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Mark outputs as DPMSModeOn and restore backlight at mode set 

The kernel always turns monitors on when doing mode setting, and so no
further DPMS action is required. Note this in the mode setting code by
marking the updated DPMS mode and restoring any saved backlight level.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Keith Packard 2010-11-17 16:37:53 +08:00
parent cc930a3761
commit 33c08882c0
1 changed files with 20 additions and 1 deletions
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21
src/intel_display.c
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@ -101,6 +101,9 @@ struct intel_output {
static void
intel_output_dpms(xf86OutputPtr output, int mode);
static void
intel_output_dpms_backlight(xf86OutputPtr output, int oldmode, int mode);
#define BACKLIGHT_CLASS "/sys/class/backlight"
/*
@ -377,9 +380,25 @@ intel_crtc_apply(xf86CrtcPtr crtc)
xf86DrvMsg(crtc->scrn->scrnIndex, X_ERROR,
"failed to set mode: %s\n", strerror(-ret));
ret = FALSE;
} else
} else {
ret = TRUE;
/* Force DPMS to On for all outputs, which the kernel will have done
* with the mode set. Also, restore the backlight level
*/
for (i = 0; i < xf86_config->num_output; i++) {
xf86OutputPtr output = xf86_config->output[i];
struct intel_output *intel_output;
if (output->crtc != crtc)
continue;
intel_output = output->driver_private;
intel_output_dpms_backlight(output, intel_output->dpms_mode, DPMSModeOn);
intel_output->dpms_mode = DPMSModeOn;
}
}
intel_set_gem_max_sizes(scrn);
if (scrn->pScreen)