From 4fc7e845f3e2c4c928bf792e43c69af969999a2c Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Mon, 26 Sep 2016 15:07:52 +0300 Subject: [PATCH] drm/i915/skl: tell the user about pre-production hardware We just removed the implementation for all the pre-production workarounds, so now tell the user that we expect his machine to not work properly. Also convert this to DRM_ERROR so we can more easily spot these problems in bug reports and CI/QA runs. Cc: Jani Nikula Signed-off-by: Paulo Zanoni Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/1474891672-23414-2-git-send-email-jani.nikula@intel.com --- drivers/gpu/drm/i915/i915_drv.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index bfb2efd..9c15432 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -771,6 +771,19 @@ static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv) destroy_workqueue(dev_priv->wq); } +/* + * We don't keep the workarounds for pre-production hardware, so we expect our + * driver to fail on these machines in one way or another. A little warning on + * dmesg may help both the user and the bug triagers. + */ +static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv) +{ + if (IS_HSW_EARLY_SDV(dev_priv) || + IS_SKL_REVID(dev_priv, 0, SKL_REVID_F0)) + DRM_ERROR("This is a pre-production stepping. " + "It may not be fully functional.\n"); +} + /** * i915_driver_init_early - setup state not requiring device access * @dev_priv: device private @@ -838,13 +851,7 @@ static int i915_driver_init_early(struct drm_i915_private *dev_priv, intel_device_info_dump(dev_priv); - /* Not all pre-production machines fall into this category, only the - * very first ones. Almost everything should work, except for maybe - * suspend/resume. And we don't implement workarounds that affect only - * pre-production machines. */ - if (IS_HSW_EARLY_SDV(dev_priv)) - DRM_INFO("This is an early pre-production Haswell machine. " - "It may not be fully functional.\n"); + intel_detect_preproduction_hw(dev_priv); return 0; -- 2.7.4