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Merge "hwcomposer: Add function pointer for setPowerMode() callback"

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Prashant Malani 2014-06-12 17:19:40 +00:00 committed by Android (Google) Code Review
commit 0f0b6d5ccb
2 changed files with 54 additions and 12 deletions
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59
include/hardware/hwcomposer.h
View file

@ -595,18 +595,53 @@ typedef struct hwc_composer_device_1 {
int (*eventControl)(struct hwc_composer_device_1* dev, int disp,
int event, int enabled);
/*
* blank(..., blank)
* Blanks or unblanks a display's screen.
*
* Turns the screen off when blank is nonzero, on when blank is zero.
* Multiple sequential calls with the same blank value must be supported.
* The screen state transition must be be complete when the function
* returns.
*
* returns 0 on success, negative on error.
*/
int (*blank)(struct hwc_composer_device_1* dev, int disp, int blank);
union {
/*
* For HWC 1.3 and earlier, the blank() interface is used.
*
* blank(..., blank)
* Blanks or unblanks a display's screen.
*
* Turns the screen off when blank is nonzero, on when blank is zero.
* Multiple sequential calls with the same blank value must be
* supported.
* The screen state transition must be be complete when the function
* returns.
*
* returns 0 on success, negative on error.
*/
int (*blank)(struct hwc_composer_device_1* dev, int disp, int blank);
/*
* For HWC 1.4 and above, setPowerMode() will be used in place of
* blank().
*
* setPowerMode(..., mode)
* Sets the display screen's power state.
*
* The expected functionality for the various modes is as follows:
* HWC_POWER_MODE_OFF : Turn the display off.
* HWC_POWER_MODE_DOZE : Turn on the display (if it was previously
* off) and put the display in a low power mode.
* HWC_POWER_MODE_NORMAL : Turn on the display (if it was previously
* off), and take it out of low power mode.
*
* The functionality is similar to the blank() command in previous
* versions of HWC, but with support for more power states.
*
* The display driver is expected to retain and restore the low power
* state of the display while entering and exiting from suspend.
*
* Multiple sequential calls with the same mode value must be supported.
*
* The screen state transition must be be complete when the function
* returns.
*
* returns 0 on success, negative on error.
*/
int (*setPowerMode)(struct hwc_composer_device_1* dev, int disp,
int mode);
};
/*
* Used to retrieve information about the h/w composer

7
include/hardware/hwcomposer_defs.h
View file

@ -199,6 +199,13 @@ enum {
HWC_DISPLAY_VIRTUAL_BIT = 1 << HWC_DISPLAY_VIRTUAL,
};
/* Display power modes */
enum {
HWC_POWER_MODE_OFF = 0,
HWC_POWER_MODE_DOZE = 1,
HWC_POWER_MODE_NORMAL = 2,
};
/*****************************************************************************/
__END_DECLS