/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "audio_hw_spkr_prot"
/*#define LOG_NDEBUG 0*/
//#define LOG_NDDEBUG 0
#include <errno.h>
#include <math.h>
#include <cutils/log.h>
#include <fcntl.h>
#include "audio_hw.h"
#include "platform.h"
#include "platform_api.h"
#include <sys/stat.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <math.h>
#include <cutils/properties.h>
#include "audio_extn.h"
#include <linux/msm_audio_calibration.h>
#define THERMAL_CLIENT_LIBRARY_PATH "libthermalclient.so"
#ifdef SPKR_PROT_ENABLED
/*Range of spkr temparatures -30C to 80C*/
#define MIN_SPKR_TEMP_Q6 (-30 * (1 << 6))
#define MAX_SPKR_TEMP_Q6 (80 * (1 << 6))
#define VI_FEED_CHANNEL "VI_FEED_TX Channels"
/*Set safe temp value to 40C*/
#define SAFE_SPKR_TEMP 40
#define SAFE_SPKR_TEMP_Q6 (SAFE_SPKR_TEMP * (1 << 6))
/*Range of resistance values 2ohms to 40 ohms*/
#define MIN_RESISTANCE_SPKR_Q24 (2 * (1 << 24))
#define MAX_RESISTANCE_SPKR_Q24 (40 * (1 << 24))
/*Path where the calibration file will be stored*/
#define CALIB_FILE "/data/misc/audio/audio.cal"
/*Time between retries for calibartion or intial wait time
after boot up*/
#define WAIT_TIME_SPKR_CALIB (60 * 1000 * 1000)
#define MIN_SPKR_IDLE_SEC (60 * 30)
/*Once calibration is started sleep for 1 sec to allow
the calibration to kick off*/
#define SLEEP_AFTER_CALIB_START (3000)
/*If calibration is in progress wait for 200 msec before querying
for status again*/
#define WAIT_FOR_GET_CALIB_STATUS (200)
#define GET_SPKR_PROT_CAL_TIMEOUT_MSEC (5000)
/*Speaker states*/
#define SPKR_NOT_CALIBRATED -1
#define SPKR_CALIBRATED 1
/*Speaker processing state*/
#define SPKR_PROCESSING_IN_PROGRESS 1
#define SPKR_PROCESSING_IN_IDLE 0
/*Modes of Speaker Protection*/
enum speaker_protection_mode {
SPKR_PROTECTION_DISABLED = -1,
SPKR_PROTECTION_MODE_PROCESSING = 0,
SPKR_PROTECTION_MODE_CALIBRATE = 1,
};
struct speaker_prot_session {
int spkr_prot_mode;
int spkr_processing_state;
int thermal_client_handle;
pthread_mutex_t mutex_spkr_prot;
pthread_t spkr_calibration_thread;
pthread_mutex_t spkr_prot_thermalsync_mutex;
pthread_cond_t spkr_prot_thermalsync;
int cancel_spkr_calib;
pthread_cond_t spkr_calib_cancel;
pthread_mutex_t spkr_calib_cancelack_mutex;
pthread_cond_t spkr_calibcancel_ack;
pthread_t speaker_prot_threadid;
void *thermal_handle;
void *adev_handle;
int spkr_prot_t0;
struct pcm *pcm_rx;
struct pcm *pcm_tx;
int (*thermal_client_register_callback)
(char *client_name, int (*callback)(int), void *data);
void (*thermal_client_unregister_callback)(int handle);
int (*thermal_client_request)(char *client_name, int req_data);
bool spkr_prot_enable;
bool spkr_in_use;
struct timespec spkr_last_time_used;
};
static struct pcm_config pcm_config_skr_prot = {
.channels = 4,
.rate = 48000,
.period_size = 256,
.period_count = 4,
.format = PCM_FORMAT_S16_LE,
.start_threshold = 0,
.stop_threshold = INT_MAX,
.avail_min = 0,
};
static struct speaker_prot_session handle;
static int vi_feed_no_channels;
static void spkr_prot_set_spkrstatus(bool enable)
{
struct timespec ts;
if (enable)
handle.spkr_in_use = true;
else {
handle.spkr_in_use = false;
clock_gettime(CLOCK_BOOTTIME, &handle.spkr_last_time_used);
}
}
void audio_extn_spkr_prot_calib_cancel(void *adev)
{
pthread_t threadid;
struct audio_usecase *uc_info;
int count = 0;
threadid = pthread_self();
ALOGV("%s: Entry", __func__);
if (pthread_equal(handle.speaker_prot_threadid, threadid) || !adev) {
ALOGV("%s: Calibration not in progress.. nothihg to cancel", __func__);
return;
}
uc_info = get_usecase_from_list(adev, USECASE_AUDIO_SPKR_CALIB_RX);
if (uc_info) {
pthread_mutex_lock(&handle.mutex_spkr_prot);
pthread_mutex_lock(&handle.spkr_calib_cancelack_mutex);
handle.cancel_spkr_calib = 1;
pthread_cond_signal(&handle.spkr_calib_cancel);
pthread_mutex_unlock(&handle.mutex_spkr_prot);
pthread_cond_wait(&handle.spkr_calibcancel_ack,
&handle.spkr_calib_cancelack_mutex);
pthread_mutex_unlock(&handle.spkr_calib_cancelack_mutex);
}
ALOGV("%s: Exit", __func__);
}
static bool is_speaker_in_use(unsigned long *sec)
{
struct timespec temp;
if (!sec) {
ALOGE("%s: Invalid params", __func__);
return true;
}
if (handle.spkr_in_use) {
*sec = 0;
return true;
} else {
clock_gettime(CLOCK_BOOTTIME, &temp);
*sec = temp.tv_sec - handle.spkr_last_time_used.tv_sec;
return false;
}
}
static int get_spkr_prot_cal(int cal_fd,
struct audio_cal_info_msm_spk_prot_status *status)
{
int ret = 0;
struct audio_cal_fb_spk_prot_status cal_data;
if (cal_fd < 0) {
ALOGE("%s: Error: cal_fd = %d", __func__, cal_fd);
ret = -EINVAL;
goto done;
}
if (status == NULL) {
ALOGE("%s: Error: status NULL", __func__);
ret = -EINVAL;
goto done;
}
cal_data.hdr.data_size = sizeof(cal_data);
cal_data.hdr.version = VERSION_0_0;
cal_data.hdr.cal_type = AFE_FB_SPKR_PROT_CAL_TYPE;
cal_data.hdr.cal_type_size = sizeof(cal_data.cal_type);
cal_data.cal_type.cal_hdr.version = VERSION_0_0;
cal_data.cal_type.cal_hdr.buffer_number = 0;
cal_data.cal_type.cal_data.mem_handle = -1;
if (ioctl(cal_fd, AUDIO_GET_CALIBRATION, &cal_data)) {
ALOGE("%s: Error: AUDIO_GET_CALIBRATION failed!",
__func__);
ret = -ENODEV;
goto done;
}
status->r0[SP_V2_SPKR_1] = cal_data.cal_type.cal_info.r0[SP_V2_SPKR_1];
status->r0[SP_V2_SPKR_2] = cal_data.cal_type.cal_info.r0[SP_V2_SPKR_2];
status->status = cal_data.cal_type.cal_info.status;
done:
return ret;
}
static int set_spkr_prot_cal(int cal_fd,
struct audio_cal_info_spk_prot_cfg *protCfg)
{
int ret = 0;
struct audio_cal_fb_spk_prot_cfg cal_data;
char value[PROPERTY_VALUE_MAX];
if (cal_fd < 0) {
ALOGE("%s: Error: cal_fd = %d", __func__, cal_fd);
ret = -EINVAL;
goto done;
}
if (protCfg == NULL) {
ALOGE("%s: Error: status NULL", __func__);
ret = -EINVAL;
goto done;
}
memset(&cal_data, 0, sizeof(cal_data));
cal_data.hdr.data_size = sizeof(cal_data);
cal_data.hdr.version = VERSION_0_0;
cal_data.hdr.cal_type = AFE_FB_SPKR_PROT_CAL_TYPE;
cal_data.hdr.cal_type_size = sizeof(cal_data.cal_type);
cal_data.cal_type.cal_hdr.version = VERSION_0_0;
cal_data.cal_type.cal_hdr.buffer_number = 0;
cal_data.cal_type.cal_info.r0[SP_V2_SPKR_1] = protCfg->r0[SP_V2_SPKR_1];
cal_data.cal_type.cal_info.r0[SP_V2_SPKR_2] = protCfg->r0[SP_V2_SPKR_2];
cal_data.cal_type.cal_info.t0[SP_V2_SPKR_1] = protCfg->t0[SP_V2_SPKR_1];
cal_data.cal_type.cal_info.t0[SP_V2_SPKR_2] = protCfg->t0[SP_V2_SPKR_2];
cal_data.cal_type.cal_info.mode = protCfg->mode;
property_get("persist.spkr.cal.duration", value, "0");
if (atoi(value) > 0) {
ALOGD("%s: quick calibration enabled", __func__);
cal_data.cal_type.cal_info.quick_calib_flag = 1;
} else {
ALOGD("%s: quick calibration disabled", __func__);
cal_data.cal_type.cal_info.quick_calib_flag = 0;
}
cal_data.cal_type.cal_data.mem_handle = -1;
if (ioctl(cal_fd, AUDIO_SET_CALIBRATION, &cal_data)) {
ALOGE("%s: Error: AUDIO_SET_CALIBRATION failed!",
__func__);
ret = -ENODEV;
goto done;
}
done:
return ret;
}
static int vi_feed_get_channels(struct audio_device *adev)
{
struct mixer_ctl *ctl;
const char *mixer_ctl_name = VI_FEED_CHANNEL;
int value;
ALOGV("%s: entry", __func__);
ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
if (!ctl) {
ALOGE("%s: Could not get ctl for mixer cmd - %s",
__func__, mixer_ctl_name);
goto error;
}
value = mixer_ctl_get_value(ctl, 0);
if (value < 0)
goto error;
else
return value+1;
error:
return -EINVAL;
}
// must be called with adev->lock acquired
static int spkr_calibrate(int t0)
{
struct audio_device *adev = handle.adev_handle;
struct audio_cal_info_spk_prot_cfg protCfg;
struct audio_cal_info_msm_spk_prot_status status;
bool cleanup = false, disable_rx = false, disable_tx = false;
int acdb_fd = -1;
struct audio_usecase *uc_info_rx = NULL, *uc_info_tx = NULL;
int32_t pcm_dev_rx_id = -1, pcm_dev_tx_id = -1;
struct timespec ts;
int retry_duration;
if (!adev) {
ALOGE("%s: Invalid params", __func__);
return -EINVAL;
}
if (!list_empty(&adev->usecase_list)) {
ALOGD("%s: Usecase present retry speaker protection", __func__);
return -EAGAIN;
}
acdb_fd = open("/dev/msm_audio_cal",O_RDWR | O_NONBLOCK);
if (acdb_fd < 0) {
ALOGE("%s: spkr_prot_thread open msm_acdb failed", __func__);
return -ENODEV;
} else {
protCfg.mode = MSM_SPKR_PROT_CALIBRATION_IN_PROGRESS;
/* HAL for speaker protection gets only one Temperature */
protCfg.t0[SP_V2_SPKR_1] = t0;
protCfg.t0[SP_V2_SPKR_2] = t0;
if (set_spkr_prot_cal(acdb_fd, &protCfg)) {
ALOGE("%s: spkr_prot_thread set failed AUDIO_SET_SPEAKER_PROT",
__func__);
status.status = -ENODEV;
goto exit;
}
}
uc_info_rx = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase));
if (!uc_info_rx) {
return -ENOMEM;
}
uc_info_rx->id = USECASE_AUDIO_SPKR_CALIB_RX;
uc_info_rx->type = PCM_PLAYBACK;
uc_info_rx->in_snd_device = SND_DEVICE_NONE;
uc_info_rx->stream.out = adev->primary_output;
uc_info_rx->out_snd_device = SND_DEVICE_OUT_SPEAKER_PROTECTED;
disable_rx = true;
list_add_tail(&adev->usecase_list, &uc_info_rx->list);
enable_snd_device(adev, SND_DEVICE_OUT_SPEAKER_PROTECTED);
enable_audio_route(adev, uc_info_rx);
pcm_dev_rx_id = platform_get_pcm_device_id(uc_info_rx->id, PCM_PLAYBACK);
ALOGV("%s: pcm device id %d", __func__, pcm_dev_rx_id);
if (pcm_dev_rx_id < 0) {
ALOGE("%s: Invalid pcm device for usecase (%d)",
__func__, uc_info_rx->id);
status.status = -ENODEV;
goto exit;
}
handle.pcm_rx = handle.pcm_tx = NULL;
handle.pcm_rx = pcm_open(adev->snd_card,
pcm_dev_rx_id,
PCM_OUT, &pcm_config_skr_prot);
if (handle.pcm_rx && !pcm_is_ready(handle.pcm_rx)) {
ALOGE("%s: %s", __func__, pcm_get_error(handle.pcm_rx));
status.status = -EIO;
goto exit;
}
uc_info_tx = (struct audio_usecase *)
calloc(1, sizeof(struct audio_usecase));
if (!uc_info_tx) {
status.status = -ENOMEM;
goto exit;
}
uc_info_tx->id = USECASE_AUDIO_SPKR_CALIB_TX;
uc_info_tx->type = PCM_CAPTURE;
uc_info_tx->in_snd_device = SND_DEVICE_IN_CAPTURE_VI_FEEDBACK;
uc_info_tx->out_snd_device = SND_DEVICE_NONE;
disable_tx = true;
list_add_tail(&adev->usecase_list, &uc_info_tx->list);
enable_snd_device(adev, SND_DEVICE_IN_CAPTURE_VI_FEEDBACK);
enable_audio_route(adev, uc_info_tx);
pcm_dev_tx_id = platform_get_pcm_device_id(uc_info_tx->id, PCM_CAPTURE);
if (pcm_dev_tx_id < 0) {
ALOGE("%s: Invalid pcm device for usecase (%d)",
__func__, uc_info_tx->id);
status.status = -ENODEV;
goto exit;
}
handle.pcm_tx = pcm_open(adev->snd_card,
pcm_dev_tx_id,
PCM_IN, &pcm_config_skr_prot);
if (handle.pcm_tx && !pcm_is_ready(handle.pcm_tx)) {
ALOGE("%s: %s", __func__, pcm_get_error(handle.pcm_tx));
status.status = -EIO;
goto exit;
}
if (pcm_start(handle.pcm_rx) < 0) {
ALOGE("%s: pcm start for RX failed", __func__);
status.status = -EINVAL;
goto exit;
}
if (pcm_start(handle.pcm_tx) < 0) {
ALOGE("%s: pcm start for TX failed", __func__);
status.status = -EINVAL;
goto exit;
}
cleanup = true;
clock_gettime(CLOCK_REALTIME, &ts);
ts.tv_sec += (SLEEP_AFTER_CALIB_START/1000);
ts.tv_nsec = 0;
pthread_mutex_lock(&handle.mutex_spkr_prot);
pthread_mutex_unlock(&adev->lock);
(void)pthread_cond_timedwait(&handle.spkr_calib_cancel,
&handle.mutex_spkr_prot, &ts);
ALOGD("%s: Speaker calibration done", __func__);
pthread_mutex_lock(&handle.spkr_calib_cancelack_mutex);
if (handle.cancel_spkr_calib) {
status.status = -EAGAIN;
goto exit;
}
if (acdb_fd >= 0) {
status.status = -EINVAL;
retry_duration = 0;
while (!get_spkr_prot_cal(acdb_fd, &status) &&
retry_duration < GET_SPKR_PROT_CAL_TIMEOUT_MSEC) {
if (!status.status) {
ALOGD("%s: spkr_prot_thread calib Success R0 %d %d",
__func__, status.r0[SP_V2_SPKR_1], status.r0[SP_V2_SPKR_2]);
FILE *fp;
vi_feed_no_channels = vi_feed_get_channels(adev);
ALOGD("%s: vi_feed_no_channels %d", __func__, vi_feed_no_channels);
if (vi_feed_no_channels < 0) {
ALOGE("%s: no of channels negative !!", __func__);
/* limit the number of channels to 2*/
vi_feed_no_channels = 2;
}
fp = fopen(CALIB_FILE,"wb");
if (!fp) {
ALOGE("%s: spkr_prot_thread File open failed %s",
__func__, strerror(errno));
status.status = -ENODEV;
} else {
int i;
/* HAL for speaker protection is always calibrating for stereo usecase*/
for (i = 0; i < vi_feed_no_channels; i++) {
fwrite(&status.r0[i], sizeof(status.r0[i]), 1, fp);
fwrite(&protCfg.t0[i], sizeof(protCfg.t0[i]), 1, fp);
}
fclose(fp);
}
break;
} else if (status.status == -EAGAIN) {
ALOGD("%s: spkr_prot_thread try again", __func__);
usleep(WAIT_FOR_GET_CALIB_STATUS * 1000);
retry_duration += WAIT_FOR_GET_CALIB_STATUS;
} else {
ALOGE("%s: spkr_prot_thread get failed status %d",
__func__, status.status);
break;
}
}
}
exit:
if (handle.pcm_rx)
pcm_close(handle.pcm_rx);
handle.pcm_rx = NULL;
if (handle.pcm_tx)
pcm_close(handle.pcm_tx);
handle.pcm_tx = NULL;
/* Clear TX calibration to handset mic */
platform_send_audio_calibration(adev->platform, SND_DEVICE_IN_HANDSET_MIC);
if (!status.status) {
protCfg.mode = MSM_SPKR_PROT_CALIBRATED;
protCfg.r0[SP_V2_SPKR_1] = status.r0[SP_V2_SPKR_1];
protCfg.r0[SP_V2_SPKR_2] = status.r0[SP_V2_SPKR_2];
if (set_spkr_prot_cal(acdb_fd, &protCfg))
ALOGE("%s: spkr_prot_thread disable calib mode", __func__);
else
handle.spkr_prot_mode = MSM_SPKR_PROT_CALIBRATED;
} else {
protCfg.mode = MSM_SPKR_PROT_NOT_CALIBRATED;
handle.spkr_prot_mode = MSM_SPKR_PROT_NOT_CALIBRATED;
