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i915: add blanking support to intelfb 

Got tired of not having my LCD actually turn off when I left the machine at the
console.
main
Jesse Barnes 2008-06-18 16:49:51 -07:00 committed by Jesse Barnes
parent 57b8837b4e
commit f58e21c7d0
1 changed files with 87 additions and 0 deletions
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87
linux-core/intel_fb.c
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@ -525,6 +525,92 @@ static int intelfb_pan_display(struct fb_var_screeninfo *var,
return ret;
}
static void intelfb_on(struct fb_info *info)
{
struct intelfb_par *par = info->par;
struct drm_device *dev = par->dev;
struct drm_crtc *crtc;
struct drm_encoder *encoder;
int i;
/*
* For each CRTC in this fb, find all associated encoders
* and turn them off, then turn off the CRTC.
*/
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
for (i = 0; i < par->crtc_count; i++)
if (crtc->base.id == par->crtc_ids[i])
break;
crtc_funcs->dpms(crtc, DPMSModeOn);
/* Found a CRTC on this fb, now find encoders */
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
if (encoder->crtc == crtc) {
struct drm_encoder_helper_funcs *encoder_funcs;
encoder_funcs = encoder->helper_private;
encoder_funcs->dpms(encoder, DPMSModeOn);
}
}
}
}
static void intelfb_off(struct fb_info *info, int dpms_mode)
{
struct intelfb_par *par = info->par;
struct drm_device *dev = par->dev;
struct drm_crtc *crtc;
struct drm_encoder *encoder;
int i;
/*
* For each CRTC in this fb, find all associated encoders
* and turn them off, then turn off the CRTC.
*/
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
for (i = 0; i < par->crtc_count; i++)
if (crtc->base.id == par->crtc_ids[i])
break;
/* Found a CRTC on this fb, now find encoders */
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
if (encoder->crtc == crtc) {
struct drm_encoder_helper_funcs *encoder_funcs;
encoder_funcs = encoder->helper_private;
encoder_funcs->dpms(encoder, dpms_mode);
}
}
if (dpms_mode == DPMSModeOff)
crtc_funcs->dpms(crtc, dpms_mode);
}
}
int intelfb_blank(int blank, struct fb_info *info)
{
switch (blank) {
case FB_BLANK_UNBLANK:
intelfb_on(info);
break;
case FB_BLANK_NORMAL:
intelfb_off(info, DPMSModeStandby);
break;
case FB_BLANK_HSYNC_SUSPEND:
intelfb_off(info, DPMSModeStandby);
break;
case FB_BLANK_VSYNC_SUSPEND:
intelfb_off(info, DPMSModeSuspend);
break;
case FB_BLANK_POWERDOWN:
intelfb_off(info, DPMSModeOff);
break;
}
return 0;
}
static struct fb_ops intelfb_ops = {
.owner = THIS_MODULE,
//.fb_open = intelfb_open,
@ -539,6 +625,7 @@ static struct fb_ops intelfb_ops = {
.fb_copyarea = cfb_copyarea, //intelfb_copyarea,
.fb_imageblit = cfb_imageblit, //intelfb_imageblit,
.fb_pan_display = intelfb_pan_display,
.fb_blank = intelfb_blank,
};
/**