/* Default: temperature hysteresis */
#define AB8500_TEMP_HYSTERESIS 3
-static const struct ab8500_v_to_cap cap_tbl[] = {
- {4186, 100},
- {4163, 99},
- {4114, 95},
- {4068, 90},
- {3990, 80},
- {3926, 70},
- {3898, 65},
- {3866, 60},
- {3833, 55},
- {3812, 50},
- {3787, 40},
- {3768, 30},
- {3747, 25},
- {3730, 20},
- {3705, 15},
- {3699, 14},
- {3684, 12},
- {3672, 9},
- {3657, 7},
- {3638, 6},
- {3556, 4},
- {3424, 2},
- {3317, 1},
- {3094, 0},
+static struct power_supply_battery_ocv_table ocv_cap_tbl[] = {
+ { .ocv = 4186000, .capacity = 100},
+ { .ocv = 4163000, .capacity = 99},
+ { .ocv = 4114000, .capacity = 95},
+ { .ocv = 4068000, .capacity = 90},
+ { .ocv = 3990000, .capacity = 80},
+ { .ocv = 3926000, .capacity = 70},
+ { .ocv = 3898000, .capacity = 65},
+ { .ocv = 3866000, .capacity = 60},
+ { .ocv = 3833000, .capacity = 55},
+ { .ocv = 3812000, .capacity = 50},
+ { .ocv = 3787000, .capacity = 40},
+ { .ocv = 3768000, .capacity = 30},
+ { .ocv = 3747000, .capacity = 25},
+ { .ocv = 3730000, .capacity = 20},
+ { .ocv = 3705000, .capacity = 15},
+ { .ocv = 3699000, .capacity = 14},
+ { .ocv = 3684000, .capacity = 12},
+ { .ocv = 3672000, .capacity = 9},
+ { .ocv = 3657000, .capacity = 7},
+ { .ocv = 3638000, .capacity = 6},
+ { .ocv = 3556000, .capacity = 4},
+ { .ocv = 3424000, .capacity = 2},
+ { .ocv = 3317000, .capacity = 1},
+ { .ocv = 3094000, .capacity = 0},
};
/*
.low_high_vol_lvl = 4000,
.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
.r_to_t_tbl = temp_tbl,
- .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
- .v_to_cap_tbl = cap_tbl,
};
static const struct ab8500_bm_capacity_levels cap_levels = {
.high_curr_time = 60,
.accu_charging = 30,
.accu_high_curr = 30,
- .high_curr_threshold = 50,
- .lowbat_threshold = 3100,
+ .high_curr_threshold_ua = 50000,
+ .lowbat_threshold_uv = 3100000,
.battok_falling_th_sel0 = 2860,
.battok_raising_th_sel1 = 2860,
.maint_thres = 95,
bi->resist_table_size = ARRAY_SIZE(temp_to_batres_tbl_thermistor);
}
+ if (!bi->ocv_table[0]) {
+ /* Default capacity table at say 25 degrees Celsius */
+ bi->ocv_temp[0] = 25;
+ bi->ocv_table[0] = ocv_cap_tbl;
+ bi->ocv_table_size[0] = ARRAY_SIZE(ocv_cap_tbl);
+ }
+
if (bi->temp_min == INT_MIN)
bi->temp_min = AB8500_TEMP_UNDER;
if (bi->temp_max == INT_MAX)
* @dev: Pointer to the structure device
* @node: a list of AB8500 FGs, hence prepared for reentrance
* @irq holds the CCEOC interrupt number
- * @vbat: Battery voltage in mV
+ * @vbat_uv: Battery voltage in uV
* @vbat_nom_uv: Nominal battery voltage in uV
- * @inst_curr: Instantenous battery current in mA
- * @avg_curr: Average battery current in mA
+ * @inst_curr_ua: Instantenous battery current in uA
+ * @avg_curr_ua: Average battery current in uA
* @bat_temp battery temperature
* @fg_samples: Number of samples used in the FG accumulation
* @accu_charge: Accumulated charge from the last conversion
struct device *dev;
struct list_head node;
int irq;
- int vbat;
+ int vbat_uv;
int vbat_nom_uv;
- int inst_curr;
- int avg_curr;
+ int inst_curr_ua;
+ int avg_curr_ua;
int bat_temp;
int fg_samples;
int accu_charge;
/*
* This array maps the raw hex value to lowbat voltage used by the AB8500
- * Values taken from the UM0836
+ * Values taken from the UM0836, in microvolts.
