diff options
-rw-r--r-- | drivers/gpu/drm/i915/intel_crt.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index eb31fdf758e8..4b7735196cd5 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c | |||
@@ -160,19 +160,20 @@ static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector) | |||
160 | struct drm_i915_private *dev_priv = dev->dev_private; | 160 | struct drm_i915_private *dev_priv = dev->dev_private; |
161 | u32 adpa, temp; | 161 | u32 adpa, temp; |
162 | bool ret; | 162 | bool ret; |
163 | bool turn_off_dac = false; | ||
163 | 164 | ||
164 | temp = adpa = I915_READ(PCH_ADPA); | 165 | temp = adpa = I915_READ(PCH_ADPA); |
165 | 166 | ||
166 | if (HAS_PCH_CPT(dev)) { | 167 | if (HAS_PCH_SPLIT(dev)) |
167 | /* Disable DAC before force detect */ | 168 | turn_off_dac = true; |
168 | I915_WRITE(PCH_ADPA, adpa & ~ADPA_DAC_ENABLE); | 169 | |
169 | (void)I915_READ(PCH_ADPA); | 170 | adpa &= ~ADPA_CRT_HOTPLUG_MASK; |
170 | } else { | 171 | if (turn_off_dac) |
171 | adpa &= ~ADPA_CRT_HOTPLUG_MASK; | 172 | adpa &= ~ADPA_DAC_ENABLE; |
172 | /* disable HPD first */ | 173 | |
173 | I915_WRITE(PCH_ADPA, adpa); | 174 | /* disable HPD first */ |
174 | (void)I915_READ(PCH_ADPA); | 175 | I915_WRITE(PCH_ADPA, adpa); |
175 | } | 176 | (void)I915_READ(PCH_ADPA); |
176 | 177 | ||
177 | adpa |= (ADPA_CRT_HOTPLUG_PERIOD_128 | | 178 | adpa |= (ADPA_CRT_HOTPLUG_PERIOD_128 | |
178 | ADPA_CRT_HOTPLUG_WARMUP_10MS | | 179 | ADPA_CRT_HOTPLUG_WARMUP_10MS | |
@@ -189,7 +190,7 @@ static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector) | |||
189 | 1000, 1)) | 190 | 1000, 1)) |
190 | DRM_ERROR("timed out waiting for FORCE_TRIGGER"); | 191 | DRM_ERROR("timed out waiting for FORCE_TRIGGER"); |
191 | 192 | ||
192 | if (HAS_PCH_CPT(dev)) { | 193 | if (turn_off_dac) { |
193 | I915_WRITE(PCH_ADPA, temp); | 194 | I915_WRITE(PCH_ADPA, temp); |
194 | (void)I915_READ(PCH_ADPA); | 195 | (void)I915_READ(PCH_ADPA); |
195 | } | 196 | } |