[Intel-gfx] [PATCH] i915: Expose panel power cycle delay to i915_panel_timings

[Jani Nikula]

On Mon, 18 Nov 2019, Anshuman Gupta <anshuman.gupta at intel.com> wrote:
> Putting down the AUX power domain reference count in
> edp vdd off async sequence takes too much of time
> (relative to panel power cycle delay) therefore it make sense
> to expose the panel power cycle delay to i915_panel_timings
> along with other delays.
> It can be use by DC state IGT to wait for strict power cycle delay
> in order to check for various DC state counters.

Catching up on review, are you suggesting to look at this kind of
debugfs files for tests? Please find another way.

I don't mind having the debugfs info per se.

BR,
Jani.

>
> Cc: Imre Deak <imre.deak at intel.com>
> Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index cab632791f73..c075cc2b7bb5 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -4436,6 +4436,8 @@ static int i915_panel_show(struct seq_file *m, void *data)
>  		   intel_dp->panel_power_up_delay);
>  	seq_printf(m, "Panel power down delay: %d\n",
>  		   intel_dp->panel_power_down_delay);
> +	seq_printf(m, "Panel power cycle delay: %d\n",
> +		   intel_dp->panel_power_cycle_delay);
>  	seq_printf(m, "Backlight on delay: %d\n",
>  		   intel_dp->backlight_on_delay);
>  	seq_printf(m, "Backlight off delay: %d\n",

-- 
Jani Nikula, Intel Open Source Graphics Center