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msm: mdss: unblank panel when entering doze mode for video mode panels

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For video mode panels, MDSS hardware needs to be on as long as the
panel is on. When doze mode is requested for a video mode panel,
no special optimizations can be done in the display driver to
configure the hardware in a low power state. As such, when doze mode is
requested for video mode panels, simply unblank the panel if it is not
already on.

Change-Id: I0f279d78b9b5c8eebb2bf654df628acafa408f23
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
This commit is contained in:
Aravind Venkateswaran 2014-10-17 12:02:05 -07:00 • committed by David Keitel
parent 73f7e3a8bd
commit ef6fec42a8
1 changed files with 16 additions and 0 deletions
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16
drivers/video/fbdev/msm/mdss_fb.c
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@ -1202,6 +1202,22 @@ static int mdss_fb_blank_sub(int blank_mode, struct fb_info *info,
blank_mode);
cur_power_state = mfd->panel_power_state;
/*
* If doze mode is requested for video mode panels, treat
* the request as full unblank as there are no low power mode
* settings for video mode panels.
*/
if ((FB_BLANK_VSYNC_SUSPEND == blank_mode) &&
(mfd->panel_info->type != MIPI_CMD_PANEL)) {
pr_debug("Doze mode only valid for cmd mode panels\n");
if (mdss_panel_is_power_on(cur_power_state))
return 0;
else
blank_mode = FB_BLANK_UNBLANK;
}
switch (blank_mode) {
case FB_BLANK_UNBLANK:
pr_debug("unblank called. cur pwr state=%d\n", cur_power_state);