Meng Wang | 43bbb87 | 2018-12-10 12:32:05 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Vignesh Kulothungan | 2ce6784 | 2018-09-25 16:40:29 -0700 | [diff] [blame] | 2 | /* Copyright (c) 2013-2018, The Linux Foundation. All rights reserved. |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 3 | */ |
| 4 | |
| 5 | #include <linux/init.h> |
| 6 | #include <linux/err.h> |
| 7 | #include <linux/module.h> |
| 8 | #include <linux/platform_device.h> |
| 9 | #include <linux/slab.h> |
| 10 | #include <linux/dma-mapping.h> |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 11 | #include <sound/core.h> |
| 12 | #include <sound/soc.h> |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 13 | #include <sound/pcm.h> |
| 14 | #include <sound/initval.h> |
| 15 | #include <sound/control.h> |
| 16 | #include <sound/tlv.h> |
| 17 | #include <asm/dma.h> |
Laxminath Kasam | 605b42f | 2017-08-01 22:02:15 +0530 | [diff] [blame] | 18 | #include <dsp/apr_audio-v2.h> |
| 19 | #include <dsp/q6audio-v2.h> |
| 20 | #include <dsp/q6asm-v2.h> |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 21 | |
| 22 | #include "msm-pcm-routing-v2.h" |
| 23 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 24 | #define DRV_NAME "msm-pcm-loopback-v2" |
| 25 | |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 26 | #define LOOPBACK_VOL_MAX_STEPS 0x2000 |
| 27 | #define LOOPBACK_SESSION_MAX 4 |
| 28 | |
| 29 | static DEFINE_MUTEX(loopback_session_lock); |
| 30 | static const DECLARE_TLV_DB_LINEAR(loopback_rx_vol_gain, 0, |
| 31 | LOOPBACK_VOL_MAX_STEPS); |
| 32 | |
| 33 | struct msm_pcm_loopback { |
| 34 | struct snd_pcm_substream *playback_substream; |
| 35 | struct snd_pcm_substream *capture_substream; |
| 36 | |
| 37 | int instance; |
| 38 | |
| 39 | struct mutex lock; |
| 40 | |
| 41 | uint32_t samp_rate; |
| 42 | uint32_t channel_mode; |
| 43 | |
| 44 | int playback_start; |
| 45 | int capture_start; |
| 46 | int session_id; |
| 47 | struct audio_client *audio_client; |
| 48 | uint32_t volume; |
| 49 | }; |
| 50 | |
| 51 | struct fe_dai_session_map { |
| 52 | char stream_name[32]; |
| 53 | struct msm_pcm_loopback *loopback_priv; |
| 54 | }; |
| 55 | |
| 56 | static struct fe_dai_session_map session_map[LOOPBACK_SESSION_MAX] = { |
| 57 | { {}, NULL}, |
| 58 | { {}, NULL}, |
| 59 | { {}, NULL}, |
| 60 | { {}, NULL}, |
| 61 | }; |
| 62 | |
| 63 | static u32 hfp_tx_mute; |
| 64 | |
| 65 | struct msm_pcm_pdata { |
| 66 | int perf_mode; |
| 67 | }; |
| 68 | |
| 69 | static void stop_pcm(struct msm_pcm_loopback *pcm); |
| 70 | static int msm_pcm_loopback_get_session(struct snd_soc_pcm_runtime *rtd, |
| 71 | struct msm_pcm_loopback **pcm); |
| 72 | |
| 73 | static void msm_pcm_route_event_handler(enum msm_pcm_routing_event event, |
| 74 | void *priv_data) |
| 75 | { |
| 76 | struct msm_pcm_loopback *pcm = priv_data; |
| 77 | |
| 78 | WARN_ON(!pcm); |
| 79 | |
| 80 | pr_debug("%s: event 0x%x\n", __func__, event); |
| 81 | |
| 82 | switch (event) { |
| 83 | case MSM_PCM_RT_EVT_DEVSWITCH: |
| 84 | q6asm_cmd(pcm->audio_client, CMD_PAUSE); |
| 85 | q6asm_cmd(pcm->audio_client, CMD_FLUSH); |
| 86 | q6asm_run(pcm->audio_client, 0, 0, 0); |
| 87 | /* fallthrough */ |
| 88 | default: |
| 89 | pr_err("%s: default event 0x%x\n", __func__, event); |
| 90 | break; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | static void msm_pcm_loopback_event_handler(uint32_t opcode, uint32_t token, |
| 95 | uint32_t *payload, void *priv) |
| 96 | { |
| 97 | pr_debug("%s:\n", __func__); |
| 98 | switch (opcode) { |
| 99 | case APR_BASIC_RSP_RESULT: { |
| 100 | switch (payload[0]) { |
| 101 | break; |
| 102 | default: |
| 103 | break; |
| 104 | } |
| 105 | } |
| 106 | break; |
| 107 | default: |
| 108 | pr_err("%s: Not Supported Event opcode[0x%x]\n", |
| 109 | __func__, opcode); |
| 110 | break; |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | static int msm_loopback_session_mute_get(struct snd_kcontrol *kcontrol, |
| 115 | struct snd_ctl_elem_value *ucontrol) |
| 116 | { |
| 117 | ucontrol->value.integer.value[0] = hfp_tx_mute; |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | static int msm_loopback_session_mute_put(struct snd_kcontrol *kcontrol, |
