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/openbmc/linux/drivers/gpu/drm/i915/display/
H A Dintel_crtc.cdiff ccb0934aeb3f7be579717041b10d274feef21de3 Fri Sep 01 08:04:33 CDT 2023 Ville Syrjälä <ville.syrjala@linux.intel.com> drm/i915: Adjust seamless_m_n flag behaviour

[ Upstream commit 825edc8bc72f3266534a04e9a4447b12332fac82 ]

Make the seamless_m_n flag more like the update_pipe fastset
flag, ie. the flag will only be set if we need to do the seamless
M/N update, and in all other cases the flag is cleared. Also
rename the flag to update_m_n to make it more clear it's similar
to update_pipe.

I believe special casing seamless_m_n like this makes sense
as it also affects eg. vblank evasion. We can potentially avoid
some vblank evasion tricks, simplify some checks, and hopefully
will help with the VRR vs. M/N mess.

Cc: Manasi Navare <navaremanasi@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901130440.2085-6-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <navaremanasi@chromium.org>
Stable-dep-of: 4a36e46df7aa ("drm/i915: Disable live M/N updates when using bigjoiner")
Signed-off-by: Sasha Levin <sashal@kernel.org>
H A Dintel_atomic.cdiff ccb0934aeb3f7be579717041b10d274feef21de3 Fri Sep 01 08:04:33 CDT 2023 Ville Syrjälä <ville.syrjala@linux.intel.com> drm/i915: Adjust seamless_m_n flag behaviour

[ Upstream commit 825edc8bc72f3266534a04e9a4447b12332fac82 ]

Make the seamless_m_n flag more like the update_pipe fastset
flag, ie. the flag will only be set if we need to do the seamless
M/N update, and in all other cases the flag is cleared. Also
rename the flag to update_m_n to make it more clear it's similar
to update_pipe.

I believe special casing seamless_m_n like this makes sense
as it also affects eg. vblank evasion. We can potentially avoid
some vblank evasion tricks, simplify some checks, and hopefully
will help with the VRR vs. M/N mess.

Cc: Manasi Navare <navaremanasi@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901130440.2085-6-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <navaremanasi@chromium.org>
Stable-dep-of: 4a36e46df7aa ("drm/i915: Disable live M/N updates when using bigjoiner")
Signed-off-by: Sasha Levin <sashal@kernel.org>
H A Dintel_display_types.hdiff ccb0934aeb3f7be579717041b10d274feef21de3 Fri Sep 01 08:04:33 CDT 2023 Ville Syrjälä <ville.syrjala@linux.intel.com> drm/i915: Adjust seamless_m_n flag behaviour

[ Upstream commit 825edc8bc72f3266534a04e9a4447b12332fac82 ]

Make the seamless_m_n flag more like the update_pipe fastset
flag, ie. the flag will only be set if we need to do the seamless
M/N update, and in all other cases the flag is cleared. Also
rename the flag to update_m_n to make it more clear it's similar
to update_pipe.

I believe special casing seamless_m_n like this makes sense
as it also affects eg. vblank evasion. We can potentially avoid
some vblank evasion tricks, simplify some checks, and hopefully
will help with the VRR vs. M/N mess.

Cc: Manasi Navare <navaremanasi@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901130440.2085-6-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <navaremanasi@chromium.org>
Stable-dep-of: 4a36e46df7aa ("drm/i915: Disable live M/N updates when using bigjoiner")
Signed-off-by: Sasha Levin <sashal@kernel.org>
H A Dintel_dp.cdiff ccb0934aeb3f7be579717041b10d274feef21de3 Fri Sep 01 08:04:33 CDT 2023 Ville Syrjälä <ville.syrjala@linux.intel.com> drm/i915: Adjust seamless_m_n flag behaviour

[ Upstream commit 825edc8bc72f3266534a04e9a4447b12332fac82 ]

Make the seamless_m_n flag more like the update_pipe fastset
flag, ie. the flag will only be set if we need to do the seamless
M/N update, and in all other cases the flag is cleared. Also
rename the flag to update_m_n to make it more clear it's similar
to update_pipe.

I believe special casing seamless_m_n like this makes sense
as it also affects eg. vblank evasion. We can potentially avoid
some vblank evasion tricks, simplify some checks, and hopefully
will help with the VRR vs. M/N mess.

Cc: Manasi Navare <navaremanasi@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901130440.2085-6-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <navaremanasi@chromium.org>
Stable-dep-of: 4a36e46df7aa ("drm/i915: Disable live M/N updates when using bigjoiner")
Signed-off-by: Sasha Levin <sashal@kernel.org>
H A Dintel_display.cdiff ccb0934aeb3f7be579717041b10d274feef21de3 Fri Sep 01 08:04:33 CDT 2023 Ville Syrjälä <ville.syrjala@linux.intel.com> drm/i915: Adjust seamless_m_n flag behaviour

[ Upstream commit 825edc8bc72f3266534a04e9a4447b12332fac82 ]

Make the seamless_m_n flag more like the update_pipe fastset
flag, ie. the flag will only be set if we need to do the seamless
M/N update, and in all other cases the flag is cleared. Also
rename the flag to update_m_n to make it more clear it's similar
to update_pipe.

I believe special casing seamless_m_n like this makes sense
as it also affects eg. vblank evasion. We can potentially avoid
some vblank evasion tricks, simplify some checks, and hopefully
will help with the VRR vs. M/N mess.

Cc: Manasi Navare <navaremanasi@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901130440.2085-6-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <navaremanasi@chromium.org>
Stable-dep-of: 4a36e46df7aa ("drm/i915: Disable live M/N updates when using bigjoiner")
Signed-off-by: Sasha Levin <sashal@kernel.org>