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hal: ultrasound: Implement RampDown 

This matches stock audio HAL from veux.

Change-Id: Ie2b74420747c12a5fe372832198a148393c32108
This commit is contained in:
Alexander Winkowski 2024-10-06 13:33:00 +00:00
parent 1eeb1abcef
commit afd6b63494
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GPG Key ID: 72762A66704CDE44
1 changed files with 29 additions and 0 deletions
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29
hal/audio_extn/ultrasound.c
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@ -27,6 +27,7 @@
#define ULTRASOUND_CALIBRATION_FILE "/mnt/vendor/persist/audio/us_cal" #define ULTRASOUND_CALIBRATION_FILE "/mnt/vendor/persist/audio/us_cal"
#define ULTRASOUND_CALIBRATION_MIXER "Ultrasound Calibration Data" #define ULTRASOUND_CALIBRATION_MIXER "Ultrasound Calibration Data"
#define ULTRASOUND_RAMPDOWN_MIXER "Ultrasound RampDown"
enum { enum {
ULTRASOUND_STATUS_DEFAULT, ULTRASOUND_STATUS_DEFAULT,
@ -82,6 +83,32 @@ static void us_cal_load(void)
ALOGE("%s: Could not set ctl, error:%d ", __func__, rc); ALOGE("%s: Could not set ctl, error:%d ", __func__, rc);
} }
static void us_ramp_down(void)
{
struct mixer_ctl *ctl;
int rc;
ALOGD("%s: enter", __func__);
ctl = mixer_get_ctl_by_name(us->adev->mixer, ULTRASOUND_RAMPDOWN_MIXER);
if (!ctl) {
ALOGD("%s: Could not get ctl for mixer cmd - %s",
__func__, ULTRASOUND_RAMPDOWN_MIXER);
goto exit;
}
rc = mixer_ctl_set_enum_by_string(ctl, "On");
if (rc < 0) {
ALOGE("%s: Could not set ctl, error:%d ", __func__, rc);
goto exit;
}
usleep(10000);
exit:
ALOGD("%s: exit", __func__);
}
int us_init(struct audio_device *adev) int us_init(struct audio_device *adev)
{ {
int rc = 0; int rc = 0;
@ -130,6 +157,8 @@ static int stop_us(void)
ALOGD("%s: enter usecase: ultrasound", __func__); ALOGD("%s: enter usecase: ultrasound", __func__);
us->state = ULTRASOUND_STATUS_STOPPED; us->state = ULTRASOUND_STATUS_STOPPED;
us_ramp_down();
if (us->rx_pcm) { if (us->rx_pcm) {
pcm_close(us->rx_pcm); pcm_close(us->rx_pcm);
us->rx_pcm = NULL; us->rx_pcm = NULL;