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linux: up-device-supply-battery: Allow skipping start or end charging threshold setting

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This allows the one of charge_control_start|end_threshold can be ignored
by a "_" character.
The udev hwdb can be set in the following format.

- Skip charging start limit
CHARGE_LIMIT=_,80
- Skip charging end limit
CHARGE_LIMIT=30,_
This commit is contained in:
Kate Hsuan 2024-08-20 16:18:28 +08:00
parent 4e8e8b43f8
commit 5882721f19
2 changed files with 31 additions and 11 deletions
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5
rules/60-upower-battery.hwdb
View file

@ -25,6 +25,11 @@
# systemd-hwdb update
# udevadm trigger -v -p /sys/class/power_supply/BAT
# where BAT is the battery in question.
#
# CHARGE_LIMIT is in tuple format and each of the variables can be disabled by "_" character.
# For example:
# CHARGE_LIMIT=60,80 (charge_control_start_threshold is 60 and charge_control_end_threshold is 80.)
# CHARGE_LIMIT=_,80 (charge_control_start_threshold will be skipped and charge_control_end_threshold is 80.)
battery:*:*:dmi:*
CHARGE_LIMIT=60,80

37
src/linux/up-device-supply-battery.c
View file

@ -163,12 +163,18 @@ up_device_supply_battery_get_charge_control_limits (GUdevDevice *native, UpBatte
return FALSE;
}
if (!up_device_supply_battery_convert_to_double (pairs[0], &charge_control_start_threshold)) {
if (g_strcmp0 (pairs[0], "_") == 0) {
g_debug ("charge_control_start_threshold is disabled");
charge_control_start_threshold = G_MAXUINT;
} else if (!up_device_supply_battery_convert_to_double (pairs[0], &charge_control_start_threshold)) {
g_warning ("failed to convert charge_control_start_threshold: %s", pairs[0]);
return FALSE;
}
if (!up_device_supply_battery_convert_to_double (pairs[1], &charge_control_end_threshold)) {
if (g_strcmp0 (pairs[1], "_") == 0) {
g_debug ("charge_control_end_threshold is disabled");
charge_control_end_threshold = G_MAXUINT;
} else if (!up_device_supply_battery_convert_to_double (pairs[1], &charge_control_end_threshold)) {
g_warning ("failed to convert charge_control_start_threshold: %s", pairs[0]);
return FALSE;
}
@ -401,16 +407,25 @@ up_device_supply_battery_set_battery_charge_thresholds(UpDevice *device, guint s
start_filename = g_build_filename (native_path, "charge_control_start_threshold", NULL);
end_filename = g_build_filename (native_path, "charge_control_end_threshold", NULL);
g_string_printf (start_str, "%d", CLAMP (start, 0, 100));
g_string_printf (end_str, "%d", CLAMP (end, 0, 100));
if (start != G_MAXUINT) {
g_string_printf (start_str, "%d", CLAMP (start, 0, 100));
if (!g_file_set_contents_full (start_filename, start_str->str, start_str->len,
G_FILE_SET_CONTENTS_ONLY_EXISTING, 0644, error)) {
return FALSE;
}
} else {
g_debug ("Ignore charge_control_start_threshold setting");
}
if (!g_file_set_contents_full (start_filename, start_str->str, start_str->len,
G_FILE_SET_CONTENTS_ONLY_EXISTING, 0644, error))
return FALSE;
if (!g_file_set_contents_full (end_filename, end_str->str, end_str->len,
G_FILE_SET_CONTENTS_ONLY_EXISTING, 0644, error))
return FALSE;
if (end != G_MAXUINT) {
g_string_printf (end_str, "%d", CLAMP (end, 0, 100));
if (!g_file_set_contents_full (end_filename, end_str->str, end_str->len,
G_FILE_SET_CONTENTS_ONLY_EXISTING, 0644, error)) {
return FALSE;
}
} else {
g_debug ("Ignore charge_control_end_threshold setting");
}
return TRUE;
}