[PATCH] power: smb347-charger: Summit SMB358 charger IC
From: Vinay Simha BN
Date: Tue Aug 01 2017 - 14:51:13 EST
Summit microelectronics' SMB358 charger chip has
almost the same register map and functionality.
voltage and current table are only differed.
SMB345 charger IC tested in nexus7
Cc: John Stultz <john.stultz@xxxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: Jonghwa Lee <jonghwa3.lee@xxxxxxxxxxx>
Cc: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Cc: Myungjoo Ham <myungjoo.ham@xxxxxxxxxxx>
Signed-off-by: Vinay Simha BN <simhavcs@xxxxxxxxx>
---
v2:
* incorporated code review from Rob Herring
gpio line added for Enable charging control,
documentation bindings (vendor prefixes and unit suffixes)
---
.../bindings/power/supply/smb347_charger.txt | 73 +++++
drivers/power/supply/smb347-charger.c | 334 +++++++++++++--------
include/linux/power/smb347-charger.h | 4 +-
3 files changed, 283 insertions(+), 128 deletions(-)
create mode 100644 Documentation/devicetree/bindings/power/supply/smb347_charger.txt
diff --git a/Documentation/devicetree/bindings/power/supply/smb347_charger.txt b/Documentation/devicetree/bindings/power/supply/smb347_charger.txt
new file mode 100644
index 0000000..45da4ee
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/smb347_charger.txt
@@ -0,0 +1,73 @@
+smb347_charger bindings
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+[Required porperties]
+- compatible : "summit,smb345"
+ "summit,smb347"
+- reg : Slave address for i2c interface
+# At least one of following should be set
+ - enable-usb-charging
+ - enable-otg-charging
+ - enable-mains-charging
+
+[Optional properties]
+- interrupt-parent : The phandle for the interrupt controller
+- interrupts : Interrupt line index for mapping
+- en-gpio : Enable charging control
+ : If this is not specified it will use SW (i2c interface)
+
+# Charging constraints
+- max-chg-curr : microamps for charging Maximum current
+- max-chg-volt : microvolts for charging Maximum voltage
+- pre-chg-curr : microamps for Pre-charging current
+- term-curr : microamps for Charging cycle termination current
+- fast-volt-thershold : microvolts for Voltage threshold to transit to fast charge mode
+- mains-curr-limit : micromaps for Maximum input current from AC/DC input
+- usb-curr-limit : microamps for Maximum input current from USB input
+
+# Related thermometer monitoring (Degrees Celsius)
+- chip-temp-threshold : Chip temperature for thermal regulaton. <100, 130>
+- soft-cold-temp-limit : Cold battery temperature for soft alarm. <0, 15>*
+- soft-hot-temp-limit : Hot battery temperature for soft alarm. <40, 55>
+- hard-cold-temp-limit : Cold battery temperature for hard alarm. <0, 15>*
+- hard-hot-temp-limit : Hot battery temperature for hard alarm. <55, 65>
+(* The written temperature has +5'C offset. 0'C -> -5'C, 15'C -> 10'C)
+- soft-comp-method : Soft temperature limit compensation method
+ (Not defined) : Use default setting
+ <0> : Compensation none
+ <1> : Charge current compensation
+ <2> : Voltage compensation
+
+Example:
+ smb345@6a {
+ compatible = "summit,smb345";
+ reg = <0x6a>;
+ status = "okay";
+ interrupt-parent = <&tlmm_pinmux>;
+ interrupts = <23 IRQ_TYPE_EDGE_BOTH>;
+
+ max-chg-curr = <1800000>;
+ usb-curr-limit = <450000>;
+
+ chip-temp-thershold = <110>; /* celsius */
+
+ enable-usb-charging;
+ enable-otg-charging;
+ };
+
+ smb347@7f {
+ compatible = "summit,smb347";
+ reg = <0x7f>;
+ status = "okay";
+
+ max-chg-curr = <1800000>;
+ mains-curr-limit = <2000000>;
+ usb-curr-limit = <450000>;
+
