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path: root/drivers/power/supply/axp288_charger.c
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Diffstat (limited to 'drivers/power/supply/axp288_charger.c')
-rw-r--r--drivers/power/supply/axp288_charger.c387
1 files changed, 159 insertions, 228 deletions
diff --git a/drivers/power/supply/axp288_charger.c b/drivers/power/supply/axp288_charger.c
index 75b8e0c7402b..6be2fe27bb07 100644
--- a/drivers/power/supply/axp288_charger.c
+++ b/drivers/power/supply/axp288_charger.c
@@ -90,20 +90,6 @@
#define CHRG_VLTFC_0C 0xA5 /* 0 DegC */
#define CHRG_VHTFC_45C 0x1F /* 45 DegC */
-#define BAT_IRQ_CFG_CHRG_DONE (1 << 2)
-#define BAT_IRQ_CFG_CHRG_START (1 << 3)
-#define BAT_IRQ_CFG_BAT_SAFE_EXIT (1 << 4)
-#define BAT_IRQ_CFG_BAT_SAFE_ENTER (1 << 5)
-#define BAT_IRQ_CFG_BAT_DISCON (1 << 6)
-#define BAT_IRQ_CFG_BAT_CONN (1 << 7)
-#define BAT_IRQ_CFG_BAT_MASK 0xFC
-
-#define TEMP_IRQ_CFG_QCBTU (1 << 4)
-#define TEMP_IRQ_CFG_CBTU (1 << 5)
-#define TEMP_IRQ_CFG_QCBTO (1 << 6)
-#define TEMP_IRQ_CFG_CBTO (1 << 7)
-#define TEMP_IRQ_CFG_MASK 0xF0
-
#define FG_CNTL_OCV_ADJ_EN (1 << 3)
#define CV_4100MV 4100 /* 4100mV */
@@ -127,6 +113,10 @@
#define ILIM_3000MA 3000 /* 3000mA */
#define AXP288_EXTCON_DEV_NAME "axp288_extcon"
+#define USB_HOST_EXTCON_DEV_NAME "INT3496:00"
+
+static const unsigned int cable_ids[] =
+ { EXTCON_CHG_USB_SDP, EXTCON_CHG_USB_CDP, EXTCON_CHG_USB_DCP };
enum {
VBUS_OV_IRQ = 0,
@@ -143,7 +133,6 @@ enum {
struct axp288_chrg_info {
struct platform_device *pdev;
- struct axp20x_chrg_pdata *pdata;
struct regmap *regmap;
struct regmap_irq_chip_data *regmap_irqc;
int irq[CHRG_INTR_END];
@@ -163,20 +152,16 @@ struct axp288_chrg_info {
struct extcon_dev *edev;
bool connected;
enum power_supply_type chg_type;
- struct notifier_block nb;
+ struct notifier_block nb[ARRAY_SIZE(cable_ids)];
struct work_struct work;
} cable;
- int health;
int inlmt;
int cc;
int cv;
int max_cc;
int max_cv;
- bool online;
- bool present;
- bool enable_charger;
- bool is_charger_enabled;
+ int is_charger_enabled;
};
static inline int axp288_charger_set_cc(struct axp288_chrg_info *info, int cc)
@@ -305,6 +290,9 @@ static int axp288_charger_enable_charger(struct axp288_chrg_info *info,
{
int ret;
+ if ((int)enable == info->is_charger_enabled)
+ return 0;
+
if (enable)
ret = regmap_update_bits(info->regmap, AXP20X_CHRG_CTRL1,
CHRG_CCCV_CHG_EN, CHRG_CCCV_CHG_EN);
@@ -430,8 +418,7 @@ static int axp288_charger_usb_get_property(struct power_supply *psy,
ret = axp288_charger_is_present(info);
if (ret < 0)
goto psy_get_prop_fail;
- info->present = ret;
- val->intval = info->present;
+ val->intval = ret;
break;
case POWER_SUPPLY_PROP_ONLINE:
/* Check for OTG case first */
@@ -442,8 +429,7 @@ static int axp288_charger_usb_get_property(struct power_supply *psy,
ret = axp288_charger_is_online(info);
if (ret < 0)
goto psy_get_prop_fail;
- info->online = ret;
- val->intval = info->online;
+ val->intval = ret;
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = axp288_get_charger_health(info);
@@ -576,20 +562,20 @@ static void axp288_charger_extcon_evt_worker(struct work_struct *work)
struct axp288_chrg_info *info =
container_of(work, struct axp288_chrg_info, cable.work);
int ret, current_limit;
- bool changed = false;
struct extcon_dev *edev = info->cable.edev;
bool old_connected = info->cable.connected;
+ enum power_supply_type old_chg_type = info->cable.chg_type;
/* Determine cable/charger type */
- if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_SDP) > 0) {
+ if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) {
dev_dbg(&info->pdev->dev, "USB SDP charger is connected");
info->cable.connected = true;
info->cable.chg_type = POWER_SUPPLY_TYPE_USB;
- } else if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_CDP) > 0) {
+ } else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) {
dev_dbg(&info->pdev->dev, "USB CDP charger is connected");
info->cable.connected = true;
info->cable.chg_type = POWER_SUPPLY_TYPE_USB_CDP;
- } else if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_DCP) > 0) {
+ } else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) {
dev_dbg(&info->pdev->dev, "USB DCP charger is connected");
info->cable.connected = true;
info->cable.chg_type = POWER_SUPPLY_TYPE_USB_DCP;
@@ -601,22 +587,15 @@ static void axp288_charger_extcon_evt_worker(struct work_struct *work)
}
/* Cable status changed */
- if (old_connected != info->cable.connected)
- changed = true;
-
- if (!changed)
+ if (old_connected == info->cable.connected &&
+ old_chg_type == info->cable.chg_type)
return;
mutex_lock(&info->lock);
- if (info->is_charger_enabled && !info->cable.connected) {
- info->enable_charger = false;
- ret = axp288_charger_enable_charger(info, info->enable_charger);
- if (ret < 0)
- dev_err(&info->pdev->dev,
- "cannot disable charger (%d)", ret);
+ if (info->cable.connected) {
+ axp288_charger_enable_charger(info, false);
- } else if (!info->is_charger_enabled && info->cable.connected) {
switch (info->cable.chg_type) {
case POWER_SUPPLY_TYPE_USB:
current_limit = ILIM_500MA;
@@ -635,36 +614,49 @@ static void axp288_charger_extcon_evt_worker(struct work_struct *work)
/* Set vbus current limit first, then enable charger */
ret = axp288_charger_set_vbus_inlmt(info, current_limit);
- if (ret < 0) {
+ if (ret == 0)
+ axp288_charger_enable_charger(info, true);
+ else
dev_err(&info->pdev->dev,
"error setting current limit (%d)", ret);
- } else {
- info->enable_charger = (current_limit > 0);
- ret = axp288_charger_enable_charger(info,
- info->enable_charger);
- if (ret < 0)
- dev_err(&info->pdev->dev,
- "cannot enable charger (%d)", ret);
- }
+ } else {
+ axp288_charger_enable_charger(info, false);
}
- if (changed)
- info->health = axp288_get_charger_health(info);
-
mutex_unlock(&info->lock);
- if (changed)
- power_supply_changed(info->psy_usb);
+ power_supply_changed(info->psy_usb);
}
-static int axp288_charger_handle_cable_evt(struct notifier_block *nb,
- unsigned long event, void *param)
+/*
+ * We need 3 copies of this, because there is no way to find out for which
+ * cable id we are being called from the passed in arguments; and we must
+ * have a separate nb for each extcon_register_notifier call.
+ */
+static int axp288_charger_handle_cable0_evt(struct notifier_block *nb,
+ unsigned long event, void *param)
{
struct axp288_chrg_info *info =
- container_of(nb, struct axp288_chrg_info, cable.nb);
+ container_of(nb, struct axp288_chrg_info, cable.nb[0]);
+ schedule_work(&info->cable.work);
+ return NOTIFY_OK;
+}
+static int axp288_charger_handle_cable1_evt(struct notifier_block *nb,
+ unsigned long event, void *param)
+{
+ struct axp288_chrg_info *info =
+ container_of(nb, struct axp288_chrg_info, cable.nb[1]);
schedule_work(&info->cable.work);
+ return NOTIFY_OK;
+}
+static int axp288_charger_handle_cable2_evt(struct notifier_block *nb,
+ unsigned long event, void *param)
+{
+ struct axp288_chrg_info *info =
+ container_of(nb, struct axp288_chrg_info, cable.nb[2]);
+ schedule_work(&info->cable.work);
return NOTIFY_OK;
}
@@ -672,7 +664,17 @@ static void axp288_charger_otg_evt_worker(struct work_struct *work)
{
struct axp288_chrg_info *info =
container_of(work, struct axp288_chrg_info, otg.work);
- int ret;
+ struct extcon_dev *edev = info->otg.cable;
+ int ret, usb_host = extcon_get_state(edev, EXTCON_USB_HOST);
+
+ dev_dbg(&info->pdev->dev, "external connector USB-Host is %s\n",
+ usb_host ? "attached" : "detached");
+
+ /*
+ * Set usb_id_short flag to avoid running charger detection logic
+ * in case usb host.
+ */
+ info->otg.id_short = usb_host;
/* Disable VBUS path before enabling the 5V boost */
ret = axp288_charger_vbus_path_select(info, !info->otg.id_short);
@@ -685,135 +687,109 @@ static int axp288_charger_handle_otg_evt(struct notifier_block *nb,
{
struct axp288_chrg_info *info =
container_of(nb, struct axp288_chrg_info, otg.id_nb);
- struct extcon_dev *edev = info->otg.cable;
- int usb_host = extcon_get_cable_state_(edev, EXTCON_USB_HOST);
- dev_dbg(&info->pdev->dev, "external connector USB-Host is %s\n",
- usb_host ? "attached" : "detached");
-
- /*
- * Set usb_id_short flag to avoid running charger detection logic
- * in case usb host.
- */
- info->otg.id_short = usb_host;
schedule_work(&info->otg.work);
return NOTIFY_OK;
}
-static void charger_init_hw_regs(struct axp288_chrg_info *info)
+static int charger_init_hw_regs(struct axp288_chrg_info *info)
{
int ret, cc, cv;
unsigned int val;
/* Program temperature thresholds */
ret = regmap_write(info->regmap, AXP20X_V_LTF_CHRG, CHRG_VLTFC_0C);
- if (ret < 0)
- dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n",
+ if (ret < 0) {
+ dev_err(&info->pdev->dev, "register(%x) write error(%d)\n",
AXP20X_V_LTF_CHRG, ret);
+ return ret;
+ }
ret = regmap_write(info->regmap, AXP20X_V_HTF_CHRG, CHRG_VHTFC_45C);
- if (ret < 0)
- dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n",
+ if (ret < 0) {
+ dev_err(&info->pdev->dev, "register(%x) write error(%d)\n",
AXP20X_V_HTF_CHRG, ret);
+ return ret;
+ }
/* Do not turn-off charger o/p after charge cycle ends */
ret = regmap_update_bits(info->regmap,
AXP20X_CHRG_CTRL2,
- CNTL2_CHG_OUT_TURNON, 1);
- if (ret < 0)
- dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n",
+ CNTL2_CHG_OUT_TURNON, CNTL2_CHG_OUT_TURNON);
+ if (ret < 0) {
+ dev_err(&info->pdev->dev, "register(%x) write error(%d)\n",
AXP20X_CHRG_CTRL2, ret);
-
- /* Enable interrupts */
- ret = regmap_update_bits(info->regmap,
- AXP20X_IRQ2_EN,
- BAT_IRQ_CFG_BAT_MASK, 1);
- if (ret < 0)
- dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n",
- AXP20X_IRQ2_EN, ret);
-
- ret = regmap_update_bits(info->regmap, AXP20X_IRQ3_EN,
- TEMP_IRQ_CFG_MASK, 1);
- if (ret < 0)
- dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n",
- AXP20X_IRQ3_EN, ret);
+ return ret;
+ }
/* Setup ending condition for charging to be 10% of I(chrg) */
ret = regmap_update_bits(info->regmap,
AXP20X_CHRG_CTRL1,
CHRG_CCCV_ITERM_20P, 0);
- if (ret < 0)
- dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n",
+ if (ret < 0) {
+ dev_err(&info->pdev->dev, "register(%x) write error(%d)\n",
AXP20X_CHRG_CTRL1, ret);
+ return ret;
+ }
/* Disable OCV-SOC curve calibration */
ret = regmap_update_bits(info->regmap,
AXP20X_CC_CTRL,
FG_CNTL_OCV_ADJ_EN, 0);
- if (ret < 0)
- dev_warn(&info->pdev->dev, "register(%x) write error(%d)\n",
+ if (ret < 0) {
+ dev_err(&info->pdev->dev, "register(%x) write error(%d)\n",
AXP20X_CC_CTRL, ret);
-
- /* Init charging current and voltage */
- info->max_cc = info->pdata->max_cc;
- info->max_cv = info->pdata->max_cv;
+ return ret;
+ }
/* Read current charge voltage and current limit */
ret = regmap_read(info->regmap, AXP20X_CHRG_CTRL1, &val);
if (ret < 0) {
- /* Assume default if cannot read */
- info->cc = info->pdata->def_cc;
- info->cv = info->pdata->def_cv;
- } else {
- /* Determine charge voltage */
- cv = (val & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS;
- switch (cv) {
- case CHRG_CCCV_CV_4100MV:
- info->cv = CV_4100MV;
- break;
- case CHRG_CCCV_CV_4150MV:
- info->cv = CV_4150MV;
- break;
- case CHRG_CCCV_CV_4200MV:
- info->cv = CV_4200MV;
- break;
- case CHRG_CCCV_CV_4350MV:
- info->cv = CV_4350MV;
- break;
- default:
- info->cv = INT_MAX;
- break;
- }
+ dev_err(&info->pdev->dev, "register(%x) read error(%d)\n",
+ AXP20X_CHRG_CTRL1, ret);
+ return ret;
+ }
- /* Determine charge current limit */
- cc = (ret & CHRG_CCCV_CC_MASK) >> CHRG_CCCV_CC_BIT_POS;
- cc = (cc * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET;
- info->cc = cc;
+ /* Determine charge voltage */
+ cv = (val & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS;
+ switch (cv) {
+ case CHRG_CCCV_CV_4100MV:
+ info->cv = CV_4100MV;
+ break;
+ case CHRG_CCCV_CV_4150MV:
+ info->cv = CV_4150MV;
+ break;
+ case CHRG_CCCV_CV_4200MV:
+ info->cv = CV_4200MV;
+ break;
+ case CHRG_CCCV_CV_4350MV:
+ info->cv = CV_4350MV;
+ break;
+ }
- /* Program default charging voltage and current */
- cc = min(info->pdata->def_cc, info->max_cc);
- cv = min(info->pdata->def_cv, info->max_cv);
+ /* Determine charge current limit */
+ cc = (ret & CHRG_CCCV_CC_MASK) >> CHRG_CCCV_CC_BIT_POS;
+ cc = (cc * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET;
+ info->cc = cc;
- ret = axp288_charger_set_cc(info, cc);
- if (ret < 0)
- dev_warn(&info->pdev->dev,
- "error(%d) in setting CC\n", ret);
+ /*
+ * Do not allow the user to configure higher settings then those
+ * set by the firmware
+ */
+ info->max_cv = info->cv;
+ info->max_cc = info->cc;
- ret = axp288_charger_set_cv(info, cv);
- if (ret < 0)
- dev_warn(&info->pdev->dev,
- "error(%d) in setting CV\n", ret);
- }
+ return 0;
}
static int axp288_charger_probe(struct platform_device *pdev)
{
int ret, i, pirq;
struct axp288_chrg_info *info;
+ struct device *dev = &pdev->dev;
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
struct power_supply_config charger_cfg = {};
-
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
@@ -821,15 +797,8 @@ static int axp288_charger_probe(struct platform_device *pdev)
info->pdev = pdev;
info->regmap = axp20x->regmap;
info->regmap_irqc = axp20x->regmap_irqc;
- info->pdata = pdev->dev.platform_data;
-
- if (!info->pdata) {
- /* Try ACPI provided pdata via device properties */
- if (!device_property_present(&pdev->dev,
- "axp288_charger_data\n"))
- dev_err(&pdev->dev, "failed to get platform data\n");
- return -ENODEV;
- }
+ info->cable.chg_type = -1;
+ info->is_charger_enabled = -1;
info->cable.edev = extcon_get_extcon_dev(AXP288_EXTCON_DEV_NAME);
if (info->cable.edev == NULL) {
@@ -838,63 +807,55 @@ static int axp288_charger_probe(struct platform_device *pdev)
return -EPROBE_DEFER;
}
- /* Register for extcon notification */
- INIT_WORK(&info->cable.work, axp288_charger_extcon_evt_worker);
- info->cable.nb.notifier_call = axp288_charger_handle_cable_evt;
- ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_SDP,
- &info->cable.nb);
- if (ret) {
- dev_err(&info->pdev->dev,
- "failed to register extcon notifier for SDP %d\n", ret);
- return ret;
- }
-
- ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_CDP,
- &info->cable.nb);
- if (ret) {
- dev_err(&info->pdev->dev,
- "failed to register extcon notifier for CDP %d\n", ret);
- extcon_unregister_notifier(info->cable.edev,
- EXTCON_CHG_USB_SDP, &info->cable.nb);
- return ret;
- }
-
- ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_DCP,
- &info->cable.nb);
- if (ret) {
- dev_err(&info->pdev->dev,
- "failed to register extcon notifier for DCP %d\n", ret);
- extcon_unregister_notifier(info->cable.edev,
- EXTCON_CHG_USB_SDP, &info->cable.nb);
- extcon_unregister_notifier(info->cable.edev,
- EXTCON_CHG_USB_CDP, &info->cable.nb);
- return ret;
+ info->otg.cable = extcon_get_extcon_dev(USB_HOST_EXTCON_DEV_NAME);
+ if (info->otg.cable == NULL) {
+ dev_dbg(dev, "EXTCON_USB_HOST is not ready, probe deferred\n");
+ return -EPROBE_DEFER;
}
platform_set_drvdata(pdev, info);
mutex_init(&info->lock);
+ ret = charger_init_hw_regs(info);
+ if (ret)
+ return ret;
+
/* Register with power supply class */
charger_cfg.drv_data = info;
- info->psy_usb = power_supply_register(&pdev->dev, &axp288_charger_desc,
- &charger_cfg);
+ info->psy_usb = devm_power_supply_register(dev, &axp288_charger_desc,
+ &charger_cfg);
if (IS_ERR(info->psy_usb)) {
- dev_err(&pdev->dev, "failed to register power supply charger\n");
ret = PTR_ERR(info->psy_usb);
- goto psy_reg_failed;
+ dev_err(dev, "failed to register power supply: %d\n", ret);
+ return ret;
+ }
+
+ /* Register for extcon notification */
+ INIT_WORK(&info->cable.work, axp288_charger_extcon_evt_worker);
+ info->cable.nb[0].notifier_call = axp288_charger_handle_cable0_evt;
+ info->cable.nb[1].notifier_call = axp288_charger_handle_cable1_evt;
+ info->cable.nb[2].notifier_call = axp288_charger_handle_cable2_evt;
+ for (i = 0; i < ARRAY_SIZE(cable_ids); i++) {
+ ret = devm_extcon_register_notifier(dev, info->cable.edev,
+ cable_ids[i], &info->cable.nb[i]);
+ if (ret) {
+ dev_err(dev, "failed to register extcon notifier for %u: %d\n",
+ cable_ids[i], ret);
+ return ret;
+ }
}
+ schedule_work(&info->cable.work);
/* Register for OTG notification */
INIT_WORK(&info->otg.work, axp288_charger_otg_evt_worker);
info->otg.id_nb.notifier_call = axp288_charger_handle_otg_evt;
- ret = extcon_register_notifier(info->otg.cable, EXTCON_USB_HOST,
- &info->otg.id_nb);
- if (ret)
- dev_warn(&pdev->dev, "failed to register otg notifier\n");
-
- if (info->otg.cable)
- info->otg.id_short = extcon_get_cable_state_(
- info->otg.cable, EXTCON_USB_HOST);
+ ret = devm_extcon_register_notifier(&pdev->dev, info->otg.cable,
+ EXTCON_USB_HOST, &info->otg.id_nb);
+ if (ret) {
+ dev_err(dev, "failed to register EXTCON_USB_HOST notifier\n");
+ return ret;
+ }
+ schedule_work(&info->otg.work);
/* Register charger interrupts */
for (i = 0; i < CHRG_INTR_END; i++) {
@@ -903,8 +864,7 @@ static int axp288_charger_probe(struct platform_device *pdev)
if (info->irq[i] < 0) {
dev_warn(&info->pdev->dev,
"failed to get virtual interrupt=%d\n", pirq);
- ret = info->irq[i];
- goto intr_reg_failed;
+ return info->irq[i];
}
ret = devm_request_threaded_irq(&info->pdev->dev, info->irq[i],
NULL, axp288_charger_irq_thread_handler,
@@ -912,51 +872,22 @@ static int axp288_charger_probe(struct platform_device *pdev)
if (ret) {
dev_err(&pdev->dev, "failed to request interrupt=%d\n",
info->irq[i]);
- goto intr_reg_failed;
+ return ret;
}
}
- charger_init_hw_regs(info);
-
return 0;
-
-intr_reg_failed:
- if (info->otg.cable)
- extcon_unregister_notifier(info->otg.cable, EXTCON_USB_HOST,
- &info->otg.id_nb);
- power_supply_unregister(info->psy_usb);
-psy_reg_failed:
- extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_SDP,
- &info->cable.nb);
- extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_CDP,
- &info->cable.nb);
- extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_DCP,
- &info->cable.nb);
- return ret;
}
-static int axp288_charger_remove(struct platform_device *pdev)
-{
- struct axp288_chrg_info *info = dev_get_drvdata(&pdev->dev);
-
- if (info->otg.cable)
- extcon_unregister_notifier(info->otg.cable, EXTCON_USB_HOST,
- &info->otg.id_nb);
-
- extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_SDP,
- &info->cable.nb);
- extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_CDP,
- &info->cable.nb);
- extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_DCP,
- &info->cable.nb);
- power_supply_unregister(info->psy_usb);
-
- return 0;
-}
+static const struct platform_device_id axp288_charger_id_table[] = {
+ { .name = "axp288_charger" },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, axp288_charger_id_table);
static struct platform_driver axp288_charger_driver = {
.probe = axp288_charger_probe,
- .remove = axp288_charger_remove,
+ .id_table = axp288_charger_id_table,
.driver = {
.name = "axp288_charger",
},
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-02 05:51:29 +0300