Dan Murphy | 5df7f71 | 2014-07-14 15:10:45 -0500 | [diff] [blame^] | 1 | /* |
| 2 | * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier |
| 3 | * |
| 4 | * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com |
| 5 | * |
| 6 | * Author: Dan Murphy <dmurphy@ti.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * version 2 as published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/errno.h> |
| 20 | #include <linux/device.h> |
| 21 | #include <linux/i2c.h> |
| 22 | #include <linux/gpio.h> |
| 23 | #include <linux/of_gpio.h> |
| 24 | #include <linux/pm_runtime.h> |
| 25 | #include <linux/regmap.h> |
| 26 | #include <linux/slab.h> |
| 27 | |
| 28 | #include <linux/gpio/consumer.h> |
| 29 | #include <linux/regulator/consumer.h> |
| 30 | |
| 31 | #include <sound/pcm.h> |
| 32 | #include <sound/pcm_params.h> |
| 33 | #include <sound/soc.h> |
| 34 | #include <sound/soc-dapm.h> |
| 35 | #include <sound/tlv.h> |
| 36 | #include <sound/tas2552-plat.h> |
| 37 | |
| 38 | #include "tas2552.h" |
| 39 | |
| 40 | static struct reg_default tas2552_reg_defs[] = { |
| 41 | {TAS2552_CFG_1, 0x22}, |
| 42 | {TAS2552_CFG_3, 0x80}, |
| 43 | {TAS2552_DOUT, 0x00}, |
| 44 | {TAS2552_OUTPUT_DATA, 0xc0}, |
| 45 | {TAS2552_PDM_CFG, 0x01}, |
| 46 | {TAS2552_PGA_GAIN, 0x00}, |
| 47 | {TAS2552_BOOST_PT_CTRL, 0x0f}, |
| 48 | {TAS2552_RESERVED_0D, 0x00}, |
| 49 | {TAS2552_LIMIT_RATE_HYS, 0x08}, |
| 50 | {TAS2552_CFG_2, 0xef}, |
| 51 | {TAS2552_SER_CTRL_1, 0x00}, |
| 52 | {TAS2552_SER_CTRL_2, 0x00}, |
| 53 | {TAS2552_PLL_CTRL_1, 0x10}, |
| 54 | {TAS2552_PLL_CTRL_2, 0x00}, |
| 55 | {TAS2552_PLL_CTRL_3, 0x00}, |
| 56 | {TAS2552_BTIP, 0x8f}, |
| 57 | {TAS2552_BTS_CTRL, 0x80}, |
| 58 | {TAS2552_LIMIT_RELEASE, 0x04}, |
| 59 | {TAS2552_LIMIT_INT_COUNT, 0x00}, |
| 60 | {TAS2552_EDGE_RATE_CTRL, 0x40}, |
| 61 | {TAS2552_VBAT_DATA, 0x00}, |
| 62 | }; |
| 63 | |
| 64 | #define TAS2552_NUM_SUPPLIES 3 |
| 65 | static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = { |
| 66 | "vbat", /* vbat voltage */ |
| 67 | "iovdd", /* I/O Voltage */ |
| 68 | "avdd", /* Analog DAC Voltage */ |
| 69 | }; |
| 70 | |
| 71 | struct tas2552_data { |
| 72 | struct snd_soc_codec *codec; |
| 73 | struct regmap *regmap; |
| 74 | struct i2c_client *tas2552_client; |
| 75 | struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES]; |
| 76 | struct gpio_desc *enable_gpio; |
| 77 | unsigned char regs[TAS2552_VBAT_DATA]; |
| 78 | unsigned int mclk; |
| 79 | }; |
| 80 | |
| 81 | static void tas2552_sw_shutdown(struct tas2552_data *tas_data, int sw_shutdown) |
| 82 | { |
| 83 | u8 cfg1_reg; |
| 84 | |
| 85 | if (sw_shutdown) |
| 86 | cfg1_reg = 0; |
| 87 | else |
| 88 | cfg1_reg = TAS2552_SWS_MASK; |
| 89 | |
| 90 | snd_soc_update_bits(tas_data->codec, TAS2552_CFG_1, |
| 91 | TAS2552_SWS_MASK, cfg1_reg); |
| 92 | } |
| 93 | |
| 94 | static int tas2552_hw_params(struct snd_pcm_substream *substream, |
| 95 | struct snd_pcm_hw_params *params, |
| 96 | struct snd_soc_dai *dai) |
| 97 | { |
| 98 | struct snd_soc_codec *codec = dai->codec; |
| 99 | struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev); |
| 100 | int sample_rate, pll_clk; |
| 101 | int d; |
| 102 | u8 p, j; |
| 103 | |
| 104 | /* Turn on Class D amplifier */ |
| 105 | snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_CLASSD_EN_MASK, |
| 106 | TAS2552_CLASSD_EN); |
| 107 | |
| 108 | if (!tas2552->mclk) |
| 109 | return -EINVAL; |
| 110 | |
| 111 | snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0); |
| 112 | |
| 113 | if (tas2552->mclk == TAS2552_245MHZ_CLK || |
| 114 | tas2552->mclk == TAS2552_225MHZ_CLK) { |
| 115 | /* By pass the PLL configuration */ |
| 116 | snd_soc_update_bits(codec, TAS2552_PLL_CTRL_2, |
| 117 | TAS2552_PLL_BYPASS_MASK, |
| 118 | TAS2552_PLL_BYPASS); |
| 119 | } else { |
| 120 | /* Fill in the PLL control registers for J & D |
| 121 | * PLL_CLK = (.5 * freq * J.D) / 2^p |
| 122 | * Need to fill in J and D here based on incoming freq |
| 123 | */ |
| 124 | p = snd_soc_read(codec, TAS2552_PLL_CTRL_1); |
| 125 | p = (p >> 7); |
| 126 | sample_rate = params_rate(params); |
| 127 | |
| 128 | if (sample_rate == 48000) |
| 129 | pll_clk = TAS2552_245MHZ_CLK; |
| 130 | else if (sample_rate == 44100) |
| 131 | pll_clk = TAS2552_225MHZ_CLK; |
| 132 | else { |
| 133 | dev_vdbg(codec->dev, "Substream sample rate is not found %i\n", |
| 134 | params_rate(params)); |
| 135 | return -EINVAL; |
| 136 | } |
| 137 | |
| 138 | j = (pll_clk * 2 * (1 << p)) / tas2552->mclk; |
| 139 | d = (pll_clk * 2 * (1 << p)) % tas2552->mclk; |
| 140 | |
| 141 | snd_soc_update_bits(codec, TAS2552_PLL_CTRL_1, |
| 142 | TAS2552_PLL_J_MASK, j); |
| 143 | snd_soc_write(codec, TAS2552_PLL_CTRL_2, |
| 144 | (d >> 7) & TAS2552_PLL_D_UPPER_MASK); |
| 145 | snd_soc_write(codec, TAS2552_PLL_CTRL_3, |
| 146 | d & TAS2552_PLL_D_LOWER_MASK); |
| 147 | |
| 148 | } |
| 149 | |
| 150 | snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, |
| 151 | TAS2552_PLL_ENABLE); |
| 152 | |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| 157 | { |
| 158 | struct snd_soc_codec *codec = dai->codec; |
| 159 | u8 serial_format; |
| 160 | u8 serial_control_mask; |
| 161 | |
| 162 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 163 | case SND_SOC_DAIFMT_CBS_CFS: |
| 164 | serial_format = 0x00; |
| 165 | break; |
| 166 | case SND_SOC_DAIFMT_CBS_CFM: |
| 167 | serial_format = TAS2552_WORD_CLK_MASK; |
| 168 | break; |
| 169 | case SND_SOC_DAIFMT_CBM_CFS: |
| 170 | serial_format = TAS2552_BIT_CLK_MASK; |
| 171 | break; |
| 172 | case SND_SOC_DAIFMT_CBM_CFM: |
| 173 | serial_format = (TAS2552_BIT_CLK_MASK | TAS2552_WORD_CLK_MASK); |
| 174 | break; |
| 175 | default: |
| 176 | dev_vdbg(codec->dev, "DAI Format master is not found\n"); |
| 177 | return -EINVAL; |
| 178 | } |
| 179 | |
| 180 | serial_control_mask = TAS2552_BIT_CLK_MASK | TAS2552_WORD_CLK_MASK; |
| 181 | |
| 182 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 183 | case SND_SOC_DAIFMT_I2S: |
| 184 | serial_format &= TAS2552_DAIFMT_I2S_MASK; |
| 185 | break; |
| 186 | case SND_SOC_DAIFMT_DSP_A: |
| 187 | serial_format |= TAS2552_DAIFMT_DSP; |
| 188 | break; |
| 189 | case SND_SOC_DAIFMT_RIGHT_J: |
| 190 | serial_format |= TAS2552_DAIFMT_RIGHT_J; |
| 191 | break; |
| 192 | case SND_SOC_DAIFMT_LEFT_J: |
| 193 | serial_format |= TAS2552_DAIFMT_LEFT_J; |
| 194 | break; |
| 195 | default: |
| 196 | dev_vdbg(codec->dev, "DAI Format is not found\n"); |
| 197 | return -EINVAL; |
| 198 | } |
| 199 | |
| 200 | if (fmt & SND_SOC_DAIFMT_FORMAT_MASK) |
| 201 | serial_control_mask |= TAS2552_DATA_FORMAT_MASK; |
| 202 | |
| 203 | snd_soc_update_bits(codec, TAS2552_SER_CTRL_1, serial_control_mask, |
| 204 | serial_format); |
| 205 | |
| 206 | return 0; |
| 207 | } |
| 208 | |
| 209 | static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, |
| 210 | unsigned int freq, int dir) |
| 211 | { |
| 212 | struct snd_soc_codec *codec = dai->codec; |
| 213 | struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev); |
| 214 | |
| 215 | tas2552->mclk = freq; |
| 216 | |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | static int tas2552_mute(struct snd_soc_dai *dai, int mute) |
| 221 | { |
| 222 | u8 cfg1_reg; |
| 223 | struct snd_soc_codec *codec = dai->codec; |
| 224 | |
| 225 | if (mute) |
| 226 | cfg1_reg = TAS2552_MUTE_MASK; |
| 227 | else |
| 228 | cfg1_reg = ~TAS2552_MUTE_MASK; |
| 229 | |
| 230 | snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_MUTE_MASK, cfg1_reg); |
| 231 | |
| 232 | return 0; |
| 233 | } |
| 234 | |
| 235 | #ifdef CONFIG_PM_RUNTIME |
| 236 | static int tas2552_runtime_suspend(struct device *dev) |
| 237 | { |
| 238 | struct tas2552_data *tas2552 = dev_get_drvdata(dev); |
| 239 | |
| 240 | tas2552_sw_shutdown(tas2552, 0); |
| 241 | |
| 242 | if (tas2552->enable_gpio) |
| 243 | gpiod_set_value(tas2552->enable_gpio, 0); |
| 244 | |
| 245 | regcache_cache_only(tas2552->regmap, true); |
| 246 | regcache_mark_dirty(tas2552->regmap); |
| 247 | |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | static int tas2552_runtime_resume(struct device *dev) |
| 252 | { |
| 253 | struct tas2552_data *tas2552 = dev_get_drvdata(dev); |
| 254 | |
| 255 | if (tas2552->enable_gpio) |
| 256 | gpiod_set_value(tas2552->enable_gpio, 1); |
| 257 | |
| 258 | tas2552_sw_shutdown(tas2552, 1); |
| 259 | |
| 260 | regcache_cache_only(tas2552->regmap, false); |
| 261 | regcache_sync(tas2552->regmap); |
| 262 | |
| 263 | return 0; |
| 264 | } |
| 265 | #endif |
| 266 | |
| 267 | static const struct dev_pm_ops tas2552_pm = { |
| 268 | SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume, |
| 269 | NULL) |
| 270 | }; |
| 271 | |
| 272 | static void tas2552_shutdown(struct snd_pcm_substream *substream, |
| 273 | struct snd_soc_dai *dai) |
| 274 | { |
| 275 | struct snd_soc_codec *codec = dai->codec; |
| 276 | |
| 277 | snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0); |
| 278 | } |
| 279 | |
| 280 | static struct snd_soc_dai_ops tas2552_speaker_dai_ops = { |
| 281 | .hw_params = tas2552_hw_params, |
| 282 | .set_sysclk = tas2552_set_dai_sysclk, |
| 283 | .set_fmt = tas2552_set_dai_fmt, |
| 284 | .shutdown = tas2552_shutdown, |
| 285 | .digital_mute = tas2552_mute, |
| 286 | }; |
| 287 | |
| 288 | /* Formats supported by TAS2552 driver. */ |
| 289 | #define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
| 290 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
| 291 | |
| 292 | /* TAS2552 dai structure. */ |
| 293 | static struct snd_soc_dai_driver tas2552_dai[] = { |
| 294 | { |
| 295 | .name = "tas2552-amplifier", |
| 296 | .playback = { |
| 297 | .stream_name = "Speaker", |
| 298 | .channels_min = 2, |
| 299 | .channels_max = 2, |
| 300 | .rates = SNDRV_PCM_RATE_8000_192000, |
| 301 | .formats = TAS2552_FORMATS, |
| 302 | }, |
| 303 | .ops = &tas2552_speaker_dai_ops, |
| 304 | }, |
| 305 | }; |
| 306 | |
| 307 | /* |
| 308 | * DAC digital volumes. From -7 to 24 dB in 1 dB steps |
| 309 | */ |
| 310 | static DECLARE_TLV_DB_SCALE(dac_tlv, -7, 100, 24); |
| 311 | |
| 312 | static const struct snd_kcontrol_new tas2552_snd_controls[] = { |
| 313 | SOC_SINGLE_TLV("Speaker Driver Playback Volume", |
| 314 | TAS2552_PGA_GAIN, 0, 0x1f, 1, dac_tlv), |
| 315 | }; |
| 316 | |
| 317 | static const struct reg_default tas2552_init_regs[] = { |
| 318 | { TAS2552_RESERVED_0D, 0xc0 }, |
| 319 | }; |
| 320 | |
| 321 | static int tas2552_codec_probe(struct snd_soc_codec *codec) |
| 322 | { |
| 323 | struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec); |
| 324 | int ret; |
| 325 | |
| 326 | tas2552->codec = codec; |
| 327 | |
| 328 | ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), |
| 329 | tas2552->supplies); |
| 330 | |
| 331 | if (ret != 0) { |
| 332 | dev_err(codec->dev, "Failed to enable supplies: %d\n", |
| 333 | ret); |
| 334 | return ret; |
| 335 | } |
| 336 | |
| 337 | if (tas2552->enable_gpio) |
| 338 | gpiod_set_value(tas2552->enable_gpio, 1); |
| 339 | |
| 340 | ret = pm_runtime_get_sync(codec->dev); |
| 341 | if (ret < 0) { |
| 342 | dev_err(codec->dev, "Enabling device failed: %d\n", |
| 343 | ret); |
| 344 | goto probe_fail; |
| 345 | } |
| 346 | |
| 347 | snd_soc_write(codec, TAS2552_CFG_1, TAS2552_MUTE_MASK | |
| 348 | TAS2552_PLL_SRC_BCLK); |
| 349 | snd_soc_write(codec, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL | |
| 350 | TAS2552_DIN_SRC_SEL_AVG_L_R | TAS2552_88_96KHZ); |
| 351 | snd_soc_write(codec, TAS2552_DOUT, TAS2552_PDM_DATA_I); |
| 352 | snd_soc_write(codec, TAS2552_OUTPUT_DATA, TAS2552_PDM_DATA_V_I | 0x8); |
| 353 | snd_soc_write(codec, TAS2552_PDM_CFG, TAS2552_PDM_BCLK_SEL); |
| 354 | snd_soc_write(codec, TAS2552_BOOST_PT_CTRL, TAS2552_APT_DELAY_200 | |
| 355 | TAS2552_APT_THRESH_2_1_7); |
| 356 | |
| 357 | ret = regmap_register_patch(tas2552->regmap, tas2552_init_regs, |
| 358 | ARRAY_SIZE(tas2552_init_regs)); |
| 359 | if (ret != 0) { |
