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authorPali Rohár <pali.rohar@gmail.com>2013-02-10 18:32:18 +0100
committerAnton Vorontsov <anton@enomsg.org>2013-02-16 13:34:10 -0800
commitac6324e7021dfa917ce4f9a836318c3e46fbb84e (patch)
tree74dcd582e083fbf8c82e3146e89b84bb6e8d1295
parent64d26f225fefe06c870634e7bfe026a063e7f776 (diff)
downloadop-kernel-dev-ac6324e7021dfa917ce4f9a836318c3e46fbb84e.zip
op-kernel-dev-ac6324e7021dfa917ce4f9a836318c3e46fbb84e.tar.gz
bq2415x_charger: Add support for offline and 100mA mode
* Renamed mode BQ2415X_MODE_NONE to BQ2415X_MODE_OFF because this mode turning chaging completly off * Added new mode BQ2415X_MODE_NONE which enable charging with maximal current limit 100mA (this is minimal safe value for bq2415x chips) Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org>
-rw-r--r--drivers/power/bq2415x_charger.c25
-rw-r--r--include/linux/power/bq2415x_charger.h3
2 files changed, 20 insertions, 8 deletions
diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c
index ca70365..ca91396 100644
--- a/drivers/power/bq2415x_charger.c
+++ b/drivers/power/bq2415x_charger.c
@@ -733,12 +733,10 @@ static int bq2415x_set_mode(struct bq2415x_device *bq, enum bq2415x_mode mode)
int charger = 0;
int boost = 0;
- if (mode == BQ2415X_MODE_HOST_CHARGER ||
- mode == BQ2415X_MODE_DEDICATED_CHARGER)
- charger = 1;
-
if (mode == BQ2415X_MODE_BOOST)
boost = 1;
+ else if (mode != BQ2415X_MODE_OFF)
+ charger = 1;
if (!charger)
ret = bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE);
@@ -750,6 +748,10 @@ static int bq2415x_set_mode(struct bq2415x_device *bq, enum bq2415x_mode mode)
return ret;
switch (mode) {
+ case BQ2415X_MODE_OFF:
+ dev_dbg(bq->dev, "changing mode to: Offline\n");
+ ret = bq2415x_set_current_limit(bq, 100);
+ break;
case BQ2415X_MODE_NONE:
dev_dbg(bq->dev, "changing mode to: N/A\n");
ret = bq2415x_set_current_limit(bq, 100);
@@ -842,7 +844,7 @@ static void bq2415x_timer_error(struct bq2415x_device *bq, const char *msg)
dev_err(bq->dev, "%s\n", msg);
if (bq->automode > 0)
bq->automode = 0;
- bq2415x_set_mode(bq, BQ2415X_MODE_NONE);
+ bq2415x_set_mode(bq, BQ2415X_MODE_OFF);
bq2415x_set_autotimer(bq, 0);
}
@@ -1135,6 +1137,10 @@ static ssize_t bq2415x_sysfs_set_mode(struct device *dev,
return -ENOSYS;
bq->automode = 1;
mode = bq->reported_mode;
+ } else if (strncmp(buf, "off", 3) == 0) {
+ if (bq->automode > 0)
+ bq->automode = 0;
+ mode = BQ2415X_MODE_OFF;
} else if (strncmp(buf, "none", 4) == 0) {
if (bq->automode > 0)
bq->automode = 0;
@@ -1182,6 +1188,9 @@ static ssize_t bq2415x_sysfs_show_mode(struct device *dev,
ret += sprintf(buf+ret, "auto (");
switch (bq->mode) {
+ case BQ2415X_MODE_OFF:
+ ret += sprintf(buf+ret, "off");
+ break;
case BQ2415X_MODE_NONE:
ret += sprintf(buf+ret, "none");
break;
@@ -1216,6 +1225,8 @@ static ssize_t bq2415x_sysfs_show_reported_mode(struct device *dev,
return -EINVAL;
switch (bq->reported_mode) {
+ case BQ2415X_MODE_OFF:
+ return sprintf(buf, "off\n");
case BQ2415X_MODE_NONE:
return sprintf(buf, "none\n");
case BQ2415X_MODE_HOST_CHARGER:
@@ -1535,8 +1546,8 @@ static int bq2415x_probe(struct i2c_client *client,
bq->dev = &client->dev;
bq->chip = id->driver_data;
bq->name = name;
- bq->mode = BQ2415X_MODE_NONE;
- bq->reported_mode = BQ2415X_MODE_NONE;
+ bq->mode = BQ2415X_MODE_OFF;
+ bq->reported_mode = BQ2415X_MODE_OFF;
bq->autotimer = 0;
bq->automode = 0;
diff --git a/include/linux/power/bq2415x_charger.h b/include/linux/power/bq2415x_charger.h
index 97a1665..8dcc0f4 100644
--- a/include/linux/power/bq2415x_charger.h
+++ b/include/linux/power/bq2415x_charger.h
@@ -75,7 +75,8 @@
/* Supported modes with maximal current limit */
enum bq2415x_mode {
- BQ2415X_MODE_NONE, /* unknown or no charger (100mA) */
+ BQ2415X_MODE_OFF, /* offline mode (charger disabled) */
+ BQ2415X_MODE_NONE, /* unknown charger (100mA) */
BQ2415X_MODE_HOST_CHARGER, /* usb host/hub charger (500mA) */
BQ2415X_MODE_DEDICATED_CHARGER, /* dedicated charger (unlimited) */
BQ2415X_MODE_BOOST, /* boost mode (charging disabled) */
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