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authorZhenyu Wang <zhenyuw@linux.intel.com>2009-07-23 13:00:33 -0400
committerEric Anholt <eric@anholt.net>2009-07-29 18:16:25 -0400
commit67941da28d59cca6817d35823fcb1e3e4eed030e (patch)
tree4b4d3e63548bdf17ccd79921f9456f86d7cfc12a /drivers
parent32f9d658aee5be09ebdd28fc730630e61d0b46db (diff)
drm/i915: fix VGA detect on IGDNG
Check FORCE_DETECT bit to be clear for the finish of hotplug detect process. Also check possible mono monitor which should also be marked as connected. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/intel_crt.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index d6a1a6e5539a..4cf8e2e88a40 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -156,6 +156,9 @@ static bool intel_igdng_crt_detect_hotplug(struct drm_connector *connector)
156 156
157 temp = adpa = I915_READ(PCH_ADPA); 157 temp = adpa = I915_READ(PCH_ADPA);
158 158
159 adpa &= ~ADPA_DAC_ENABLE;
160 I915_WRITE(PCH_ADPA, adpa);
161
159 adpa &= ~ADPA_CRT_HOTPLUG_MASK; 162 adpa &= ~ADPA_CRT_HOTPLUG_MASK;
160 163
161 adpa |= (ADPA_CRT_HOTPLUG_PERIOD_128 | 164 adpa |= (ADPA_CRT_HOTPLUG_PERIOD_128 |
@@ -169,13 +172,14 @@ static bool intel_igdng_crt_detect_hotplug(struct drm_connector *connector)
169 DRM_DEBUG("pch crt adpa 0x%x", adpa); 172 DRM_DEBUG("pch crt adpa 0x%x", adpa);
170 I915_WRITE(PCH_ADPA, adpa); 173 I915_WRITE(PCH_ADPA, adpa);
171 174
172 /* This might not be needed as not specified in spec...*/ 175 while ((I915_READ(PCH_ADPA) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) != 0)
173 udelay(1000); 176 ;
174 177
175 /* Check the status to see if both blue and green are on now */ 178 /* Check the status to see if both blue and green are on now */
176 adpa = I915_READ(PCH_ADPA); 179 adpa = I915_READ(PCH_ADPA);
177 if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) == 180 adpa &= ADPA_CRT_HOTPLUG_MONITOR_MASK;
178 ADPA_CRT_HOTPLUG_MONITOR_COLOR) 181 if ((adpa == ADPA_CRT_HOTPLUG_MONITOR_COLOR) ||
182 (adpa == ADPA_CRT_HOTPLUG_MONITOR_MONO))
179 ret = true; 183 ret = true;
180 else 184 else
181 ret = false; 185 ret = false;