summaryrefslogtreecommitdiffstats
path: root/drivers/power/supply
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/power/supply')
-rw-r--r--drivers/power/supply/Kconfig14
-rw-r--r--drivers/power/supply/Makefile1
-rw-r--r--drivers/power/supply/act8945a_charger.c4
-rw-r--r--drivers/power/supply/ltc2941-battery-gauge.c156
-rw-r--r--drivers/power/supply/max1721x_battery.c448
-rw-r--r--drivers/power/supply/pcf50633-charger.c2
-rw-r--r--drivers/power/supply/sbs-battery.c26
7 files changed, 591 insertions, 60 deletions
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index af6397224a82..5ab90c1f3f7c 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -322,6 +322,19 @@ config BATTERY_MAX17042
with MAX17042. This driver also supports max17047/50 chips which are
improved version of max17042.
+config BATTERY_MAX1721X
+ tristate "MAX17211/MAX17215 standalone gas-gauge"
+ depends on W1
+ select REGMAP_W1
+ help
+ MAX1721x is fuel-gauge systems for lithium-ion (Li+) batteries
+ in handheld and portable equipment. MAX17211 used with single cell
+ battery. MAX17215 designed for muticell battery. Both them have
+ OneWire (W1) host interface.
+
+ Say Y here to enable support for the MAX17211/MAX17215 standalone
+ battery gas-gauge.
+
config BATTERY_Z2
tristate "Z2 battery driver"
depends on I2C && MACH_ZIPIT2
@@ -374,6 +387,7 @@ config BATTERY_RX51
config CHARGER_CPCAP
tristate "CPCAP PMIC Charger Driver"
depends on MFD_CPCAP && IIO
+ depends on OMAP_USB2 || (!OMAP_USB2 && COMPILE_TEST)
default MFD_CPCAP
help
Say Y to enable support for CPCAP PMIC charger driver for Motorola
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 946a5e6be860..621a19058fec 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -45,6 +45,7 @@ obj-$(CONFIG_CHARGER_DA9150) += da9150-charger.o
obj-$(CONFIG_BATTERY_DA9150) += da9150-fg.o
obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
obj-$(CONFIG_BATTERY_MAX17042) += max17042_battery.o
+obj-$(CONFIG_BATTERY_MAX1721X) += max1721x_battery.o
obj-$(CONFIG_BATTERY_Z2) += z2_battery.o
obj-$(CONFIG_BATTERY_RT5033) += rt5033_battery.o
obj-$(CONFIG_CHARGER_RT9455) += rt9455_charger.o
diff --git a/drivers/power/supply/act8945a_charger.c b/drivers/power/supply/act8945a_charger.c
index d1eb2e359532..8e117b31ba79 100644
--- a/drivers/power/supply/act8945a_charger.c
+++ b/drivers/power/supply/act8945a_charger.c
@@ -596,9 +596,9 @@ static int act8945a_charger_probe(struct platform_device *pdev)
return ret;
irq = of_irq_get(pdev->dev.of_node, 0);
- if (irq == -EPROBE_DEFER) {
+ if (irq <= 0) {
dev_err(&pdev->dev, "failed to find IRQ number\n");
- return -EPROBE_DEFER;
+ return irq ?: -ENXIO;
}
ret = devm_request_irq(&pdev->dev, irq, act8945a_status_changed,
diff --git a/drivers/power/supply/ltc2941-battery-gauge.c b/drivers/power/supply/ltc2941-battery-gauge.c
index 7efb908f4451..08e4fd9ee607 100644
--- a/drivers/power/supply/ltc2941-battery-gauge.c
+++ b/drivers/power/supply/ltc2941-battery-gauge.c
@@ -1,6 +1,6 @@
/*
- * I2C client/driver for the Linear Technology LTC2941 and LTC2943
- * Battery Gas Gauge IC
+ * I2C client/driver for the Linear Technology LTC2941, LTC2942, LTC2943
+ * and LTC2944 Battery Gas Gauge IC
*
