From: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
Add charge control support for SM8550 and X1E80100. It's supported
with below two power supply properties:
charge_control_end_threshold: The battery SoC (State of Charge)
threshold at which the charging should be terminated.
charge_control_start_threshold: The battery SoC threshold at
which the charging should be resumed.
Signed-off-by: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
---
drivers/power/supply/qcom_battmgr.c | 290 +++++++++++++++++++++++++++++++++++-
1 file changed, 283 insertions(+), 7 deletions(-)
diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c
index 174d3f83ac2b070bb90c21a498686e91cc629ebe..23c68eb942f1b213f634e31a45420b3e113e2764 100644
--- a/drivers/power/supply/qcom_battmgr.c
+++ b/drivers/power/supply/qcom_battmgr.c
@@ -7,6 +7,7 @@
#include <linux/auxiliary_bus.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/nvmem-consumer.h>
#include <linux/of_device.h>
#include <linux/power_supply.h>
#include <linux/property.h>
@@ -68,6 +69,9 @@ enum qcom_battmgr_variant {
#define BATT_RESISTANCE 21
#define BATT_POWER_NOW 22
#define BATT_POWER_AVG 23
+#define BATT_CHG_CTRL_EN 24
+#define BATT_CHG_CTRL_START_THR 25
+#define BATT_CHG_CTRL_END_THR 26
#define BATTMGR_USB_PROPERTY_GET 0x32
#define BATTMGR_USB_PROPERTY_SET 0x33
@@ -92,6 +96,13 @@ enum qcom_battmgr_variant {
#define WLS_TYPE 5
#define WLS_BOOST_EN 6
+#define BATTMGR_CHG_CTRL_LIMIT_EN 0x48
+#define CHARGE_CTRL_START_THR_MIN 50
+#define CHARGE_CTRL_START_THR_MAX 95
+#define CHARGE_CTRL_END_THR_MIN 55
+#define CHARGE_CTRL_END_THR_MAX 100
+#define CHARGE_CTRL_DELTA_SOC 5
+
struct qcom_battmgr_enable_request {
struct pmic_glink_hdr hdr;
__le32 battery_id;
@@ -126,6 +137,13 @@ struct qcom_battmgr_discharge_time_request {
__le32 reserved;
};
+struct qcom_battmgr_charge_ctrl_request {
+ struct pmic_glink_hdr hdr;
+ __le32 enable;
+ __le32 target_soc;
+ __le32 delta_soc;
+};
+
struct qcom_battmgr_message {
struct pmic_glink_hdr hdr;
union {
@@ -238,6 +256,8 @@ struct qcom_battmgr_info {
unsigned int capacity_warning;
unsigned int cycle_count;
unsigned int charge_count;
+ unsigned int charge_ctrl_start;
+ unsigned int charge_ctrl_end;
char model_number[BATTMGR_STRING_LEN];
char serial_number[BATTMGR_STRING_LEN];
char oem_info[BATTMGR_STRING_LEN];
@@ -426,6 +446,8 @@ static const u8 sm8350_bat_prop_map[] = {
[POWER_SUPPLY_PROP_INTERNAL_RESISTANCE] = BATT_RESISTANCE,
[POWER_SUPPLY_PROP_STATE_OF_HEALTH] = BATT_SOH,
[POWER_SUPPLY_PROP_POWER_NOW] = BATT_POWER_NOW,
+ [POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD] = BATT_CHG_CTRL_START_THR,
+ [POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD] = BATT_CHG_CTRL_END_THR,
};
static int qcom_battmgr_bat_sm8350_update(struct qcom_battmgr *battmgr,
@@ -496,7 +518,8 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
if (!battmgr->service_up)
return -EAGAIN;
- if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
+ if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
+ battmgr->variant == QCOM_BATTMGR_X1E80100)
ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
else
ret = qcom_battmgr_bat_sm8350_update(battmgr, psp);
@@ -601,6 +624,12 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
val->intval = battmgr->status.charge_time;
break;
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
+ val->intval = battmgr->info.charge_ctrl_start;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+ val->intval = battmgr->info.charge_ctrl_end;
+ break;
case POWER_SUPPLY_PROP_MANUFACTURE_YEAR:
val->intval = battmgr->info.year;
break;
@@ -626,6 +655,149 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
return 0;
}
+static int qcom_battmgr_set_charge_control(struct qcom_battmgr *battmgr,
+ u32 target_soc, u32 delta_soc)
+{
+ struct qcom_battmgr_charge_ctrl_request request = {
+ .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),
+ .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),
+ .hdr.opcode = cpu_to_le32(BATTMGR_CHG_CTRL_LIMIT_EN),
+ .enable = cpu_to_le32(1),
+ .target_soc = cpu_to_le32(target_soc),
+ .delta_soc = cpu_to_le32(delta_soc),
+ };
+
+ return qcom_battmgr_request(battmgr, &request, sizeof(request));
+}
+
+static int qcom_battmgr_set_charge_start_threshold(struct qcom_battmgr *battmgr, int start_soc)
+{
+ u32 target_soc, delta_soc;
+ int ret;
+
+ if (start_soc < CHARGE_CTRL_START_THR_MIN ||
+ start_soc > CHARGE_CTRL_START_THR_MAX) {
+ dev_err(battmgr->dev, "charge control start threshold exceed range: [%u - %u]\n",
+ CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX);
+ return -EINVAL;
+ }
+
+ /*
+ * If the new start threshold is larger than the old end threshold,
+ * move the end threshold one step (DELTA_SOC) after the new start
+ * threshold.
+ */
+ if (start_soc > battmgr->info.charge_ctrl_end) {
+ target_soc = start_soc + CHARGE_CTRL_DELTA_SOC;
+ target_soc = min_t(u32, target_soc, CHARGE_CTRL_END_THR_MAX);
+ delta_soc = target_soc - start_soc;
+ delta_soc = min_t(u32, delta_soc, CHARGE_CTRL_DELTA_SOC);
+ } else {
+ target_soc = battmgr->info.charge_ctrl_end;
+ delta_soc = battmgr->info.charge_ctrl_end - start_soc;
+ }
+
+ mutex_lock(&battmgr->lock);
+ ret = qcom_battmgr_set_charge_control(battmgr, target_soc, delta_soc);
+ mutex_unlock(&battmgr->lock);
+ if (!ret) {
+ battmgr->info.charge_ctrl_start = start_soc;
+ battmgr->info.charge_ctrl_end = target_soc;
+ }
+
+ return 0;
+}
+
+static int qcom_battmgr_set_charge_end_threshold(struct qcom_battmgr *battmgr, int end_soc)
+{
+ u32 delta_soc = CHARGE_CTRL_DELTA_SOC;
+ int ret;
+
+ if (end_soc < CHARGE_CTRL_END_THR_MIN ||
+ end_soc > CHARGE_CTRL_END_THR_MAX) {
+ dev_err(battmgr->dev, "charge control end threshold exceed range: [%u - %u]\n",
+ CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX);
+ return -EINVAL;
+ }
+
+ if (battmgr->info.charge_ctrl_start && end_soc > battmgr->info.charge_ctrl_start)
+ delta_soc = end_soc - battmgr->info.charge_ctrl_start;
+
+ mutex_lock(&battmgr->lock);
+ ret = qcom_battmgr_set_charge_control(battmgr, end_soc, delta_soc);
+ mutex_unlock(&battmgr->lock);
+ if (!ret) {
+ battmgr->info.charge_ctrl_start = end_soc - delta_soc;
+ battmgr->info.charge_ctrl_end = end_soc;
+ }
+
+ return 0;
+}
+
+static int qcom_battmgr_charge_control_thresholds_init(struct qcom_battmgr *battmgr)
+{
+ int ret;
+ u8 en, end_soc, start_soc, delta_soc;
+
+ ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_en", &en);
+ if (!ret && en != 0) {
+ ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_end", &end_soc);
+ if (ret < 0)
+ return ret;
+
+ ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_delta", &delta_soc);
+ if (ret < 0)
+ return ret;
+
+ if (delta_soc >= end_soc)
+ return -EINVAL;
+
+ start_soc = end_soc - delta_soc;
+ end_soc = clamp(end_soc, CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX);
+ start_soc = clamp(start_soc, CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX);
+
+ battmgr->info.charge_ctrl_start = start_soc;
+ battmgr->info.charge_ctrl_end = end_soc;
+ }
+
+ return 0;
+}
+
+static int qcom_battmgr_bat_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+ return 1;
+ default:
+ return 0;
+ }
+
+ return 0;
+}
+
+static int qcom_battmgr_bat_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *pval)
+{
+ struct qcom_battmgr *battmgr = power_supply_get_drvdata(psy);
+
+ if (!battmgr->service_up)
+ return -EAGAIN;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
+ return qcom_battmgr_set_charge_start_threshold(battmgr, pval->intval);
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+ return qcom_battmgr_set_charge_end_threshold(battmgr, pval->intval);
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static const enum power_supply_property sc8280xp_bat_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
@@ -659,6 +831,43 @@ static const struct power_supply_desc sc8280xp_bat_psy_desc = {
.get_property = qcom_battmgr_bat_get_property,
};
+static const enum power_supply_property x1e80100_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_POWER_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_EMPTY,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
+ POWER_SUPPLY_PROP_ENERGY_FULL,
+ POWER_SUPPLY_PROP_ENERGY_EMPTY,
+ POWER_SUPPLY_PROP_ENERGY_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_MANUFACTURE_YEAR,
+ POWER_SUPPLY_PROP_MANUFACTURE_MONTH,
+ POWER_SUPPLY_PROP_MANUFACTURE_DAY,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+ POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
+ POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
+};
+
+static const struct power_supply_desc x1e80100_bat_psy_desc = {
+ .name = "qcom-battmgr-bat",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = x1e80100_bat_props,
+ .num_properties = ARRAY_SIZE(x1e80100_bat_props),
+ .get_property = qcom_battmgr_bat_get_property,
+ .set_property = qcom_battmgr_bat_set_property,
+ .property_is_writeable = qcom_battmgr_bat_is_writeable,
+};
+
static const enum power_supply_property sm8350_bat_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_HEALTH,
@@ -691,6 +900,42 @@ static const struct power_supply_desc sm8350_bat_psy_desc = {
.get_property = qcom_battmgr_bat_get_property,
};
+static const enum power_supply_property sm8550_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_OCV,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_COUNTER,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_INTERNAL_RESISTANCE,
+ POWER_SUPPLY_PROP_STATE_OF_HEALTH,
+ POWER_SUPPLY_PROP_POWER_NOW,
+ POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
+ POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
+};
+
+static const struct power_supply_desc sm8550_bat_psy_desc = {
