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From: Robert Schwebel <r.schwebel@pengutronix.de>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 4/5] fb: Add DCU framebuffer driver for Vybrid VF610 platform
Date: Mon, 05 Aug 2013 13:09:11 +0000	[thread overview]
Message-ID: <20130805130911.GF30920@pengutronix.de> (raw)
In-Reply-To: <81BA6E5E0BC2344391CABCEE22D1B6D83CA6F0@039-SN1MPN1-002.039d.mgd.msft.net>

On Mon, Aug 05, 2013 at 09:51:40AM +0000, Wang Huan-B18965 wrote:
> > On Fri, Jul 12, 2013 at 02:07:55PM +0800, Alison Wang wrote:
> > > The Display Controller Unit (DCU) module is a system master that
> > > fetches graphics stored in internal or external memory and displays
> > > them on a TFT LCD panel. A wide range of panel sizes is supported and
> > > the timing of the interface signals is highly configurable.
> > > Graphics are read directly from memory and then blended in real-time,
> > > which allows for dynamic content creation with minimal CPU
> > intervention.
> > 
> > Only a review of the code inline.
> > 
> > Maybe the real question is whether we want to introduce another
> > framebuffer driver at all instead of making it a DRM driver.
> [Alison Wang] I think DCU module is more suitable to be designed as a framebuffer driver than a DRM driver. Just like DIU framebuffer driver for PowerPC.

We looked at the Vybrid datasheet and it's DCU section last week, and
with its 64 planes, the controller really wants to get a DRM driver.

rsc
-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
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WARNING: multiple messages have this Message-ID (diff)
From: r.schwebel@pengutronix.de (Robert Schwebel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/5] fb: Add DCU framebuffer driver for Vybrid VF610 platform
Date: Mon, 5 Aug 2013 15:09:11 +0200	[thread overview]
Message-ID: <20130805130911.GF30920@pengutronix.de> (raw)
In-Reply-To: <81BA6E5E0BC2344391CABCEE22D1B6D83CA6F0@039-SN1MPN1-002.039d.mgd.msft.net>

On Mon, Aug 05, 2013 at 09:51:40AM +0000, Wang Huan-B18965 wrote:
> > On Fri, Jul 12, 2013 at 02:07:55PM +0800, Alison Wang wrote:
> > > The Display Controller Unit (DCU) module is a system master that
> > > fetches graphics stored in internal or external memory and displays
> > > them on a TFT LCD panel. A wide range of panel sizes is supported and
> > > the timing of the interface signals is highly configurable.
> > > Graphics are read directly from memory and then blended in real-time,
> > > which allows for dynamic content creation with minimal CPU
> > intervention.
> > 
> > Only a review of the code inline.
> > 
> > Maybe the real question is whether we want to introduce another
> > framebuffer driver at all instead of making it a DRM driver.
> [Alison Wang] I think DCU module is more suitable to be designed as a framebuffer driver than a DRM driver. Just like DIU framebuffer driver for PowerPC.

We looked at the Vybrid datasheet and it's DCU section last week, and
with its 64 planes, the controller really wants to get a DRM driver.

rsc
-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

  parent reply	other threads:[~2013-08-05 13:09 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-12  6:07 [PATCH v2 0/5] ARM: vf610: Add DCU framebuffer driver for Vybrid VF610 platform Alison Wang
2013-07-12  6:07 ` Alison Wang
2013-07-12  6:07 ` [PATCH 1/5] ARM: dts: vf610: Add DCU and TCON nodes Alison Wang
2013-07-12  6:07   ` Alison Wang
2013-07-12  6:07 ` [PATCH 2/5] ARM: dts: vf610-twr: Enable DCU and TCON devices Alison Wang
2013-07-12  6:07   ` Alison Wang
2013-07-12  6:07 ` [PATCH 3/5] ARM: clk: vf610: Add DCU and TCON clock support Alison Wang
2013-07-12  6:07   ` Alison Wang
2013-07-12  6:07 ` [PATCH 4/5] fb: Add DCU framebuffer driver for Vybrid VF610 platform Alison Wang
2013-07-12  6:07   ` Alison Wang
2013-07-29 11:14   ` Sascha Hauer
2013-07-29 11:14     ` Sascha Hauer
2013-08-05  9:51     ` Wang Huan-B18965
2013-08-05  9:51       ` Wang Huan-B18965
2013-08-05 10:06       ` Sascha Hauer
2013-08-05 10:06         ` Sascha Hauer
2013-08-06  3:42         ` Wang Huan-B18965
2013-08-06  3:42           ` Wang Huan-B18965
2013-08-05 13:09       ` Robert Schwebel [this message]
2013-08-05 13:09         ` Robert Schwebel
2013-08-05 14:18         ` Lucas Stach
2013-08-05 14:18           ` Lucas Stach
2013-08-06  7:20           ` Wang Huan-B18965
2013-08-06  7:20             ` Wang Huan-B18965
2014-01-06 18:50     ` Bill Pringlemeir
2014-01-07  9:18       ` Lucas Stach
2014-01-07 20:52         ` Bill Pringlemeir
2014-01-07 21:00           ` Bill Pringlemeir
2013-08-06  8:47   ` Lucas Stach
2013-08-06  8:47     ` Lucas Stach
2013-08-07  8:07     ` Wang Huan-B18965
2013-08-07  8:07       ` Wang Huan-B18965
2013-07-12  6:07 ` [PATCH 5/5] Documentation: DT: Add DCU framebuffer driver Alison Wang
2013-07-12  6:07   ` Alison Wang
2013-07-19  3:49 ` [PATCH v2 0/5] ARM: vf610: Add DCU framebuffer driver for Vybrid VF610 platform Wang Huan-B18965
2013-07-19  3:49   ` Wang Huan-B18965
2013-07-29  6:13   ` Wang Huan-B18965
2013-07-29  6:13     ` Wang Huan-B18965

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