* published by the Free Software Foundation.
*/
-#include <linux/debugfs.h>
+#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/power_supply.h>
#include <linux/power/smb347-charger.h>
-#include <linux/seq_file.h>
+#include <linux/regmap.h>
/*
* Configuration registers. These are mirrored to volatile RAM and can be
#define CFG_CURRENT_LIMIT_DC_SHIFT 4
#define CFG_CURRENT_LIMIT_USB_MASK 0x0f
#define CFG_FLOAT_VOLTAGE 0x03
+#define CFG_FLOAT_VOLTAGE_FLOAT_MASK 0x3f
#define CFG_FLOAT_VOLTAGE_THRESHOLD_MASK 0xc0
#define CFG_FLOAT_VOLTAGE_THRESHOLD_SHIFT 6
#define CFG_STAT 0x05
#define STAT_C_CHARGER_ERROR BIT(6)
#define STAT_E 0x3f
+#define SMB347_MAX_REGISTER 0x3f
+
/**
* struct smb347_charger - smb347 charger instance
* @lock: protects concurrent access to online variables
- * @client: pointer to i2c client
+ * @dev: pointer to device
+ * @regmap: pointer to driver regmap
* @mains: power_supply instance for AC/DC power
* @usb: power_supply instance for USB power
* @battery: power_supply instance for battery
* @mains_online: is AC/DC input connected
* @usb_online: is USB input connected
* @charging_enabled: is charging enabled
- * @dentry: for debugfs
* @pdata: pointer to platform data
*/
struct smb347_charger {
struct mutex lock;
- struct i2c_client *client;
+ struct device *dev;
+ struct regmap *regmap;
struct power_supply mains;
struct power_supply usb;
struct power_supply battery;
bool mains_online;
bool usb_online;
bool charging_enabled;
- struct dentry *dentry;
const struct smb347_charger_platform_data *pdata;
};
1200000,
};
-/* Convert register value to current using lookup table */
-static int hw_to_current(const unsigned int *tbl, size_t size, unsigned int val)
-{
- if (val >= size)
- return -EINVAL;
- return tbl[val];
-}
-
/* Convert current to register value using lookup table */
static int current_to_hw(const unsigned int *tbl, size_t size, unsigned int val)
{
return i > 0 ? i - 1 : -EINVAL;
}
-static int smb347_read(struct smb347_charger *smb, u8 reg)
-{
- int ret;
-
- ret = i2c_smbus_read_byte_data(smb->client, reg);
- if (ret < 0)
- dev_warn(&smb->client->dev, "failed to read reg 0x%x: %d\n",
- reg, ret);
- return ret;
-}
-
-static int smb347_write(struct smb347_charger *smb, u8 reg, u8 val)
-{
- int ret;
-
- ret = i2c_smbus_write_byte_data(smb->client, reg, val);
- if (ret < 0)
- dev_warn(&smb->client->dev, "failed to write reg 0x%x: %d\n",
- reg, ret);
- return ret;
-}
-
/**
- * smb347_update_status - updates the charging status
+ * smb347_update_ps_status - refreshes the power source status
* @smb: pointer to smb347 charger instance
*
- * Function checks status of the charging and updates internal state
- * accordingly. Returns %0 if there is no change in status, %1 if the
- * status has changed and negative errno in case of failure.
+ * Function checks whether any power source is connected to the charger and
+ * updates internal state accordingly. If there is a change to previous state
+ * function returns %1, otherwise %0 and negative errno in case of errror.
*/
-static int smb347_update_status(struct smb347_charger *smb)
+static int smb347_update_ps_status(struct smb347_charger *smb)
{
bool usb = false;
bool dc = false;
+ unsigned int val;
int ret;
- ret = smb347_read(smb, IRQSTAT_E);
+ ret = regmap_read(smb->regmap, IRQSTAT_E, &val);
if (ret < 0)
return ret;
* platform data _and_ whether corresponding undervoltage is set.
*/
if (smb->pdata->use_mains)
- dc = !(ret & IRQSTAT_E_DCIN_UV_STAT);
+ dc = !(val & IRQSTAT_E_DCIN_UV_STAT);
if (smb->pdata->use_usb)
- usb = !(ret & IRQSTAT_E_USBIN_UV_STAT);
+ usb = !(val & IRQSTAT_E_USBIN_UV_STAT);
mutex_lock(&smb->lock);
ret = smb->mains_online != dc || smb->usb_online != usb;
}
/*
- * smb347_is_online - returns whether input power source is connected
+ * smb347_is_ps_online - returns whether input power source is connected
* @smb: pointer to smb347 charger instance
*
* Returns %true if input power source is connected. Note that this is
* dependent on what platform has configured for usable power sources. For
- * example if USB is disabled, this will return %false even if the USB
- * cable is connected.
+ * example if USB is disabled, this will return %false even if the USB cable
+ * is connected.
