Sachin Bhayare | eeb8889 | 2018-01-02 16:36:01 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2016, 2018, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #define pr_fmt(fmt) "%s: " fmt, __func__ |
| 14 | |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/bitops.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/mutex.h> |
| 20 | #include <linux/iopoll.h> |
| 21 | #include <linux/types.h> |
Sachin Bhayare | 3d3767e | 2018-01-02 21:10:57 +0530 | [diff] [blame] | 22 | #include <linux/extcon.h> |
Sachin Bhayare | eeb8889 | 2018-01-02 16:36:01 +0530 | [diff] [blame] | 23 | #include <linux/gcd.h> |
| 24 | |
| 25 | #include "mdss_hdmi_audio.h" |
| 26 | #include "mdss_hdmi_util.h" |
| 27 | |
| 28 | #define HDMI_AUDIO_INFO_FRAME_PACKET_HEADER 0x84 |
| 29 | #define HDMI_AUDIO_INFO_FRAME_PACKET_VERSION 0x1 |
| 30 | #define HDMI_AUDIO_INFO_FRAME_PACKET_LENGTH 0x0A |
| 31 | |
| 32 | #define HDMI_KHZ_TO_HZ 1000 |
| 33 | #define HDMI_MHZ_TO_HZ 1000000 |
| 34 | #define HDMI_ACR_N_MULTIPLIER 128 |
| 35 | #define DEFAULT_AUDIO_SAMPLE_RATE_HZ 48000 |
| 36 | |
| 37 | /* Supported HDMI Audio channels */ |
| 38 | enum hdmi_audio_channels { |
| 39 | AUDIO_CHANNEL_2 = 2, |
| 40 | AUDIO_CHANNEL_3, |
| 41 | AUDIO_CHANNEL_4, |
| 42 | AUDIO_CHANNEL_5, |
| 43 | AUDIO_CHANNEL_6, |
| 44 | AUDIO_CHANNEL_7, |
| 45 | AUDIO_CHANNEL_8, |
| 46 | }; |
| 47 | |
| 48 | /* parameters for clock regeneration */ |
| 49 | struct hdmi_audio_acr { |
| 50 | u32 n; |
| 51 | u32 cts; |
| 52 | }; |
| 53 | |
| 54 | enum hdmi_audio_sample_rates { |
| 55 | AUDIO_SAMPLE_RATE_32KHZ, |
| 56 | AUDIO_SAMPLE_RATE_44_1KHZ, |
| 57 | AUDIO_SAMPLE_RATE_48KHZ, |
| 58 | AUDIO_SAMPLE_RATE_88_2KHZ, |
| 59 | AUDIO_SAMPLE_RATE_96KHZ, |
| 60 | AUDIO_SAMPLE_RATE_176_4KHZ, |
| 61 | AUDIO_SAMPLE_RATE_192KHZ, |
| 62 | AUDIO_SAMPLE_RATE_MAX |
| 63 | }; |
| 64 | |
| 65 | struct hdmi_audio { |
| 66 | struct dss_io_data *io; |
| 67 | struct msm_hdmi_audio_setup_params params; |
Sachin Bhayare | 3d3767e | 2018-01-02 21:10:57 +0530 | [diff] [blame] | 68 | struct extcon_dev sdev; |
Sachin Bhayare | eeb8889 | 2018-01-02 16:36:01 +0530 | [diff] [blame] | 69 | u32 pclk; |
| 70 | bool ack_enabled; |
| 71 | bool audio_ack_enabled; |
| 72 | atomic_t ack_pending; |
| 73 | }; |
| 74 | |
| 75 | static void hdmi_audio_get_audio_sample_rate(u32 *sample_rate_hz) |
| 76 | { |
| 77 | u32 rate = *sample_rate_hz; |
| 78 | |
| 79 | switch (rate) { |
| 80 | case 32000: |
| 81 | *sample_rate_hz = AUDIO_SAMPLE_RATE_32KHZ; |
| 82 | break; |
| 83 | case 44100: |
| 84 | *sample_rate_hz = AUDIO_SAMPLE_RATE_44_1KHZ; |
| 85 | break; |
| 86 | case 48000: |
| 87 | *sample_rate_hz = AUDIO_SAMPLE_RATE_48KHZ; |
| 88 | break; |
| 89 | case 88200: |
| 90 | *sample_rate_hz = AUDIO_SAMPLE_RATE_88_2KHZ; |
| 91 | break; |
