ASoC: codecs: wsa884x: report temps to hwmon in millidegree of Celsius

Commit Message

Alexey Klimov Feb. 21, 2025, 4:40 a.m. UTC

Temperatures are reported in units of Celsius however hwmon expects
values to be in millidegree of Celsius. Userspace tools observe values
close to zero and report it as "Not available" or incorrect values like
0C or 1C. Add a simple conversion to fix that.

Before the change:

wsa884x-virtual-0
Adapter: Virtual device
temp1:         +0.0°C
--
wsa884x-virtual-0
Adapter: Virtual device
temp1:         +0.0°C

Also reported as N/A before first amplifier power on.

After this change and initial wsa884x power on:

wsa884x-virtual-0
Adapter: Virtual device
temp1:        +39.0°C
--
wsa884x-virtual-0
Adapter: Virtual device
temp1:        +37.0°C

Tested on sm8550 only.

Cc: Krzysztof Kozlowski <[e-mail]>
Cc: Srinivas Kandagatla <[e-mail]>
Signed-off-by: Alexey Klimov <[e-mail]>
---
 sound/soc/codecs/wsa884x.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/sound/soc/codecs/wsa884x.c b/sound/soc/codecs/wsa884x.c
index 86df5152c547..560a2c04b695 100644
--- a/sound/soc/codecs/wsa884x.c
+++ b/sound/soc/codecs/wsa884x.c
@@ -1875,7 +1875,7 @@  static int wsa884x_get_temp(struct wsa884x_priv *wsa884x, long *temp)
 		 * Reading temperature is possible only when Power Amplifier is
 		 * off. Report last cached data.
 		 */
-		*temp = wsa884x->temperature;
+		*temp = wsa884x->temperature * 1000;
 		return 0;
 	}
 
@@ -1934,7 +1934,7 @@  static int wsa884x_get_temp(struct wsa884x_priv *wsa884x, long *temp)
 	if ((val > WSA884X_LOW_TEMP_THRESHOLD) &&
 	    (val < WSA884X_HIGH_TEMP_THRESHOLD)) {
 		wsa884x->temperature = val;
-		*temp = val;
+		*temp = val * 1000;
 		ret = 0;
 	} else {
 		ret = -EAGAIN;