*/
-static bool smb347_is_online(struct smb347_charger *smb)
+static bool smb347_is_ps_online(struct smb347_charger *smb)
{
bool ret;
*/
static int smb347_charging_status(struct smb347_charger *smb)
{
+ unsigned int val;
int ret;
- if (!smb347_is_online(smb))
+ if (!smb347_is_ps_online(smb))
return 0;
- ret = smb347_read(smb, STAT_C);
+ ret = regmap_read(smb->regmap, STAT_C, &val);
if (ret < 0)
return 0;
- return (ret & STAT_C_CHG_MASK) >> STAT_C_CHG_SHIFT;
+ return (val & STAT_C_CHG_MASK) >> STAT_C_CHG_SHIFT;
}
static int smb347_charging_set(struct smb347_charger *smb, bool enable)
int ret = 0;
if (smb->pdata->enable_control != SMB347_CHG_ENABLE_SW) {
- dev_dbg(&smb->client->dev,
- "charging enable/disable in SW disabled\n");
+ dev_dbg(smb->dev, "charging enable/disable in SW disabled\n");
return 0;
}
mutex_lock(&smb->lock);
if (smb->charging_enabled != enable) {
- ret = smb347_read(smb, CMD_A);
- if (ret < 0)
- goto out;
-
- smb->charging_enabled = enable;
-
- if (enable)
- ret |= CMD_A_CHG_ENABLED;
- else
- ret &= ~CMD_A_CHG_ENABLED;
-
- ret = smb347_write(smb, CMD_A, ret);
+ ret = regmap_update_bits(smb->regmap, CMD_A, CMD_A_CHG_ENABLED,
+ enable ? CMD_A_CHG_ENABLED : 0);
+ if (!ret)
+ smb->charging_enabled = enable;
}
-out:
mutex_unlock(&smb->lock);
return ret;
}
return smb347_charging_set(smb, false);
}
-static int smb347_update_online(struct smb347_charger *smb)
+static int smb347_start_stop_charging(struct smb347_charger *smb)
{
int ret;
* disable or enable the charging. We do it manually because it
* depends on how the platform has configured the valid inputs.
*/
- if (smb347_is_online(smb)) {
+ if (smb347_is_ps_online(smb)) {
ret = smb347_charging_enable(smb);
if (ret < 0)
- dev_err(&smb->client->dev,
- "failed to enable charging\n");
+ dev_err(smb->dev, "failed to enable charging\n");
} else {
ret = smb347_charging_disable(smb);
if (ret < 0)
- dev_err(&smb->client->dev,
- "failed to disable charging\n");
+ dev_err(smb->dev, "failed to disable charging\n");
}
return ret;
static int smb347_set_charge_current(struct smb347_charger *smb)
{
- int ret, val;
-
- ret = smb347_read(smb, CFG_CHARGE_CURRENT);
- if (ret < 0)
- return ret;
+ int ret;
if (smb->pdata->max_charge_current) {
- val = current_to_hw(fcc_tbl, ARRAY_SIZE(fcc_tbl),
+ ret = current_to_hw(fcc_tbl, ARRAY_SIZE(fcc_tbl),
smb->pdata->max_charge_current);
- if (val < 0)
- return val;
+ if (ret < 0)
+ return ret;
- ret &= ~CFG_CHARGE_CURRENT_FCC_MASK;
- ret |= val << CFG_CHARGE_CURRENT_FCC_SHIFT;
+ ret = regmap_update_bits(smb->regmap, CFG_CHARGE_CURRENT,
+ CFG_CHARGE_CURRENT_FCC_MASK,
+ ret << CFG_CHARGE_CURRENT_FCC_SHIFT);
+ if (ret < 0)
+ return ret;
}
if (smb->pdata->pre_charge_current) {
- val = current_to_hw(pcc_tbl, ARRAY_SIZE(pcc_tbl),
+ ret = current_to_hw(pcc_tbl, ARRAY_SIZE(pcc_tbl),
smb->pdata->pre_charge_current);
- if (val < 0)
- return val;
+ if (ret < 0)
+ return ret;
- ret &= ~CFG_CHARGE_CURRENT_PCC_MASK;
- ret |= val << CFG_CHARGE_CURRENT_PCC_SHIFT;
+ ret = regmap_update_bits(smb->regmap, CFG_CHARGE_CURRENT,
+ CFG_CHARGE_CURRENT_PCC_MASK,
+ ret << CFG_CHARGE_CURRENT_PCC_SHIFT);
+ if (ret < 0)
+ return ret;
}
if (smb->pdata->termination_current) {
- val = current_to_hw(tc_tbl, ARRAY_SIZE(tc_tbl),
+ ret = current_to_hw(tc_tbl, ARRAY_SIZE(tc_tbl),
smb->pdata->termination_current);
- if (val < 0)
- return val;
+ if (ret < 0)
+ return ret;
- ret &= ~CFG_CHARGE_CURRENT_TC_MASK;
- ret |= val;
+ ret = regmap_update_bits(smb->regmap, CFG_CHARGE_CURRENT,
+ CFG_CHARGE_CURRENT_TC_MASK, ret);
+ if (ret < 0)
