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power: Remove outdated comments

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Always redirect to power.h for updated documentation.

Change-Id: I066f3b6f83483bdf3a0db315c1381c670df47b12
This commit is contained in:
Christopher N. Hesse 2017-01-16 22:47:11 +01:00
parent 766aa1e464
commit f629672e63
1 changed files with 6 additions and 64 deletions
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70
power/power.c
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@ -292,11 +292,6 @@ static void init_touch_input_power_path(struct samsung_power_module *samsung_pwr
}
}
/*
* The init function performs power management setup actions at runtime
* startup, such as to set default cpufreq parameters. This is called only by
* the Power HAL instance loaded by PowerManagerService.
*/
static void samsung_power_init(struct power_module *module)
{
struct samsung_power_module *samsung_pwr = (struct samsung_power_module *) module;
@ -305,29 +300,12 @@ static void samsung_power_init(struct power_module *module)
init_touch_input_power_path(samsung_pwr);
}
/*
* The setInteractive function performs power management actions upon the
* system entering interactive state (that is, the system is awake and ready
* for interaction, often with UI devices such as display and touchscreen
* enabled) or non-interactive state (the system appears asleep, display
* usually turned off). The non-interactive state is usually entered after a
* period of inactivity, in order to conserve battery power during such
* inactive periods.
*
* Typical actions are to turn on or off devices and adjust cpufreq parameters.
* This function may also call the appropriate interfaces to allow the kernel
* to suspend the system to low-power sleep state when entering non-interactive
* state, and to disallow low-power suspend when the system is in interactive
* state. When low-power suspend state is allowed, the kernel may suspend the
* system whenever no wakelocks are held.
*
* on is non-zero when the system is transitioning to an interactive / awake
* state, and zero when transitioning to a non-interactive / asleep state.
*
* This function is called to enter non-interactive state after turning off the
* screen (if present), and called to enter interactive state prior to turning
* on the screen.
*/
/**********************************************************
*** API FUNCTIONS
***
*** Refer to power.h for documentation.
**********************************************************/
static void samsung_power_set_interactive(struct power_module *module, int on)
{
struct samsung_power_module *samsung_pwr = (struct samsung_power_module *) module;
@ -379,42 +357,6 @@ out:
ALOGV("power_set_interactive: %d done\n", on);
}
/*
* The powerHint function is called to pass hints on power requirements, which
* may result in adjustment of power/performance parameters of the cpufreq
* governor and other controls.
*
* The possible hints are:
*
* POWER_HINT_VSYNC
*
* Foreground app has started or stopped requesting a VSYNC pulse
* from SurfaceFlinger. If the app has started requesting VSYNC
* then CPU and GPU load is expected soon, and it may be appropriate
* to raise speeds of CPU, memory bus, etc. The data parameter is
* non-zero to indicate VSYNC pulse is now requested, or zero for
* VSYNC pulse no longer requested.
*
* POWER_HINT_INTERACTION
*
* User is interacting with the device, for example, touchscreen
* events are incoming. CPU and GPU load may be expected soon,
* and it may be appropriate to raise speeds of CPU, memory bus,
* etc. The data parameter is unused.
*
* POWER_HINT_LOW_POWER
*
* Low power mode is activated or deactivated. Low power mode
* is intended to save battery at the cost of performance. The data
* parameter is non-zero when low power mode is activated, and zero
* when deactivated.
*
* POWER_HINT_CPU_BOOST
*
* An operation is happening where it would be ideal for the CPU to
* be boosted for a specific duration. The data parameter is an
* integer value of the boost duration in microseconds.
*/
static void samsung_power_hint(struct power_module *module,
power_hint_t hint,
void *data)