| 92 | case 96000: |
| 93 | *sample_rate_hz = AUDIO_SAMPLE_RATE_96KHZ; |
| 94 | break; |
| 95 | case 176400: |
| 96 | *sample_rate_hz = AUDIO_SAMPLE_RATE_176_4KHZ; |
| 97 | break; |
| 98 | case 192000: |
| 99 | *sample_rate_hz = AUDIO_SAMPLE_RATE_192KHZ; |
| 100 | break; |
| 101 | default: |
| 102 | pr_debug("%d unchanged\n", rate); |
| 103 | break; |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | static void hdmi_audio_get_acr_param(u32 pclk, u32 fs, |
| 108 | struct hdmi_audio_acr *acr) |
| 109 | { |
| 110 | u32 div, mul; |
| 111 | |
| 112 | if (!acr) { |
| 113 | pr_err("invalid data\n"); |
| 114 | return; |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * as per HDMI specification, N/CTS = (128*fs)/pclk. |
| 119 | * get the ratio using this formula. |
| 120 | */ |
| 121 | acr->n = HDMI_ACR_N_MULTIPLIER * fs; |
| 122 | acr->cts = pclk; |
| 123 | |
| 124 | /* get the greatest common divisor for the ratio */ |
| 125 | div = gcd(acr->n, acr->cts); |
| 126 | |
| 127 | /* get the n and cts values wrt N/CTS formula */ |
| 128 | acr->n /= div; |
| 129 | acr->cts /= div; |
| 130 | |
| 131 | /* |
| 132 | * as per HDMI specification, 300 <= 128*fs/N <= 1500 |
| 133 | * with a target of 128*fs/N = 1000. To get closest |
| 134 | * value without truncating fractional values, find |
| 135 | * the corresponding multiplier |
| 136 | */ |
| 137 | mul = ((HDMI_ACR_N_MULTIPLIER * fs / HDMI_KHZ_TO_HZ) |
| 138 | + (acr->n - 1)) / acr->n; |
| 139 | |
| 140 | acr->n *= mul; |
| 141 | acr->cts *= mul; |
| 142 | } |
| 143 | |
| 144 | static void hdmi_audio_acr_enable(struct hdmi_audio *audio) |
| 145 | { |
| 146 | struct dss_io_data *io; |
| 147 | struct hdmi_audio_acr acr; |
| 148 | struct msm_hdmi_audio_setup_params *params; |
| 149 | u32 pclk, layout, multiplier = 1, sample_rate; |
| 150 | u32 acr_pkt_ctl, aud_pkt_ctl2, acr_reg_cts, acr_reg_n; |
| 151 | |
| 152 | if (!audio) { |
| 153 | pr_err("invalid input\n"); |
| 154 | return; |
| 155 | } |
| 156 | |
| 157 | io = audio->io; |
| 158 | params = &audio->params; |
| 159 | pclk = audio->pclk; |
| 160 | sample_rate = params->sample_rate_hz; |
| 161 | |
| 162 | hdmi_audio_get_acr_param(pclk * HDMI_KHZ_TO_HZ, sample_rate, &acr); |
| 163 | hdmi_audio_get_audio_sample_rate(&sample_rate); |
| 164 | |
| 165 | layout = params->num_of_channels == AUDIO_CHANNEL_2 ? 0 : 1; |
| 166 | |
| 167 | pr_debug("n=%u, cts=%u, layout=%u\n", acr.n, acr.cts, layout); |
| 168 | |
| 169 | /* AUDIO_PRIORITY | SOURCE */ |
| 170 | acr_pkt_ctl = BIT(31) | BIT(8); |
| 171 | |
| 172 | switch (sample_rate) { |
| 173 | case AUDIO_SAMPLE_RATE_44_1KHZ: |
| 174 | acr_pkt_ctl |= 0x2 << 4; |
| 175 | acr.cts <<= 12; |
| 176 | |
| 177 | acr_reg_cts = HDMI_ACR_44_0; |
| 178 | acr_reg_n = HDMI_ACR_44_1; |
| 179 | break; |