*/
static int ab8500_fg_lowbat_voltage_map[] = {
- 2300 ,
- 2325 ,
- 2350 ,
- 2375 ,
- 2400 ,
- 2425 ,
- 2450 ,
- 2475 ,
- 2500 ,
- 2525 ,
- 2550 ,
- 2575 ,
- 2600 ,
- 2625 ,
- 2650 ,
- 2675 ,
- 2700 ,
- 2725 ,
- 2750 ,
- 2775 ,
- 2800 ,
- 2825 ,
- 2850 ,
- 2875 ,
- 2900 ,
- 2925 ,
- 2950 ,
- 2975 ,
- 3000 ,
- 3025 ,
- 3050 ,
- 3075 ,
- 3100 ,
- 3125 ,
- 3150 ,
- 3175 ,
- 3200 ,
- 3225 ,
- 3250 ,
- 3275 ,
- 3300 ,
- 3325 ,
- 3350 ,
- 3375 ,
- 3400 ,
- 3425 ,
- 3450 ,
- 3475 ,
- 3500 ,
- 3525 ,
- 3550 ,
- 3575 ,
- 3600 ,
- 3625 ,
- 3650 ,
- 3675 ,
- 3700 ,
- 3725 ,
- 3750 ,
- 3775 ,
- 3800 ,
- 3825 ,
- 3850 ,
- 3850 ,
+ 2300000,
+ 2325000,
+ 2350000,
+ 2375000,
+ 2400000,
+ 2425000,
+ 2450000,
+ 2475000,
+ 2500000,
+ 2525000,
+ 2550000,
+ 2575000,
+ 2600000,
+ 2625000,
+ 2650000,
+ 2675000,
+ 2700000,
+ 2725000,
+ 2750000,
+ 2775000,
+ 2800000,
+ 2825000,
+ 2850000,
+ 2875000,
+ 2900000,
+ 2925000,
+ 2950000,
+ 2975000,
+ 3000000,
+ 3025000,
+ 3050000,
+ 3075000,
+ 3100000,
+ 3125000,
+ 3150000,
+ 3175000,
+ 3200000,
+ 3225000,
+ 3250000,
+ 3275000,
+ 3300000,
+ 3325000,
+ 3350000,
+ 3375000,
+ 3400000,
+ 3425000,
+ 3450000,
+ 3475000,
+ 3500000,
+ 3525000,
+ 3550000,
+ 3575000,
+ 3600000,
+ 3625000,
+ 3650000,
+ 3675000,
+ 3700000,
+ 3725000,
+ 3750000,
+ 3775000,
+ 3800000,
+ 3825000,
+ 3850000,
+ 3850000,
};
-static u8 ab8500_volt_to_regval(int voltage)
+static u8 ab8500_volt_to_regval(int voltage_uv)
{
int i;
- if (voltage < ab8500_fg_lowbat_voltage_map[0])
+ if (voltage_uv < ab8500_fg_lowbat_voltage_map[0])
return 0;
for (i = 0; i < ARRAY_SIZE(ab8500_fg_lowbat_voltage_map); i++) {
- if (voltage < ab8500_fg_lowbat_voltage_map[i])
+ if (voltage_uv < ab8500_fg_lowbat_voltage_map[i])
return (u8) i - 1;
}
/**
* ab8500_fg_is_low_curr() - Low or high current mode
* @di: pointer to the ab8500_fg structure
- * @curr: the current to base or our decision on
+ * @curr_ua: the current to base or our decision on in microampere
*
* Low current mode if the current consumption is below a certain threshold
*/
-static int ab8500_fg_is_low_curr(struct ab8500_fg *di, int curr)
+static int ab8500_fg_is_low_curr(struct ab8500_fg *di, int curr_ua)
{
/*
* We want to know if we're in low current mode
*/
- if (curr > -di->bm->fg_params->high_curr_threshold)
+ if (curr_ua > -di->bm->fg_params->high_curr_threshold_ua)
return true;
else
return false;
/**
* ab8500_fg_inst_curr_finalize() - battery instantaneous current
* @di: pointer to the ab8500_fg structure
- * @res: battery instantenous current(on success)
