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authorAndres Salomon <dilinger@queued.net>2007-12-12 14:12:56 -0500
committerAnton Vorontsov <cbouatmailru@gmail.com>2008-02-02 02:42:59 +0300
commit8efe444038a205e79b38b7ad03878824901849a8 (patch)
treeaf3fdf3d84059577ba86630103ae6adbb7d885a3 /Documentation/power_supply_class.txt
parent4d24473c435c7c3ad7b43e43b70cdb16aba25443 (diff)
power: remove POWER_SUPPLY_PROP_CAPACITY_LEVEL
The CAPACITY_LEVEL stuff defines various levels of charge; however, what is the difference between them? What differentiates between HIGH and NORMAL, LOW and CRITICAL, etc? As it appears that these are fairly arbitrary, we end up making such policy decisions in the kernel (or in hardware). This is the sort of decision that should be made in userspace, not in the kernel. If the hardware does not support _CAPACITY and it cannot be easily calculated, then perhaps the driver should register a custom CAPACITY_LEVEL attribute; however, userspace should not become accustomed to looking for such a thing, and we should certainly not encourage drivers to provide CAPACITY_LEVEL stubs. The following removes support for POWER_SUPPLY_PROP_CAPACITY_LEVEL. The OLPC battery driver is the only driver making use of this, so it's removed from there as well. Signed-off-by: Andres Salomon <dilinger@debian.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'Documentation/power_supply_class.txt')
-rw-r--r--Documentation/power_supply_class.txt2
1 files changed, 0 insertions, 2 deletions
diff --git a/Documentation/power_supply_class.txt b/Documentation/power_supply_class.txt
index 9758cf433c0..a032c316b3b 100644
--- a/Documentation/power_supply_class.txt
+++ b/Documentation/power_supply_class.txt
@@ -100,8 +100,6 @@ age)". I.e. these attributes represents real thresholds, not design values.
ENERGY_FULL, ENERGY_EMPTY - same as above but for energy.
CAPACITY - capacity in percents.
-CAPACITY_LEVEL - capacity level. This corresponds to
-POWER_SUPPLY_CAPACITY_LEVEL_*.
TEMP - temperature of the power supply.
TEMP_AMBIENT - ambient temperature.