The Hardware Voice Activity Detector (HWVAD) is a block
responsible for detect voice activity in a channel selected
by the user. It can be configured in Envelope-based or
Energy-based mode.
There are additional two interrupts for HWVAD, one is event
interrupt, another is error interrupt.
Enable hwvad in parallel with recording.
when voice activity detected, HWVAD will be disabled and
alsa control notification is triggerred.
Signed-off-by: Shengjiu Wang
---
sound/soc/fsl/fsl_micfil.c | 434 +
sound/soc/fsl/fsl_micfil.h | 6 +-
2 files changed, 439 insertions(+), 1 deletion(-)
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index 79ef4e269bc9..eeaa75fb9196 100644
--- a/sound/soc/fsl/fsl_micfil.c
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -47,11 +47,15 @@ struct fsl_micfil {
struct clk *pll11k_clk;
struct snd_dmaengine_dai_dma_data dma_params_rx;
struct sdma_peripheral_config sdmacfg;
+ struct snd_soc_card *card;
unsigned int dataline;
char name[32];
int irq[MICFIL_IRQ_LINES];
enum quality quality;
int dc_remover;
+ int vad_init_mode;
+ int vad_enabled;
+ int vad_detected;
};
struct fsl_micfil_soc_data {
@@ -152,6 +156,152 @@ static int micfil_quality_set(struct snd_kcontrol
*kcontrol,
return micfil_set_quality(micfil);
}
+static const char * const micfil_hwvad_enable[] = {
+ "Disable (Record only)",
+ "Enable (Record with Vad)",
+};
+
+static const char * const micfil_hwvad_init_mode[] = {
+ "Envelope mode", "Energy mode",
+};
+
+static const char * const micfil_hwvad_hpf_texts[] = {
+ "Filter bypass",
+ "Cut-off @1750Hz",
+ "Cut-off @215Hz",
+ "Cut-off @102Hz",
+};
+
+/*
+ * DC Remover Control
+ * Filter Bypassed 1 1
+ * Cut-off @21Hz 0 0
+ * Cut-off @83Hz 0 1
+ * Cut-off @152HZ 1 0
+ */
+static const char * const micfil_dc_remover_texts[] = {
+ "Cut-off @21Hz", "Cut-off @83Hz",
+ "Cut-off @152Hz", "Bypass",
+};
+
+static const struct soc_enum hwvad_enable_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_hwvad_enable),
+ micfil_hwvad_enable);
+static const struct soc_enum hwvad_init_mode_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_hwvad_init_mode),
+ micfil_hwvad_init_mode);
+static const struct soc_enum hwvad_hpf_enum =
+ SOC_ENUM_SINGLE(REG_MICFIL_VAD0_CTRL2, 0,
+ ARRAY_SIZE(micfil_hwvad_hpf_texts),
+ micfil_hwvad_hpf_texts);
+static const struct soc_enum fsl_micfil_dc_remover_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_dc_remover_texts),
+ micfil_dc_remover_texts);
+
+static int micfil_put_dc_remover_state(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ unsigned int *item = ucontrol->value.enumerated.item;
+ int val = snd_soc_enum_item_to_val(e, item[0]);
+ int i = 0, ret = 0;
+ u32 reg_val = 0;
+
+ if (val < 0 || val > 3)
+ return -EINVAL;
+
+ micfil->dc_remover = val;
+
+ /* Calculate total value for all channels */
+ for (i = 0; i < MICFIL_OUTPUT_CHANNELS; i++)
+ reg_val |= val << MICFIL_DC_CHX_SHIFT(i);
+
+ /* Update DC Remover mode for all channels */
+ ret = snd_soc_component_update_bits(comp, REG_MICFIL_DC_CTRL,
+ MICFIL_DC_CTRL_CONFIG, reg_val);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int micfil_get_dc_remover_state(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->dc_remover;
+
+ return 0;
+}
+
+static int hwvad_put_enable(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int *item = ucontrol->value.enumerated.item;
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ int val = snd_soc_enum_item_to_val(e, item[0]);
+
+ micfil->vad_enabled = val;
+
+ return 0;
+}
+
+static int hwvad_get_enable(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ str
