diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lvds.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 222459ad178d..14e516fdc2dd 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -89,17 +89,22 @@ static u32 intel_lvds_get_max_backlight(struct drm_device *dev) static void intel_lvds_set_power(struct drm_device *dev, bool on) { struct drm_i915_private *dev_priv = dev->dev_private; - u32 pp_status, ctl_reg, status_reg; + u32 pp_status, ctl_reg, status_reg, lvds_reg; if (HAS_PCH_SPLIT(dev)) { ctl_reg = PCH_PP_CONTROL; status_reg = PCH_PP_STATUS; + lvds_reg = PCH_LVDS; } else { ctl_reg = PP_CONTROL; status_reg = PP_STATUS; + lvds_reg = LVDS; } if (on) { + I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN); + POSTING_READ(lvds_reg); + I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON); do { @@ -115,6 +120,9 @@ static void intel_lvds_set_power(struct drm_device *dev, bool on) do { pp_status = I915_READ(status_reg); } while (pp_status & PP_ON); + + I915_WRITE(lvds_reg, I915_READ(lvds_reg) & ~LVDS_PORT_EN); + POSTING_READ(lvds_reg); } } |