| 360 | dev_err(codec->dev, "Failed to write init registers: %d\n", |
| 361 | ret); |
| 362 | goto patch_fail; |
| 363 | } |
| 364 | |
| 365 | snd_soc_write(codec, TAS2552_CFG_2, TAS2552_CLASSD_EN | |
| 366 | TAS2552_BOOST_EN | TAS2552_APT_EN | |
| 367 | TAS2552_LIM_EN); |
| 368 | return 0; |
| 369 | |
| 370 | patch_fail: |
| 371 | pm_runtime_put(codec->dev); |
| 372 | probe_fail: |
| 373 | if (tas2552->enable_gpio) |
| 374 | gpiod_set_value(tas2552->enable_gpio, 0); |
| 375 | |
| 376 | regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), |
| 377 | tas2552->supplies); |
| 378 | return -EIO; |
| 379 | } |
| 380 | |
| 381 | static int tas2552_codec_remove(struct snd_soc_codec *codec) |
| 382 | { |
| 383 | struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec); |
| 384 | |
| 385 | if (tas2552->enable_gpio) |
| 386 | gpiod_set_value(tas2552->enable_gpio, 0); |
| 387 | |
| 388 | return 0; |
| 389 | }; |
| 390 | |
| 391 | #ifdef CONFIG_PM |
| 392 | static int tas2552_suspend(struct snd_soc_codec *codec) |
| 393 | { |
| 394 | struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec); |
| 395 | int ret; |
| 396 | |
| 397 | ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), |
| 398 | tas2552->supplies); |
| 399 | |
| 400 | if (ret != 0) |
| 401 | dev_err(codec->dev, "Failed to disable supplies: %d\n", |
| 402 | ret); |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | static int tas2552_resume(struct snd_soc_codec *codec) |
| 407 | { |
| 408 | struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec); |
| 409 | int ret; |
| 410 | |
| 411 | ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), |
| 412 | tas2552->supplies); |
| 413 | |
| 414 | if (ret != 0) { |
| 415 | dev_err(codec->dev, "Failed to enable supplies: %d\n", |
| 416 | ret); |
| 417 | } |
| 418 | |
| 419 | return 0; |
| 420 | } |
| 421 | #else |
| 422 | #define tas2552_suspend NULL |
| 423 | #define tas2552_resume NULL |
| 424 | #endif |
| 425 | |
| 426 | static struct snd_soc_codec_driver soc_codec_dev_tas2552 = { |
| 427 | .probe = tas2552_codec_probe, |
| 428 | .remove = tas2552_codec_remove, |
| 429 | .suspend = tas2552_suspend, |
| 430 | .resume = tas2552_resume, |
| 431 | .controls = tas2552_snd_controls, |
| 432 | .num_controls = ARRAY_SIZE(tas2552_snd_controls), |
| 433 | }; |
| 434 | |
| 435 | static const struct regmap_config tas2552_regmap_config = { |
| 436 | .reg_bits = 8, |
| 437 | .val_bits = 8, |
| 438 | |
| 439 | .max_register = TAS2552_MAX_REG, |
| 440 | .reg_defaults = tas2552_reg_defs, |
| 441 | .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs), |
| 442 | .cache_type = REGCACHE_RBTREE, |
| 443 | }; |
| 444 | |
| 445 | static int tas2552_probe(struct i2c_client *client, |
| 446 | const struct i2c_device_id *id) |
| 447 | { |
| 448 | struct device *dev; |
| 449 | struct tas2552_data *data; |
| 450 | int ret; |
| 451 | int i; |
| 452 | |
| 453 | dev = &client->dev; |
| 454 | data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); |
