forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

thermal: armada: Allow to specify an 'inverted readout' sensor

Browse source 
In order to support inverted-formula thermal sensor readout, this commit
introduces an 'inverted' field in the SoC-specific structure which
allows to specify an inversion of the temperature formula.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Ezequiel Garcia 2014-05-06 13:59:49 -03:00 • committed by Zhang Rui
commit fd2c94d5a3
1 changed files with 5 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/thermal/armada_thermal.c
View file

@ -56,6 +56,7 @@ struct armada_thermal_data {
unsigned long coef_b; unsigned long coef_b;
unsigned long coef_m; unsigned long coef_m;
unsigned long coef_div; unsigned long coef_div;
bool inverted;
/* Register shift and mask to access the sensor temperature */ /* Register shift and mask to access the sensor temperature */
unsigned int temp_shift; unsigned int temp_shift;
@ -138,7 +139,10 @@ static int armada_get_temp(struct thermal_zone_device *thermal,
m = priv->data->coef_m; m = priv->data->coef_m;
div = priv->data->coef_div; div = priv->data->coef_div;
*temp = (b - (m * reg)) / div; if (priv->data->inverted)
*temp = ((m * reg) - b) / div;
else
*temp = (b - (m * reg)) / div;
return 0; return 0;
} }