asoc: codec: es755: headset redetection

In the current implementation, codec mis-detects the headphone as
headset esp when user plug-in the headphone slowly.

Added change to redetect the headset after 250 millisec.
No redetection in case of Headphone.

K-control to change the detection delay:
adb shell tinymix "HS Delay" "250" [250 millisec]
Supported range: 50 millisec - 2000 millisec

bug: 200072731

Change-Id: I8e1bab8e06d0f75a7b1e4e33326bff8eee6af3cf
Reviewed-on: http://git-master/r/719996
Signed-off-by: Srinivas Anne <sanne@nvidia.com>
Reviewed-on: http://git-master/r/721197
Reviewed-on: http://git-master/r/761514
Reviewed-by: Dara Ramesh <dramesh@nvidia.com>
Reviewed-by: Sumit Bhattacharya <sumitb@nvidia.com>

diff --git a/sound/soc/codecs/audience/es755.c b/sound/soc/codecs/audience/es755.c
old mode 100644 (file)
new mode 100755 (executable)
index f52fbd5..077ddf5
--- a/sound/soc/codecs/audience/es755.c
+++ b/sound/soc/codecs/audience/es755.c
@@ -1389,6 +1389,26 @@ static int es755_get_event_status(struct snd_kcontrol *kcontrol,
 
        return 0;
 }
+static int es755_put_hs_delay_value(struct snd_kcontrol *kcontrol,
+                                       struct snd_ctl_elem_value *ucontrol)
+{
+       int rc = 0;
+
+       escore_priv.hs_delay = ucontrol->value.integer.value[0];
+
+       if (escore_priv.hs_delay < MIN_HS_REDETECTION_DELAY)
+               escore_priv.hs_delay = MIN_HS_REDETECTION_DELAY;
+
+       return rc;
+}
+
+static int es755_get_hs_delay_value(struct snd_kcontrol *kcontrol,
+                                       struct snd_ctl_elem_value *ucontrol)
+{
+       ucontrol->value.integer.value[0] = escore_priv.hs_delay;
+
+       return 0;
+}
 
 static const char * const es755_vs_power_state_texts[] = {
        "None", "Sleep", "MP_Sleep", "MP_Cmd", "Normal", "Overlay", "Low_Power",
@@ -1435,6 +1455,9 @@ static struct snd_kcontrol_new es755_snd_controls[] = {
        SOC_ENUM_EXT("Streaming Mode", es755_streaming_mode_enum,
                           escore_get_streaming_mode,
                           escore_put_streaming_mode),
+       SOC_SINGLE_EXT("HS Delay",
+                      ES_HS_DELAY, 0, 2000, 0, es755_get_hs_delay_value,
+                      es755_put_hs_delay_value),
 };
 
 static int es_voice_sense_add_snd_soc_controls(struct snd_soc_codec *codec)
@@ -2225,6 +2248,7 @@ static int es755_codec_intr(struct notifier_block *self, unsigned long action,
        union es755_accdet_reg accdet_reg;
        int value;
        int rc = 0;
+       static int redetect_hs=1;
        u8 impd_level;
        u8 mg_sel_force;
        u8 mg_select;
@@ -2243,6 +2267,7 @@ static int es755_codec_intr(struct notifier_block *self, unsigned long action,
 
                        pr_info("%s(): Plug event\n", __func__);
                        /* Enable MIC Detection */
+redetect_HS:
                        rc = es755_mic_config(escore);
                        if (rc < 0) {
                                pr_err("%s(): MIC config failed\n", __func__);
@@ -2299,6 +2324,15 @@ static int es755_codec_intr(struct notifier_block *self, unsigned long action,
                        if (impd_level) {
                                pr_info("%s(): Headset detected\n", __func__);
 
+                               if (redetect_hs) {
+                                       redetect_hs=0;
+                                       msleep(escore_priv.hs_delay);
+                                       pr_debug("%s(): Redetect HS MIC with Delay %d\n",
+                                               __func__,escore_priv.hs_delay);
+                                       goto redetect_HS;
+                               } else
+                                       redetect_hs=1;
+
                                is_invalid_type = false;
                                /* MIC Impedence - 1 to 5 */
                                if (impd_level < MIC_IMPEDANCE_LEVEL) {
@@ -2342,6 +2376,7 @@ static int es755_codec_intr(struct notifier_block *self, unsigned long action,
                        } else {
                                pr_info("%s(): Headphone detected\n",
                                                __func__);
+                               redetect_hs=1;
 
                                snd_soc_jack_report(escore->jack,
                                        SND_JACK_HEADPHONE,
@@ -2778,6 +2813,7 @@ int es755_core_probe(struct device *dev)
 #if defined(CONFIG_SND_SOC_ES_SLIM)
        escore_priv.slim_dai_ops.digital_mute = es755_digital_mute;
 #endif
+       escore_priv.hs_delay = DEFAULT_HS_REDETECTION_DELAY;
 
        /* API Interrupt registration */
        if (pdata->gpioa_gpio != -1) {

diff --git a/sound/soc/codecs/audience/es755.h b/sound/soc/codecs/audience/es755.h
old mode 100644 (file)
new mode 100755 (executable)
index 2a507e9..b0bc3be
--- a/sound/soc/codecs/audience/es755.h
+++ b/sound/soc/codecs/audience/es755.h
@@ -135,6 +135,10 @@
 #define PORT_B_TO_D    0x01DD
 #define PORT_C_TO_D    0x01EE
 
+/* Minimum delay for redetecting the HS IN ms*/
+#define MIN_HS_REDETECTION_DELAY 50
+#define DEFAULT_HS_REDETECTION_DELAY 250
+
 union es755_accdet_status_reg {
        u16 value;
        struct {
@@ -277,6 +281,7 @@ enum {
        ES_FE_STREAMING,
        ES_FEIN2_MUX,
        ES_API_ADDR_MAX,
+       ES_HS_DELAY,
 };
 
 #define ES_SLIM_1_PB_MAX_CHANS 2

diff --git a/sound/soc/codecs/audience/escore.h b/sound/soc/codecs/audience/escore.h
old mode 100644 (file)
new mode 100755 (executable)
index c24eda6..d335de0
--- a/sound/soc/codecs/audience/escore.h
+++ b/sound/soc/codecs/audience/escore.h
@@ -598,6 +598,7 @@ struct escore_priv {
        bool i2c_pull_up;
 #endif
        bool codec_clk_en;
+       u16 hs_delay;
 };
 
 #define escore_resp(obj) ((obj)->bus.last_response)