+ return ret;
}
- return smb347_write(smb, CFG_CHARGE_CURRENT, ret);
+ return 0;
}
static int smb347_set_current_limits(struct smb347_charger *smb)
{
- int ret, val;
-
- ret = smb347_read(smb, CFG_CURRENT_LIMIT);
- if (ret < 0)
- return ret;
+ int ret;
if (smb->pdata->mains_current_limit) {
- val = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
+ ret = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
smb->pdata->mains_current_limit);
- if (val < 0)
- return val;
+ if (ret < 0)
+ return ret;
- ret &= ~CFG_CURRENT_LIMIT_DC_MASK;
- ret |= val << CFG_CURRENT_LIMIT_DC_SHIFT;
+ ret = regmap_update_bits(smb->regmap, CFG_CURRENT_LIMIT,
+ CFG_CURRENT_LIMIT_DC_MASK,
+ ret << CFG_CURRENT_LIMIT_DC_SHIFT);
+ if (ret < 0)
+ return ret;
}
if (smb->pdata->usb_hc_current_limit) {
- val = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
+ ret = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
smb->pdata->usb_hc_current_limit);
- if (val < 0)
- return val;
+ if (ret < 0)
+ return ret;
- ret &= ~CFG_CURRENT_LIMIT_USB_MASK;
- ret |= val;
+ ret = regmap_update_bits(smb->regmap, CFG_CURRENT_LIMIT,
+ CFG_CURRENT_LIMIT_USB_MASK, ret);
+ if (ret < 0)
+ return ret;
}
- return smb347_write(smb, CFG_CURRENT_LIMIT, ret);
+ return 0;
}
static int smb347_set_voltage_limits(struct smb347_charger *smb)
{
- int ret, val;
-
- ret = smb347_read(smb, CFG_FLOAT_VOLTAGE);
- if (ret < 0)
- return ret;
+ int ret;
if (smb->pdata->pre_to_fast_voltage) {
- val = smb->pdata->pre_to_fast_voltage;
+ ret = smb->pdata->pre_to_fast_voltage;
/* uV */
- val = clamp_val(val, 2400000, 3000000) - 2400000;
- val /= 200000;
+ ret = clamp_val(ret, 2400000, 3000000) - 2400000;
+ ret /= 200000;
- ret &= ~CFG_FLOAT_VOLTAGE_THRESHOLD_MASK;
- ret |= val << 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;
}
if (smb->pdata->max_charge_voltage) {
- val = smb->pdata->max_charge_voltage;
+ ret = smb->pdata->max_charge_voltage;
/* uV */
- val = clamp_val(val, 3500000, 4500000) - 3500000;
- val /= 20000;
+ ret = clamp_val(ret, 3500000, 4500000) - 3500000;
+ ret /= 20000;
- ret |= val;
+ ret = regmap_update_bits(smb->regmap, CFG_FLOAT_VOLTAGE,
+ CFG_FLOAT_VOLTAGE_FLOAT_MASK, ret);
+ if (ret < 0)
+ return ret;
}
- return smb347_write(smb, CFG_FLOAT_VOLTAGE, ret);
+ return 0;
}
static int smb347_set_temp_limits(struct smb347_charger *smb)
{
bool enable_therm_monitor = false;
- int ret, val;
+ int ret = 0;
+ int val;
if (smb->pdata->chip_temp_threshold) {
val = smb->pdata->chip_temp_threshold;
val = clamp_val(val, 100, 130) - 100;
val /= 10;
- ret = smb347_read(smb, CFG_OTG);
- if (ret < 0)
- return ret;
-
- ret &= ~CFG_OTG_TEMP_THRESHOLD_MASK;
- ret |= val << CFG_OTG_TEMP_THRESHOLD_SHIFT;
-
- ret = smb347_write(smb, CFG_OTG, ret);
+ ret = regmap_update_bits(smb->regmap, CFG_OTG,
+ CFG_OTG_TEMP_THRESHOLD_MASK,
+ val << CFG_OTG_TEMP_THRESHOLD_SHIFT);
if (ret < 0)
return ret;
}
- ret = smb347_read(smb, CFG_TEMP_LIMIT);
- if (ret < 0)
- return ret;
-
if (smb->pdata->soft_cold_temp_limit != SMB347_TEMP_USE_DEFAULT) {
val = smb->pdata->soft_cold_temp_limit;
/* this goes from higher to lower so invert the value */
val = ~val & 0x3;
- ret &= ~CFG_TEMP_LIMIT_SOFT_COLD_MASK;
- ret |= val << CFG_TEMP_LIMIT_SOFT_COLD_SHIFT;
+ ret = regmap_update_bits(smb->regmap, CFG_TEMP_LIMIT,
+ CFG_TEMP_LIMIT_SOFT_COLD_MASK,
+ val << CFG_TEMP_LIMIT_SOFT_COLD_SHIFT);
+ if (ret < 0)
+ return ret;
enable_therm_monitor = true;
}
val = clamp_val(val, 40, 55) - 40;
val /= 5;
- ret &= ~CFG_TEMP_LIMIT_SOFT_HOT_MASK;
- ret |= val << CFG_TEMP_LIMIT_SOFT_HOT_SHIFT;