+ .name = "qcom-battmgr-bat",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = sm8550_bat_props,
+ .num_properties = ARRAY_SIZE(sm8550_bat_props),
+ .get_property = qcom_battmgr_bat_get_property,
+ .set_property = qcom_battmgr_bat_set_property,
+ .property_is_writeable = qcom_battmgr_bat_is_writeable,
+};
+
static int qcom_battmgr_ac_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -766,7 +1011,8 @@ static int qcom_battmgr_usb_get_property(struct power_supply *psy,
if (!battmgr->service_up)
return -EAGAIN;
- if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
+ if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
+ battmgr->variant == QCOM_BATTMGR_X1E80100)
ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
else
ret = qcom_battmgr_usb_sm8350_update(battmgr, psp);
@@ -888,7 +1134,8 @@ static int qcom_battmgr_wls_get_property(struct power_supply *psy,
if (!battmgr->service_up)
return -EAGAIN;
- if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
+ if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
+ battmgr->variant == QCOM_BATTMGR_X1E80100)
ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
else
ret = qcom_battmgr_wls_sm8350_update(battmgr, psp);
@@ -1085,6 +1332,9 @@ static void qcom_battmgr_sc8280xp_callback(struct qcom_battmgr *battmgr,
case BATTMGR_BAT_CHARGE_TIME:
battmgr->status.charge_time = le32_to_cpu(resp->time);
break;
+ case BATTMGR_CHG_CTRL_LIMIT_EN:
+ battmgr->error = 0;
+ break;
default:
dev_warn(battmgr->dev, "unknown message %#x\n", opcode);
break;
@@ -1198,6 +1448,12 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
case BATT_POWER_NOW:
battmgr->status.power_now = le32_to_cpu(resp->intval.value);
break;
+ case BATT_CHG_CTRL_START_THR:
+ battmgr->info.charge_ctrl_start = le32_to_cpu(resp->intval.value);
+ break;
+ case BATT_CHG_CTRL_END_THR:
+ battmgr->info.charge_ctrl_end = le32_to_cpu(resp->intval.value);
+ break;
default:
dev_warn(battmgr->dev, "unknown property %#x\n", property);
break;
@@ -1280,6 +1536,7 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
}
break;
case BATTMGR_REQUEST_NOTIFICATION:
+ case BATTMGR_CHG_CTRL_LIMIT_EN:
battmgr->error = 0;
break;
default:
@@ -1299,7 +1556,8 @@ static void qcom_battmgr_callback(const void *data, size_t len, void *priv)
if (opcode == BATTMGR_NOTIFICATION)
qcom_battmgr_notification(battmgr, data, len);
- else if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
+ else if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
+ battmgr->variant == QCOM_BATTMGR_X1E80100)
qcom_battmgr_sc8280xp_callback(battmgr, data, len);
else
qcom_battmgr_sm8350_callback(battmgr, data, len);
@@ -1346,11 +1604,13 @@ static char *qcom_battmgr_battery[] = { "battery" };
static int qcom_battmgr_probe(struct auxiliary_device *adev,
const struct auxiliary_device_id *id)
{
+ const struct power_supply_desc *psy_desc;
struct power_supply_config psy_cfg_supply = {};
struct power_supply_config psy_cfg = {};
const struct of_device_id *match;
struct qcom_battmgr *battmgr;
struct device *dev = &adev->dev;
+ int ret;
battmgr = devm_kzalloc(dev, sizeof(*battmgr), GFP_KERNEL);
if (!battmgr)
@@ -1376,8 +1636,19 @@ static int qcom_battmgr_probe(struct auxiliary_device *adev,
else
battmgr->variant = QCOM_BATTMGR_SM8350;
- if (battmgr->variant == QCOM_BATTMGR_SC8280XP) {
- battmgr->bat_psy = devm_power_supply_register(dev, &sc8280xp_bat_psy_desc, &psy_cfg);
+ ret = qcom_battmgr_charge_control_thresholds_init(battmgr);
+ if (ret < 0)
+ return dev_err_probe(dev, ret,
+ "failed to init battery charge control thresholds\n");
+
+ if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
+ battmgr->variant == QCOM_BATTMGR_X1E80100) {
+ if (battmgr->variant == QCOM_BATTMGR_X1E80100)
+ psy_desc = &x1e80100_bat_psy_desc;
+ else
+ psy_desc = &sc8280xp_bat_psy_desc;
+
+ battmgr->bat_psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
if (IS_ERR(battmgr->bat_psy))
return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy),
"failed to register battery power supply\n");
@@ -1397,7 +1668,12 @@ static int qcom_battmgr_probe(struct auxiliary_device *adev,
return dev_err_probe(dev, PTR_ERR(battmgr->wls_psy),
"failed to register wireless charing power supply\n");
} else {
- battmgr->bat_psy = devm_power_supply_register(dev, &sm8350_bat_psy_desc, &psy_cfg);
+ if (battmgr->variant == QCOM_BATTMGR_SM8550)
+ psy_desc = &sm8550_bat_psy_desc;
+ else
+ psy_desc = &sm8350_bat_psy_desc;
+
+ battmgr->bat_psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
if (IS_ERR(battmgr->bat_psy))
return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy),
"failed to register battery power supply\n");
--
2.34.1On 26/08/2025 09:18, Fenglin Wu via B4 Relay wrote:
> From: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
>
> Add charge control support for SM8550 and X1E80100. It's supported
> with below two power supply properties:
>
> charge_control_end_threshold: The battery SoC (State of Charge)
> threshold at which the charging should be terminated.
>
> charge_control_start_threshold: The battery SoC threshold at
> which the charging should be resumed.
>
> Signed-off-by: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
> ---
> drivers/power/supply/qcom_battmgr.c | 290 +++++++++++++++++++++++++++++++++++-
> 1 file changed, 283 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c
> index 174d3f83ac2b070bb90c21a498686e91cc629ebe..23c68eb942f1b213f634e31a45420b3e113e2764 100644
> --- a/drivers/power/supply/qcom_battmgr.c
> +++ b/drivers/power/supply/qcom_battmgr.c
> @@ -7,6 +7,7 @@
> #include <linux/auxiliary_bus.h>
> #include <linux/module.h>
> #include <linux/mutex.h>
> +#include <linux/nvmem-consumer.h>
> #include <linux/of_device.h>
> #include <linux/power_supply.h>
> #include <linux/property.h>
> @@ -68,6 +69,9 @@ enum qcom_battmgr_variant {
> #define BATT_RESISTANCE 21
> #define BATT_POWER_NOW 22
> #define BATT_POWER_AVG 23
> +#define BATT_CHG_CTRL_EN 24
> +#define BATT_CHG_CTRL_START_THR 25
> +#define BATT_CHG_CTRL_END_THR 26
>
> #define BATTMGR_USB_PROPERTY_GET 0x32
> #define BATTMGR_USB_PROPERTY_SET 0x33
> @@ -92,6 +96,13 @@ enum qcom_battmgr_variant {
> #define WLS_TYPE 5
> #define WLS_BOOST_EN 6
>
> +#define BATTMGR_CHG_CTRL_LIMIT_EN 0x48
> +#define CHARGE_CTRL_START_THR_MIN 50
> +#define CHARGE_CTRL_START_THR_MAX 95
> +#define CHARGE_CTRL_END_THR_MIN 55
> +#define CHARGE_CTRL_END_THR_MAX 100
> +#define CHARGE_CTRL_DELTA_SOC 5
> +
> struct qcom_battmgr_enable_request {
> struct pmic_glink_hdr hdr;
> __le32 battery_id;
> @@ -126,6 +137,13 @@ struct qcom_battmgr_discharge_time_request {
> __le32 reserved;
> };
>
> +struct qcom_battmgr_charge_ctrl_request {
> + struct pmic_glink_hdr hdr;
> + __le32 enable;
> + __le32 target_soc;
> + __le32 delta_soc;
> +};
> +
> struct qcom_battmgr_message {
> struct pmic_glink_hdr hdr;
> union {
> @@ -238,6 +256,8 @@ struct qcom_battmgr_info {
> unsigned int capacity_warning;
> unsigned int cycle_count;
> unsigned int charge_count;
> + unsigned int charge_ctrl_start;
> + unsigned int charge_ctrl_end;
> char model_number[BATTMGR_STRING_LEN];
> char serial_number[BATTMGR_STRING_LEN];
> char oem_info[BATTMGR_STRING_LEN];
> @@ -426,6 +446,8 @@ static const u8 sm8350_bat_prop_map[] = {
> [POWER_SUPPLY_PROP_INTERNAL_RESISTANCE] = BATT_RESISTANCE,
> [POWER_SUPPLY_PROP_STATE_OF_HEALTH] = BATT_SOH,
> [POWER_SUPPLY_PROP_POWER_NOW] = BATT_POWER_NOW,
> + [POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD] = BATT_CHG_CTRL_START_THR,
> + [POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD] = BATT_CHG_CTRL_END_THR,
> };
>
> static int qcom_battmgr_bat_sm8350_update(struct qcom_battmgr *battmgr,
> @@ -496,7 +518,8 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
> if (!battmgr->service_up)
> return -EAGAIN;
>
> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
> + battmgr->variant == QCOM_BATTMGR_X1E80100)
> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
> else
> ret = qcom_battmgr_bat_sm8350_update(battmgr, psp);
> @@ -601,6 +624,12 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
> case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
> val->intval = battmgr->status.charge_time;
> break;
> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
> + val->intval = battmgr->info.charge_ctrl_start;
> + break;
> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
> + val->intval = battmgr->info.charge_ctrl_end;
> + break;
> case POWER_SUPPLY_PROP_MANUFACTURE_YEAR:
> val->intval = battmgr->info.year;
> break;
> @@ -626,6 +655,149 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
> return 0;
> }
>
> +static int qcom_battmgr_set_charge_control(struct qcom_battmgr *battmgr,
> + u32 target_soc, u32 delta_soc)
> +{
> + struct qcom_battmgr_charge_ctrl_request request = {
> + .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),
> + .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),
> + .hdr.opcode = cpu_to_le32(BATTMGR_CHG_CTRL_LIMIT_EN),
> + .enable = cpu_to_le32(1),
> + .target_soc = cpu_to_le32(target_soc),
> + .delta_soc = cpu_to_le32(delta_soc),
> + };
> +
> + return qcom_battmgr_request(battmgr, &request, sizeof(request));
> +}
> +
> +static int qcom_battmgr_set_charge_start_threshold(struct qcom_battmgr *battmgr, int start_soc)
> +{
> + u32 target_soc, delta_soc;
> + int ret;
> +
> + if (start_soc < CHARGE_CTRL_START_THR_MIN ||
> + start_soc > CHARGE_CTRL_START_THR_MAX) {
> + dev_err(battmgr->dev, "charge control start threshold exceed range: [%u - %u]\n",
> + CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX);
> + return -EINVAL;
> + }
> +
> + /*
> + * If the new start threshold is larger than the old end threshold,
> + * move the end threshold one step (DELTA_SOC) after the new start
> + * threshold.