if (set_spkr_prot_cal(acdb_fd, &protCfg))
ALOGE("%s: spkr_prot_thread disable calib mode failed", __func__);
}
if (acdb_fd >= 0)
close(acdb_fd);
if (!handle.cancel_spkr_calib && cleanup) {
pthread_mutex_unlock(&handle.spkr_calib_cancelack_mutex);
pthread_cond_wait(&handle.spkr_calib_cancel, &handle.mutex_spkr_prot);
pthread_mutex_lock(&handle.spkr_calib_cancelack_mutex);
}
if (disable_rx) {
list_remove(&uc_info_rx->list);
disable_snd_device(adev, SND_DEVICE_OUT_SPEAKER_PROTECTED);
disable_audio_route(adev, uc_info_rx);
}
if (disable_tx) {
list_remove(&uc_info_tx->list);
disable_snd_device(adev, SND_DEVICE_IN_CAPTURE_VI_FEEDBACK);
disable_audio_route(adev, uc_info_tx);
}
if (uc_info_rx) free(uc_info_rx);
if (uc_info_tx) free(uc_info_tx);
if (cleanup) {
if (handle.cancel_spkr_calib)
pthread_cond_signal(&handle.spkr_calibcancel_ack);
handle.cancel_spkr_calib = 0;
pthread_mutex_unlock(&handle.spkr_calib_cancelack_mutex);
pthread_mutex_unlock(&handle.mutex_spkr_prot);
pthread_mutex_lock(&adev->lock);
}
return status.status;
}
static void* spkr_calibration_thread()
{
unsigned long sec = 0;
int t0;
bool goahead = false;
struct audio_cal_info_spk_prot_cfg protCfg;
FILE *fp;
int acdb_fd;
struct audio_device *adev = handle.adev_handle;
unsigned long min_idle_time = MIN_SPKR_IDLE_SEC;
char value[PROPERTY_VALUE_MAX];
/* If the value of this persist.spkr.cal.duration is 0
* then it means it will take 30min to calibrate
* and if the value is greater than zero then it would take
* that much amount of time to calibrate.
*/
property_get("persist.spkr.cal.duration", value, "0");
if (atoi(value) > 0)
min_idle_time = atoi(value);
handle.speaker_prot_threadid = pthread_self();
ALOGD("spkr_prot_thread enable prot Entry");
acdb_fd = open("/dev/msm_audio_cal",O_RDWR | O_NONBLOCK);
if (acdb_fd >= 0) {
/*Set processing mode with t0/r0*/
protCfg.mode = MSM_SPKR_PROT_NOT_CALIBRATED;
if (set_spkr_prot_cal(acdb_fd, &protCfg)) {
ALOGE("%s: spkr_prot_thread enable prot failed", __func__);
handle.spkr_prot_mode = MSM_SPKR_PROT_DISABLED;
close(acdb_fd);
} else
handle.spkr_prot_mode = MSM_SPKR_PROT_NOT_CALIBRATED;
} else {
handle.spkr_prot_mode = MSM_SPKR_PROT_DISABLED;
ALOGE("%s: Failed to open acdb node", __func__);
}
if (handle.spkr_prot_mode == MSM_SPKR_PROT_DISABLED) {
ALOGD("%s: Speaker protection disabled", __func__);
pthread_exit(0);
return NULL;
}
fp = fopen(CALIB_FILE,"rb");
if (fp) {
int i;
bool spkr_calibrated = true;
/* HAL for speaker protection is always calibrating for stereo usecase*/
vi_feed_no_channels = vi_feed_get_channels(adev);
ALOGD("%s: vi_feed_no_channels %d", __func__, vi_feed_no_channels);
if (vi_feed_no_channels < 0) {
ALOGE("%s: no of channels negative !!", __func__);
/* limit the number of channels to 2*/
vi_feed_no_channels = 2;
}
for (i = 0; i < vi_feed_no_channels; i++) {
fread(&protCfg.r0[i], sizeof(protCfg.r0[i]), 1, fp);
fread(&protCfg.t0[i], sizeof(protCfg.t0[i]), 1, fp);
}
ALOGD("%s: spkr_prot_thread r0 value %d %d",
__func__, protCfg.r0[SP_V2_SPKR_1], protCfg.r0[SP_V2_SPKR_2]);
ALOGD("%s: spkr_prot_thread t0 value %d %d",
__func__, protCfg.t0[SP_V2_SPKR_1], protCfg.t0[SP_V2_SPKR_2]);
fclose(fp);
/*Valid tempature range: -30C to 80C(in q6 format)
Valid Resistance range: 2 ohms to 40 ohms(in q24 format)*/
