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linux: Detect the battery of bluetooth input devices

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Check the input subdevices of the bluetooth parent device of a battery, if
present. If there is mouse* input child device, is a mouse battery; otherwise,
it is a keyboard battery. This also fixes the PowerSupply attribute for these
to be false, as the batteries of wireless input devices don't power the system.

https://launchpad.net/bugs/1153488

Signed-Off-By: Martin Pitt <martin.pitt@ubuntu.com>
This commit is contained in:
Shih-Yuan Lee (FourDollars) 2013-09-06 14:26:24 +02:00 • committed by Martin Pitt
parent 09d41eb759
commit 5c0a57cfa0
1 changed files with 50 additions and 1 deletions
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51
src/linux/up-device-supply.c
View file

@ -864,10 +864,16 @@ up_device_supply_coldplug (UpDevice *device)
{
UpDeviceSupply *supply = UP_DEVICE_SUPPLY (device);
gboolean ret = FALSE;
GUdevDevice *bluetooth;
GUdevDevice *native;
const gchar *file;
const gchar *device_path = NULL;
const gchar *native_path;
const gchar *scope;
gchar *device_type = NULL;
gchar *input_path = NULL;
GDir *dir = NULL;
GError *error = NULL;
UpDeviceKind type = UP_DEVICE_KIND_UNKNOWN;
up_device_supply_reset_values (supply);
@ -897,7 +903,50 @@ up_device_supply_coldplug (UpDevice *device)
if (g_ascii_strcasecmp (device_type, "mains") == 0) {
type = UP_DEVICE_KIND_LINE_POWER;
} else if (g_ascii_strcasecmp (device_type, "battery") == 0) {
type = UP_DEVICE_KIND_BATTERY;
/* Detect if the battery comes from bluetooth keyboard or mouse. */
bluetooth = g_udev_device_get_parent_with_subsystem (native, "bluetooth", NULL);
if (bluetooth != NULL) {
device_path = g_udev_device_get_sysfs_path (bluetooth);
if ((dir = g_dir_open (device_path, 0, &error))) {
while ((file = g_dir_read_name (dir))) {
/* Check if it is an input device. */
if (g_str_has_prefix (file, "input")) {
input_path = g_build_filename (device_path, file, NULL);
break;
}
}
g_dir_close (dir);
} else {
g_warning ("Can not open folder %s: %s", device_path, error->message);
g_error_free (error);
}
g_object_unref (bluetooth);
}
if (input_path != NULL) {
if ((dir = g_dir_open (input_path, 0, &error))) {
while ((file = g_dir_read_name (dir))) {
/* Check if it is a mouse device. */
if (g_str_has_prefix (file, "mouse")) {
type = UP_DEVICE_KIND_MOUSE;
break;
}
}
g_dir_close (dir);
} else {
g_warning ("Can not open folder %s: %s", input_path, error->message);
g_error_free (error);
}
g_free (input_path);
if (type == UP_DEVICE_KIND_UNKNOWN) {
type = UP_DEVICE_KIND_KEYBOARD;
}
}
if (type == UP_DEVICE_KIND_UNKNOWN) {
type = UP_DEVICE_KIND_BATTERY;
}
} else if (g_ascii_strcasecmp (device_type, "USB") == 0) {
/* use a heuristic to find the device type */