> + */
> + if (start_soc > battmgr->info.charge_ctrl_end) {
> + target_soc = start_soc + CHARGE_CTRL_DELTA_SOC;
> + target_soc = min_t(u32, target_soc, CHARGE_CTRL_END_THR_MAX);
> + delta_soc = target_soc - start_soc;
> + delta_soc = min_t(u32, delta_soc, CHARGE_CTRL_DELTA_SOC);
> + } else {
> + target_soc = battmgr->info.charge_ctrl_end;
> + delta_soc = battmgr->info.charge_ctrl_end - start_soc;
> + }
> +
> + mutex_lock(&battmgr->lock);
> + ret = qcom_battmgr_set_charge_control(battmgr, target_soc, delta_soc);
> + mutex_unlock(&battmgr->lock);
> + if (!ret) {
> + battmgr->info.charge_ctrl_start = start_soc;
> + battmgr->info.charge_ctrl_end = target_soc;
> + }
> +
> + return 0;
> +}
> +
> +static int qcom_battmgr_set_charge_end_threshold(struct qcom_battmgr *battmgr, int end_soc)
> +{
> + u32 delta_soc = CHARGE_CTRL_DELTA_SOC;
> + int ret;
> +
> + if (end_soc < CHARGE_CTRL_END_THR_MIN ||
> + end_soc > CHARGE_CTRL_END_THR_MAX) {
> + dev_err(battmgr->dev, "charge control end threshold exceed range: [%u - %u]\n",
> + CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX);
> + return -EINVAL;
> + }
> +
> + if (battmgr->info.charge_ctrl_start && end_soc > battmgr->info.charge_ctrl_start)
> + delta_soc = end_soc - battmgr->info.charge_ctrl_start;
> +
> + mutex_lock(&battmgr->lock);
> + ret = qcom_battmgr_set_charge_control(battmgr, end_soc, delta_soc);
> + mutex_unlock(&battmgr->lock);
> + if (!ret) {
> + battmgr->info.charge_ctrl_start = end_soc - delta_soc;
> + battmgr->info.charge_ctrl_end = end_soc;
> + }
> +
> + return 0;
> +}
> +
> +static int qcom_battmgr_charge_control_thresholds_init(struct qcom_battmgr *battmgr)
> +{
> + int ret;
> + u8 en, end_soc, start_soc, delta_soc;
> +
> + ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_en", &en);
> + if (!ret && en != 0) {
> + ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_end", &end_soc);
> + if (ret < 0)
> + return ret;
> +
> + ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_delta", &delta_soc);
> + if (ret < 0)
> + return ret;
> +
> + if (delta_soc >= end_soc)
> + return -EINVAL;
> +
> + start_soc = end_soc - delta_soc;
> + end_soc = clamp(end_soc, CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX);
> + start_soc = clamp(start_soc, CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX);
> +
> + battmgr->info.charge_ctrl_start = start_soc;
> + battmgr->info.charge_ctrl_end = end_soc;
> + }
> +
> + return 0;
> +}
> +
> +static int qcom_battmgr_bat_is_writeable(struct power_supply *psy,
> + enum power_supply_property psp)
> +{
> + switch (psp) {
> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
> + return 1;
> + default:
> + return 0;
> + }
> +
> + return 0;
> +}
> +
> +static int qcom_battmgr_bat_set_property(struct power_supply *psy,
> + enum power_supply_property psp,
> + const union power_supply_propval *pval)
> +{
> + struct qcom_battmgr *battmgr = power_supply_get_drvdata(psy);
> +
> + if (!battmgr->service_up)
> + return -EAGAIN;
> +
> + switch (psp) {
> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
> + return qcom_battmgr_set_charge_start_threshold(battmgr, pval->intval);
> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
> + return qcom_battmgr_set_charge_end_threshold(battmgr, pval->intval);
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> static const enum power_supply_property sc8280xp_bat_props[] = {
> POWER_SUPPLY_PROP_STATUS,
> POWER_SUPPLY_PROP_PRESENT,
> @@ -659,6 +831,43 @@ static const struct power_supply_desc sc8280xp_bat_psy_desc = {
> .get_property = qcom_battmgr_bat_get_property,
> };
>
> +static const enum power_supply_property x1e80100_bat_props[] = {
> + POWER_SUPPLY_PROP_STATUS,
> + POWER_SUPPLY_PROP_PRESENT,
> + POWER_SUPPLY_PROP_TECHNOLOGY,
> + POWER_SUPPLY_PROP_CYCLE_COUNT,
> + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
> + POWER_SUPPLY_PROP_VOLTAGE_NOW,
> + POWER_SUPPLY_PROP_POWER_NOW,
> + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
> + POWER_SUPPLY_PROP_CHARGE_FULL,
> + POWER_SUPPLY_PROP_CHARGE_EMPTY,
> + POWER_SUPPLY_PROP_CHARGE_NOW,
> + POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
> + POWER_SUPPLY_PROP_ENERGY_FULL,
> + POWER_SUPPLY_PROP_ENERGY_EMPTY,
> + POWER_SUPPLY_PROP_ENERGY_NOW,
> + POWER_SUPPLY_PROP_TEMP,
> + POWER_SUPPLY_PROP_MANUFACTURE_YEAR,
> + POWER_SUPPLY_PROP_MANUFACTURE_MONTH,
> + POWER_SUPPLY_PROP_MANUFACTURE_DAY,
> + POWER_SUPPLY_PROP_MODEL_NAME,
> + POWER_SUPPLY_PROP_MANUFACTURER,
> + POWER_SUPPLY_PROP_SERIAL_NUMBER,
> + POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
> + POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
Is it expected to _not_ have POWER_SUPPLY_PROP_STATE_OF_HEALTH & POWER_SUPPLY_PROP_INTERNAL_RESISTANCE here ?
