提交 f85da868 编写于 作者: P Paulo Zanoni 提交者: Daniel Vetter

drm/i915: update FBC maximum fb sizes

CTG/ILK/SNB/IVB support 4kx2k surfaces. HSW supports 4kx4k, but
without proper front buffer invalidation on the last 2k lines, so
don't enable FBC on these cases for now.

v2: Use gen >= 5, not gen > 4 (Daniel).
Signed-off-by: NPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
上级 6c49f241
......@@ -431,7 +431,7 @@ void intel_disable_fbc(struct drm_device *dev)
* - no pixel mulitply/line duplication
* - no alpha buffer discard
* - no dual wide
* - framebuffer <= 2048 in width, 1536 in height
* - framebuffer <= max_hdisplay in width, max_vdisplay in height
*
* We can't assume that any compression will take place (worst case),
* so the compressed buffer has to be the same size as the uncompressed
......@@ -449,6 +449,7 @@ void intel_update_fbc(struct drm_device *dev)
struct intel_framebuffer *intel_fb;
struct drm_i915_gem_object *obj;
int enable_fbc;
unsigned int max_hdisplay, max_vdisplay;
if (!i915_powersave)
return;
......@@ -507,8 +508,16 @@ void intel_update_fbc(struct drm_device *dev)
dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
goto out_disable;
}
if ((crtc->mode.hdisplay > 2048) ||
(crtc->mode.vdisplay > 1536)) {
if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) {
max_hdisplay = 4096;
max_vdisplay = 2048;
} else {
max_hdisplay = 2048;
max_vdisplay = 1536;
}
if ((crtc->mode.hdisplay > max_hdisplay) ||
(crtc->mode.vdisplay > max_vdisplay)) {
DRM_DEBUG_KMS("mode too large for compression, disabling\n");
dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
goto out_disable;
......
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