| 180 | case AUDIO_SAMPLE_RATE_48KHZ: |
| 181 | acr_pkt_ctl |= 0x3 << 4; |
| 182 | acr.cts <<= 12; |
| 183 | |
| 184 | acr_reg_cts = HDMI_ACR_48_0; |
| 185 | acr_reg_n = HDMI_ACR_48_1; |
| 186 | break; |
| 187 | case AUDIO_SAMPLE_RATE_192KHZ: |
| 188 | multiplier = 4; |
| 189 | acr.n >>= 2; |
| 190 | |
| 191 | acr_pkt_ctl |= 0x3 << 4; |
| 192 | acr.cts <<= 12; |
| 193 | |
| 194 | acr_reg_cts = HDMI_ACR_48_0; |
| 195 | acr_reg_n = HDMI_ACR_48_1; |
| 196 | break; |
| 197 | case AUDIO_SAMPLE_RATE_176_4KHZ: |
| 198 | multiplier = 4; |
| 199 | acr.n >>= 2; |
| 200 | |
| 201 | acr_pkt_ctl |= 0x2 << 4; |
| 202 | acr.cts <<= 12; |
| 203 | |
| 204 | acr_reg_cts = HDMI_ACR_44_0; |
| 205 | acr_reg_n = HDMI_ACR_44_1; |
| 206 | break; |
| 207 | case AUDIO_SAMPLE_RATE_96KHZ: |
| 208 | multiplier = 2; |
| 209 | acr.n >>= 1; |
| 210 | |
| 211 | acr_pkt_ctl |= 0x3 << 4; |
| 212 | acr.cts <<= 12; |
| 213 | |
| 214 | acr_reg_cts = HDMI_ACR_48_0; |
| 215 | acr_reg_n = HDMI_ACR_48_1; |
| 216 | break; |
| 217 | case AUDIO_SAMPLE_RATE_88_2KHZ: |
| 218 | multiplier = 2; |
| 219 | acr.n >>= 1; |
| 220 | |
| 221 | acr_pkt_ctl |= 0x2 << 4; |
| 222 | acr.cts <<= 12; |
| 223 | |
| 224 | acr_reg_cts = HDMI_ACR_44_0; |
| 225 | acr_reg_n = HDMI_ACR_44_1; |
| 226 | break; |
| 227 | default: |
| 228 | multiplier = 1; |
| 229 | |
| 230 | acr_pkt_ctl |= 0x1 << 4; |
| 231 | acr.cts <<= 12; |
| 232 | |
| 233 | acr_reg_cts = HDMI_ACR_32_0; |
| 234 | acr_reg_n = HDMI_ACR_32_1; |
| 235 | break; |
| 236 | } |
| 237 | |
| 238 | aud_pkt_ctl2 = BIT(0) | (layout << 1); |
| 239 | |
| 240 | /* N_MULTIPLE(multiplier) */ |
| 241 | acr_pkt_ctl &= ~(7 << 16); |
| 242 | acr_pkt_ctl |= (multiplier & 0x7) << 16; |
| 243 | |
| 244 | /* SEND | CONT */ |
| 245 | acr_pkt_ctl |= BIT(0) | BIT(1); |
| 246 | |
| 247 | DSS_REG_W(io, acr_reg_cts, acr.cts); |
| 248 | DSS_REG_W(io, acr_reg_n, acr.n); |
| 249 | DSS_REG_W(io, HDMI_ACR_PKT_CTRL, acr_pkt_ctl); |
| 250 | DSS_REG_W(io, HDMI_AUDIO_PKT_CTRL2, aud_pkt_ctl2); |
| 251 | } |
| 252 | |
| 253 | static void hdmi_audio_acr_setup(struct hdmi_audio *audio, bool on) |
| 254 | { |
| 255 | if (on) |
| 256 | hdmi_audio_acr_enable(audio); |
| 257 | else |
| 258 | DSS_REG_W(audio->io, HDMI_ACR_PKT_CTRL, 0); |
| 259 | } |
| 260 | |
| 261 | static void hdmi_audio_infoframe_setup(struct hdmi_audio *audio, bool enabled) |
| 262 | { |
| 263 | struct dss_io_data *io = NULL; |
| 264 | u32 channels, channel_allocation, level_shift, down_mix, layout; |
| 265 | u32 hdmi_debug_reg = 0, audio_info_0_reg = 0, audio_info_1_reg = 0; |
| 266 | u32 audio_info_ctrl_reg, aud_pck_ctrl_2_reg; |
| 267 | u32 check_sum, sample_present; |
| 268 | |
| 269 | if (!audio) { |
| 270 | pr_err("invalid input\n"); |
| 271 | return; |
| 272 | } |
| 273 | |
| 274 | io = audio->io; |
