diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 0d45487040d..429b66bcb5b 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1214,9 +1214,15 @@ void assert_pipe(struct drm_i915_private *dev_priv, if (pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) state = true; - reg = PIPECONF(cpu_transcoder); - val = I915_READ(reg); - cur_state = !!(val & PIPECONF_ENABLE); + if (IS_HASWELL(dev_priv->dev) && cpu_transcoder != TRANSCODER_EDP && + !(I915_READ(HSW_PWR_WELL_DRIVER) & HSW_PWR_WELL_ENABLE)) { + cur_state = false; + } else { + reg = PIPECONF(cpu_transcoder); + val = I915_READ(reg); + cur_state = !!(val & PIPECONF_ENABLE); + } + WARN(cur_state != state, "pipe %c assertion failure (expected %s, current %s)\n", pipe_name(pipe), state_string(state), state_string(cur_state)); |