* Copyright (C) 2014 Topic Embedded Systems
*
@@ -34,35 +34,39 @@ enum ltc294x_reg {
LTC294X_REG_CONTROL = 0x01,
LTC294X_REG_ACC_CHARGE_MSB = 0x02,
LTC294X_REG_ACC_CHARGE_LSB = 0x03,
- LTC294X_REG_THRESH_HIGH_MSB = 0x04,
- LTC294X_REG_THRESH_HIGH_LSB = 0x05,
- LTC294X_REG_THRESH_LOW_MSB = 0x06,
- LTC294X_REG_THRESH_LOW_LSB = 0x07,
- LTC294X_REG_VOLTAGE_MSB = 0x08,
- LTC294X_REG_VOLTAGE_LSB = 0x09,
- LTC294X_REG_CURRENT_MSB = 0x0E,
- LTC294X_REG_CURRENT_LSB = 0x0F,
- LTC294X_REG_TEMPERATURE_MSB = 0x14,
- LTC294X_REG_TEMPERATURE_LSB = 0x15,
+ LTC294X_REG_VOLTAGE_MSB = 0x08,
+ LTC294X_REG_VOLTAGE_LSB = 0x09,
+ LTC2942_REG_TEMPERATURE_MSB = 0x0C,
+ LTC2942_REG_TEMPERATURE_LSB = 0x0D,
+ LTC2943_REG_CURRENT_MSB = 0x0E,
+ LTC2943_REG_CURRENT_LSB = 0x0F,
+ LTC2943_REG_TEMPERATURE_MSB = 0x14,
+ LTC2943_REG_TEMPERATURE_LSB = 0x15,
};
-#define LTC2943_REG_CONTROL_MODE_MASK (BIT(7) | BIT(6))
-#define LTC2943_REG_CONTROL_MODE_SCAN BIT(7)
+enum ltc294x_id {
+ LTC2941_ID,
+ LTC2942_ID,
+ LTC2943_ID,
+ LTC2944_ID,
+};
+
+#define LTC2941_REG_STATUS_CHIP_ID BIT(7)
+
+#define LTC2942_REG_CONTROL_MODE_SCAN (BIT(7) | BIT(6))
+#define LTC2943_REG_CONTROL_MODE_SCAN BIT(7)
#define LTC294X_REG_CONTROL_PRESCALER_MASK (BIT(5) | BIT(4) | BIT(3))
#define LTC294X_REG_CONTROL_SHUTDOWN_MASK (BIT(0))
#define LTC294X_REG_CONTROL_PRESCALER_SET(x) \
((x << 3) & LTC294X_REG_CONTROL_PRESCALER_MASK)
#define LTC294X_REG_CONTROL_ALCC_CONFIG_DISABLED 0
-#define LTC2941_NUM_REGS 0x08
-#define LTC2943_NUM_REGS 0x18
-
struct ltc294x_info {
struct i2c_client *client; /* I2C Client pointer */
struct power_supply *supply; /* Supply pointer */
struct power_supply_desc supply_desc; /* Supply description */
struct delayed_work work; /* Work scheduler */
- unsigned long num_regs; /* Number of registers (chip type) */
+ enum ltc294x_id id; /* Chip type */
int charge; /* Last charge register content */
int r_sense; /* mOhm */
int Qlsb; /* nAh */
@@ -145,9 +149,18 @@ static int ltc294x_reset(const struct ltc294x_info *info, int prescaler_exp)
control = LTC294X_REG_CONTROL_PRESCALER_SET(prescaler_exp) |
LTC294X_REG_CONTROL_ALCC_CONFIG_DISABLED;
- /* Put the 2943 into "monitor" mode, so it measures every 10 sec */
- if (info->num_regs == LTC2943_NUM_REGS)
+ /* Put device into "monitor" mode */
+ switch (info->id) {
+ case LTC2942_ID: /* 2942 measures every 2 sec */
+ control |= LTC2942_REG_CONTROL_MODE_SCAN;
+ break;
+ case LTC2943_ID:
+ case LTC2944_ID: /* 2943 and 2944 measure every 10 sec */
control |= LTC2943_REG_CONTROL_MODE_SCAN;
+ break;
+ default:
+ break;
+ }
if (value != control) {
ret = ltc294x_write_regs(info->client,
@@ -252,7 +265,24 @@ static int ltc294x_get_voltage(const struct ltc294x_info *info, int *val)
ret = ltc294x_read_regs(info->client,
LTC294X_REG_VOLTAGE_MSB, &datar[0], 2);
value = (datar[0] << 8) | datar[1];
- *val = ((value * 23600) / 0xFFFF) * 1000; /* in uV */
+ switch (info->id) {
+ case LTC2943_ID:
+ value *= 23600 * 2;
+ value /= 0xFFFF;
+ value *= 1000 / 2;
+ break;
+ case LTC2944_ID:
+ value *= 70800 / 5*4;
+ value /= 0xFFFF;
+ value *= 1000 * 5/4;
+ break;
+ default:
+ value *= 6000 * 10;
+ value /= 0xFFFF;
+ value *= 1000 / 10;
+ break;
+ }
+ *val = value;
return ret;
