On 11/23/2023 11:57 AM, Kandpal, Suraj wrote:

-----Original Message-----
From: Nautiyal, Ankit K <ankit.k.nauti...@intel.com>
Sent: Wednesday, November 22, 2023 12:16 PM
To: intel-gfx@lists.freedesktop.org
Cc: Kandpal, Suraj <suraj.kand...@intel.com>; Manna, Animesh
<animesh.ma...@intel.com>; jani.nik...@linux.intel.com; Nautiyal, Ankit K
<ankit.k.nauti...@intel.com>
Subject: [PATCH] drm/i915/display: Get bigjoiner config before dsc config
during readout

Currently we get bigjoiner config after the dsc get config, during HW readout.
Since dsc_get_config now uses bigjoiner flags/pipes to compute DSC PPS
parameter pic_width, this results in a state mismatch when Bigjoiner and DSC
are used together.

So call get bigjoiner config before calling dsc get config function.

LGTM.

Reviewed-by: Suraj Kandpal <suraj.kand...@intel.com>

Thanks for the review, pushed to drm-intel-next.

Regards,

Ankit


Fixes: 8b70b5691704 ("drm/i915/vdsc: Fill the intel_dsc_get_pps_config
function")
Cc: Suraj Kandpal <suraj.kand...@intel.com>
Cc: Ankit Nautiyal <ankit.k.nauti...@intel.com>
Cc: Animesh Manna <animesh.ma...@intel.com>
Cc: Jani Nikula <jani.nik...@intel.com>

Signed-off-by: Ankit Nautiyal <ankit.k.nauti...@intel.com>
---
  drivers/gpu/drm/i915/display/intel_display.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c
b/drivers/gpu/drm/i915/display/intel_display.c
index 959db3f61e84..e086caf3963d 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3694,8 +3694,8 @@ static bool hsw_get_pipe_config(struct intel_crtc
*crtc,
        if (!active)
                goto out;

-       intel_dsc_get_config(pipe_config);
        intel_bigjoiner_get_config(pipe_config);
+       intel_dsc_get_config(pipe_config);

        if (!transcoder_is_dsi(pipe_config->cpu_transcoder) ||
            DISPLAY_VER(dev_priv) >= 11)
--
2.40.1

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