| 122 | struct snd_ctl_elem_value *ucontrol) |
| 123 | { |
| 124 | int ret = 0, n = 0; |
| 125 | int mute = ucontrol->value.integer.value[0]; |
| 126 | struct msm_pcm_loopback *pcm = NULL; |
| 127 | |
| 128 | if ((mute < 0) || (mute > 1)) { |
| 129 | pr_err(" %s Invalid arguments", __func__); |
| 130 | ret = -EINVAL; |
| 131 | goto done; |
| 132 | } |
| 133 | |
| 134 | pr_debug("%s: mute=%d\n", __func__, mute); |
| 135 | hfp_tx_mute = mute; |
| 136 | for (n = 0; n < LOOPBACK_SESSION_MAX; n++) { |
| 137 | if (!strcmp(session_map[n].stream_name, "MultiMedia6")) |
| 138 | pcm = session_map[n].loopback_priv; |
| 139 | } |
| 140 | if (pcm && pcm->audio_client) { |
| 141 | ret = q6asm_set_mute(pcm->audio_client, mute); |
| 142 | if (ret < 0) |
| 143 | pr_err("%s: Send mute command failed rc=%d\n", |
| 144 | __func__, ret); |
| 145 | } |
| 146 | done: |
| 147 | return ret; |
| 148 | } |
| 149 | |
| 150 | static struct snd_kcontrol_new msm_loopback_controls[] = { |
| 151 | SOC_SINGLE_EXT("HFP TX Mute", SND_SOC_NOPM, 0, 1, 0, |
| 152 | msm_loopback_session_mute_get, |
| 153 | msm_loopback_session_mute_put), |
| 154 | }; |
| 155 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 156 | static int msm_pcm_loopback_probe(struct snd_soc_component *component) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 157 | { |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 158 | snd_soc_add_component_controls(component, msm_loopback_controls, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 159 | ARRAY_SIZE(msm_loopback_controls)); |
| 160 | |
| 161 | return 0; |
| 162 | } |
| 163 | static int pcm_loopback_set_volume(struct msm_pcm_loopback *prtd, |
| 164 | uint32_t volume) |
| 165 | { |
| 166 | int rc = -EINVAL; |
| 167 | |
| 168 | pr_debug("%s: Setting volume 0x%x\n", __func__, volume); |
| 169 | |
| 170 | if (prtd && prtd->audio_client) { |
| 171 | rc = q6asm_set_volume(prtd->audio_client, volume); |
| 172 | if (rc < 0) { |
| 173 | pr_err("%s: Send Volume command failed rc = %d\n", |
| 174 | __func__, rc); |
| 175 | return rc; |
| 176 | } |
| 177 | prtd->volume = volume; |
| 178 | } |
| 179 | return rc; |
| 180 | } |
| 181 | |
| 182 | static int msm_pcm_loopback_get_session(struct snd_soc_pcm_runtime *rtd, |
| 183 | struct msm_pcm_loopback **pcm) |
| 184 | { |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 185 | struct snd_soc_component *component = |
| 186 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 187 | int ret = 0; |
| 188 | int n, index = -1; |
| 189 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 190 | if (!component) { |
| 191 | pr_err("%s: component is NULL\n", __func__); |
| 192 | return -EINVAL; |
| 193 | } |
| 194 | |
| 195 | dev_dbg(component->dev, "%s: stream %s\n", __func__, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 196 | rtd->dai_link->stream_name); |
| 197 | |
| 198 | mutex_lock(&loopback_session_lock); |
| 199 | for (n = 0; n < LOOPBACK_SESSION_MAX; n++) { |
| 200 | if (!strcmp(rtd->dai_link->stream_name, |
| 201 | session_map[n].stream_name)) { |
| 202 | *pcm = session_map[n].loopback_priv; |
| 203 | goto exit; |
| 204 | } |
| 205 | /* |
| 206 | * Store the min index value for allocating a new session. |
| 207 | * Here, if session stream name is not found in the |
| 208 | * existing entries after the loop iteration, then this |
| 209 | * index will be used to allocate the new session. |
| 210 | * This index variable is expected to point to the topmost |
| 211 | * available free session. |
| 212 | */ |
| 213 | if (!(session_map[n].stream_name[0]) && (index < 0)) |
| 214 | index = n; |
| 215 | } |
| 216 | |
| 217 | if (index < 0) { |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 218 | dev_err(component->dev, "%s: Max Sessions allocated\n", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 219 | __func__); |
| 220 | ret = -EAGAIN; |
| 221 | goto exit; |
| 222 | } |
| 223 | |
| 224 | session_map[index].loopback_priv = kzalloc( |
| 225 | sizeof(struct msm_pcm_loopback), GFP_KERNEL); |
| 226 | if (!session_map[index].loopback_priv) { |
| 227 | ret = -ENOMEM; |
| 228 | goto exit; |
| 229 | } |
| 230 | |
| 231 | strlcpy(session_map[index].stream_name, |
| 232 | rtd->dai_link->stream_name, |
