diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-12-14 19:21:29 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-12-23 09:51:37 +0000 |
| commit | 4d3024428f5c3ef5295e6f6fb257ae118b3f93a1 (patch) | |
| tree | 1f5fc37e71e0514d977aa249246e2800154b3795 | |
| parent | 63ee41d794d9c555f84205517a68509848988760 (diff) | |
drm/i915: Verify Ironlake eDP presence on DP_A using the capability fuse
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 19 |
2 files changed, 25 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 8470a972f1b..cb8f4342927 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2591,6 +2591,13 @@ #define ILK_DISPLAY_CHICKEN2 0x42004 #define ILK_DPARB_GATE (1<<22) #define ILK_VSDPFD_FULL (1<<21) +#define ILK_DISPLAY_CHICKEN_FUSES 0x42014 +#define ILK_INTERNAL_GRAPHICS_DISABLE (1<<31) +#define ILK_INTERNAL_DISPLAY_DISABLE (1<<30) +#define ILK_DISPLAY_DEBUG_DISABLE (1<<29) +#define ILK_HDCP_DISABLE (1<<25) +#define ILK_eDP_A_DISABLE (1<<24) +#define ILK_DESKTOP (1<<23) #define ILK_DSPCLK_GATE 0x42020 #define ILK_DPARB_CLK_GATE (1<<5) /* According to spec this bit 7/8/9 of 0x42020 should be set to enable FBC */ diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 97e374ec7f7..fca523288ac 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5379,6 +5379,23 @@ static int intel_encoder_clones(struct drm_device *dev, int type_mask) return index_mask; } +static bool has_edp_a(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + if (!IS_MOBILE(dev)) + return false; + + if ((I915_READ(DP_A) & DP_DETECTED) == 0) + return false; + + if (IS_GEN5(dev) && + (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE)) + return false; + + return true; +} + static void intel_setup_outputs(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -5396,7 +5413,7 @@ static void intel_setup_outputs(struct drm_device *dev) if (HAS_PCH_SPLIT(dev)) { dpd_is_edp = intel_dpd_is_edp(dev); - if (IS_MOBILE(dev) && (I915_READ(DP_A) & DP_DETECTED)) + if (has_edp_a(dev)) intel_dp_init(dev, DP_A); if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED)) |