+ chip-temp-thershold = <110>; /* celsius */
+
+ en-gpios = <&tlmm_pinmux 54 GPIO_ACTIVE_HIGH>;
+
+ enable-usb-charging;
+ enable-mains-charging;
+ };
diff --git a/drivers/power/supply/smb347-charger.c b/drivers/power/supply/smb347-charger.c
index 072c518..28666ab 100644
--- a/drivers/power/supply/smb347-charger.c
+++ b/drivers/power/supply/smb347-charger.c
@@ -124,6 +124,7 @@
/**
* struct smb347_charger - smb347 charger instance
+ * @id: smb charger id
* @lock: protects concurrent access to online variables
* @dev: pointer to device
* @regmap: pointer to driver regmap
@@ -136,7 +137,8 @@
* @pdata: pointer to platform data
*/
struct smb347_charger {
- struct mutex lock;
+ int id;
+ struct mutex lock; /* protects concurrent access */
struct device *dev;
struct regmap *regmap;
struct power_supply *mains;
@@ -145,61 +147,49 @@ struct smb347_charger {
bool mains_online;
bool usb_online;
bool charging_enabled;
- const struct smb347_charger_platform_data *pdata;
+ struct smb347_charger_platform_data *pdata;
+};
+
+enum smb_charger_chipid {
+ SMB345,
+ SMB347,
+ NUM_CHIP_TYPES,
};
/* Fast charge current in uA */
-static const unsigned int fcc_tbl[] = {
- 700000,
- 900000,
- 1200000,
- 1500000,
- 1800000,
- 2000000,
- 2200000,
- 2500000,
+static const unsigned int fcc_tbl[NUM_CHIP_TYPES][8] = {
+ [SMB345] = { 200000, 450000, 600000, 900000,
+ 1300000, 1500000, 1800000, 2000000 },
+ [SMB347] = { 700000, 900000, 1200000, 1500000,
+ 1800000, 2000000, 2200000, 2500000 },
};
/* Pre-charge current in uA */
-static const unsigned int pcc_tbl[] = {
- 100000,
- 150000,
- 200000,
- 250000,
+static const unsigned int pcc_tbl[NUM_CHIP_TYPES][4] = {
+ [SMB345] = { 150000, 250000, 350000, 450000 },
+ [SMB347] = { 100000, 150000, 200000, 250000 },
};
/* Termination current in uA */
-static const unsigned int tc_tbl[] = {
- 37500,
- 50000,
- 100000,
- 150000,
- 200000,
- 250000,
- 500000,
- 600000,
+static const unsigned int tc_tbl[NUM_CHIP_TYPES][8] = {
+ [SMB345] = { 30000, 40000, 60000, 80000,
+ 100000, 125000, 150000, 200000 },
+ [SMB347] = { 37500, 50000, 100000, 150000,
+ 200000, 250000, 500000, 600000 },
};
/* Input current limit in uA */
-static const unsigned int icl_tbl[] = {
- 300000,
- 500000,
- 700000,
- 900000,
- 1200000,
- 1500000,
- 1800000,
- 2000000,
- 2200000,
- 2500000,
+static const unsigned int icl_tbl[NUM_CHIP_TYPES][10] = {
+ [SMB345] = { 300000, 500000, 700000, 1000000, 1500000,
+ 1800000, 2000000, 2000000, 2000000, 2000000 },
+ [SMB347] = { 300000, 500000, 700000, 900000, 1200000,
+ 1500000, 1800000, 2000000, 2200000, 2500000 },
};
/* Charge current compensation in uA */
-static const unsigned int ccc_tbl[] = {
- 250000,
- 700000,
- 900000,
- 1200000,
+static const unsigned int ccc_tbl[NUM_CHIP_TYPES][4] = {
+ [SMB345] = { 200000, 450000, 600000, 900000 },
+ [SMB347] = { 250000, 700000, 900000, 1200000 },
};
/* Convert register value to current using lookup table */
@@ -354,10 +344,10 @@ static int smb347_start_stop_charging(struct smb347_charger *smb)
static int smb347_set_charge_current(struct smb347_charger *smb)
{
- int ret;
+ int ret, id = smb->id;
if (smb->pdata->max_charge_current) {
- ret = current_to_hw(fcc_tbl, ARRAY_SIZE(fcc_tbl),
+ ret = current_to_hw(fcc_tbl[id], ARRAY_SIZE(fcc_tbl[id]),
smb->pdata->max_charge_current);
if (ret < 0)
return ret;
@@ -370,7 +360,7 @@ static int smb347_set_charge_current(struct smb347_charger *smb)
}
if (smb->pdata->pre_charge_current) {
- ret = current_to_hw(pcc_tbl, ARRAY_SIZE(pcc_tbl),
+ ret = current_to_hw(pcc_tbl[id], ARRAY_SIZE(pcc_tbl[id]),
