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power: Linux /sys/class testing should skip "device" scopes. 

(the PS4 game controllers report their batteries through this interface, which
is cool, but not helpful for powering the rest of the system.  :)   )
This commit is contained in:
Ryan C. Gordon 2017-07-03 16:38:37 -04:00
parent 9f99b3d7ee
commit c27dc51478
1 changed files with 10 additions and 0 deletions
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10
src/power/linux/SDL_syspower.c
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@ -460,6 +460,16 @@ SDL_GetPowerInfo_Linux_sys_class_power_supply(SDL_PowerState *state, int *second
continue; /* we don't care about UPS and such. */ continue; /* we don't care about UPS and such. */
} }
/* if the scope is "device," it might be something like a PS4
controller reporting its own battery, and not something that powers
the system. Most system batteries don't list a scope at all; we
assume it's a system battery if not specified. */
if (read_power_file(base, name, "scope", str, sizeof (str))) {
if (SDL_strcmp(str, "device\n") != 0) {
continue; /* skip external devices with their own batteries. */
}
}
/* some drivers don't offer this, so if it's not explicitly reported assume it's present. */ /* some drivers don't offer this, so if it's not explicitly reported assume it's present. */
if (read_power_file(base, name, "present", str, sizeof (str)) && (SDL_strcmp(str, "0\n") == 0)) { if (read_power_file(base, name, "present", str, sizeof (str)) && (SDL_strcmp(str, "0\n") == 0)) {
st = SDL_POWERSTATE_NO_BATTERY; st = SDL_POWERSTATE_NO_BATTERY;