}
@@ -263,27 +293,38 @@ static int ltc294x_get_current(const struct ltc294x_info *info, int *val)
s32 value;
ret = ltc294x_read_regs(info->client,
- LTC294X_REG_CURRENT_MSB, &datar[0], 2);
+ LTC2943_REG_CURRENT_MSB, &datar[0], 2);
value = (datar[0] << 8) | datar[1];
value -= 0x7FFF;
+ if (info->id == LTC2944_ID)
+ value *= 64000;
+ else
+ value *= 60000;
/* Value is in range -32k..+32k, r_sense is usually 10..50 mOhm,
* the formula below keeps everything in s32 range while preserving
* enough digits */
- *val = 1000 * ((60000 * value) / (info->r_sense * 0x7FFF)); /* in uA */
+ *val = 1000 * (value / (info->r_sense * 0x7FFF)); /* in uA */
return ret;
}
static int ltc294x_get_temperature(const struct ltc294x_info *info, int *val)
{
+ enum ltc294x_reg reg;
int ret;
u8 datar[2];
u32 value;
- ret = ltc294x_read_regs(info->client,
- LTC294X_REG_TEMPERATURE_MSB, &datar[0], 2);
- value = (datar[0] << 8) | datar[1];
- /* Full-scale is 510 Kelvin, convert to centidegrees */
- *val = (((51000 * value) / 0xFFFF) - 27215);
+ if (info->id == LTC2942_ID) {
+ reg = LTC2942_REG_TEMPERATURE_MSB;
+ value = 60000; /* Full-scale is 600 Kelvin */
+ } else {
+ reg = LTC2943_REG_TEMPERATURE_MSB;
+ value = 51000; /* Full-scale is 510 Kelvin */
+ }
+ ret = ltc294x_read_regs(info->client, reg, &datar[0], 2);
+ value *= (datar[0] << 8) | datar[1];
+ /* Convert to centidegrees */
+ *val = value / 0xFFFF - 27215;
return ret;
}
@@ -357,8 +398,8 @@ static enum power_supply_property ltc294x_properties[] = {
POWER_SUPPLY_PROP_CHARGE_COUNTER,
POWER_SUPPLY_PROP_CHARGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
- POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
};
static int ltc294x_i2c_remove(struct i2c_client *client)
@@ -375,10 +416,11 @@ static int ltc294x_i2c_probe(struct i2c_client *client,
{
struct power_supply_config psy_cfg = {};
struct ltc294x_info *info;
+ struct device_node *np;
int ret;
u32 prescaler_exp;
s32 r_sense;
- struct device_node *np;
+ u8 status;
info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
if (info == NULL)
@@ -388,7 +430,7 @@ static int ltc294x_i2c_probe(struct i2c_client *client,
np = of_node_get(client->dev.of_node);
- info->num_regs = (unsigned long)of_device_get_match_data(&client->dev);
+ info->id = (enum ltc294x_id)of_device_get_match_data(&client->dev);
info->supply_desc.name = np->name;
/* r_sense can be negative, when sense+ is connected to the battery
@@ -409,7 +451,7 @@ static int ltc294x_i2c_probe(struct i2c_client *client,
prescaler_exp = LTC2941_MAX_PRESCALER_EXP;
}
- if (info->num_regs == LTC2943_NUM_REGS) {
+ if (info->id == LTC2943_ID) {
if (prescaler_exp > LTC2943_MAX_PRESCALER_EXP)
prescaler_exp = LTC2943_MAX_PRESCALER_EXP;
info->Qlsb = ((340 * 50000) / r_sense) /
@@ -421,21 +463,39 @@ static int ltc294x_i2c_probe(struct i2c_client *client,
(128 / (1 << prescaler_exp));
}
+ /* Read status register to check for LTC2942 */
+ if (info->id == LTC2941_ID || info->id == LTC2942_ID) {
+ ret = ltc294x_read_regs(client, LTC294X_REG_STATUS, &status, 1);
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "Could not read status register\n");
+ return ret;
+ }
+ if (status & LTC2941_REG_STATUS_CHIP_ID)
+ info->id = LTC2941_ID;
