RE: [PATCHv3 08/10] drm/i915/histogram: histogram delay counter doesnt reset

2024-12-03 Thread Kandpal, Suraj
> -Original Message- > From: dri-devel On Behalf Of > Arun R Murthy > Sent: Tuesday, December 3, 2024 11:25 AM > To: intel...@lists.freedesktop.org; intel-...@lists.freedesktop.org; dri- > de...@lists.freedesktop.org > Cc: Murthy, Arun R > Subject: [PATCHv3 0

[PATCHv3 08/10] drm/i915/histogram: histogram delay counter doesnt reset

2024-12-02 Thread Arun R Murthy
The delay counter for histogram does not reset and as a result the histogram bin never gets updated. Workaround would be to use save and restore histogram register. v2: Follow the seq in interrupt handler Restore DPST bit 0 read/write dpst ctl rg Restore DPST bit 1 and Guar