for (i = 0; i < vi_feed_no_channels; i++) {
if (!((protCfg.t0[i] > MIN_SPKR_TEMP_Q6) && (protCfg.t0[i] < MAX_SPKR_TEMP_Q6)
&& (protCfg.r0[i] >= MIN_RESISTANCE_SPKR_Q24)
&& (protCfg.r0[i] < MAX_RESISTANCE_SPKR_Q24))) {
spkr_calibrated = false;
break;
}
}
if (spkr_calibrated) {
ALOGD("%s: Spkr calibrated", __func__);
protCfg.mode = MSM_SPKR_PROT_CALIBRATED;
if (set_spkr_prot_cal(acdb_fd, &protCfg)) {
ALOGE("%s: enable prot failed", __func__);
handle.spkr_prot_mode = MSM_SPKR_PROT_DISABLED;
} else
handle.spkr_prot_mode = MSM_SPKR_PROT_CALIBRATED;
close(acdb_fd);
pthread_exit(0);
return NULL;
}
close(acdb_fd);
}
while (1) {
ALOGV("%s: start calibration", __func__);
if (!handle.thermal_client_request("spkr",1)) {
ALOGD("%s: wait for callback from thermal daemon", __func__);
pthread_mutex_lock(&handle.spkr_prot_thermalsync_mutex);
pthread_cond_wait(&handle.spkr_prot_thermalsync,
&handle.spkr_prot_thermalsync_mutex);
/*Convert temp into q6 format*/
t0 = (handle.spkr_prot_t0 * (1 << 6));
pthread_mutex_unlock(&handle.spkr_prot_thermalsync_mutex);
if (t0 < MIN_SPKR_TEMP_Q6 || t0 > MAX_SPKR_TEMP_Q6) {
ALOGE("%s: Calibration temparature error %d", __func__,
handle.spkr_prot_t0);
continue;
}
ALOGD("%s: Request t0 success value %d", __func__,
handle.spkr_prot_t0);
} else {
ALOGE("%s: Request t0 failed", __func__);
/*Assume safe value for temparature*/
t0 = SAFE_SPKR_TEMP_Q6;
}
goahead = false;
pthread_mutex_lock(&adev->lock);
if (is_speaker_in_use(&sec)) {
ALOGD("%s: Speaker in use retry calibration", __func__);
pthread_mutex_unlock(&adev->lock);
continue;
} else {
ALOGD("%s: speaker idle %ld min time %ld", __func__, sec, min_idle_time);
if (sec < min_idle_time) {
ALOGD("%s: speaker idle is less retry", __func__);
pthread_mutex_unlock(&adev->lock);
continue;
}
goahead = true;
}
if (!list_empty(&adev->usecase_list)) {
ALOGD("%s: Usecase active re-try calibration", __func__);
goahead = false;
pthread_mutex_unlock(&adev->lock);
}
if (goahead) {
int status;
status = spkr_calibrate(t0);
pthread_mutex_unlock(&adev->lock);
if (status == -EAGAIN) {
ALOGE("%s: failed to calibrate try again %s",
__func__, strerror(status));
continue;
} else {
ALOGE("%s: calibrate status %s", __func__, strerror(status));
}
ALOGD("%s: spkr_prot_thread end calibration", __func__);
break;
}
}
if (handle.thermal_client_handle)
handle.thermal_client_unregister_callback(handle.thermal_client_handle);
handle.thermal_client_handle = 0;
if (handle.thermal_handle)
dlclose(handle.thermal_handle);
handle.thermal_handle = NULL;
pthread_exit(0);
return NULL;
}
static int thermal_client_callback(int temp)
{
pthread_mutex_lock(&handle.spkr_prot_thermalsync_mutex);
ALOGD("%s: spkr_prot set t0 %d and signal", __func__, temp);
if (handle.spkr_prot_mode == MSM_SPKR_PROT_NOT_CALIBRATED)
handle.spkr_prot_t0 = temp;
pthread_cond_signal(&handle.spkr_prot_thermalsync);
pthread_mutex_unlock(&handle.spkr_prot_thermalsync_mutex);
return 0;
}
void audio_extn_spkr_prot_init(void *adev)
{
char value[PROPERTY_VALUE_MAX];
ALOGD("%s: Initialize speaker protection module", __func__);
memset(&handle, 0, sizeof(handle));
if (!adev) {
ALOGE("%s: Invalid params", __func__);
return;
}
property_get("persist.speaker.prot.enable", value, "");
handle.spkr_prot_enable = false;
