diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_device_info.c | 8 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 943db8ec63f8..c459166d4deb 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -116,6 +116,9 @@ * #define GEN8_BAR _MMIO(0xb888) */ +#define GU_CNTL_PROTECTED _MMIO(0x10100C) +#define DEPRESENT REG_BIT(9) + #define GU_CNTL _MMIO(0x101010) #define LMEM_INIT REG_BIT(7) #define DRIVERFLR REG_BIT(31) diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c index 524f93768c41..94fca01c088b 100644 --- a/drivers/gpu/drm/i915/intel_device_info.c +++ b/drivers/gpu/drm/i915/intel_device_info.c @@ -441,6 +441,14 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv) runtime->num_sprites[pipe] = 1; } + if (HAS_DISPLAY(dev_priv) && + (IS_DGFX(dev_priv) || DISPLAY_VER(dev_priv) >= 14) && + !(intel_de_read(dev_priv, GU_CNTL_PROTECTED) & DEPRESENT)) { + drm_info(&dev_priv->drm, "Display not present, disabling\n"); + + runtime->pipe_mask = 0; + } + if (HAS_DISPLAY(dev_priv) && IS_GRAPHICS_VER(dev_priv, 7, 8) && HAS_PCH_SPLIT(dev_priv)) { u32 fuse_strap = intel_de_read(dev_priv, FUSE_STRAP); |