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-rw-r--r--drivers/power/reset/Kconfig9
-rw-r--r--drivers/power/reset/Makefile1
-rw-r--r--drivers/power/reset/spacemit-p1-reboot.c88
-rw-r--r--drivers/power/supply/Kconfig24
-rw-r--r--drivers/power/supply/Makefile2
-rw-r--r--drivers/power/supply/apm_power.c3
-rw-r--r--drivers/power/supply/bd71828-power.c1049
-rw-r--r--drivers/power/supply/cw2015_battery.c8
-rw-r--r--drivers/power/supply/max17040_battery.c6
-rw-r--r--drivers/power/supply/max77705_charger.c56
-rw-r--r--drivers/power/supply/qcom_battmgr.c14
-rw-r--r--drivers/power/supply/rt5033_charger.c2
-rw-r--r--drivers/power/supply/rt9467-charger.c6
-rw-r--r--drivers/power/supply/rt9756.c955
-rw-r--r--drivers/power/supply/wm831x_power.c10
15 files changed, 2211 insertions, 22 deletions
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index 8248895ca903..f6c1bcbb57de 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -283,6 +283,15 @@ config POWER_RESET_KEYSTONE
help
Reboot support for the KEYSTONE SoCs.
+config POWER_RESET_SPACEMIT_P1
+ tristate "SpacemiT P1 poweroff and reset driver"
+ depends on ARCH_SPACEMIT || COMPILE_TEST
+ depends on MFD_SPACEMIT_P1
+ default MFD_SPACEMIT_P1
+ help
+ This driver supports power-off and reset operations for the SpacemiT
+ P1 PMIC.
+
config POWER_RESET_SYSCON
bool "Generic SYSCON regmap reset driver"
depends on OF
diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile
index 51da87e05ce7..0e4ae6f6b5c5 100644
--- a/drivers/power/reset/Makefile
+++ b/drivers/power/reset/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_POWER_RESET_LTC2952) += ltc2952-poweroff.o
obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
obj-$(CONFIG_POWER_RESET_REGULATOR) += regulator-poweroff.o
obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o
+obj-$(CONFIG_POWER_RESET_SPACEMIT_P1) += spacemit-p1-reboot.o
obj-$(CONFIG_POWER_RESET_ST) += st-poweroff.o
obj-$(CONFIG_POWER_RESET_TH1520_AON) += th1520-aon-reboot.o
obj-$(CONFIG_POWER_RESET_TORADEX_EC) += tdx-ec-poweroff.o
diff --git a/drivers/power/reset/spacemit-p1-reboot.c b/drivers/power/reset/spacemit-p1-reboot.c
new file mode 100644
index 000000000000..9ec3d1fff8f3
--- /dev/null
+++ b/drivers/power/reset/spacemit-p1-reboot.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 by Aurelien Jarno
+ */
+
+#include <linux/bits.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reboot.h>
+
+/* Power Control Register 2 */
+#define PWR_CTRL2 0x7e
+#define PWR_CTRL2_SHUTDOWN BIT(2) /* Shutdown request */
+#define PWR_CTRL2_RST BIT(1) /* Reset request */
+
+static int spacemit_p1_pwroff_handler(struct sys_off_data *data)
+{
+ struct regmap *regmap = data->cb_data;
+ int ret;
+
+ /* Put the PMIC into shutdown state */
+ ret = regmap_set_bits(regmap, PWR_CTRL2, PWR_CTRL2_SHUTDOWN);
+ if (ret) {
+ dev_err(data->dev, "shutdown failed: %d\n", ret);
+ return notifier_from_errno(ret);
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int spacemit_p1_restart_handler(struct sys_off_data *data)
+{
+ struct regmap *regmap = data->cb_data;
+ int ret;
+
+ /* Put the PMIC into reset state */
+ ret = regmap_set_bits(regmap, PWR_CTRL2, PWR_CTRL2_RST);
+ if (ret) {
+ dev_err(data->dev, "restart failed: %d\n", ret);
+ return notifier_from_errno(ret);
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int spacemit_p1_reboot_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct regmap *regmap;
+ int ret;
+
+ regmap = dev_get_regmap(dev->parent, NULL);
+ if (!regmap)
+ return -ENODEV;
+
+ ret = devm_register_power_off_handler(dev, &spacemit_p1_pwroff_handler,
+ regmap);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to register power off handler\n");
+
+ ret = devm_register_restart_handler(dev, spacemit_p1_restart_handler,
+ regmap);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to register restart handler\n");
+
+ return 0;
+}
+
+static const struct platform_device_id spacemit_p1_reboot_id_table[] = {
+ { "spacemit-p1-reboot", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(platform, spacemit_p1_reboot_id_table);
+
+static struct platform_driver spacemit_p1_reboot_driver = {
+ .driver = {
+ .name = "spacemit-p1-reboot",
+ },
+ .probe = spacemit_p1_reboot_probe,
+ .id_table = spacemit_p1_reboot_id_table,
+};
+module_platform_driver(spacemit_p1_reboot_driver);
+
+MODULE_DESCRIPTION("SpacemiT P1 reboot/poweroff driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index 03c8525b480f..92f9f7aae92f 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -942,6 +942,21 @@ config CHARGER_RT9471
This driver can also be built as a module. If so, the module will be
called rt9471.
+config CHARGER_RT9756
+ tristate "Richtek RT9756 smart cap divider charger driver"
+ depends on I2C
+ select REGMAP_I2C
+ select LINEAR_RANGES
+ help
+ This adds support for Richtek RT9756 smart cap divider charger driver.
+ It's a high efficiency and high charge current charger. the device
+ integrates smart cap divider topology with 9-channel high speed
+ ADCs that can provide input and output voltage, current and
+ temperature monitoring.
+
+ This driver can also be built as a module. If so, the module will be
+ called rt9756.
+
config CHARGER_CROS_USBPD
tristate "ChromeOS EC based USBPD charger"
depends on CROS_USBPD_NOTIFY
@@ -1007,6 +1022,15 @@ config CHARGER_UCS1002
Say Y to enable support for Microchip UCS1002 Programmable
USB Port Power Controller with Charger Emulation.
+config CHARGER_BD71828
+ tristate "Power-supply driver for ROHM BD71828 and BD71815 PMIC"
+ depends on MFD_ROHM_BD71828
+ help
+ Say Y here to enable support for charger and battery
+ in ROHM BD71815, BD71817, ROHM BD71828 power management
+ ICs. This driver gets various bits of information about battery
+ and charger states.
+
config CHARGER_BD99954
tristate "ROHM bd99954 charger driver"
depends on I2C
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 6e37a3edf7e3..4b79d5abc49a 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -64,6 +64,7 @@ obj-$(CONFIG_CHARGER_RT5033) += rt5033_charger.o
obj-$(CONFIG_CHARGER_RT9455) += rt9455_charger.o
obj-$(CONFIG_CHARGER_RT9467) += rt9467-charger.o
obj-$(CONFIG_CHARGER_RT9471) += rt9471.o
+obj-$(CONFIG_CHARGER_RT9756) += rt9756.o
obj-$(CONFIG_BATTERY_TWL4030_MADC) += twl4030_madc_battery.o
obj-$(CONFIG_CHARGER_88PM860X) += 88pm860x_charger.o
obj-$(CONFIG_CHARGER_PF1550) += pf1550-charger.o
@@ -117,6 +118,7 @@ obj-$(CONFIG_CHARGER_SC2731) += sc2731_charger.o
obj-$(CONFIG_FUEL_GAUGE_SC27XX) += sc27xx_fuel_gauge.o
obj-$(CONFIG_FUEL_GAUGE_STC3117) += stc3117_fuel_gauge.o
obj-$(CONFIG_CHARGER_UCS1002) += ucs1002_power.o
+obj-$(CONFIG_CHARGER_BD71828) += bd71828-power.o
obj-$(CONFIG_CHARGER_BD99954) += bd99954-charger.o
obj-$(CONFIG_CHARGER_WILCO) += wilco-charger.o
obj-$(CONFIG_RN5T618_POWER) += rn5t618_power.o
diff --git a/drivers/power/supply/apm_power.c b/drivers/power/supply/apm_power.c
index 9236e0078578..9933cdc5c387 100644
--- a/drivers/power/supply/apm_power.c
+++ b/drivers/power/supply/apm_power.c
@@ -364,7 +364,8 @@ static int __init apm_battery_init(void)
static void __exit apm_battery_exit(void)
{
- apm_get_power_status = NULL;
+ if (apm_get_power_status == apm_battery_apm_get_power_status)
+ apm_get_power_status = NULL;
}
module_init(apm_battery_init);
diff --git a/drivers/power/supply/bd71828-power.c b/drivers/power/supply/bd71828-power.c
new file mode 100644
index 000000000000..f667baedeb77
--- /dev/null
+++ b/drivers/power/supply/bd71828-power.c
@@ -0,0 +1,1049 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ROHM BD71815, BD71828 and BD71878 Charger driver */
+
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/rohm-bd71815.h>
+#include <linux/mfd/rohm-bd71828.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+
+/* common defines */
+#define BD7182x_MASK_VBAT_U 0x1f
+#define BD7182x_MASK_VDCIN_U 0x0f
+#define BD7182x_MASK_IBAT_U 0x3f
+#define BD7182x_MASK_CURDIR_DISCHG 0x80
+#define BD7182x_MASK_CHG_STATE 0x7f
+#define BD7182x_MASK_BAT_TEMP 0x07
+#define BD7182x_MASK_DCIN_DET BIT(0)
+#define BD7182x_MASK_CONF_PON BIT(0)
+#define BD71815_MASK_CONF_XSTB BIT(1)
+#define BD7182x_MASK_BAT_STAT 0x3f