+ else
+ info->id = LTC2942_ID;
+ }
+
info->client = client;
info->supply_desc.type = POWER_SUPPLY_TYPE_BATTERY;
info->supply_desc.properties = ltc294x_properties;
- if (info->num_regs >= LTC294X_REG_TEMPERATURE_LSB)
+ switch (info->id) {
+ case LTC2944_ID:
+ case LTC2943_ID:
info->supply_desc.num_properties =
ARRAY_SIZE(ltc294x_properties);
- else if (info->num_regs >= LTC294X_REG_CURRENT_LSB)
+ break;
+ case LTC2942_ID:
info->supply_desc.num_properties =
ARRAY_SIZE(ltc294x_properties) - 1;
- else if (info->num_regs >= LTC294X_REG_VOLTAGE_LSB)
- info->supply_desc.num_properties =
- ARRAY_SIZE(ltc294x_properties) - 2;
- else
+ break;
+ case LTC2941_ID:
+ default:
info->supply_desc.num_properties =
ARRAY_SIZE(ltc294x_properties) - 3;
+ break;
+ }
info->supply_desc.get_property = ltc294x_get_property;
info->supply_desc.set_property = ltc294x_set_property;
info->supply_desc.property_is_writeable = ltc294x_property_is_writeable;
@@ -492,8 +552,10 @@ static SIMPLE_DEV_PM_OPS(ltc294x_pm_ops, ltc294x_suspend, ltc294x_resume);
static const struct i2c_device_id ltc294x_i2c_id[] = {
- {"ltc2941", LTC2941_NUM_REGS},
- {"ltc2943", LTC2943_NUM_REGS},
+ { "ltc2941", LTC2941_ID, },
+ { "ltc2942", LTC2942_ID, },
+ { "ltc2943", LTC2943_ID, },
+ { "ltc2944", LTC2944_ID, },
{ },
};
MODULE_DEVICE_TABLE(i2c, ltc294x_i2c_id);
@@ -501,11 +563,19 @@ MODULE_DEVICE_TABLE(i2c, ltc294x_i2c_id);
static const struct of_device_id ltc294x_i2c_of_match[] = {
{
.compatible = "lltc,ltc2941",
- .data = (void *)LTC2941_NUM_REGS
+ .data = (void *)LTC2941_ID,
+ },
+ {
+ .compatible = "lltc,ltc2942",
+ .data = (void *)LTC2942_ID,
},
{
.compatible = "lltc,ltc2943",
- .data = (void *)LTC2943_NUM_REGS
+ .data = (void *)LTC2943_ID,
+ },
+ {
+ .compatible = "lltc,ltc2944",
+ .data = (void *)LTC2944_ID,
},
{ },
};
@@ -525,5 +595,5 @@ module_i2c_driver(ltc294x_driver);
MODULE_AUTHOR("Auryn Verwegen, Topic Embedded Systems");
MODULE_AUTHOR("Mike Looijmans, Topic Embedded Products");
-MODULE_DESCRIPTION("LTC2941/LTC2943 Battery Gas Gauge IC driver");
+MODULE_DESCRIPTION("LTC2941/LTC2942/LTC2943/LTC2944 Battery Gas Gauge IC driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/max1721x_battery.c b/drivers/power/supply/max1721x_battery.c
new file mode 100644
index 000000000000..9ee601a03d9b
--- /dev/null
+++ b/drivers/power/supply/max1721x_battery.c
@@ -0,0 +1,448 @@
+/*
+ * 1-Wire implementation for Maxim Semiconductor
+ * MAX7211/MAX17215 stanalone fuel gauge chip
+ *
+ * Copyright (C) 2017 Radioavionica Corporation
+ * Author: Alex A. Mihaylov <minimumlaw@rambler.ru>
+ *
+ * Use consistent with the GNU GPL is permitted,
+ * provided that this copyright notice is
+ * preserved in its entirety in all copies and derived works.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/w1.h>
+#include <linux/regmap.h>
+#include <linux/power_supply.h>
+
+#define W1_MAX1721X_FAMILY_ID 0x26
+#define DEF_DEV_NAME_MAX17211 "MAX17211"
+#define DEF_DEV_NAME_MAX17215 "MAX17215"
+#define DEF_DEV_NAME_UNKNOWN "UNKNOWN"
+#define DEF_MFG_NAME "MAXIM"
+
+#define PSY_MAX_NAME_LEN 32
+
+/* Number of valid register addresses in W1 mode */
+#define MAX1721X_MAX_REG_NR 0x1EF
+
