linux-kernel - Re: [PATCH v2 03/15] drm/bochs: atomic: add atomic_flush+atomic_enable callbacks.

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Date:   Wed, 9 Jan 2019 11:06:17 +0100
From:   Daniel Vetter <daniel@...ll.ch>
To:     Gerd Hoffmann <kraxel@...hat.com>
Cc:     dri-devel@...ts.freedesktop.org, David Airlie <airlied@...hat.com>,
        andr2000@...il.com, David Airlie <airlied@...ux.ie>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:DRM DRIVER FOR BOCHS VIRTUAL GPU" 
        <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH v2 03/15] drm/bochs: atomic: add
 atomic_flush+atomic_enable callbacks.

On Tue, Jan 08, 2019 at 12:25:07PM +0100, Gerd Hoffmann wrote:
> Conversion to atomic modesetting, step one.
> Add atomic crtc helper callbacks.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
> ---
>  drivers/gpu/drm/bochs/bochs_kms.c | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c
> index f7e6d1a9b3..2cbd406b1f 100644
> --- a/drivers/gpu/drm/bochs/bochs_kms.c
> +++ b/drivers/gpu/drm/bochs/bochs_kms.c
> @@ -115,6 +115,29 @@ static int bochs_crtc_page_flip(struct drm_crtc *crtc,
>  	return 0;
>  }
>  
> +static void bochs_crtc_atomic_enable(struct drm_crtc *crtc,
> +				     struct drm_crtc_state *old_crtc_state)
> +{
> +}

A patch to make this optional in the helpers would be neat.
-Daniel

> +
> +static void bochs_crtc_atomic_flush(struct drm_crtc *crtc,
> +				    struct drm_crtc_state *old_crtc_state)
> +{
> +	struct drm_device *dev = crtc->dev;
> +	struct drm_pending_vblank_event *event;
> +
> +	if (crtc->state && crtc->state->event) {
> +		unsigned long irqflags;
> +
> +		spin_lock_irqsave(&dev->event_lock, irqflags);
> +		event = crtc->state->event;
> +		crtc->state->event = NULL;
> +		drm_crtc_send_vblank_event(crtc, event);
> +		spin_unlock_irqrestore(&dev->event_lock, irqflags);
> +	}
> +}
> +
> +
>  /* These provide the minimum set of functions required to handle a CRTC */
>  static const struct drm_crtc_funcs bochs_crtc_funcs = {
>  	.set_config = drm_crtc_helper_set_config,
> @@ -128,6 +151,8 @@ static const struct drm_crtc_helper_funcs bochs_helper_funcs = {
>  	.mode_set_base = bochs_crtc_mode_set_base,
>  	.prepare = bochs_crtc_prepare,
>  	.commit = bochs_crtc_commit,
> +	.atomic_enable = bochs_crtc_atomic_enable,
> +	.atomic_flush = bochs_crtc_atomic_flush,
>  };
>  
>  static const uint32_t bochs_formats[] = {
> -- 
> 2.9.3
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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