[PATCH] drm/i915/display/debugfs: New entry "DRRS capable" to i915_drrs_status

[Golani, Mitulkumar Ajitkumar]

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of
> Bhanuprakash Modem
> Sent: Wednesday, February 21, 2024 4:42 PM
> To: intel-gfx at lists.freedesktop.org
> Cc: Modem, Bhanuprakash <bhanuprakash.modem at intel.com>
> Subject: [PATCH] drm/i915/display/debugfs: New entry "DRRS capable" to
> i915_drrs_status
> 
> If the connected panel supports both DRRS & PSR, driver gives preference to
> PSR ("DRRS enabled: no"). Even though the hardware supports DRRS, IGT
> treats ("DRRS enabled: yes") as not capable.
> 
> Introduce a new entry "DRRS capable" to debugfs i915_drrs_status, so that
> IGT will read the DRRS capability as "DRRS capable: yes".
> 
> Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_drrs.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c
> b/drivers/gpu/drm/i915/display/intel_drrs.c
> index 6282ec0fc9b4..169ef38ff188 100644
> --- a/drivers/gpu/drm/i915/display/intel_drrs.c
> +++ b/drivers/gpu/drm/i915/display/intel_drrs.c
> @@ -299,6 +299,7 @@ void intel_drrs_crtc_init(struct intel_crtc *crtc)  static
> int intel_drrs_debugfs_status_show(struct seq_file *m, void *unused)  {
>  	struct intel_crtc *crtc = m->private;
> +	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
>  	const struct intel_crtc_state *crtc_state;
>  	int ret;
> 
> @@ -310,6 +311,11 @@ static int intel_drrs_debugfs_status_show(struct
> seq_file *m, void *unused)
> 
>  	mutex_lock(&crtc->drrs.mutex);
> 
> +	seq_printf(m, "DRRS capable: %s\n",
> +		   str_yes_no(crtc_state->has_drrs ||
> +			      HAS_DOUBLE_BUFFERED_M_N(i915) ||
> +			      intel_cpu_transcoder_has_m2_n2(i915,
> +crtc_state->cpu_transcoder)));
> +

Adding DRRS capable property to debugfs.

Change LGTM
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
>  	seq_printf(m, "DRRS enabled: %s\n",
>  		   str_yes_no(crtc_state->has_drrs));
> 
> --
> 2.43.0