Neil
> +};
> +
> +static const struct power_supply_desc x1e80100_bat_psy_desc = {
> + .name = "qcom-battmgr-bat",
> + .type = POWER_SUPPLY_TYPE_BATTERY,
> + .properties = x1e80100_bat_props,
> + .num_properties = ARRAY_SIZE(x1e80100_bat_props),
> + .get_property = qcom_battmgr_bat_get_property,
> + .set_property = qcom_battmgr_bat_set_property,
> + .property_is_writeable = qcom_battmgr_bat_is_writeable,
> +};
> +
> static const enum power_supply_property sm8350_bat_props[] = {
> POWER_SUPPLY_PROP_STATUS,
> POWER_SUPPLY_PROP_HEALTH,
> @@ -691,6 +900,42 @@ static const struct power_supply_desc sm8350_bat_psy_desc = {
> .get_property = qcom_battmgr_bat_get_property,
> };
>
> +static const enum power_supply_property sm8550_bat_props[] = {
> + POWER_SUPPLY_PROP_STATUS,
> + POWER_SUPPLY_PROP_HEALTH,
> + POWER_SUPPLY_PROP_PRESENT,
> + POWER_SUPPLY_PROP_CHARGE_TYPE,
> + POWER_SUPPLY_PROP_CAPACITY,
> + POWER_SUPPLY_PROP_VOLTAGE_OCV,
> + POWER_SUPPLY_PROP_VOLTAGE_NOW,
> + POWER_SUPPLY_PROP_VOLTAGE_MAX,
> + POWER_SUPPLY_PROP_CURRENT_NOW,
> + POWER_SUPPLY_PROP_TEMP,
> + POWER_SUPPLY_PROP_TECHNOLOGY,
> + POWER_SUPPLY_PROP_CHARGE_COUNTER,
> + POWER_SUPPLY_PROP_CYCLE_COUNT,
> + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
> + POWER_SUPPLY_PROP_CHARGE_FULL,
> + POWER_SUPPLY_PROP_MODEL_NAME,
> + POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
> + POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
> + POWER_SUPPLY_PROP_INTERNAL_RESISTANCE,
> + POWER_SUPPLY_PROP_STATE_OF_HEALTH,
> + POWER_SUPPLY_PROP_POWER_NOW,
> + POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
> + POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
> +};
> +
> +static const struct power_supply_desc sm8550_bat_psy_desc = {
> + .name = "qcom-battmgr-bat",
> + .type = POWER_SUPPLY_TYPE_BATTERY,
> + .properties = sm8550_bat_props,
> + .num_properties = ARRAY_SIZE(sm8550_bat_props),
> + .get_property = qcom_battmgr_bat_get_property,
> + .set_property = qcom_battmgr_bat_set_property,
> + .property_is_writeable = qcom_battmgr_bat_is_writeable,
> +};
> +
> static int qcom_battmgr_ac_get_property(struct power_supply *psy,
> enum power_supply_property psp,
> union power_supply_propval *val)
> @@ -766,7 +1011,8 @@ static int qcom_battmgr_usb_get_property(struct power_supply *psy,
> if (!battmgr->service_up)
> return -EAGAIN;
>
> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
> + battmgr->variant == QCOM_BATTMGR_X1E80100)
> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
> else
> ret = qcom_battmgr_usb_sm8350_update(battmgr, psp);
> @@ -888,7 +1134,8 @@ static int qcom_battmgr_wls_get_property(struct power_supply *psy,
> if (!battmgr->service_up)
> return -EAGAIN;
>
> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
> + battmgr->variant == QCOM_BATTMGR_X1E80100)
> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
> else
> ret = qcom_battmgr_wls_sm8350_update(battmgr, psp);
> @@ -1085,6 +1332,9 @@ static void qcom_battmgr_sc8280xp_callback(struct qcom_battmgr *battmgr,
> case BATTMGR_BAT_CHARGE_TIME:
> battmgr->status.charge_time = le32_to_cpu(resp->time);
> break;
> + case BATTMGR_CHG_CTRL_LIMIT_EN:
> + battmgr->error = 0;
> + break;
> default:
> dev_warn(battmgr->dev, "unknown message %#x\n", opcode);
> break;
> @@ -1198,6 +1448,12 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
> case BATT_POWER_NOW:
> battmgr->status.power_now = le32_to_cpu(resp->intval.value);
> break;
> + case BATT_CHG_CTRL_START_THR:
> + battmgr->info.charge_ctrl_start = le32_to_cpu(resp->intval.value);
> + break;
> + case BATT_CHG_CTRL_END_THR:
> + battmgr->info.charge_ctrl_end = le32_to_cpu(resp->intval.value);
> + break;
> default:
> dev_warn(battmgr->dev, "unknown property %#x\n", property);
> break;
> @@ -1280,6 +1536,7 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
> }
> break;
> case BATTMGR_REQUEST_NOTIFICATION:
> + case BATTMGR_CHG_CTRL_LIMIT_EN:
> battmgr->error = 0;
> break;
> default:
> @@ -1299,7 +1556,8 @@ static void qcom_battmgr_callback(const void *data, size_t len, void *priv)
>
> if (opcode == BATTMGR_NOTIFICATION)
> qcom_battmgr_notification(battmgr, data, len);
> - else if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
> + else if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
> + battmgr->variant == QCOM_BATTMGR_X1E80100)
> qcom_battmgr_sc8280xp_callback(battmgr, data, len);
> else
> qcom_battmgr_sm8350_callback(battmgr, data, len);
> @@ -1346,11 +1604,13 @@ static char *qcom_battmgr_battery[] = { "battery" };
> static int qcom_battmgr_probe(struct auxiliary_device *adev,
> const struct auxiliary_device_id *id)
> {
> + const struct power_supply_desc *psy_desc;
> struct power_supply_config psy_cfg_supply = {};
> struct power_supply_config psy_cfg = {};
> const struct of_device_id *match;
> struct qcom_battmgr *battmgr;
> struct device *dev = &adev->dev;
> + int ret;
>
> battmgr = devm_kzalloc(dev, sizeof(*battmgr), GFP_KERNEL);
> if (!battmgr)
> @@ -1376,8 +1636,19 @@ static int qcom_battmgr_probe(struct auxiliary_device *adev,
> else
> battmgr->variant = QCOM_BATTMGR_SM8350;
>
> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP) {
> - battmgr->bat_psy = devm_power_supply_register(dev, &sc8280xp_bat_psy_desc, &psy_cfg);
> + ret = qcom_battmgr_charge_control_thresholds_init(battmgr);
> + if (ret < 0)
> + return dev_err_probe(dev, ret,
> + "failed to init battery charge control thresholds\n");
> +
> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
> + battmgr->variant == QCOM_BATTMGR_X1E80100) {
> + if (battmgr->variant == QCOM_BATTMGR_X1E80100)
> + psy_desc = &x1e80100_bat_psy_desc;
> + else
> + psy_desc = &sc8280xp_bat_psy_desc;
> +
> + battmgr->bat_psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
> if (IS_ERR(battmgr->bat_psy))
> return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy),
> "failed to register battery power supply\n");
> @@ -1397,7 +1668,12 @@ static int qcom_battmgr_probe(struct auxiliary_device *adev,
> return dev_err_probe(dev, PTR_ERR(battmgr->wls_psy),
> "failed to register wireless charing power supply\n");
> } else {
> - battmgr->bat_psy = devm_power_supply_register(dev, &sm8350_bat_psy_desc, &psy_cfg);
> + if (battmgr->variant == QCOM_BATTMGR_SM8550)
> + psy_desc = &sm8550_bat_psy_desc;
> + else
> + psy_desc = &sm8350_bat_psy_desc;
> +
> + battmgr->bat_psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
> if (IS_ERR(battmgr->bat_psy))
> return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy),
> "failed to register battery power supply\n");
>
On 9/3/2025 4:29 PM, Neil Armstrong wrote:
> On 26/08/2025 09:18, Fenglin Wu via B4 Relay wrote:
>> From: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
>>
>> Add charge control support for SM8550 and X1E80100. It's supported
>> with below two power supply properties:
>>
>> charge_control_end_threshold: The battery SoC (State of Charge)
>> threshold at which the charging should be terminated.
>>
>> charge_control_start_threshold: The battery SoC threshold at
>> which the charging should be resumed.
>>
>> Signed-off-by: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
>> ---
>> drivers/power/supply/qcom_battmgr.c | 290
>> +++++++++++++++++++++++++++++++++++-
>> 1 file changed, 283 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/power/supply/qcom_battmgr.c
>> b/drivers/power/supply/qcom_battmgr.c
>> index
>> 174d3f83ac2b070bb90c21a498686e91cc629ebe..23c68eb942f1b213f634e31a45420b3e113e2764
>> 100644
>> --- a/drivers/power/supply/qcom_battmgr.c
>> +++ b/drivers/power/supply/qcom_battmgr.c
>> @@ -7,6 +7,7 @@
>> #include <linux/auxiliary_bus.h>
>> #include <linux/module.h>
>> #include <linux/mutex.h>
>> +#include <linux/nvmem-consumer.h>
>> #include <linux/of_device.h>
>> #include <linux/power_supply.h>
>> #include <linux/property.h>
>> @@ -68,6 +69,9 @@ enum qcom_battmgr_variant {
>> #define BATT_RESISTANCE 21
>> #define BATT_POWER_NOW 22
>> #define BATT_POWER_AVG 23
>> +#define BATT_CHG_CTRL_EN 24
>> +#define BATT_CHG_CTRL_START_THR 25
>> +#define BATT_CHG_CTRL_END_THR 26
>> #define BATTMGR_USB_PROPERTY_GET 0x32
>> #define BATTMGR_USB_PROPERTY_SET 0x33
>> @@ -92,6 +96,13 @@ enum qcom_battmgr_variant {
>> #define WLS_TYPE 5
>> #define WLS_BOOST_EN 6
>> +#define BATTMGR_CHG_CTRL_LIMIT_EN 0x48
>> +#define CHARGE_CTRL_START_THR_MIN 50
>> +#define CHARGE_CTRL_START_THR_MAX 95
>> +#define CHARGE_CTRL_END_THR_MIN 55
>> +#define CHARGE_CTRL_END_THR_MAX 100
>> +#define CHARGE_CTRL_DELTA_SOC 5
>> +
>> struct qcom_battmgr_enable_request {
>> struct pmic_glink_hdr hdr;
>> __le32 battery_id;
>> @@ -126,6 +137,13 @@ struct qcom_battmgr_discharge_time_request {
>> __le32 reserved;
>> };
>> +struct qcom_battmgr_charge_ctrl_request {
>> + struct pmic_glink_hdr hdr;
>> + __le32 enable;
>> + __le32 target_soc;
>> + __le32 delta_soc;
>> +};
>> +
>> struct qcom_battmgr_message {
>> struct pmic_glink_hdr hdr;
>> union {
>> @@ -238,6 +256,8 @@ struct qcom_battmgr_info {
>> unsigned int capacity_warning;
>> unsigned int cycle_count;
>> unsigned int charge_count;
>> + unsigned int charge_ctrl_start;
>> + unsigned int charge_ctrl_end;
>> char model_number[BATTMGR_STRING_LEN];
>> char serial_number[BATTMGR_STRING_LEN];
>> char oem_info[BATTMGR_STRING_LEN];
>> @@ -426,6 +446,8 @@ static const u8 sm8350_bat_prop_map[] = {
>> [POWER_SUPPLY_PROP_INTERNAL_RESISTANCE] = BATT_RESISTANCE,
>> [POWER_SUPPLY_PROP_STATE_OF_HEALTH] = BATT_SOH,
>> [POWER_SUPPLY_PROP_POWER_NOW] = BATT_POWER_NOW,
>> + [POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD] =
>> BATT_CHG_CTRL_START_THR,
>> + [POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD] =
>> BATT_CHG_CTRL_END_THR,
>> };
>> static int qcom_battmgr_bat_sm8350_update(struct qcom_battmgr
>> *battmgr,
>> @@ -496,7 +518,8 @@ static int qcom_battmgr_bat_get_property(struct
>> power_supply *psy,
>> if (!battmgr->service_up)
>> return -EAGAIN;
>> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
>> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>> + battmgr->variant == QCOM_BATTMGR_X1E80100)
>> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
>> else
>> ret = qcom_battmgr_bat_sm8350_update(battmgr, psp);
>> @@ -601,6 +624,12 @@ static int qcom_battmgr_bat_get_property(struct
>> power_supply *psy,
>> case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
>> val->intval = battmgr->status.charge_time;
>> break;
>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
>> + val->intval = battmgr->info.charge_ctrl_start;
>> + break;
>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
>> + val->intval = battmgr->info.charge_ctrl_end;
>> + break;
>> case POWER_SUPPLY_PROP_MANUFACTURE_YEAR:
>> val->intval = battmgr->info.year;
>> break;
>> @@ -626,6 +655,149 @@ static int qcom_battmgr_bat_get_property(struct
>> power_supply *psy,
>> return 0;
>> }
>> +static int qcom_battmgr_set_charge_control(struct qcom_battmgr
>> *battmgr,
>> + u32 target_soc, u32 delta_soc)
>> +{
>> + struct qcom_battmgr_charge_ctrl_request request = {
>> + .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),
>> + .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),
>> + .hdr.opcode = cpu_to_le32(BATTMGR_CHG_CTRL_LIMIT_EN),
>> + .enable = cpu_to_le32(1),
>> + .target_soc = cpu_to_le32(target_soc),
>> + .delta_soc = cpu_to_le32(delta_soc),
>> + };
>> +
>> + return qcom_battmgr_request(battmgr, &request, sizeof(request));
>> +}
>> +
>> +static int qcom_battmgr_set_charge_start_threshold(struct
>> qcom_battmgr *battmgr, int start_soc)
>> +{
>> + u32 target_soc, delta_soc;
>> + int ret;
>> +
>> + if (start_soc < CHARGE_CTRL_START_THR_MIN ||
>> + start_soc > CHARGE_CTRL_START_THR_MAX) {
>> + dev_err(battmgr->dev, "charge control start threshold exceed
>> range: [%u - %u]\n",
>> + CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX);
>> + return -EINVAL;
>> + }
>> +
>> + /*
>> + * If the new start threshold is larger than the old end threshold,
>> + * move the end threshold one step (DELTA_SOC) after the new start
>> + * threshold.
