diff mbox series

[v13,1/3] drm/i915/vrr: Add helper to check if vrr possible

Message ID 20241001134703.1128487-2-mitulkumar.ajitkumar.golani@intel.com (mailing list archive)
State New, archived
Headers show
Series VRR refactoring and panel replay workaround | expand

Commit Message

Mitul Golani Oct. 1, 2024, 1:47 p.m. UTC
Add helper to check if vrr is possible based on flipline
is computed.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_vrr.c | 7 ++++++-
 drivers/gpu/drm/i915/display/intel_vrr.h | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

Comments

Cavitt, Jonathan Oct. 1, 2024, 2:06 p.m. UTC | #1
-----Original Message-----
From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of Mitul Golani
Sent: Tuesday, October 1, 2024 6:47 AM
To: intel-gfx@lists.freedesktop.org
Cc: Nikula, Jani <jani.nikula@intel.com>; Syrjala, Ville <ville.syrjala@intel.com>; Nautiyal, Ankit K <ankit.k.nautiyal@intel.com>; Shankar, Uma <uma.shankar@intel.com>
Subject: [PATCH v13 1/3] drm/i915/vrr: Add helper to check if vrr possible
> 
> Add helper to check if vrr is possible based on flipline
> is computed.
> 
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_vrr.c | 7 ++++++-
>  drivers/gpu/drm/i915/display/intel_vrr.h | 1 +
>  2 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
> index 9a51f5bac307..79db30e31324 100644
> --- a/drivers/gpu/drm/i915/display/intel_vrr.c
> +++ b/drivers/gpu/drm/i915/display/intel_vrr.c
> @@ -56,6 +56,11 @@ bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh)
>  		vrefresh <= info->monitor_range.max_vfreq;
>  }
>  
> +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state)
> +{
> +	return (crtc_state->vrr.flipline) ? true : false;

I think this can be compressed to:

"""
	return !!(crtc_state->vrr.flipline);
"""

But otherwise:
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
-Jonathan Cavitt

> +}
> +
>  void
>  intel_vrr_check_modeset(struct intel_atomic_state *state)
>  {
> @@ -281,7 +286,7 @@ void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
>  		intel_de_rmw(display, CHICKEN_TRANS(cpu_transcoder),
>  			     0, PIPE_VBLANK_WITH_DELAY);
>  
> -	if (!crtc_state->vrr.flipline) {
> +	if (!intel_vrr_possible(crtc_state)) {
>  		intel_de_write(display,
>  			       TRANS_VRR_CTL(display, cpu_transcoder), 0);
>  		return;
> diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
> index 89937858200d..af921dda4619 100644
> --- a/drivers/gpu/drm/i915/display/intel_vrr.h
> +++ b/drivers/gpu/drm/i915/display/intel_vrr.h
> @@ -15,6 +15,7 @@ struct intel_crtc_state;
>  
>  bool intel_vrr_is_capable(struct intel_connector *connector);
>  bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh);
> +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state);
>  void intel_vrr_check_modeset(struct intel_atomic_state *state);
>  void intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
>  			      struct drm_connector_state *conn_state);
> -- 
> 2.46.0
> 
>
Ville Syrjälä Oct. 9, 2024, 7:24 a.m. UTC | #2
On Tue, Oct 01, 2024 at 07:17:01PM +0530, Mitul Golani wrote:
> Add helper to check if vrr is possible based on flipline
> is computed.
> 
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_vrr.c | 7 ++++++-
>  drivers/gpu/drm/i915/display/intel_vrr.h | 1 +
>  2 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
> index 9a51f5bac307..79db30e31324 100644
> --- a/drivers/gpu/drm/i915/display/intel_vrr.c
> +++ b/drivers/gpu/drm/i915/display/intel_vrr.c
> @@ -56,6 +56,11 @@ bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh)
>  		vrefresh <= info->monitor_range.max_vfreq;
>  }
>  
> +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state)
> +{
> +	return (crtc_state->vrr.flipline) ? true : false;

That can be just 'return crtc_state->vrr.flipline;',
of 'return crtc_state->vrr.flipline != 0;' if you prefer.

> +}
> +
>  void
>  intel_vrr_check_modeset(struct intel_atomic_state *state)
>  {
> @@ -281,7 +286,7 @@ void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
>  		intel_de_rmw(display, CHICKEN_TRANS(cpu_transcoder),
>  			     0, PIPE_VBLANK_WITH_DELAY);
>  
> -	if (!crtc_state->vrr.flipline) {
> +	if (!intel_vrr_possible(crtc_state)) {

Hmm. Looks like we have a fairly big mess with the AS SDP 
and CMRR stuff when it comes to programming the hardware
vs. readout. But that's not the fault of this patch obviously.