+#define BD7182x_MASK_DCIN_STAT 0x07
+
+#define BD7182x_MASK_WDT_AUTO 0x40
+#define BD7182x_MASK_VBAT_ALM_LIMIT_U 0x01
+#define BD7182x_MASK_CHG_EN 0x01
+
+#define BD7182x_DCIN_COLLAPSE_DEFAULT 0x36
+
+#define MAX_CURRENT_DEFAULT 890000 /* uA */
+#define AC_NAME "bd71828_ac"
+#define BAT_NAME "bd71828_bat"
+
+#define BAT_OPEN 0x7
+
+/*
+ * VBAT Low voltage detection Threshold
+ * 0x00D4*16mV = 212*0.016 = 3.392v
+ */
+#define VBAT_LOW_TH 0x00D4
+
+struct pwr_regs {
+ u8 vbat_avg;
+ u8 ibat;
+ u8 ibat_avg;
+ u8 btemp_vth;
+ u8 chg_state;
+ u8 bat_temp;
+ u8 dcin_stat;
+ u8 dcin_collapse_limit;
+ u8 chg_set1;
+ u8 chg_en;
+ u8 vbat_alm_limit_u;
+ u8 conf;
+ u8 vdcin;
+};
+
+static const struct pwr_regs pwr_regs_bd71828 = {
+ .vbat_avg = BD71828_REG_VBAT_U,
+ .ibat = BD71828_REG_IBAT_U,
+ .ibat_avg = BD71828_REG_IBAT_AVG_U,
+ .btemp_vth = BD71828_REG_VM_BTMP_U,
+ .chg_state = BD71828_REG_CHG_STATE,
+ .bat_temp = BD71828_REG_BAT_TEMP,
+ .dcin_stat = BD71828_REG_DCIN_STAT,
+ .dcin_collapse_limit = BD71828_REG_DCIN_CLPS,
+ .chg_set1 = BD71828_REG_CHG_SET1,
+ .chg_en = BD71828_REG_CHG_EN,
+ .vbat_alm_limit_u = BD71828_REG_ALM_VBAT_LIMIT_U,
+ .conf = BD71828_REG_CONF,
+ .vdcin = BD71828_REG_VDCIN_U,
+};
+
+static const struct pwr_regs pwr_regs_bd71815 = {
+ .vbat_avg = BD71815_REG_VM_SA_VBAT_U,
+ /* BD71815 does not have separate current and current avg */
+ .ibat = BD71815_REG_CC_CURCD_U,
+ .ibat_avg = BD71815_REG_CC_CURCD_U,
+
+ .btemp_vth = BD71815_REG_VM_BTMP,
+ .chg_state = BD71815_REG_CHG_STATE,
+ .bat_temp = BD71815_REG_BAT_TEMP,
+ .dcin_stat = BD71815_REG_DCIN_STAT,
+ .dcin_collapse_limit = BD71815_REG_DCIN_CLPS,
+ .chg_set1 = BD71815_REG_CHG_SET1,
+ .chg_en = BD71815_REG_CHG_SET1,
+ .vbat_alm_limit_u = BD71815_REG_ALM_VBAT_TH_U,
+ .conf = BD71815_REG_CONF,
+
+ .vdcin = BD71815_REG_VM_DCIN_U,
+};
+
+struct bd71828_power {
+ struct regmap *regmap;
+ enum rohm_chip_type chip_type;
+ struct device *dev;
+ struct power_supply *ac;
+ struct power_supply *bat;
+
+ const struct pwr_regs *regs;
+ /* Reg val to uA */
+ int curr_factor;
+ int rsens;
+ int (*get_temp)(struct bd71828_power *pwr, int *temp);
+ int (*bat_inserted)(struct bd71828_power *pwr);
+};
+
+static int bd7182x_write16(struct bd71828_power *pwr, int reg, u16 val)
+{
+ __be16 tmp;
+
+ tmp = cpu_to_be16(val);
+
+ return regmap_bulk_write(pwr->regmap, reg, &tmp, sizeof(tmp));
+}
+
+static int bd7182x_read16_himask(struct bd71828_power *pwr, int reg, int himask,
+ u16 *val)
+{
+ struct regmap *regmap = pwr->regmap;
+ int ret;
+ __be16 rvals;
+ u8 *tmp = (u8 *)&rvals;
+
+ ret = regmap_bulk_read(regmap, reg, &rvals, sizeof(*val));
+ if (!ret) {
+ *tmp &= himask;
+ *val = be16_to_cpu(rvals);
+ }
+
+ return ret;
+}
+
+static int bd71828_get_vbat(struct bd71828_power *pwr, int *vcell)
+{
+ u16 tmp_vcell;
+ int ret;
+
+ ret = bd7182x_read16_himask(pwr, pwr->regs->vbat_avg,
+ BD7182x_MASK_VBAT_U, &tmp_vcell);
+ if (ret)
+ dev_err(pwr->dev, "Failed to read battery average voltage\n");
+ else
+ *vcell = ((int)tmp_vcell) * 1000;
+
+ return ret;
+}
+
+static int bd71828_get_current_ds_adc(struct bd71828_power *pwr, int *curr, int *curr_avg)
+{
+ __be16 tmp_curr;
+ char *tmp = (char *)&tmp_curr;
+ int dir = 1;
+ int regs[] = { pwr->regs->ibat, pwr->regs->ibat_avg };
+ int *vals[] = { curr, curr_avg };
+ int ret, i;
+
+ for (dir = 1, i = 0; i < ARRAY_SIZE(regs); i++) {
+ ret = regmap_bulk_read(pwr->regmap, regs[i], &tmp_curr,
+ sizeof(tmp_curr));
+ if (ret)
+ break;
+
+ if (*tmp & BD7182x_MASK_CURDIR_DISCHG)
+ dir = -1;
+
+ *tmp &= BD7182x_MASK_IBAT_U;
+
+ *vals[i] = dir * ((int)be16_to_cpu(tmp_curr)) * pwr->curr_factor;
+ }
+
+ return ret;
+}
+
+/* Unit is tenths of degree C */
+static int bd71815_get_temp(struct bd71828_power *pwr, int *temp)
+{
+ struct regmap *regmap = pwr->regmap;
+ int ret;
+ int t;
+
+ ret = regmap_read(regmap, pwr->regs->btemp_vth, &t);
+ if (ret)
+ return ret;
+
+ t = 200 - t;
+
+ if (t > 200) {
+ dev_err(pwr->dev, "Failed to read battery temperature\n");
+ return -ENODATA;
+ }
+
+ return 0;
+}
+
+/* Unit is tenths of degree C */
+static int bd71828_get_temp(struct bd71828_power *pwr, int *temp)
+{
+ u16 t;
+ int ret;
+ int tmp = 200 * 10000;
+
+ ret = bd7182x_read16_himask(pwr, pwr->regs->btemp_vth,
+ BD71828_MASK_VM_BTMP_U, &t);
+ if (ret)
+ return ret;
+
+ if (t > 3200) {
+ dev_err(pwr->dev,
+ "Failed to read battery temperature\n");
+ return -ENODATA;
+ }
+
+ tmp -= 625ULL * (unsigned int)t;
+ *temp = tmp / 1000;
+
+ return ret;
+}
+
+static int bd71828_charge_status(struct bd71828_power *pwr,
+ int *s, int *h)
+{
+ unsigned int state;
+ int status, health;
+ int ret = 1;
+
+ ret = regmap_read(pwr->regmap, pwr->regs->chg_state, &state);
+ if (ret) {
+ dev_err(pwr->dev, "charger status reading failed (%d)\n", ret);
+ return ret;
+ }
+
+ state &= BD7182x_MASK_CHG_STATE;
+
+ dev_dbg(pwr->dev, "CHG_STATE %d\n", state);
+
+ switch (state) {
+ case 0x00:
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ health = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case 0x01:
+ case 0x02:
+ case 0x03:
+ case 0x0E:
+ status = POWER_SUPPLY_STATUS_CHARGING;
+ health = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case 0x0F:
+ status = POWER_SUPPLY_STATUS_FULL;
+ health = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case 0x10:
+ case 0x11:
+ case 0x12:
+ case 0x13:
+ case 0x14:
+ case 0x20:
+ case 0x21:
+ case 0x22:
+ case 0x23:
+ case 0x24:
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ break;
+ case 0x30:
+ case 0x31:
+ case 0x32:
+ case 0x40:
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ health = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case 0x7f:
+ default:
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ health = POWER_SUPPLY_HEALTH_DEAD;
+ break;
+ }
+
+ if (s)
+ *s = status;
+ if (h)
+ *h = health;
+
+ return ret;
+}
+
+static int get_chg_online(struct bd71828_power *pwr, int *chg_online)
+{
+ int r, ret;
+
+ ret = regmap_read(pwr->regmap, pwr->regs->dcin_stat, &r);
+ if (ret) {
+ dev_err(pwr->dev, "Failed to read DCIN status\n");
+ return ret;
+ }
+ *chg_online = ((r & BD7182x_MASK_DCIN_DET) != 0);
+
+ return 0;
+}
+
+static int get_bat_online(struct bd71828_power *pwr, int *bat_online)
+{
+ int r, ret;
+
+ ret = regmap_read(pwr->regmap, pwr->regs->bat_temp, &r);
+ if (ret) {
+ dev_err(pwr->dev, "Failed to read battery temperature\n");
+ return ret;
+ }
+ *bat_online = ((r & BD7182x_MASK_BAT_TEMP) != BAT_OPEN);
+
+ return 0;
+}
+
+static int bd71828_bat_inserted(struct bd71828_power *pwr)
+{
+ int ret, val;
+
+ ret = regmap_read(pwr->regmap, pwr->regs->conf, &val);
+ if (ret) {
+ dev_err(pwr->dev, "Failed to read CONF register\n");
+ return 0;
+ }
+ ret = val & BD7182x_MASK_CONF_PON;
+
+ if (ret)
+ regmap_update_bits(pwr->regmap, pwr->regs->conf,
+ BD7182x_MASK_CONF_PON, 0);
+
+ return ret;
+}
+
+static int bd71815_bat_inserted(struct bd71828_power *pwr)
+{
+ int ret, val;
+
+ ret = regmap_read(pwr->regmap, pwr->regs->conf, &val);
+ if (ret) {
+ dev_err(pwr->dev, "Failed to read CONF register\n");
+ return ret;
+ }
+
+ ret = !(val & BD71815_MASK_CONF_XSTB);
+ if (ret)
+ regmap_write(pwr->regmap, pwr->regs->conf, val |
+ BD71815_MASK_CONF_XSTB);
+
+ return ret;
+}
+
+static int bd71828_init_hardware(struct bd71828_power *pwr)
+{
+ int ret;
+
+ /* TODO: Collapse limit should come from device-tree ? */
+ ret = regmap_write(pwr->regmap, pwr->regs->dcin_collapse_limit,
+ BD7182x_DCIN_COLLAPSE_DEFAULT);
+ if (ret) {
+ dev_err(pwr->dev, "Failed to write DCIN collapse limit\n");
+ return ret;
+ }
+
+ ret = pwr->bat_inserted(pwr);
+ if (ret < 0)
+ return ret;
+
+ if (ret) {
+ /* WDT_FST auto set */
+ ret = regmap_update_bits(pwr->regmap, pwr->regs->chg_set1,
+ BD7182x_MASK_WDT_AUTO,
+ BD7182x_MASK_WDT_AUTO);
+ if (ret)
+ return ret;
+
+ ret = bd7182x_write16(pwr, pwr->regs->vbat_alm_limit_u,
+ VBAT_LOW_TH);
+ if (ret)
+ return ret;
+
+ /*
+ * On BD71815 "we mask the power-state" from relax detection.
+ * I am unsure what the impact of the power-state would be if
+ * we didn't - but this is what the vendor driver did - and
+ * that driver has been used in few projects so I just assume
+ * this is needed.
