ASoC: Add additional WM hubs DC servo trace

Log the values we're getting back from the DC servo and the values we
write to it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 4 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c
index defdbd08e135..8ad43bb32eb0 100644
--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -127,6 +127,8 @@ static void calibrate_dc_servo(struct snd_soc_codec *codec)
                         break;
                 }
 
+                dev_dbg(codec->dev, "DCS input: %x %x\n", reg_l, reg_r);
+
                 /* HPOUT1L */
                 if (reg_l + hubs->dcs_codes > 0 &&
                     reg_l + hubs->dcs_codes < 0xff)
@@ -139,6 +141,8 @@ static void calibrate_dc_servo(struct snd_soc_codec *codec)
                         reg_r += hubs->dcs_codes;
                 dcs_cfg |= reg_r;
 
+                dev_dbg(codec->dev, "DCS result: %x\n", dcs_cfg);
+
                 /* Do it */
                 snd_soc_write(codec, WM8993_DC_SERVO_3, dcs_cfg);
                 wait_for_dc_servo(codec,