| 233 | sizeof(session_map[index].stream_name)); |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 234 | dev_dbg(component->dev, "%s: stream %s index %d\n", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 235 | __func__, session_map[index].stream_name, index); |
| 236 | |
| 237 | mutex_init(&session_map[index].loopback_priv->lock); |
| 238 | *pcm = session_map[index].loopback_priv; |
| 239 | exit: |
| 240 | mutex_unlock(&loopback_session_lock); |
| 241 | return ret; |
| 242 | } |
| 243 | |
| 244 | static int msm_pcm_open(struct snd_pcm_substream *substream) |
| 245 | { |
| 246 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 247 | struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 248 | struct snd_soc_component *component = |
| 249 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 250 | struct msm_pcm_loopback *pcm = NULL; |
| 251 | int ret = 0; |
| 252 | uint16_t bits_per_sample = 16; |
| 253 | struct msm_pcm_routing_evt event; |
| 254 | struct asm_session_mtmx_strtr_param_window_v2_t asm_mtmx_strtr_window; |
| 255 | uint32_t param_id; |
| 256 | struct msm_pcm_pdata *pdata; |
| 257 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 258 | if (!component) { |
| 259 | pr_err("%s: component is NULL\n", __func__); |
| 260 | return -EINVAL; |
| 261 | } |
| 262 | |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 263 | ret = msm_pcm_loopback_get_session(rtd, &pcm); |
| 264 | if (ret) |
| 265 | return ret; |
| 266 | |
| 267 | mutex_lock(&pcm->lock); |
| 268 | |
| 269 | pcm->volume = 0x2000; |
| 270 | |
| 271 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 272 | pcm->playback_substream = substream; |
| 273 | else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 274 | pcm->capture_substream = substream; |
| 275 | |
| 276 | pcm->instance++; |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 277 | dev_dbg(component->dev, "%s: pcm out open: %d,%d\n", __func__, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 278 | pcm->instance, substream->stream); |
| 279 | if (pcm->instance == 2) { |
| 280 | struct snd_soc_pcm_runtime *soc_pcm_rx = |
| 281 | pcm->playback_substream->private_data; |
| 282 | struct snd_soc_pcm_runtime *soc_pcm_tx = |
| 283 | pcm->capture_substream->private_data; |
| 284 | if (pcm->audio_client != NULL) |
| 285 | stop_pcm(pcm); |
| 286 | |
| 287 | pdata = (struct msm_pcm_pdata *) |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 288 | dev_get_drvdata(component->dev); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 289 | if (!pdata) { |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 290 | dev_err(component->dev, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 291 | "%s: platform data not populated\n", __func__); |
| 292 | mutex_unlock(&pcm->lock); |
| 293 | return -EINVAL; |
| 294 | } |
| 295 | |
| 296 | pcm->audio_client = q6asm_audio_client_alloc( |
| 297 | (app_cb)msm_pcm_loopback_event_handler, pcm); |
| 298 | if (!pcm->audio_client) { |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 299 | dev_err(component->dev, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 300 | "%s: Could not allocate memory\n", __func__); |
| 301 | mutex_unlock(&pcm->lock); |
| 302 | return -ENOMEM; |
| 303 | } |
| 304 | pcm->session_id = pcm->audio_client->session; |
| 305 | pcm->audio_client->perf_mode = pdata->perf_mode; |
| 306 | ret = q6asm_open_loopback_v2(pcm->audio_client, |
| 307 | bits_per_sample); |
| 308 | if (ret < 0) { |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 309 | dev_err(component->dev, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 310 | "%s: pcm out open failed\n", __func__); |
| 311 | q6asm_audio_client_free(pcm->audio_client); |
| 312 | mutex_unlock(&pcm->lock); |
| 313 | return -ENOMEM; |
| 314 | } |
| 315 | event.event_func = msm_pcm_route_event_handler; |
| 316 | event.priv_data = (void *) pcm; |
| 317 | msm_pcm_routing_reg_phy_stream(soc_pcm_tx->dai_link->id, |
| 318 | pcm->audio_client->perf_mode, |
| 319 | pcm->session_id, pcm->capture_substream->stream); |
| 320 | msm_pcm_routing_reg_phy_stream_v2(soc_pcm_rx->dai_link->id, |
| 321 | pcm->audio_client->perf_mode, |
| 322 | pcm->session_id, pcm->playback_substream->stream, |