+ * @curr_ua: battery instantenous current in microampere (on success)
*
* Returns 0 or an error code
* Note: This is part "two" and has to be called at earliest 250 ms
* after ab8500_fg_inst_curr_start()
*/
-int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res)
+int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *curr_ua)
{
u8 low, high;
int val;
/*
* Convert to unit value in mA
* Full scale input voltage is
- * 63.160mV => LSB = 63.160mV/(4096*res) = 1.542mA
+ * 63.160mV => LSB = 63.160mV/(4096*res) = 1.542.000 uA
* Given a 250ms conversion cycle time the LSB corresponds
* to 107.1 nAh. Convert to current by dividing by the conversion
* time in hours (250ms = 1 / (3600 * 4)h)
* 107.1nAh assumes 10mOhm, but fg_res is in 0.1mOhm
*/
- val = (val * QLSB_NANO_AMP_HOURS_X10 * 36 * 4) /
- (1000 * di->bm->fg_res);
+ val = (val * QLSB_NANO_AMP_HOURS_X10 * 36 * 4) / di->bm->fg_res;
if (di->turn_off_fg) {
dev_dbg(di->dev, "%s Disable FG\n", __func__);
goto fail;
}
mutex_unlock(&di->cc_lock);
- (*res) = val;
+ *curr_ua = val;
return 0;
fail:
/**
* ab8500_fg_inst_curr_blocking() - battery instantaneous current
* @di: pointer to the ab8500_fg structure
- * @res: battery instantenous current(on success)
*
- * Returns 0 else error code
+ * Returns battery instantenous current in microampere (on success)
+ * else error code
*/
int ab8500_fg_inst_curr_blocking(struct ab8500_fg *di)
{
int ret;
unsigned long timeout;
- int res = 0;
+ int curr_ua = 0;
ret = ab8500_fg_inst_curr_start(di);
if (ret) {
}
}
- ret = ab8500_fg_inst_curr_finalize(di, &res);
+ ret = ab8500_fg_inst_curr_finalize(di, &curr_ua);
if (ret) {
dev_err(di->dev, "Failed to finalize fg_inst\n");
return 0;
}
- dev_dbg(di->dev, "%s instant current: %d", __func__, res);
- return res;
+ dev_dbg(di->dev, "%s instant current: %d uA", __func__, curr_ua);
+ return curr_ua;
fail:
disable_irq(di->irq);
mutex_unlock(&di->cc_lock);
(100 * di->bm->fg_res);
/*
- * Convert to unit value in mA
+ * Convert to unit value in uA
* by dividing by the conversion
* time in hours (= samples / (3600 * 4)h)
- * and multiply with 1000
*/
- di->avg_curr = (val * QLSB_NANO_AMP_HOURS_X10 * 36) /
- (1000 * di->bm->fg_res * (di->fg_samples / 4));
+ di->avg_curr_ua = (val * QLSB_NANO_AMP_HOURS_X10 * 36) /
+ (di->bm->fg_res * (di->fg_samples / 4));
di->flags.conv_done = true;
* ab8500_fg_bat_voltage() - get battery voltage
* @di: pointer to the ab8500_fg structure
*
- * Returns battery voltage(on success) else error code