+/* Factory settings (nonvilatile registers) (W1 specific) */
+#define MAX1721X_REG_NRSENSE 0x1CF /* RSense in 10^-5 Ohm */
+/* Strings */
+#define MAX1721X_REG_MFG_STR 0x1CC
+#define MAX1721X_REG_MFG_NUMB 3
+#define MAX1721X_REG_DEV_STR 0x1DB
+#define MAX1721X_REG_DEV_NUMB 5
+/* HEX Strings */
+#define MAX1721X_REG_SER_HEX 0x1D8
+
+/* MAX172XX Output Registers for W1 chips */
+#define MAX172XX_REG_STATUS 0x000 /* status reg */
+#define MAX172XX_BAT_PRESENT (1<<4) /* battery connected bit */
+#define MAX172XX_REG_DEVNAME 0x021 /* chip config */
+#define MAX172XX_DEV_MASK 0x000F /* chip type mask */
+#define MAX172X1_DEV 0x0001
+#define MAX172X5_DEV 0x0005
+#define MAX172XX_REG_TEMP 0x008 /* Temperature */
+#define MAX172XX_REG_BATT 0x0DA /* Battery voltage */
+#define MAX172XX_REG_CURRENT 0x00A /* Actual current */
+#define MAX172XX_REG_AVGCURRENT 0x00B /* Average current */
+#define MAX172XX_REG_REPSOC 0x006 /* Percentage of charge */
+#define MAX172XX_REG_DESIGNCAP 0x018 /* Design capacity */
+#define MAX172XX_REG_REPCAP 0x005 /* Average capacity */
+#define MAX172XX_REG_TTE 0x011 /* Time to empty */
+#define MAX172XX_REG_TTF 0x020 /* Time to full */
+
+struct max17211_device_info {
+ char name[PSY_MAX_NAME_LEN];
+ struct power_supply *bat;
+ struct power_supply_desc bat_desc;
+ struct device *w1_dev;
+ struct regmap *regmap;
+ /* battery design format */
+ unsigned int rsense; /* in tenths uOhm */
+ char DeviceName[2 * MAX1721X_REG_DEV_NUMB + 1];
+ char ManufacturerName[2 * MAX1721X_REG_MFG_NUMB + 1];
+ char SerialNumber[13]; /* see get_sn_str() later for comment */
+};
+
+/* Convert regs value to power_supply units */
+
+static inline int max172xx_time_to_ps(unsigned int reg)
+{
+ return reg * 5625 / 1000; /* in sec. */
+}
+
+static inline int max172xx_percent_to_ps(unsigned int reg)
+{
+ return reg / 256; /* in percent from 0 to 100 */
+}
+
+static inline int max172xx_voltage_to_ps(unsigned int reg)
+{
+ return reg * 1250; /* in uV */
+}
+
+static inline int max172xx_capacity_to_ps(unsigned int reg)
+{
+ return reg * 500; /* in uAh */
+}
+
+/*
+ * Current and temperature is signed values, so unsigned regs
+ * value must be converted to signed type
+ */
+
+static inline int max172xx_temperature_to_ps(unsigned int reg)
+{
+ int val = (int16_t)(reg);
+
+ return val * 10 / 256; /* in tenths of deg. C */
+}
+
+/*
+ * Calculating current registers resolution:
+ *
+ * RSense stored in 10^-5 Ohm, so mesaurment voltage must be
+ * in 10^-11 Volts for get current in uA.
+ * 16 bit current reg fullscale +/-51.2mV is 102400 uV.
+ * So: 102400 / 65535 * 10^5 = 156252
+ */
+static inline int max172xx_current_to_voltage(unsigned int reg)
+{
+ int val = (int16_t)(reg);
+
+ return val * 156252;
+}
+
+
+static inline struct max17211_device_info *
+to_device_info(struct power_supply *psy)
+{
+ return power_supply_get_drvdata(psy);
+}
+
+static int max1721x_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max17211_device_info *info = to_device_info(psy);
+ unsigned int reg = 0;
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ /*
+ * POWER_SUPPLY_PROP_PRESENT will always readable via
+ * sysfs interface. Value return 0 if battery not
+ * present or unaccesable via W1.