+ */
+ if (pwr->chip_type == ROHM_CHIP_TYPE_BD71815) {
+ ret = regmap_set_bits(pwr->regmap,
+ BD71815_REG_REX_CTRL_1,
+ REX_PMU_STATE_MASK);
+ if (ret)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int bd71828_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct bd71828_power *pwr = dev_get_drvdata(psy->dev.parent);
+ u32 vot;
+ u16 tmp;
+ int online;
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = get_chg_online(pwr, &online);
+ if (!ret)
+ val->intval = online;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = bd7182x_read16_himask(pwr, pwr->regs->vdcin,
+ BD7182x_MASK_VDCIN_U, &tmp);
+ if (ret)
+ return ret;
+
+ vot = tmp;
+ /* 5 milli volt steps */
+ val->intval = 5000 * vot;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int bd71828_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct bd71828_power *pwr = dev_get_drvdata(psy->dev.parent);
+ int ret = 0;
+ int status, health, tmp, curr, curr_avg, chg_en;
+
+ if (psp == POWER_SUPPLY_PROP_STATUS ||
+ psp == POWER_SUPPLY_PROP_HEALTH ||
+ psp == POWER_SUPPLY_PROP_CHARGE_TYPE)
+ ret = bd71828_charge_status(pwr, &status, &health);
+ else if (psp == POWER_SUPPLY_PROP_CURRENT_AVG ||
+ psp == POWER_SUPPLY_PROP_CURRENT_NOW)
+ ret = bd71828_get_current_ds_adc(pwr, &curr, &curr_avg);
+ if (ret)
+ return ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = status;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = health;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ ret = get_bat_online(pwr, &tmp);
+ if (!ret)
+ val->intval = tmp;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = bd71828_get_vbat(pwr, &tmp);
+ val->intval = tmp;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval = curr_avg;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = curr;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ val->intval = MAX_CURRENT_DEFAULT;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = pwr->get_temp(pwr, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
+ ret = regmap_read(pwr->regmap, pwr->regs->chg_en, &chg_en);
+ if (ret)
+ return ret;
+
+ val->intval = (chg_en & BD7182x_MASK_CHG_EN) ?
+ POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO :
+ POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int bd71828_battery_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct bd71828_power *pwr = dev_get_drvdata(psy->dev.parent);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
+ if (val->intval == POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO)
+ ret = regmap_update_bits(pwr->regmap, pwr->regs->chg_en,
+ BD7182x_MASK_CHG_EN,
+ BD7182x_MASK_CHG_EN);
+ else
+ ret = regmap_update_bits(pwr->regmap, pwr->regs->chg_en,
+ BD7182x_MASK_CHG_EN,
+ 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static int bd71828_battery_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/** @brief ac properties */
+static const enum power_supply_property bd71828_charger_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+static const enum power_supply_property bd71828_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
+ POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
+};
+
+/** @brief powers supplied by bd71828_ac */
+static char *bd71828_ac_supplied_to[] = {
+ BAT_NAME,
+};
+
+static const struct power_supply_desc bd71828_ac_desc = {
+ .name = AC_NAME,
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .properties = bd71828_charger_props,
+ .num_properties = ARRAY_SIZE(bd71828_charger_props),
+ .get_property = bd71828_charger_get_property,
+};
+
+static const struct power_supply_desc bd71828_bat_desc = {
+ .name = BAT_NAME,
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .charge_behaviours = BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO) |
+ BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE),
+ .properties = bd71828_battery_props,
+ .num_properties = ARRAY_SIZE(bd71828_battery_props),
+ .get_property = bd71828_battery_get_property,
+ .set_property = bd71828_battery_set_property,
+ .property_is_writeable = bd71828_battery_property_is_writeable,
+};
+
+#define RSENS_CURR 10000000LLU
+
+#define BD_ISR_NAME(name) \
+bd7181x_##name##_isr
+
+#define BD_ISR_BAT(name, print, run_gauge) \
+static irqreturn_t BD_ISR_NAME(name)(int irq, void *data) \
+{ \
+ struct bd71828_power *pwr = (struct bd71828_power *)data; \
+ \
+ dev_dbg(pwr->dev, "%s\n", print); \
+ power_supply_changed(pwr->bat); \
+ \
+ return IRQ_HANDLED; \
+}
+
+#define BD_ISR_AC(name, print, run_gauge) \
+static irqreturn_t BD_ISR_NAME(name)(int irq, void *data) \
+{ \
+ struct bd71828_power *pwr = (struct bd71828_power *)data; \
+ \
+ power_supply_changed(pwr->ac); \
+ dev_dbg(pwr->dev, "%s\n", print); \
+ power_supply_changed(pwr->bat); \
+ \
+ return IRQ_HANDLED; \
+}
+
+#define BD_ISR_DUMMY(name, print) \
+static irqreturn_t BD_ISR_NAME(name)(int irq, void *data) \
+{ \
+ struct bd71828_power *pwr = (struct bd71828_power *)data; \
+ \
+ dev_dbg(pwr->dev, "%s\n", print); \
+ \
+ return IRQ_HANDLED; \
+}
+
+BD_ISR_BAT(chg_state_changed, "CHG state changed", true)
+/* DCIN voltage changes */
+BD_ISR_AC(dcin_removed, "DCIN removed", true)
+BD_ISR_AC(clps_out, "DCIN voltage back to normal", true)
+BD_ISR_AC(clps_in, "DCIN voltage collapsed", false)
+BD_ISR_AC(dcin_ovp_res, "DCIN voltage normal", true)
+BD_ISR_AC(dcin_ovp_det, "DCIN OVER VOLTAGE", true)
+
+BD_ISR_DUMMY(dcin_mon_det, "DCIN voltage below threshold")
+BD_ISR_DUMMY(dcin_mon_res, "DCIN voltage above threshold")
+
+BD_ISR_DUMMY(vsys_uv_res, "VSYS under-voltage cleared")
+BD_ISR_DUMMY(vsys_uv_det, "VSYS under-voltage")
+BD_ISR_DUMMY(vsys_low_res, "'VSYS low' cleared")
+BD_ISR_DUMMY(vsys_low_det, "VSYS low")
+BD_ISR_DUMMY(vsys_mon_res, "VSYS mon - resumed")
+BD_ISR_DUMMY(vsys_mon_det, "VSYS mon - detected")
+BD_ISR_BAT(chg_wdg_temp, "charger temperature watchdog triggered", true)
+BD_ISR_BAT(chg_wdg, "charging watchdog triggered", true)
+BD_ISR_BAT(bat_removed, "Battery removed", true)
+BD_ISR_BAT(bat_det, "Battery detected", true)
+/* TODO: Verify the meaning of these interrupts */
+BD_ISR_BAT(rechg_det, "Recharging", true)
+BD_ISR_BAT(rechg_res, "Recharge ending", true)
+BD_ISR_DUMMY(temp_transit, "Temperature transition")
+BD_ISR_BAT(therm_rmv, "bd71815-therm-rmv", false)
+BD_ISR_BAT(therm_det, "bd71815-therm-det", true)
+BD_ISR_BAT(bat_dead, "bd71815-bat-dead", false)
+BD_ISR_BAT(bat_short_res, "bd71815-bat-short-res", true)
+BD_ISR_BAT(bat_short, "bd71815-bat-short-det", false)
+BD_ISR_BAT(bat_low_res, "bd71815-bat-low-res", true)
+BD_ISR_BAT(bat_low, "bd71815-bat-low-det", true)
+BD_ISR_BAT(bat_ov_res, "bd71815-bat-over-res", true)
+/* What should we do here? */
+BD_ISR_BAT(bat_ov, "bd71815-bat-over-det", false)
+BD_ISR_BAT(bat_mon_res, "bd71815-bat-mon-res", true)
+BD_ISR_BAT(bat_mon, "bd71815-bat-mon-det", true)
+BD_ISR_BAT(bat_cc_mon, "bd71815-bat-cc-mon2", false)
+BD_ISR_BAT(bat_oc1_res, "bd71815-bat-oc1-res", true)
+BD_ISR_BAT(bat_oc1, "bd71815-bat-oc1-det", false)
+BD_ISR_BAT(bat_oc2_res, "bd71815-bat-oc2-res", true)
+BD_ISR_BAT(bat_oc2, "bd71815-bat-oc2-det", false)
+BD_ISR_BAT(bat_oc3_res, "bd71815-bat-oc3-res", true)
+BD_ISR_BAT(bat_oc3, "bd71815-bat-oc3-det", false)
+BD_ISR_BAT(temp_bat_low_res, "bd71815-temp-bat-low-res", true)
+BD_ISR_BAT(temp_bat_low, "bd71815-temp-bat-low-det", true)
+BD_ISR_BAT(temp_bat_hi_res, "bd71815-temp-bat-hi-res", true)
+BD_ISR_BAT(temp_bat_hi, "bd71815-temp-bat-hi-det", true)
+
+static irqreturn_t bd7182x_dcin_removed(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ power_supply_changed(pwr->ac);
+ dev_dbg(pwr->dev, "DCIN removed\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd718x7_chg_done(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd7182x_dcin_detected(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "DCIN inserted\n");
+ power_supply_changed(pwr->ac);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_vbat_low_res(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "VBAT LOW Resumed\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_vbat_low_det(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "VBAT LOW Detected\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_temp_bat_hi_det(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_warn(pwr->dev, "Overtemp Detected\n");
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_temp_bat_hi_res(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "Overtemp Resumed\n");
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_temp_bat_low_det(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "Lowtemp Detected\n");
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_temp_bat_low_res(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "Lowtemp Resumed\n");
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_temp_vf_det(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "VF Detected\n");
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_temp_vf_res(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "VF Resumed\n");
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_temp_vf125_det(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "VF125 Detected\n");
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t bd71828_temp_vf125_res(int irq, void *data)
+{
+ struct bd71828_power *pwr = (struct bd71828_power *)data;
+
+ dev_dbg(pwr->dev, "VF125 Resumed\n");
+ power_supply_changed(pwr->bat);
+
+ return IRQ_HANDLED;
+}
+
+struct bd7182x_irq_res {
+ const char *name;
+ irq_handler_t handler;
+};
+
+#define BDIRQ(na, hn) { .name = (na), .handler = (hn) }
+
+static int bd7182x_get_irqs(struct platform_device *pdev,
+ struct bd71828_power *pwr)
+{
+ int i, irq, ret;
+ static const struct bd7182x_irq_res bd71815_irqs[] = {
+ BDIRQ("bd71815-dcin-rmv", BD_ISR_NAME(dcin_removed)),
+ BDIRQ("bd71815-dcin-clps-out", BD_ISR_NAME(clps_out)),
+ BDIRQ("bd71815-dcin-clps-in", BD_ISR_NAME(clps_in)),
+ BDIRQ("bd71815-dcin-ovp-res", BD_ISR_NAME(dcin_ovp_res)),
+ BDIRQ("bd71815-dcin-ovp-det", BD_ISR_NAME(dcin_ovp_det)),
+ BDIRQ("bd71815-dcin-mon-res", BD_ISR_NAME(dcin_mon_res)),
+ BDIRQ("bd71815-dcin-mon-det", BD_ISR_NAME(dcin_mon_det)),
+
+ BDIRQ("bd71815-vsys-uv-res", BD_ISR_NAME(vsys_uv_res)),
+ BDIRQ("bd71815-vsys-uv-det", BD_ISR_NAME(vsys_uv_det)),
+ BDIRQ("bd71815-vsys-low-res", BD_ISR_NAME(vsys_low_res)),
+ BDIRQ("bd71815-vsys-low-det", BD_ISR_NAME(vsys_low_det)),
+ BDIRQ("bd71815-vsys-mon-res", BD_ISR_NAME(vsys_mon_res)),
+ BDIRQ("bd71815-vsys-mon-det", BD_ISR_NAME(vsys_mon_det)),
+ BDIRQ("bd71815-chg-wdg-temp", BD_ISR_NAME(chg_wdg_temp)),
+ BDIRQ("bd71815-chg-wdg", BD_ISR_NAME(chg_wdg)),
+ BDIRQ("bd71815-rechg-det", BD_ISR_NAME(rechg_det)),
+ BDIRQ("bd71815-rechg-res", BD_ISR_NAME(rechg_res)),
+ BDIRQ("bd71815-ranged-temp-transit", BD_ISR_NAME(temp_transit)),
+ BDIRQ("bd71815-chg-state-change", BD_ISR_NAME(chg_state_changed)),
+ BDIRQ("bd71815-bat-temp-normal", bd71828_temp_bat_hi_res),
+ BDIRQ("bd71815-bat-temp-erange", bd71828_temp_bat_hi_det),
+ BDIRQ("bd71815-bat-rmv", BD_ISR_NAME(bat_removed)),
+ BDIRQ("bd71815-bat-det", BD_ISR_NAME(bat_det)),
+
+ /* Add ISRs for these */
+ BDIRQ("bd71815-therm-rmv", BD_ISR_NAME(therm_rmv)),
+ BDIRQ("bd71815-therm-det", BD_ISR_NAME(therm_det)),
+ BDIRQ("bd71815-bat-dead", BD_ISR_NAME(bat_dead)),
+ BDIRQ("bd71815-bat-short-res", BD_ISR_NAME(bat_short_res)),
+ BDIRQ("bd71815-bat-short-det", BD_ISR_NAME(bat_short)),
+ BDIRQ("bd71815-bat-low-res", BD_ISR_NAME(bat_low_res)),
+ BDIRQ("bd71815-bat-low-det", BD_ISR_NAME(bat_low)),
+ BDIRQ("bd71815-bat-over-res", BD_ISR_NAME(bat_ov_res)),
+ BDIRQ("bd71815-bat-over-det", BD_ISR_NAME(bat_ov)),
+ BDIRQ("bd71815-bat-mon-res", BD_ISR_NAME(bat_mon_res)),
+ BDIRQ("bd71815-bat-mon-det", BD_ISR_NAME(bat_mon)),
+ /* cc-mon 1 & 3 ? */
+ BDIRQ("bd71815-bat-cc-mon2", BD_ISR_NAME(bat_cc_mon)),
+ BDIRQ("bd71815-bat-oc1-res", BD_ISR_NAME(bat_oc1_res)),
+ BDIRQ("bd71815-bat-oc1-det", BD_ISR_NAME(bat_oc1)),
+ BDIRQ("bd71815-bat-oc2-res", BD_ISR_NAME(bat_oc2_res)),
+ BDIRQ("bd71815-bat-oc2-det", BD_ISR_NAME(bat_oc2)),
+ BDIRQ("bd71815-bat-oc3-res", BD_ISR_NAME(bat_oc3_res)),
+ BDIRQ("bd71815-bat-oc3-det", BD_ISR_NAME(bat_oc3)),
+ BDIRQ("bd71815-temp-bat-low-res", BD_ISR_NAME(temp_bat_low_res)),
+ BDIRQ("bd71815-temp-bat-low-det", BD_ISR_NAME(temp_bat_low)),
+ BDIRQ("bd71815-temp-bat-hi-res", BD_ISR_NAME(temp_bat_hi_res)),
+ BDIRQ("bd71815-temp-bat-hi-det", BD_ISR_NAME(temp_bat_hi)),
+ /*
+ * TODO: add rest of the IRQs and re-check the handling.
+ * Check the bd71815-bat-cc-mon1, bd71815-bat-cc-mon3,
+ * bd71815-bat-low-res, bd71815-bat-low-det,
+ * bd71815-bat-hi-res, bd71815-bat-hi-det.
+ */
+ };
+ static const struct bd7182x_irq_res bd71828_irqs[] = {
+ BDIRQ("bd71828-chg-done", bd718x7_chg_done),
+ BDIRQ("bd71828-pwr-dcin-in", bd7182x_dcin_detected),
+ BDIRQ("bd71828-pwr-dcin-out", bd7182x_dcin_removed),
+ BDIRQ("bd71828-vbat-normal", bd71828_vbat_low_res),
+ BDIRQ("bd71828-vbat-low", bd71828_vbat_low_det),
+ BDIRQ("bd71828-btemp-hi", bd71828_temp_bat_hi_det),
+ BDIRQ("bd71828-btemp-cool", bd71828_temp_bat_hi_res),
+ BDIRQ("bd71828-btemp-lo", bd71828_temp_bat_low_det),
+ BDIRQ("bd71828-btemp-warm", bd71828_temp_bat_low_res),
+ BDIRQ("bd71828-temp-hi", bd71828_temp_vf_det),
+ BDIRQ("bd71828-temp-norm", bd71828_temp_vf_res),
+ BDIRQ("bd71828-temp-125-over", bd71828_temp_vf125_det),
+ BDIRQ("bd71828-temp-125-under", bd71828_temp_vf125_res),
+ };
+ int num_irqs;
+ const struct bd7182x_irq_res *irqs;
+
+ switch (pwr->chip_type) {
+ case ROHM_CHIP_TYPE_BD71828:
+ irqs = &bd71828_irqs[0];
+ num_irqs = ARRAY_SIZE(bd71828_irqs);
+ break;
+ case ROHM_CHIP_TYPE_BD71815:
+ irqs = &bd71815_irqs[0];
+ num_irqs = ARRAY_SIZE(bd71815_irqs);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ for (i = 0; i < num_irqs; i++) {
+ irq = platform_get_irq_byname(pdev, irqs[i].name);
+
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ irqs[i].handler, 0,
+ irqs[i].name, pwr);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
+#define RSENS_DEFAULT_30MOHM 30000 /* 30 mOhm in uOhms*/
+
+static int bd7182x_get_rsens(struct bd71828_power *pwr)
+{
+ u64 tmp = RSENS_CURR;
+ int rsens_ohm = RSENS_DEFAULT_30MOHM;
+ struct fwnode_handle *node = NULL;
+
+ if (pwr->dev->parent)
+ node = dev_fwnode(pwr->dev->parent);
+
+ if (node) {
+ int ret;
+ u32 rs;
+
+ ret = fwnode_property_read_u32(node,
+ "rohm,charger-sense-resistor-micro-ohms",
+ &rs);
+ if (ret) {
+ if (ret == -EINVAL) {
+ rs = RSENS_DEFAULT_30MOHM;
+ } else {
+ dev_err(pwr->dev, "Bad RSENS dt property\n");
+ return ret;
+ }
+ }
+ if (!rs) {
+ dev_err(pwr->dev, "Bad RSENS value\n");
+ return -EINVAL;
+ }
+
+ rsens_ohm = (int)rs;
+ }
+
+ /* Reg val to uA */
+ do_div(tmp, rsens_ohm);
+
+ pwr->curr_factor = tmp;
+ pwr->rsens = rsens_ohm;
+ dev_dbg(pwr->dev, "Setting rsens to %u micro ohm\n", pwr->rsens);
+ dev_dbg(pwr->dev, "Setting curr-factor to %u\n", pwr->curr_factor);
+
+ return 0;
+}
+
+static int bd71828_power_probe(struct platform_device *pdev)
+{
+ struct bd71828_power *pwr;
+ struct power_supply_config ac_cfg = {};
+ struct power_supply_config bat_cfg = {};
+ int ret;
+ struct regmap *regmap;
+
+ regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!regmap) {
+ dev_err(&pdev->dev, "No parent regmap\n");
+ return -EINVAL;
+ }
+
+ pwr = devm_kzalloc(&pdev->dev, sizeof(*pwr), GFP_KERNEL);
+ if (!pwr)
+ return -ENOMEM;
+
+ pwr->regmap = regmap;
+ pwr->dev = &pdev->dev;
+ pwr->chip_type = platform_get_device_id(pdev)->driver_data;
+
+ switch (pwr->chip_type) {
+ case ROHM_CHIP_TYPE_BD71828:
+ pwr->bat_inserted = bd71828_bat_inserted;
+ pwr->get_temp = bd71828_get_temp;
+ pwr->regs = &pwr_regs_bd71828;
+ break;
+ case ROHM_CHIP_TYPE_BD71815:
+ pwr->bat_inserted = bd71815_bat_inserted;
+ pwr->get_temp = bd71815_get_temp;
+ pwr->regs = &pwr_regs_bd71815;
+ break;
+ default:
+ dev_err(pwr->dev, "Unknown PMIC\n");
+ return -EINVAL;
+ }
+
+ ret = bd7182x_get_rsens(pwr);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret, "sense resistor missing\n");
+
+ dev_set_drvdata(&pdev->dev, pwr);
+ bd71828_init_hardware(pwr);
+
+ bat_cfg.drv_data = pwr;
+ bat_cfg.fwnode = dev_fwnode(&pdev->dev);
+
+ ac_cfg.supplied_to = bd71828_ac_supplied_to;
+ ac_cfg.num_supplicants = ARRAY_SIZE(bd71828_ac_supplied_to);
+ ac_cfg.drv_data = pwr;
+
+ pwr->ac = devm_power_supply_register(&pdev->dev, &bd71828_ac_desc,
+ &ac_cfg);
+ if (IS_ERR(pwr->ac))
+ return dev_err_probe(&pdev->dev, PTR_ERR(pwr->ac),
+ "failed to register ac\n");
+
+ pwr->bat = devm_power_supply_register(&pdev->dev, &bd71828_bat_desc,
+ &bat_cfg);
+ if (IS_ERR(pwr->bat))
+ return dev_err_probe(&pdev->dev, PTR_ERR(pwr->bat),
+ "failed to register bat\n");
+
