Hi!

During voice call, I need audio components to be active "as if" aplay or arecord was running, because modem needs to comunicate with speaker and microphone.

I hacked something up, but... I believe I'll need help here. Look at "enable_call" for "interesting" stuff I had to do.

...and also. What is right interface for this? Mixer component that says if voice call is active or not?

Any ideas?

Thanks, Pavel

(edited). +++ b/sound/soc/codecs/cpcap.c @@ -330,6 +330,10 @@ static const char * const cpcap_in_left_mux_texts[] = { "Off", "Mic 2", "Ext Left" };

+static const char * const cpcap_mode_texts[] = { + "Normal", "Handsfree", "Call", +}; + /* * input muxes use unusual register layout, so that we need to use custom * getter/setter methods @@ -354,6 +358,8 @@ static SOC_ENUM_SINGLE_DECL(cpcap_hs_l_mux_enum, 0, 6, cpcap_out_mux_texts); static SOC_ENUM_SINGLE_DECL(cpcap_emu_l_mux_enum, 0, 7, cpcap_out_mux_texts); static SOC_ENUM_SINGLE_DECL(cpcap_emu_r_mux_enum, 0, 8, cpcap_out_mux_texts);

+static SOC_ENUM_SINGLE_DECL(cpcap_mode_enum, 0, 9, cpcap_mode_texts); + static int cpcap_output_mux_get_enum(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { @@ -442,6 +448,211 @@ static int cpcap_output_mux_put_enum(struct snd_kcontrol *kcontrol, return 0; }

+static int mode; + +static int cpcap_mode_get_enum(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.enumerated.item[0] = mode; + + return 0; +} + +static struct snd_soc_dai *voice_codec_dai_hack; + +static int enable_call(struct snd_soc_component *component, int on) +{ + struct cpcap_audio *cpcap = snd_soc_component_get_drvdata(component);

+ struct snd_soc_pcm_runtime *rt; + + rt = snd_soc_get_pcm_runtime(component->card, "40126000.mcbsp-cpcap-voice"); + printk("num_dai: %d, got runtime %lx\n", component->num_dai, rt); + + if (rt) { + snd_soc_dapm_stream_event(rt, SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_START); + snd_soc_dapm_stream_event(rt, SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_START); + } + + cpcap_set_sysclk(cpcap, CPCAP_DAI_VOICE, 1, 19200000); + cpcap_set_samprate(cpcap, CPCAP_DAI_VOICE, 8000); + + cpcap_voice_set_dai_fmt(voice_codec_dai_hack, + SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM ); + + return 0; +} + +static int cpcap_mode_put_enum(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_dapm_kcontrol_component(kcontrol); + struct cpcap_audio *cpcap = snd_soc_component_get_drvdata(component); + unsigned int muxval = ucontrol->value.enumerated.item[0]; + + printk("Requested mode %d\n", muxval); + + mode = muxval; + + switch (muxval) { + case 1: + enable_call(component, 1); + break; + case 2: + enable_call(component, 1); + + regmap_assert(cpcap, CPCAP_REG_TXI, 0xffff, 0x0cc6); ... + break; + + default: + break; + } + + return 0; +} + static int cpcap_input_right_mux_get_enum(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { @@ -630,6 +841,10 @@ static const struct snd_kcontrol_new cpcap_earpiece_mux = SOC_DAPM_ENUM_EXT("Earpiece", cpcap_earpiece_mux_enum, cpcap_output_mux_get_enum, cpcap_output_mux_put_enum);

+static const struct snd_kcontrol_new cpcap_mode = + SOC_DAPM_ENUM_EXT("Mode", cpcap_mode_enum, + cpcap_mode_get_enum, cpcap_mode_put_enum); + static const struct snd_kcontrol_new cpcap_hifi_mono_mixer_controls[] = { SOC_DAPM_SINGLE("HiFi Mono Playback Switch", CPCAP_REG_RXSDOA, CPCAP_BIT_MONO_DAC1, 1, 0), @@ -771,6 +986,9 @@ static const struct snd_soc_dapm_widget cpcap_dapm_widgets[] = { SND_SOC_DAPM_MUX("EMU Left Playback Route", SND_SOC_NOPM, 0, 0, &cpcap_emu_left_mux),

+ SND_SOC_DAPM_MUX("Mode", SND_SOC_NOPM, 0, 0, + &cpcap_mode), + /* Output Amplifier */ SND_SOC_DAPM_PGA("Earpiece PGA", CPCAP_REG_RXOA, CPCAP_BIT_A1_EAR_EN, 0, NULL, 0), @@ -791,7 +1009,7 @@ static const struct snd_soc_dapm_widget cpcap_dapm_widgets[] = { SND_SOC_DAPM_PGA("EMU Left PGA", CPCAP_REG_RXOA, CPCAP_BIT_EMU_SPKR_L_EN, 0, NULL, 0),

- /* Headet Charge Pump */ + /* Headset Charge Pump */ SND_SOC_DAPM_SUPPLY("Headset Charge Pump", CPCAP_REG_RXOA, CPCAP_BIT_ST_HS_CP_EN, 0, NULL, 0),

@@ -1304,6 +1525,7 @@ static int cpcap_voice_set_dai_fmt(struct snd_soc_dai *codec_dai, u16 val = 0x0000; int err;

+ voice_codec_dai_hack = codec_dai; dev_dbg(component->dev, "Voice setup dai format (%08x)", fmt);

/* @@ -1343,10 +1565,7 @@ static int cpcap_voice_set_dai_fmt(struct snd_soc_dai *codec_dai, break; }

- if (val & BIT(CPCAP_BIT_CLK_INV)) - val &= ~BIT(CPCAP_BIT_CLK_INV); - else - val |= BIT(CPCAP_BIT_CLK_INV); + val ^= BIT(CPCAP_BIT_CLK_INV);

switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: