linux-kernel - omap4-droid4: voice call support was Re: [PATCHv5,5/5] ARM: dts: omap4-droid4: add soundcard

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Date:   Mon, 26 Mar 2018 16:16:38 +0200
From:   Pavel Machek <pavel@....cz>
To:     Sebastian Reichel <sebastian.reichel@...labora.co.uk>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Tony Lindgren <tony@...mide.com>,
        Lee Jones <lee.jones@...aro.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: omap4-droid4: voice call support was Re: [PATCHv5,5/5] ARM: dts:
 omap4-droid4: add soundcard

Hi!

Do you have any ideas what needs to be done for voice calls support? I
can talk to the modem and start a call.

Then something like this (untested!) is certainly needed. Probably
more...

Thanks,
									Pavel

diff --git a/sound/soc/codecs/cpcap.c b/sound/soc/codecs/cpcap.c
index aedb267..7646f68 100644
--- a/sound/soc/codecs/cpcap.c
+++ b/sound/soc/codecs/cpcap.c
@@ -1280,6 +1280,60 @@ static int cpcap_voice_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
+static int cpcap_incall_hw_params(struct snd_pcm_substream *substream,
+				 struct snd_pcm_hw_params *params,
+				 struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct device *dev = codec->dev;
+	struct cpcap_audio *cpcap = snd_soc_codec_get_drvdata(codec);
+	static const u16 reg_cdi = CPCAP_REG_CDI;
+	int rate = params_rate(params);
+	int channels = params_channels(params);
+	int direction = substream->stream;
+	u16 val, mask;
+	int err;
+
+	dev_dbg(dev, "Incall setup HW params: rate=%d, direction=%d, chan=%d",
+		rate, direction, channels);
+
+	/* codec, 1 in original code is CPCAP_REG_CC
+	   codec, 2 is CPCAP_REG_CDI
+	   codec, 5 is CPCAP_REG_TXI */
+
+	if (/* cpcap->codec_strm_cnt == */ 1) {
+		/*
+		if (pdata->voice_type != VOICE_TYPE_QC)
+			printk("FIXME: Only MDM6600 support is implemented here.\n");
+		*/
+
+		err = regmap_update_bits(cpcap->regmap, CPCAP_REG_CDI, 0xffff, 0xAE02);
+		if (err) printk("cpcap error %d\n", __LINE__);
+
+		err = regmap_update_bits(cpcap->regmap, CPCAP_REG_CC, 0xffff, 0x6120);
+		if (err) printk("cpcap error %d\n", __LINE__);
+
+		err = cpcap_set_samprate(cpcap, CPCAP_DAI_VOICE, rate);
+		printk("Configured stream\n");
+	}
+
+	/* (direction == SNDRV_PCM_STREAM_CAPTURE) ?? */
+	if (substream->stream) { /* up link */
+		unsigned int set =  CPCAP_BIT_AUDIHPF_1 | CPCAP_BIT_AUDIHPF_0;
+		err = regmap_update_bits(cpcap->regmap, CPCAP_REG_CC, set, set);
+		if (err) printk("cpcap error %d\n", __LINE__);
+
+		set = CPCAP_BIT_MB_ON1L | CPCAP_BIT_MB_ON1R;
+		err = regmap_update_bits(cpcap->regmap, CPCAP_REG_TXI, set, set);
+	} else { /* down link */
+		unsigned int set =  CPCAP_BIT_AUDOHPF_1 | CPCAP_BIT_AUDOHPF_0;
+		err = regmap_update_bits(cpcap->regmap, CPCAP_REG_CC, set, set);
+		if (err) printk("cpcap error %d\n", __LINE__);
+	}
+
+	return err;
+}
+
 static int cpcap_voice_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id,
 				      unsigned int freq, int dir)
 {
@@ -1394,6 +1448,14 @@ static const struct snd_soc_dai_ops cpcap_dai_voice_ops = {
 	.digital_mute	= cpcap_voice_set_mute,
 };
 
+static const struct snd_soc_dai_ops cpcap_dai_incall_ops = {
+	/* FIXME */
+	.hw_params	= cpcap_incall_hw_params,
+	.set_sysclk	= cpcap_voice_set_dai_sysclk,
+	.set_fmt	= cpcap_voice_set_dai_fmt,
+	.digital_mute	= cpcap_voice_set_mute,
+};
+
 static struct snd_soc_dai_driver cpcap_dai[] = {
 {
 	.id = 0,
@@ -1426,6 +1488,26 @@ static struct snd_soc_dai_driver cpcap_dai[] = {
 	},
 	.ops = &cpcap_dai_voice_ops,
 },
+{
+	.id = 2,
+	.name = "cpcap in-call",
+	.playback = {
+		.stream_name = "InCall DL",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+	.ops = &cpcap_dai_incall_ops,
+},
+/* FIXME: this misses bt-call, cpcap bt, BPvoice, FM */
 };
 
 static int cpcap_dai_mux(struct cpcap_audio *cpcap, bool swap_dai_configuration)






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

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