ASoC: cs47l24: Add support for audio trace firmware

cs47l24 supports the audio trace firmware, this streams of audio to be
captured from the CODEC over a compressed audio channel for
analysis/debugging of audio processing firmwares.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 35 insertions, 3 deletions

diff --git a/sound/soc/codecs/cs47l24.c b/sound/soc/codecs/cs47l24.c
index 383700a178c7..6b8b5571d3cc 100644
--- a/sound/soc/codecs/cs47l24.c
+++ b/sound/soc/codecs/cs47l24.c
@@ -807,6 +807,9 @@ static const struct snd_soc_dapm_route cs47l24_dapm_routes[] = {
         { "IN2L PGA", NULL, "IN2L" },
         { "IN2R PGA", NULL, "IN2R" },
 
+        { "Audio Trace DSP", NULL, "DSP2" },
+        { "Audio Trace DSP", NULL, "SYSCLK" },
+
         ARIZONA_MIXER_ROUTES("OUT1L", "HPOUT1L"),
         ARIZONA_MIXER_ROUTES("OUT1R", "HPOUT1R"),
 
@@ -1016,6 +1019,27 @@ static struct snd_soc_dai_driver cs47l24_dai[] = {
                         .formats = CS47L24_FORMATS,
                 },
         },
+        {
+                .name = "cs47l24-cpu-trace",
+                .capture = {
+                        .stream_name = "Audio Trace CPU",
+                        .channels_min = 1,
+                        .channels_max = 6,
+                        .rates = CS47L24_RATES,
+                        .formats = CS47L24_FORMATS,
+                },
+                .compress_new = snd_soc_new_compress,
+        },
+        {
+                .name = "cs47l24-dsp-trace",
+                .capture = {
+                        .stream_name = "Audio Trace DSP",
+                        .channels_min = 1,
+                        .channels_max = 6,
+                        .rates = CS47L24_RATES,
+                        .formats = CS47L24_FORMATS,
+                },
+        },
 };
 
 static int cs47l24_open(struct snd_compr_stream *stream)
@@ -1027,6 +1051,8 @@ static int cs47l24_open(struct snd_compr_stream *stream)
 
         if (strcmp(rtd->codec_dai->name, "cs47l24-dsp-voicectrl") == 0) {
                 n_adsp = 2;
+        } else if (strcmp(rtd->codec_dai->name, "cs47l24-dsp-trace") == 0) {
+                n_adsp = 1;
         } else {
                 dev_err(arizona->dev,
                         "No suitable compressed stream for DAI '%s'\n",
@@ -1041,10 +1067,16 @@ static irqreturn_t cs47l24_adsp2_irq(int irq, void *data)
 {
         struct cs47l24_priv *priv = data;
         struct arizona *arizona = priv->core.arizona;
-        int ret;
+        int serviced = 0;
+        int i, ret;
+
+        for (i = 1; i <= 2; ++i) {
+                ret = wm_adsp_compr_handle_irq(&priv->core.adsp[i]);
+                if (ret != -ENODEV)
+                        serviced++;
+        }
 
-        ret = wm_adsp_compr_handle_irq(&priv->core.adsp[2]);
-        if (ret == -ENODEV) {
+        if (!serviced) {
                 dev_err(arizona->dev, "Spurious compressed data IRQ\n");
                 return IRQ_NONE;
         }