+ ret = regmap_update_bits(smb->regmap, CFG_TEMP_LIMIT,
+ CFG_TEMP_LIMIT_SOFT_HOT_MASK,
+ val << CFG_TEMP_LIMIT_SOFT_HOT_SHIFT);
+ if (ret < 0)
+ return ret;
enable_therm_monitor = true;
}
/* this goes from higher to lower so invert the value */
val = ~val & 0x3;
- ret &= ~CFG_TEMP_LIMIT_HARD_COLD_MASK;
- ret |= val << CFG_TEMP_LIMIT_HARD_COLD_SHIFT;
+ ret = regmap_update_bits(smb->regmap, CFG_TEMP_LIMIT,
+ CFG_TEMP_LIMIT_HARD_COLD_MASK,
+ val << CFG_TEMP_LIMIT_HARD_COLD_SHIFT);
+ if (ret < 0)
+ return ret;
enable_therm_monitor = true;
}
val = clamp_val(val, 50, 65) - 50;
val /= 5;
- ret &= ~CFG_TEMP_LIMIT_HARD_HOT_MASK;
- ret |= val << CFG_TEMP_LIMIT_HARD_HOT_SHIFT;
+ ret = regmap_update_bits(smb->regmap, CFG_TEMP_LIMIT,
+ CFG_TEMP_LIMIT_HARD_HOT_MASK,
+ val << CFG_TEMP_LIMIT_HARD_HOT_SHIFT);
+ if (ret < 0)
+ return ret;
enable_therm_monitor = true;
}
- ret = smb347_write(smb, CFG_TEMP_LIMIT, ret);
- if (ret < 0)
- return ret;
-
/*
* If any of the temperature limits are set, we also enable the
* thermistor monitoring.
* depending on the configuration.
*/
if (enable_therm_monitor) {
- ret = smb347_read(smb, CFG_THERM);
- if (ret < 0)
- return ret;
-
- ret &= ~CFG_THERM_MONITOR_DISABLED;
-
- ret = smb347_write(smb, CFG_THERM, ret);
+ ret = regmap_update_bits(smb->regmap, CFG_THERM,
+ CFG_THERM_MONITOR_DISABLED, 0);
if (ret < 0)
return ret;
}
if (smb->pdata->suspend_on_hard_temp_limit) {
- ret = smb347_read(smb, CFG_SYSOK);
- if (ret < 0)
- return ret;
-
- ret &= ~CFG_SYSOK_SUSPEND_HARD_LIMIT_DISABLED;
-
- ret = smb347_write(smb, CFG_SYSOK, ret);
+ ret = regmap_update_bits(smb->regmap, CFG_SYSOK,
+ CFG_SYSOK_SUSPEND_HARD_LIMIT_DISABLED, 0);
if (ret < 0)
return ret;
}
SMB347_SOFT_TEMP_COMPENSATE_DEFAULT) {
val = smb->pdata->soft_temp_limit_compensation & 0x3;
- ret = smb347_read(smb, CFG_THERM);
+ 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 &= ~CFG_THERM_SOFT_HOT_COMPENSATION_MASK;
- ret |= val << CFG_THERM_SOFT_HOT_COMPENSATION_SHIFT;
-
- ret &= ~CFG_THERM_SOFT_COLD_COMPENSATION_MASK;
- ret |= val << CFG_THERM_SOFT_COLD_COMPENSATION_SHIFT;
-
- ret = smb347_write(smb, CFG_THERM, ret);
+ 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 (val < 0)
return val;
- ret = smb347_read(smb, CFG_OTG);
- if (ret < 0)
- return ret;
-
- ret &= ~CFG_OTG_CC_COMPENSATION_MASK;
- ret |= (val & 0x3) << CFG_OTG_CC_COMPENSATION_SHIFT;
-
- ret = smb347_write(smb, CFG_OTG, ret);
+ 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;
}
*/
static int smb347_set_writable(struct smb347_charger *smb, bool writable)
{
- int ret;
-
- ret = smb347_read(smb, CMD_A);
- if (ret < 0)
- return ret;
-
- if (writable)
- ret |= CMD_A_ALLOW_WRITE;
- else
- ret &= ~CMD_A_ALLOW_WRITE;
-
- return smb347_write(smb, CMD_A, ret);
+ return regmap_update_bits(smb->regmap, CMD_A, CMD_A_ALLOW_WRITE,
+ writable ? CMD_A_ALLOW_WRITE : 0);
}
static int smb347_hw_init(struct smb347_charger *smb)
{
+ unsigned int val;
int ret;
ret = smb347_set_writable(smb, true);
/* If USB charging is disabled we put the USB in suspend mode */
if (!smb->pdata->use_usb) {
- ret = smb347_read(smb, CMD_A);
- if (ret < 0)
- goto fail;
-
- ret |= CMD_A_SUSPEND_ENABLED;
-
- ret = smb347_write(smb, CMD_A, ret);
+ ret = regmap_update_bits(smb->regmap, CMD_A,
+ CMD_A_SUSPEND_ENABLED,
+ CMD_A_SUSPEND_ENABLED);
if (ret < 0)
goto fail;
}
- ret = smb347_read(smb, CFG_OTHER);
- if (ret < 0)
- goto fail;
-
/*
* If configured by platform data, we enable hardware Auto-OTG
* support for driving VBUS. Otherwise we disable it.
*/
- ret &= ~CFG_OTHER_RID_MASK;
- if (smb->pdata->use_usb_otg)
- ret |= CFG_OTHER_RID_ENABLED_AUTO_OTG;
-
- ret = smb347_write(smb, CFG_OTHER, ret);
- if (ret < 0)
- goto fail;
-
- ret = smb347_read(smb, CFG_PIN);
+ ret = regmap_update_bits(smb->regmap, CFG_OTHER, CFG_OTHER_RID_MASK,
+ smb->pdata->use_usb_otg ? CFG_OTHER_RID_ENABLED_AUTO_OTG : 0);
if (ret < 0)
goto fail;
* command register unless pin control is specified in the platform
* data.
*/
- ret &= ~CFG_PIN_EN_CTRL_MASK;
-
switch (smb->pdata->enable_control) {
- case SMB347_CHG_ENABLE_SW:
- /* Do nothing, 0 means i2c control */
- break;
case SMB347_CHG_ENABLE_PIN_ACTIVE_LOW:
- ret |= CFG_PIN_EN_CTRL_ACTIVE_LOW;
+ val = CFG_PIN_EN_CTRL_ACTIVE_LOW;
break;
case SMB347_CHG_ENABLE_PIN_ACTIVE_HIGH:
- ret |= CFG_PIN_EN_CTRL_ACTIVE_HIGH;
+ val = CFG_PIN_EN_CTRL_ACTIVE_HIGH;
+ break;
+ default:
+ val = 0;
break;
}
- /* Disable Automatic Power Source Detection (APSD) interrupt. */
- ret &= ~CFG_PIN_EN_APSD_IRQ;
+ ret = regmap_update_bits(smb->regmap, CFG_PIN, CFG_PIN_EN_CTRL_MASK,
+ val);
+ if (ret < 0)
+ goto fail;
- ret = smb347_write(smb, CFG_PIN, ret);
+ /* Disable Automatic Power Source Detection (APSD) interrupt. */
+ ret = regmap_update_bits(smb->regmap, CFG_PIN, CFG_PIN_EN_APSD_IRQ, 0);
if (ret < 0)
goto fail;
- ret = smb347_update_status(smb);
+ ret = smb347_update_ps_status(smb);
if (ret < 0)
goto fail;
- ret = smb347_update_online(smb);
+ ret = smb347_start_stop_charging(smb);
fail:
smb347_set_writable(smb, false);
static irqreturn_t smb347_interrupt(int irq, void *data)
{
struct smb347_charger *smb = data;
- int stat_c, irqstat_e, irqstat_c;
- irqreturn_t ret = IRQ_NONE;
+ unsigned int stat_c, irqstat_e, irqstat_c;
+ bool handled = false;
+ int ret;
- stat_c = smb347_read(smb, STAT_C);
- if (stat_c < 0) {
- dev_warn(&smb->client->dev, "reading STAT_C failed\n");
+ ret = regmap_read(smb->regmap, STAT_C, &stat_c);
+ if (ret < 0) {
+ dev_warn(smb->dev, "reading STAT_C failed\n");
return IRQ_NONE;
}
- irqstat_c = smb347_read(smb, IRQSTAT_C);
- if (irqstat_c < 0) {
- dev_warn(&smb->client->dev, "reading IRQSTAT_C failed\n");
+ ret = regmap_read(smb->regmap, IRQSTAT_C, &irqstat_c);
+ if (ret < 0) {
+ dev_warn(smb->dev, "reading IRQSTAT_C failed\n");
return IRQ_NONE;
}
- irqstat_e = smb347_read(smb, IRQSTAT_E);
- if (irqstat_e < 0) {
- dev_warn(&smb->client->dev, "reading IRQSTAT_E failed\n");
+ ret = regmap_read(smb->regmap, IRQSTAT_E, &irqstat_e);
+ if (ret < 0) {
+ dev_warn(smb->dev, "reading IRQSTAT_E failed\n");
return IRQ_NONE;
}
* disable charging.
*/
if (stat_c & STAT_C_CHARGER_ERROR) {
- dev_err(&smb->client->dev,
- "error in charger, disabling charging\n");
+ dev_err(smb->dev, "error in charger, disabling charging\n");
smb347_charging_disable(smb);
power_supply_changed(&smb->battery);
-
- ret = IRQ_HANDLED;
+ handled = true;
}
/*
if (irqstat_c & (IRQSTAT_C_TERMINATION_IRQ | IRQSTAT_C_TAPER_IRQ)) {
if (irqstat_c & IRQSTAT_C_TERMINATION_STAT)
power_supply_changed(&smb->battery);
- ret = IRQ_HANDLED;
+ handled = true;
}
/*
* was connected or disconnected.