| 323 | event); |
| 324 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 325 | pcm->playback_substream = substream; |
| 326 | ret = pcm_loopback_set_volume(pcm, pcm->volume); |
| 327 | if (ret < 0) |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 328 | dev_err(component->dev, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 329 | "Error %d setting volume", ret); |
| 330 | } |
| 331 | /* Set to largest negative value */ |
| 332 | asm_mtmx_strtr_window.window_lsw = 0x00000000; |
| 333 | asm_mtmx_strtr_window.window_msw = 0x80000000; |
| 334 | param_id = ASM_SESSION_MTMX_STRTR_PARAM_RENDER_WINDOW_START_V2; |
| 335 | q6asm_send_mtmx_strtr_window(pcm->audio_client, |
| 336 | &asm_mtmx_strtr_window, |
| 337 | param_id); |
| 338 | /* Set to largest positive value */ |
| 339 | asm_mtmx_strtr_window.window_lsw = 0xffffffff; |
| 340 | asm_mtmx_strtr_window.window_msw = 0x7fffffff; |
| 341 | param_id = ASM_SESSION_MTMX_STRTR_PARAM_RENDER_WINDOW_END_V2; |
| 342 | q6asm_send_mtmx_strtr_window(pcm->audio_client, |
| 343 | &asm_mtmx_strtr_window, |
| 344 | param_id); |
| 345 | } |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 346 | dev_info(component->dev, "%s: Instance = %d, Stream ID = %s\n", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 347 | __func__, pcm->instance, substream->pcm->id); |
| 348 | runtime->private_data = pcm; |
| 349 | |
| 350 | mutex_unlock(&pcm->lock); |
| 351 | |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | static void stop_pcm(struct msm_pcm_loopback *pcm) |
| 356 | { |
| 357 | struct snd_soc_pcm_runtime *soc_pcm_rx; |
| 358 | struct snd_soc_pcm_runtime *soc_pcm_tx; |
| 359 | |
| 360 | if (pcm->audio_client == NULL) |
| 361 | return; |
| 362 | q6asm_cmd(pcm->audio_client, CMD_CLOSE); |
| 363 | |
| 364 | if (pcm->playback_substream != NULL) { |
| 365 | soc_pcm_rx = pcm->playback_substream->private_data; |
| 366 | msm_pcm_routing_dereg_phy_stream(soc_pcm_rx->dai_link->id, |
| 367 | SNDRV_PCM_STREAM_PLAYBACK); |
| 368 | } |
| 369 | if (pcm->capture_substream != NULL) { |
| 370 | soc_pcm_tx = pcm->capture_substream->private_data; |
| 371 | msm_pcm_routing_dereg_phy_stream(soc_pcm_tx->dai_link->id, |
| 372 | SNDRV_PCM_STREAM_CAPTURE); |
| 373 | } |
| 374 | q6asm_audio_client_free(pcm->audio_client); |
| 375 | pcm->audio_client = NULL; |
| 376 | } |
| 377 | |
| 378 | static int msm_pcm_close(struct snd_pcm_substream *substream) |
| 379 | { |
| 380 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 381 | struct msm_pcm_loopback *pcm = runtime->private_data; |
| 382 | struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 383 | struct snd_soc_component *component = |
| 384 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 385 | int ret = 0, n; |
| 386 | bool found = false; |
| 387 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 388 | if (!component) { |
| 389 | pr_err("%s: component is NULL\n", __func__); |
| 390 | return -EINVAL; |
| 391 | } |
| 392 | |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 393 | mutex_lock(&pcm->lock); |
| 394 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 395 | dev_dbg(component->dev, "%s: end pcm call:%d\n", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 396 | __func__, substream->stream); |
| 397 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 398 | pcm->playback_start = 0; |
| 399 | else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 400 | pcm->capture_start = 0; |
| 401 | |
| 402 | pcm->instance--; |
| 403 | if (!pcm->playback_start || !pcm->capture_start) { |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 404 | dev_dbg(component->dev, "%s: end pcm call\n", __func__); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 405 | stop_pcm(pcm); |
| 406 | } |
| 407 | |
| 408 | if (!pcm->instance) { |
| 409 | mutex_lock(&loopback_session_lock); |
| 410 | for (n = 0; n < LOOPBACK_SESSION_MAX; n++) { |
| 411 | if (!strcmp(rtd->dai_link->stream_name, |
| 412 | session_map[n].stream_name)) { |
| 413 | found = true; |
| 414 | break; |
| 415 | } |
| 416 | } |
| 417 | if (found) { |
| 418 | memset(session_map[n].stream_name, 0, |
| 419 | sizeof(session_map[n].stream_name)); |
| 420 | mutex_unlock(&pcm->lock); |
