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drivers: thermal: tsens: Add new operation to check if a sensor is enabled 

is_sensor_enabled() checks if the sensors are enabled on this platform.
It is possible that the SoC might choose not to enable all the sensors
that the IP block is capable of supporting.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Amit Kucheria 2019-03-20 18:47:53 +05:30 committed by Eduardo Valentin
parent fc7d18cf6a
commit 3e6a8fb330
5 changed files with 22 additions and 0 deletions
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14
drivers/thermal/qcom/tsens-common.c
View File

@ -69,6 +69,20 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *p1,
}
}
bool is_sensor_enabled(struct tsens_priv *priv, u32 hw_id)
{
u32 val;
int ret;
if ((hw_id > (priv->num_sensors - 1)) || (hw_id < 0))
return -EINVAL;
ret = regmap_field_read(priv->rf[SENSOR_EN], &val);
if (ret)
return ret;
return val & (1 << hw_id);
}
static inline int code_to_degc(u32 adc_code, const struct tsens_sensor *s)
{
int degc, num, den;

1
drivers/thermal/qcom/tsens-v0_1.c
View File

@ -333,6 +333,7 @@ static const struct reg_field tsens_v0_1_regfields[MAX_REGFIELDS] = {
/* CTRL_OFFSET */
[TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0),
[TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1),
[SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 13),
/* ----- TM ------ */
/* INTERRUPT ENABLE */

1
drivers/thermal/qcom/tsens-v2.c
View File

@ -99,6 +99,7 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
/* CTRL_OFF */
[TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0),
[TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1),
[SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 18),
/* ----- TM ------ */
/* INTERRUPT ENABLE */

5
drivers/thermal/qcom/tsens.c
View File

@ -82,6 +82,11 @@ static int tsens_register(struct tsens_priv *priv)
struct thermal_zone_device *tzd;
for (i = 0; i < priv->num_sensors; i++) {
if (!is_sensor_enabled(priv, priv->sensor[i].hw_id)) {
dev_err(priv->dev, "sensor %d: disabled\n",
priv->sensor[i].hw_id);
continue;
}
priv->sensor[i].priv = priv;
priv->sensor[i].id = i;
tzd = devm_thermal_zone_of_sensor_register(priv->dev, i,

1
drivers/thermal/qcom/tsens.h
View File

@ -307,6 +307,7 @@ char *qfprom_read(struct device *dev, const char *cname);
void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mode);
int init_common(struct tsens_priv *priv);
int get_temp_common(struct tsens_priv *priv, int i, int *temp);
bool is_sensor_enabled(struct tsens_priv *priv, u32 hw_id);
/* TSENS target */
extern const struct tsens_plat_data data_8960;