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path: root/drivers/gpu/drm/i915/intel_crt.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_crt.c')
-rw-r--r--drivers/gpu/drm/i915/intel_crt.c66
1 files changed, 49 insertions, 17 deletions
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index dcaed3466e8..2b6d44381c3 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -64,11 +64,21 @@ static void intel_crt_dpms(struct drm_encoder *encoder, int mode)
static int intel_crt_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
+ struct drm_device *dev = connector->dev;
+
+ int max_clock = 0;
if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
return MODE_NO_DBLESCAN;
- if (mode->clock > 400000 || mode->clock < 25000)
- return MODE_CLOCK_RANGE;
+ if (mode->clock < 25000)
+ return MODE_CLOCK_LOW;
+
+ if (!IS_I9XX(dev))
+ max_clock = 350000;
+ else
+ max_clock = 400000;
+ if (mode->clock > max_clock)
+ return MODE_CLOCK_HIGH;
return MODE_OK;
}
@@ -113,10 +123,13 @@ static void intel_crt_mode_set(struct drm_encoder *encoder,
if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
adpa |= ADPA_VSYNC_ACTIVE_HIGH;
- if (intel_crtc->pipe == 0)
+ if (intel_crtc->pipe == 0) {
adpa |= ADPA_PIPE_A_SELECT;
- else
+ I915_WRITE(BCLRPAT_A, 0);
+ } else {
adpa |= ADPA_PIPE_B_SELECT;
+ I915_WRITE(BCLRPAT_B, 0);
+ }
I915_WRITE(ADPA, adpa);
}
@@ -133,20 +146,39 @@ static bool intel_crt_detect_hotplug(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 temp;
-
- unsigned long timeout = jiffies + msecs_to_jiffies(1000);
-
- temp = I915_READ(PORT_HOTPLUG_EN);
-
- I915_WRITE(PORT_HOTPLUG_EN,
- temp | CRT_HOTPLUG_FORCE_DETECT | (1 << 5));
+ u32 hotplug_en;
+ int i, tries = 0;
+ /*
+ * On 4 series desktop, CRT detect sequence need to be done twice
+ * to get a reliable result.
+ */
- do {
- if (!(I915_READ(PORT_HOTPLUG_EN) & CRT_HOTPLUG_FORCE_DETECT))
- break;
- msleep(1);
- } while (time_after(timeout, jiffies));
+ if (IS_G4X(dev) && !IS_GM45(dev))
+ tries = 2;
+ else
+ tries = 1;
+ hotplug_en = I915_READ(PORT_HOTPLUG_EN);
+ hotplug_en &= ~(CRT_HOTPLUG_MASK);
+ hotplug_en |= CRT_HOTPLUG_FORCE_DETECT;
+
+ if (IS_GM45(dev))
+ hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
+
+ hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
+
+ for (i = 0; i < tries ; i++) {
+ unsigned long timeout;
+ /* turn on the FORCE_DETECT */
+ I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
+ timeout = jiffies + msecs_to_jiffies(1000);
+ /* wait for FORCE_DETECT to go off */
+ do {
+ if (!(I915_READ(PORT_HOTPLUG_EN) &
+ CRT_HOTPLUG_FORCE_DETECT))
+ break;
+ msleep(1);
+ } while (time_after(timeout, jiffies));
+ }
if ((I915_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) ==
CRT_HOTPLUG_MONITOR_COLOR)