These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / include / linux / pinctrl / pinctrl-state.h

diff --git a/kernel/include/linux/pinctrl/pinctrl-state.h b/kernel/include/linux/pinctrl/pinctrl-state.h
index b5919f8..2307351 100644 (file)
--- a/kernel/include/linux/pinctrl/pinctrl-state.h
+++ b/kernel/include/linux/pinctrl/pinctrl-state.h
@@ -9,6 +9,13 @@
  *     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_INIT: normally the pinctrl will be set to "default"
+ *     before the driver's probe() function is called.  There are some
+ *     drivers where that is not appropriate becausing doing so would
+ *     glitch the pins.  In those cases you can add an "init" pinctrl
+ *     which is the state of the pins before drive probe.  After probe
+ *     if the pins are still in "init" state they'll be moved to
+ *     "default".
  * @PINCTRL_STATE_IDLE: the state the pinctrl handle shall be put into
  *     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
@@ -20,5 +27,6 @@
  *     ordinary .suspend() function.
  */
 #define PINCTRL_STATE_DEFAULT "default"
+#define PINCTRL_STATE_INIT "init"
 #define PINCTRL_STATE_IDLE "idle"
 #define PINCTRL_STATE_SLEEP "sleep"