| 275 | if (!io->base) { |
| 276 | pr_err("core io not inititalized\n"); |
| 277 | return; |
| 278 | } |
| 279 | |
| 280 | audio_info_ctrl_reg = DSS_REG_R(io, HDMI_INFOFRAME_CTRL0); |
| 281 | audio_info_ctrl_reg &= ~0xF0; |
| 282 | |
| 283 | if (!enabled) |
| 284 | goto end; |
| 285 | |
| 286 | channels = audio->params.num_of_channels - 1; |
| 287 | channel_allocation = audio->params.channel_allocation; |
| 288 | level_shift = audio->params.level_shift; |
| 289 | down_mix = audio->params.down_mix; |
| 290 | sample_present = audio->params.sample_present; |
| 291 | |
| 292 | layout = audio->params.num_of_channels == AUDIO_CHANNEL_2 ? 0 : 1; |
| 293 | aud_pck_ctrl_2_reg = BIT(0) | (layout << 1); |
| 294 | DSS_REG_W(io, HDMI_AUDIO_PKT_CTRL2, aud_pck_ctrl_2_reg); |
| 295 | |
| 296 | audio_info_1_reg |= channel_allocation & 0xFF; |
| 297 | audio_info_1_reg |= ((level_shift & 0xF) << 11); |
| 298 | audio_info_1_reg |= ((down_mix & 0x1) << 15); |
| 299 | |
| 300 | check_sum = 0; |
| 301 | check_sum += HDMI_AUDIO_INFO_FRAME_PACKET_HEADER; |
| 302 | check_sum += HDMI_AUDIO_INFO_FRAME_PACKET_VERSION; |
| 303 | check_sum += HDMI_AUDIO_INFO_FRAME_PACKET_LENGTH; |
| 304 | check_sum += channels; |
| 305 | check_sum += channel_allocation; |
| 306 | check_sum += (level_shift & 0xF) << 3 | (down_mix & 0x1) << 7; |
| 307 | check_sum &= 0xFF; |
| 308 | check_sum = (u8) (256 - check_sum); |
| 309 | |
| 310 | audio_info_0_reg |= check_sum & 0xFF; |
| 311 | audio_info_0_reg |= ((channels & 0x7) << 8); |
| 312 | |
| 313 | /* Enable Audio InfoFrame Transmission */ |
| 314 | audio_info_ctrl_reg |= 0xF0; |
| 315 | |
| 316 | if (layout) { |
| 317 | /* Set the Layout bit */ |
| 318 | hdmi_debug_reg |= BIT(4); |
| 319 | |
| 320 | /* Set the Sample Present bits */ |
| 321 | hdmi_debug_reg |= sample_present & 0xF; |
| 322 | } |
| 323 | end: |
| 324 | DSS_REG_W(io, HDMI_DEBUG, hdmi_debug_reg); |
| 325 | DSS_REG_W(io, HDMI_AUDIO_INFO0, audio_info_0_reg); |
| 326 | DSS_REG_W(io, HDMI_AUDIO_INFO1, audio_info_1_reg); |
| 327 | DSS_REG_W(io, HDMI_INFOFRAME_CTRL0, audio_info_ctrl_reg); |
| 328 | } |
| 329 | |
| 330 | static int hdmi_audio_on(void *ctx, u32 pclk, |
| 331 | struct msm_hdmi_audio_setup_params *params) |
| 332 | { |
| 333 | struct hdmi_audio *audio = ctx; |
| 334 | int rc = 0; |
| 335 | |
| 336 | if (!audio) { |
| 337 | pr_err("invalid input\n"); |
| 338 | rc = -EINVAL; |
| 339 | goto end; |
| 340 | } |
| 341 | |
| 342 | audio->pclk = pclk; |
| 343 | audio->params = *params; |
| 344 | |
| 345 | if (!audio->params.num_of_channels) { |
| 346 | audio->params.sample_rate_hz = DEFAULT_AUDIO_SAMPLE_RATE_HZ; |
| 347 | audio->params.num_of_channels = AUDIO_CHANNEL_2; |
| 348 | } |
| 349 | |
| 350 | hdmi_audio_acr_setup(audio, true); |