+ ret = bd7182x_get_irqs(pdev, pwr);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret, "failed to request IRQs");
+
+ /* Configure wakeup capable */
+ device_set_wakeup_capable(pwr->dev, 1);
+ device_set_wakeup_enable(pwr->dev, 1);
+
+ return 0;
+}
+
+static const struct platform_device_id bd71828_charger_id[] = {
+ { "bd71815-power", ROHM_CHIP_TYPE_BD71815 },
+ { "bd71828-power", ROHM_CHIP_TYPE_BD71828 },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, bd71828_charger_id);
+
+static struct platform_driver bd71828_power_driver = {
+ .driver = {
+ .name = "bd718xx-power",
+ },
+ .probe = bd71828_power_probe,
+ .id_table = bd71828_charger_id,
+};
+
+module_platform_driver(bd71828_power_driver);
+
+MODULE_AUTHOR("Cong Pham <cpham2403@gmail.com>");
+MODULE_DESCRIPTION("ROHM BD718(15/28/78) PMIC Battery Charger driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/cw2015_battery.c b/drivers/power/supply/cw2015_battery.c
index 2263d5d3448f..0806abea2372 100644
--- a/drivers/power/supply/cw2015_battery.c
+++ b/drivers/power/supply/cw2015_battery.c
@@ -699,7 +699,13 @@ static int cw_bat_probe(struct i2c_client *client)
if (!cw_bat->battery_workqueue)
return -ENOMEM;
- devm_delayed_work_autocancel(&client->dev, &cw_bat->battery_delay_work, cw_bat_work);
+ ret = devm_delayed_work_autocancel(&client->dev, &cw_bat->battery_delay_work, cw_bat_work);
+ if (ret) {
+ dev_err_probe(&client->dev, ret,
+ "Failed to register delayed work\n");
+ return ret;
+ }
+
queue_delayed_work(cw_bat->battery_workqueue,
&cw_bat->battery_delay_work, msecs_to_jiffies(10));
return 0;
diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
index c1640bc6accd..48453508688a 100644
--- a/drivers/power/supply/max17040_battery.c
+++ b/drivers/power/supply/max17040_battery.c
@@ -388,6 +388,7 @@ static int max17040_get_property(struct power_supply *psy,
union power_supply_propval *val)
{
struct max17040_chip *chip = power_supply_get_drvdata(psy);
+ int ret;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
@@ -410,7 +411,10 @@ static int max17040_get_property(struct power_supply *psy,
if (!chip->channel_temp)
return -ENODATA;
- iio_read_channel_processed(chip->channel_temp, &val->intval);
+ ret = iio_read_channel_processed(chip->channel_temp, &val->intval);
+ if (ret)
+ return ret;
+
val->intval /= 100; /* Convert from milli- to deci-degree */
break;
diff --git a/drivers/power/supply/max77705_charger.c b/drivers/power/supply/max77705_charger.c
index b1a227bf72e2..5dd02f658f5b 100644
--- a/drivers/power/supply/max77705_charger.c
+++ b/drivers/power/supply/max77705_charger.c
@@ -40,6 +40,39 @@ static enum power_supply_property max77705_charger_props[] = {
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
};
+static irqreturn_t max77705_aicl_irq(int irq, void *irq_drv_data)
+{
+ struct max77705_charger_data *chg = irq_drv_data;
+ unsigned int regval, irq_status;
+ int err;
+
+ err = regmap_read(chg->regmap, MAX77705_CHG_REG_INT_OK, &irq_status);
+ if (err < 0)
+ return IRQ_HANDLED;
+
+ // irq is fiered at the end of current decrease sequence too
+ // early check AICL_I bit to guard against that excess irq call
+ while (!(irq_status & BIT(MAX77705_AICL_I))) {
+ err = regmap_field_read(chg->rfield[MAX77705_CHG_CHGIN_LIM], &regval);
+ if (err < 0)
+ return IRQ_HANDLED;
+
+ regval--;
+
+ err = regmap_field_write(chg->rfield[MAX77705_CHG_CHGIN_LIM], regval);
+ if (err < 0)
+ return IRQ_HANDLED;
+
+ msleep(AICL_WORK_DELAY_MS);
+
+ err = regmap_read(chg->regmap, MAX77705_CHG_REG_INT_OK, &irq_status);
+ if (err < 0)
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_HANDLED;
+}
+
static irqreturn_t max77705_chgin_irq(int irq, void *irq_drv_data)
{
struct max77705_charger_data *chg = irq_drv_data;
@@ -60,7 +93,7 @@ static const struct regmap_irq max77705_charger_irqs[] = {
REGMAP_IRQ_REG_LINE(MAX77705_AICL_I, BITS_PER_BYTE),
};
-static struct regmap_irq_chip max77705_charger_irq_chip = {
+static const struct regmap_irq_chip max77705_charger_irq_chip = {
.name = "max77705-charger",
.status_base = MAX77705_CHG_REG_INT,
.mask_base = MAX77705_CHG_REG_INT_MASK,
@@ -567,6 +600,7 @@ static int max77705_charger_probe(struct i2c_client *i2c)
{
struct power_supply_config pscfg = {};
struct max77705_charger_data *chg;
+ struct regmap_irq_chip *chip_desc;
struct device *dev;
struct regmap_irq_chip_data *irq_data;
int ret;
@@ -580,6 +614,13 @@ static int max77705_charger_probe(struct i2c_client *i2c)
chg->dev = dev;
i2c_set_clientdata(i2c, chg);
+ chip_desc = devm_kmemdup(dev, &max77705_charger_irq_chip,
+ sizeof(max77705_charger_irq_chip),
+ GFP_KERNEL);
+ if (!chip_desc)
+ return -ENOMEM;
+ chip_desc->irq_drv_data = chg;
+
chg->regmap = devm_regmap_init_i2c(i2c, &max77705_chg_regmap_config);
if (IS_ERR(chg->regmap))
return PTR_ERR(chg->regmap);
@@ -599,11 +640,9 @@ static int max77705_charger_probe(struct i2c_client *i2c)
if (IS_ERR(chg->psy_chg))
return PTR_ERR(chg->psy_chg);
- max77705_charger_irq_chip.irq_drv_data = chg;
ret = devm_regmap_add_irq_chip(chg->dev, chg->regmap, i2c->irq,
IRQF_ONESHOT, 0,
- &max77705_charger_irq_chip,
- &irq_data);
+ chip_desc, &irq_data);
if (ret)
return dev_err_probe(dev, ret, "failed to add irq chip\n");
@@ -632,6 +671,15 @@ static int max77705_charger_probe(struct i2c_client *i2c)
goto destroy_wq;
}
+ ret = devm_request_threaded_irq(dev, regmap_irq_get_virq(irq_data, MAX77705_AICL_I),
+ NULL, max77705_aicl_irq,
+ IRQF_TRIGGER_NONE,
+ "aicl-irq", chg);
+ if (ret) {
+ dev_err_probe(dev, ret, "Failed to Request aicl IRQ\n");
+ goto destroy_wq;
+ }
+
ret = max77705_charger_enable(chg);
if (ret) {
dev_err_probe(dev, ret, "failed to enable charge\n");
diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c
index 3c2837ef3461..c8028606bba0 100644
--- a/drivers/power/supply/qcom_battmgr.c
+++ b/drivers/power/supply/qcom_battmgr.c
@@ -678,12 +678,7 @@ static int qcom_battmgr_set_charge_start_threshold(struct qcom_battmgr *battmgr,
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;
- }
+ start_soc = clamp(start_soc, CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX);
/*
* If the new start threshold is larger than the old end threshold,
@@ -716,12 +711,7 @@ static int qcom_battmgr_set_charge_end_threshold(struct qcom_battmgr *battmgr, i
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;
- }
+ end_soc = clamp(end_soc, CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX);
if (battmgr->info.charge_ctrl_start && end_soc > battmgr->info.charge_ctrl_start)
delta_soc = end_soc - battmgr->info.charge_ctrl_start;
diff --git a/drivers/power/supply/rt5033_charger.c b/drivers/power/supply/rt5033_charger.c
index 2fdc58439707..de724f23e453 100644
--- a/drivers/power/supply/rt5033_charger.c
+++ b/drivers/power/supply/rt5033_charger.c
@@ -701,6 +701,8 @@ static int rt5033_charger_probe(struct platform_device *pdev)
np_conn = of_parse_phandle(pdev->dev.of_node, "richtek,usb-connector", 0);
np_edev = of_get_parent(np_conn);
charger->edev = extcon_find_edev_by_node(np_edev);
+ of_node_put(np_edev);
+ of_node_put(np_conn);
if (IS_ERR(charger->edev)) {
dev_warn(charger->dev, "no extcon device found in device-tree\n");
goto out;
diff --git a/drivers/power/supply/rt9467-charger.c b/drivers/power/supply/rt9467-charger.c
index fe773dd8b404..44c26fb37a77 100644
--- a/drivers/power/supply/rt9467-charger.c
+++ b/drivers/power/supply/rt9467-charger.c
@@ -376,7 +376,7 @@ static int rt9467_set_value_from_ranges(struct rt9467_chg_data *data,
if (rsel == RT9467_RANGE_VMIVR) {
ret = linear_range_get_selector_high(range, value, &sel, &found);
if (ret)
- value = range->max_sel;
+ sel = range->max_sel;
} else {
linear_range_get_selector_within(range, value, &sel);
}
@@ -588,6 +588,10 @@ static int rt9467_run_aicl(struct rt9467_chg_data *data)
aicl_vth = mivr_vth + RT9467_AICLVTH_GAP_uV;
ret = rt9467_set_value_from_ranges(data, F_AICL_VTH,
RT9467_RANGE_AICL_VTH, aicl_vth);
+ if (ret) {
+ dev_err(data->dev, "Failed to set AICL VTH\n");
+ return ret;
+ }
/* Trigger AICL function */
ret = regmap_field_write(data->rm_field[F_AICL_MEAS], 1);
diff --git a/drivers/power/supply/rt9756.c b/drivers/power/supply/rt9756.c
new file mode 100644
index 000000000000..f254527be653
--- /dev/null
+++ b/drivers/power/supply/rt9756.c
@@ -0,0 +1,955 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (C) 2025 Richtek Technology Corp.
