diff mbox series

[v10,6/8] drivers: thermal: tsens: Use get_temp_common for msm8960

Message ID 20210217194011.22649-7-ansuelsmth@gmail.com (mailing list archive)
State New
Delegated to: Daniel Lezcano
Headers show
Series Add support for ipq8064 tsens | expand

Commit Message

Ansuel Smith Feb. 17, 2021, 7:40 p.m. UTC
Rework calibrate function to use common function. Derive the offset from
a missing hardcoded slope table and the data from the nvmem calib
efuses.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
 drivers/thermal/qcom/tsens-8960.c | 56 +++++++++----------------------
 1 file changed, 15 insertions(+), 41 deletions(-)

Comments

Thara Gopinath March 18, 2021, 9:15 p.m. UTC | #1
On 2/17/21 2:40 PM, Ansuel Smith wrote:
> Rework calibrate function to use common function. Derive the offset from
> a missing hardcoded slope table and the data from the nvmem calib
> efuses.

You are also changing get_temp to use get_temp_common instead of 
get_temp_8960 in this patch. Please add it to commit description as 
well.I will also consider changing the subject header to something more 
generic like
	"drivers: thermal: tsens: Replace custom 8960 apis with generic apis"
or anything better.

Otherwise,
Acked-by: Thara Gopinath <thara.gopinath@linaro.org>

Warm Regards
Thara

> 
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> ---
>   drivers/thermal/qcom/tsens-8960.c | 56 +++++++++----------------------
>   1 file changed, 15 insertions(+), 41 deletions(-)
> 
> diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c
> index 248aaa65b5b0..43ebe4d54672 100644
> --- a/drivers/thermal/qcom/tsens-8960.c
> +++ b/drivers/thermal/qcom/tsens-8960.c
> @@ -67,6 +67,13 @@
>   #define S9_STATUS_OFF		0x3674
>   #define S10_STATUS_OFF		0x3678
>   
> +/* Original slope - 200 to compensate mC to C inaccuracy */
> +u32 tsens_msm8960_slope[] = {
> +			976, 976, 954, 976,
> +			911, 932, 932, 999,
> +			932, 999, 932
> +			};
> +
>   static int suspend_8960(struct tsens_priv *priv)
>   {
>   	int ret;
> @@ -192,9 +199,7 @@ static int calibrate_8960(struct tsens_priv *priv)
>   {
>   	int i;
>   	char *data;
> -
> -	ssize_t num_read = priv->num_sensors;
> -	struct tsens_sensor *s = priv->sensor;
> +	u32 p1[11];
>   
>   	data = qfprom_read(priv->dev, "calib");
>   	if (IS_ERR(data))
> @@ -202,49 +207,18 @@ static int calibrate_8960(struct tsens_priv *priv)
>   	if (IS_ERR(data))
>   		return PTR_ERR(data);
>   
> -	for (i = 0; i < num_read; i++, s++)
> -		s->offset = data[i];
> +	for (i = 0; i < priv->num_sensors; i++) {
> +		p1[i] = data[i];
> +		priv->sensor[i].slope = tsens_msm8960_slope[i];
> +	}
> +
> +	compute_intercept_slope(priv, p1, NULL, ONE_PT_CALIB);
>   
>   	kfree(data);
>   
>   	return 0;
>   }
>   
> -/* Temperature on y axis and ADC-code on x-axis */
> -static inline int code_to_mdegC(u32 adc_code, const struct tsens_sensor *s)
> -{
> -	int slope, offset;
> -
> -	slope = thermal_zone_get_slope(s->tzd);
> -	offset = CAL_MDEGC - slope * s->offset;
> -
> -	return adc_code * slope + offset;
> -}
> -
> -static int get_temp_8960(const struct tsens_sensor *s, int *temp)
> -{
> -	int ret;
> -	u32 code, trdy;
> -	struct tsens_priv *priv = s->priv;
> -	unsigned long timeout;
> -
> -	timeout = jiffies + usecs_to_jiffies(TIMEOUT_US);
> -	do {
> -		ret = regmap_read(priv->tm_map, INT_STATUS_ADDR, &trdy);
> -		if (ret)
> -			return ret;
> -		if (!(trdy & TRDY_MASK))
> -			continue;
> -		ret = regmap_read(priv->tm_map, s->status, &code);
> -		if (ret)
> -			return ret;
> -		*temp = code_to_mdegC(code, s);
> -		return 0;
> -	} while (time_before(jiffies, timeout));
> -
> -	return -ETIMEDOUT;
> -}
> -
>   static struct tsens_features tsens_8960_feat = {
>   	.ver_major	= VER_0,
>   	.crit_int	= 0,
> @@ -313,7 +287,7 @@ static const struct reg_field tsens_8960_regfields[MAX_REGFIELDS] = {
>   static const struct tsens_ops ops_8960 = {
>   	.init		= init_common,
>   	.calibrate	= calibrate_8960,
> -	.get_temp	= get_temp_8960,
> +	.get_temp	= get_temp_common,
>   	.enable		= enable_8960,
>   	.disable	= disable_8960,
>   	.suspend	= suspend_8960,
>
diff mbox series