| 351 | hdmi_audio_infoframe_setup(audio, true); |
| 352 | |
| 353 | pr_debug("HDMI Audio: Enabled\n"); |
| 354 | end: |
| 355 | return rc; |
| 356 | } |
| 357 | |
| 358 | static void hdmi_audio_off(void *ctx) |
| 359 | { |
| 360 | struct hdmi_audio *audio = ctx; |
| 361 | |
| 362 | if (!audio) { |
| 363 | pr_err("invalid input\n"); |
| 364 | return; |
| 365 | } |
| 366 | |
| 367 | hdmi_audio_infoframe_setup(audio, false); |
| 368 | hdmi_audio_acr_setup(audio, false); |
| 369 | |
| 370 | pr_debug("HDMI Audio: Disabled\n"); |
| 371 | } |
| 372 | |
| 373 | static void hdmi_audio_notify(void *ctx, int val) |
| 374 | { |
| 375 | struct hdmi_audio *audio = ctx; |
| 376 | int state = 0; |
| 377 | bool switched; |
| 378 | |
| 379 | if (!audio) { |
| 380 | pr_err("invalid input\n"); |
| 381 | return; |
| 382 | } |
| 383 | |
| 384 | state = audio->sdev.state; |
| 385 | if (state == val) |
| 386 | return; |
| 387 | |
| 388 | if (audio->ack_enabled && |
| 389 | atomic_read(&audio->ack_pending)) { |
| 390 | pr_err("%s ack pending, not notifying %s\n", |
| 391 | state ? "connect" : "disconnect", |
| 392 | val ? "connect" : "disconnect"); |
| 393 | return; |
| 394 | } |
| 395 | |
Sachin Bhayare | 3d3767e | 2018-01-02 21:10:57 +0530 | [diff] [blame] | 396 | extcon_set_state_sync(&audio->sdev, 0, val); |
Sachin Bhayare | eeb8889 | 2018-01-02 16:36:01 +0530 | [diff] [blame] | 397 | switched = audio->sdev.state != state; |
| 398 | |
| 399 | if (audio->ack_enabled && switched) |
| 400 | atomic_set(&audio->ack_pending, 1); |
| 401 | |
| 402 | pr_debug("audio %s %s\n", switched ? "switched to" : "same as", |
| 403 | audio->sdev.state ? "HDMI" : "SPKR"); |
| 404 | } |
| 405 | |
| 406 | static void hdmi_audio_ack(void *ctx, u32 ack, u32 hpd) |
| 407 | { |
| 408 | struct hdmi_audio *audio = ctx; |
| 409 | u32 ack_hpd; |
| 410 | |
| 411 | if (!audio) { |
| 412 | pr_err("invalid input\n"); |
| 413 | return; |
| 414 | } |
| 415 | |
| 416 | if (ack & AUDIO_ACK_SET_ENABLE) { |
| 417 | audio->ack_enabled = ack & AUDIO_ACK_ENABLE ? |
| 418 | true : false; |
| 419 | |
| 420 | pr_debug("audio ack feature %s\n", |
| 421 | audio->ack_enabled ? "enabled" : "disabled"); |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | if (!audio->ack_enabled) |
| 426 | return; |
| 427 | |
| 428 | atomic_set(&audio->ack_pending, 0); |
| 429 | |
| 430 | ack_hpd = ack & AUDIO_ACK_CONNECT; |
| 431 | |
| 432 | pr_debug("acknowledging %s\n", |
| 433 | ack_hpd ? "connect" : "disconnect"); |
| 434 | |
| 435 | if (ack_hpd != hpd) { |
| 436 | pr_debug("unbalanced audio state, ack %d, hpd %d\n", |
| 437 | ack_hpd, hpd); |
| 438 | |
| 439 | hdmi_audio_notify(ctx, hpd); |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | static void hdmi_audio_reset(void *ctx) |
| 444 | { |