>  		intel_de_write(display,
>  			       TRANS_VRR_CTL(display, cpu_transcoder), 0);
>  		return;
> diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
> index 89937858200d..af921dda4619 100644
> --- a/drivers/gpu/drm/i915/display/intel_vrr.h
> +++ b/drivers/gpu/drm/i915/display/intel_vrr.h
> @@ -15,6 +15,7 @@ struct intel_crtc_state;
>  
>  bool intel_vrr_is_capable(struct intel_connector *connector);
>  bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh);
> +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state);
>  void intel_vrr_check_modeset(struct intel_atomic_state *state);
>  void intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
>  			      struct drm_connector_state *conn_state);
> -- 
> 2.46.0
Mitul Golani Oct. 9, 2024, 9:13 a.m. UTC | #3
> -----Original Message-----
> From: Cavitt, Jonathan <jonathan.cavitt@intel.com>
> Sent: Tuesday, October 1, 2024 7:37 PM
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>;
> intel-gfx@lists.freedesktop.org
> Cc: Nikula, Jani <jani.nikula@intel.com>; Syrjala, Ville <ville.syrjala@intel.com>;
> Nautiyal, Ankit K <ankit.k.nautiyal@intel.com>; Shankar, Uma
> <uma.shankar@intel.com>; Cavitt, Jonathan <jonathan.cavitt@intel.com>
> Subject: RE: [PATCH v13 1/3] drm/i915/vrr: Add helper to check if vrr possible
> 
> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of Mitul
> Golani
> Sent: Tuesday, October 1, 2024 6:47 AM
> To: intel-gfx@lists.freedesktop.org
> Cc: Nikula, Jani <jani.nikula@intel.com>; Syrjala, Ville <ville.syrjala@intel.com>;
> Nautiyal, Ankit K <ankit.k.nautiyal@intel.com>; Shankar, Uma
> <uma.shankar@intel.com>
> Subject: [PATCH v13 1/3] drm/i915/vrr: Add helper to check if vrr possible
> >
> > Add helper to check if vrr is possible based on flipline is computed.
> >
> > Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_vrr.c | 7 ++++++-
> > drivers/gpu/drm/i915/display/intel_vrr.h | 1 +
> >  2 files changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c
> > b/drivers/gpu/drm/i915/display/intel_vrr.c
> > index 9a51f5bac307..79db30e31324 100644
> > --- a/drivers/gpu/drm/i915/display/intel_vrr.c
> > +++ b/drivers/gpu/drm/i915/display/intel_vrr.c
> > @@ -56,6 +56,11 @@ bool intel_vrr_is_in_range(struct intel_connector
> *connector, int vrefresh)
> >  		vrefresh <= info->monitor_range.max_vfreq;  }
> >
> > +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state) {
> > +	return (crtc_state->vrr.flipline) ? true : false;
> 
> I think this can be compressed to:
> 
> """
> 	return !!(crtc_state->vrr.flipline);
> """
> 
> But otherwise:
> Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> -Jonathan Cavitt
> 

Thanks @Cavitt, Jonathan for the review,

Agreed, with suggested change. On next version will be returning just
'crtc_state->vrr.flipline' or 'return crtc_state->vrr.flipline != 0;' as suggested by ville
in latest review. 

