mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 00:21:59 +00:00
bq27x00: Prepare code for addition of bq27000 platform driver
This patch simplifies the drivers data structure and moves code to be shared by the bq27000 and bq27200/bq27500 init functions into a common function. This patch has no functional changes, it only moves code around. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Rodolfo Giometti <giometti@linux.it> Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This commit is contained in:
Lars-Peter Clausen
parent
3413b4ea25
commit
a40402ef0b
@ -54,8 +54,8 @@ static DEFINE_MUTEX(battery_mutex);
|
||||
|
||||
struct bq27x00_device_info;
|
||||
struct bq27x00_access_methods {
|
||||
int (*read)(u8 reg, int *rt_value, int b_single,
|
||||
struct bq27x00_device_info *di);
|
||||
int (*read)(struct bq27x00_device_info *, u8 reg, int *rt_value,
|
||||
bool single);
|
||||
};
|
||||
|
||||
enum bq27x00_chip { BQ27000, BQ27500 };
|
||||
@ -63,11 +63,11 @@ enum bq27x00_chip { BQ27000, BQ27500 };
|
||||
struct bq27x00_device_info {
|
||||
struct device *dev;
|
||||
int id;
|
||||
struct bq27x00_access_methods *bus;
|
||||
struct power_supply bat;
|
||||
enum bq27x00_chip chip;
|
||||
|
||||
struct i2c_client *client;
|
||||
struct power_supply bat;
|
||||
|
||||
struct bq27x00_access_methods bus;
|
||||
};
|
||||
|
||||
static enum power_supply_property bq27x00_battery_props[] = {
|
||||
@ -87,10 +87,10 @@ static enum power_supply_property bq27x00_battery_props[] = {
|
||||
* Common code for BQ27x00 devices
|
||||
*/
|
||||
|
||||
static int bq27x00_read(u8 reg, int *rt_value, int b_single,
|
||||
struct bq27x00_device_info *di)
|
||||
static inline int bq27x00_read(struct bq27x00_device_info *di, u8 reg,
|
||||
int *rt_value, bool single)
|
||||
{
|
||||
return di->bus->read(reg, rt_value, b_single, di);
|
||||
return di->bus.read(di, reg, rt_value, single);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -102,7 +102,7 @@ static int bq27x00_battery_temperature(struct bq27x00_device_info *di)
|
||||
int ret;
|
||||
int temp = 0;
|
||||
|
||||
ret = bq27x00_read(BQ27x00_REG_TEMP, &temp, 0, di);
|
||||
ret = bq27x00_read(di, BQ27x00_REG_TEMP, &temp, false);
|
||||
if (ret) {
|
||||
dev_err(di->dev, "error reading temperature\n");
|
||||
return ret;
|
||||
@ -123,7 +123,7 @@ static int bq27x00_battery_voltage(struct bq27x00_device_info *di)
|
||||
int ret;
|
||||
int volt = 0;
|
||||
|
||||
ret = bq27x00_read(BQ27x00_REG_VOLT, &volt, 0, di);
|
||||
ret = bq27x00_read(di, BQ27x00_REG_VOLT, &volt, false);
|
||||
if (ret) {
|
||||
dev_err(di->dev, "error reading voltage\n");
|
||||
return ret;
|
||||
@ -143,7 +143,7 @@ static int bq27x00_battery_current(struct bq27x00_device_info *di)
|
||||
int curr = 0;
|
||||
int flags = 0;
|
||||
|
||||
ret = bq27x00_read(BQ27x00_REG_AI, &curr, 0, di);
|
||||
ret = bq27x00_read(di, BQ27x00_REG_AI, &curr, false);
|
||||
if (ret) {
|
||||
dev_err(di->dev, "error reading current\n");
|
||||
return 0;
|
||||
@ -153,7 +153,7 @@ static int bq27x00_battery_current(struct bq27x00_device_info *di)
|
||||
/* bq27500 returns signed value */
|
||||
curr = (int)((s16)curr) * 1000;
|
||||
} else {
|
||||
ret = bq27x00_read(BQ27x00_REG_FLAGS, &flags, 0, di);
|
||||
ret = bq27x00_read(di, BQ27x00_REG_FLAGS, &flags, false);
|
||||
if (ret < 0) {
|
||||
dev_err(di->dev, "error reading flags\n");
|
||||
return 0;
|
||||
@ -178,9 +178,9 @@ static int bq27x00_battery_rsoc(struct bq27x00_device_info *di)
|
||||
int rsoc = 0;
|
||||
|
||||
if (di->chip == BQ27500)
|
||||
ret = bq27x00_read(BQ27500_REG_SOC, &rsoc, 0, di);
|
||||
ret = bq27x00_read(di, BQ27500_REG_SOC, &rsoc, false);
|
||||
else
|
||||
ret = bq27x00_read(BQ27000_REG_RSOC, &rsoc, 1, di);
|
||||
ret = bq27x00_read(di, BQ27000_REG_RSOC, &rsoc, true);
|
||||
if (ret) {
|
||||
dev_err(di->dev, "error reading relative State-of-Charge\n");
|
||||
return ret;
|
||||
@ -196,7 +196,7 @@ static int bq27x00_battery_status(struct bq27x00_device_info *di,
|
||||
int status;
|
||||
int ret;
|
||||
|
||||
ret = bq27x00_read(BQ27x00_REG_FLAGS, &flags, 0, di);
|
||||
ret = bq27x00_read(di, BQ27x00_REG_FLAGS, &flags, false);
|
||||
if (ret < 0) {
|
||||
dev_err(di->dev, "error reading flags\n");
|
||||
return ret;
|
||||
@ -230,7 +230,7 @@ static int bq27x00_battery_time(struct bq27x00_device_info *di, int reg,
|
||||
int tval = 0;
|
||||
int ret;
|
||||
|
||||
ret = bq27x00_read(reg, &tval, 0, di);
|
||||
ret = bq27x00_read(di, reg, &tval, false);
|
||||
if (ret) {
|
||||
dev_err(di->dev, "error reading register %02x\n", reg);
|
||||
return ret;
|
||||
@ -296,23 +296,35 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void bq27x00_powersupply_init(struct bq27x00_device_info *di)
|
||||
static int bq27x00_powersupply_init(struct bq27x00_device_info *di)
|
||||
{
|
||||
int ret;
|
||||
|
||||
di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
|
||||
di->bat.properties = bq27x00_battery_props;
|
||||
di->bat.num_properties = ARRAY_SIZE(bq27x00_battery_props);
|
||||
di->bat.get_property = bq27x00_battery_get_property;
|
||||
di->bat.external_power_changed = NULL;
|
||||
|
||||
ret = power_supply_register(di->dev, &di->bat);
|
||||
if (ret) {
|
||||
dev_err(di->dev, "failed to register battery: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
dev_info(di->dev, "support ver. %s enabled\n", DRIVER_VERSION);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* i2c specific code
|
||||
*/
|
||||
|
||||
static int bq27x00_read_i2c(u8 reg, int *rt_value, int b_single,
|
||||
struct bq27x00_device_info *di)
|
||||
static int bq27x00_read_i2c(struct bq27x00_device_info *di, u8 reg,
|
||||
int *rt_value, bool single)
|
||||
{
|
||||
struct i2c_client *client = di->client;
|
||||
struct i2c_client *client = to_i2c_client(di->dev);
|
||||
struct i2c_msg msg[1];
|
||||
unsigned char data[2];
|
||||
int err;
|
||||
@ -329,7 +341,7 @@ static int bq27x00_read_i2c(u8 reg, int *rt_value, int b_single,
|
||||
err = i2c_transfer(client->adapter, msg, 1);
|
||||
|
||||
if (err >= 0) {
|
||||
if (!b_single)
|
||||
if (!single)
|
||||
msg->len = 2;
|
||||
else
|
||||
msg->len = 1;
|
||||
@ -337,7 +349,7 @@ static int bq27x00_read_i2c(u8 reg, int *rt_value, int b_single,
|
||||
msg->flags = I2C_M_RD;
|
||||
err = i2c_transfer(client->adapter, msg, 1);
|
||||
if (err >= 0) {
|
||||
if (!b_single)
|
||||
if (!single)
|
||||
*rt_value = get_unaligned_le16(data);
|
||||
else
|
||||
*rt_value = data[0];
|
||||
@ -353,7 +365,6 @@ static int bq27x00_battery_probe(struct i2c_client *client,
|
||||
{
|
||||
char *name;
|
||||
struct bq27x00_device_info *di;
|
||||
struct bq27x00_access_methods *bus;
|
||||
int num;
|
||||
int retval = 0;
|
||||
|
||||
@ -380,38 +391,20 @@ static int bq27x00_battery_probe(struct i2c_client *client,
|
||||
retval = -ENOMEM;
|
||||
goto batt_failed_2;
|
||||
}
|
||||
di->id = num;
|
||||
di->chip = id->driver_data;
|
||||
|
||||
bus = kzalloc(sizeof(*bus), GFP_KERNEL);
|
||||
if (!bus) {
|
||||
dev_err(&client->dev, "failed to allocate access method "
|
||||
"data\n");
|
||||
retval = -ENOMEM;
|
||||
di->id = num;
|
||||
di->dev = &client->dev;
|
||||
di->chip = id->driver_data;
|
||||
di->bat.name = name;
|
||||
di->bus.read = &bq27x00_read_i2c;
|
||||
|
||||
if (bq27x00_powersupply_init(di))
|
||||
goto batt_failed_3;
|
||||
}
|
||||
|
||||
i2c_set_clientdata(client, di);
|
||||
di->dev = &client->dev;
|
||||
di->bat.name = name;
|
||||
bus->read = &bq27x00_read_i2c;
|
||||
di->bus = bus;
|
||||
di->client = client;
|
||||
|
||||
bq27x00_powersupply_init(di);
|
||||
|
||||
retval = power_supply_register(&client->dev, &di->bat);
|
||||
if (retval) {
|
||||
dev_err(&client->dev, "failed to register battery\n");
|
||||
goto batt_failed_4;
|
||||
}
|
||||
|
||||
dev_info(&client->dev, "support ver. %s enabled\n", DRIVER_VERSION);
|
||||
|
||||
return 0;
|
||||
|
||||
batt_failed_4:
|
||||
kfree(bus);
|
||||
batt_failed_3:
|
||||
kfree(di);
|
||||
batt_failed_2:
|
||||
@ -430,7 +423,6 @@ static int bq27x00_battery_remove(struct i2c_client *client)
|
||||
|
||||
power_supply_unregister(&di->bat);
|
||||
|
||||
kfree(di->bus);
|
||||
kfree(di->bat.name);
|
||||
|
||||
mutex_lock(&battery_mutex);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user