| 445 | struct hdmi_audio *audio = ctx; |
| 446 | |
| 447 | if (!audio) { |
| 448 | pr_err("invalid input\n"); |
| 449 | return; |
| 450 | } |
| 451 | |
| 452 | atomic_set(&audio->ack_pending, 0); |
| 453 | } |
| 454 | |
| 455 | static void hdmi_audio_status(void *ctx, struct hdmi_audio_status *status) |
| 456 | { |
| 457 | struct hdmi_audio *audio = ctx; |
| 458 | |
| 459 | if (!audio || !status) { |
| 460 | pr_err("invalid input\n"); |
| 461 | return; |
| 462 | } |
| 463 | |
| 464 | status->ack_enabled = audio->ack_enabled; |
| 465 | status->ack_pending = atomic_read(&audio->ack_pending); |
| 466 | status->switched = audio->sdev.state; |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * hdmi_audio_register() - audio registeration function |
| 471 | * @data: registeration initialization data |
| 472 | * |
| 473 | * This API configures audio module for client to use HDMI audio. |
| 474 | * Provides audio functionalities which client can call. |
| 475 | * Initializes internal data structures. |
| 476 | * |
| 477 | * Return: pointer to audio data that client needs to pass on |
| 478 | * calling audio functions. |
| 479 | */ |
| 480 | void *hdmi_audio_register(struct hdmi_audio_init_data *data) |
| 481 | { |
| 482 | struct hdmi_audio *audio = NULL; |
| 483 | int rc = 0; |
| 484 | |
| 485 | if (!data) |
| 486 | goto end; |
| 487 | |
| 488 | audio = kzalloc(sizeof(*audio), GFP_KERNEL); |
| 489 | if (!audio) |
| 490 | goto end; |
| 491 | |
| 492 | audio->sdev.name = "hdmi_audio"; |
Sachin Bhayare | 3d3767e | 2018-01-02 21:10:57 +0530 | [diff] [blame] | 493 | rc = extcon_dev_register(&audio->sdev); |
Sachin Bhayare | eeb8889 | 2018-01-02 16:36:01 +0530 | [diff] [blame] | 494 | if (rc) { |
| 495 | pr_err("audio switch registration failed\n"); |
| 496 | kzfree(audio); |
| 497 | goto end; |
| 498 | } |
| 499 | |
| 500 | audio->io = data->io; |
| 501 | |
| 502 | data->ops->on = hdmi_audio_on; |
| 503 | data->ops->off = hdmi_audio_off; |
| 504 | data->ops->notify = hdmi_audio_notify; |
| 505 | data->ops->ack = hdmi_audio_ack; |
| 506 | data->ops->reset = hdmi_audio_reset; |
| 507 | data->ops->status = hdmi_audio_status; |
| 508 | end: |
| 509 | return audio; |
| 510 | } |
| 511 | |
| 512 | /** |
| 513 | * hdmi_audio_unregister() - unregister audio module |
| 514 | * @ctx: audio module's data |
| 515 | * |
| 516 | * Delete audio module's instance and allocated resources |
| 517 | */ |
| 518 | void hdmi_audio_unregister(void *ctx) |
| 519 | { |
| 520 | struct hdmi_audio *audio = ctx; |
| 521 | |
| 522 | if (audio) { |
Sachin Bhayare | 3d3767e | 2018-01-02 21:10:57 +0530 | [diff] [blame] | 523 | extcon_dev_unregister(&audio->sdev); |
Sachin Bhayare | eeb8889 | 2018-01-02 16:36:01 +0530 | [diff] [blame] | 524 | kfree(ctx); |
| 525 | } |
| 526 | } |