From b52eb4dcab23fe0c52a437276258e0afcf913ef5 Mon Sep 17 00:00:00 2001 From: Zhao Yakui Date: Sat, 12 Jun 2010 14:32:27 +0800 Subject: drm/i915: Add frame buffer compression support on Ironlake mobile About 0.2W power can be saved on one HP laptop. Signed-off-by: Zhao Yakui Signed-off-by: Zhenyu Wang Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_suspend.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/i915/i915_suspend.c') diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 60a5800fba6..6e2025274db 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -602,7 +602,9 @@ void i915_save_display(struct drm_device *dev) /* Only save FBC state on the platform that supports FBC */ if (I915_HAS_FBC(dev)) { - if (IS_GM45(dev)) { + if (IS_IRONLAKE_M(dev)) { + dev_priv->saveDPFC_CB_BASE = I915_READ(ILK_DPFC_CB_BASE); + } else if (IS_GM45(dev)) { dev_priv->saveDPFC_CB_BASE = I915_READ(DPFC_CB_BASE); } else { dev_priv->saveFBC_CFB_BASE = I915_READ(FBC_CFB_BASE); @@ -706,7 +708,10 @@ void i915_restore_display(struct drm_device *dev) /* only restore FBC info on the platform that supports FBC*/ if (I915_HAS_FBC(dev)) { - if (IS_GM45(dev)) { + if (IS_IRONLAKE_M(dev)) { + ironlake_disable_fbc(dev); + I915_WRITE(ILK_DPFC_CB_BASE, dev_priv->saveDPFC_CB_BASE); + } else if (IS_GM45(dev)) { g4x_disable_fbc(dev); I915_WRITE(DPFC_CB_BASE, dev_priv->saveDPFC_CB_BASE); } else { -- cgit v1.2.3