*/
if (irqstat_e & (IRQSTAT_E_USBIN_UV_IRQ | IRQSTAT_E_DCIN_UV_IRQ)) {
- if (smb347_update_status(smb) > 0) {
- smb347_update_online(smb);
- power_supply_changed(&smb->mains);
- power_supply_changed(&smb->usb);
+ if (smb347_update_ps_status(smb) > 0) {
+ smb347_start_stop_charging(smb);
+ if (smb->pdata->use_mains)
+ power_supply_changed(&smb->mains);
+ if (smb->pdata->use_usb)
+ power_supply_changed(&smb->usb);
}
- ret = IRQ_HANDLED;
+ handled = true;
}
- return ret;
+ return handled ? IRQ_HANDLED : IRQ_NONE;
}
static int smb347_irq_set(struct smb347_charger *smb, bool enable)
* - termination current reached
* - charger error
*/
- if (enable) {
- ret = smb347_write(smb, CFG_FAULT_IRQ, CFG_FAULT_IRQ_DCIN_UV);
- if (ret < 0)
- goto fail;
-
- ret = smb347_write(smb, CFG_STATUS_IRQ,
- CFG_STATUS_IRQ_TERMINATION_OR_TAPER);
- if (ret < 0)
- goto fail;
-
- ret = smb347_read(smb, CFG_PIN);
- if (ret < 0)
- goto fail;
-
- ret |= CFG_PIN_EN_CHARGER_ERROR;
-
- ret = smb347_write(smb, CFG_PIN, ret);
- } else {
- ret = smb347_write(smb, CFG_FAULT_IRQ, 0);
- if (ret < 0)
- goto fail;
-
- ret = smb347_write(smb, CFG_STATUS_IRQ, 0);
- if (ret < 0)
- goto fail;
-
- ret = smb347_read(smb, CFG_PIN);
- if (ret < 0)
- goto fail;
-
- ret &= ~CFG_PIN_EN_CHARGER_ERROR;
+ ret = regmap_update_bits(smb->regmap, CFG_FAULT_IRQ, 0xff,
+ enable ? CFG_FAULT_IRQ_DCIN_UV : 0);
+ if (ret < 0)
+ goto fail;
- ret = smb347_write(smb, CFG_PIN, ret);
- }
+ ret = regmap_update_bits(smb->regmap, CFG_STATUS_IRQ, 0xff,
+ enable ? CFG_STATUS_IRQ_TERMINATION_OR_TAPER : 0);
+ if (ret < 0)
+ goto fail;
+ ret = regmap_update_bits(smb->regmap, CFG_PIN, CFG_PIN_EN_CHARGER_ERROR,
+ enable ? CFG_PIN_EN_CHARGER_ERROR : 0);
fail:
smb347_set_writable(smb, false);
return ret;
return smb347_irq_set(smb, false);
}
-static int smb347_irq_init(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);
- ret = gpio_request_one(pdata->irq_gpio, GPIOF_IN, smb->client->name);
+ ret = gpio_request_one(pdata->irq_gpio, GPIOF_IN, client->name);
if (ret < 0)
goto fail;
ret = request_threaded_irq(irq, NULL, smb347_interrupt,
- IRQF_TRIGGER_FALLING, smb->client->name,
- smb);
+ IRQF_TRIGGER_FALLING, client->name, smb);
if (ret < 0)
goto fail_gpio;
* Configure the STAT output to be suitable for interrupts: disable
* all other output (except interrupts) and make it active low.
*/
- ret = smb347_read(smb, CFG_STAT);
- if (ret < 0)
- goto fail_readonly;
-
- ret &= ~CFG_STAT_ACTIVE_HIGH;
- ret |= CFG_STAT_DISABLED;
-
- ret = smb347_write(smb, CFG_STAT, ret);
- if (ret < 0)
- goto fail_readonly;
-
- ret = smb347_irq_enable(smb);
+ ret = regmap_update_bits(smb->regmap, CFG_STAT,
+ CFG_STAT_ACTIVE_HIGH | CFG_STAT_DISABLED,
+ CFG_STAT_DISABLED);
if (ret < 0)
goto fail_readonly;
smb347_set_writable(smb, false);
- smb->client->irq = irq;
+ client->irq = irq;
return 0;
fail_readonly:
fail_gpio:
gpio_free(pdata->irq_gpio);
fail:
- smb->client->irq = 0;
+ client->irq = 0;
return ret;
}
const struct smb347_charger_platform_data *pdata = smb->pdata;
int ret;
- ret = smb347_update_status(smb);
+ ret = smb347_update_ps_status(smb);
if (ret < 0)
return ret;
switch (prop) {
case POWER_SUPPLY_PROP_STATUS:
- if (!smb347_is_online(smb)) {
+ if (!smb347_is_ps_online(smb)) {
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
break;
}
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
- if (!smb347_is_online(smb))
+ if (!smb347_is_ps_online(smb))
return -ENODATA;
/*
val->intval = pdata->battery_info.voltage_max_design;
break;
- case POWER_SUPPLY_PROP_VOLTAGE_NOW:
- if (!smb347_is_online(smb))
- return -ENODATA;
- ret = smb347_read(smb, STAT_A);
- if (ret < 0)
- return ret;
-
- ret &= STAT_A_FLOAT_VOLTAGE_MASK;
- if (ret > 0x3d)
- ret = 0x3d;
-
- val->intval = 3500000 + ret * 20000;
- break;
-
- case POWER_SUPPLY_PROP_CURRENT_NOW:
- if (!smb347_is_online(smb))
- return -ENODATA;
-
- ret = smb347_read(smb, STAT_B);
- if (ret < 0)
- return ret;
-
- /*
- * The current value is composition of FCC and PCC values
- * and we can detect which table to use from bit 5.
