[PATCH 3/8] drm/irq: Add drm_crtc_vblank_count()

[Daniel Vetter]

On Tue, Dec 16, 2014 at 05:15:10PM +0100, Thierry Reding wrote:
> From: Thierry Reding <treding at nvidia.com>
> 
> This function is the KMS native variant of drm_vblank_count(). It takes
> a struct drm_crtc * instead of a struct drm_device * and an index of the
> CRTC.
> 
> Eventually the goal is to access vblank data through the CRTC only so
> that the per-CRTC data can be moved to struct drm_crtc.
> 
> Signed-off-by: Thierry Reding <treding at nvidia.com>

On the first 3 patches:

Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>


> ---
>  drivers/gpu/drm/drm_irq.c | 21 +++++++++++++++++++++
>  include/drm/drmP.h        |  1 +
>  2 files changed, 22 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
> index f7f1b579526e..75647e7f012b 100644
> --- a/drivers/gpu/drm/drm_irq.c
> +++ b/drivers/gpu/drm/drm_irq.c
> @@ -830,6 +830,8 @@ drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
>   * vblank events since the system was booted, including lost events due to
>   * modesetting activity.
>   *
> + * This is the legacy version of drm_crtc_vblank_count().
> + *
>   * Returns:
>   * The software vblank counter.
>   */
> @@ -844,6 +846,25 @@ u32 drm_vblank_count(struct drm_device *dev, int crtc)
>  EXPORT_SYMBOL(drm_vblank_count);
>  
>  /**
> + * drm_crtc_vblank_count - retrieve "cooked" vblank counter value
> + * @crtc: which counter to retrieve
> + *
> + * Fetches the "cooked" vblank count value that represents the number of
> + * vblank events since the system was booted, including lost events due to
> + * modesetting activity.
> + *
> + * This is the native KMS version of drm_vblank_count().
> + *
> + * Returns:
> + * The software vblank counter.
> + */
> +u32 drm_crtc_vblank_count(struct drm_crtc *crtc)
> +{
> +	return drm_vblank_count(crtc->dev, drm_crtc_index(crtc));
> +}
> +EXPORT_SYMBOL(drm_crtc_vblank_count);
> +
> +/**
>   * drm_vblank_count_and_time - retrieve "cooked" vblank counter value
>   * and the system timestamp corresponding to that vblank counter value.
>   *
> diff --git a/include/drm/drmP.h b/include/drm/drmP.h
> index f1f7f15ce0f3..e1b2e8b98af7 100644
> --- a/include/drm/drmP.h
> +++ b/include/drm/drmP.h
> @@ -901,6 +901,7 @@ extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
>  extern int drm_wait_vblank(struct drm_device *dev, void *data,
>  			   struct drm_file *filp);
>  extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
> +extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);
>  extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
>  				     struct timeval *vblanktime);
>  extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
> -- 
> 2.1.3
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch