On Fri, Jul 29, 2016 at 05:57:01PM +0300, [email protected] wrote:
> From: Ville Syrjälä <[email protected]>
>
> Bspec says:
> "FW_BLC_SELF
> ...
> Programming Note [DevALV] and [DevCST]: When calculating watermark
> values for 15/16bpp, assume 32bpp for purposes of calculation using
> the high priority bandwidth analysis spreadsheet."
It does indeed.
> Let's do that.
>
> Perhaps this might even help with the problem that resulted in
> commit 2ab1bc9df01d ("drm/i915: Disable self-refresh for untiled fbs on
> i915gm")
>
> Cc: Daniel Vetter <[email protected]>
> Cc: Chris Wilson <[email protected]>
> Signed-off-by: Ville Syrjälä <[email protected]>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 1ac32428d4db..8cfef7683088 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -1604,6 +1604,9 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc)
> unsigned long line_time_us;
> int entries;
>
> + if (IS_I915GM(dev) || IS_I945GM(dev))
> + cpp = 4;
> +
Reviewed-by: Chris Wilson <[email protected]>
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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