if (!strncmp("true", value, 4))
handle.spkr_prot_enable = true;
if (!handle.spkr_prot_enable) {
ALOGD("%s: Speaker protection disabled", __func__);
return;
}
handle.adev_handle = adev;
handle.spkr_prot_mode = MSM_SPKR_PROT_DISABLED;
handle.spkr_processing_state = SPKR_PROCESSING_IN_IDLE;
handle.spkr_prot_t0 = -1;
pthread_cond_init(&handle.spkr_prot_thermalsync, NULL);
pthread_cond_init(&handle.spkr_calib_cancel, NULL);
pthread_cond_init(&handle.spkr_calibcancel_ack, NULL);
pthread_mutex_init(&handle.mutex_spkr_prot, NULL);
pthread_mutex_init(&handle.spkr_calib_cancelack_mutex, NULL);
pthread_mutex_init(&handle.spkr_prot_thermalsync_mutex, NULL);
handle.thermal_handle = dlopen(THERMAL_CLIENT_LIBRARY_PATH,
RTLD_NOW);
if (!handle.thermal_handle) {
ALOGE("%s: DLOPEN for thermal client failed", __func__);
} else {
/*Query callback function symbol*/
handle.thermal_client_register_callback =
(int (*)(char *, int (*)(int),void *))
dlsym(handle.thermal_handle, "thermal_client_register_callback");
handle.thermal_client_unregister_callback =
(void (*)(int) )
dlsym(handle.thermal_handle, "thermal_client_unregister_callback");
if (!handle.thermal_client_register_callback ||
!handle.thermal_client_unregister_callback) {
ALOGE("%s: DLSYM thermal_client_register_callback failed", __func__);
} else {
/*Register callback function*/
handle.thermal_client_handle =
handle.thermal_client_register_callback("spkr", thermal_client_callback, NULL);
if (!handle.thermal_client_handle) {
ALOGE("%s: thermal_client_register_callback failed", __func__);
} else {
ALOGD("%s: spkr_prot thermal_client_register_callback success", __func__);
handle.thermal_client_request = (int (*)(char *, int))
dlsym(handle.thermal_handle, "thermal_client_request");
}
}
}
if (handle.thermal_client_request) {
ALOGD("%s: Create calibration thread", __func__);
(void)pthread_create(&handle.spkr_calibration_thread,
(const pthread_attr_t *) NULL, spkr_calibration_thread, &handle);
} else {
ALOGE("%s: thermal_client_request failed", __func__);
if (handle.thermal_client_handle &&
handle.thermal_client_unregister_callback)
handle.thermal_client_unregister_callback(handle.thermal_client_handle);
if (handle.thermal_handle)
dlclose(handle.thermal_handle);
handle.thermal_handle = NULL;
handle.spkr_prot_enable = false;
}
if (handle.spkr_prot_enable) {
char platform[PROPERTY_VALUE_MAX];
property_get("ro.board.platform", platform, "");
if (!strncmp("apq8084", platform, sizeof("apq8084"))) {
platform_set_snd_device_backend(SND_DEVICE_OUT_VOICE_SPEAKER,
"speaker-protected",
"SLIMBUS_0_RX");
}
}
}
int audio_extn_spkr_prot_get_acdb_id(snd_device_t snd_device)
{
int acdb_id;
switch(snd_device) {
case SND_DEVICE_OUT_SPEAKER:
acdb_id = platform_get_snd_device_acdb_id(SND_DEVICE_OUT_SPEAKER_PROTECTED);
break;
case SND_DEVICE_OUT_VOICE_SPEAKER:
acdb_id = platform_get_snd_device_acdb_id(SND_DEVICE_OUT_VOICE_SPEAKER_PROTECTED);
break;
default:
acdb_id = -EINVAL;
break;
}
return acdb_id;
}
int audio_extn_get_spkr_prot_snd_device(snd_device_t snd_device)
{
if (!handle.spkr_prot_enable)
return snd_device;
switch(snd_device) {
case SND_DEVICE_OUT_SPEAKER:
return SND_DEVICE_OUT_SPEAKER_PROTECTED;
case SND_DEVICE_OUT_VOICE_SPEAKER:
return SND_DEVICE_OUT_VOICE_SPEAKER_PROTECTED;
default:
return snd_device;
