From: "Kulkarni, Vandita" <vandita.kulkarni@intel.com>
To: "Lee, Shawn C" <shawn.c.lee@intel.com>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>
Cc: "Nikula, Jani" <jani.nikula@intel.com>,
"ville.syrjala@linux.intel.com" <ville.syrjala@linux.intel.com>,
"Chiou, Cooper" <cooper.chiou@intel.com>,
"Tseng, William" <william.tseng@intel.com>,
Jani Nikula <jani.nikula@linux.intel.com>
Subject: Re: [Intel-gfx] [v4 5/7] drm/i915: Get proper min cdclk if vDSC enabled
Date: Mon, 23 Aug 2021 12:19:05 +0000 [thread overview]
Message-ID: <d65fdeb666604497a2801668a05a83ff@intel.com> (raw)
In-Reply-To: <20210812154237.13911-6-shawn.c.lee@intel.com>
Have already reviewed v1, v2 and Rb'ed V3 (rev3).
> -----Original Message-----
> From: Lee, Shawn C <shawn.c.lee@intel.com>
> Sent: Thursday, August 12, 2021 9:13 PM
> To: intel-gfx@lists.freedesktop.org
> Cc: Nikula, Jani <jani.nikula@intel.com>; ville.syrjala@linux.intel.com;
> Kulkarni, Vandita <vandita.kulkarni@intel.com>; Chiou, Cooper
> <cooper.chiou@intel.com>; Tseng, William <william.tseng@intel.com>; Lee,
> Shawn C <shawn.c.lee@intel.com>; Jani Nikula <jani.nikula@linux.intel.com>
> Subject: [v4 5/7] drm/i915: Get proper min cdclk if vDSC enabled
>
> VDSC engine can process only 1 pixel per Cd clock. In case VDSC is used and
> max slice count == 1, max supported pixel clock should be 100% of CD clock.
> Then do min_cdclk and pixel clock comparison to get proper min cdclk.
>
> v2:
> - Check for dsc enable and slice count ==1 then allow to
> double confirm min cdclk value.
>
> Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
> Cc: Jani Nikula <jani.nikula@linux.intel.com>
> Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
> Cc: Cooper Chiou <cooper.chiou@intel.com>
> Cc: William Tseng <william.tseng@intel.com>
> Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com>
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_cdclk.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c
> b/drivers/gpu/drm/i915/display/intel_cdclk.c
> index 34fa4130d5c4..9aec17b33819 100644
> --- a/drivers/gpu/drm/i915/display/intel_cdclk.c
> +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
> @@ -2139,6 +2139,16 @@ int intel_crtc_compute_min_cdclk(const struct
> intel_crtc_state *crtc_state)
> /* Account for additional needs from the planes */
> min_cdclk = max(intel_planes_min_cdclk(crtc_state), min_cdclk);
>
> + /*
> + * VDSC engine can process only 1 pixel per Cd clock.
> + * In case VDSC is used and max slice count == 1,
> + * max supported pixel clock should be 100% of CD clock.
> + * Then do min_cdclk and pixel clock comparison to get cdclk.
> + */
> + if (crtc_state->dsc.compression_enable &&
> + crtc_state->dsc.slice_count == 1)
> + min_cdclk = max(min_cdclk, (int)crtc_state->pixel_rate);
> +
> /*
> * HACK. Currently for TGL platforms we calculate
> * min_cdclk initially based on pixel_rate divided
> --
> 2.17.1
next prev parent reply other threads:[~2021-08-23 12:19 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-12 15:42 [Intel-gfx] [v4 0/7] MIPI DSI driver enhancements Lee Shawn C
2021-08-12 15:42 ` [Intel-gfx] [v4 1/7] drm/i915/dsi: send correct gpio_number on gen11 platform Lee Shawn C
2021-08-12 15:42 ` [Intel-gfx] [v4 2/7] drm/i915/jsl: program DSI panel GPIOs Lee Shawn C
2021-08-23 12:06 ` Jani Nikula
2021-08-12 15:42 ` [Intel-gfx] [v4 3/7] drm/i915/dsi: wait for header and payload credit available Lee Shawn C
2021-08-26 5:54 ` Kulkarni, Vandita
2021-08-12 15:42 ` [Intel-gfx] [v4 4/7] drm/i915/dsi: refine send MIPI DCS command sequence Lee Shawn C
2021-08-23 9:45 ` Kulkarni, Vandita
2021-08-12 15:42 ` [Intel-gfx] [v4 5/7] drm/i915: Get proper min cdclk if vDSC enabled Lee Shawn C
2021-08-23 12:19 ` Kulkarni, Vandita [this message]
2021-08-12 15:42 ` [Intel-gfx] [v4 6/7] drm/i915/dsi: Retrieve max brightness level from VBT Lee Shawn C
2021-08-23 8:46 ` Kulkarni, Vandita
2021-08-23 9:03 ` Lee, Shawn C
2021-08-23 12:10 ` Kulkarni, Vandita
2021-08-24 14:00 ` [Intel-gfx] [PATCH] " Lee Shawn C
2021-08-24 14:33 ` Jani Nikula
2021-08-24 15:53 ` Lee, Shawn C
2021-08-12 15:42 ` [Intel-gfx] [v4 7/7] drm/i915/dsi: Send proper brightness value via MIPI DCS command Lee Shawn C
2021-08-12 23:22 ` kernel test robot
2021-08-13 2:46 ` [Intel-gfx] [v4] " Lee Shawn C
2021-08-18 11:10 ` Jani Nikula
2021-08-18 14:58 ` Lee, Shawn C
2021-08-19 11:16 ` [Intel-gfx] [v4] drm/i915/dsi: Read/write " Lee Shawn C
2021-08-12 20:56 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for MIPI DSI driver enhancements (rev5) Patchwork
2021-08-12 20:57 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-08-12 21:26 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-08-13 2:29 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2021-08-13 2:56 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for MIPI DSI driver enhancements (rev6) Patchwork
2021-08-13 2:58 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-08-13 3:24 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-08-13 7:56 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2021-08-19 11:45 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for MIPI DSI driver enhancements (rev7) Patchwork
2021-08-19 11:46 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-08-19 12:09 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-08-19 13:41 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2021-08-24 19:11 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for MIPI DSI driver enhancements (rev8) Patchwork
2021-08-24 19:12 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-08-24 19:41 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-08-25 1:22 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
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