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pinctrl: clarify idle vs sleep states 

This pure documentation fix tries to align the "idle" and
"sleep" pin states to the idle and suspend states from
runtime PM.

Cc: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2012-09-26 14:59:47 +02:00
parent 95f0bc9bf0
commit b0e181d094
1 changed files with 10 additions and 5 deletions
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15
include/linux/pinctrl/pinctrl-state.h
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@ -6,13 +6,18 @@
* @PINCTRL_STATE_DEFAULT: the state the pinctrl handle shall be put
* into as default, usually this means the pins are up and ready to
* be used by the device driver. This state is commonly used by
* hogs to configure muxing and pins at boot.
* hogs to configure muxing and pins at boot, and also as a state
* to go into when returning from sleep and idle in
* .pm_runtime_resume() or ordinary .resume() for example.
* @PINCTRL_STATE_IDLE: the state the pinctrl handle shall be put into
* when the pins are idle. Could typically be set from a
* pm_runtime_suspend() operation.
* when the pins are idle. This is a state where the system is relaxed
* but not fully sleeping - some power may be on but clocks gated for
* example. Could typically be set from a pm_runtime_suspend() or
* pm_runtime_idle() operation.
* @PINCTRL_STATE_SLEEP: the state the pinctrl handle shall be put into
* when the pins are sleeping. Could typically be set from a
* common suspend() function.
* when the pins are sleeping. This is a state where the system is in
* its lowest sleep state. Could typically be set from an
* ordinary .suspend() function.
*/
#define PINCTRL_STATE_DEFAULT "default"
#define PINCTRL_STATE_IDLE "idle"