[alsa-devel] [PATCH v2 1/8] ASoC: wm5110: Provide basic hookup for voice control

[Charles Keepax]

Register a platform driver for the CODEC and add DAIs that will be used
to connect a compressed record path for the voice control functionality.

Signed-off-by: Charles Keepax <ckeepax at opensource.wolfsonmicro.com>
---
 sound/soc/codecs/Kconfig   |  1 +
 sound/soc/codecs/arizona.h |  2 +-
 sound/soc/codecs/wm5110.c  | 46 +++++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index c971371..57499ea 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -220,6 +220,7 @@ config SND_SOC_WM_HUBS
 
 config SND_SOC_WM_ADSP
 	tristate
+	select SND_SOC_COMPRESS
 	default y if SND_SOC_CS47L24=y
 	default y if SND_SOC_WM5102=y
 	default y if SND_SOC_WM5110=y
diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h
index b4f1867..8b6adb5 100644
--- a/sound/soc/codecs/arizona.h
+++ b/sound/soc/codecs/arizona.h
@@ -57,7 +57,7 @@
 #define ARIZONA_CLK_98MHZ  5
 #define ARIZONA_CLK_147MHZ 6
 
-#define ARIZONA_MAX_DAI  6
+#define ARIZONA_MAX_DAI  8
 #define ARIZONA_MAX_ADSP 4
 
 #define ARIZONA_DVFS_SR1_RQ	0x001
diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c
index e93e542..67d5651 100644
--- a/sound/soc/codecs/wm5110.c
+++ b/sound/soc/codecs/wm5110.c
@@ -1810,6 +1810,9 @@ static const struct snd_soc_dapm_route wm5110_dapm_routes[] = {
 	{ "Slim2 Capture", NULL, "SYSCLK" },
 	{ "Slim3 Capture", NULL, "SYSCLK" },
 
+	{ "Voice Control DSP", NULL, "DSP3" },
+	{ "Voice Control DSP", NULL, "SYSCLK" },
+
 	{ "IN1L PGA", NULL, "IN1L" },
 	{ "IN1R PGA", NULL, "IN1R" },
 
@@ -2132,6 +2135,27 @@ static struct snd_soc_dai_driver wm5110_dai[] = {
 		 },
 		.ops = &arizona_simple_dai_ops,
 	},
+	{
+		.name = "wm5110-cpu-voicectrl",
+		.capture = {
+			.stream_name = "Voice Control CPU",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = WM5110_RATES,
+			.formats = WM5110_FORMATS,
+		},
+		.compress_new = snd_soc_new_compress,
+	},
+	{
+		.name = "wm5110-dsp-voicectrl",
+		.capture = {
+			.stream_name = "Voice Control DSP",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = WM5110_RATES,
+			.formats = WM5110_FORMATS,
+		},
+	},
 };
 
 static int wm5110_codec_probe(struct snd_soc_codec *codec)
@@ -2224,6 +2248,13 @@ static struct snd_soc_codec_driver soc_codec_dev_wm5110 = {
 	.num_dapm_routes = ARRAY_SIZE(wm5110_dapm_routes),
 };
 
+static struct snd_compr_ops wm5110_compr_ops = {
+};
+
+static struct snd_soc_platform_driver wm5110_compr_platform = {
+	.compr_ops = &wm5110_compr_ops,
+};
+
 static int wm5110_probe(struct platform_device *pdev)
 {
 	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
@@ -2284,8 +2315,21 @@ static int wm5110_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_idle(&pdev->dev);
 
-	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wm5110,
+	ret = snd_soc_register_platform(&pdev->dev, &wm5110_compr_platform);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to register platform: %d\n", ret);
+		goto error;
+	}
+
+	ret = snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wm5110,
 				      wm5110_dai, ARRAY_SIZE(wm5110_dai));
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to register codec: %d\n", ret);
+		snd_soc_unregister_platform(&pdev->dev);
+	}
+
+error:
+	return ret;
 }
 
 static int wm5110_remove(struct platform_device *pdev)
-- 
2.1.4