On Fri, May 03, 2013 at 05:23:41PM -0300, Paulo Zanoni wrote:
> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
>
> If we're using DP/eDP, adjusted_mode->clock may be just the port link
> clock, but we also can't use mode->clock because it's wrong when we're
> using the using panel fitter.
>
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 8468b40..3ca020c 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -2021,6 +2021,7 @@ haswell_update_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc)
> struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> enum pipe pipe = intel_crtc->pipe;
> struct drm_display_mode *mode = &intel_crtc->config.adjusted_mode;
> + int target_clock;
> u32 temp;
>
> if (!intel_crtc_active(crtc)) {
> @@ -2028,6 +2029,11 @@ haswell_update_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc)
> return;
> }
>
> + if (intel_crtc->config.pixel_target_clock)
> + target_clock = intel_crtc->config.pixel_target_clock;
> + else
> + target_clock = intel_crtc->config.adjusted_mode.clock;
I'll ignore this one here, since I already have the real fix at
http://cgit.freedesktop.org/~danvet/drm/commit/?h=fdi-dither&id=0600051ee5eb6d13d385c8629c0ab0f7809346be
I'll submit the series this patch is a part of asap to intel-gfx.
Cheers, Daniel
> +
> temp = I915_READ(PIPE_WM_LINETIME(pipe));
> temp &= ~PIPE_WM_LINETIME_MASK;
>
> @@ -2035,7 +2041,7 @@ haswell_update_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc)
> * row at the given clock rate, multiplied by 8.
> * */
> temp |= PIPE_WM_LINETIME_TIME(
> - DIV_ROUND_CLOSEST(mode->htotal * 1000 * 8, mode->clock));
> + DIV_ROUND_CLOSEST(mode->htotal * 1000 * 8, target_clock));
>
> /* IPS watermarks are only used by pipe A, and are ignored by
> * pipes B and C. They are calculated similarly to the common
> --
> 1.7.10.4
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
