thermal: qpnp-adc-tm: Add die_temp debug logs
Add more die_temp debug logs and fix the units for
converting millidegC to K during reverse calibration.
Also add bound checks in the status read to prevent
spurious interrupts.
Change-Id: I888216383ae9e8aed83bc5b22b4e36499b500c11
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
diff --git a/drivers/hwmon/qpnp-adc-common.c b/drivers/hwmon/qpnp-adc-common.c
index b3b5643..db491e2 100644
--- a/drivers/hwmon/qpnp-adc-common.c
+++ b/drivers/hwmon/qpnp-adc-common.c
@@ -373,7 +373,7 @@
{
struct qpnp_vadc_linear_graph btm_param;
int64_t low_output = 0, high_output = 0;
- int rc = 0;
+ int rc = 0, sign = 0;
rc = qpnp_get_vadc_gain_and_offset(&btm_param, CALIB_ABSOLUTE);
if (rc < 0) {
@@ -384,19 +384,36 @@
/* Convert to Kelvin and account for voltage to be written as 2mV/K */
low_output = (param->low_temp + KELVINMIL_DEGMIL) * 2;
/* Convert to voltage threshold */
- low_output *= btm_param.dy;
- do_div(low_output, btm_param.adc_vref);
+ low_output = (low_output - QPNP_ADC_625_UV) * btm_param.dy;
+ if (low_output < 0) {
+ sign = 1;
+ low_output = -low_output;
+ }
+ do_div(low_output, QPNP_ADC_625_UV);
+ if (sign)
+ low_output = -low_output;
low_output += btm_param.adc_gnd;
+ sign = 0;
/* Convert to Kelvin and account for voltage to be written as 2mV/K */
high_output = (param->high_temp + KELVINMIL_DEGMIL) * 2;
/* Convert to voltage threshold */
- high_output *= btm_param.dy;
- do_div(high_output, btm_param.adc_vref);
+ high_output = (high_output - QPNP_ADC_625_UV) * btm_param.dy;
+ if (high_output < 0) {
+ sign = 1;
+ high_output = -high_output;
+ }
+ do_div(high_output, QPNP_ADC_625_UV);
+ if (sign)
+ high_output = -high_output;
high_output += btm_param.adc_gnd;
- *low_threshold = low_output;
- *high_threshold = high_output;
+ *low_threshold = (uint32_t) low_output;
+ *high_threshold = (uint32_t) high_output;
+ pr_debug("high_temp:%d, low_temp:%d\n", param->high_temp,
+ param->low_temp);
+ pr_debug("adc_code_high:%x, adc_code_low:%x\n", *high_threshold,
+ *low_threshold);
return 0;
}
@@ -637,7 +654,7 @@
uint32_t *low_threshold, uint32_t *high_threshold)
{
struct qpnp_vadc_linear_graph vbatt_param;
- int rc = 0;
+ int rc = 0, sign = 0;
int64_t low_thr = 0, high_thr = 0;
rc = qpnp_get_vadc_gain_and_offset(&vbatt_param, CALIB_ABSOLUTE);
@@ -646,12 +663,25 @@
low_thr = (((param->low_thr/3) - QPNP_ADC_625_UV) *
vbatt_param.dy);
+ if (low_thr < 0) {
+ sign = 1;
+ low_thr = -low_thr;
+ }
do_div(low_thr, QPNP_ADC_625_UV);
+ if (sign)
+ low_thr = -low_thr;
*low_threshold = low_thr + vbatt_param.adc_gnd;
+ sign = 0;
high_thr = (((param->high_thr/3) - QPNP_ADC_625_UV) *
vbatt_param.dy);
+ if (high_thr < 0) {
+ sign = 1;
+ high_thr = -high_thr;
+ }
do_div(high_thr, QPNP_ADC_625_UV);
+ if (sign)
+ high_thr = -high_thr;
*high_threshold = high_thr + vbatt_param.adc_gnd;
pr_debug("high_volt:%d, low_volt:%d\n", param->high_thr,