- */
- if (ret & 0x20) {
- val->intval = hw_to_current(fcc_tbl,
- ARRAY_SIZE(fcc_tbl),
- ret & 7);
- } else {
- ret >>= 3;
- val->intval = hw_to_current(pcc_tbl,
- ARRAY_SIZE(pcc_tbl),
- ret & 7);
- }
- break;
-
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
val->intval = pdata->battery_info.charge_full_design;
break;
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
- POWER_SUPPLY_PROP_VOLTAGE_NOW,
- POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_MODEL_NAME,
};
-static int smb347_debugfs_show(struct seq_file *s, void *data)
+static bool smb347_volatile_reg(struct device *dev, unsigned int reg)
{
- struct smb347_charger *smb = s->private;
- int ret;
- u8 reg;
-
- seq_printf(s, "Control registers:\n");
- seq_printf(s, "==================\n");
- for (reg = CFG_CHARGE_CURRENT; reg <= CFG_ADDRESS; reg++) {
- ret = smb347_read(smb, reg);
- seq_printf(s, "0x%02x:\t0x%02x\n", reg, ret);
- }
- seq_printf(s, "\n");
-
- seq_printf(s, "Command registers:\n");
- seq_printf(s, "==================\n");
- ret = smb347_read(smb, CMD_A);
- seq_printf(s, "0x%02x:\t0x%02x\n", CMD_A, ret);
- ret = smb347_read(smb, CMD_B);
- seq_printf(s, "0x%02x:\t0x%02x\n", CMD_B, ret);
- ret = smb347_read(smb, CMD_C);
- seq_printf(s, "0x%02x:\t0x%02x\n", CMD_C, ret);
- seq_printf(s, "\n");
-
- seq_printf(s, "Interrupt status registers:\n");
- seq_printf(s, "===========================\n");
- for (reg = IRQSTAT_A; reg <= IRQSTAT_F; reg++) {
- ret = smb347_read(smb, reg);
- seq_printf(s, "0x%02x:\t0x%02x\n", reg, ret);
- }
- seq_printf(s, "\n");
-
- seq_printf(s, "Status registers:\n");
- seq_printf(s, "=================\n");
- for (reg = STAT_A; reg <= STAT_E; reg++) {
- ret = smb347_read(smb, reg);
- seq_printf(s, "0x%02x:\t0x%02x\n", reg, ret);
+ switch (reg) {
+ case IRQSTAT_A:
+ case IRQSTAT_C:
+ case IRQSTAT_E:
+ case IRQSTAT_F:
+ case STAT_A:
+ case STAT_B:
+ case STAT_C:
+ case STAT_E:
+ return true;
}
- return 0;
+ return false;
}
-static int smb347_debugfs_open(struct inode *inode, struct file *file)
+static bool smb347_readable_reg(struct device *dev, unsigned int reg)
{
- return single_open(file, smb347_debugfs_show, inode->i_private);
+ switch (reg) {
+ case CFG_CHARGE_CURRENT:
+ case CFG_CURRENT_LIMIT:
+ case CFG_FLOAT_VOLTAGE:
+ case CFG_STAT:
+ case CFG_PIN:
+ case CFG_THERM:
+ case CFG_SYSOK:
+ case CFG_OTHER:
+ case CFG_OTG:
+ case CFG_TEMP_LIMIT:
+ case CFG_FAULT_IRQ:
+ case CFG_STATUS_IRQ:
+ case CFG_ADDRESS:
+ case CMD_A:
+ case CMD_B:
+ case CMD_C:
+ return true;
+ }
+
+ return smb347_volatile_reg(dev, reg);
}
-static const struct file_operations smb347_debugfs_fops = {
- .open = smb347_debugfs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
+static const struct regmap_config smb347_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = SMB347_MAX_REGISTER,
+ .volatile_reg = smb347_volatile_reg,
+ .readable_reg = smb347_readable_reg,
};
static int smb347_probe(struct i2c_client *client,
i2c_set_clientdata(client, smb);
mutex_init(&smb->lock);
- smb->client = client;
+ smb->dev = &client->dev;
smb->pdata = pdata;
+ smb->regmap = devm_regmap_init_i2c(client, &smb347_regmap);
+ if (IS_ERR(smb->regmap))
+ return PTR_ERR(smb->regmap);
+
ret = smb347_hw_init(smb);
if (ret < 0)
return ret;
- smb->mains.name = "smb347-mains";
- smb->mains.type = POWER_SUPPLY_TYPE_MAINS;
- smb->mains.get_property = smb347_mains_get_property;
- smb->mains.properties = smb347_mains_properties;
