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From: Jani Nikula <jani.nikula@linux.intel.com>
To: Ville Syrjala <ville.syrjala@linux.intel.com>,
	intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 0/6] drm/i915: Reject bogus modes with fixed mode panels
Date: Fri, 24 Sep 2021 13:48:51 +0300	[thread overview]
Message-ID: <87wnn69rl8.fsf@intel.com> (raw)
In-Reply-To: <20210923200109.4459-1-ville.syrjala@linux.intel.com>

On Thu, 23 Sep 2021, Ville Syrjala <ville.syrjala@linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> Let's start to reject user modes whose refresh rate is
> nowhere near the actual fixed mode refresh rate we're
> going to use. ATM we're just flat out lying to the user.

I eyeballed through this quickly, mostly seems reasonable, I'll try to
do detailed review later.

One question though. I think we have bug reports [1][2] about panels
that support very high refresh rates, but report a lower refresh rate
mode as the preferred mode. It's perhaps a safe default from a power
usage standpoint. Does this series make using those modes harder or
impossible?

BR,
Jani.


[1] https://gitlab.freedesktop.org/drm/intel/-/issues/2939
[2] https://gitlab.freedesktop.org/drm/intel/-/issues/3969


>
> We'll also pimp the connector's mode list validation 
> a bit.
>
> Ville Syrjälä (6):
>   drm/i915: Extract intel_panel_mode_valid()
>   drm/i915: Use intel_panel_mode_valid() for DSI/LVDS/DVO
>   drm/i915: Reject modes that don't match fixed_mode vrefresh
>   drm/i915: Introduce intel_panel_compute_config()
>   drm/i915: Reject user modes that don't match fixed mode's refresh rate
>   drm/i915: Drop pointless fixed_mode checks from dsi code
>
>  drivers/gpu/drm/i915/display/icl_dsi.c     |  7 ++--
>  drivers/gpu/drm/i915/display/intel_dp.c    | 13 ++++---
>  drivers/gpu/drm/i915/display/intel_dsi.c   | 16 ++++-----
>  drivers/gpu/drm/i915/display/intel_dvo.c   | 24 ++++++++-----
>  drivers/gpu/drm/i915/display/intel_lvds.c  | 15 ++++----
>  drivers/gpu/drm/i915/display/intel_panel.c | 41 ++++++++++++++++++++--
>  drivers/gpu/drm/i915/display/intel_panel.h |  5 +++
>  drivers/gpu/drm/i915/display/intel_sdvo.c  | 21 ++++++-----
>  drivers/gpu/drm/i915/display/vlv_dsi.c     | 39 +++++++++-----------
>  9 files changed, 116 insertions(+), 65 deletions(-)

-- 
Jani Nikula, Intel Open Source Graphics Center

  parent reply	other threads:[~2021-09-24 10:48 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-23 20:01 [Intel-gfx] [PATCH 0/6] drm/i915: Reject bogus modes with fixed mode panels Ville Syrjala
2021-09-23 20:01 ` [Intel-gfx] [PATCH 1/6] drm/i915: Extract intel_panel_mode_valid() Ville Syrjala
2021-09-23 20:01 ` [Intel-gfx] [PATCH 2/6] drm/i915: Use intel_panel_mode_valid() for DSI/LVDS/DVO Ville Syrjala
2021-09-23 20:01 ` [Intel-gfx] [PATCH 3/6] drm/i915: Reject modes that don't match fixed_mode vrefresh Ville Syrjala
2021-09-23 20:01 ` [Intel-gfx] [PATCH 4/6] drm/i915: Introduce intel_panel_compute_config() Ville Syrjala
2021-09-24 12:41   ` Ville Syrjälä
2021-09-27 18:52   ` [Intel-gfx] [PATCH v2 " Ville Syrjala
2021-09-23 20:01 ` [Intel-gfx] [PATCH 5/6] drm/i915: Reject user modes that don't match fixed mode's refresh rate Ville Syrjala
2021-09-27 18:52   ` [Intel-gfx] [PATCH v2 " Ville Syrjala
2021-09-29 18:45   ` [Intel-gfx] [PATCH v3 " Ville Syrjala
2021-09-23 20:01 ` [Intel-gfx] [PATCH 6/6] drm/i915: Drop pointless fixed_mode checks from dsi code Ville Syrjala
2021-09-23 22:18 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915: Reject bogus modes with fixed mode panels Patchwork
2021-09-24  3:26 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2021-09-24 10:48 ` Jani Nikula [this message]
2021-09-24 11:24   ` [Intel-gfx] [PATCH 0/6] " Ville Syrjälä
2021-09-27 21:21 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915: Reject bogus modes with fixed mode panels (rev3) Patchwork
2021-09-28  2:11 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2021-09-29  5:47 ` [Intel-gfx] [PATCH 0/6] drm/i915: Reject bogus modes with fixed mode panels Jani Nikula
2021-09-29 19:48 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915: Reject bogus modes with fixed mode panels (rev4) Patchwork
2021-09-29 22:45 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork

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