drm/kms: properly handle fbdev blanking
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>
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Родитель
d91d8a3f88
Коммит
731b5a15a3
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@ -373,11 +373,9 @@ static void drm_fb_helper_off(struct fb_info *info, int dpms_mode)
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mutex_unlock(&dev->mode_config.mutex);
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}
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}
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if (dpms_mode == DRM_MODE_DPMS_OFF) {
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mutex_lock(&dev->mode_config.mutex);
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crtc_funcs->dpms(crtc, dpms_mode);
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mutex_unlock(&dev->mode_config.mutex);
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}
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mutex_lock(&dev->mode_config.mutex);
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crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
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mutex_unlock(&dev->mode_config.mutex);
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}
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}
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}
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@ -385,18 +383,23 @@ static void drm_fb_helper_off(struct fb_info *info, int dpms_mode)
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int drm_fb_helper_blank(int blank, struct fb_info *info)
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{
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switch (blank) {
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/* Display: On; HSync: On, VSync: On */
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case FB_BLANK_UNBLANK:
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drm_fb_helper_on(info);
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break;
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/* Display: Off; HSync: On, VSync: On */
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case FB_BLANK_NORMAL:
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drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
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drm_fb_helper_off(info, DRM_MODE_DPMS_ON);
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break;
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/* Display: Off; HSync: Off, VSync: On */
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case FB_BLANK_HSYNC_SUSPEND:
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drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
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break;
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/* Display: Off; HSync: On, VSync: Off */
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case FB_BLANK_VSYNC_SUSPEND:
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drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND);
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break;
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/* Display: Off; HSync: Off, VSync: Off */
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case FB_BLANK_POWERDOWN:
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drm_fb_helper_off(info, DRM_MODE_DPMS_OFF);
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break;
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