From: Ville Syrjälä Date: Wed, 9 Apr 2014 10:28:48 +0000 (+0300) Subject: drm/i915/chv: Clarify VLV/CHV PIPESTAT bits a bit more X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=724a6905eabf513aa2544c32625d0a5cbea38845;p=linux-beck.git drm/i915/chv: Clarify VLV/CHV PIPESTAT bits a bit more Signed-off-by: Ville Syrjälä Reviewed-by: Antti Koskipää Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 3c720d083ab0..443062faff5e 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -618,11 +618,17 @@ static u32 vlv_get_pipestat_enable_mask(struct drm_device *dev, u32 status_mask) u32 enable_mask = status_mask << 16; /* - * On pipe A we don't support the PSR interrupt yet, on pipe B the - * same bit MBZ. + * On pipe A we don't support the PSR interrupt yet, + * on pipe B and C the same bit MBZ. */ if (WARN_ON_ONCE(status_mask & PIPE_A_PSR_STATUS_VLV)) return 0; + /* + * On pipe B and C we don't support the PSR interrupt yet, on pipe + * A the same bit is for perf counters which we don't use either. + */ + if (WARN_ON_ONCE(status_mask & PIPE_B_PSR_STATUS_VLV)) + return 0; enable_mask &= ~(PIPE_FIFO_UNDERRUN_STATUS | SPRITE0_FLIP_DONE_INT_EN_VLV |