+//
+// Authors: ChiYuan Huang <cy_huang@richtek.com>
+
+#include <linux/atomic.h>
+#include <linux/cleanup.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/linear_range.h>
+#include <linux/interrupt.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/power_supply.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/sysfs.h>
+#include <linux/util_macros.h>
+
+#define RT9756_REG_INTFLAG1 0x0B
+#define RT9756_REG_INTFLAG2 0x0D
+#define RT9756_REG_INTFLAG3 0x0F
+#define RT9756_REG_ADCCTL 0x11
+#define RT9756_REG_VBUSADC 0x12
+#define RT9756_REG_BC12FLAG 0x45
+#define RT9756_REG_INTFLAG4 0x49
+
+/* Flag1 */
+#define RT9756_EVT_BUSOVP BIT(3)
+#define RT9756_EVT_BUSOCP BIT(2)
+#define RT9756_EVT_BUSUCP BIT(0)
+/* Flag2 */
+#define RT9756_EVT_BATOVP BIT(7)
+#define RT9756_EVT_BATOCP BIT(6)
+#define RT9756_EVT_TDIEOTP BIT(3)
+#define RT9756_EVT_VBUSLOW_ERR BIT(2)
+#define RT9756_EVT_VAC_INSERT BIT(0)
+/* Flag3 */
+#define RT9756_EVT_WDT BIT(5)
+#define RT9756_EVT_VAC_UVLO BIT(4)
+/* ADCCTL */
+#define RT9756_ADCEN_MASK BIT(7)
+#define RT9756_ADCONCE_MASK BIT(6)
+/* Bc12_flag */
+#define RT9756_EVT_BC12_DONE BIT(3)
+/* Flag4 */
+#define RT9756_EVT_OUTOVP BIT(0)
+
+#define RICHTEK_DEVID 7
+#define RT9756_REVID 0
+#define RT9756A_REVID 1
+#define RT9757_REVID 2
+#define RT9757A_REVID 3
+#define RT9756_ADC_CONVTIME 1200
+#define RT9756_ADC_MAXWAIT 16000
+
+enum rt9756_model {
+ MODEL_RT9756 = 0,
+ MODEL_RT9757,
+ MODEL_RT9770,
+ MODEL_MAX
+};
+
+enum rt9756_adc_chan {
+ ADC_VBUS = 0,
+ ADC_IBUS,
+ ADC_VBAT,
+ ADC_IBAT,
+ ADC_TDIE,
+ ADC_MAX_CHANNEL
+};
+
+enum rt9756_usb_type {
+ USB_NO_VBUS = 0,
+ USB_SDP = 2,
+ USB_NSTD,
+ USB_DCP,
+ USB_CDP,
+ MAX_USB_TYPE
+};
+
+enum rt9756_fields {
+ F_VBATOVP = 0,
+ F_VBATOVP_EN,
+ F_IBATOCP,
+ F_IBATOCP_EN,
+ F_VBUSOVP,
+ F_VBUSOVP_EN,
+ F_IBUSOCP,
+ F_IBUSOCP_EN,
+ F_SWITCHING,
+ F_REG_RST,
+ F_CHG_EN,
+ F_OP_MODE,
+ F_WDT_DIS,
+ F_WDT_TMR,
+ F_DEV_ID,
+ F_BC12_EN,
+ F_USB_STATE,
+ F_VBUS_STATE,
+ F_IBAT_RSEN,
+ F_REVISION,
+ F_MAX_FIELD
+};
+
+enum rt9756_ranges {
+ R_VBATOVP = 0,
+ R_IBATOCP,
+ R_VBUSOVP,
+ R_IBUSOCP,
+ R_MAX_RANGE
+};
+
+static const struct reg_field rt9756_chg_fields[F_MAX_FIELD] = {
+ [F_VBATOVP] = REG_FIELD(0x08, 0, 4),
+ [F_VBATOVP_EN] = REG_FIELD(0x08, 7, 7),
+ [F_IBATOCP] = REG_FIELD(0x09, 0, 5),
+ [F_IBATOCP_EN] = REG_FIELD(0x09, 7, 7),
+ [F_VBUSOVP] = REG_FIELD(0x06, 0, 5),
+ [F_VBUSOVP_EN] = REG_FIELD(0x06, 7, 7),
+ [F_IBUSOCP] = REG_FIELD(0x07, 0, 4),
+ [F_IBUSOCP_EN] = REG_FIELD(0x07, 5, 5),
+ [F_SWITCHING] = REG_FIELD(0x5c, 7, 7),
+ [F_REG_RST] = REG_FIELD(0x00, 7, 7),
+ [F_CHG_EN] = REG_FIELD(0x00, 6, 6),
+ [F_OP_MODE] = REG_FIELD(0x00, 5, 5),
+ [F_WDT_DIS] = REG_FIELD(0x00, 3, 3),
+ [F_WDT_TMR] = REG_FIELD(0x00, 0, 2),
+ [F_DEV_ID] = REG_FIELD(0x03, 0, 3),
+ [F_BC12_EN] = REG_FIELD(0x44, 7, 7),
+ [F_USB_STATE] = REG_FIELD(0x46, 5, 7),
+ [F_VBUS_STATE] = REG_FIELD(0x4c, 0, 0),
+ [F_IBAT_RSEN] = REG_FIELD(0x5e, 0, 1),
+ [F_REVISION] = REG_FIELD(0x62, 0, 1),
+};
+
+static const struct reg_field rt9770_chg_fields[F_MAX_FIELD] = {
+ [F_VBATOVP] = REG_FIELD(0x08, 0, 4),
+ [F_VBATOVP_EN] = REG_FIELD(0x08, 7, 7),
+ [F_IBATOCP] = REG_FIELD(0x09, 0, 5),
+ [F_IBATOCP_EN] = REG_FIELD(0x09, 7, 7),
+ [F_VBUSOVP] = REG_FIELD(0x06, 0, 5),
+ [F_VBUSOVP_EN] = REG_FIELD(0x06, 7, 7),
+ [F_IBUSOCP] = REG_FIELD(0x07, 0, 4),
+ [F_IBUSOCP_EN] = REG_FIELD(0x07, 5, 5),
+ [F_SWITCHING] = REG_FIELD(0x5c, 7, 7),
+ [F_REG_RST] = REG_FIELD(0x00, 7, 7),
+ [F_CHG_EN] = REG_FIELD(0x00, 6, 6),
+ [F_OP_MODE] = REG_FIELD(0x00, 5, 5),
+ [F_WDT_DIS] = REG_FIELD(0x00, 3, 3),
+ [F_WDT_TMR] = REG_FIELD(0x00, 0, 2),
+ [F_DEV_ID] = REG_FIELD(0x60, 0, 3),
+ [F_BC12_EN] = REG_FIELD(0x03, 7, 7),
+ [F_USB_STATE] = REG_FIELD(0x02, 5, 7),
+ [F_VBUS_STATE] = REG_FIELD(0x4c, 0, 0),
+ [F_IBAT_RSEN] = REG_FIELD(0x5e, 0, 1),
+ [F_REVISION] = REG_FIELD(0x62, 3, 7),
+};
+
+/* All converted to microvolt or microamp */
+static const struct linear_range rt9756_chg_ranges[R_MAX_RANGE] = {
+ LINEAR_RANGE_IDX(R_VBATOVP, 4200000, 0, 31, 25000),
+ LINEAR_RANGE_IDX(R_IBATOCP, 2000000, 0, 63, 100000),
+ LINEAR_RANGE_IDX(R_VBUSOVP, 3000000, 0, 63, 50000),
+ LINEAR_RANGE_IDX(R_IBUSOCP, 1000000, 0, 31, 250000),
+};
+
+struct charger_event {
+ unsigned int flag1;
+ unsigned int flag2;
+ unsigned int flag3;
+ unsigned int flag4;
+};
+
+struct rt9756_data {
+ struct device *dev;
+ struct regmap *regmap;
+ struct regmap_field *rm_fields[F_MAX_FIELD];
+ struct power_supply *psy;
+ struct power_supply *bat_psy;
+ struct mutex adc_lock;
+ struct power_supply_desc psy_desc;
+ struct power_supply_desc bat_psy_desc;
+ struct charger_event chg_evt;
+ unsigned int rg_resistor;
+ unsigned int real_resistor;
+ enum rt9756_model model;
+ atomic_t usb_type;
+};
+
+struct rt975x_dev_data {
+ const struct regmap_config *regmap_config;
+ const struct reg_field *reg_fields;
+ const struct reg_sequence *init_regs;
+ size_t num_init_regs;
+ int (*check_device_model)(struct rt9756_data *data);
+};
+
+static int rt9756_get_value_field_range(struct rt9756_data *data, enum rt9756_fields en_field,
+ enum rt9756_fields field, enum rt9756_ranges rsel, int *val)
+{
+ const struct linear_range *range = rt9756_chg_ranges + rsel;
+ unsigned int enable, selector, value;
+ int ret;
+
+ ret = regmap_field_read(data->rm_fields[en_field], &enable);
+ if (ret)
+ return ret;
+
+ if (!enable) {
+ *val = 0;
+ return 0;
+ }
+
+ ret = regmap_field_read(data->rm_fields[field], &selector);
+ if (ret)
+ return ret;
+
+ ret = linear_range_get_value(range, selector, &value);
+ if (ret)
+ return ret;
+
+ *val = (int)value;
+
+ return 0;
+}
+
+static int rt9756_set_value_field_range(struct rt9756_data *data, enum rt9756_fields en_field,
+ enum rt9756_fields field, enum rt9756_ranges rsel, int val)
+{
+ const struct linear_range *range = rt9756_chg_ranges + rsel;
+ unsigned int selector, value;
+ int ret;
+
+ if (!val)
+ return regmap_field_write(data->rm_fields[en_field], 0);
+
+ value = (unsigned int)val;
+ linear_range_get_selector_within(range, value, &selector);
+ ret = regmap_field_write(data->rm_fields[field], selector);
+ if (ret)
+ return ret;
+
+ return regmap_field_write(data->rm_fields[en_field], 1);
+}
+
+static int rt9756_get_adc(struct rt9756_data *data, enum rt9756_adc_chan chan,
+ int *val)
+{
+ struct regmap *regmap = data->regmap;
+ unsigned int reg_addr = RT9756_REG_VBUSADC + chan * 2;
+ unsigned int mask = RT9756_ADCEN_MASK | RT9756_ADCONCE_MASK;
+ unsigned int shift = 0, adc_cntl;
+ __be16 raws;
+ int scale, offset = 0, ret;
+
+ guard(mutex)(&data->adc_lock);
+
+ ret = regmap_update_bits(regmap, RT9756_REG_ADCCTL, mask, mask);
+ if (ret)
+ return ret;
+
+ ret = regmap_read_poll_timeout(regmap, RT9756_REG_ADCCTL, adc_cntl,
+ !(adc_cntl & RT9756_ADCEN_MASK),
+ RT9756_ADC_CONVTIME, RT9756_ADC_MAXWAIT);
+ if (ret && ret != -ETIMEDOUT)
+ return ret;
+
+ ret = regmap_raw_read(regmap, reg_addr, &raws, sizeof(raws));
+ if (ret)
+ return ret;
+
+ /*
+ * TDIE LSB 1'c, others LSB 1000uV or 1000uA.
