diff options
| -rw-r--r-- | drivers/thermal/qcom/tsens-8960.c | 56 |
1 files changed, 15 insertions, 41 deletions
diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c index a96d37c2b674..58112f0dfe77 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 - 350 to compensate mC to C inaccuracy */ +static u32 tsens_msm8960_slope[] = { + 826, 826, 804, 826, + 761, 782, 782, 849, + 782, 849, 782 + }; + static int suspend_8960(struct tsens_priv *priv) { int ret; @@ -194,9 +201,7 @@ 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)) @@ -204,49 +209,18 @@ 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 const struct reg_field tsens_8960_regfields[MAX_REGFIELDS] = { /* ----- SROT ------ */ /* No VERSION information */ @@ -307,7 +281,7 @@ 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, |