> -----Original Message-----
> From: Pekka Paalanen <ppaalanen@xxxxxxxxx>
> Sent: Wednesday, June 2, 2021 2:33 PM
> To: Shankar, Uma <uma.shankar@xxxxxxxxx>
> Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; Modem,
> Bhanuprakash <bhanuprakash.modem@xxxxxxxxx>
> Subject: Re: [PATCH 5/9] drm: Add Client Cap for advance gamma mode
>
> On Tue, 1 Jun 2021 16:11:31 +0530
> Uma Shankar <uma.shankar@xxxxxxxxx> wrote:
>
> > Introduced a client cap for advance cap mode capability. Userspace
>
> Typo: "cap mode" should be "gamma mode"?
Yeah, will fix this.
> > should set this to get to be able to use the new gamma_mode property.
> >
> > If this is not set, driver will work in legacy mode.
> >
> > Note: This is suggested by Ville and based on his idea, the new gamma
> > mode handling is designed.
> >
> > Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/drm_atomic_uapi.c | 3 +++
> > drivers/gpu/drm/drm_ioctl.c | 5 +++++
> > include/drm/drm_atomic.h | 1 +
> > include/drm/drm_crtc.h | 8 ++++++++
> > include/drm/drm_file.h | 8 ++++++++
> > include/uapi/drm/drm.h | 8 ++++++++
> > 6 files changed, 33 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/drm_atomic_uapi.c
> > b/drivers/gpu/drm/drm_atomic_uapi.c
> > index a5470a0ebbe6..7ee35bc14455 100644
> > --- a/drivers/gpu/drm/drm_atomic_uapi.c
> > +++ b/drivers/gpu/drm/drm_atomic_uapi.c
> > @@ -1036,6 +1036,8 @@ int drm_atomic_set_property(struct drm_atomic_state
> *state,
> > break;
> > }
> >
> > + crtc_state->advance_gamma_mode_active =
> > + state->advance_gamma_mode_active;
> > ret = drm_atomic_crtc_set_property(crtc,
> > crtc_state, prop, prop_value);
> > break;
> > @@ -1372,6 +1374,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
> > drm_modeset_acquire_init(&ctx,
> DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
> > state->acquire_ctx = &ctx;
> > state->allow_modeset = !!(arg->flags &
> > DRM_MODE_ATOMIC_ALLOW_MODESET);
> > + state->advance_gamma_mode_active =
> > +file_priv->advance_gamma_mode_active;
> >
> > retry:
> > copied_objs = 0;
> > diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
> > index 53d314103a37..d51f72213882 100644
> > --- a/drivers/gpu/drm/drm_ioctl.c
> > +++ b/drivers/gpu/drm/drm_ioctl.c
> > @@ -361,6 +361,11 @@ drm_setclientcap(struct drm_device *dev, void *data,
> struct drm_file *file_priv)
> > return -EINVAL;
> > file_priv->writeback_connectors = req->value;
> > break;
> > + case DRM_CLIENT_CAP_ADVANCE_GAMMA_MODES:
> > + if (req->value > 1)
> > + return -EINVAL;
> > + file_priv->advance_gamma_mode_active = req->value;
> > + break;
> > default:
> > return -EINVAL;
> > }
> > diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index
> > ac5a28eff2c8..5a398a249c80 100644
> > --- a/include/drm/drm_atomic.h
> > +++ b/include/drm/drm_atomic.h
> > @@ -379,6 +379,7 @@ struct drm_atomic_state {
> > * states.
> > */
> > bool duplicated : 1;
> > + bool advance_gamma_mode_active : 1;
>
> "advance" is a verb. Did you mean "advanced"?
Right, will rename it.
>
> > struct __drm_planes_state *planes;
> > struct __drm_crtcs_state *crtcs;
> > int num_connector;
> > diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index
> > 5a594f134a81..f4339fbad086 100644
> > --- a/include/drm/drm_crtc.h
> > +++ b/include/drm/drm_crtc.h
> > @@ -170,6 +170,11 @@ struct drm_crtc_state {
> > */
> > bool color_mgmt_changed : 1;
> >
> > + /**
> > + * This is to indicate advance gamma mode support
> > + */
> > + bool advance_gamma_mode_active : 1;
>
> Same here.
>
> > +
> > /**
> > * @no_vblank:
> > *
> > @@ -1036,6 +1041,9 @@ struct drm_crtc {
> > */
> > bool enabled;
> >
> > + /** To handle advance gamma mode support */
> > + bool advance_gamma_mode_active : 1;
>
> Same here.
>
> > +
> > /**
> > * @mode:
> > *
> > diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h index
> > b81b3bfb08c8..4af3e1a2a158 100644
> > --- a/include/drm/drm_file.h
> > +++ b/include/drm/drm_file.h
> > @@ -201,6 +201,14 @@ struct drm_file {
> > */
> > bool writeback_connectors;
> >
> > + /**
> > + * This is to enable advance gamma modes using
> > + * gamma_mode property
> > + *
> > + * True if client understands advance gamma
> > + */
> > + bool advance_gamma_mode_active : 1;
>
> Same here.
>
> > +
> > /**
> > * @was_master:
> > *
> > diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index
> > 67b94bc3c885..661efdf0c969 100644
> > --- a/include/uapi/drm/drm.h
> > +++ b/include/uapi/drm/drm.h
> > @@ -816,6 +816,14 @@ struct drm_get_cap {
> > */
> > #define DRM_CLIENT_CAP_WRITEBACK_CONNECTORS 5
> >
> > +/**
> > + * Add support for advance gamma mode UAPI
> > + * If set to 1, DRM will enable advance gamma mode
> > + * UAPI to process the gamma mode based on extended
> > + * range and segments.
> > + */
> > +#define DRM_CLIENT_CAP_ADVANCE_GAMMA_MODES 6
>
> Same here.
>
> > +
> > /* DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */ struct
> > drm_set_client_cap {
> > __u64 capability;
>
>
> Thanks,
> pq
