From: Maxime Ripard <maxime@cerno.tech>
To: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
javierm@redhat.com, airlied@linux.ie, daniel@ffwll.ch,
deller@gmx.de, sam@ravnborg.org, msuchanek@suse.de,
mpe@ellerman.id.au, paulus@samba.org,
mark.cave-ayland@ilande.co.uk, linux-fbdev@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v2 10/10] drm/ofdrm: Support color management
Date: Thu, 22 Sep 2022 09:28:03 +0200 [thread overview]
Message-ID: <20220922072803.giqo6dhqktnyjncv@houat> (raw)
In-Reply-To: <e6326381-0f5e-1fe3-e72e-fdfa804e6574@suse.de>
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On Thu, Sep 22, 2022 at 08:42:23AM +0200, Thomas Zimmermann wrote:
> Hi
>
> Am 21.09.22 um 18:48 schrieb Geert Uytterhoeven:
> > Hi Thomas,
> >
> > On Wed, Sep 21, 2022 at 2:55 PM Thomas Zimmermann <tzimmermann@suse.de> wrote:
> > > Am 05.08.22 um 02:19 schrieb Benjamin Herrenschmidt:
> > > > On Wed, 2022-07-20 at 16:27 +0200, Thomas Zimmermann wrote:
> > > > > +#if !defined(CONFIG_PPC)
> > > > > +static inline void out_8(void __iomem *addr, int val)
> > > > > +{ }
> > > > > +static inline void out_le32(void __iomem *addr, int val)
> > > > > +{ }
> > > > > +static inline unsigned int in_le32(const void __iomem *addr)
> > > > > +{
> > > > > + return 0;
> > > > > +}
> > > > > +#endif
> > > >
> > > > These guys could just be replaced with readb/writel/readl respectively
> > > > (beware of the argument swap).
> > >
> > > I only added them for COMPILE_TEST. There appears to be no portable
> > > interface that implements out_le32() and in_le32()?
> >
> > iowrite32() and ioread32()?
>
> Do they always use little endian, as these *_le32 helpers do? I though they
> use host byte order.
They use either outl or writel under the hood, which are always little-endian
Maxime
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next prev parent reply other threads:[~2022-09-22 7:28 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-20 14:27 [PATCH v2 00/10] drm: Add driver for PowerPC OF displays Thomas Zimmermann
2022-07-20 14:27 ` [PATCH v2 01/10] drm/simpledrm: Remove mem field from device structure Thomas Zimmermann
2022-07-25 14:48 ` Javier Martinez Canillas
2022-07-20 14:27 ` [PATCH v2 02/10] drm/simpledrm: Inline device-init helpers Thomas Zimmermann
2022-07-25 15:01 ` Javier Martinez Canillas
2022-07-27 7:50 ` Thomas Zimmermann
2022-07-27 9:30 ` Javier Martinez Canillas
2022-07-20 14:27 ` [PATCH v2 03/10] drm/simpledrm: Remove pdev field from device structure Thomas Zimmermann
2022-07-25 15:02 ` Javier Martinez Canillas
2022-07-20 14:27 ` [PATCH v2 04/10] drm/simpledrm: Compute framebuffer stride if not set Thomas Zimmermann
2022-07-21 14:46 ` Geert Uytterhoeven
2022-07-25 15:13 ` Javier Martinez Canillas
2022-07-27 7:53 ` Thomas Zimmermann
2022-08-11 17:23 ` Daniel Vetter
2022-08-11 18:26 ` Thomas Zimmermann
2022-08-11 18:27 ` Thomas Zimmermann
2022-09-06 19:16 ` Daniel Vetter
2022-07-20 14:27 ` [PATCH v2 05/10] drm/simpledrm: Convert to atomic helpers Thomas Zimmermann
2022-07-25 15:46 ` Javier Martinez Canillas
2022-07-27 7:58 ` Thomas Zimmermann
2022-07-20 14:27 ` [PATCH v2 06/10] drm/simpledrm: Move some functionality into fwfb helper library Thomas Zimmermann
2022-07-25 16:23 ` Javier Martinez Canillas
2022-07-27 8:24 ` Thomas Zimmermann
2022-07-27 9:39 ` Javier Martinez Canillas
2022-07-20 14:27 ` [PATCH v2 07/10] drm/ofdrm: Add ofdrm for Open Firmware framebuffers Thomas Zimmermann
2022-07-26 13:17 ` Javier Martinez Canillas
2022-09-21 11:41 ` Thomas Zimmermann
2022-07-20 14:27 ` [PATCH v2 08/10] drm/ofdrm: Add CRTC state Thomas Zimmermann
2022-07-26 13:36 ` Javier Martinez Canillas
2022-09-21 11:45 ` Thomas Zimmermann
2022-07-20 14:27 ` [PATCH v2 09/10] drm/ofdrm: Add per-model device function Thomas Zimmermann
2022-07-26 13:38 ` Javier Martinez Canillas
2022-07-26 14:40 ` Michal Suchánek
2022-07-26 19:22 ` Javier Martinez Canillas
2022-07-27 8:33 ` Thomas Zimmermann
2022-08-05 0:22 ` Benjamin Herrenschmidt
2022-09-21 12:37 ` Thomas Zimmermann
2022-07-20 14:27 ` [PATCH v2 10/10] drm/ofdrm: Support color management Thomas Zimmermann
2022-07-26 13:49 ` Javier Martinez Canillas
2022-07-27 8:41 ` Thomas Zimmermann
2022-07-27 9:45 ` Javier Martinez Canillas
2022-08-05 0:29 ` Benjamin Herrenschmidt
2022-08-05 0:19 ` Benjamin Herrenschmidt
2022-09-21 12:55 ` Thomas Zimmermann
2022-09-21 16:48 ` Geert Uytterhoeven
2022-09-22 6:42 ` Thomas Zimmermann
2022-09-22 7:28 ` Maxime Ripard [this message]
2022-09-22 8:06 ` Thomas Zimmermann
2022-07-28 11:13 ` [PATCH v2 00/10] drm: Add driver for PowerPC OF displays Michael Ellerman
2022-07-28 11:31 ` Michal Suchánek
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