+ * Returns battery voltage in microvolts (on success) else error code
*/
static int ab8500_fg_bat_voltage(struct ab8500_fg *di)
{
return prev;
}
+ /* IIO returns millivolts but we want microvolts */
+ vbat *= 1000;
prev = vbat;
return vbat;
}
/**
* ab8500_fg_volt_to_capacity() - Voltage based capacity
* @di: pointer to the ab8500_fg structure
- * @voltage: The voltage to convert to a capacity
+ * @voltage_uv: The voltage to convert to a capacity in microvolt
*
* Returns battery capacity in per mille based on voltage
*/
-static int ab8500_fg_volt_to_capacity(struct ab8500_fg *di, int voltage)
+static int ab8500_fg_volt_to_capacity(struct ab8500_fg *di, int voltage_uv)
{
- int i, tbl_size;
- const struct ab8500_v_to_cap *tbl;
- int cap = 0;
-
- tbl = di->bm->bat_type->v_to_cap_tbl;
- tbl_size = di->bm->bat_type->n_v_cap_tbl_elements;
-
- for (i = 0; i < tbl_size; ++i) {
- if (voltage > tbl[i].voltage)
- break;
- }
-
- if ((i > 0) && (i < tbl_size)) {
- cap = fixp_linear_interpolate(
- tbl[i].voltage,
- tbl[i].capacity * 10,
- tbl[i-1].voltage,
- tbl[i-1].capacity * 10,
- voltage);
- } else if (i == 0) {
- cap = 1000;
- } else {
- cap = 0;
- }
-
- dev_dbg(di->dev, "%s Vbat: %d, Cap: %d per mille",
- __func__, voltage, cap);
+ struct power_supply_battery_info *bi = &di->bm->bi;
- return cap;
+ /* Multiply by 10 because the capacity is tracked in per mille */
+ return power_supply_batinfo_ocv2cap(bi, voltage_uv, di->bat_temp) * 10;
}
/**
*/
static int ab8500_fg_uncomp_volt_to_capacity(struct ab8500_fg *di)
{
- di->vbat = ab8500_fg_bat_voltage(di);
- return ab8500_fg_volt_to_capacity(di, di->vbat);
+ di->vbat_uv = ab8500_fg_bat_voltage(di);
+ return ab8500_fg_volt_to_capacity(di, di->vbat_uv);
}
/**
*/
static int ab8500_fg_load_comp_volt_to_capacity(struct ab8500_fg *di)
{
- int vbat_comp, res;
+ int vbat_comp_uv, res;
int i = 0;
- int vbat = 0;
+ int vbat_uv = 0;
ab8500_fg_inst_curr_start(di);
do {
- vbat += ab8500_fg_bat_voltage(di);
+ vbat_uv += ab8500_fg_bat_voltage(di);
i++;
usleep_range(5000, 6000);
} while (!ab8500_fg_inst_curr_done(di));
- ab8500_fg_inst_curr_finalize(di, &di->inst_curr);
+ ab8500_fg_inst_curr_finalize(di, &di->inst_curr_ua);
- di->vbat = vbat / i;
+ di->vbat_uv = vbat_uv / i;
res = ab8500_fg_battery_resistance(di);
- /* Use Ohms law to get the load compensated voltage */
- vbat_comp = di->vbat - (di->inst_curr * res) / 1000;
+ /*
+ * Use Ohms law to get the load compensated voltage.
+ * Divide by 1000 to get from milliohms to ohms.