+ */
+ val->intval =
+ regmap_read(info->regmap, MAX172XX_REG_STATUS,
+ &reg) ? 0 : !(reg & MAX172XX_BAT_PRESENT);
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = regmap_read(info->regmap, MAX172XX_REG_REPSOC, &reg);
+ val->intval = max172xx_percent_to_ps(reg);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = regmap_read(info->regmap, MAX172XX_REG_BATT, &reg);
+ val->intval = max172xx_voltage_to_ps(reg);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ ret = regmap_read(info->regmap, MAX172XX_REG_DESIGNCAP, &reg);
+ val->intval = max172xx_capacity_to_ps(reg);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_AVG:
+ ret = regmap_read(info->regmap, MAX172XX_REG_REPCAP, &reg);
+ val->intval = max172xx_capacity_to_ps(reg);
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ ret = regmap_read(info->regmap, MAX172XX_REG_TTE, &reg);
+ val->intval = max172xx_time_to_ps(reg);
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
+ ret = regmap_read(info->regmap, MAX172XX_REG_TTF, &reg);
+ val->intval = max172xx_time_to_ps(reg);
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = regmap_read(info->regmap, MAX172XX_REG_TEMP, &reg);
+ val->intval = max172xx_temperature_to_ps(reg);
+ break;
+ /* We need signed current, so must cast info->rsense to signed type */
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = regmap_read(info->regmap, MAX172XX_REG_CURRENT, &reg);
+ val->intval =
+ max172xx_current_to_voltage(reg) / (int)info->rsense;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ ret = regmap_read(info->regmap, MAX172XX_REG_AVGCURRENT, &reg);
+ val->intval =
+ max172xx_current_to_voltage(reg) / (int)info->rsense;
+ break;
+ /*
+ * Strings already received and inited by probe.
+ * We do dummy read for check battery still available.
+ */
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ ret = regmap_read(info->regmap, MAX1721X_REG_DEV_STR, &reg);
+ val->strval = info->DeviceName;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ ret = regmap_read(info->regmap, MAX1721X_REG_MFG_STR, &reg);
+ val->strval = info->ManufacturerName;
+ break;
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ ret = regmap_read(info->regmap, MAX1721X_REG_SER_HEX, &reg);
+ val->strval = info->SerialNumber;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property max1721x_battery_props[] = {
+ /* int */
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ /* strings */
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+};
+
+static int get_string(struct max17211_device_info *info,
+ uint16_t reg, uint8_t nr, char *str)
+{
+ unsigned int val;
+
+ if (!str || !(reg == MAX1721X_REG_MFG_STR ||
+ reg == MAX1721X_REG_DEV_STR))
+ return -EFAULT;
+
+ while (nr--) {
+ if (regmap_read(info->regmap, reg++, &val))
+ return -EFAULT;
+ *str++ = val>>8 & 0x00FF;
+ *str++ = val & 0x00FF;
+ }
+ return 0;
+}
+
+/* Maxim say: Serial number is a hex string up to 12 hex characters */
+static int get_sn_string(struct max17211_device_info *info, char *str)
+{
+ unsigned int val[3];
+
+ if (!str)
+ return -EFAULT;
+
+ if (regmap_read(info->regmap, MAX1721X_REG_SER_HEX, &val[0]))
+ return -EFAULT;
+ if (regmap_read(info->regmap, MAX1721X_REG_SER_HEX + 1, &val[1]))
+ return -EFAULT;
+ if (regmap_read(info->regmap, MAX1721X_REG_SER_HEX + 2, &val[2]))
+ return -EFAULT;
+
+ snprintf(str, 13, "%04X%04X%04X", val[0], val[1], val[2]);
+ return 0;
+}
+
+/*
+ * MAX1721x registers description for w1-regmap
+ */
+static const struct regmap_range max1721x_allow_range[] = {