smb->pdata->pre_charge_current);
if (ret < 0)
return ret;
@@ -383,7 +373,7 @@ static int smb347_set_charge_current(struct smb347_charger *smb)
}
if (smb->pdata->termination_current) {
- ret = current_to_hw(tc_tbl, ARRAY_SIZE(tc_tbl),
+ ret = current_to_hw(tc_tbl[id], ARRAY_SIZE(tc_tbl[id]),
smb->pdata->termination_current);
if (ret < 0)
return ret;
@@ -399,10 +389,10 @@ static int smb347_set_charge_current(struct smb347_charger *smb)
static int smb347_set_current_limits(struct smb347_charger *smb)
{
- int ret;
+ int ret, id = smb->id;
if (smb->pdata->mains_current_limit) {
- ret = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
+ ret = current_to_hw(icl_tbl[id], ARRAY_SIZE(icl_tbl[id]),
smb->pdata->mains_current_limit);
if (ret < 0)
return ret;
@@ -415,7 +405,7 @@ static int smb347_set_current_limits(struct smb347_charger *smb)
}
if (smb->pdata->usb_hc_current_limit) {
- ret = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
+ ret = current_to_hw(icl_tbl[id], ARRAY_SIZE(icl_tbl[id]),
smb->pdata->usb_hc_current_limit);
if (ret < 0)
return ret;
@@ -440,9 +430,10 @@ static int smb347_set_voltage_limits(struct smb347_charger *smb)
ret = clamp_val(ret, 2400000, 3000000) - 2400000;
ret /= 200000;
- ret = regmap_update_bits(smb->regmap, CFG_FLOAT_VOLTAGE,
- CFG_FLOAT_VOLTAGE_THRESHOLD_MASK,
- ret << CFG_FLOAT_VOLTAGE_THRESHOLD_SHIFT);
+ ret = regmap_update_bits
+ (smb->regmap, CFG_FLOAT_VOLTAGE,
+ CFG_FLOAT_VOLTAGE_THRESHOLD_MASK,
+ ret << CFG_FLOAT_VOLTAGE_THRESHOLD_SHIFT);
if (ret < 0)
return ret;
}
@@ -467,7 +458,7 @@ static int smb347_set_temp_limits(struct smb347_charger *smb)
{
bool enable_therm_monitor = false;
int ret = 0;
- int val;
+ int val, id = smb->id;
if (smb->pdata->chip_temp_threshold) {
val = smb->pdata->chip_temp_threshold;
@@ -565,8 +556,9 @@ static int smb347_set_temp_limits(struct smb347_charger *smb)
}
if (smb->pdata->suspend_on_hard_temp_limit) {
- ret = regmap_update_bits(smb->regmap, CFG_SYSOK,
- CFG_SYSOK_SUSPEND_HARD_LIMIT_DISABLED, 0);
+ ret = regmap_update_bits
+ (smb->regmap, CFG_SYSOK,
+ CFG_SYSOK_SUSPEND_HARD_LIMIT_DISABLED, 0);
if (ret < 0)
return ret;
}
@@ -575,28 +567,31 @@ static int smb347_set_temp_limits(struct smb347_charger *smb)
SMB347_SOFT_TEMP_COMPENSATE_DEFAULT) {
val = smb->pdata->soft_temp_limit_compensation & 0x3;
- ret = regmap_update_bits(smb->regmap, CFG_THERM,
- CFG_THERM_SOFT_HOT_COMPENSATION_MASK,
- val << CFG_THERM_SOFT_HOT_COMPENSATION_SHIFT);
+ ret = regmap_update_bits
+ (smb->regmap, CFG_THERM,
+ CFG_THERM_SOFT_HOT_COMPENSATION_MASK,
+ val << CFG_THERM_SOFT_HOT_COMPENSATION_SHIFT);
if (ret < 0)
return ret;
- ret = regmap_update_bits(smb->regmap, CFG_THERM,
- CFG_THERM_SOFT_COLD_COMPENSATION_MASK,
- val << CFG_THERM_SOFT_COLD_COMPENSATION_SHIFT);
+ ret = regmap_update_bits
+ (smb->regmap, CFG_THERM,
+ CFG_THERM_SOFT_COLD_COMPENSATION_MASK,
+ val << CFG_THERM_SOFT_COLD_COMPENSATION_SHIFT);
if (ret < 0)
return ret;
}
if (smb->pdata->charge_current_compensation) {
- val = current_to_hw(ccc_tbl, ARRAY_SIZE(ccc_tbl),
+ val = current_to_hw(ccc_tbl[id], ARRAY_SIZE(ccc_tbl[id]),
smb->pdata->charge_current_compensation);
if (val < 0)
return val;
- ret = regmap_update_bits(smb->regmap, CFG_OTG,
- CFG_OTG_CC_COMPENSATION_MASK,
- (val & 0x3) << CFG_OTG_CC_COMPENSATION_SHIFT);
+ ret = regmap_update_bits
+ (smb->regmap, CFG_OTG,
+ CFG_OTG_CC_COMPENSATION_MASK,
+ (val & 0x3) << CFG_OTG_CC_COMPENSATION_SHIFT);
if (ret < 0)
return ret;
}
@@ -662,7 +657,8 @@ static int smb347_hw_init(struct smb347_charger *smb)
* support for driving VBUS. Otherwise we disable it.
*/
ret = regmap_update_bits(smb->regmap, CFG_OTHER, CFG_OTHER_RID_MASK,
- smb->pdata->use_usb_otg ? CFG_OTHER_RID_ENABLED_AUTO_OTG : 0);
+ smb->pdata->use_usb_otg ?
+ CFG_OTHER_RID_ENABLED_AUTO_OTG : 0);
if (ret < 0)
goto fail;
@@ -723,10 +719,12 @@ static irqreturn_t smb347_interrupt(int irq, void *data)
return IRQ_NONE;
}
- ret = regmap_read(smb->regmap, IRQSTAT_D, &irqstat_d);
- if (ret < 0) {
- dev_warn(smb->dev, "reading IRQSTAT_D failed\n");
- return IRQ_NONE;
+ if (smb->id != SMB345) {
+ ret = regmap_read(smb->regmap, IRQSTAT_D, &irqstat_d);
+ if (ret < 0) {
+ dev_warn(smb->dev, "reading IRQSTAT_D failed\n");
+ return IRQ_NONE;
+ }
}
ret = regmap_read(smb->regmap, IRQSTAT_E, &irqstat_e);
@@ -761,13 +759,15 @@ static irqreturn_t smb347_interrupt(int irq, void *data)
* If we got a charger timeout INT that means the charge
* full is not detected with in charge timeout value.
*/
- if (irqstat_d & IRQSTAT_D_CHARGE_TIMEOUT_IRQ) {
- dev_dbg(smb->dev, "total Charge Timeout INT received\n");
+ if (smb->id != SMB345) {
+ if (irqstat_d & IRQSTAT_D_CHARGE_TIMEOUT_IRQ) {
+ dev_dbg(smb->dev, "total Charge Timeout INT received\n");
- if (irqstat_d & IRQSTAT_D_CHARGE_TIMEOUT_STAT)
- dev_warn(smb->dev, "charging stopped due to timeout\n");
- power_supply_changed(smb->battery);
- handled = true;
+ if (irqstat_d & IRQSTAT_D_CHARGE_TIMEOUT_STAT)
+ dev_warn(smb->dev, "charging stopped due to timeout\n");
+ power_supply_changed(smb->battery);
+ handled = true;
+ }
}
/*
@@ -809,7 +809,7 @@ static int smb347_irq_set(struct smb347_charger *smb, bool enable)
goto fail;
ret = regmap_update_bits(smb->regmap, CFG_STATUS_IRQ, 0xff,
- enable ? (CFG_STATUS_IRQ_TERMINATION_OR_TAPER |
+ enable ? (CFG_STATUS_IRQ_TERMINATION_OR_TAPER |
CFG_STATUS_IRQ_CHARGE_TIMEOUT) : 0);
if (ret < 0)
goto fail;
@@ -834,22 +834,22 @@ static inline int smb347_irq_disable(struct smb347_charger *smb)
static int smb347_irq_init(struct smb347_charger *smb,
struct i2c_client *client)
{
- const struct smb347_charger_platform_data *pdata = smb->pdata;
- int ret, irq = gpio_to_irq(pdata->irq_gpio);
+ int ret;
+ unsigned long irqflags;
- ret = gpio_request_one(pdata->irq_gpio, GPIOF_IN, client->name);
- if (ret < 0)
- goto fail;
+ irqflags = client->dev.of_node ? 0 : IRQF_TRIGGER_FALLING;
+
+ ret = devm_request_threaded_irq(smb->dev, client->irq, NULL,
+ smb347_interrupt, irqflags |
+ IRQF_ONESHOT,
+ client->name, smb);
- ret = request_threaded_irq(irq, NULL, smb347_interrupt,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- client->name, smb);
if (ret < 0)
- goto fail_gpio;
+ goto out;
ret = smb347_set_writable(smb, true);
if (ret < 0)
- goto fail_irq;
+ goto out;
/*
* Configure the STAT output to be suitable for interrupts: disable
@@ -859,20 +859,10 @@ static int smb347_irq_init(struct smb347_charger *smb,
CFG_STAT_ACTIVE_HIGH | CFG_STAT_DISABLED,
CFG_STAT_DISABLED);
if (ret < 0)
- goto fail_readonly;
-
- smb347_set_writable(smb, false);
- client->irq = irq;
- return 0;
+ client->irq = 0;
-fail_readonly:
smb347_set_writable(smb, false);
-fail_irq:
- free_irq(irq, smb);
-fail_gpio:
- gpio_free(pdata->irq_gpio);
-fail:
- client->irq = 0;
+out:
return ret;
}
@@ -882,7 +872,7 @@ static int smb347_irq_init(struct smb347_charger *smb,
*/
static int get_const_charge_current(struct smb347_charger *smb)
{
- int ret, intval;
+ int ret, intval, id = smb->id;
unsigned int v;
if (!smb347_is_ps_online(smb))
@@ -897,10 +887,12 @@ static int get_const_charge_current(struct smb347_charger *smb)
* and we can detect which table to use from bit 5.
*/
if (v & 0x20) {
- intval = hw_to_current(fcc_tbl, ARRAY_SIZE(fcc_tbl), v & 7);
+ intval = hw_to_current(fcc_tbl[id],
+ ARRAY_SIZE(fcc_tbl[id]), v & 7);
} else {
v >>= 3;
- intval = hw_to_current(pcc_tbl, ARRAY_SIZE(pcc_tbl), v & 7);
+ intval = hw_to_current(pcc_tbl[id],
+ ARRAY_SIZE(pcc_tbl[id]), v & 7);
}
return intval;
@@ -947,16 +939,14 @@ static int smb347_mains_get_property(struct power_supply *psy,
ret = get_const_charge_voltage(smb);
if (ret < 0)
return ret;
- else
- val->intval = ret;
+ val->intval = ret;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = get_const_charge_current(smb);
if (ret < 0)
return ret;
- else
- val->intval = ret;
+ val->intval = ret;
break;
default:
@@ -988,16 +978,14 @@ static int smb347_usb_get_property(struct power_supply *psy,
ret = get_const_charge_voltage(smb);
if (ret < 0)
return ret;
- else
- val->intval = ret;
+ val->intval = ret;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = get_const_charge_current(smb);
if (ret < 0)
return ret;
- else
- val->intval = ret;
+ val->intval = ret;
break;
default:
@@ -1026,7 +1014,7 @@ static int smb347_get_charging_status(struct smb347_charger *smb)
return ret;
if ((val & STAT_C_CHARGER_ERROR) ||
- (val & STAT_C_HOLDOFF_STAT)) {
+ (val & STAT_C_HOLDOFF_STAT)) {
/*
* set to NOT CHARGING upon charger error
* or charging has stopped.
@@ -1049,7 +1037,7 @@ static int smb347_get_charging_status(struct smb347_charger *smb)
} else {
/*
* in this case no charger error or termination
- * occured but charging is not in progress!!!
+ * occurred but charging is not in progress!!!
*/
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
}
@@ -1178,6 +1166,75 @@ static bool smb347_readable_reg(struct device *dev, unsigned int reg)
return smb347_volatile_reg(dev, reg);
}
+static void smb347_dt_parse_pdata(struct device_node *np,
+ struct smb347_charger_platform_data *pdata)
+{
+ /* Charing constraints */
+ of_property_read_u32(np, "max-chg-curr", &pdata->max_charge_current);
+ of_property_read_u32(np, "max-chg-volt", &pdata->max_charge_voltage);
+ of_property_read_u32(np, "pre-chg-curr", &pdata->pre_charge_current);
+ of_property_read_u32(np, "term-curr", &pdata->termination_current);
+ of_property_read_u32(np, "fast-volt-threshold",
+ &pdata->pre_to_fast_voltage);
+ of_property_read_u32(np, "mains-curr-limit",
+ &pdata->mains_current_limit);
+ of_property_read_u32(np, "usb-curr-limit",
+ &pdata->usb_hc_current_limit);
+
+ /* For thermometer monitoring */
+ of_property_read_u32(np, "chip-temp-threshold",
+ &pdata->chip_temp_threshold);
+ if (of_property_read_u32(np, "soft-cold-temp-limit",
+ &pdata->soft_cold_temp_limit))
+ pdata->soft_cold_temp_limit = SMB347_TEMP_USE_DEFAULT;
+ if (of_property_read_u32(np, "soft-hot-temp-limit",
+ &pdata->soft_hot_temp_limit))
+ pdata->soft_hot_temp_limit = SMB347_TEMP_USE_DEFAULT;
+ if (of_property_read_u32(np, "hard-cold-temp-limit",
+ &pdata->hard_cold_temp_limit))
+ pdata->hard_cold_temp_limit = SMB347_TEMP_USE_DEFAULT;
+ if (of_property_read_u32(np, "hard-hot-temp-limit",
+ &pdata->hard_hot_temp_limit))
+ pdata->hard_hot_temp_limit = SMB347_TEMP_USE_DEFAULT;
+
+ /* Suspend when battery temperature is outside hard limits */
+ if ((pdata->hard_cold_temp_limit != SMB347_TEMP_USE_DEFAULT) ||
+ (pdata->hard_hot_temp_limit != SMB347_TEMP_USE_DEFAULT))
+ pdata->suspend_on_hard_temp_limit = true;
+
+ if (of_property_read_u32(np, "soft-comp-method",
+ &pdata->soft_temp_limit_compensation))
+ pdata->soft_temp_limit_compensation =
+ SMB347_SOFT_TEMP_COMPENSATE_DEFAULT;
+
+ of_property_read_u32(np, "chg-curr-comp",
+ &pdata->charge_current_compensation);
+
+ /* Supported charging mode */
+ pdata->use_mains = of_property_read_bool(np, "enable-mains-charging");
+ pdata->use_usb = of_property_read_bool(np, "enable-usb-charging");
+ pdata->use_usb_otg = of_property_read_bool(np, "enable-otg-charging");
+
+ /* If IRQ is enabled or not */
+ if (!of_get_property(np, "interrupts", NULL))
+ pdata->irq_gpio = -1;
+}
+
+static struct smb347_charger_platform_data
+ *smb347_get_platdata(struct device *dev)
+{
+ struct smb347_charger_platform_data *pdata = NULL;
+
+ if (dev->of_node) {
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ smb347_dt_parse_pdata(dev->of_node, pdata);
+ } else {
+ pdata = dev_get_platdata(dev);
+ }
+
+ return pdata;
+}
+
static const struct regmap_config smb347_regmap = {
.reg_bits = 8,
.val_bits = 8,
@@ -1210,32 +1267,34 @@ static const struct power_supply_desc smb347_battery_desc = {
.num_properties = ARRAY_SIZE(smb347_battery_properties),
};
+static char *battery[] = {
+ "smb347-battery",
+};
+
static int smb347_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- static char *battery[] = { "smb347-battery" };
- const struct smb347_charger_platform_data *pdata;
struct power_supply_config mains_usb_cfg = {}, battery_cfg = {};
struct device *dev = &client->dev;
struct smb347_charger *smb;
int ret;
- pdata = dev->platform_data;
- if (!pdata)
- return -EINVAL;
-
- if (!pdata->use_mains && !pdata->use_usb)
- return -EINVAL;
-
smb = devm_kzalloc(dev, sizeof(*smb), GFP_KERNEL);
if (!smb)
return -ENOMEM;
+ smb->pdata = smb347_get_platdata(dev);
+ if (IS_ERR_OR_NULL(smb->pdata))
+ return -ENODEV;
+
+ if (!smb->pdata->use_mains && !smb->pdata->use_usb)
+ return -EINVAL;
+
i2c_set_clientdata(client, smb);
mutex_init(&smb->lock);
+ smb->id = id->driver_data;
smb->dev = &client->dev;
- smb->pdata = pdata;
smb->regmap = devm_regmap_init_i2c(client, &smb347_regmap);
if (IS_ERR(smb->regmap))
@@ -1277,10 +1336,24 @@ static int smb347_probe(struct i2c_client *client,
}
/*
+ * EN - enable input can be controlled by i2c or gpio.
+ */
+ smb->pdata->en_gpio = devm_gpiod_get(dev, "en", GPIOD_OUT_HIGH);
+ if (IS_ERR(smb->pdata->en_gpio)) {
+ ret = PTR_ERR(smb->pdata->en_gpio);
+ dev_err(dev, "cannot get en-gpio %d\n", ret);
+ dev_dbg(smb->dev, "charging enable/disable in SW enabled\n");
+
+ smb->pdata->enable_control = SMB347_CHG_ENABLE_SW;
+ } else {
+ smb->pdata->enable_control = SMB347_CHG_ENABLE_PIN_ACTIVE_HIGH;
+ }
+
+ /*
* Interrupt pin is optional. If it is connected, we setup the
* interrupt support here.
*/
- if (pdata->irq_gpio >= 0) {
+ if (smb->pdata->irq_gpio >= 0) {
ret = smb347_irq_init(smb, client);
if (ret < 0) {
dev_warn(dev, "failed to initialize IRQ: %d\n", ret);
@@ -1297,11 +1370,8 @@ static int smb347_remove(struct i2c_client *client)
{
struct smb347_charger *smb = i2c_get_clientdata(client);
- if (client->irq) {
+ if (client->irq)
smb347_irq_disable(smb);
- free_irq(client->irq, smb);
- gpio_free(smb->pdata->irq_gpio);
- }
power_supply_unregister(smb->battery);
if (smb->pdata->use_usb)
@@ -1312,14 +1382,24 @@ static int smb347_remove(struct i2c_client *client)
}
static const struct i2c_device_id smb347_id[] = {
- { "smb347", 0 },
+ { "smb345", SMB345 },
+ { "smb347", SMB347 },
{ }
};
MODULE_DEVICE_TABLE(i2c, smb347_id);
+#ifdef CONFIG_OF
+static const struct of_device_id of_smb347_ids[] = {
+ { .compatible = "summit,smb345" },
+ { .compatible = "summit,smb347" },
+ {},
+};
+#endif
+
static struct i2c_driver smb347_driver = {
.driver = {
.name = "smb347",
+ .of_match_table = of_match_ptr(of_smb347_ids),
},
.probe = smb347_probe,
.remove = smb347_remove,
diff --git a/include/linux/power/smb347-charger.h b/include/linux/power/smb347-charger.h
index b3cb20d..7bdc709 100644
--- a/include/linux/power/smb347-charger.h
+++ b/include/linux/power/smb347-charger.h
@@ -47,7 +47,7 @@ enum smb347_chg_enable {
* @pre_charge_current: current (in uA) to use in pre-charging phase
* @termination_current: current (in uA) used to determine when the
* charging cycle terminates
- * @pre_to_fast_voltage: voltage (in uV) treshold used for transitioning to
+ * @pre_to_fast_voltage: voltage (in uV) threshold used for transitioning to
* pre-charge to fast charge mode
* @mains_current_limit: maximum input current drawn from AC/DC input (in uA)
* @usb_hc_current_limit: maximum input high current (in uA) drawn from USB
@@ -71,6 +71,7 @@ enum smb347_chg_enable {
* @use_usb: USB input can be used
* @use_usb_otg: USB OTG output can be used (not implemented yet)
* @irq_gpio: GPIO number used for interrupts (%-1 if not used)
+ * @en_gpio: GPIO used for Enable input
* @enable_control: how charging enable/disable is controlled
* (driver/pin controls)
*
@@ -111,6 +112,7 @@ struct smb347_charger_platform_data {
bool use_usb;
bool use_usb_otg;
int irq_gpio;
+ struct gpio_desc *en_gpio;
enum smb347_chg_enable enable_control;
};
--
2.1.2