Again Thanks

> > +}
> > +
> >  void
> >  intel_vrr_check_modeset(struct intel_atomic_state *state)  { @@
> > -281,7 +286,7 @@ void intel_vrr_set_transcoder_timings(const struct
> intel_crtc_state *crtc_state)
> >  		intel_de_rmw(display, CHICKEN_TRANS(cpu_transcoder),
> >  			     0, PIPE_VBLANK_WITH_DELAY);
> >
> > -	if (!crtc_state->vrr.flipline) {
> > +	if (!intel_vrr_possible(crtc_state)) {
> >  		intel_de_write(display,
> >  			       TRANS_VRR_CTL(display, cpu_transcoder), 0);
> >  		return;
> > diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h
> > b/drivers/gpu/drm/i915/display/intel_vrr.h
> > index 89937858200d..af921dda4619 100644
> > --- a/drivers/gpu/drm/i915/display/intel_vrr.h
> > +++ b/drivers/gpu/drm/i915/display/intel_vrr.h
> > @@ -15,6 +15,7 @@ struct intel_crtc_state;
> >
> >  bool intel_vrr_is_capable(struct intel_connector *connector);  bool
> > intel_vrr_is_in_range(struct intel_connector *connector, int
> > vrefresh);
> > +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state);
> >  void intel_vrr_check_modeset(struct intel_atomic_state *state);  void
> > intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
> >  			      struct drm_connector_state *conn_state);
> > --
> > 2.46.0
> >
> >
Mitul Golani Oct. 9, 2024, 9:22 a.m. UTC | #4
> -----Original Message-----
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Sent: Wednesday, October 9, 2024 12:55 PM
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>
> Cc: intel-gfx@lists.freedesktop.org; Nikula, Jani <jani.nikula@intel.com>;
> Syrjala, Ville <ville.syrjala@intel.com>; Nautiyal, Ankit K
> <ankit.k.nautiyal@intel.com>; Shankar, Uma <uma.shankar@intel.com>
> Subject: Re: [PATCH v13 1/3] drm/i915/vrr: Add helper to check if vrr possible
> 
> On Tue, Oct 01, 2024 at 07:17:01PM +0530, Mitul Golani wrote:
> > Add helper to check if vrr is possible based on flipline is computed.
> >
> > Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_vrr.c | 7 ++++++-
> > drivers/gpu/drm/i915/display/intel_vrr.h | 1 +
> >  2 files changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c
> > b/drivers/gpu/drm/i915/display/intel_vrr.c
> > index 9a51f5bac307..79db30e31324 100644
> > --- a/drivers/gpu/drm/i915/display/intel_vrr.c
> > +++ b/drivers/gpu/drm/i915/display/intel_vrr.c
> > @@ -56,6 +56,11 @@ bool intel_vrr_is_in_range(struct intel_connector
> *connector, int vrefresh)
> >  		vrefresh <= info->monitor_range.max_vfreq;  }
> >
> > +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state) {
> > +	return (crtc_state->vrr.flipline) ? true : false;
> 
> That can be just 'return crtc_state->vrr.flipline;', of 'return crtc_state-
> >vrr.flipline != 0;' if you prefer.
> 

Thanks Ville for the review,

I will update it to just return crtc_state->vrr.flipline in next revision.

> > +}
> > +
> >  void
> >  intel_vrr_check_modeset(struct intel_atomic_state *state)  { @@
> > -281,7 +286,7 @@ void intel_vrr_set_transcoder_timings(const struct
> intel_crtc_state *crtc_state)
> >  		intel_de_rmw(display, CHICKEN_TRANS(cpu_transcoder),
> >  			     0, PIPE_VBLANK_WITH_DELAY);
> >
> > -	if (!crtc_state->vrr.flipline) {
> > +	if (!intel_vrr_possible(crtc_state)) {
> 
> Hmm. Looks like we have a fairly big mess with the AS SDP and CMRR stuff
> when it comes to programming the hardware vs. readout. But that's not the
> fault of this patch obviously.
> 
> >  		intel_de_write(display,
> >  			       TRANS_VRR_CTL(display, cpu_transcoder), 0);
> >  		return;
> > diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h
> > b/drivers/gpu/drm/i915/display/intel_vrr.h
> > index 89937858200d..af921dda4619 100644
> > --- a/drivers/gpu/drm/i915/display/intel_vrr.h
> > +++ b/drivers/gpu/drm/i915/display/intel_vrr.h
> > @@ -15,6 +15,7 @@ struct intel_crtc_state;
> >
> >  bool intel_vrr_is_capable(struct intel_connector *connector);  bool
> > intel_vrr_is_in_range(struct intel_connector *connector, int
> > vrefresh);
> > +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state);
> >  void intel_vrr_check_modeset(struct intel_atomic_state *state);  void
> > intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
> >  			      struct drm_connector_state *conn_state);
> > --
> > 2.46.0
> 
> --
> Ville Syrjälä
> Intel
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 9a51f5bac307..79db30e31324 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -56,6 +56,11 @@  bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh)
 		vrefresh <= info->monitor_range.max_vfreq;
 }
 
+bool intel_vrr_possible(const struct intel_crtc_state *crtc_state)
+{
+	return (crtc_state->vrr.flipline) ? true : false;
+}
+
 void
 intel_vrr_check_modeset(struct intel_atomic_state *state)
 {
@@ -281,7 +286,7 @@  void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
 		intel_de_rmw(display, CHICKEN_TRANS(cpu_transcoder),
 			     0, PIPE_VBLANK_WITH_DELAY);
 
-	if (!crtc_state->vrr.flipline) {
+	if (!intel_vrr_possible(crtc_state)) {
 		intel_de_write(display,
 			       TRANS_VRR_CTL(display, cpu_transcoder), 0);
 		return;
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
index 89937858200d..af921dda4619 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -15,6 +15,7 @@  struct intel_crtc_state;
 
 bool intel_vrr_is_capable(struct intel_connector *connector);
 bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh);
+bool intel_vrr_possible(const struct intel_crtc_state *crtc_state);
 void intel_vrr_check_modeset(struct intel_atomic_state *state);
 void intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
 			      struct drm_connector_state *conn_state);