+ regmap_reg_range(0, 0xDF), /* volatile data */
+ regmap_reg_range(0x180, 0x1DF), /* non-volatile memory */
+ regmap_reg_range(0x1E0, 0x1EF), /* non-volatile history (unused) */
+};
+
+static const struct regmap_range max1721x_deny_range[] = {
+ /* volatile data unused registers */
+ regmap_reg_range(0x24, 0x26),
+ regmap_reg_range(0x30, 0x31),
+ regmap_reg_range(0x33, 0x34),
+ regmap_reg_range(0x37, 0x37),
+ regmap_reg_range(0x3B, 0x3C),
+ regmap_reg_range(0x40, 0x41),
+ regmap_reg_range(0x43, 0x44),
+ regmap_reg_range(0x47, 0x49),
+ regmap_reg_range(0x4B, 0x4C),
+ regmap_reg_range(0x4E, 0xAF),
+ regmap_reg_range(0xB1, 0xB3),
+ regmap_reg_range(0xB5, 0xB7),
+ regmap_reg_range(0xBF, 0xD0),
+ regmap_reg_range(0xDB, 0xDB),
+ /* hole between volatile and non-volatile registers */
+ regmap_reg_range(0xE0, 0x17F),
+};
+
+static const struct regmap_access_table max1721x_regs = {
+ .yes_ranges = max1721x_allow_range,
+ .n_yes_ranges = ARRAY_SIZE(max1721x_allow_range),
+ .no_ranges = max1721x_deny_range,
+ .n_no_ranges = ARRAY_SIZE(max1721x_deny_range),
+};
+
+/*
+ * Model Gauge M5 Algorithm output register
+ * Volatile data (must not be cached)
+ */
+static const struct regmap_range max1721x_volatile_allow[] = {
+ regmap_reg_range(0, 0xDF),
+};
+
+static const struct regmap_access_table max1721x_volatile_regs = {
+ .yes_ranges = max1721x_volatile_allow,
+ .n_yes_ranges = ARRAY_SIZE(max1721x_volatile_allow),
+};
+
+/*
+ * W1-regmap config
+ */
+static const struct regmap_config max1721x_regmap_w1_config = {
+ .reg_bits = 16,
+ .val_bits = 16,
+ .rd_table = &max1721x_regs,
+ .volatile_table = &max1721x_volatile_regs,
+ .max_register = MAX1721X_MAX_REG_NR,
+};
+
+static int devm_w1_max1721x_add_device(struct w1_slave *sl)
+{
+ struct power_supply_config psy_cfg = {};
+ struct max17211_device_info *info;
+
+ info = devm_kzalloc(&sl->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ sl->family_data = (void *)info;
+ info->w1_dev = &sl->dev;
+
+ /*
+ * power_supply class battery name translated from W1 slave device
+ * unical ID (look like 26-0123456789AB) to "max1721x-0123456789AB\0"
+ * so, 26 (device family) correcpondent to max1721x devices.
+ * Device name still unical for any numbers connected devices.
+ */
+ snprintf(info->name, sizeof(info->name),
+ "max1721x-%012X", (unsigned int)sl->reg_num.id);
+ info->bat_desc.name = info->name;
+
+ /*
+ * FixMe: battery device name exceed max len for thermal_zone device
+ * name and translation to thermal_zone must be disabled.
+ */
+ info->bat_desc.no_thermal = true;
+ info->bat_desc.type = POWER_SUPPLY_TYPE_BATTERY;
+ info->bat_desc.properties = max1721x_battery_props;
+ info->bat_desc.num_properties = ARRAY_SIZE(max1721x_battery_props);
+ info->bat_desc.get_property = max1721x_battery_get_property;
+ psy_cfg.drv_data = info;
+
+ /* regmap init */
+ info->regmap = devm_regmap_init_w1(info->w1_dev,
+ &max1721x_regmap_w1_config);
+ if (IS_ERR(info->regmap)) {
+ int err = PTR_ERR(info->regmap);
+
+ dev_err(info->w1_dev, "Failed to allocate register map: %d\n",
+ err);
+ return err;
+ }
+
+ /* rsense init */
+ info->rsense = 0;
+ if (regmap_read(info->regmap, MAX1721X_REG_NRSENSE, &info->rsense)) {
+ dev_err(info->w1_dev, "Can't read RSense. Hardware error.\n");
+ return -ENODEV;
+ }
+
+ if (!info->rsense) {
+ dev_warn(info->w1_dev, "RSenese not calibrated, set 10 mOhms!\n");
+ info->rsense = 1000; /* in regs in 10^-5 */
+ }
+ dev_info(info->w1_dev, "RSense: %d mOhms.\n", info->rsense / 100);
+
+ if (get_string(info, MAX1721X_REG_MFG_STR,
