ASoC: Display the power register in DAPM widget debugfs

Make it a bit easier to tie DAPM widgets in with the register map
without referring to the source by including the register location
controlled by the widget.

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

1 files changed, 8 insertions, 1 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 0d294ef72590..846678aa3d35 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1147,9 +1147,16 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
         out = is_connected_output_ep(w);
         dapm_clear_walk(w->codec);
 
-        ret = snprintf(buf, PAGE_SIZE, "%s: %s  in %d out %d\n",
+        ret = snprintf(buf, PAGE_SIZE, "%s: %s  in %d out %d",
                        w->name, w->power ? "On" : "Off", in, out);
 
+        if (w->reg >= 0)
+                ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                " - R%d(0x%x) bit %d",
+                                w->reg, w->reg, w->shift);
+
+        ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
+
         if (w->sname)
                 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
                                 w->sname,