}
}
int audio_extn_spkr_prot_start_processing(snd_device_t snd_device)
{
struct audio_usecase *uc_info_tx;
struct audio_device *adev = handle.adev_handle;
int32_t pcm_dev_tx_id = -1, ret = 0;
ALOGV("%s: Entry", __func__);
if (!adev) {
ALOGE("%s: Invalid params", __func__);
return -EINVAL;
}
snd_device = audio_extn_get_spkr_prot_snd_device(snd_device);
spkr_prot_set_spkrstatus(true);
uc_info_tx = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase));
if (!uc_info_tx) {
return -ENOMEM;
}
ALOGV("%s: snd_device(%d: %s)", __func__, snd_device,
platform_get_snd_device_name(snd_device));
audio_route_apply_and_update_path(adev->audio_route,
platform_get_snd_device_name(snd_device));
pthread_mutex_lock(&handle.mutex_spkr_prot);
if (handle.spkr_processing_state == SPKR_PROCESSING_IN_IDLE) {
uc_info_tx->id = USECASE_AUDIO_SPKR_CALIB_TX;
uc_info_tx->type = PCM_CAPTURE;
uc_info_tx->in_snd_device = SND_DEVICE_IN_CAPTURE_VI_FEEDBACK;
uc_info_tx->out_snd_device = SND_DEVICE_NONE;
handle.pcm_tx = NULL;
list_add_tail(&adev->usecase_list, &uc_info_tx->list);
enable_snd_device(adev, SND_DEVICE_IN_CAPTURE_VI_FEEDBACK);
enable_audio_route(adev, uc_info_tx);
pcm_dev_tx_id = platform_get_pcm_device_id(uc_info_tx->id, PCM_CAPTURE);
if (pcm_dev_tx_id < 0) {
ALOGE("%s: Invalid pcm device for usecase (%d)",
__func__, uc_info_tx->id);
ret = -ENODEV;
goto exit;
}
handle.pcm_tx = pcm_open(adev->snd_card,
pcm_dev_tx_id,
PCM_IN, &pcm_config_skr_prot);
if (handle.pcm_tx && !pcm_is_ready(handle.pcm_tx)) {
ALOGE("%s: %s", __func__, pcm_get_error(handle.pcm_tx));
ret = -EIO;
goto exit;
}
if (pcm_start(handle.pcm_tx) < 0) {
ALOGE("%s: pcm start for TX failed", __func__);
ret = -EINVAL;
}
}
exit:
/* Clear VI feedback cal and replace with handset MIC */
platform_send_audio_calibration(adev->platform, SND_DEVICE_IN_HANDSET_MIC);
if (ret) {
if (handle.pcm_tx)
pcm_close(handle.pcm_tx);
handle.pcm_tx = NULL;
list_remove(&uc_info_tx->list);
disable_snd_device(adev, SND_DEVICE_IN_CAPTURE_VI_FEEDBACK);
disable_audio_route(adev, uc_info_tx);
free(uc_info_tx);
} else
handle.spkr_processing_state = SPKR_PROCESSING_IN_PROGRESS;
pthread_mutex_unlock(&handle.mutex_spkr_prot);
ALOGV("%s: Exit", __func__);
return ret;
}
void audio_extn_spkr_prot_stop_processing(snd_device_t snd_device)
{
struct audio_usecase *uc_info_tx;
struct audio_device *adev = handle.adev_handle;
ALOGV("%s: Entry", __func__);
snd_device = audio_extn_get_spkr_prot_snd_device(snd_device);
spkr_prot_set_spkrstatus(false);
pthread_mutex_lock(&handle.mutex_spkr_prot);
if (adev && handle.spkr_processing_state == SPKR_PROCESSING_IN_PROGRESS) {
uc_info_tx = get_usecase_from_list(adev, USECASE_AUDIO_SPKR_CALIB_TX);
if (handle.pcm_tx)
pcm_close(handle.pcm_tx);
handle.pcm_tx = NULL;
disable_snd_device(adev, SND_DEVICE_IN_CAPTURE_VI_FEEDBACK);
if (uc_info_tx) {
list_remove(&uc_info_tx->list);
disable_audio_route(adev, uc_info_tx);
free(uc_info_tx);
}
}
handle.spkr_processing_state = SPKR_PROCESSING_IN_IDLE;
pthread_mutex_unlock(&handle.mutex_spkr_prot);
if (adev)
audio_route_reset_and_update_path(adev->audio_route,
platform_get_snd_device_name(snd_device));
ALOGV("%s: Exit", __func__);
}
bool audio_extn_spkr_prot_is_enabled()
{
return handle.spkr_prot_enable;
}
#endif /*SPKR_PROT_ENABLED*/