call/normal switch was Re: omap4-droid4: voice call support was

From: Pavel Machek
Date: Sat Mar 31 2018 - 10:56:18 EST

Hi!

> Hmm well I got audio call hacked to work as a proof of concept hack,
> see below. Maybe it can be used to verify some of the assumptions
> above.
>
> Then.. To split the work a bit, can you guys maybe try to decode
> the cpcap register values and try to do a proper ASoC driver patch?

This is not proper patch yet, but it should be a step in that
direction...

If someone knows how to express cleanly "active support for modem is
the same as active audio playback", let me know....

Best regards,
Pavel

diff --git a/sound/soc/codecs/cpcap.c b/sound/soc/codecs/cpcap.c
index 3b53bd0..7aaa4db 100644
--- a/sound/soc/codecs/cpcap.c
+++ b/sound/soc/codecs/cpcap.c
@@ -221,18 +221,18 @@ struct cpcap_reg_info {
};

static const struct cpcap_reg_info cpcap_default_regs[] = {
- { CPCAP_REG_CC, 0xFFFF, 0x0000 },
- { CPCAP_REG_CC, 0xFFFF, 0x0000 },
- { CPCAP_REG_CDI, 0xBFFF, 0x0000 },
+ { CPCAP_REG_CC, 0xFFFF, 0x60cf },
+ { CPCAP_REG_CDI, 0xBFFF, 0xae0a },
{ CPCAP_REG_SDAC, 0x0FFF, 0x0000 },
{ CPCAP_REG_SDACDI, 0x3FFF, 0x0000 },
- { CPCAP_REG_TXI, 0x0FDF, 0x0000 },
- { CPCAP_REG_TXMP, 0x0FFF, 0x0400 },
- { CPCAP_REG_RXOA, 0x01FF, 0x0000 },
- { CPCAP_REG_RXVC, 0xFF3C, 0x0000 },
- { CPCAP_REG_RXCOA, 0x07FF, 0x0000 },
- { CPCAP_REG_RXSDOA, 0x1FFF, 0x0000 },
+ { CPCAP_REG_TXI, 0x0FFF, 0x0CC0 },
+ { CPCAP_REG_TXMP, 0x0FFF, 0x0610 },
+ { CPCAP_REG_RXOA, 0x01FF, 0x0006 },
+ { CPCAP_REG_RXVC, 0xFF3C, 0x0B2C },
+ { CPCAP_REG_RXCOA, 0x07FF, 0x0606 },
+ { CPCAP_REG_RXSDOA, 0x1FFF, 0x0600 },
{ CPCAP_REG_RXEPOA, 0x7FFF, 0x0000 },
+ { CPCAP_REG_VAUDIOC, 0xFFFF, 0x0025 },
{ CPCAP_REG_A2LA, BIT(CPCAP_BIT_A2_FREE_RUN),
BIT(CPCAP_BIT_A2_FREE_RUN) },
};
@@ -330,6 +330,11 @@ static const char * const cpcap_in_left_mux_texts[] = {
"Off", "Mic 2", "Ext Left"
};

+static const char * const cpcap_mode_texts[] = {
+ "Normal", "Call"
+};
+
+
/*
* input muxes use unusual register layout, so that we need to use custom
* getter/setter methods
@@ -354,6 +359,8 @@ 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 +449,86 @@ 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)
+{
+ struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
+ struct cpcap_audio *cpcap = snd_soc_codec_get_drvdata(codec);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ int err;
+
+ ucontrol->value.enumerated.item[0] = mode;
+
+ return 0;
+}
+
+static int cpcap_mode_put_enum(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
+ struct cpcap_audio *cpcap = snd_soc_codec_get_drvdata(codec);
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_dapm_kcontrol_dapm(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int muxval = ucontrol->value.enumerated.item[0];
+ unsigned int mask = BIT(e->shift_l);
+ int err;
+
+ printk("Requested mode %d\n", muxval);
+
+ mode = muxval;
+
+ switch (muxval) {
+ case 1:
+
+ err = regmap_update_bits(cpcap->regmap, CPCAP_REG_VAUDIOC,
+ 0xffff, 0x0025); // OK
+ if (err)
+ goto out;
+ err = regmap_update_bits(cpcap->regmap, CPCAP_REG_CC,
+ 0xffff, 0x60cf); // OK
+ if (err)
+ goto out;
+ err = regmap_update_bits(cpcap->regmap, CPCAP_REG_CDI,
+ 0xffff, 0xae0a); // OK
+ if (err)
+ goto out;
+ err = regmap_update_bits(cpcap->regmap, CPCAP_REG_TXI,
+ 0xffff, 0x0cc0);
+ if (err)
+ goto out;
+
+ mask = 1 << CPCAP_BIT_PGA_CDC_EN | 0x200;
+ err = regmap_update_bits(cpcap->regmap, CPCAP_REG_RXCOA,
+ mask, mask);
+ if (err)
+ printk("error #3\n");
+
+ mask = 1 << CPCAP_BIT_A2_LDSP_L_EN | 1 << CPCAP_BIT_A2_LDSP_R_EN;
+ err = regmap_update_bits(cpcap->regmap, CPCAP_REG_RXOA,
+ mask, mask);
+ if (err)
+ printk("error #2\n");
+
+ err = regmap_update_bits(cpcap->regmap, 0x814,
+ 0x0400, 0x0400);
+ if (err)
+ printk("error #1\n");
+
+ default:
+ break;
+ }
+
+ // FIXME
+// snd_soc_dapm_mux_update_power(dapm, kcontrol, muxval, e, NULL);
+
+ return 0;
+out: printk("Something failed\n");
+ return -EINVAL;
+}
+
static int cpcap_input_right_mux_get_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
@@ -630,6 +717,11 @@ 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 +863,10 @@ 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),
@@ -816,6 +912,9 @@ static const struct snd_soc_dapm_route intercon[] = {
{"Microphone 1 PGA", NULL, "VAUDIO"},
{"Microphone 2 PGA", NULL, "VAUDIO"},

+ /* FIXME */
+ {"Mode", NULL, "Voice TX"},
+
/* Stream -> AIF */
{"HiFi RX", NULL, "HiFi Playback"},
{"Voice RX", NULL, "Voice Playback"},



--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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