+ * Rsense ratio is needed for IBAT channel
+ */
+ if (chan == ADC_TDIE) {
+ scale = 10;
+ shift = 8;
+ offset = -40;
+ } else if (chan == ADC_IBAT)
+ scale = 1000 * data->rg_resistor / data->real_resistor;
+ else
+ scale = 1000;
+
+ *val = ((be16_to_cpu(raws) >> shift) + offset) * scale;
+
+ return regmap_update_bits(regmap, RT9756_REG_ADCCTL, mask, 0);
+}
+
+static int rt9756_get_switching_state(struct rt9756_data *data, int *status)
+{
+ unsigned int switching_state;
+ int ret;
+
+ ret = regmap_field_read(data->rm_fields[F_SWITCHING], &switching_state);
+ if (ret)
+ return ret;
+
+ if (switching_state)
+ *status = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+
+ return 0;
+}
+
+static int rt9756_get_charger_health(struct rt9756_data *data)
+{
+ struct charger_event *evt = &data->chg_evt;
+
+ if (evt->flag2 & RT9756_EVT_VBUSLOW_ERR)
+ return POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
+
+ if (evt->flag1 & RT9756_EVT_BUSOVP || evt->flag2 & RT9756_EVT_BATOVP ||
+ evt->flag4 & RT9756_EVT_OUTOVP)
+ return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+
+ if (evt->flag1 & RT9756_EVT_BUSOCP || evt->flag2 & RT9756_EVT_BATOCP)
+ return POWER_SUPPLY_HEALTH_OVERCURRENT;
+
+ if (evt->flag1 & RT9756_EVT_BUSUCP)
+ return POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+
+ if (evt->flag2 & RT9756_EVT_TDIEOTP)
+ return POWER_SUPPLY_HEALTH_OVERHEAT;
+
+ if (evt->flag3 & RT9756_EVT_WDT)
+ return POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE;
+
+ return POWER_SUPPLY_HEALTH_GOOD;
+}
+
+static int rt9756_get_charger_online(struct rt9756_data *data, int *val)
+{
+ unsigned int online;
+ int ret;
+
+ ret = regmap_field_read(data->rm_fields[F_VBUS_STATE], &online);
+ if (ret)
+ return ret;
+
+ *val = !!online;
+ return 0;
+}
+
+static int rt9756_get_vbus_ovp(struct rt9756_data *data, int *val)
+{
+ unsigned int opmode;
+ int ovpval, ret;
+
+ /* operating mode -> 0 bypass, 1 div2 */
+ ret = regmap_field_read(data->rm_fields[F_OP_MODE], &opmode);
+ if (ret)
+ return ret;
+
+ ret = rt9756_get_value_field_range(data, F_VBUSOVP_EN, F_VBUSOVP, R_VBUSOVP, &ovpval);
+ if (ret)
+ return ret;
+
+ *val = opmode ? ovpval * 2 : ovpval;
+ return 0;
+}
+
+static int rt9756_set_vbus_ovp(struct rt9756_data *data, int val)
+{
+ unsigned int opmode;
+ int ret;
+
+ /* operating mode -> 0 bypass, 1 div2 */
+ ret = regmap_field_read(data->rm_fields[F_OP_MODE], &opmode);
+ if (ret)
+ return ret;
+
+ return rt9756_set_value_field_range(data, F_VBUSOVP_EN, F_VBUSOVP, R_VBUSOVP,
+ opmode ? val / 2 : val);
+}
+
+static const char * const rt9756_manufacturer = "Richtek Technology Corp.";
+static const char * const rt9756_model[MODEL_MAX] = { "RT9756", "RT9757", "RT9770" };
+
+static int rt9756_psy_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct rt9756_data *data = power_supply_get_drvdata(psy);
+ int *pval = &val->intval;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ return rt9756_get_switching_state(data, pval);
+ case POWER_SUPPLY_PROP_HEALTH:
+ *pval = rt9756_get_charger_health(data);
+ return 0;
+ case POWER_SUPPLY_PROP_ONLINE:
+ return rt9756_get_charger_online(data, pval);
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ return rt9756_get_vbus_ovp(data, pval);
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ return rt9756_get_adc(data, ADC_VBUS, pval);
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ return rt9756_get_value_field_range(data, F_IBUSOCP_EN, F_IBUSOCP, R_IBUSOCP, pval);
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ return rt9756_get_adc(data, ADC_IBUS, pval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+ return rt9756_get_value_field_range(data, F_VBATOVP_EN, F_VBATOVP, R_VBATOVP, pval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+ return rt9756_get_value_field_range(data, F_IBATOCP_EN, F_IBATOCP, R_IBATOCP, pval);
+ case POWER_SUPPLY_PROP_TEMP:
+ return rt9756_get_adc(data, ADC_TDIE, pval);
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ *pval = atomic_read(&data->usb_type);
+ return 0;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = rt9756_model[data->model];
+ return 0;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = rt9756_manufacturer;
+ return 0;
+ default:
+ return -ENODATA;
+ }
+}
+
+static int rt9756_psy_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct rt9756_data *data = power_supply_get_drvdata(psy);
+ int intval = val->intval;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ memset(&data->chg_evt, 0, sizeof(data->chg_evt));
+ return regmap_field_write(data->rm_fields[F_CHG_EN], !!intval);
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ return rt9756_set_vbus_ovp(data, intval);
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ return rt9756_set_value_field_range(data, F_IBUSOCP_EN, F_IBUSOCP, R_IBUSOCP,
+ intval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+ return rt9756_set_value_field_range(data, F_VBATOVP_EN, F_VBATOVP, R_VBATOVP,
+ intval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+ return rt9756_set_value_field_range(data, F_IBATOCP_EN, F_IBATOCP, R_IBATOCP,
+ intval);
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ return regmap_field_write(data->rm_fields[F_BC12_EN], !!intval);
+ default:
+ return -EINVAL;
+ }
+}
+
+static const enum power_supply_property rt9756_psy_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_USB_TYPE,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static int rt9756_bat_psy_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct rt9756_data *data = power_supply_get_drvdata(psy);
+ int *pval = &val->intval;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ *pval = POWER_SUPPLY_TECHNOLOGY_LION;
+ return 0;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ return rt9756_get_adc(data, ADC_VBAT, pval);
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ return rt9756_get_adc(data, ADC_IBAT, pval);
+ default:
+ return -ENODATA;
+ }
+}
+
+static const enum power_supply_property rt9756_bat_psy_properties[] = {
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+static int rt9756_psy_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ case POWER_SUPPLY_PROP_ONLINE:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static const unsigned int rt9756_wdt_millisecond[] = {
+ 500, 1000, 5000, 30000, 40000, 80000, 128000, 255000
+};
+
+static ssize_t watchdog_timer_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct power_supply *psy = to_power_supply(dev);
+ struct rt9756_data *data = power_supply_get_drvdata(psy);
+ unsigned int wdt_tmr_now = 0, wdt_sel, wdt_dis;
+ int ret;
+
+ ret = regmap_field_read(data->rm_fields[F_WDT_DIS], &wdt_dis);
+ if (ret)
+ return ret;
+
+ if (!wdt_dis) {
+ ret = regmap_field_read(data->rm_fields[F_WDT_TMR], &wdt_sel);
+ if (ret)
+ return ret;
+
+ wdt_tmr_now = rt9756_wdt_millisecond[wdt_sel];
+ }
+
+ return sysfs_emit(buf, "%d\n", wdt_tmr_now);
+}
+
+static ssize_t watchdog_timer_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct power_supply *psy = to_power_supply(dev);
+ struct rt9756_data *data = power_supply_get_drvdata(psy);
+ unsigned int wdt_set, wdt_sel;
+ int ret;
+
+ ret = kstrtouint(buf, 10, &wdt_set);
+ if (ret)
+ return ret;
+
+ ret = regmap_field_write(data->rm_fields[F_WDT_DIS], 1);
+ if (ret)
+ return ret;
+
+ wdt_sel = find_closest(wdt_set, rt9756_wdt_millisecond,
+ ARRAY_SIZE(rt9756_wdt_millisecond));
+
+ ret = regmap_field_write(data->rm_fields[F_WDT_TMR], wdt_sel);
+ if (ret)
+ return ret;
+
+ if (wdt_set) {
+ ret = regmap_field_write(data->rm_fields[F_WDT_DIS], 0);
+ if (ret)
+ return ret;
+ }
+
+ return count;
+}
+
+static const char * const rt9756_opmode_str[] = { "bypass", "div2" };
+
+static ssize_t operation_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct power_supply *psy = to_power_supply(dev);
+ struct rt9756_data *data = power_supply_get_drvdata(psy);
+ unsigned int opmode;
+ int ret;
+
+ ret = regmap_field_read(data->rm_fields[F_OP_MODE], &opmode);
+ if (ret)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", rt9756_opmode_str[opmode]);
+}
+
+static ssize_t operation_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct power_supply *psy = to_power_supply(dev);
+ struct rt9756_data *data = power_supply_get_drvdata(psy);
+ int index, ret;
+
+ index = sysfs_match_string(rt9756_opmode_str, buf);
+ if (index < 0)
+ return index;
+
+ ret = regmap_field_write(data->rm_fields[F_OP_MODE], index);
+
+ return ret ?: count;
+}
+
+static DEVICE_ATTR_RW(watchdog_timer);
+static DEVICE_ATTR_RW(operation_mode);
+
+static struct attribute *rt9756_sysfs_attrs[] = {
+ &dev_attr_watchdog_timer.attr,
+ &dev_attr_operation_mode.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(rt9756_sysfs);
+
+static int rt9756_register_psy(struct rt9756_data *data)
+{
+ struct power_supply_desc *desc = &data->psy_desc;
+ struct power_supply_desc *bat_desc = &data->bat_psy_desc;
+ struct power_supply_config cfg = {}, bat_cfg = {};
+ struct device *dev = data->dev;
+ char *psy_name, *bat_psy_name, **supplied_to;
+
+ bat_cfg.drv_data = data;
+ bat_cfg.fwnode = dev_fwnode(dev);
+
+ bat_psy_name = devm_kasprintf(dev, GFP_KERNEL, "rt9756-%s-battery", dev_name(dev));
+ if (!bat_psy_name)
+ return -ENOMEM;
+
+ bat_desc->name = bat_psy_name;
+ bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
+ bat_desc->properties = rt9756_bat_psy_properties;
+ bat_desc->num_properties = ARRAY_SIZE(rt9756_bat_psy_properties);
+ bat_desc->get_property = rt9756_bat_psy_get_property;
+
+ data->bat_psy = devm_power_supply_register(dev, bat_desc, &bat_cfg);
+ if (IS_ERR(data->bat_psy))
+ return dev_err_probe(dev, PTR_ERR(data->bat_psy), "Failed to register battery\n");
+
+ supplied_to = devm_kzalloc(dev, sizeof(*supplied_to), GFP_KERNEL);
+ if (!supplied_to)
+ return -ENOMEM;
+
+ /* Link charger psy to battery psy */
+ supplied_to[0] = bat_psy_name;
+
+ cfg.drv_data = data;
+ cfg.fwnode = dev_fwnode(dev);
+ cfg.attr_grp = rt9756_sysfs_groups;
+ cfg.supplied_to = supplied_to;
+ cfg.num_supplicants = 1;
+
+ psy_name = devm_kasprintf(dev, GFP_KERNEL, "rt9756-%s", dev_name(dev));
+ if (!psy_name)
+ return -ENOMEM;
+
+ desc->name = psy_name;
+ desc->type = POWER_SUPPLY_TYPE_USB;
+ desc->usb_types = BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN) | BIT(POWER_SUPPLY_USB_TYPE_SDP) |
+ BIT(POWER_SUPPLY_USB_TYPE_DCP) | BIT(POWER_SUPPLY_USB_TYPE_CDP);
+ desc->properties = rt9756_psy_properties;
+ desc->num_properties = ARRAY_SIZE(rt9756_psy_properties);
+ desc->property_is_writeable = rt9756_psy_property_is_writeable;
+ desc->get_property = rt9756_psy_get_property;
+ desc->set_property = rt9756_psy_set_property;
+
+ data->psy = devm_power_supply_register(dev, desc, &cfg);
+
+ return PTR_ERR_OR_ZERO(data->psy);
+}
+
+static int rt9756_get_usb_type(struct rt9756_data *data)
+{
+ unsigned int type;
+ int report_type, ret;
+
+ ret = regmap_field_read(data->rm_fields[F_USB_STATE], &type);
+ if (ret)
+ return ret;
+
+ switch (type) {
+ case USB_SDP:
+ case USB_NSTD:
+ report_type = POWER_SUPPLY_USB_TYPE_SDP;
+ break;
+ case USB_DCP:
+ report_type = POWER_SUPPLY_USB_TYPE_DCP;
+ break;
+ case USB_CDP:
+ report_type = POWER_SUPPLY_USB_TYPE_CDP;
+ break;
+ case USB_NO_VBUS:
+ default:
+ report_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+ break;
+ }
+
+ atomic_set(&data->usb_type, report_type);
+ return 0;
+}
+
+static irqreturn_t rt9756_irq_handler(int irq, void *devid)
+{
+ struct rt9756_data *data = devid;
+ struct regmap *regmap = data->regmap;
+ struct charger_event *evt = &data->chg_evt;
+ unsigned int bc12_flag = 0;
+ int ret;
+
+ ret = regmap_read(regmap, RT9756_REG_INTFLAG1, &evt->flag1);
+ if (ret)
+ return IRQ_NONE;
+
+ ret = regmap_read(regmap, RT9756_REG_INTFLAG2, &evt->flag2);
+ if (ret)
+ return IRQ_NONE;
+
+ ret = regmap_read(regmap, RT9756_REG_INTFLAG3, &evt->flag3);
+ if (ret)
+ return IRQ_NONE;
+
+ if (data->model != MODEL_RT9770) {
+ ret = regmap_read(regmap, RT9756_REG_INTFLAG4, &evt->flag4);
+ if (ret)
+ return IRQ_NONE;
+
+ ret = regmap_read(regmap, RT9756_REG_BC12FLAG, &bc12_flag);
+ if (ret)
+ return IRQ_NONE;
+ }
+
+ dev_dbg(data->dev, "events: 0x%02x,%02x,%02x,%02x,%02x\n", evt->flag1, evt->flag2,
+ evt->flag3, evt->flag4, bc12_flag);
+
+ if (evt->flag2 & RT9756_EVT_VAC_INSERT) {
+ ret = regmap_field_write(data->rm_fields[F_BC12_EN], 1);
+ if (ret)
+ return IRQ_NONE;
+ }
+
+ if (evt->flag3 & RT9756_EVT_VAC_UVLO)
+ atomic_set(&data->usb_type, POWER_SUPPLY_USB_TYPE_UNKNOWN);
+
+ if (bc12_flag & RT9756_EVT_BC12_DONE) {
+ ret = rt9756_get_usb_type(data);
+ if (ret)
+ return IRQ_NONE;
+ }
+
+ power_supply_changed(data->psy);
+
+ return IRQ_HANDLED;
+}
+
+static int rt9756_config_batsense_resistor(struct rt9756_data *data)
+{
+ unsigned int shunt_resistor_uohms = 2000, rsense_sel;
+
+ device_property_read_u32(data->dev, "shunt-resistor-micro-ohms", &shunt_resistor_uohms);
+
+ if (!shunt_resistor_uohms || shunt_resistor_uohms > 5000)
+ return -EINVAL;
+
+ data->real_resistor = shunt_resistor_uohms;
+
+ /* Always choose the larger or equal one to prevent false ocp alarm */
+ if (shunt_resistor_uohms <= 1000) {
+ rsense_sel = 0;
+ data->rg_resistor = 1000;
+ } else if (shunt_resistor_uohms <= 2000) {
+ rsense_sel = 1;
+ data->rg_resistor = 2000;
+ } else {
+ rsense_sel = 2;
+ data->rg_resistor = 5000;
+ }
+
+ return regmap_field_write(data->rm_fields[F_IBAT_RSEN], rsense_sel);
+}
+
+static const struct reg_sequence rt9756_init_regs[] = {
+ REG_SEQ(0x00, 0x80, 1000), /* REG_RESET */
+ REG_SEQ0(0x04, 0x13), /* VACOVP/OVPGATE 12V */
+ REG_SEQ0(0x00, 0x28), /* WDT_DIS = 1 */
+ REG_SEQ0(0x0c, 0x02), /* MASK FLAG1 */
+ REG_SEQ0(0x0e, 0x06), /* MASK FLAG2 */
+ REG_SEQ0(0x10, 0xca), /* MASK FLAG3 */
+ REG_SEQ0(0x44, 0xa0), /* BC12_EN */
+ REG_SEQ0(0x47, 0x07), /* MASK BC12FLAG */
+ REG_SEQ0(0x4a, 0xfe), /* MASK FLAG4 */
+ REG_SEQ0(0x5c, 0x40), /* MASK CON_SWITCHING */
+ REG_SEQ0(0x63, 0x01), /* MASK VDDA_UVLO */
+};
+
+static const struct reg_sequence rt9770_init_regs[] = {
+ REG_SEQ(0x00, 0x80, 1000), /* REG_RESET */
+ REG_SEQ0(0x04, 0x13), /* VACOVP/OVPGATE 12V */
+ REG_SEQ0(0x00, 0x28), /* WDT_DIS = 1 */
+ REG_SEQ0(0x0c, 0x02), /* MASK FLAG1 */
+ REG_SEQ0(0x0e, 0x06), /* MASK FLAG2 */
+ REG_SEQ0(0x10, 0xca), /* MASK FLAG3 */
+ REG_SEQ0(0x5c, 0x40), /* MASK CON_SWITCHING */
+ REG_SEQ0(0x63, 0x01), /* MASK VDDA_UVLO */
+};
+
+static const struct regmap_config rt9756_regmap_config = {
+ .name = "rt9756",
+ .reg_bits = 16,
+ .val_bits = 8,
+ .max_register = 0x1ff,
+};
+
+static const struct regmap_config rt9770_regmap_config = {
+ .name = "rt9770",
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0xff,
+};
+
+static int rt9756_check_device_model(struct rt9756_data *data)
+{
+ struct device *dev = data->dev;
+ unsigned int revid;
+ int ret;
+
+ ret = regmap_field_read(data->rm_fields[F_REVISION], &revid);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to read revid\n");
+
+ if (revid == RT9757_REVID || revid == RT9757A_REVID)
+ data->model = MODEL_RT9757;
+ else if (revid == RT9756_REVID || revid == RT9756A_REVID)
+ data->model = MODEL_RT9756;
+ else
+ return dev_err_probe(dev, -EINVAL, "Unknown revision %d\n", revid);
+
+ return 0;
+}
+
+static int rt9770_check_device_model(struct rt9756_data *data)
+{
+ data->model = MODEL_RT9770;
+ return 0;
+}
+
+static int rt9756_probe(struct i2c_client *i2c)
+{
+ const struct rt975x_dev_data *dev_data;
+ struct device *dev = &i2c->dev;
+ struct rt9756_data *data;
+ struct regmap *regmap;
+ unsigned int devid;
+ int ret;
+
+ dev_data = device_get_match_data(dev);
+ if (!dev_data)
+ return dev_err_probe(dev, -EINVAL, "No device data found\n");
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->dev = dev;
+ mutex_init(&data->adc_lock);
+ atomic_set(&data->usb_type, POWER_SUPPLY_USB_TYPE_UNKNOWN);
+ i2c_set_clientdata(i2c, data);
+
+ regmap = devm_regmap_init_i2c(i2c, dev_data->regmap_config);
+ if (IS_ERR(regmap))
+ return dev_err_probe(dev, PTR_ERR(regmap), "Failed to init regmap\n");
+
+ data->regmap = regmap;
+
+ ret = devm_regmap_field_bulk_alloc(dev, regmap, data->rm_fields, dev_data->reg_fields,
+ F_MAX_FIELD);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to alloc regmap fields\n");
+
+ /* Richtek Device ID check */
+ ret = regmap_field_read(data->rm_fields[F_DEV_ID], &devid);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to read devid\n");
+
+ if (devid != RICHTEK_DEVID)
+ return dev_err_probe(dev, -ENODEV, "Incorrect VID 0x%02x\n", devid);
+
+ /* Get specific model */
+ ret = dev_data->check_device_model(data);
+ if (ret)
+ return ret;
+
+ ret = regmap_register_patch(regmap, dev_data->init_regs, dev_data->num_init_regs);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init registers\n");
+
+ ret = rt9756_config_batsense_resistor(data);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to config batsense resistor\n");
+
+ ret = rt9756_register_psy(data);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init power supply\n");
+
+ return devm_request_threaded_irq(dev, i2c->irq, NULL, rt9756_irq_handler, IRQF_ONESHOT,
+ dev_name(dev), data);
+}
+
+static void rt9756_shutdown(struct i2c_client *i2c)
+{
+ struct rt9756_data *data = i2c_get_clientdata(i2c);
+
+ regmap_field_write(data->rm_fields[F_REG_RST], 1);
+}
+
+static const struct rt975x_dev_data rt9756_dev_data = {
+ .regmap_config = &rt9756_regmap_config,
+ .reg_fields = rt9756_chg_fields,
+ .init_regs = rt9756_init_regs,
+ .num_init_regs = ARRAY_SIZE(rt9756_init_regs),
+ .check_device_model = rt9756_check_device_model,
+};
+
+static const struct rt975x_dev_data rt9770_dev_data = {
+ .regmap_config = &rt9770_regmap_config,
+ .reg_fields = rt9770_chg_fields,
+ .init_regs = rt9770_init_regs,
+ .num_init_regs = ARRAY_SIZE(rt9770_init_regs),
+ .check_device_model = rt9770_check_device_model,
+};
+
+static const struct of_device_id rt9756_device_match_table[] = {
+ { .compatible = "richtek,rt9756", .data = &rt9756_dev_data },
+ { .compatible = "richtek,rt9770", .data = &rt9770_dev_data },
+ {}
+};
+MODULE_DEVICE_TABLE(of, rt9756_device_match_table);
+
+static struct i2c_driver rt9756_charger_driver = {
+ .driver = {
+ .name = "rt9756",
+ .of_match_table = rt9756_device_match_table,
+ },
+ .probe = rt9756_probe,
+ .shutdown = rt9756_shutdown,
+};
+module_i2c_driver(rt9756_charger_driver);
+
+MODULE_DESCRIPTION("Richtek RT9756 charger driver");
+MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/wm831x_power.c b/drivers/power/supply/wm831x_power.c
index 6acdba7885ca..78fa0573ef25 100644
--- a/drivers/power/supply/wm831x_power.c
+++ b/drivers/power/supply/wm831x_power.c
@@ -144,6 +144,7 @@ static int wm831x_usb_limit_change(struct notifier_block *nb,
struct wm831x_power,
usb_notify);
unsigned int i, best;
+ int ret;
/* Find the highest supported limit */
best = 0;
@@ -156,8 +157,13 @@ static int wm831x_usb_limit_change(struct notifier_block *nb,
dev_dbg(wm831x_power->wm831x->dev,
"Limiting USB current to %umA", wm831x_usb_limits[best]);
- wm831x_set_bits(wm831x_power->wm831x, WM831X_POWER_STATE,
- WM831X_USB_ILIM_MASK, best);
+ ret = wm831x_set_bits(wm831x_power->wm831x, WM831X_POWER_STATE,
+ WM831X_USB_ILIM_MASK, best);
+ if (ret < 0) {
+ dev_err(wm831x_power->wm831x->dev,
+ "Failed to set USB current limit: %d\n", ret);
+ return ret;
+ }
return 0;
}
generated by cgit (git 2.34.1) at 2025-12-05 11:01:43 +0000