[Intel-gfx] [PATCH v2 2/3] drm/i915 : Changing intel_connector iterators

[Murthy, Arun R]

> From: Suraj Kandpal <suraj.kandpal at intel.com>
> 
> Changing intel_connector iterators as with writeback introduction not all
> drm_connector will be embedded within intel_connector.
> 
> Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.h  |  7 ++---
>  .../drm/i915/display/intel_display_types.h    | 26 ++++++++++++++++++-
>  .../drm/i915/display/intel_modeset_setup.c    | 16 +++++++++---
>  3 files changed, 40 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h
> b/drivers/gpu/drm/i915/display/intel_display.h
> index 4e9f22954a41..3b9987b5f304 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -52,6 +52,7 @@ struct intel_crtc_state;  struct intel_digital_port;  struct
> intel_dp;  struct intel_encoder;
> +struct intel_connector;
>  struct intel_initial_plane_config;
>  struct intel_load_detect_pipe;
>  struct intel_plane;
> @@ -469,16 +470,12 @@ enum hpd_pin {
>  		for_each_if(intel_encoder_can_psr(intel_encoder))
> 
>  #define for_each_intel_connector_iter(intel_connector, iter) \
> -	while ((intel_connector =
> to_intel_connector(drm_connector_list_iter_next(iter))))
> +	while ((intel_connector = intel_connector_list_iter_next(iter)))
> 
>  #define for_each_encoder_on_crtc(dev, __crtc, intel_encoder) \
>  	list_for_each_entry((intel_encoder), &(dev)-
> >mode_config.encoder_list, base.head) \
>  		for_each_if((intel_encoder)->base.crtc == (__crtc))
> 
> -#define for_each_connector_on_encoder(dev, __encoder, intel_connector)
> \
> -	list_for_each_entry((intel_connector), &(dev)-
> >mode_config.connector_list, base.head) \
> -		for_each_if((intel_connector)->base.encoder == (__encoder))
> -
>  #define for_each_old_intel_plane_in_state(__state, plane, old_plane_state,
> __i) \
>  	for ((__i) = 0; \
>  	     (__i) < (__state)->base.dev->mode_config.num_total_plane && \
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
> b/drivers/gpu/drm/i915/display/intel_display_types.h
> index 0e94bd430bcb..7a82b7acbaf2 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -1497,12 +1497,14 @@ struct cxsr_latency {  #define
> to_intel_atomic_state(x) container_of(x, struct intel_atomic_state, base)
> #define to_intel_crtc(x) container_of(x, struct intel_crtc, base)  #define
> to_intel_crtc_state(x) container_of(x, struct intel_crtc_state, uapi) -#define
> to_intel_connector(x) container_of(x, struct intel_connector, base)
> +#define to_intel_wb_connector(x) container_of(x, struct
> +intel_wb_connector, base)
>  #define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
> #define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer,
> base)  #define to_intel_plane(x) container_of(x, struct intel_plane, base)
> #define to_intel_plane_state(x) container_of(x, struct intel_plane_state,
> uapi)  #define intel_fb_obj(x) ((x) ? to_intel_bo((x)->obj[0]) : NULL)
> +#define to_intel_connector(x) (((x->connector_type ==
> DRM_MODE_CONNECTOR_WRITEBACK)) ?	\
> +				NULL : container_of(x, struct intel_connector,
> base))
> 
>  struct intel_hdmi {
>  	i915_reg_t hdmi_reg;
> @@ -2068,4 +2070,26 @@ to_intel_frontbuffer(struct drm_framebuffer *fb)
>  	return fb ? to_intel_framebuffer(fb)->frontbuffer : NULL;  }
> 
> +static inline struct intel_connector *
> +intel_connector_list_iter_next(struct drm_connector_list_iter *iter) {
> +	struct drm_connector *connector;
> +	bool flag = true;
> +	/*
> +	 * Skipping connector that are Writeback connector as they will
> +	 * not be embedded in intel connector
> +	 */
Better to be more clear, "An intel_connector entity is not created for writeback, hence decoupling" 
With the above changes
Reviewed-by: Arun R Murthy <arun.r.murthy>

> +	while (flag) {
> +		connector = drm_connector_list_iter_next(iter);
> +		if (connector && !to_intel_connector(connector))
> +			continue;
> +
> +		flag = false;
> +
> +		if (connector)
> +			return to_intel_connector(connector);
> +
> +	}
> +	return NULL;
> +}
>  #endif /*  __INTEL_DISPLAY_TYPES_H__ */ diff --git
> a/drivers/gpu/drm/i915/display/intel_modeset_setup.c
> b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
> index f0e04d3904c6..985dfa5f7aa1 100644
> --- a/drivers/gpu/drm/i915/display/intel_modeset_setup.c
> +++ b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
> @@ -204,12 +204,22 @@ static bool intel_crtc_has_encoders(struct
> intel_crtc *crtc)
> 
>  static struct intel_connector *intel_encoder_find_connector(struct
> intel_encoder *encoder)  {
> -	struct drm_device *dev = encoder->base.dev;
> +	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
>  	struct intel_connector *connector;
> +	struct drm_connector_list_iter conn_iter;
> +	bool found_connector = false;
> 
> -	for_each_connector_on_encoder(dev, &encoder->base, connector)
> -		return connector;
> +	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
> +	for_each_intel_connector_iter(connector, &conn_iter) {
> +		if (&encoder->base == connector->base.encoder) {
> +			found_connector = true;
> +			break;
> +		}
> +	}
> +	drm_connector_list_iter_end(&conn_iter);
> 
> +	if (found_connector)
> +		return connector;
>  	return NULL;
>  }
> 
> --
> 2.25.1

Thanks and Regards,
Arun R Murthy
--------------------