From 7c6c2652bab9601883ed579071aa56ab52a28ea6 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 18 Nov 2013 18:32:37 -0800 Subject: drm/i915: Do not enable package C8 on unsupported hardware If the hardware does not support package C8, then do not even schedule work to enable it. Thereby we can eliminate a bunch of dangerous work. Signed-off-by: Chris Wilson Cc: Paulo Zanoni Reviewed-by: Paulo Zanoni Signed-off-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/gpu/drm/i915/intel_display.c') diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 0b77916e7ea..7ec8b488bb1 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6518,6 +6518,9 @@ static void __hsw_disable_package_c8(struct drm_i915_private *dev_priv) void hsw_enable_package_c8(struct drm_i915_private *dev_priv) { + if (!HAS_PC8(dev_priv->dev)) + return; + mutex_lock(&dev_priv->pc8.lock); __hsw_enable_package_c8(dev_priv); mutex_unlock(&dev_priv->pc8.lock); @@ -6525,6 +6528,9 @@ void hsw_enable_package_c8(struct drm_i915_private *dev_priv) void hsw_disable_package_c8(struct drm_i915_private *dev_priv) { + if (!HAS_PC8(dev_priv->dev)) + return; + mutex_lock(&dev_priv->pc8.lock); __hsw_disable_package_c8(dev_priv); mutex_unlock(&dev_priv->pc8.lock); @@ -6562,6 +6568,9 @@ static void hsw_update_package_c8(struct drm_device *dev) struct drm_i915_private *dev_priv = dev->dev_private; bool allow; + if (!HAS_PC8(dev_priv->dev)) + return; + if (!i915_enable_pc8) return; @@ -6585,6 +6594,9 @@ done: static void hsw_package_c8_gpu_idle(struct drm_i915_private *dev_priv) { + if (!HAS_PC8(dev_priv->dev)) + return; + mutex_lock(&dev_priv->pc8.lock); if (!dev_priv->pc8.gpu_idle) { dev_priv->pc8.gpu_idle = true; @@ -6595,6 +6607,9 @@ static void hsw_package_c8_gpu_idle(struct drm_i915_private *dev_priv) static void hsw_package_c8_gpu_busy(struct drm_i915_private *dev_priv) { + if (!HAS_PC8(dev_priv->dev)) + return; + mutex_lock(&dev_priv->pc8.lock); if (dev_priv->pc8.gpu_idle) { dev_priv->pc8.gpu_idle = false; -- cgit v1.2.3-70-g09d2