On Mon, Mar 24, 2014 at 6:21 PM, Ben Widawsky
<benjamin.widawsky@xxxxxxxxxxxxxxx> wrote:
> I am not clear why we've never enabled it by default for GEN7. Looking
> at the git hostiry, it seems Rodrigo disabled it by default, and it's
> never been turned on. Quite a few fixes have gone in over the past year,
> and I think many of us are running this successfully.
Did you try with a high resolution panel? I could never get IVB FBC to
be completely stable with a 2560x1700 panel...
Stéphane
>
> If there is some reason we know of why we don't enable this by default
> on GEN7, then please ignore the patch, and forgive my laziness.
>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Signed-off-by: Ben Widawsky <ben@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index a7da962..a9890df 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -512,7 +512,7 @@ void intel_update_fbc(struct drm_device *dev)
> adjusted_mode = &intel_crtc->config.adjusted_mode;
>
> if (i915.enable_fbc < 0 &&
> - INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) {
> + INTEL_INFO(dev)->gen <= 6) {
> if (set_no_fbc_reason(dev_priv, FBC_CHIP_DEFAULT))
> DRM_DEBUG_KMS("disabled per chip default\n");
> goto out_disable;
> --
> 1.9.1
>
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