>> + */
>> + if (start_soc > battmgr->info.charge_ctrl_end) {
>> + target_soc = start_soc + CHARGE_CTRL_DELTA_SOC;
>> + target_soc = min_t(u32, target_soc, CHARGE_CTRL_END_THR_MAX);
>> + delta_soc = target_soc - start_soc;
>> + delta_soc = min_t(u32, delta_soc, CHARGE_CTRL_DELTA_SOC);
>> + } else {
>> + target_soc = battmgr->info.charge_ctrl_end;
>> + delta_soc = battmgr->info.charge_ctrl_end - start_soc;
>> + }
>> +
>> + mutex_lock(&battmgr->lock);
>> + ret = qcom_battmgr_set_charge_control(battmgr, target_soc,
>> delta_soc);
>> + mutex_unlock(&battmgr->lock);
>> + if (!ret) {
>> + battmgr->info.charge_ctrl_start = start_soc;
>> + battmgr->info.charge_ctrl_end = target_soc;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int qcom_battmgr_set_charge_end_threshold(struct qcom_battmgr
>> *battmgr, int end_soc)
>> +{
>> + u32 delta_soc = CHARGE_CTRL_DELTA_SOC;
>> + int ret;
>> +
>> + if (end_soc < CHARGE_CTRL_END_THR_MIN ||
>> + end_soc > CHARGE_CTRL_END_THR_MAX) {
>> + dev_err(battmgr->dev, "charge control end threshold exceed
>> range: [%u - %u]\n",
>> + CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX);
>> + return -EINVAL;
>> + }
>> +
>> + if (battmgr->info.charge_ctrl_start && end_soc >
>> battmgr->info.charge_ctrl_start)
>> + delta_soc = end_soc - battmgr->info.charge_ctrl_start;
>> +
>> + mutex_lock(&battmgr->lock);
>> + ret = qcom_battmgr_set_charge_control(battmgr, end_soc, delta_soc);
>> + mutex_unlock(&battmgr->lock);
>> + if (!ret) {
>> + battmgr->info.charge_ctrl_start = end_soc - delta_soc;
>> + battmgr->info.charge_ctrl_end = end_soc;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int qcom_battmgr_charge_control_thresholds_init(struct
>> qcom_battmgr *battmgr)
>> +{
>> + int ret;
>> + u8 en, end_soc, start_soc, delta_soc;
>> +
>> + ret = nvmem_cell_read_u8(battmgr->dev->parent,
>> "charge_limit_en", &en);
>> + if (!ret && en != 0) {
>> + ret = nvmem_cell_read_u8(battmgr->dev->parent,
>> "charge_limit_end", &end_soc);
>> + if (ret < 0)
>> + return ret;
>> +
>> + ret = nvmem_cell_read_u8(battmgr->dev->parent,
>> "charge_limit_delta", &delta_soc);
>> + if (ret < 0)
>> + return ret;
>> +
>> + if (delta_soc >= end_soc)
>> + return -EINVAL;
>> +
>> + start_soc = end_soc - delta_soc;
>> + end_soc = clamp(end_soc, CHARGE_CTRL_END_THR_MIN,
>> CHARGE_CTRL_END_THR_MAX);
>> + start_soc = clamp(start_soc, CHARGE_CTRL_START_THR_MIN,
>> CHARGE_CTRL_START_THR_MAX);
>> +
>> + battmgr->info.charge_ctrl_start = start_soc;
>> + battmgr->info.charge_ctrl_end = end_soc;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int qcom_battmgr_bat_is_writeable(struct power_supply *psy,
>> + enum power_supply_property psp)
>> +{
>> + switch (psp) {
>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
>> + return 1;
>> + default:
>> + return 0;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int qcom_battmgr_bat_set_property(struct power_supply *psy,
>> + enum power_supply_property psp,
>> + const union power_supply_propval *pval)
>> +{
>> + struct qcom_battmgr *battmgr = power_supply_get_drvdata(psy);
>> +
>> + if (!battmgr->service_up)
>> + return -EAGAIN;
>> +
>> + switch (psp) {
>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
>> + return qcom_battmgr_set_charge_start_threshold(battmgr,
>> pval->intval);
>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
>> + return qcom_battmgr_set_charge_end_threshold(battmgr,
>> pval->intval);
>> + default:
>> + return -EINVAL;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> static const enum power_supply_property sc8280xp_bat_props[] = {
>> POWER_SUPPLY_PROP_STATUS,
>> POWER_SUPPLY_PROP_PRESENT,
>> @@ -659,6 +831,43 @@ static const struct power_supply_desc
>> sc8280xp_bat_psy_desc = {
>> .get_property = qcom_battmgr_bat_get_property,
>> };
>> +static const enum power_supply_property x1e80100_bat_props[] = {
>> + POWER_SUPPLY_PROP_STATUS,
>> + POWER_SUPPLY_PROP_PRESENT,
>> + POWER_SUPPLY_PROP_TECHNOLOGY,
>> + POWER_SUPPLY_PROP_CYCLE_COUNT,
>> + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
>> + POWER_SUPPLY_PROP_VOLTAGE_NOW,
>> + POWER_SUPPLY_PROP_POWER_NOW,
>> + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
>> + POWER_SUPPLY_PROP_CHARGE_FULL,
>> + POWER_SUPPLY_PROP_CHARGE_EMPTY,
>> + POWER_SUPPLY_PROP_CHARGE_NOW,
>> + POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
>> + POWER_SUPPLY_PROP_ENERGY_FULL,
>> + POWER_SUPPLY_PROP_ENERGY_EMPTY,
>> + POWER_SUPPLY_PROP_ENERGY_NOW,
>> + POWER_SUPPLY_PROP_TEMP,
>> + POWER_SUPPLY_PROP_MANUFACTURE_YEAR,
>> + POWER_SUPPLY_PROP_MANUFACTURE_MONTH,
>> + POWER_SUPPLY_PROP_MANUFACTURE_DAY,
>> + POWER_SUPPLY_PROP_MODEL_NAME,
>> + POWER_SUPPLY_PROP_MANUFACTURER,
>> + POWER_SUPPLY_PROP_SERIAL_NUMBER,
>> + POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
>> + POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
>
> Is it expected to _not_ have POWER_SUPPLY_PROP_STATE_OF_HEALTH &
> POWER_SUPPLY_PROP_INTERNAL_RESISTANCE here ?
>
> Neil
No, X1E80100 platform doesn't have battery resistance/SOH information
exported in battery management firmware
>
>> +};
>> +
>> +static const struct power_supply_desc x1e80100_bat_psy_desc = {
>> + .name = "qcom-battmgr-bat",
>> + .type = POWER_SUPPLY_TYPE_BATTERY,
>> + .properties = x1e80100_bat_props,
>> + .num_properties = ARRAY_SIZE(x1e80100_bat_props),
>> + .get_property = qcom_battmgr_bat_get_property,
>> + .set_property = qcom_battmgr_bat_set_property,
>> + .property_is_writeable = qcom_battmgr_bat_is_writeable,
>> +};
>> +
>> static const enum power_supply_property sm8350_bat_props[] = {
>> POWER_SUPPLY_PROP_STATUS,
>> POWER_SUPPLY_PROP_HEALTH,
>> @@ -691,6 +900,42 @@ static const struct power_supply_desc
>> sm8350_bat_psy_desc = {
>> .get_property = qcom_battmgr_bat_get_property,
>> };
>> +static const enum power_supply_property sm8550_bat_props[] = {
>> + POWER_SUPPLY_PROP_STATUS,
>> + POWER_SUPPLY_PROP_HEALTH,
>> + POWER_SUPPLY_PROP_PRESENT,
>> + POWER_SUPPLY_PROP_CHARGE_TYPE,
>> + POWER_SUPPLY_PROP_CAPACITY,
>> + POWER_SUPPLY_PROP_VOLTAGE_OCV,
>> + POWER_SUPPLY_PROP_VOLTAGE_NOW,
>> + POWER_SUPPLY_PROP_VOLTAGE_MAX,
>> + POWER_SUPPLY_PROP_CURRENT_NOW,
>> + POWER_SUPPLY_PROP_TEMP,
>> + POWER_SUPPLY_PROP_TECHNOLOGY,
>> + POWER_SUPPLY_PROP_CHARGE_COUNTER,
>> + POWER_SUPPLY_PROP_CYCLE_COUNT,
>> + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
>> + POWER_SUPPLY_PROP_CHARGE_FULL,
>> + POWER_SUPPLY_PROP_MODEL_NAME,
>> + POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
>> + POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
>> + POWER_SUPPLY_PROP_INTERNAL_RESISTANCE,
>> + POWER_SUPPLY_PROP_STATE_OF_HEALTH,
>> + POWER_SUPPLY_PROP_POWER_NOW,
>> + POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
>> + POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
>> +};
>> +
>> +static const struct power_supply_desc sm8550_bat_psy_desc = {
>> + .name = "qcom-battmgr-bat",
>> + .type = POWER_SUPPLY_TYPE_BATTERY,
>> + .properties = sm8550_bat_props,
>> + .num_properties = ARRAY_SIZE(sm8550_bat_props),
>> + .get_property = qcom_battmgr_bat_get_property,
>> + .set_property = qcom_battmgr_bat_set_property,
>> + .property_is_writeable = qcom_battmgr_bat_is_writeable,
>> +};
>> +
>> static int qcom_battmgr_ac_get_property(struct power_supply *psy,
>> enum power_supply_property psp,
>> union power_supply_propval *val)
>> @@ -766,7 +1011,8 @@ static int qcom_battmgr_usb_get_property(struct
>> power_supply *psy,
>> if (!battmgr->service_up)
>> return -EAGAIN;
>> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
>> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>> + battmgr->variant == QCOM_BATTMGR_X1E80100)
>> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
>> else
>> ret = qcom_battmgr_usb_sm8350_update(battmgr, psp);
>> @@ -888,7 +1134,8 @@ static int qcom_battmgr_wls_get_property(struct
>> power_supply *psy,
>> if (!battmgr->service_up)
>> return -EAGAIN;
>> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
>> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>> + battmgr->variant == QCOM_BATTMGR_X1E80100)
>> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
>> else
>> ret = qcom_battmgr_wls_sm8350_update(battmgr, psp);
>> @@ -1085,6 +1332,9 @@ static void
>> qcom_battmgr_sc8280xp_callback(struct qcom_battmgr *battmgr,
>> case BATTMGR_BAT_CHARGE_TIME:
>> battmgr->status.charge_time = le32_to_cpu(resp->time);
>> break;
>> + case BATTMGR_CHG_CTRL_LIMIT_EN:
>> + battmgr->error = 0;
>> + break;
>> default:
>> dev_warn(battmgr->dev, "unknown message %#x\n", opcode);
>> break;
>> @@ -1198,6 +1448,12 @@ static void
>> qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
>> case BATT_POWER_NOW:
>> battmgr->status.power_now =
>> le32_to_cpu(resp->intval.value);
>> break;
>> + case BATT_CHG_CTRL_START_THR:
>> + battmgr->info.charge_ctrl_start =
>> le32_to_cpu(resp->intval.value);
>> + break;
>> + case BATT_CHG_CTRL_END_THR:
>> + battmgr->info.charge_ctrl_end =
>> le32_to_cpu(resp->intval.value);
>> + break;
>> default:
>> dev_warn(battmgr->dev, "unknown property %#x\n",
>> property);
>> break;
>> @@ -1280,6 +1536,7 @@ static void qcom_battmgr_sm8350_callback(struct
>> qcom_battmgr *battmgr,
>> }
>> break;
>> case BATTMGR_REQUEST_NOTIFICATION:
>> + case BATTMGR_CHG_CTRL_LIMIT_EN:
>> battmgr->error = 0;
>> break;
>> default:
>> @@ -1299,7 +1556,8 @@ static void qcom_battmgr_callback(const void
>> *data, size_t len, void *priv)
>> if (opcode == BATTMGR_NOTIFICATION)
>> qcom_battmgr_notification(battmgr, data, len);
>> - else if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
>> + else if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>> + battmgr->variant == QCOM_BATTMGR_X1E80100)
>> qcom_battmgr_sc8280xp_callback(battmgr, data, len);
>> else
>> qcom_battmgr_sm8350_callback(battmgr, data, len);
>> @@ -1346,11 +1604,13 @@ static char *qcom_battmgr_battery[] = {
>> "battery" };
>> static int qcom_battmgr_probe(struct auxiliary_device *adev,
>> const struct auxiliary_device_id *id)
>> {
>> + const struct power_supply_desc *psy_desc;
>> struct power_supply_config psy_cfg_supply = {};
>> struct power_supply_config psy_cfg = {};
>> const struct of_device_id *match;
>> struct qcom_battmgr *battmgr;
>> struct device *dev = &adev->dev;
>> + int ret;
>> battmgr = devm_kzalloc(dev, sizeof(*battmgr), GFP_KERNEL);
>> if (!battmgr)
>> @@ -1376,8 +1636,19 @@ static int qcom_battmgr_probe(struct
>> auxiliary_device *adev,
>> else
>> battmgr->variant = QCOM_BATTMGR_SM8350;
>> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP) {
>> - battmgr->bat_psy = devm_power_supply_register(dev,
>> &sc8280xp_bat_psy_desc, &psy_cfg);
>> + ret = qcom_battmgr_charge_control_thresholds_init(battmgr);
>> + if (ret < 0)
>> + return dev_err_probe(dev, ret,
>> + "failed to init battery charge control
>> thresholds\n");
>> +
>> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>> + battmgr->variant == QCOM_BATTMGR_X1E80100) {
>> + if (battmgr->variant == QCOM_BATTMGR_X1E80100)
>> + psy_desc = &x1e80100_bat_psy_desc;
>> + else
>> + psy_desc = &sc8280xp_bat_psy_desc;
>> +
>> + battmgr->bat_psy = devm_power_supply_register(dev, psy_desc,
>> &psy_cfg);
>> if (IS_ERR(battmgr->bat_psy))
>> return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy),
>> "failed to register battery power supply\n");
>> @@ -1397,7 +1668,12 @@ static int qcom_battmgr_probe(struct
>> auxiliary_device *adev,
>> return dev_err_probe(dev, PTR_ERR(battmgr->wls_psy),
>> "failed to register wireless charing power
>> supply\n");
>> } else {
>> - battmgr->bat_psy = devm_power_supply_register(dev,
>> &sm8350_bat_psy_desc, &psy_cfg);
>> + if (battmgr->variant == QCOM_BATTMGR_SM8550)
>> + psy_desc = &sm8550_bat_psy_desc;
>> + else
>> + psy_desc = &sm8350_bat_psy_desc;
>> +
>> + battmgr->bat_psy = devm_power_supply_register(dev, psy_desc,
>> &psy_cfg);
>> if (IS_ERR(battmgr->bat_psy))
>> return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy),
>> "failed to register battery power supply\n");
>>
>
On 05/09/2025 03:19, Fenglin Wu wrote:
>
> On 9/3/2025 4:29 PM, Neil Armstrong wrote:
>> On 26/08/2025 09:18, Fenglin Wu via B4 Relay wrote:
>>> From: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
>>>
>>> Add charge control support for SM8550 and X1E80100. It's supported
>>> with below two power supply properties:
>>>
>>> charge_control_end_threshold: The battery SoC (State of Charge)
>>> threshold at which the charging should be terminated.
>>>
>>> charge_control_start_threshold: The battery SoC threshold at
>>> which the charging should be resumed.
>>>
>>> Signed-off-by: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
>>> ---
>>> drivers/power/supply/qcom_battmgr.c | 290 +++++++++++++++++++++++++++++++++++-
>>> 1 file changed, 283 insertions(+), 7 deletions(-)
>>>
>>> diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c
>>> index 174d3f83ac2b070bb90c21a498686e91cc629ebe..23c68eb942f1b213f634e31a45420b3e113e2764 100644
>>> --- a/drivers/power/supply/qcom_battmgr.c
>>> +++ b/drivers/power/supply/qcom_battmgr.c
>>> @@ -7,6 +7,7 @@
>>> #include <linux/auxiliary_bus.h>
>>> #include <linux/module.h>
>>> #include <linux/mutex.h>
>>> +#include <linux/nvmem-consumer.h>
>>> #include <linux/of_device.h>
>>> #include <linux/power_supply.h>
>>> #include <linux/property.h>
>>> @@ -68,6 +69,9 @@ enum qcom_battmgr_variant {
>>> #define BATT_RESISTANCE 21
>>> #define BATT_POWER_NOW 22
>>> #define BATT_POWER_AVG 23
>>> +#define BATT_CHG_CTRL_EN 24
>>> +#define BATT_CHG_CTRL_START_THR 25
>>> +#define BATT_CHG_CTRL_END_THR 26
>>> #define BATTMGR_USB_PROPERTY_GET 0x32
>>> #define BATTMGR_USB_PROPERTY_SET 0x33
>>> @@ -92,6 +96,13 @@ enum qcom_battmgr_variant {
>>> #define WLS_TYPE 5
>>> #define WLS_BOOST_EN 6
>>> +#define BATTMGR_CHG_CTRL_LIMIT_EN 0x48
>>> +#define CHARGE_CTRL_START_THR_MIN 50
>>> +#define CHARGE_CTRL_START_THR_MAX 95
>>> +#define CHARGE_CTRL_END_THR_MIN 55
>>> +#define CHARGE_CTRL_END_THR_MAX 100
>>> +#define CHARGE_CTRL_DELTA_SOC 5
>>> +
>>> struct qcom_battmgr_enable_request {
>>> struct pmic_glink_hdr hdr;
>>> __le32 battery_id;
>>> @@ -126,6 +137,13 @@ struct qcom_battmgr_discharge_time_request {
>>> __le32 reserved;
>>> };
>>> +struct qcom_battmgr_charge_ctrl_request {
>>> + struct pmic_glink_hdr hdr;
>>> + __le32 enable;
>>> + __le32 target_soc;
>>> + __le32 delta_soc;
>>> +};
>>> +
>>> struct qcom_battmgr_message {
>>> struct pmic_glink_hdr hdr;
>>> union {
>>> @@ -238,6 +256,8 @@ struct qcom_battmgr_info {
>>> unsigned int capacity_warning;
>>> unsigned int cycle_count;
>>> unsigned int charge_count;
>>> + unsigned int charge_ctrl_start;
>>> + unsigned int charge_ctrl_end;
>>> char model_number[BATTMGR_STRING_LEN];
>>> char serial_number[BATTMGR_STRING_LEN];
>>> char oem_info[BATTMGR_STRING_LEN];
>>> @@ -426,6 +446,8 @@ static const u8 sm8350_bat_prop_map[] = {
>>> [POWER_SUPPLY_PROP_INTERNAL_RESISTANCE] = BATT_RESISTANCE,
>>> [POWER_SUPPLY_PROP_STATE_OF_HEALTH] = BATT_SOH,
>>> [POWER_SUPPLY_PROP_POWER_NOW] = BATT_POWER_NOW,
>>> + [POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD] = BATT_CHG_CTRL_START_THR,
>>> + [POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD] = BATT_CHG_CTRL_END_THR,
>>> };
>>> static int qcom_battmgr_bat_sm8350_update(struct qcom_battmgr *battmgr,
>>> @@ -496,7 +518,8 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
>>> if (!battmgr->service_up)
>>> return -EAGAIN;
>>> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
>>> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>>> + battmgr->variant == QCOM_BATTMGR_X1E80100)
>>> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
>>> else
>>> ret = qcom_battmgr_bat_sm8350_update(battmgr, psp);
>>> @@ -601,6 +624,12 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
>>> case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
>>> val->intval = battmgr->status.charge_time;
>>> break;
>>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
>>> + val->intval = battmgr->info.charge_ctrl_start;
>>> + break;
>>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
>>> + val->intval = battmgr->info.charge_ctrl_end;
>>> + break;
>>> case POWER_SUPPLY_PROP_MANUFACTURE_YEAR:
>>> val->intval = battmgr->info.year;
>>> break;
>>> @@ -626,6 +655,149 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
>>> return 0;
>>> }
>>> +static int qcom_battmgr_set_charge_control(struct qcom_battmgr *battmgr,
>>> + u32 target_soc, u32 delta_soc)
>>> +{
>>> + struct qcom_battmgr_charge_ctrl_request request = {
>>> + .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),
>>> + .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),
>>> + .hdr.opcode = cpu_to_le32(BATTMGR_CHG_CTRL_LIMIT_EN),
>>> + .enable = cpu_to_le32(1),
>>> + .target_soc = cpu_to_le32(target_soc),
>>> + .delta_soc = cpu_to_le32(delta_soc),
>>> + };
>>> +
>>> + return qcom_battmgr_request(battmgr, &request, sizeof(request));
>>> +}
>>> +
>>> +static int qcom_battmgr_set_charge_start_threshold(struct qcom_battmgr *battmgr, int start_soc)
>>> +{
>>> + u32 target_soc, delta_soc;
>>> + int ret;
>>> +
>>> + if (start_soc < CHARGE_CTRL_START_THR_MIN ||
>>> + start_soc > CHARGE_CTRL_START_THR_MAX) {
>>> + dev_err(battmgr->dev, "charge control start threshold exceed range: [%u - %u]\n",
>>> + CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX);
>>> + return -EINVAL;
>>> + }
>>> +
>>> + /*
>>> + * If the new start threshold is larger than the old end threshold,
>>> + * move the end threshold one step (DELTA_SOC) after the new start
>>> + * threshold.
>>> + */
>>> + if (start_soc > battmgr->info.charge_ctrl_end) {
>>> + target_soc = start_soc + CHARGE_CTRL_DELTA_SOC;
>>> + target_soc = min_t(u32, target_soc, CHARGE_CTRL_END_THR_MAX);
>>> + delta_soc = target_soc - start_soc;
>>> + delta_soc = min_t(u32, delta_soc, CHARGE_CTRL_DELTA_SOC);
>>> + } else {
>>> + target_soc = battmgr->info.charge_ctrl_end;
>>> + delta_soc = battmgr->info.charge_ctrl_end - start_soc;
>>> + }
>>> +
>>> + mutex_lock(&battmgr->lock);
>>> + ret = qcom_battmgr_set_charge_control(battmgr, target_soc, delta_soc);
>>> + mutex_unlock(&battmgr->lock);
>>> + if (!ret) {
>>> + battmgr->info.charge_ctrl_start = start_soc;
>>> + battmgr->info.charge_ctrl_end = target_soc;
>>> + }
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int qcom_battmgr_set_charge_end_threshold(struct qcom_battmgr *battmgr, int end_soc)
>>> +{
>>> + u32 delta_soc = CHARGE_CTRL_DELTA_SOC;
>>> + int ret;
>>> +
>>> + if (end_soc < CHARGE_CTRL_END_THR_MIN ||
>>> + end_soc > CHARGE_CTRL_END_THR_MAX) {
>>> + dev_err(battmgr->dev, "charge control end threshold exceed range: [%u - %u]\n",
>>> + CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX);
>>> + return -EINVAL;
>>> + }
>>> +
>>> + if (battmgr->info.charge_ctrl_start && end_soc > battmgr->info.charge_ctrl_start)
>>> + delta_soc = end_soc - battmgr->info.charge_ctrl_start;
>>> +
>>> + mutex_lock(&battmgr->lock);
>>> + ret = qcom_battmgr_set_charge_control(battmgr, end_soc, delta_soc);
>>> + mutex_unlock(&battmgr->lock);
>>> + if (!ret) {
>>> + battmgr->info.charge_ctrl_start = end_soc - delta_soc;
>>> + battmgr->info.charge_ctrl_end = end_soc;
>>> + }
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int qcom_battmgr_charge_control_thresholds_init(struct qcom_battmgr *battmgr)
>>> +{
>>> + int ret;
>>> + u8 en, end_soc, start_soc, delta_soc;
>>> +
>>> + ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_en", &en);
>>> + if (!ret && en != 0) {
>>> + ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_end", &end_soc);
>>> + if (ret < 0)
>>> + return ret;
>>> +
>>> + ret = nvmem_cell_read_u8(battmgr->dev->parent, "charge_limit_delta", &delta_soc);
>>> + if (ret < 0)
>>> + return ret;
>>> +
>>> + if (delta_soc >= end_soc)
>>> + return -EINVAL;
>>> +
>>> + start_soc = end_soc - delta_soc;
>>> + end_soc = clamp(end_soc, CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX);
>>> + start_soc = clamp(start_soc, CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX);
>>> +
>>> + battmgr->info.charge_ctrl_start = start_soc;
>>> + battmgr->info.charge_ctrl_end = end_soc;
>>> + }
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int qcom_battmgr_bat_is_writeable(struct power_supply *psy,
>>> + enum power_supply_property psp)
>>> +{
>>> + switch (psp) {
>>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
>>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
>>> + return 1;
>>> + default:
>>> + return 0;
>>> + }
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int qcom_battmgr_bat_set_property(struct power_supply *psy,
>>> + enum power_supply_property psp,
>>> + const union power_supply_propval *pval)
>>> +{
>>> + struct qcom_battmgr *battmgr = power_supply_get_drvdata(psy);
>>> +
>>> + if (!battmgr->service_up)
>>> + return -EAGAIN;
>>> +
>>> + switch (psp) {
>>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
>>> + return qcom_battmgr_set_charge_start_threshold(battmgr, pval->intval);
>>> + case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
>>> + return qcom_battmgr_set_charge_end_threshold(battmgr, pval->intval);
>>> + default:
>>> + return -EINVAL;
>>> + }
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static const enum power_supply_property sc8280xp_bat_props[] = {
>>> POWER_SUPPLY_PROP_STATUS,
>>> POWER_SUPPLY_PROP_PRESENT,
>>> @@ -659,6 +831,43 @@ static const struct power_supply_desc sc8280xp_bat_psy_desc = {
>>> .get_property = qcom_battmgr_bat_get_property,
>>> };
>>> +static const enum power_supply_property x1e80100_bat_props[] = {
>>> + POWER_SUPPLY_PROP_STATUS,
>>> + POWER_SUPPLY_PROP_PRESENT,
>>> + POWER_SUPPLY_PROP_TECHNOLOGY,
>>> + POWER_SUPPLY_PROP_CYCLE_COUNT,
>>> + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
>>> + POWER_SUPPLY_PROP_VOLTAGE_NOW,
>>> + POWER_SUPPLY_PROP_POWER_NOW,
>>> + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
>>> + POWER_SUPPLY_PROP_CHARGE_FULL,
>>> + POWER_SUPPLY_PROP_CHARGE_EMPTY,
>>> + POWER_SUPPLY_PROP_CHARGE_NOW,
>>> + POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
>>> + POWER_SUPPLY_PROP_ENERGY_FULL,
>>> + POWER_SUPPLY_PROP_ENERGY_EMPTY,
>>> + POWER_SUPPLY_PROP_ENERGY_NOW,
>>> + POWER_SUPPLY_PROP_TEMP,
>>> + POWER_SUPPLY_PROP_MANUFACTURE_YEAR,
>>> + POWER_SUPPLY_PROP_MANUFACTURE_MONTH,
>>> + POWER_SUPPLY_PROP_MANUFACTURE_DAY,
>>> + POWER_SUPPLY_PROP_MODEL_NAME,
>>> + POWER_SUPPLY_PROP_MANUFACTURER,
>>> + POWER_SUPPLY_PROP_SERIAL_NUMBER,
>>> + POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
>>> + POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
>>
>> Is it expected to _not_ have POWER_SUPPLY_PROP_STATE_OF_HEALTH & POWER_SUPPLY_PROP_INTERNAL_RESISTANCE here ?
>>
>> Neil
>
> No, X1E80100 platform doesn't have battery resistance/SOH information exported in battery management firmware
>
>
>>
>>> +};
>>> +
>>> +static const struct power_supply_desc x1e80100_bat_psy_desc = {
>>> + .name = "qcom-battmgr-bat",
>>> + .type = POWER_SUPPLY_TYPE_BATTERY,
>>> + .properties = x1e80100_bat_props,
>>> + .num_properties = ARRAY_SIZE(x1e80100_bat_props),
>>> + .get_property = qcom_battmgr_bat_get_property,
>>> + .set_property = qcom_battmgr_bat_set_property,
>>> + .property_is_writeable = qcom_battmgr_bat_is_writeable,
>>> +};
>>> +
>>> static const enum power_supply_property sm8350_bat_props[] = {
>>> POWER_SUPPLY_PROP_STATUS,
>>> POWER_SUPPLY_PROP_HEALTH,
>>> @@ -691,6 +900,42 @@ static const struct power_supply_desc sm8350_bat_psy_desc = {
>>> .get_property = qcom_battmgr_bat_get_property,
>>> };
>>> +static const enum power_supply_property sm8550_bat_props[] = {
>>> + POWER_SUPPLY_PROP_STATUS,
>>> + POWER_SUPPLY_PROP_HEALTH,
>>> + POWER_SUPPLY_PROP_PRESENT,
>>> + POWER_SUPPLY_PROP_CHARGE_TYPE,
>>> + POWER_SUPPLY_PROP_CAPACITY,
>>> + POWER_SUPPLY_PROP_VOLTAGE_OCV,
>>> + POWER_SUPPLY_PROP_VOLTAGE_NOW,
>>> + POWER_SUPPLY_PROP_VOLTAGE_MAX,
>>> + POWER_SUPPLY_PROP_CURRENT_NOW,
>>> + POWER_SUPPLY_PROP_TEMP,
>>> + POWER_SUPPLY_PROP_TECHNOLOGY,
>>> + POWER_SUPPLY_PROP_CHARGE_COUNTER,
>>> + POWER_SUPPLY_PROP_CYCLE_COUNT,
>>> + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
>>> + POWER_SUPPLY_PROP_CHARGE_FULL,
>>> + POWER_SUPPLY_PROP_MODEL_NAME,
>>> + POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
>>> + POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
>>> + POWER_SUPPLY_PROP_INTERNAL_RESISTANCE,
>>> + POWER_SUPPLY_PROP_STATE_OF_HEALTH,
>>> + POWER_SUPPLY_PROP_POWER_NOW,
>>> + POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
>>> + POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
>>> +};
>>> +
>>> +static const struct power_supply_desc sm8550_bat_psy_desc = {
>>> + .name = "qcom-battmgr-bat",
>>> + .type = POWER_SUPPLY_TYPE_BATTERY,
>>> + .properties = sm8550_bat_props,
>>> + .num_properties = ARRAY_SIZE(sm8550_bat_props),
>>> + .get_property = qcom_battmgr_bat_get_property,
>>> + .set_property = qcom_battmgr_bat_set_property,
>>> + .property_is_writeable = qcom_battmgr_bat_is_writeable,
>>> +};
>>> +
>>> static int qcom_battmgr_ac_get_property(struct power_supply *psy,
>>> enum power_supply_property psp,
>>> union power_supply_propval *val)
>>> @@ -766,7 +1011,8 @@ static int qcom_battmgr_usb_get_property(struct power_supply *psy,
>>> if (!battmgr->service_up)
>>> return -EAGAIN;
>>> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
>>> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>>> + battmgr->variant == QCOM_BATTMGR_X1E80100)
>>> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
>>> else
>>> ret = qcom_battmgr_usb_sm8350_update(battmgr, psp);
>>> @@ -888,7 +1134,8 @@ static int qcom_battmgr_wls_get_property(struct power_supply *psy,
>>> if (!battmgr->service_up)
>>> return -EAGAIN;
>>> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
>>> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>>> + battmgr->variant == QCOM_BATTMGR_X1E80100)
>>> ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
>>> else
>>> ret = qcom_battmgr_wls_sm8350_update(battmgr, psp);
>>> @@ -1085,6 +1332,9 @@ static void qcom_battmgr_sc8280xp_callback(struct qcom_battmgr *battmgr,
>>> case BATTMGR_BAT_CHARGE_TIME:
>>> battmgr->status.charge_time = le32_to_cpu(resp->time);
>>> break;
>>> + case BATTMGR_CHG_CTRL_LIMIT_EN:
>>> + battmgr->error = 0;
>>> + break;
>>> default:
>>> dev_warn(battmgr->dev, "unknown message %#x\n", opcode);
>>> break;
>>> @@ -1198,6 +1448,12 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
>>> case BATT_POWER_NOW:
>>> battmgr->status.power_now = le32_to_cpu(resp->intval.value);
>>> break;
>>> + case BATT_CHG_CTRL_START_THR:
>>> + battmgr->info.charge_ctrl_start = le32_to_cpu(resp->intval.value);
>>> + break;
>>> + case BATT_CHG_CTRL_END_THR:
>>> + battmgr->info.charge_ctrl_end = le32_to_cpu(resp->intval.value);
>>> + break;
>>> default:
>>> dev_warn(battmgr->dev, "unknown property %#x\n", property);
>>> break;
>>> @@ -1280,6 +1536,7 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
>>> }
>>> break;
>>> case BATTMGR_REQUEST_NOTIFICATION:
>>> + case BATTMGR_CHG_CTRL_LIMIT_EN:
>>> battmgr->error = 0;
>>> break;
>>> default:
>>> @@ -1299,7 +1556,8 @@ static void qcom_battmgr_callback(const void *data, size_t len, void *priv)
>>> if (opcode == BATTMGR_NOTIFICATION)
>>> qcom_battmgr_notification(battmgr, data, len);
>>> - else if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
>>> + else if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>>> + battmgr->variant == QCOM_BATTMGR_X1E80100)
>>> qcom_battmgr_sc8280xp_callback(battmgr, data, len);
>>> else
>>> qcom_battmgr_sm8350_callback(battmgr, data, len);
>>> @@ -1346,11 +1604,13 @@ static char *qcom_battmgr_battery[] = { "battery" };
>>> static int qcom_battmgr_probe(struct auxiliary_device *adev,
>>> const struct auxiliary_device_id *id)
>>> {
>>> + const struct power_supply_desc *psy_desc;
>>> struct power_supply_config psy_cfg_supply = {};
>>> struct power_supply_config psy_cfg = {};
>>> const struct of_device_id *match;
>>> struct qcom_battmgr *battmgr;
>>> struct device *dev = &adev->dev;
>>> + int ret;
>>> battmgr = devm_kzalloc(dev, sizeof(*battmgr), GFP_KERNEL);
>>> if (!battmgr)
>>> @@ -1376,8 +1636,19 @@ static int qcom_battmgr_probe(struct auxiliary_device *adev,
>>> else
>>> battmgr->variant = QCOM_BATTMGR_SM8350;
>>> - if (battmgr->variant == QCOM_BATTMGR_SC8280XP) {
>>> - battmgr->bat_psy = devm_power_supply_register(dev, &sc8280xp_bat_psy_desc, &psy_cfg);
>>> + ret = qcom_battmgr_charge_control_thresholds_init(battmgr);
>>> + if (ret < 0)
>>> + return dev_err_probe(dev, ret,
>>> + "failed to init battery charge control thresholds\n");
>>> +
>>> + if (battmgr->variant == QCOM_BATTMGR_SC8280XP ||
>>> + battmgr->variant == QCOM_BATTMGR_X1E80100) {
>>> + if (battmgr->variant == QCOM_BATTMGR_X1E80100)
>>> + psy_desc = &x1e80100_bat_psy_desc;
>>> + else
>>> + psy_desc = &sc8280xp_bat_psy_desc;
>>> +
>>> + battmgr->bat_psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
>>> if (IS_ERR(battmgr->bat_psy))
>>> return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy),
>>> "failed to register battery power supply\n");
>>> @@ -1397,7 +1668,12 @@ static int qcom_battmgr_probe(struct auxiliary_device *adev,
>>> return dev_err_probe(dev, PTR_ERR(battmgr->wls_psy),
>>> "failed to register wireless charing power supply\n");
>>> } else {
>>> - battmgr->bat_psy = devm_power_supply_register(dev, &sm8350_bat_psy_desc, &psy_cfg);
>>> + if (battmgr->variant == QCOM_BATTMGR_SM8550)
>>> + psy_desc = &sm8550_bat_psy_desc;
>>> + else
>>> + psy_desc = &sm8350_bat_psy_desc;
>>> +
>>> + battmgr->bat_psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
>>> if (IS_ERR(battmgr->bat_psy))
>>> return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy),
>>> "failed to register battery power supply\n");
>>>
>>
Ok, thanks !
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
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