| 455 | if (data == NULL) |
| 456 | return -ENOMEM; |
| 457 | |
| 458 | data->enable_gpio = devm_gpiod_get(dev, "enable"); |
| 459 | if (IS_ERR(data->enable_gpio)) { |
| 460 | ret = PTR_ERR(data->enable_gpio); |
| 461 | if (ret != -ENOENT && ret != -ENOSYS) |
| 462 | return ret; |
| 463 | |
| 464 | data->enable_gpio = NULL; |
| 465 | } else { |
| 466 | gpiod_direction_output(data->enable_gpio, 0); |
| 467 | } |
| 468 | |
| 469 | data->tas2552_client = client; |
| 470 | data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config); |
| 471 | if (IS_ERR(data->regmap)) { |
| 472 | ret = PTR_ERR(data->regmap); |
| 473 | dev_err(&client->dev, "Failed to allocate register map: %d\n", |
| 474 | ret); |
| 475 | return ret; |
| 476 | } |
| 477 | |
| 478 | for (i = 0; i < ARRAY_SIZE(data->supplies); i++) |
| 479 | data->supplies[i].supply = tas2552_supply_names[i]; |
| 480 | |
| 481 | ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies), |
| 482 | data->supplies); |
| 483 | if (ret != 0) |
| 484 | dev_err(dev, "Failed to request supplies: %d\n", ret); |
| 485 | |
| 486 | pm_runtime_set_active(&client->dev); |
| 487 | pm_runtime_set_autosuspend_delay(&client->dev, 1000); |
| 488 | pm_runtime_use_autosuspend(&client->dev); |
| 489 | pm_runtime_enable(&client->dev); |
| 490 | pm_runtime_mark_last_busy(&client->dev); |
| 491 | pm_runtime_put_sync_autosuspend(&client->dev); |
| 492 | |
| 493 | dev_set_drvdata(&client->dev, data); |
| 494 | |
| 495 | ret = snd_soc_register_codec(&client->dev, |
| 496 | &soc_codec_dev_tas2552, |
| 497 | tas2552_dai, ARRAY_SIZE(tas2552_dai)); |
| 498 | if (ret < 0) |
| 499 | dev_err(&client->dev, "Failed to register codec: %d\n", ret); |
| 500 | |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | static int tas2552_i2c_remove(struct i2c_client *client) |
| 505 | { |
| 506 | snd_soc_unregister_codec(&client->dev); |
| 507 | return 0; |
| 508 | } |
| 509 | |
| 510 | static const struct i2c_device_id tas2552_id[] = { |
| 511 | { "tas2552", 0 }, |
| 512 | { } |
| 513 | }; |
| 514 | MODULE_DEVICE_TABLE(i2c, tas2552_id); |
| 515 | |
| 516 | #if IS_ENABLED(CONFIG_OF) |
| 517 | static const struct of_device_id tas2552_of_match[] = { |
| 518 | { .compatible = "ti,tas2552", }, |
| 519 | {}, |
| 520 | }; |
| 521 | MODULE_DEVICE_TABLE(of, tas2552_of_match); |
| 522 | #endif |
| 523 | |
| 524 | static struct i2c_driver tas2552_i2c_driver = { |
| 525 | .driver = { |
| 526 | .name = "tas2552", |
| 527 | .owner = THIS_MODULE, |
| 528 | .of_match_table = of_match_ptr(tas2552_of_match), |
| 529 | .pm = &tas2552_pm, |
| 530 | }, |
| 531 | .probe = tas2552_probe, |
| 532 | .remove = tas2552_i2c_remove, |
| 533 | .id_table = tas2552_id, |
| 534 | }; |
| 535 | |
| 536 | module_i2c_driver(tas2552_i2c_driver); |
| 537 | |
| 538 | MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>"); |
| 539 | MODULE_DESCRIPTION("TAS2552 Audio amplifier driver"); |
| 540 | MODULE_LICENSE("GPL"); |