+ MAX1721X_REG_MFG_NUMB, info->ManufacturerName)) {
+ dev_err(info->w1_dev, "Can't read manufacturer. Hardware error.\n");
+ return -ENODEV;
+ }
+
+ if (!info->ManufacturerName[0])
+ strncpy(info->ManufacturerName, DEF_MFG_NAME,
+ 2 * MAX1721X_REG_MFG_NUMB);
+
+ if (get_string(info, MAX1721X_REG_DEV_STR,
+ MAX1721X_REG_DEV_NUMB, info->DeviceName)) {
+ dev_err(info->w1_dev, "Can't read device. Hardware error.\n");
+ return -ENODEV;
+ }
+ if (!info->DeviceName[0]) {
+ unsigned int dev_name;
+
+ if (regmap_read(info->regmap,
+ MAX172XX_REG_DEVNAME, &dev_name)) {
+ dev_err(info->w1_dev, "Can't read device name reg.\n");
+ return -ENODEV;
+ }
+
+ switch (dev_name & MAX172XX_DEV_MASK) {
+ case MAX172X1_DEV:
+ strncpy(info->DeviceName, DEF_DEV_NAME_MAX17211,
+ 2 * MAX1721X_REG_DEV_NUMB);
+ break;
+ case MAX172X5_DEV:
+ strncpy(info->DeviceName, DEF_DEV_NAME_MAX17215,
+ 2 * MAX1721X_REG_DEV_NUMB);
+ break;
+ default:
+ strncpy(info->DeviceName, DEF_DEV_NAME_UNKNOWN,
+ 2 * MAX1721X_REG_DEV_NUMB);
+ }
+ }
+
+ if (get_sn_string(info, info->SerialNumber)) {
+ dev_err(info->w1_dev, "Can't read serial. Hardware error.\n");
+ return -ENODEV;
+ }
+
+ info->bat = devm_power_supply_register(&sl->dev, &info->bat_desc,
+ &psy_cfg);
+ if (IS_ERR(info->bat)) {
+ dev_err(info->w1_dev, "failed to register battery\n");
+ return PTR_ERR(info->bat);
+ }
+
+ return 0;
+}
+
+static struct w1_family_ops w1_max1721x_fops = {
+ .add_slave = devm_w1_max1721x_add_device,
+};
+
+static struct w1_family w1_max1721x_family = {
+ .fid = W1_MAX1721X_FAMILY_ID,
+ .fops = &w1_max1721x_fops,
+};
+
+module_w1_family(w1_max1721x_family);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alex A. Mihaylov <minimumlaw@rambler.ru>");
+MODULE_DESCRIPTION("Maxim MAX17211/MAX17215 Fuel Gauage IC driver");
+MODULE_ALIAS("w1-family-" __stringify(W1_MAX1721X_FAMILY_ID));
diff --git a/drivers/power/supply/pcf50633-charger.c b/drivers/power/supply/pcf50633-charger.c
index b3c1873ad84d..1ad7ccce6075 100644
--- a/drivers/power/supply/pcf50633-charger.c
+++ b/drivers/power/supply/pcf50633-charger.c
@@ -254,7 +254,7 @@ static struct attribute *pcf50633_mbc_sysfs_entries[] = {
NULL,
};
-static struct attribute_group mbc_attr_group = {
+static const struct attribute_group mbc_attr_group = {
.name = NULL, /* put in device directory */
.attrs = pcf50633_mbc_sysfs_entries,
};
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index f7059459f0fb..b19a73176910 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -12,25 +12,21 @@
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
+#include <linux/delay.h>
#include <linux/err.h>
-#include <linux/power_supply.h>
+#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
-#include <linux/slab.h>
+#include <linux/init.h>
#include <linux/interrupt.h>
-#include <linux/gpio/consumer.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/of.h>
-#include <linux/stat.h>
-
#include <linux/power/sbs-battery.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
enum {
REG_MANUFACTURER_DATA,
@@ -60,8 +56,8 @@ enum {
#define BATTERY_MODE_OFFSET 0x03
#define BATTERY_MODE_MASK 0x8000
enum sbs_battery_mode {
- BATTERY_MODE_AMPS,
- BATTERY_MODE_WATTS
+ BATTERY_MODE_AMPS = 0,
+ BATTERY_MODE_WATTS = 0x8000
};
/* manufacturer access defines */
@@ -532,6 +528,8 @@ static enum sbs_battery_mode sbs_set_battery_mode(struct i2c_client *client,
if (ret < 0)
return ret;
+ usleep_range(1000, 2000);
+
return original_val & BATTERY_MODE_MASK;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 14:15:28 +0000