+ */
+ vbat_comp_uv = di->vbat_uv - (di->inst_curr_ua * res) / 1000;
- dev_dbg(di->dev, "%s Measured Vbat: %dmV,Compensated Vbat %dmV, "
- "R: %dmOhm, Current: %dmA Vbat Samples: %d\n",
- __func__, di->vbat, vbat_comp, res, di->inst_curr, i);
+ dev_dbg(di->dev, "%s Measured Vbat: %d uV,Compensated Vbat %d uV, "
+ "R: %d mOhm, Current: %d uA Vbat Samples: %d\n",
+ __func__, di->vbat_uv, vbat_comp_uv, res, di->inst_curr_ua, i);
- return ab8500_fg_volt_to_capacity(di, vbat_comp);
+ return ab8500_fg_volt_to_capacity(di, vbat_comp_uv);
}
/**
ab8500_fg_convert_mah_to_permille(di, di->bat_cap.mah);
/* We need to update battery voltage and inst current when charging */
- di->vbat = ab8500_fg_bat_voltage(di);
- di->inst_curr = ab8500_fg_inst_curr_blocking(di);
+ di->vbat_uv = ab8500_fg_bat_voltage(di);
+ di->inst_curr_ua = ab8500_fg_inst_curr_blocking(di);
return di->bat_cap.mah;
}
* RECOVERY_SLEEP if time left.
* If high, go to READOUT
*/
- di->inst_curr = ab8500_fg_inst_curr_blocking(di);
+ di->inst_curr_ua = ab8500_fg_inst_curr_blocking(di);
- if (ab8500_fg_is_low_curr(di, di->inst_curr)) {
+ if (ab8500_fg_is_low_curr(di, di->inst_curr_ua)) {
if (di->recovery_cnt >
di->bm->fg_params->recovery_total_time) {
di->fg_samples = SEC_TO_SAMPLE(
break;
case AB8500_FG_DISCHARGE_READOUT:
- di->inst_curr = ab8500_fg_inst_curr_blocking(di);
+ di->inst_curr_ua = ab8500_fg_inst_curr_blocking(di);
- if (ab8500_fg_is_low_curr(di, di->inst_curr)) {
+ if (ab8500_fg_is_low_curr(di, di->inst_curr_ua)) {
/* Detect mode change */
if (di->high_curr_mode) {
di->high_curr_mode = false;
di->bat_cap.prev_mah,
di->bat_cap.prev_percent,
di->bat_cap.prev_level,
- di->vbat,
- di->inst_curr,
- di->avg_curr,
+ di->vbat_uv,
+ di->inst_curr_ua,
+ di->avg_curr_ua,
di->accu_charge,
di->flags.charging,
di->charge_state,
*/
static void ab8500_fg_low_bat_work(struct work_struct *work)
{
- int vbat;
+ int vbat_uv;
struct ab8500_fg *di = container_of(work, struct ab8500_fg,
fg_low_bat_work.work);
- vbat = ab8500_fg_bat_voltage(di);
+ vbat_uv = ab8500_fg_bat_voltage(di);
/* Check if LOW_BAT still fulfilled */
- if (vbat < di->bm->fg_params->lowbat_threshold) {
+ if (vbat_uv < di->bm->fg_params->lowbat_threshold_uv) {
/* Is it time to shut down? */
if (di->low_bat_cnt < 1) {
di->flags.low_bat = true;
switch (psp) {
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
if (di->flags.bat_ovv)
- val->intval = BATT_OVV_VALUE * 1000;
+ val->intval = BATT_OVV_VALUE;
else
- val->intval = di->vbat * 1000;
+ val->intval = di->vbat_uv;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
- val->intval = di->inst_curr * 1000;
+ val->intval = di->inst_curr_ua;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
- val->intval = di->avg_curr * 1000;
+ val->intval = di->avg_curr_ua;
break;
case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
val->intval = ab8500_fg_convert_mah_to_uwh(di,
AB8500_SYS_CTRL2_BLOCK,
AB8500_LOW_BAT_REG,
ab8500_volt_to_regval(
- di->bm->fg_params->lowbat_threshold) << 1 |
+ di->bm->fg_params->lowbat_threshold_uv) << 1 |
LOW_BAT_ENABLE);
if (ret) {
dev_err(di->dev, "%s write failed\n", __func__);
projects / users / jedix / linux-maple.git / commitdiff