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Message-ID: <87bk3gm0pz.fsf@minerva.mail-host-address-is-not-set>
Date: Tue, 02 Jul 2024 14:34:32 +0200
From: Javier Martinez Canillas <javierm@...hat.com>
To: Thomas Huth <thuth@...hat.com>, dri-devel@...ts.freedesktop.org, Maarten
Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
<mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, Geert
Uytterhoeven <geert@...ux-m68k.org>
Cc: linux-kernel@...r.kernel.org, David Airlie <airlied@...il.com>, Daniel
Vetter <daniel@...ll.ch>, Thomas Huth <thuth@...hat.com>
Subject: Re: [PATCH] drm/fbdev-dma: Fix framebuffer mode for big endian devices
Thomas Huth <thuth@...hat.com> writes:
Hello Thomas,
> The drm_mode_legacy_fb_format() function only generates formats suitable
> for little endian devices. switch to drm_driver_legacy_fb_format() here
> instead to take the device endianness into consideration, too.
>
> Suggested-by: Thomas Zimmermann <tzimmermann@...e.de>
> Signed-off-by: Thomas Huth <thuth@...hat.com>
> ---
> Note: Patch has only been compile-tested since I lack an environment
> for testing it. But it's the same fix as I required for the
> drm_mode_legacy_fb_format() in drm_fbdev_generic.c / drm_fbdev_ttm.c
> so I think this should be fine.
>
> drivers/gpu/drm/drm_fbdev_dma.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_fbdev_dma.c b/drivers/gpu/drm/drm_fbdev_dma.c
> index 97ef6300d47e..fdef4a2f883f 100644
> --- a/drivers/gpu/drm/drm_fbdev_dma.c
> +++ b/drivers/gpu/drm/drm_fbdev_dma.c
> @@ -101,7 +101,8 @@ static int drm_fbdev_dma_helper_fb_probe(struct drm_fb_helper *fb_helper,
> sizes->surface_width, sizes->surface_height,
> sizes->surface_bpp);
>
> - format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth);
> + format = drm_driver_legacy_fb_format(dev, sizes->surface_bpp,
> + sizes->surface_depth);
> buffer = drm_client_framebuffer_create(client, sizes->surface_width,
> sizes->surface_height, format);
> if (IS_ERR(buffer))
Makes sense to me.
Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>
--
Best regards,
Javier Martinez Canillas
Core Platforms
Red Hat
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