drm/i915: DFSM pipe disable is valid from gen9 onwards (v2)

It's not just GEN9 platforms that allow for pipes to be disabled via
the DFSM register, but all later platforms as well.

v2: drop pointless parentheses (Ville)

Signed-off-by: Bob Paauwe <bob.j.paauwe@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181211192545.140081-1-bob.j.paauwe@intel.com

diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 1e56319334f38ed248a2d12d93ddc3b97937d6c8..bd5c4d62c635bb27b2d61317e2742497a6f90197 100644 (file)
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -811,7 +811,7 @@ void intel_device_info_runtime_init(struct intel_device_info *info)
                        DRM_INFO("PipeC fused off\n");
                        info->num_pipes -= 1;
                }
-       } else if (HAS_DISPLAY(dev_priv) && IS_GEN9(dev_priv)) {
+       } else if (HAS_DISPLAY(dev_priv) && INTEL_GEN(dev_priv) >= 9) {
                u32 dfsm = I915_READ(SKL_DFSM);
                u8 disabled_mask = 0;
                bool invalid;