On Thu, Feb 21, 2013 at 01:49:53AM +0100, Daniel Vetter wrote:
> Currently only containing the requested and the adjusted mode. And
> only crtc callbacks are converted somewhat to it, encoders will be
> done on a as-needed basis (simply too much churn in one patch
> otherwise).
> 
> Future patches will add tons more useful stuff to this struct,
> starting with the very simple.

Just a few bikesheds below. Otherwise the direction where this is going
looks very nice.

> v2: Store the pipe_config in the intel_crtc, so that the ->mode-set,
> ->enable and also ->disable have easy access to it.
> 
> v3: Store the pipe config in the right crtc ...
> 
> v4: Rebased.
> 
> v5: Fixup an BUG when trying to kfree an ERR_PTR.
> 
> Signed-off-by: Daniel Vetter <[email protected]>
> ---
>  drivers/gpu/drm/i915/i915_drv.h      |  4 +-
>  drivers/gpu/drm/i915/intel_display.c | 84 
> +++++++++++++++++++++---------------
>  drivers/gpu/drm/i915/intel_drv.h     |  7 +++
>  3 files changed, 59 insertions(+), 36 deletions(-)
> 
<snip>
> @@ -7382,19 +7386,24 @@ static void intel_modeset_commit_output_state(struct 
> drm_device *dev)
>       }
>  }
>  
> -static struct drm_display_mode *
> -intel_modeset_adjusted_mode(struct drm_crtc *crtc,
> -                         struct drm_display_mode *mode)
> +static struct intel_crtc_config *
> +intel_modeset_pipe_config(struct drm_crtc *crtc,
> +                       struct drm_display_mode *mode)
>  {
>       struct drm_device *dev = crtc->dev;
> -     struct drm_display_mode *adjusted_mode;
>       struct drm_encoder_helper_funcs *encoder_funcs;
>       struct intel_encoder *encoder;
> +     struct intel_crtc_config *pipe_config;
>  
> -     adjusted_mode = drm_mode_duplicate(dev, mode);
> -     if (!adjusted_mode)
> +     pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
> +     if (!pipe_config)
>               return ERR_PTR(-ENOMEM);
>  
> +     pipe_config->adjusted_mode = *mode;
> +     pipe_config->adjusted_mode.base.id = 0;
> +     pipe_config->requested_mode = *mode;
> +     pipe_config->requested_mode.base.id = 0;

drm_mode_copy() perhaps?

> +
>       /* Pass our mode to the connectors and the CRTC to give them a chance to
>        * adjust it according to limitations or connector properties, and also
>        * a chance to reject the mode entirely.
> @@ -7405,22 +7414,23 @@ intel_modeset_adjusted_mode(struct drm_crtc *crtc,
>               if (&encoder->new_crtc->base != crtc)
>                       continue;
>               encoder_funcs = encoder->base.helper_private;
> -             if (!(encoder_funcs->mode_fixup(&encoder->base, mode,
> -                                             adjusted_mode))) {
> +             if (!(encoder_funcs->mode_fixup(&encoder->base,
> +                                             &pipe_config->requested_mode,
> +                                             &pipe_config->adjusted_mode))) {
>                       DRM_DEBUG_KMS("Encoder fixup failed\n");
>                       goto fail;
>               }
>       }
>  
> -     if (!(intel_crtc_mode_fixup(crtc, mode, adjusted_mode))) {
> +     if (!(intel_crtc_compute_config(crtc, pipe_config))) {
>               DRM_DEBUG_KMS("CRTC fixup failed\n");
>               goto fail;
>       }
>       DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
>  
> -     return adjusted_mode;
> +     return pipe_config;
>  fail:
> -     drm_mode_destroy(dev, adjusted_mode);
> +     kfree(pipe_config);
>       return ERR_PTR(-EINVAL);
>  }
>  
> @@ -7686,7 +7696,8 @@ int intel_set_mode(struct drm_crtc *crtc,
>  {
>       struct drm_device *dev = crtc->dev;
>       drm_i915_private_t *dev_priv = dev->dev_private;
> -     struct drm_display_mode *adjusted_mode, *saved_mode, *saved_hwmode;
> +     struct drm_display_mode *saved_mode, *saved_hwmode;
> +     struct intel_crtc_config *pipe_config;
>       struct intel_crtc *intel_crtc;
>       unsigned disable_pipes, prepare_pipes, modeset_pipes;
>       int ret = 0;
> @@ -7713,11 +7724,13 @@ int intel_set_mode(struct drm_crtc *crtc,
>        * Hence simply check whether any bit is set in modeset_pipes in all the
>        * pieces of code that are not yet converted to deal with mutliple crtcs
>        * changing their mode at the same time. */
> -     adjusted_mode = NULL;
> +     pipe_config = NULL;

The NULL assignment could be moved to where pipe_config is declared.

>       if (modeset_pipes) {
> -             adjusted_mode = intel_modeset_adjusted_mode(crtc, mode);
> -             if (IS_ERR(adjusted_mode)) {
> -                     ret = PTR_ERR(adjusted_mode);
> +             pipe_config = intel_modeset_pipe_config(crtc, mode);
> +             if (IS_ERR(pipe_config)) {
> +                     ret = PTR_ERR(pipe_config);
> +                     pipe_config = NULL;
> +
>                       goto out;
>               }
>       }

-- 
Ville Syrjälä
Intel OTC
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