HW manual changes temperature calculation formula for E3:
- When CTEMP is less than 24
T = CTEMP[5:0] * 5.5 - 72
- When CTEMP is equal to/greater than 24
T = CTEMP[5:0] * 5 - 60
This was inspired by a patch in the BSP by Van Do <van.do.xw@xxxxxxxxxxx>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx>
---
This patch is based on the master branch of Linus Torvalds's linux tree.
drivers/thermal/rcar_thermal.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 97462e9..11df0cc 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -52,6 +52,7 @@ struct rcar_thermal_chip {
unsigned int irq_per_ch : 1;
unsigned int needs_suspend_resume : 1;
unsigned int nirqs;
+ unsigned int ctemp_bands;
};
static const struct rcar_thermal_chip rcar_thermal = {
@@ -60,6 +61,7 @@ struct rcar_thermal_chip {
.irq_per_ch = 0,
.needs_suspend_resume = 0,
.nirqs = 1,
+ .ctemp_bands = 1,
};
static const struct rcar_thermal_chip rcar_gen2_thermal = {
@@ -68,6 +70,7 @@ struct rcar_thermal_chip {
.irq_per_ch = 0,
.needs_suspend_resume = 0,
.nirqs = 1,
+ .ctemp_bands = 1,
};
static const struct rcar_thermal_chip rcar_gen3_thermal = {
@@ -80,6 +83,7 @@ struct rcar_thermal_chip {
* interrupts to detect a temperature change, rise or fall.
*/
.nirqs = 2,
+ .ctemp_bands = 2,
};
struct rcar_thermal_priv {
@@ -263,7 +267,12 @@ static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv,
return ret;
mutex_lock(&priv->lock);
- tmp = MCELSIUS((priv->ctemp * 5) - 65);
+ if (priv->chip->ctemp_bands == 1)
+ tmp = MCELSIUS((priv->ctemp * 5) - 65);
+ else if (priv->ctemp < 24)
+ tmp = MCELSIUS(((priv->ctemp * 55) - 720) / 10);
+ else
+ tmp = MCELSIUS((priv->ctemp * 5) - 60);
mutex_unlock(&priv->lock);
if ((tmp < MCELSIUS(-45)) || (tmp > MCELSIUS(125))) {
--
1.9.1
