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drm/kms: properly handle fbdev blanking

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I examined several fbdev drivers and foudn the blanking code in
drm_fb_helper to be wrong. This patch fixes the fbdev blanking to behave
like other fbdev drivers.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
James Simmons 2009-10-29 20:39:07 +00:00 committed by Dave Airlie
parent d91d8a3f88
commit 731b5a15a3
1 changed files with 9 additions and 6 deletions
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15
drivers/gpu/drm/drm_fb_helper.c
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@ -373,11 +373,9 @@ static void drm_fb_helper_off(struct fb_info *info, int dpms_mode)
mutex_unlock(&dev->mode_config.mutex);
}
}
if (dpms_mode == DRM_MODE_DPMS_OFF) {
mutex_lock(&dev->mode_config.mutex);
crtc_funcs->dpms(crtc, dpms_mode);
mutex_unlock(&dev->mode_config.mutex);
}
mutex_lock(&dev->mode_config.mutex);
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
mutex_unlock(&dev->mode_config.mutex);
}
}
}
@ -385,18 +383,23 @@ static void drm_fb_helper_off(struct fb_info *info, int dpms_mode)
int drm_fb_helper_blank(int blank, struct fb_info *info)
{
switch (blank) {
/* Display: On; HSync: On, VSync: On */
case FB_BLANK_UNBLANK:
drm_fb_helper_on(info);
break;
/* Display: Off; HSync: On, VSync: On */
case FB_BLANK_NORMAL:
drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
drm_fb_helper_off(info, DRM_MODE_DPMS_ON);
break;
/* Display: Off; HSync: Off, VSync: On */
case FB_BLANK_HSYNC_SUSPEND:
drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
break;
/* Display: Off; HSync: On, VSync: Off */
case FB_BLANK_VSYNC_SUSPEND:
drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND);
break;
/* Display: Off; HSync: Off, VSync: Off */
case FB_BLANK_POWERDOWN:
drm_fb_helper_off(info, DRM_MODE_DPMS_OFF);
break;