regulators,
 163                                        rt5682);
 164         if (ret)
 165                 return ret;
 166
 167         ret = regulator_bulk_enable(ARRAY_SIZE(rt5682->supplies),
 168                                     rt5682->supplies);
 169         if (ret) {
 170                 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
 171                 return ret;
 172         }
 173
 174         if (gpio_is_valid(rt5682->pdata.ldo1_en)) {
 175                 if (devm_gpio_request_one(&i2c->dev, rt5682->pdata.ldo1_en,
 176                                           GPIOF_OUT_INIT_HIGH, "rt5682"))
 177                         dev_err(&i2c->dev, "Fail gpio_request gpio_ldo\n");
 178         }
 179
 180         /* Sleep for 300 ms miniumum */
 181         usleep_range(300000, 350000);
 182
 183         regmap_write(rt5682->regmap, RT5682_I2C_MODE, 0x1);
 184         usleep_range(10000, 15000);
 185
 186         regmap_read(rt5682->regmap, RT5682_DEVICE_ID, &val);
 187         if (val != DEVICE_ID) {
 188                 dev_err(&i2c->dev,
 189                         "Device with ID register %x is not rt5682\n", val);
 190                 return -ENODEV;
 191         }
 192
 193         mutex_init(&rt5682->calibrate_mutex);
 194         rt5682_calibrate(rt5682);
 195
 196         rt5682_apply_patch_list(rt5682, &i2c->dev);
 197
 198         regmap_write(rt5682->regmap, RT5682_DEPOP_1, 0x0000);
 199
 200         /* DMIC pin*/
 201         if (rt5682->pdata.dmic1_data_pin != RT5682_DMIC1_NULL) {
 202                 switch (rt5682->pdata.dmic1_data_pin) {
 203                 case RT5682_DMIC1_DATA_GPIO2: /* share with LRCK2 */
 204                         regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
 205                                 RT5682_DMIC_1_DP_MASK, RT5682_DMIC_1_DP_GPIO2);
 206                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 207                                 RT5682_GP2_PIN_MASK, RT5682_GP2_PIN_DMIC_SDA);
 208                         break;
 209
 210                 case RT5682_DMIC1_DATA_GPIO5: /* share with DACDAT1 */
 211                         regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
 212                                 RT5682_DMIC_1_DP_MASK, RT5682_DMIC_1_DP_GPIO5);
 213                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 214                                 RT5682_GP5_PIN_MASK, RT5682_GP5_PIN_DMIC_SDA);
 215                         break;
 216
 217                 default:
 218                         dev_warn(&i2c->dev, "invalid DMIC_DAT pin\n");
 219                         break;
 220                 }
 221
 222                 switch (rt5682->pdata.dmic1_clk_pin) {
 223                 case RT5682_DMIC1_CLK_GPIO1: /* share with IRQ */
 224                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 225                                 RT5682_GP1_PIN_MASK, RT5682_GP1_PIN_DMIC_CLK);
 226                         break;
 227
 228                 case RT5682_DMIC1_CLK_GPIO3: /* share with BCLK2 */
 229                         regmap_update_bits(rt5682->regmap, RT5682_GPIO_CTRL_1,
 230                                 RT5682_GP3_PIN_MASK, RT5682_GP3_PIN_DMIC_CLK);
 231                         if (rt5682->pdata.dmic_clk_driving_high)
 232                                 regmap_update_bits(rt5682->regmap,
 233                                         RT5682_PAD_DRIVING_CTRL,
 234                                         RT5682_PAD_DRV_GP3_MASK,
 235                                         2 << RT5682_PAD_DRV_GP3_SFT);
 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 #ifdef CONFIG_COMMON_CLK
 275         /* Check if MCLK provided */
 276         rt5682->mclk = devm_clk_get_optional(&i2c->dev, "mclk");
 277         if (IS_ERR(rt5682->mclk))
 278                 return PTR_ERR(rt5682->mclk);
 279
 280         /* Register CCF DAI clock control */
 281         ret = rt5682_register_dai_clks(rt5682);
 282         if (ret)
 283                 return ret;
 284
 285         /* Initial setup for CCF */
 286         rt5682->lrck[RT5682_AIF1] = 48000;
 287 #endif
 288
 289         return devm_snd_soc_register_component(&i2c->dev,
 290                                                &rt5682_soc_component_dev,
 291                                                rt5682_dai, ARRAY_SIZE(rt5682_dai));
 292 }
 293
 294 static void rt5682_i2c_shutdown(struct i2c_client *client)
 295 {
 296         struct rt5682_priv *rt5682 = i2c_get_clientdata(client);
 297
 298         disable_irq(client->irq);
 299         cancel_delayed_work_sync(&rt5682->jack_detect_work);
 300         cancel_delayed_work_sync(&rt5682->jd_check_work);
 301
 302         rt5682_reset(rt5682);
 303 }
 304
 305 static int rt5682_i2c_remove(struct i2c_client *client)
 306 {
 307         rt5682_i2c_shutdown(client);
 308
 309         return 0;
 310 }
 311
 312 static const struct of_device_id rt5682_of_match[] = {
 313         {.compatible = "realtek,rt5682i"},
 314         {},
 315 };
 316 MODULE_DEVICE_TABLE(of, rt5682_of_match);
 317
 318 static const struct acpi_device_id rt5682_acpi_match[] = {
 319         {"10EC5682", 0,},
 320         {},
 321 };
 322 MODULE_DEVICE_TABLE(acpi, rt5682_acpi_match);
 323
 324 static const struct i2c_device_id rt5682_i2c_id[] = {
 325         {"rt5682", 0},
 326         {}
 327 };
 328 MODULE_DEVICE_TABLE(i2c, rt5682_i2c_id);
 329
 330 static struct i2c_driver rt5682_i2c_driver = {
 331         .driver = {
 332                 .name = "rt5682",
 333                 .of_match_table = rt5682_of_match,
 334                 .acpi_match_table = rt5682_acpi_match,
 335                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 336         },
 337         .probe_new = rt5682_i2c_probe,
 338         .remove = rt5682_i2c_remove,
 339         .shutdown = rt5682_i2c_shutdown,
 340         .id_table = rt5682_i2c_id,
 341 };
 342 module_i2c_driver(rt5682_i2c_driver);
 343
 344 MODULE_DESCRIPTION("ASoC RT5682 driver");
 345 MODULE_AUTHOR("Bard Liao <bardliao@realtek.com>");
 346 MODULE_LICENSE("GPL v2");