Patch

diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c
index 248aaa65b5b0..43ebe4d54672 100644
--- a/drivers/thermal/qcom/tsens-8960.c
+++ b/drivers/thermal/qcom/tsens-8960.c
@@ -67,6 +67,13 @@ 
 #define S9_STATUS_OFF		0x3674
 #define S10_STATUS_OFF		0x3678
 
+/* Original slope - 200 to compensate mC to C inaccuracy */
+u32 tsens_msm8960_slope[] = {
+			976, 976, 954, 976,
+			911, 932, 932, 999,
+			932, 999, 932
+			};
+
 static int suspend_8960(struct tsens_priv *priv)
 {
 	int ret;
@@ -192,9 +199,7 @@  static int calibrate_8960(struct tsens_priv *priv)
 {
 	int i;
 	char *data;
-
-	ssize_t num_read = priv->num_sensors;
-	struct tsens_sensor *s = priv->sensor;
+	u32 p1[11];
 
 	data = qfprom_read(priv->dev, "calib");
 	if (IS_ERR(data))
@@ -202,49 +207,18 @@  static int calibrate_8960(struct tsens_priv *priv)
 	if (IS_ERR(data))
 		return PTR_ERR(data);
 
-	for (i = 0; i < num_read; i++, s++)
-		s->offset = data[i];
+	for (i = 0; i < priv->num_sensors; i++) {
+		p1[i] = data[i];
+		priv->sensor[i].slope = tsens_msm8960_slope[i];
+	}
+
+	compute_intercept_slope(priv, p1, NULL, ONE_PT_CALIB);
 
 	kfree(data);
 
 	return 0;
 }
 
-/* Temperature on y axis and ADC-code on x-axis */
-static inline int code_to_mdegC(u32 adc_code, const struct tsens_sensor *s)
-{
-	int slope, offset;
-
-	slope = thermal_zone_get_slope(s->tzd);
-	offset = CAL_MDEGC - slope * s->offset;
-
-	return adc_code * slope + offset;
-}
-
-static int get_temp_8960(const struct tsens_sensor *s, int *temp)
-{
-	int ret;
-	u32 code, trdy;
-	struct tsens_priv *priv = s->priv;
-	unsigned long timeout;
-
-	timeout = jiffies + usecs_to_jiffies(TIMEOUT_US);
-	do {
-		ret = regmap_read(priv->tm_map, INT_STATUS_ADDR, &trdy);
-		if (ret)
-			return ret;
-		if (!(trdy & TRDY_MASK))
-			continue;
-		ret = regmap_read(priv->tm_map, s->status, &code);
-		if (ret)
-			return ret;
-		*temp = code_to_mdegC(code, s);
-		return 0;
-	} while (time_before(jiffies, timeout));
-
-	return -ETIMEDOUT;
-}
-
 static struct tsens_features tsens_8960_feat = {
 	.ver_major	= VER_0,
 	.crit_int	= 0,
@@ -313,7 +287,7 @@  static const struct reg_field tsens_8960_regfields[MAX_REGFIELDS] = {
 static const struct tsens_ops ops_8960 = {
 	.init		= init_common,
 	.calibrate	= calibrate_8960,
-	.get_temp	= get_temp_8960,
+	.get_temp	= get_temp_common,
 	.enable		= enable_8960,
 	.disable	= disable_8960,
 	.suspend	= suspend_8960,