linux-kernel - Re: [PATCH 2/3] drm/nouveau/kms/nv50-: Report max cursor size to userspace

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Date:   Tue, 23 Feb 2021 15:15:21 +0100
From:   Alex Riesen <alexander.riesen@...itec.com>
To:     Lyude Paul <lyude@...hat.com>
Cc:     nouveau@...ts.freedesktop.org, Martin Peres <martin.peres@...e.fr>,
        Jeremy Cline <jcline@...hat.com>,
        Simon Ser <contact@...rsion.fr>,
        Ben Skeggs <bskeggs@...hat.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Dave Airlie <airlied@...hat.com>,
        Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@...el.com>,
        Takashi Iwai <tiwai@...e.de>, James Jones <jajones@...dia.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] drm/nouveau/kms/nv50-: Report max cursor size to
 userspace

Lyude Paul, Tue, Jan 19, 2021 02:54:13 +0100:
> diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
> index c6367035970e..5f4f09a601d4 100644
> --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
> +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
> @@ -2663,6 +2663,14 @@ nv50_display_create(struct drm_device *dev)
>  	else
>  		nouveau_display(dev)->format_modifiers = disp50xx_modifiers;
>  
> +	if (disp->disp->object.oclass >= GK104_DISP) {
> +		dev->mode_config.cursor_width = 256;
> +		dev->mode_config.cursor_height = 256;
> +	} else {
> +		dev->mode_config.cursor_width = 64;
> +		dev->mode_config.cursor_height = 64;
> +	}
> +
>  	/* create crtc objects to represent the hw heads */
>  	if (disp->disp->object.oclass >= GV100_DISP)
>  		crtcs = nvif_rd32(&device->object, 0x610060) & 0xff;

This change broke X cursor in my setup, and reverting the commit restores it.

Dell Precision M4800, issue ~2014 with GK106GLM [Quadro K2100M] (rev a1).
libdrm 2.4.91-1 (Debian 10.8 stable).
There are no errors or warnings in Xorg logs nor in the kernel log.

Regards,
Alex