- smb->mains.num_properties = ARRAY_SIZE(smb347_mains_properties);
- smb->mains.supplied_to = battery;
- smb->mains.num_supplicants = ARRAY_SIZE(battery);
-
- smb->usb.name = "smb347-usb";
- smb->usb.type = POWER_SUPPLY_TYPE_USB;
- smb->usb.get_property = smb347_usb_get_property;
- smb->usb.properties = smb347_usb_properties;
- smb->usb.num_properties = ARRAY_SIZE(smb347_usb_properties);
- smb->usb.supplied_to = battery;
- smb->usb.num_supplicants = ARRAY_SIZE(battery);
+ if (smb->pdata->use_mains) {
+ smb->mains.name = "smb347-mains";
+ smb->mains.type = POWER_SUPPLY_TYPE_MAINS;
+ smb->mains.get_property = smb347_mains_get_property;
+ smb->mains.properties = smb347_mains_properties;
+ smb->mains.num_properties = ARRAY_SIZE(smb347_mains_properties);
+ smb->mains.supplied_to = battery;
+ smb->mains.num_supplicants = ARRAY_SIZE(battery);
+ ret = power_supply_register(dev, &smb->mains);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (smb->pdata->use_usb) {
+ smb->usb.name = "smb347-usb";
+ smb->usb.type = POWER_SUPPLY_TYPE_USB;
+ smb->usb.get_property = smb347_usb_get_property;
+ smb->usb.properties = smb347_usb_properties;
+ smb->usb.num_properties = ARRAY_SIZE(smb347_usb_properties);
+ smb->usb.supplied_to = battery;
+ smb->usb.num_supplicants = ARRAY_SIZE(battery);
+ ret = power_supply_register(dev, &smb->usb);
+ if (ret < 0) {
+ if (smb->pdata->use_mains)
+ power_supply_unregister(&smb->mains);
+ return ret;
+ }
+ }
smb->battery.name = "smb347-battery";
smb->battery.type = POWER_SUPPLY_TYPE_BATTERY;
smb->battery.properties = smb347_battery_properties;
smb->battery.num_properties = ARRAY_SIZE(smb347_battery_properties);
- ret = power_supply_register(dev, &smb->mains);
- if (ret < 0)
- return ret;
-
- ret = power_supply_register(dev, &smb->usb);
- if (ret < 0) {
- power_supply_unregister(&smb->mains);
- return ret;
- }
ret = power_supply_register(dev, &smb->battery);
if (ret < 0) {
- power_supply_unregister(&smb->usb);
- power_supply_unregister(&smb->mains);
+ if (smb->pdata->use_usb)
+ power_supply_unregister(&smb->usb);
+ if (smb->pdata->use_mains)
+ power_supply_unregister(&smb->mains);
return ret;
}
* interrupt support here.
*/
if (pdata->irq_gpio >= 0) {
- ret = smb347_irq_init(smb);
+ ret = smb347_irq_init(smb, client);
if (ret < 0) {
dev_warn(dev, "failed to initialize IRQ: %d\n", ret);
dev_warn(dev, "disabling IRQ support\n");
+ } else {
+ smb347_irq_enable(smb);
}
}
- smb->dentry = debugfs_create_file("smb347-regs", S_IRUSR, NULL, smb,
- &smb347_debugfs_fops);
return 0;
}
{
struct smb347_charger *smb = i2c_get_clientdata(client);
- if (!IS_ERR_OR_NULL(smb->dentry))
- debugfs_remove(smb->dentry);
-
if (client->irq) {
smb347_irq_disable(smb);
free_irq(client->irq, smb);
}
power_supply_unregister(&smb->battery);
- power_supply_unregister(&smb->usb);
- power_supply_unregister(&smb->mains);
+ if (smb->pdata->use_usb)
+ power_supply_unregister(&smb->usb);
+ if (smb->pdata->use_mains)
+ power_supply_unregister(&smb->mains);
return 0;
}
.id_table = smb347_id,
};
-static int __init smb347_init(void)
-{
- return i2c_add_driver(&smb347_driver);
-}
-module_init(smb347_init);
-
-static void __exit smb347_exit(void)
-{
- i2c_del_driver(&smb347_driver);
-}
-module_exit(smb347_exit);
+module_i2c_driver(smb347_driver);
MODULE_AUTHOR("Bruce E. Robertson <bruce.e.robertson@intel.com>");
MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
projects / firefly-linux-kernel-4.4.55.git / blobdiff