| 421 | mutex_destroy(&session_map[n].loopback_priv->lock); |
| 422 | session_map[n].loopback_priv = NULL; |
| 423 | kfree(pcm); |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 424 | dev_dbg(component->dev, "%s: stream freed %s\n", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 425 | __func__, rtd->dai_link->stream_name); |
| 426 | mutex_unlock(&loopback_session_lock); |
| 427 | return 0; |
| 428 | } |
| 429 | mutex_unlock(&loopback_session_lock); |
| 430 | } |
| 431 | mutex_unlock(&pcm->lock); |
| 432 | return ret; |
| 433 | } |
| 434 | |
| 435 | static int msm_pcm_prepare(struct snd_pcm_substream *substream) |
| 436 | { |
| 437 | int ret = 0; |
| 438 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 439 | struct msm_pcm_loopback *pcm = runtime->private_data; |
| 440 | struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 441 | struct snd_soc_component *component = |
| 442 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); |
| 443 | |
| 444 | if (!component) { |
| 445 | pr_err("%s: component is NULL\n", __func__); |
| 446 | return -EINVAL; |
| 447 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 448 | |
| 449 | mutex_lock(&pcm->lock); |
| 450 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 451 | dev_dbg(component->dev, "%s: ASM loopback stream:%d\n", |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 452 | __func__, substream->stream); |
| 453 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 454 | if (!pcm->playback_start) |
| 455 | pcm->playback_start = 1; |
| 456 | } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { |
| 457 | if (!pcm->capture_start) |
| 458 | pcm->capture_start = 1; |
| 459 | } |
| 460 | mutex_unlock(&pcm->lock); |
| 461 | |
| 462 | return ret; |
| 463 | } |
| 464 | |
| 465 | static int msm_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
| 466 | { |
| 467 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 468 | struct msm_pcm_loopback *pcm = runtime->private_data; |
| 469 | struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 470 | struct snd_soc_component *component = |
| 471 | snd_soc_rtdcom_lookup(rtd, DRV_NAME); |
| 472 | |
| 473 | if (!component) { |
| 474 | pr_err("%s: component is NULL\n", __func__); |
| 475 | return -EINVAL; |
| 476 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 477 | |
| 478 | switch (cmd) { |
| 479 | case SNDRV_PCM_TRIGGER_START: |
| 480 | case SNDRV_PCM_TRIGGER_RESUME: |
| 481 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 482 | dev_dbg(component->dev, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 483 | "%s: playback_start:%d,capture_start:%d\n", __func__, |
| 484 | pcm->playback_start, pcm->capture_start); |
| 485 | if (pcm->playback_start && pcm->capture_start) |
| 486 | q6asm_run_nowait(pcm->audio_client, 0, 0, 0); |
| 487 | break; |
| 488 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 489 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 490 | case SNDRV_PCM_TRIGGER_STOP: |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 491 | dev_dbg(component->dev, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 492 | "%s:Pause/Stop - playback_start:%d,capture_start:%d\n", |
| 493 | __func__, pcm->playback_start, pcm->capture_start); |
| 494 | if (pcm->playback_start && pcm->capture_start) |
| 495 | q6asm_cmd_nowait(pcm->audio_client, CMD_PAUSE); |
| 496 | break; |
| 497 | default: |
| 498 | pr_err("%s: default cmd %d\n", __func__, cmd); |
| 499 | break; |
| 500 | } |
| 501 | |
| 502 | return 0; |
| 503 | } |
| 504 | |
| 505 | static const struct snd_pcm_ops msm_pcm_ops = { |
| 506 | .open = msm_pcm_open, |
| 507 | .close = msm_pcm_close, |
| 508 | .prepare = msm_pcm_prepare, |
| 509 | .trigger = msm_pcm_trigger, |
| 510 | }; |
| 511 | |
| 512 | static int msm_pcm_volume_ctl_put(struct snd_kcontrol *kcontrol, |
| 513 | struct snd_ctl_elem_value *ucontrol) |
| 514 | { |
| 515 | int rc = 0; |
| 516 | struct snd_pcm_volume *vol = kcontrol->private_data; |
| 517 | struct snd_pcm_substream *substream = vol->pcm->streams[0].substream; |
| 518 | struct msm_pcm_loopback *prtd; |
| 519 | int volume = ucontrol->value.integer.value[0]; |
| 520 | |
| 521 | pr_debug("%s: volume : 0x%x\n", __func__, volume); |
| 522 | if ((!substream) || (!substream->runtime)) { |
| 523 | pr_err("%s substream or runtime not found\n", __func__); |
| 524 | rc = -ENODEV; |
| 525 | goto exit; |
| 526 | } |
| 527 | prtd = substream->runtime->private_data; |
| 528 | if (!prtd) { |
| 529 | rc = -ENODEV; |
| 530 | goto exit; |
| 531 | } |
| 532 | rc = pcm_loopback_set_volume(prtd, volume); |
| 533 | |
| 534 | exit: |
| 535 | return rc; |
| 536 | } |
| 537 | |
| 538 | static int msm_pcm_volume_ctl_get(struct snd_kcontrol *kcontrol, |
| 539 | struct snd_ctl_elem_value *ucontrol) |
| 540 | { |
| 541 | int rc = 0; |
| 542 | struct snd_pcm_volume *vol = snd_kcontrol_chip(kcontrol); |
| 543 | struct snd_pcm_substream *substream = |
| 544 | vol->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; |
| 545 | struct msm_pcm_loopback *prtd; |
| 546 | |
| 547 | pr_debug("%s\n", __func__); |
| 548 | if ((!substream) || (!substream->runtime)) { |
Vignesh Kulothungan | 2ce6784 | 2018-09-25 16:40:29 -0700 | [diff] [blame] | 549 | pr_debug("%s substream or runtime not found\n", __func__); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 550 | rc = -ENODEV; |
| 551 | goto exit; |
| 552 | } |
| 553 | prtd = substream->runtime->private_data; |
| 554 | if (!prtd) { |
| 555 | rc = -ENODEV; |
| 556 | goto exit; |
| 557 | } |
| 558 | ucontrol->value.integer.value[0] = prtd->volume; |
| 559 | |
| 560 | exit: |
| 561 | return rc; |
| 562 | } |
| 563 | |
| 564 | static int msm_pcm_add_volume_controls(struct snd_soc_pcm_runtime *rtd) |
| 565 | { |
| 566 | struct snd_pcm *pcm = rtd->pcm->streams[0].pcm; |
| 567 | struct snd_pcm_volume *volume_info; |
| 568 | struct snd_kcontrol *kctl; |
| 569 | int ret = 0; |
| 570 | |
| 571 | dev_dbg(rtd->dev, "%s, Volume cntrl add\n", __func__); |
| 572 | ret = snd_pcm_add_volume_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 573 | NULL, 1, |
| 574 | rtd->dai_link->id, |
| 575 | &volume_info); |
| 576 | if (ret < 0) |
| 577 | return ret; |
| 578 | kctl = volume_info->kctl; |
| 579 | kctl->put = msm_pcm_volume_ctl_put; |
| 580 | kctl->get = msm_pcm_volume_ctl_get; |
| 581 | kctl->tlv.p = loopback_rx_vol_gain; |
| 582 | return 0; |
| 583 | } |
| 584 | |
| 585 | static int msm_pcm_playback_app_type_cfg_ctl_put(struct snd_kcontrol *kcontrol, |
| 586 | struct snd_ctl_elem_value *ucontrol) |
| 587 | { |
| 588 | u64 fe_id = kcontrol->private_value; |
| 589 | int session_type = SESSION_TYPE_RX; |
| 590 | int be_id = ucontrol->value.integer.value[3]; |
| 591 | struct msm_pcm_stream_app_type_cfg cfg_data = {0, 0, 48000}; |
| 592 | int ret = 0; |
| 593 | |
| 594 | cfg_data.app_type = ucontrol->value.integer.value[0]; |
| 595 | cfg_data.acdb_dev_id = ucontrol->value.integer.value[1]; |
| 596 | if (ucontrol->value.integer.value[2] != 0) |
| 597 | cfg_data.sample_rate = ucontrol->value.integer.value[2]; |
| 598 | pr_debug("%s: fe_id- %llu session_type- %d be_id- %d app_type- %d acdb_dev_id- %d sample_rate- %d\n", |
| 599 | __func__, fe_id, session_type, be_id, |
| 600 | cfg_data.app_type, cfg_data.acdb_dev_id, cfg_data.sample_rate); |
| 601 | ret = msm_pcm_routing_reg_stream_app_type_cfg(fe_id, session_type, |
| 602 | be_id, &cfg_data); |
| 603 | if (ret < 0) |
| 604 | pr_err("%s: msm_pcm_routing_reg_stream_app_type_cfg failed returned %d\n", |
| 605 | __func__, ret); |
| 606 | |
| 607 | return ret; |
| 608 | } |
| 609 | |
| 610 | static int msm_pcm_playback_app_type_cfg_ctl_get(struct snd_kcontrol *kcontrol, |
| 611 | struct snd_ctl_elem_value *ucontrol) |
| 612 | { |
| 613 | u64 fe_id = kcontrol->private_value; |
| 614 | int session_type = SESSION_TYPE_RX; |
| 615 | int be_id = 0; |
| 616 | struct msm_pcm_stream_app_type_cfg cfg_data = {0}; |
| 617 | int ret = 0; |
| 618 | |
| 619 | ret = msm_pcm_routing_get_stream_app_type_cfg(fe_id, session_type, |
| 620 | &be_id, &cfg_data); |
| 621 | if (ret < 0) { |
| 622 | pr_err("%s: msm_pcm_routing_get_stream_app_type_cfg failed returned %d\n", |
| 623 | __func__, ret); |
| 624 | goto done; |
| 625 | } |
| 626 | |
| 627 | ucontrol->value.integer.value[0] = cfg_data.app_type; |
| 628 | ucontrol->value.integer.value[1] = cfg_data.acdb_dev_id; |
| 629 | ucontrol->value.integer.value[2] = cfg_data.sample_rate; |
