[PATCH 3/8] drm/imx: Use __drm_atomic_helper_crtc_reset

[Daniel Vetter]

On Fri, Jun 12, 2020 at 06:00:51PM +0200, Daniel Vetter wrote:
> Now also comes with the added benefit of doing a drm_crtc_vblank_off(),
> which means vblank state isn't ill-defined and fail-y at driver load
> before the first modeset on each crtc.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> Cc: Philipp Zabel <p.zabel at pengutronix.de>
> Cc: Shawn Guo <shawnguo at kernel.org>
> Cc: Sascha Hauer <s.hauer at pengutronix.de>
> Cc: Pengutronix Kernel Team <kernel at pengutronix.de>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: NXP Linux Team <linux-imx at nxp.com>
> Cc: linux-arm-kernel at lists.infradead.org

Ping for some ack/review on this pls.

Thanks, Daniel

> ---
>  drivers/gpu/drm/imx/ipuv3-crtc.c | 21 ++++++++-------------
>  1 file changed, 8 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
> index 63c0284f8b3c..02c2f848f2d1 100644
> --- a/drivers/gpu/drm/imx/ipuv3-crtc.c
> +++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
> @@ -109,20 +109,15 @@ static void imx_drm_crtc_reset(struct drm_crtc *crtc)
>  {
>  	struct imx_crtc_state *state;
>  
> -	if (crtc->state) {
> -		if (crtc->state->mode_blob)
> -			drm_property_blob_put(crtc->state->mode_blob);
> -
> -		state = to_imx_crtc_state(crtc->state);
> -		memset(state, 0, sizeof(*state));
> -	} else {
> -		state = kzalloc(sizeof(*state), GFP_KERNEL);
> -		if (!state)
> -			return;
> -		crtc->state = &state->base;
> -	}
> +	if (crtc->state)
> +		__drm_atomic_helper_crtc_destroy_state(crtc->state);
>  
> -	state->base.crtc = crtc;
> +	kfree(to_imx_crtc_state(crtc->state));
> +	crtc->state = NULL;
> +
> +	state = kzalloc(sizeof(*state), GFP_KERNEL);
> +	if (state)
> +		__drm_atomic_helper_crtc_reset(crtc, &state->base);
>  }
>  
>  static struct drm_crtc_state *imx_drm_crtc_duplicate_state(struct drm_crtc *crtc)
> -- 
> 2.26.2
> 

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