| 630 | ucontrol->value.integer.value[3] = be_id; |
| 631 | pr_debug("%s: fedai_id %llu, session_type %d, be_id %d, app_type %d, acdb_dev_id %d, sample_rate %d\n", |
| 632 | __func__, fe_id, session_type, be_id, |
| 633 | cfg_data.app_type, cfg_data.acdb_dev_id, cfg_data.sample_rate); |
| 634 | done: |
| 635 | return ret; |
| 636 | } |
| 637 | |
| 638 | static int msm_pcm_capture_app_type_cfg_ctl_put(struct snd_kcontrol *kcontrol, |
| 639 | struct snd_ctl_elem_value *ucontrol) |
| 640 | { |
| 641 | u64 fe_id = kcontrol->private_value; |
| 642 | int session_type = SESSION_TYPE_TX; |
| 643 | int be_id = ucontrol->value.integer.value[3]; |
| 644 | struct msm_pcm_stream_app_type_cfg cfg_data = {0, 0, 48000}; |
| 645 | int ret = 0; |
| 646 | |
| 647 | cfg_data.app_type = ucontrol->value.integer.value[0]; |
| 648 | cfg_data.acdb_dev_id = ucontrol->value.integer.value[1]; |
| 649 | if (ucontrol->value.integer.value[2] != 0) |
| 650 | cfg_data.sample_rate = ucontrol->value.integer.value[2]; |
| 651 | pr_debug("%s: fe_id- %llu session_type- %d be_id- %d app_type- %d acdb_dev_id- %d sample_rate- %d\n", |
| 652 | __func__, fe_id, session_type, be_id, |
| 653 | cfg_data.app_type, cfg_data.acdb_dev_id, cfg_data.sample_rate); |
| 654 | ret = msm_pcm_routing_reg_stream_app_type_cfg(fe_id, session_type, |
| 655 | be_id, &cfg_data); |
| 656 | if (ret < 0) |
| 657 | pr_err("%s: msm_pcm_routing_reg_stream_app_type_cfg failed returned %d\n", |
| 658 | __func__, ret); |
| 659 | |
| 660 | return ret; |
| 661 | } |
| 662 | |
| 663 | static int msm_pcm_capture_app_type_cfg_ctl_get(struct snd_kcontrol *kcontrol, |
| 664 | struct snd_ctl_elem_value *ucontrol) |
| 665 | { |
| 666 | u64 fe_id = kcontrol->private_value; |
| 667 | int session_type = SESSION_TYPE_TX; |
| 668 | int be_id = 0; |
| 669 | struct msm_pcm_stream_app_type_cfg cfg_data = {0}; |
| 670 | int ret = 0; |
| 671 | |
| 672 | ret = msm_pcm_routing_get_stream_app_type_cfg(fe_id, session_type, |
| 673 | &be_id, &cfg_data); |
| 674 | if (ret < 0) { |
| 675 | pr_err("%s: msm_pcm_routing_get_stream_app_type_cfg failed returned %d\n", |
| 676 | __func__, ret); |
| 677 | goto done; |
| 678 | } |
| 679 | |
| 680 | ucontrol->value.integer.value[0] = cfg_data.app_type; |
| 681 | ucontrol->value.integer.value[1] = cfg_data.acdb_dev_id; |
| 682 | ucontrol->value.integer.value[2] = cfg_data.sample_rate; |
| 683 | ucontrol->value.integer.value[3] = be_id; |
| 684 | pr_debug("%s: fedai_id %llu, session_type %d, be_id %d, app_type %d, acdb_dev_id %d, sample_rate %d\n", |
| 685 | __func__, fe_id, session_type, be_id, |
| 686 | cfg_data.app_type, cfg_data.acdb_dev_id, cfg_data.sample_rate); |
| 687 | done: |
| 688 | return ret; |
| 689 | } |
| 690 | |
| 691 | static int msm_pcm_add_app_type_controls(struct snd_soc_pcm_runtime *rtd) |
| 692 | { |
| 693 | struct snd_pcm *pcm = rtd->pcm->streams[0].pcm; |
| 694 | struct snd_pcm_usr *app_type_info; |
| 695 | struct snd_kcontrol *kctl; |
| 696 | const char *playback_mixer_ctl_name = "Audio Stream"; |
| 697 | const char *capture_mixer_ctl_name = "Audio Stream Capture"; |
| 698 | const char *deviceNo = "NN"; |
| 699 | const char *suffix = "App Type Cfg"; |
| 700 | int ctl_len, ret = 0; |
| 701 | |
| 702 | if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { |
| 703 | ctl_len = strlen(playback_mixer_ctl_name) + 1 + |
| 704 | strlen(deviceNo) + 1 + strlen(suffix) + 1; |
| 705 | pr_debug("%s: Playback app type cntrl add\n", __func__); |
| 706 | ret = snd_pcm_add_usr_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 707 | NULL, 1, ctl_len, rtd->dai_link->id, |
| 708 | &app_type_info); |
| 709 | if (ret < 0) |
| 710 | return ret; |
| 711 | kctl = app_type_info->kctl; |
| 712 | snprintf(kctl->id.name, ctl_len, "%s %d %s", |
| 713 | playback_mixer_ctl_name, rtd->pcm->device, suffix); |
| 714 | kctl->put = msm_pcm_playback_app_type_cfg_ctl_put; |
| 715 | kctl->get = msm_pcm_playback_app_type_cfg_ctl_get; |
| 716 | } |
| 717 | |
| 718 | if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { |
| 719 | ctl_len = strlen(capture_mixer_ctl_name) + 1 + |
| 720 | strlen(deviceNo) + 1 + strlen(suffix) + 1; |
| 721 | pr_debug("%s: Capture app type cntrl add\n", __func__); |
| 722 | ret = snd_pcm_add_usr_ctls(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 723 | NULL, 1, ctl_len, rtd->dai_link->id, |
| 724 | &app_type_info); |
| 725 | if (ret < 0) |
| 726 | return ret; |
| 727 | kctl = app_type_info->kctl; |
| 728 | snprintf(kctl->id.name, ctl_len, "%s %d %s", |
| 729 | capture_mixer_ctl_name, rtd->pcm->device, suffix); |
| 730 | kctl->put = msm_pcm_capture_app_type_cfg_ctl_put; |
| 731 | kctl->get = msm_pcm_capture_app_type_cfg_ctl_get; |
| 732 | } |
| 733 | |
| 734 | return 0; |
| 735 | } |
| 736 | |
| 737 | static int msm_pcm_add_controls(struct snd_soc_pcm_runtime *rtd) |
| 738 | { |
| 739 | int ret = 0; |
| 740 | |
| 741 | pr_debug("%s\n", __func__); |
| 742 | ret = msm_pcm_add_volume_controls(rtd); |
| 743 | if (ret) |
| 744 | pr_err("%s: pcm add volume controls failed:%d\n", |
| 745 | __func__, ret); |
| 746 | ret = msm_pcm_add_app_type_controls(rtd); |
| 747 | if (ret) |
| 748 | pr_err("%s: pcm add app type controls failed:%d\n", |
| 749 | __func__, ret); |
| 750 | return ret; |
| 751 | } |
| 752 | |
| 753 | static int msm_asoc_pcm_new(struct snd_soc_pcm_runtime *rtd) |
| 754 | { |
| 755 | struct snd_card *card = rtd->card->snd_card; |
| 756 | int ret = 0; |
| 757 | |
| 758 | if (!card->dev->coherent_dma_mask) |
| 759 | card->dev->coherent_dma_mask = DMA_BIT_MASK(32); |
| 760 | |
| 761 | ret = msm_pcm_add_controls(rtd); |
| 762 | if (ret) |
| 763 | dev_err(rtd->dev, "%s, kctl add failed\n", __func__); |
| 764 | return ret; |
| 765 | } |
| 766 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 767 | static struct snd_soc_component_driver msm_soc_component = { |
| 768 | .name = DRV_NAME, |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 769 | .ops = &msm_pcm_ops, |
| 770 | .pcm_new = msm_asoc_pcm_new, |
| 771 | .probe = msm_pcm_loopback_probe, |
| 772 | }; |
| 773 | |
| 774 | static int msm_pcm_probe(struct platform_device *pdev) |
| 775 | { |
| 776 | struct msm_pcm_pdata *pdata; |
| 777 | |
| 778 | dev_dbg(&pdev->dev, "%s: dev name %s\n", |
| 779 | __func__, dev_name(&pdev->dev)); |
| 780 | |
| 781 | pdata = kzalloc(sizeof(struct msm_pcm_pdata), GFP_KERNEL); |
| 782 | if (!pdata) |
| 783 | return -ENOMEM; |
| 784 | |
| 785 | if (of_property_read_bool(pdev->dev.of_node, |
| 786 | "qcom,msm-pcm-loopback-low-latency")) |
| 787 | pdata->perf_mode = LOW_LATENCY_PCM_MODE; |
| 788 | else |
| 789 | pdata->perf_mode = LEGACY_PCM_MODE; |
| 790 | |
| 791 | dev_set_drvdata(&pdev->dev, pdata); |
| 792 | |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 793 | return snd_soc_register_component(&pdev->dev, |
| 794 | &msm_soc_component, |
| 795 | NULL, 0); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | static int msm_pcm_remove(struct platform_device *pdev) |
| 799 | { |
Meng Wang | ee084a0 | 2018-09-04 16:11:58 +0800 | [diff] [blame] | 800 | snd_soc_unregister_component(&pdev->dev); |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 801 | return 0; |
| 802 | } |
| 803 | |
| 804 | static const struct of_device_id msm_pcm_loopback_dt_match[] = { |
| 805 | {.compatible = "qcom,msm-pcm-loopback"}, |
| 806 | {} |
| 807 | }; |
| 808 | |
| 809 | static struct platform_driver msm_pcm_driver = { |
| 810 | .driver = { |
| 811 | .name = "msm-pcm-loopback", |
| 812 | .owner = THIS_MODULE, |
| 813 | .of_match_table = msm_pcm_loopback_dt_match, |
| 814 | }, |
| 815 | .probe = msm_pcm_probe, |
| 816 | .remove = msm_pcm_remove, |
| 817 | }; |
| 818 | |
Laxminath Kasam | 8b1366a | 2017-10-05 01:44:16 +0530 | [diff] [blame] | 819 | int __init msm_pcm_loopback_init(void) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 820 | { |
| 821 | return platform_driver_register(&msm_pcm_driver); |
| 822 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 823 | |
Asish Bhattacharya | 5faacb3 | 2017-12-04 17:23:15 +0530 | [diff] [blame] | 824 | void msm_pcm_loopback_exit(void) |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 825 | { |
| 826 | platform_driver_unregister(&msm_pcm_driver); |
| 827 | } |
Asish Bhattacharya | 8e2277f | 2017-07-20 18:31:55 +0530 | [diff] [blame] | 828 | |
| 829 | MODULE_DESCRIPTION("PCM loopback platform driver"); |
| 830 | MODULE_LICENSE("GPL v2"); |